Reading guide
I. Introduction: two, unpacking and appearance of articles three or disassemble chapter four mobile phone APP Control Edition Fifth, use the test article VI, science and technology to explain the black chapter VII, traditional dehumidifiers composition and decomposition of Eight, the advantages and disadvantages chapter IX Conclusion________________________________________
I. Introduction:
1. Brief introduction of dehumidifier
Dehumidifiers, also known as dehumidifiers, dryers, and dehumidifiers, can be classified into two categories, household dehumidifiers and industrial dehumidifiers, depending on where they are used. The principle of dehumidification can be divided into: 1. Cooling dehumidifiers. 2, runner dehumidifier. Solution dehumidifier. 3, solution in addition (suck) wet machine. 4, pipeline dehumidifier. The evaluation of the Oujing OJ-231ED is a household cooling dehumidifier, belonging to the refrigeration and air conditioning industry.
2 , the dehumidifier works
The cooling dehumidifier is composed of a compressor, a heat exchanger, a fan, a water storage device, a casing, and a controller. The working principle is as follows: a fan draws moist air into the machine, passes through a heat exchanger, and then the water in the air The molecules condense into water droplets and the treated dry air exits the machine. This cycle keeps the room humidity at a suitable relative humidity.
what? The above principle is too professional, I don't understand, it doesn't matter, simply make an analogy. Take a bottle of Coke out of the fridge and put it on the table. Turn on the electric fan and blow it against the coke. After a while, is it Coke? The top of the outer package covered with small drops of water? This is the simplest dehumidification.
In fact, domestic air conditioners also have a dehumidification function. Under the open cooling mode, the moisture of the indoor air is gradually condensed by the evaporator and discharged through the drain pipe. Therefore, why do we blow the air conditioning at one night and the mouth is relatively dry in the morning? This is the truth. Buy a humidifier and keep the room humidity on it. However, the air conditioner is fixed in the room and cannot be moved, and the air-conditioning operation consumes a large amount of power, so the dehumidifier was born.
3, brand awareness
The European well dehumidifier is a product of Zhejiang Oulun Electric Co., Ltd. The company was established in 2009 with a registered capital of 8 million US dollars. It is a domestic company specializing in R&D, design, manufacture, sales, and service of air dehumidification, humidification, purification equipment, and energy-saving products. As an integrated enterprise.
The dehumidifier model to be evaluated this time is OJ-231ED. For detailed appearance, dimensions and parameters, please refer to the following figure.
Second, unpacking and appearance
Receiving the courier, it can not wait to unpack, and use double carton packaging, inside the layer is a color carton, the outside layer is a kraft paper monochrome printing, should be taken into account when the courier transport to protect the inner box.
The cartons are printed in color and are rich in print content. They are printed with dehumidifier appearance, parameters, telephones, functions, and some corporate information.
The top of the box indicates that the tilt should not be greater than 45 degrees. Since there is a compressor in the dehumidifier and there is lubricating oil in the compressor, if the angle of inclination is too large, the lubricating oil in the compressor will run into the system piping and affect the use. This is why when we buy a refrigerator, the courier will remind them to put it to rest for 4 hours before use, so that the oil in the pipeline runs back to the compressor during transportation.
Open the box and put some written information on the top layer, and two activated carbon filters.
Written materials include warranty cards, manuals, JD Micro, and an advertisement.
Two pieces of black activated carbon filter can deodorize and remove odor in a certain amount of air, purify the environment, and have a very good purification effect.
In particular, why is the current PE packaging tape to be punched, from the perspective of our design, it is to prevent children from suffocating the bag over the head, so we must open the hole, because there have been children abroad before Suffocation case.
Remove the upper packaging styrofoam, dust cover machine with a transparent dust bag.
Take the dehumidifier out of the box.
Overall 360-degree rotation
The appearance of the dehumidifier adopts a quadrangular design. Four corners adopt a large rounded corner, the surface is smooth, the overall design is quite satisfactory, and no surface design is adopted.
