The application of water evaporative cooling is the largest, because the water of refrigeration working medium is cheap and easy to get, and the evaporation heat value is high. Water evaporation methods can be subdivided into spray type, air-permeable water curtain type, water-permeable cold plate type, porous water-permeable grid type and so on. And its * * * heart part is L sets (or two sets) of fans. Theoretically speaking. At 30℃, the vaporization calorific value of water is about 245 1J/g, that is, 1g water can absorb 245 1J when it is completely evaporated. If the evaporation process is completed within 1s, and the rate remains unchanged, its refrigeration power is equivalent to 245l, which is equivalent to 1 KC24 single cooling window machine. Because the refrigeration effect of this kind of fan mainly depends on the ambient humidity and longitudinal speed, it is not difficult for this technology to achieve good results in dry and hot areas of China. However, in the vast hot and humid areas in the south, due to the high average temperature in summer, the relative humidity is close to saturation, and even if water mist is sprayed, it rarely becomes water vapor. Of course, far from absorbing much heat of vaporization. On the contrary, it will increase indoor humidity and aggravate people's discomfort. In order to improve the refrigeration effect of this humidifying air cooler, Fuzhou Zonghe air cooler put forward perfect measures, such as using a group of cold plates to separate the blown dry air from the blown wet air and exchange heat at the same time; And the scheme of absorbing moisture first and then humidifying and cooling, that is, absorbing moisture with calcium chloride, lithium chloride or quicklime to make it become dry air with relative humidity of about 5%, and then humidifying and cooling. Multi-stage dehumidification and humidification can be realized as required, and the absorbed calcium chloride can be recycled in the sun.
Underground air coolers can be divided into three types according to their cold sources: groundwater, tap water and underground air. The first two types need to use a fan to introduce water into the indoor heat exchanger, absorb indoor heat and then discharge it outside, so the water consumption is large. For example, a patent stipulates that the water flow per hour needs to be greater than 180 liters (0. 18 tons), and this air cooler is only suitable for rural and urban residents who can drill wells to get water. Tap-water air cooler is difficult to be accepted by urban residents because of its large water consumption, high water temperature and poor refrigeration effect. Underground air coolers are only suitable for residents near civil air defense facilities, basements and other places, and the cold air pumped out often has peculiar smell, which has no universal significance.
The semiconductor refrigeration fan uses the Peltier cold and heat effect, which has the advantages of no noise, fast refrigeration speed, continuously adjustable refrigeration capacity, compact structure, no fear of vibration, small volume, light weight, long service life and convenient installation and use. The factors affecting popularization are low energy efficiency and the need for special DC (rectifier) power supply.
There are two schemes for refrigerator refrigeration. One is to add a fan system to the existing refrigerator, which is equivalent to a low-power air conditioner and has two functions. The second is to put the refrigerant (cold core) or ice cubes processed in the refrigerator into a specially designed fan to blow out cold air. For example, use highly efficient refrigerated particles. Its cold equivalent is 8 times that of ice, and the weight of the ball is 1.5kg. The total refrigeration capacity is 4800kJ, and the primary refrigeration can work continuously for 5 hours. This kind of air cooler has limited cooling capacity. It is only suitable for small-scale cooling.
A number of patents put forward low-power air conditioning schemes such as air conditioning tents, air conditioning bedspreads and small air conditioning rooms. Their power consumption is about 200 watts, which is equivalent to that of refrigerators. The problem is that this kind of air conditioner has low energy efficiency and small enclosed area, and the air freshness will soon deteriorate.
Solar refrigeration system can be divided into three basic types: adsorption/desorption, absorption and compression. The refrigeration capacity can be obtained according to the principles of compression refrigeration cycle, absorption-evaporation cycle, heat pump or solid adsorption. Theoretically, the greater the intensity of solar radiation, the greater the refrigeration capacity, and the prospect seems optimistic. However, due to the low COP value of solar refrigerator, it is reported that to obtain 2000 watts of cooling power, it is necessary to equip with 10 square meter heat collector, and the cost is as high as 8000 yuan.
In addition, a few patents put forward technical schemes such as heat pipe refrigeration system with liquid ammonia as working medium, gas refrigeration system with liquid ammonia or bromide as working medium, refrigeration system with saturated solution of inorganic salts such as ammonium chloride to filter heat, and its production feasibility needs further demonstration. First of all: remove the wet curtain (* * * in no particular order. )
1. First unscrew the three screws on the upper part of the wet curtain.
2. Hold the blinds on the upper part of the wet curtain, gently pull out the wet curtain and lift it gently to remove it.
Second: Remove the top cover and water distribution pipe assembly.
1. First unscrew the screw on the top cover, then lift the top cover and take it off.
2. Loosen the hose and hose, lift and remove the water distribution pipe assembly.
Third: clean the water distribution pipe.
1. If the hole in the water distribution pipe is blocked, it can be hollowed out with iron wire.
2. Clean the stains on the water distribution pipe with clean water.
Fourth: Cleaning of chassis and accessories.
1. Chassis cleaning: Clean the chassis with a soft cloth or brush.
2. Cleaning the blade: Try to wipe the blade with a soft cloth. Be careful not to let the dust on the blades fall into the air duct.
