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Heat pump unit adjusting method and device and air conditioner

A technology of a heat pump unit and an adjustment method, applied in the control field, can solve the problems of low reliability, many times of shutdown protection of the heat pump unit, shortening the service life of the unit, etc. Effect

Active Publication Date: 2017-05-31
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is that the shutdown protection times of the heat pump unit are too many, the reliability is low, and the service life of the unit will be shortened

Method used

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  • Heat pump unit adjusting method and device and air conditioner
  • Heat pump unit adjusting method and device and air conditioner
  • Heat pump unit adjusting method and device and air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment provides a method for adjusting the heat pump unit, which can be used for temperature adjustment of the heat pump unit in high temperature protection projects, as follows figure 2 The shown heat pump unit is taken as an example to describe the technical scheme of the embodiment in detail, such as figure 2 As shown, the heat pump unit includes: compressor 1, exhaust temperature sensor 2, four-way valve 3, heat exchanger 4, electronic expansion valve 5 (that is, heat exchanger valve), shell tube 6 and vapor-liquid separator 7 ,Such as figure 1 As shown, the adjustment method of the heat pump unit includes the following steps:

[0031] S11: Obtain the discharge temperature of compressor 1, such as figure 2 As shown, the exhaust gas temperature of the compressor 1 can be acquired in real time by installing an exhaust gas temperature sensing package 2 at the exhaust port of the compressor 1 .

[0032] S12: Determine whether the exhaust gas temperature i...

Embodiment 2

[0053] This embodiment provides a heat pump unit regulating device, which can be used to control the exhaust temperature of the heat pump unit, as follows: figure 2 The shown heat pump unit is taken as an example to describe the technical scheme of the embodiment in detail, such as figure 2 As shown, the heat pump unit includes: a compressor 1, an exhaust temperature sensor 2, a four-way valve 3, a heat exchanger 4, an electronic expansion valve 5, a shell tube 6 and a vapor-liquid separator 7, such as image 3 As shown, the heat pump regulating device includes a first acquisition module 31, a judgment module 32, a second acquisition module 33, a determination module 34 and an adjustment module 35. The functions of each module are as follows:

[0054] The first acquisition module 31 acquires the discharge temperature of the compressor 1 , for details, refer to the detailed description of step S11 in Embodiment 1.

[0055] The judging module 32 is configured to judge whether t...

Embodiment 3

[0065] This embodiment provides an air conditioner 40, which can be used to control the exhaust temperature of heat pump units, such as Figure 4 As shown, it includes the heat pump unit regulating device as in Embodiment 2, so it has all the beneficial effects of the heat pump unit regulating device in Embodiment 2.

[0066] The air conditioner 40 provided by the present embodiment, as figure 2 Taking the heat pump unit shown as an example, when the discharge temperature of compressor 1 is greater than the preset temperature for the first preset time, the rate of change of the discharge temperature of compressor 1 is detected in real time, and the rate of change is determined according to the range of the rate of change. Adjust the opening of the heat exchanger 4 valve in time. If the change rate of the exhaust gas temperature is still in the same range of change rate after the second preset time period, adjust the valve opening of the heat exchanger 4 and cooperate with the...

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Abstract

The invention provides a heat pump unit adjusting method and device and an air conditioner. The method comprises the steps that the exhaust temperature of a compressor is obtained; whether the exhaust temperature is larger than the preset temperature or not within the first time duration is judged; if the exhaust temperature is larger than the preset temperature within the first time duration, the change rate of the exhaust temperature is obtained; the change rate section where the change rate is located is determined; and the opening degree of a heat exchanger valve and / or the running frequency of the compressor are / is adjusted according to the change rate section. According to the technical scheme, the opening degree of the heat exchanger valve and / or the running frequency of the compressor are / is adjusted according to the change rate of the exhaust temperature, the number of protection shutdown times of a heat pump unit is effectively reduced, the service life of the compressor is prolonged, and running reliability of the heat pump unit is improved.

Description

technical field [0001] The invention relates to the technical field of control, in particular to a method and device for adjusting a heat pump unit and an air conditioner. Background technique [0002] At present, with the increasingly serious problem of environmental pollution, people are paying more and more attention to the environmentally friendly low-temperature heating method. With the gradual maturity of low-temperature air source heat pump technology, it is becoming the most energy-saving and environmentally friendly method to replace coal furnace heating and central heating. The air source heat pump unit consists of four major components: evaporator, condenser, compressor, and heat exchanger valves, forming a closed system, which is filled with an appropriate amount of working fluid. The basic principle of unit operation is based on the reverse card cycle principle: the liquid working medium first absorbs the heat in the air in the evaporator and evaporates to form ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B30/02F25B30/06F25B49/02F24F5/00F24F11/00
CPCF24F5/00F24F11/30F24F11/62F24F11/64F24F11/83F24F11/84F24F2203/021F25B30/02F25B30/06F25B49/022F25B2600/025F25B2700/21152
Inventor 孟红武李桂强谷月明姚鸿海宋鹏曾凡卓王晓红朱新袁占彪
Owner GREE ELECTRIC APPLIANCES INC
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