There is a screw lock on the front of the dehumidifier, two holes in the middle are similar to the cooling holes, what is the specific use, and then verify when the rear disassemble, the bottom is connected to the water tank, there are round holes in the middle, easy to store wires And the water pipe is connected, and the JD micro joint QR code is above the water tank.
After the dehumidifier is relatively simple, using two-stage design, there is a T-shaped gap in the middle, where the humidity LED display.
When the humidity is less than 60%, the indicator is blue. When the humidity is in the range of 60%-80%, the indicator is green. When the humidity is greater than 80%, the indicator is red.
On the left side of the dehumidifier, there is a handle at the top, a heat exchanger suction port in the middle, and a decalifier specification sticker below, detailing some of the main parameters of the dehumidifier.
The right and left side of the dehumidifier are basically the same, but there is no specification sticker.
Right above is a black panel with an outlet on the left side fence and a control button panel on the right
The touch panel control is used at the control panel. There is no physical button feedback. All operations are done on the control panel. It is very bright and can be seen in the mirror.
The four feet of the base are connected by four universal wheels, which can move 360 ​​degrees without obstacles, so as to facilitate the dehumidification of each room. The middle four screws are the compressor fixing bolts.
The filter panel adopts a buckle design, which can be directly buckled in the middle of the panel by hand and pulled outwards, so that the filter panel can be easily removed.
The filter panel adopts a honeycomb hexagonal design with an irregular distribution at the bottom and a white filter cloth on the back, which is directly integrated with the plastic.
Remove a frame from the filter and place the black activated carbon filter in the accessory bag.
After the filter is removed, an electronic component is stuck on the heat exchanger on the right side. This is a temperature and temperature sensor that automatically senses the temperature and temperature at the return air inlet to automatically adjust the settings.
The receiving tank is concealed at the bottom of the dehumidifier. Both hands are placed in the grooves on both sides of the bottom and pulled outwards to pull out the tank.
A blue PVC drain pipe and power plug are placed in the water tank. The drain pipe can be directly connected to the outlet hole of the dehumidifier and discharged into the sewer. The power plug adopts the national standard three-pin jack.
There is a floating ball control valve on the right side of the water tank. In order to prevent the water tank from being deformed after injection molding, the middle is reinforced with ribs, and the bottom of the ribs is opened in order to ensure the level of the water level is the same.
After the water tank is removed, an internal electrical wiring diagram of the dehumidifier is provided.
The dehumidifier’s overall appearance and workmanship are acceptable and the surface is bright, but there are still some unsatisfactory places, such as the appearance of rough edges. In our profession, this raw edge is a mold bonding line, which may be a mold problem, or it may be The injection molding pressure is too high, the formation of flash, adjust the molding pressure or mold re-assembly, should be able to improve.
In addition, when the water tank is assembled on the dehumidifier, the transition between the left side and the dehumidifier is not smooth and there is still a 1-2mm difference. This is unqualified in our factory and needs to be improved. I do not know whether it is my dehumidifier. This is true for all dehumidifiers.
Third, disassemble articles
In order to further understand the structure and performance of the dehumidifier, disassemble the machine, and the tool to be prepared is a Phillips screwdriver.
First, start from the front, remove a screw that can be seen by the naked eye, and then take out the water tank, you can see the two screws, remove, pay attention to, the screws on the top are the countersunk screws, the two screws on the bottom For the umbrella head screw.
Since the front panel and the left and right side panels are buckled, the front panel can be removed by pushing the front panel upwards.
After removing the front panel, you can see a speaker. The black plastic part in the middle is the air duct, the air duct is the motor and the wind wheel, and the left and right heat exchangers.
At this time, it can be explained that the front panel is similar to the vent hole. The original speaker was the place where the sound came from. Although there was only one speaker, the Chinese people had a symmetrical aesthetic, so the sound hole had to be symmetrical.
At this time, you can start to remove the left and right side panels, remove the filter panel first, and remove the four screws as shown in the figure below. Since the left and right side panels are symmetrical, they are the same.
Since the left and right side panels and the rear panel also adopt a buckle design, the left and right side panels need to be pushed upward to remove the left and right side panels.
At this time, there are three screws remaining on the rear panel and the panel, inside the head-up panel, which need to be removed to remove the panel.