3. Clean the water level sensor: use a small wet cloth to clean the dirt on the water level.
4. Clean the water pump: clean the dirt on the water pump and its filter screen with a brush.
5. Cleaning the clothes drain valve: Pay attention to the dirt at the bottom of the drain valve.
Fifth: wet curtain cleaning.
1. Wash the wet curtain from the inside out with clean water (note: the water pressure should not be too high during cleaning, and it is forbidden to use acidic or alkaline detergent to clean the wet curtain.
2. Filter: The filter can be taken out and cleaned once a week. (provided it has a screen model).
Sixth: clean the filter. The cleaning method is as follows:
1. Unscrew the filter back cover:
2. Remove the dirt on the filter element: replace the rear cover.
Seventh: After cleaning, put the whole machine back in the reverse order of disassembly steps. Warning: When cleaning this machine, please stop the machine and turn off the power supply, otherwise this machine may be in danger of electric shock or other injuries to human body. First: wall-mounted description of bottom air outlet unit
Technical requirements:
1, triangle bracket should be welded and installed firmly;
2, the maintenance platform must be able to support the weight of the unit and maintenance personnel;
3, the host installation must be level;
4. The cross sections of the main engine flange and the air supply elbow must be flush;
5. All outdoor air ducts shall be waterproof;
6, the main junction box must be installed beside the temple, easy to maintain;
7, duct elbow temple do waterproof bending, prevent water from flowing into the room.
Second: wall-mounted installation instructions for the top air outlet device.
The 40*40*4 angle iron frame is connected with the bolt field of the wall or window plate, rubber is padded between the air duct and the angle iron frame to prevent vibration, and all gaps are sealed with glass or cement mortar. The air supply elbow should be made according to the requirements of the drawings, and the cross-sectional area should be not less than 0.45 square meters. When installing the air duct, the suspender should be installed on the installation chassis, so that all the weight of the air duct can be hung on the chassis.
Technical requirements:
1, and the bracket shall be welded and installed firmly;
2, the platform must be able to support the weight of the unit and maintenance personnel;
3, the installation must be level;
4, flange and air supply elbow part must be flush;
5, the exterior wall duct should be waterproof;
6, junction box must rely on the temple installation, easy to maintain;
7, elbow temple do waterproof bending, prevent water from flowing into the room.
Third: Installation instructions of zinc-iron tile roof.
Technical requirements:
1, the roof truss should have enough strength to bear the weight of the unit and maintenance personnel;
2, the roof opening size should be no greater than the duct installation size of 20mm；;
3, the installation must be level;
4. The cross sections of the main engine flange and the air supply elbow must be flush;
5, all zinc iron tile duct should be waterproof;
6. The four corners must be supported.
Fourth: Installation instructions of cement roof.
Technical requirements:
1, using 40*40*4 angle steel frame to connect and fix with reinforced concrete bolts;
2, roof truss should have enough strength to bear the weight of the unit and maintenance personnel;
3, roof opening size should be no greater than 20mm； of duct installation size;
4, the installation must be level;
5. The cross sections of the main engine flange and the air supply elbow must be flush;
6. All roof air ducts shall be waterproof;
7. The four corners must be supported.
Specification of air supply elbow
1. In order to ensure the minimum air supply resistance, the radius of curvature of the air duct from the main engine should be twice the pipe diameter. Cut on the board of 1500* 1500. The radius of curvature of other indoor elbows is also 2 times of the pipe diameter. The best air supply effect can be achieved with each other.
2. In addition to the general installation process, the outdoor air is installed with silencing cotton, and the wind force is concentrated in the air duct for about 3 meters, so that the wind force and wind pressure form a torrent that constantly impacts the air duct, and the collision produces the original appearance of noise. In front of the indoor air duct 2-3 meters, noise elimination measures are uniformly adopted, that is, noise elimination cotton or fire sponge is stuck on the inner diameter of the air duct, which greatly strengthens the noise elimination area and reduces the power of wind pressure impacting the air duct.
Underframe and seismic description
Shockproof installation method:
1. The plastic chassis is shockproof by shockproof feet. There is a M 10 nut at the upper and lower ends of the angle iron to adjust the level of the machine.
2. The distance from the center of the shockproof foot to 890*890 must be accurate to prevent the chassis from being deformed in long-term operation. A. Pre-season maintenance: Before the use season begins, check whether there are obstacles around the unit and the air inlet.
B. Use and maintenance of the unit: Pay attention to the cleanliness of the chassis and press the "Clean" button every day to prevent bacteria and odor.
C. Regular maintenance of the unit: the unit runs for 1-2 months. If the wet curtain and filter screen are blocked or the chassis is too dirty, it should be cleaned to avoid machine failure.
D. End-of-season maintenance: (Don't use it for a long time, remember to drain the water and cut off the power! ) In order to prevent freezing from harming the body and breeding mosquitoes, when you stop using it for a long time, turn off the tap water, press the cleaning button to drain water and cut off the power supply.
E. Internal cleaning of the unit: If the unit runs for a long time, it must be cleaned every 1 or 2 months to ensure the cooling effect;