Selection of refrigerator structure form
Household refrigerators have many structural forms. At present, there are two refrigerators, three refrigerators and four refrigerators in the domestic market. The increase of refrigerator doors means that the space divided into different temperature ranges in the refrigerator increases, which makes the function of the refrigerator more perfect. The two-door refrigerator has the functions of refrigeration and freezing. The freezer has a large volume and belongs to three stars, which can store food for a long time. It is an ideal refrigerator for families.
Compared with the double-door refrigerator, the three-door electric cabinet has a slightly higher temperature, heat preservation and moisture preservation room, which is located at the lower part of the refrigerator. Therefore, articles with different storage temperature requirements can be placed in different doors. In this way,
It can reduce the mutual interference between stored items and reduce the loss of cold energy, and its characteristics are basically the same as those of a two-door refrigerator. Four-door refrigerator is an ideal luxury household refrigerator. Because of its large size, complete functions and complex structure, it is expensive and consumes a lot of electricity. This refrigerator is suitable for consumers with high economic level and spacious living conditions.
Selection of Refrigeration Mode of Refrigerator
Refrigerators are divided into direct-cooling refrigerators (with frost) and indirect-cooling refrigerators (without frost). See the table below for a comparison of their performance characteristics:
Refrigerators are divided into direct-cooling refrigerators (with frost) and indirect-cooling refrigerators (without frost). See the table below for a comparison of their performance characteristics:
Direct cooling refrigerator indirect cooling refrigerator
The structure is simple and complicated. Compared with the direct cooling refrigerator, the cooling speed is a little faster. The cold air in the box naturally convects, and the cooling speed is slow. The air fan in the box forced convection, and the cooling speed was fast.
Food with freezing speed is in direct contact with the evaporator surface of the freezing chamber, so the freezing speed is fast and slightly slow, but the frozen food will not stick to the surface of the freezing chamber.
Convenient access, fast ice making speed, slightly slower ice making speed, and the prepared ice cubes are more transparent.
Temperature uniformity The cold air in the box naturally convects, but the temperature uniformity is slightly worse. The cold air in the box forced convection, and the temperature uniformity was good.
Defrosting Manual defrosting or semi-automatic defrosting is troublesome to operate, and full-automatic defrosting has little influence on the temperature of stored food and is convenient to use.
Temperature adjustment There is a thermostat in the refrigerator, and the temperature of the freezing room in the refrigerator cannot be adjusted separately. The refrigerator and freezer have two thermostats, which can adjust the temperature of the refrigerator and freezer respectively.
Power consumption: low power consumption and high power consumption, which is generally 5- 15% higher than that of direct cooling.
Cheap and expensive, generally more expensive than direct cooling 10-20%.
On-site selection of refrigerator
1. When choosing a refrigerator on site, the first thing is the appearance, and the shape of the refrigerator should be beautiful and generous. The periphery of the box and the door should be straight, the assembly should be firm, the door should not be skewed, and the clearance between the rotating shaft and the shaft pin should be well matched. When the door is pushed and pulled by hand, it should feel flexible. The color of the surface coating (spray paint or powder) of the refrigerator should be uniform and bright, and there should be no marks of pitting, corrosion, bumping or scratching. The electroplated parts of the refrigerator should be bright and fine, and no coating will fall off. Contact points of doors, boxes and door wings,
Foam liquid shall not leak. The surfaces of lining plates and door lining plates shall be smooth and flat. Especially in the vicinity of excessive fillet, more attention should be paid. The size of the shelf should be moderate. Visually check whether the door seal and box of refrigerator are flat and tight. The knob of the temperature controller should rotate flexibly. After the defrosting button is pressed and released, it should be able to bounce back to its original position quickly. In addition, you can check whether the accessories of the refrigerator are complete according to the instruction manual of the refrigerator. 2. Power on the refrigerator to check the refrigeration performance and electrical performance. Turn the thermostat in the refrigerator to the "stop" position, turn on the power supply, and check the light switch and lighting. When the door is open, the lighting should be on, and when the door is close to full close, the lighting should be off. Then adjust the thermostat to the strong cold point, the compressor of the refrigerator starts to run, and all the electrical components of the refrigerator should work normally. After five minutes, touch the condenser of the refrigerator (both sides or back of the refrigerator) with your hands, and you should feel the heat. The sooner you heat it, the better. When you open the refrigerator door, you should feel cold by touching the evaporator. Close the door for about 20 minutes, and the condenser is already very hot. Open the door and look at the evaporator carefully. There should be a thin and even layer of frost on it. If the frost on the evaporator is uneven or there is no frost on a certain part, it means that the refrigeration performance of the refrigerator is not good. For an indirect refrigerator, after 20 minutes, open the door and press the fan switch by hand. At this point, the cold air blows out at the tuyere. Finally, adjust the thermostat? Quot stop "position, the compressor should stop working.