Since the screw is inside, the screwdriver is too short to rotate, so it is necessary to move the long rod screwdriver.
After the three screws are removed, the panel can be picked up. A control circuit board is seen below the panel touch button. Since the circuit board has a row of wires connected to the bottom, there is no way to remove the panel temporarily unless the circuit board is removed. Remove it, temporarily put the control panel on the side.
At this time, the last rear panel is not removed, and the left and right four screws shown in the figure below are removed and the rear panel can be removed.
Note that the rear panel cannot be removed directly. There is an LED indicator lamp on the top panel. Remove the LED light and remove the LED light to remove the rear panel.
After the housing is completely removed, we can see the air duct from above. There are two air ducts. There are two black wind turbines. The two wind turbines are driven by a single motor and the motor is double axis.
There is a UV germicidal lamp above the air duct. There is no way to test the specific bactericidal effect.
Inside the air duct there are two things that resemble a brush. This is an anion sounder, which is used to release negative ions when purifying. The specific purification effect can't be tested. There are no professional instruments.
The bottom of the black is the compressor, the heart of the dehumidifier, the European well dehumidifier used is the "Wansheng Compressor" produced by the Hangzhou Qianjiang Refrigeration Group. This compressor is made in China and has not been used before. Evaluation, we are Taiwan-funded enterprises, commonly used compressors are Panasonic, Toshiba, Hitachi, Mitsubishi, Ruizhi, Dongyuan and so on. The refrigerant used is R134A environmental refrigerant.
The left and right sides are a system of condensers and evaporators, inductors, capillaries, filters, etc.
The single row on the right is the evaporator, and the two rows of condensers are the same on the left, because the capacity of the condenser is larger than that of the evaporator.
It should be noted that because the dehumidifier uses a dual system, the left and right sides are a complete refrigeration system, with two evaporators, a condenser, a capillary tube, and a dry filter, sharing one compressor and the refrigerant in the system. The flow down graph has been marked by arrows.
The flow is roughly explained. After the refrigerant is compressed by the compressor, it divides into two channels and enters the condensers on the left and right respectively. After the condenser comes out, it enters into two dry filters and capillaries respectively, and finally enters two evaporators respectively. The refrigerant from the two evaporators is then collected and returned to the compressor. Referring to the figure below, the blue arrow shows the refrigerant flow direction.
Here to explain why the heat exchanger on both sides, one side is yellow, one side is purple, as shown below, the right side of the copper tube is gold, is the color of the copper tube itself, the left side of the copper tube is It has been welded at high temperatures and is reddish purple due to the addition of flux.
The white box next to the compressor should be the total circuit board, because all the electrical wiring comes out from here. Due to limited time, I am not professional about the circuit, so I did not open the evaluation again.
Fourth, mobile APP control articles
Now that we have entered the information age, all electrical appliances are connected to the Internet, all appliances plus a WIFI or Bluetooth module, you can interact with the mobile phone, you can call it a smart home appliance, Europe Well is no exception, join the traditional dehumidifier WIFI module.
Eurowell cooperated with JD.com and Alibaba respectively. The system that the dehumidifier sold in JD.com joins is JD Micro. The system that the dehumidifier that is sold by Tmall is the Alibaba intelligent system. The evaluation of JD Microsystems is here.
First, download the Jingdong Micro-Link APP by scanning the two-dimensional codes of the outer box, body, and manual. Open APP and click "My" in the lower right corner.
At this time, enter your own JD.com account number and password. After successful login, return to the home page.
Click on the plus sign in the top right corner of the home page, add the device, slide down, select the dehumidifier, and choose the brand Equus.
In this step, you must start the dehumidifier, switch on the power of the dehumidifier, press the switch button on the control panel, start the dehumidifier, temporarily do not control him, find the "timing" button on the control panel above, press and hold for 5 seconds (Here, note that when the long press is very hard, it is too light for no response, and the key feedback experience is poor), the dehumidification machine makes a bang, and at this time, the WIFI indicator of the display panel will continue to flash.
