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Heat pump unit adjustment method, device and air conditioner

A technology of a heat pump unit and an adjustment method, which is applied in the field of control, and can solve the problems of shortening the service life of the unit, many shutdown protection times of the heat pump unit, and low reliability, so as to achieve the effects of reducing the number of protection shutdowns, avoiding damage, and improving operation reliability

Active Publication Date: 2019-11-01
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 adjustment method, device and air conditioner
  • Heat pump unit adjustment method, device and air conditioner
  • Heat pump unit adjustment method, 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 the high temperature protection project. figure 2 The heat pump unit shown as an example will explain in detail the technical solutions of the embodiments, 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 (ie heat exchanger valve), shell tube 6 and vapor-liquid separator 7 ,Such as figure 1 As shown, the heat pump unit adjustment method includes the following steps:

[0031] S11: Obtain the discharge temperature of compressor 1, such as figure 2 As shown, the exhaust gas temperature sensor 2 can be provided at the exhaust port of the compressor 1 to obtain the exhaust temperature of the compressor 1 in real time.

[0032] S12: Determine whether the exhaust gas temperature is greater than the preset temperature within the fi...

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. figure 2 The heat pump unit shown as an example will explain in detail the technical solutions of the embodiments, such as figure 2 As shown, the heat pump unit includes: a compressor 1, an exhaust gas 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 unit adjustment 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 acquiring module 31 acquires the exhaust temperature of the compressor 1, for details, refer to the detailed description of step S11 in Embodiment 1.

[0055] The judging module 32 is used to judge whether the exhaust gas temperat...

Embodiment 3

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

[0066] The air conditioner 40 provided in this embodiment is as follows figure 2 Take the heat pump unit shown as an example. When the exhaust temperature of compressor 1 continues to be greater than the preset temperature for the first preset period of time, the rate of change of the exhaust temperature of compressor 1 is detected in real time, and the rate of change is based on the rate of change interval. Adjust the valve opening of the heat exchanger 4 in time. If the change rate of the exhaust temperature is still in the same change rate range after the second preset period of time, adjust the valve opening of the heat exchanger 4 while cooperating with the com...

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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 present invention relates to the field of control technology, in particular to a heat pump unit adjusting method, device and air conditioner. Background technique [0002] At present, with the increasingly serious environmental pollution problem, people are paying more and more attention to environmentally friendly low-temperature heating methods. With the gradual maturity of low-temperature air-source heat pump technology, it is becoming the most energy-efficient and environmentally friendly alternative to coal stove heating and central heating. The air source heat pump unit is composed of four main components: evaporator, condenser, compressor, and heat exchanger valve to form a closed system, which is filled with a proper amount of working fluid. The basic principle of unit operation is based on the principle of reverse card circulation: the liquid working fluid first absorbs the heat in the air in the evaporator to evaporate to form steam (vaporizat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B30/02F25B30/06F25B49/02F24F5/00F24F11/64F24F11/84
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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