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Self-adaptive type super low temperature refrigeration air conditioner

A technology for ultra-low temperature refrigeration and air conditioners, applied in refrigerators, air conditioning systems, refrigeration components, etc., can solve the problems of compressor circuit liquid shock, condensation pressure, low condensation temperature, damage to the compressor, etc., and achieve simple structure and low investment cost little effect

Inactive Publication Date: 2006-09-06
HISENSE HOME APPLIANCES GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For traditional household air conditioners, cooling operation is performed when the outdoor ambient temperature is lower than 0°C. Because the outdoor air temperature is very low, the condensation pressure and condensation temperature on the outdoor side are very low, and the refrigerant temperature at the condenser outlet can reach 10°C. Below, after passing through the capillary tube parts, its evaporation temperature is often lower than -5°C, and then through the capillary tube throttling, the refrigerant enters the indoor evaporator, which is likely to cause frost and ice saving, affect the circulating air volume inside the room, and affect the cooling effect. Moreover, it is easy to cause liquid shock in the compressor circuit and damage the compressor.
Obviously, traditional household air conditioners do not meet the conditions of low-temperature refrigeration, and cannot meet the requirements of low-temperature refrigeration.

Method used

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  • Self-adaptive type super low temperature refrigeration air conditioner
  • Self-adaptive type super low temperature refrigeration air conditioner
  • Self-adaptive type super low temperature refrigeration air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] as attached figure 1 , Image 6 As shown, the self-adaptive ultra-low temperature refrigeration air conditioner of the present invention includes a refrigeration system made up of a compressor 1, a condenser 3, a capillary part 5 and an evaporator 7 and an electric circuit board 2, a sensor I4, and a sensor II8. control system, wherein the indoor defrosting program is solidified in the electronic control chip on the circuit control board 2. The starting condition of the indoor defrosting program is: when the temperature of the indoor evaporator coil is ≤3°C and the accumulated time is 2 minutes, the indoor defrosting action starts.

[0026] When the air conditioner is in cooling operation, the compressor 1 sends the high-temperature and high-pressure refrigerant to the outdoor condenser 3 for condensation, and the outdoor fan sends the heat released by the condensation of the refrigerant to the outdoor as hot air. The refrigerant passing through the condenser 3 flows ...

Embodiment 2

[0028] Such as figure 2 , Image 6 As shown, the difference between the second embodiment and the first embodiment is that a thermistor 9 is added to the electric control system. Wherein, the added thermistor 9 is arranged on the U-shaped coil of the evaporator 7 and connected with the electronic control chip on the circuit control board 2 . When the outdoor ambient temperature is not very cold, the operation of the self-adaptive ultra-low temperature refrigeration air conditioner of the present invention is the same as that of the traditional household air conditioner; Frost, at this time, the temperature of the refrigeration system is sensed by the thermistor 9, and the electronic control chip judges whether the indoor evaporator 7 is frosted. switch to heating mode) to defrost until the defrost is clean. It has been proved by experiments that the air conditioner using the present invention can still work normally at indoor dry / wet bulb temperature: 27°C / 19°C and outdoor...

Embodiment 3

[0030] Such as image 3 As shown, the difference between the third embodiment and the second embodiment is only that the added thermistor 9 is arranged on the U-shaped coil of the condenser 3 . The temperature of the refrigeration system is sensed by the thermistor 9, and the electronic control chip judges whether the indoor evaporator 7 is frosted. operation mode) to defrost until the defrost is clean.

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PUM

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Abstract

The invention discloses a self-adaptive ultra-low temperature refrigeration air conditioner, which comprises a refrigeration system formed by a compressor, a condenser, a capillary and a steamer; and an electric control system formed by circuit control board and sensor. Wherein, the electric control chip of said circuit control board is fixed with indoor defrost program; said sensor is a thermal sensitive resistance which is connected to the pin of indoor defrost program. When the air conditioner is in low-temperature refrigeration mode, the thermal sensitive resistance feeds the signal back to the electric control chip, via the change of environment temperature to judge if the indoor steamer is frosted; and when meeting the defrost condition, using the rotational speed of outer motor or changing the operation mode (as from the refrigeration operation mode to heating operation mode) to process defrost operation. The invention has simple structure and lower cost.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and relates to a self-adaptive ultra-low temperature refrigeration air conditioner, and more specifically relates to a low temperature refrigeration technology in an outdoor low temperature environment. The utility model belongs to the improvement of the existing split type household air conditioner. Background technique [0002] Existing air conditioners include a refrigeration circuit and an electrical control system, and the refrigeration circuit is composed of a compressor, a condenser, capillary components and an evaporator. The electronic control system includes components such as circuit control board, thermistor, control valve and fan motor. During cooling operation, the air conditioner transfers heat from the indoor to the outdoor through the work of the compressor according to the refrigeration principle. Generally, when the cooling is running, the indoor temperature will be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F1/00F25B47/00
Inventor 严满泉车翔刘新华胡根
Owner HISENSE HOME APPLIANCES GRP CO LTD
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