The machine is ready to complete. At this time, switch to the mobile phone, select your home WIFI, and then enter the password to connect the device to the phone.
If there is no problem with the settings, congratulations, the configuration is successful, you can give him a name, you can call him Xiaoou, Xiaojing, Xiaoqiang, as long as you are happy.
After the connection is successful, the first thing to do is to upgrade the firmware. Click the setting button in the upper right corner to upgrade the firmware. After the upgrade is successful, you will be prompted.
After the upgrade is successful, the dehumidifier setup page is displayed. The top is to display the current temperature and humidity, the middle is the manual setting of humidity and wind speed, the bottom is the child lock, negative ion, mode, timing and other settings, the mode is sunny, rainy, dry The clothing mode, the timing off setting is in hours, and the bottom is the on/off button.
The overall setup is relatively simple, there is no complicated function, and the elderly can easily navigate.
Fifth, use test articles1 , dehumidification test
The general southern rainy season is from June to July, but recently there is no obvious wet weather in Xiamen. It is a hot summer. In order to better test the effect of the dehumidifier, we can only use humidification test to simulate the weather in the rainy season. .
Our test site is in the bathroom. Because the bathroom has the largest amount of humidity, and the area is relatively small, it is easy to test. At this time, we want the cute little pig to be on the debut, and the humidifier to the maximum, and then humidify for about 20 minutes. , to increase the humidity inside the bathroom.
Take out the temperature and humidity agent, test the current humidity, I was at the same time to take two temperature and humidity agent test, the left mechanical type should be broken, the humidity out of the test was only about 64%, the digital display on the right out of the Humidity is 87%, whichever comes first.
At this time, the strongest drying mode of the dehumidifier was turned on, and the dehumidifier's display showed that the current humidity was about 93%. The LED light was red.
About two hours or so after starting the machine, stop dehumidifying. At this time, the current humidity of the dehumidifier is about 58%. At this time, the LED light is green.
Take out the temperature and humidity agent, test the current humidity, the left mechanical test out the humidity is 43%, the right digital display out of the humidity is 57%, and the dehumidifier tested out of about 58%.
Take out the water tank, there is already about 1/5 of the installed water, a tank capacity is 3L, probably received 0.6 liters of water, the dehumidification effect is still quite obvious.
2, noise test
According to national standard GBT of the dehumidifier, the dehumidifier noise value must meet the following table. The nominal dehumidification capacity of this section of the dehumidifier is 0.416 kg/h, so the noise value of the indoor unit should be less than 48 dB.
Because there is no professional noise meter and professional soundproofing test room, it is tested with the mobile phone APP software. The test time is 12 o'clock in the evening. At this time, the ambient noise is relatively small, the test site is in a closed room, and the environmental noise before the start-up operation is tested. For 21 decibels, the noise value of the test is 52 decibels after the start-up operation. Due to the relationship between the test site and the test APP error, the dehumidifier's noise level should be in accordance with the vehicle logo.
3, temperature test
The test equipment is a quick-contact hygrometer. The temperature of the air outlet and outlet of the dehumidifier is tested. The temperature of the air outlet is measured as 42 degrees, and the return air temperature of the air outlet is 34.2 degrees.
4, power consumption test
The test equipment used is the IvyPlug smart socket. This plug-in can be connected to the mobile phone, use the APP, remote control, power consumption test and so on. Insert the IvyPlug smart socket into the fixed socket at home, and then insert the plug of the dehumidifier into the IvyPlug smart socket.
In the case of no power on, the standby power is 0.88W and the current is 0.04A. Therefore, as long as the plug is plugged into the appliance, it consumes power, but it is not so large. You haven't noticed it. In the strong drying mode, the dehumidifier The operating power of the machine is 375.13W and the current is 1.97A, so it is within the maximum range of the nameplate.
Because 1000W/hour = 1 degree, the standard of Xiamen's electricity fee is 0.4983 yuan/degree, the one-year electricity rate is 3.8413 yuan in standby mode, and the one-year electricity rate is 1637 yuan (if it is not possible to run continuously). 365 days).
