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Air conditioner

A technology for air conditioners and container expansion, which is applied in the direction of compressors with reversible cycles, lighting and heating equipment, damage protection, etc., can solve the problems of reduced human comfort, reduced indoor temperature, and reduced indoor temperature

Inactive Publication Date: 2010-06-09
GUANGDONG MIDEA ELECTRIC APPLIANCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in such a defrosting method, since the heat exchanger on the indoor side becomes an evaporator during defrosting, there is a problem that the indoor temperature drops and the user suddenly feels chilly.
Although air-conditioning designers often turn off the indoor fan to reduce the cooling capacity entering the room, or detect the temperature of the heat exchanger, when the temperature is lower than the set value, turn off the fan to supply air, etc. to reduce the impact of defrosting on the indoor temperature and human body feeling. However, in the cold winter, stopping the indoor heating will inevitably reduce the indoor temperature and reduce the comfort of the human body.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] figure 1 with figure 2 It is a schematic flow diagram of the refrigeration / heating cycle and a schematic flow diagram of the heating-defrosting cycle in Embodiment 1 of the present invention. figure 1 Among them, the indoor unit 14 includes an indoor heat exchanger 3, and the outdoor unit 15 includes a compressor 1, a four-way valve 2, a first throttling mechanism 4, an outdoor heat exchanger 5, an injection enthalpy increasing bypass circuit 6, and an injection Enthalpy-increasing throttling mechanism 8, defrosting bypass circuit 9, defrosting automatic control valve 10, compressor intermediate suction port 12, compressor gas-liquid separator 21 in return air pipe. Here, the first throttling mechanism 4 is an electronic expansion valve, the injection enthalpy increasing throttling mechanism 8 adopts an electronic expansion valve, and the defrosting automatic control valve 10 selects a control valve with an on-off function and a certain throttling capacity.

[0029] ...

Embodiment 2

[0033] as attached image 3 As shown, the difference between this embodiment and Embodiment 1 is that a second throttling mechanism 13 is added between the injection enthalpy increase bypass circuit 6 and the indoor heat exchanger 3 , and on the injection enthalpy increase bypass circuit 6 , the injection enthalpy increase automatic control valve 7 is added, and the injection enthalpy increase throttling mechanism 8 uses a capillary tube to control the flow rate of the working fluid passing through the injection enthalpy increase bypass circuit 6 . Through the second throttling mechanism 13 , the first throttling mechanism 4 and the injection enthalpy increasing throttling mechanism 8 to control the flow rate and pressure drop of the respective circuits. A throttling mechanism 11 for defrosting is added behind the original automatic defrosting control valve 10. The automatic defrosting control valve 10 adopts an electric two-way valve, and the throttling mechanism 11 for defro...

Embodiment 3

[0035] as attached Figure 4 As shown, the difference between this embodiment and Embodiment 2 is that: a liquid separation expansion vessel 16 is added between the injection enthalpy increase bypass circuit 6, the first throttling mechanism 4 and the second throttling mechanism 13, wherein the injection increase The enthalpy bypass circuit 6 is connected to the upper part of the liquid separation expansion vessel 16, the first throttling mechanism 4 is connected to the lower part of the liquid separation expansion vessel 16, and the second throttling mechanism 13 is connected to the middle part of the liquid separation expansion vessel 16. The liquid separation expander 16 is equivalent to the effect of a heat exchanger, which can fully vaporize the internal decompression working medium, so that the working medium flowing from the injection enthalpy increasing bypass circuit 6 to the intermediate suction port 12 of the compressor is a gaseous working medium. Mainly, increase ...

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Abstract

The invention relates to an air conditioner comprising a refrigerating / heating loop and an air conditioner controlling device, wherein the refrigerating / heating loop is formed by connecting a compressor, a four-way valve, an indoor heat exchanger, a throttling mechanism and an outdoor heat exchanger in sequence; the air conditioner controlling device is used for controlling various components of the air conditioner to act according to a control signal; the refrigerating / heating loop is provided with an injection enthalpy-gaining bypass loop and a defrosting bypass loop; one end of the injection enthalpy-gaining bypass loop is connected with an air-suction port in the middle of the compressor and the other end of the injection enthalpy-gaining bypass loop is connected between the throttling mechanism and the indoor heat exchanger; the injection enthalpy-gaining bypass loop is at least provided with an injection enthalpy-gaining throttling mechanism; one end of the defrosting bypass loop is connected between the four-way valve and the indoor heat exchanger and the other end of the defrosting bypass loop is connected between the throttling mechanism and the outdoor heat exchanger; the defrosting bypass loop is provided with an automatic defrosting control valve and a throttling mechanism for defrosting; the air conditioner is also internally provided with a defrosting condition detection unit; and the defrosting condition detection unit and the automatic defrosting control valve are in signal connection with the air conditioner controlling device.

Description

technical field [0001] The present invention relates to a refrigeration / heat pump system with the function of increasing enthalpy by spraying, in particular to a cooling / heat pump system which can continue to defrost the frost attached to the outdoor heat exchanger while the heat pump is in heating operation. Refrigeration / heat pump system with injection enthalpy function. Background technique [0002] At present, the air conditioner with injection enthalpy function is used in low temperature heating conditions, and has a good heating effect, and its cooling capacity is also relatively good. For cold regions, its use is becoming more and more common. [0003] As disclosed in the invention patent application publication 200610115719, the expansion liquid separator receives the liquid refrigerant from the heat exchanger. Since the expansion liquid separator is kept at a lower pressure than the inlet liquid refrigerant, some liquid refrigerant vaporizes, The remaining liquid ...

Claims

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Application Information

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IPC IPC(8): F25B13/00F25B47/02F25B41/06F25B49/02
Inventor 刘阳
Owner GUANGDONG MIDEA ELECTRIC APPLIANCES CO LTD
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