3. Noise check: When you check the refrigeration performance of the refrigerator, you can hear the slight running sound of the compressor, while the indirect cooling refrigerator can hear the faint and low fan sound when the fan rotates. When you touch the refrigerator box, you can feel a slight vibration.
Pay attention to the correctness of the refrigerator after buying it back, and generally put it in a place that avoids direct sunlight, humidity and heat sources. It should be placed on a stable or solid ground, otherwise it will enhance vibration and noise, and the refrigerator should be placed in a place with good air circulation as far as possible. And there should be some space around. Before using the refrigerator, scrub the inner container and other accessories of the refrigerator with warm water. After drying, put the accessories in their respective positions according to the instructions. Plug the power plug of the refrigerator into a special socket. (Power supply for refrigerator: single-phase AC 220+- 10%, frequency 50HZ) The lights in the refrigerator are on, and the refrigerator door is closed. The refrigerator will start to operate, and food can be put in two hours after it is checked to be normal.
In addition, it should be noted that the outside of the refrigerator and the box can not be watered directly, so as to avoid water leakage and corrosion of metal parts. Please unplug the power plug before maintenance to ensure personal safety. It is forbidden to store flammable, explosive and volatile articles such as ether, gasoline and adhesive in the refrigerator. The refrigerator cannot be used in flammable gas environment. If gas or liquefied gas leaks, you should first close the valve and open the doors and windows to let the air circulate. Never unplug the power plug first, so as not to cause electric sparks and explosions. Don't touch the food and containers in the freezer with wet hands to avoid frostbite at low temperature.
The sooner it gets hot, the better. When you open the refrigerator door, you should feel cold by touching the evaporator. Close the door for about 20 minutes, and the condenser is already very hot. Open the door and look at the evaporator carefully. There should be a thin and even layer of frost on it. If the frost on the evaporator is uneven or there is no frost on a certain part, it means that the refrigeration performance of the refrigerator is not good. For an indirect refrigerator, after 20 minutes, open the door and press the fan switch by hand. At this point, the cold air blows out at the tuyere. Finally, adjust the thermostat? Quot stop "position, the compressor should stop working. 3. Noise check: When you check the refrigeration performance of the refrigerator, you can hear the slight running sound of the compressor, while the indirect cooling refrigerator can hear the faint and low fan sound when the fan rotates. When you touch the refrigerator box, you can feel a slight vibration.
Pay attention to the correctness of the refrigerator after buying it back, and generally put it in a place that avoids direct sunlight, humidity and heat sources. It should be placed on a stable or solid ground, otherwise it will enhance vibration and noise, and the refrigerator should be placed in a place with good air circulation as far as possible. And there should be some space around. Before using the refrigerator, scrub the inner container and other accessories of the refrigerator with warm water. After drying, put the accessories in their respective positions according to the instructions. Plug the power plug of the refrigerator into a special socket. (Power supply for refrigerator: single-phase AC 220+- 10%, frequency 50HZ) The lights in the refrigerator are on, and the refrigerator door is closed. The refrigerator will start to operate, and food can be put in two hours after it is checked to be normal.
In addition, it should be noted that the outside of the refrigerator and the box can not be watered directly, so as to avoid water leakage and corrosion of metal parts. Please unplug the power plug before maintenance to ensure personal safety. It is forbidden to store flammable, explosive and volatile articles such as ether, gasoline and adhesive in the refrigerator. The refrigerator cannot be used in flammable gas environment. If gas or liquefied gas leaks, you should first close the valve and open the doors and windows to let the air circulate. Never unplug the power plug first, so as not to cause electric sparks and explosions. Don't touch the food and containers in the freezer with wet hands to avoid frostbite at low temperature.