Therefore, here, we urge you to use high-power electrical appliances such as air conditioners, range hoods, washing machines, and heaters for home use. When not in use, it is best to remove the plug. This saves energy, protects the environment, and protects the environment. Energy saving, starting from you and me!
Sixth, black technology to explain articles
Each manufacturer advertises its own products and calls its own products using some new technologies. Here is a brief explanation, because some professionalism is too strong. If anything is wrong, please understand.
1, dual core double dehumidification
"Dual-core intelligence, double dehumidification, double hurricane system, equivalent to double the dehumidification effect of a dehumidifier"
Let's look at the traditional dehumidifier. The traditional dehumidifier only has one suction port, one wind wheel, one evaporator, one condenser and one refrigeration system.
Through the dismantling machine above, we know that the European well dehumidifier has two suction outlets, two wind turbines, two evaporators, two condensers, and two refrigeration systems. So it is equivalent to the dehumidification effect of two dehumidifiers. Of course, one more cooling system is added, and the cost of materials increases accordingly. Therefore, “dual-core intelligence, double dehumidification, and double hurricane systems†are not exaggerated.
2, using the screw copper tube
With internally threaded copper tubes, the contact is more complete.
Here we must first explain what is the internal thread copper tube, female thread copper tube, also known as non-smooth tube, the English name INNER GROOVED COPPER TUBE (IGT), refers to the outer surface is smooth, the inner surface has a certain number, a certain regular thread inside Thread TP2 copper tube.
Because of the increase in the internal surface area of ​​the internally threaded copper tube, its thermal conductivity is 20 to 30 percent higher than that of the light tube.
For the current domestic brands, all the heat exchangers use internal screw copper tubes, because the energy level is not improved, and the traditional smooth copper tubes do not reach the national energy efficiency rating. There were some small manufacturers before. The exchanger will use aluminum tubes, because aluminum is cheaper than copper, and some manufacturers will use copper-clad aluminum tubes, that is, to coat the aluminum tubes with copper once again. This is a copper tube from the outside.
3, the use of heat exchanger gold hydrophilic film
Propaganda adopts gold-adjusting hydrophilic membrane, lotus leaf effect technology, and gold adhesion film on the surface, which has long-lasting hydrophilicity.
Here we must first look at popular science. The heat exchanger consists of a copper tube and an aluminum foil. The copper tube is inserted into the aluminum foil. The aluminum foil is a very thin aluminum foil stamped into a specified shape. The thickness of the current domestic aluminum foil is about 0.105. Mm, so easy to process molding, aluminum foil stamping a lot of small holes, easy to heat, at present our company's factory use more two kinds of fins, one is a bridge fin, one is a louver fin. Both types of fins have their own advantages and disadvantages, which are not described in detail here.
Through the front disassemble comparison, the European well dehumidifier uses the shutter type fin form, which is exactly the same as our company shutter type fins. At present, the most common and most commonly used in China is this blind type fin.
Understand the processing technology of fins, let's talk about the fin surface treatment process, what is called hydrophilic aluminum foil in the end. Hydrophilic aluminum foil is a hydrophilic treatment of aluminum foil, and it is treated with a special process, and a hydrophilic layer is coated on the surface of the aluminum foil. The condensed water will quickly spread on the hydrophilic aluminum foil, will not condense into water droplets, and increase heat exchange. Area, to speed up the cooling and heating, but also effectively avoid the noise generated by the condensation of water blocking the flow of air. The general hydrophilic coating is light blue, but in the past two years, the golden layer of hydrophilic water that is popular has been eliminated. In my understanding, in fact, it is the same as the blue hydrophilic layer, but the colors are different. After all, it is now popular local gold. Actually, it should be the same as the traditional blue hydrophilic layer.
4, dump protection
With dump protection, any side of the machine that is tilted more than 30 degrees from the ground will automatically shut off.
In actual use, the dehumidifier is placed horizontally on the ground and the dehumidifier can operate normally.
After the dehumidifier is tilted to the left or forward and tilted to a certain angle, the dehumidifier stops operating.
