Air-cooled heat pump air conditioner

An air-cooled heat pump and air-conditioning technology, applied in subcoolers, refrigerators, refrigeration components, etc., can solve the problems of heating attenuation, heat loss compressors, and high exhaust temperature, so as to improve cooling capacity and heating capacity, prevent Frost or freezing, return air resistance avoidance effect

Inactive Publication Date: 2012-09-19
四川同达博尔置业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the temperature range of the operating environment of ordinary air-cooled heat pump air conditioners is generally between -7°C and 43°C. In the cold northern regions, the heating function of existing air-cooled heat pump air conditioners can only be It is used in transitional seasons. Once it enters the cold and severe winter season, it can hardly meet the basic heating demand, and even the air conditioning unit cannot start and run normally.
The main problem of the existing air-cooled heat pump air-conditioning unit is that under the condition of low temperature outdoors, the heating capacity attenuation is very serious, the phenomenon of frost condensation and bottom freezing of the outdoor coil is serious, and frequent defrosting will cause heat loss and damage the compressor. With liquid, the high pressure ratio operation of the compressor brings problems such as high exhaust temperature, which to a large extent limits the promotion and application of air-cooled heat pump air conditioners in the northern market

Method used

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Examples

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Effect test

no. 1 example

[0036] figure 1 The first embodiment of the air-cooled heat pump air conditioner according to the present invention is shown, which includes a compressor 1, an outdoor coil 3, a use-side heat exchanger 4, a main liquid pipeline and a supercooling device, wherein the outdoor coil 3 It is used as an evaporator in the heating operation of the air conditioner and a condenser in the cooling operation of the air conditioner; the use side heat exchanger 4 is used as an evaporator in the cooling operation of the air conditioner and a condenser in the heating operation of the air conditioner; the main liquid The pipeline connects the compressor 1, the outdoor coil 3 and the use-side heat exchanger 4 in fluid communication, and the liquid refrigerant circulates in the main liquid pipeline; the subcooling device is arranged on the main liquid pipeline and circulates in the main liquid pipeline The liquid refrigerant can achieve multiple subcooling through the subcooling device.

[0037]...

no. 2 example

[0068] image 3 It is a schematic diagram of the principle of the second embodiment of the air-cooled heat pump air conditioner according to the present invention. From image 3 It can be seen from the figure that the difference between the second embodiment of the air-cooled heat pump air conditioner according to the present invention and the first embodiment is that in the second embodiment, one of the first embodiment is replaced by three parallel throttling mechanism assemblies Electronic expansion valve 9. The main throttling mechanism of the second embodiment is composed of three throttling mechanisms connected in parallel: the first throttling mechanism is an external balance thermal expansion valve, and its external balance pipe is connected to the compressor suction pipeline (that is, at point S); The temperature sensing package is close to the point S on the suction pipeline; the second throttling mechanism is composed of a solenoid valve 30 and a capillary tube 32...

no. 3 example

[0073] Figure 4 It is a schematic diagram of the principle of the third embodiment of the air-cooled heat pump air conditioner according to the present invention. From Figure 4 It can be seen from the figure that the difference between the third embodiment and the first embodiment and the second embodiment is that in the third embodiment, the cooling and heating operations use their respective main throttling mechanisms independently, and the first throttling mechanism is omitted. The one-way valve assembly in the embodiment and the second embodiment. Such as Figure 4 As shown, when the cooling is running, the main throttling mechanism is the cooling electronic expansion valve 91, which is set between the point K2 and the point R1, and as close as possible to the point K2; when the heating is running, the main throttling mechanism is the heating electronic The expansion valve 92 is arranged between the point H1 and the point G1, and is as close to the point H1 as possibl...

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PUM

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Abstract

The invention discloses an air-cooled heat pump air conditioner which comprises a compressor, an outdoor coil, a heat exchanger, a main liquid line and supercooling devices, wherein the supercooling devices comprise two or three of a supercooling coil, an economizer and a liquid-vapor separator with a supercooling function, the supercooling devices are arranged on the main liquid line, and liquid state refrigerants which circulate in the main liquid line can achieve repeatedly the supercooling through the supercooling devices. According to the air-cooled heat pump air conditioner, the performance of cooling/heating circulation of the air-cooled heat pump air conditioner is effectively improved, so that the air-cooled heat pump air conditioner is stable and reliable in operation and energy saving in a low-temperature environment.

Description

technical field [0001] The invention relates to the field of air conditioners, and more specifically relates to an air-cooled heat pump air conditioner, which has a good heating effect especially in outdoor ultra-low temperature conditions. Background technique [0002] At present, in the cold regions of northern my country, the traditional central heating method is mainly coal-fired. This heating method is inferior to air-cooled heat pump air conditioners (also known as air source heat pump air conditioners) in terms of energy saving, environmental protection and safety. The advantage of using an air-cooled heat pump air conditioner for heating is that it only takes heat from the air, has no soot emission, and does not pollute the environment. Centrally used air-cooled heat pump air conditioners are mainly integrated air-cooled heat pump air conditioners, which provide air-conditioned chilled water for user terminals in summer and heating hot water for user terminals in win...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B13/00F25B40/02F25B41/06F25B41/04
Inventor 梁玉祥
Owner 四川同达博尔置业有限公司
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