There should be an anti-dump switch inside the machine. As shown in the figure below, the structure is a free-moving metal object like a weight inside, and a pair of switch contacts. When the appliance is placed horizontally, the metal object will When the two switch contacts are connected, the appliance is electrified and works normally. When the tilt angle of the electrical appliance is too large or is reversed, the dump switch is automatically disconnected and the electrical appliance stops working. This is the working principle of the dump switch.
5, built-in fire box
Fire box has good heat insulation, fire resistance, corrosion resistance and wide application environment, which can effectively prevent the combustion of the machine.
Here to explain first, what is the fire rating UL94, flammability UL94 rating is the most widely used plastic material flammability performance standards. It is used to evaluate the ability of a material to extinguish after being ignited.
The flame retardant grade of plastic is progressively increased from HB, V-2, V-1 to V-0. The highest grade is V-0 grade. The definition of V-0 grade is: After burning the sample twice for 10 seconds, the flame Extinguished in 30 seconds. No burning substance can fall. Generally, the plastic used in the control circuit board of our air conditioners and dehumidifiers is V-0.
In common people's impressions, fire protection should be like metal. Normal combustion does not have any reaction, but the definition of fire protection in plastics is that if it is burned, it must be extinguished automatically if there is no ignition source. However, if the fire is too large, it will be the same. Incinerated.
6, full of water alarm
After the water is full, the machine stops automatically, the water is full of red light, and the buzzer alarms
The principle is that there is a floating ball in the water tank that can rotate freely, and there is a black magnet on the float ball.
A magnetic force sensing device is installed behind the corresponding plastic piece of the magnet. Since the magnetic force can pass through the plastic piece, under normal circumstances, due to gravity reuse, the floating ball is in a vertical state, and the magnetic sensor device senses the magnetic force emitted by the magnet. The circuit is normally energized. Once the water in the tank is full, due to the buoyancy effect, the floating ball with the magnet floats slowly. After reaching a certain distance, the magnetic induction device does not feel the magnetic force from the magnet, and the circuit is disconnected. At this time, the compressor And the motor is stopped, the dehumidification mode is over, so that the water will not overflow.
Seven, dehumidifier composition and decomposition
In order to let everyone further lift the wet machine, share the explosion maps and assembly drawings of some single refrigeration system dehumidifiers (company internal data, top secret oh).
Eight, advantages and disadvantages
1, packaging is acceptable, double carton packaging, double protection.
2, the appearance of simple shape, white tone, Lee edge with rounded design, to prevent scratches.
3, the appearance of the details of the processing is not enough, there are some areas with rough edges and breaks, although not shave, but it will affect the appearance.
4. The tank is recommended to use transparent materials (such as PC/PMMA/AS, etc.) so that you do not need to use the water tank to know where the water level is.
5, Dehumidification effect is obvious, double refrigeration system, increase the amount of dehumidification, increase the amount does not increase.
6, mobile phone control is even more intelligent.
7. Adopt multiple safety protection measures to ensure the safety of use.
8, it is recommended to design the handle, handy for a hand.
9, the front of a screw affect the appearance, it is recommended that the surface design a white rubber cap buckle, blocking the screw.
10, to be continued ~~~~~~
Nine, summary
With regard to the bright future of the smart home market, all future electrical products will develop in this direction, but the problem is that the current standards are not the same. The smart home developed by each manufacturer can only install the manufacturer's APP. Imagine if there are twenty kinds of home appliances. Different brands of smart appliances, mobile phones will be installed on the Twenty different APP, not only to find trouble, use annoying locks, but also a waste of mobile phone resources, and Jingdong micro-joint precisely solve this problem, Jingdong using cloud transfer method, so that different The manufacturer's agreement is connected with the Jingdong micro-joint cloud, so as to solve the problem that different protocols can not communicate with each other. The manufacturers who do not have an agreement are more simple and can directly access through the Jingdong open protocol platform. As long as one APP is installed, all home appliances can be controlled. It is understood that there are more than 500 products currently docked by JD.com, and thousands of products are being docked, covering consumer electronics, kitchen appliances, air conditioners, and wearable devices. So Jingdong is in a big bureau of cloth, layout smart home, refuel it, show years!
