Energy-saving control method for variable-frequency heating heat pump

A control method and frequency conversion controller technology, applied in heating methods, refrigerators, household heating and other directions, can solve the problems of not taking into account the operating frequency of the compressor, the energy-saving advantages of frequency conversion technology can not be well exerted, and achieve good results. The effect of the energy saving effect

Active Publication Date: 2018-10-09
广东瑞星新能源科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from the above that the existing control methods of variable frequency heating heat pumps do not take into account the influence of compressor operating frequency when defining the optimal energy efficiency superhea

Method used

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  • Energy-saving control method for variable-frequency heating heat pump
  • Energy-saving control method for variable-frequency heating heat pump

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Such as Figure 1~2 As shown, this embodiment provides an energy-saving control method for frequency conversion heating heat pump, including the following steps:

[0026] Step 1, prepare a frequency conversion heating heat pump consisting of a condensing heat exchanger 1, an electronic expansion valve 2, an evaporating heat exchanger 3, a four-way valve 4, a frequency conversion compressor 5 and a frequency conversion controller (not shown in the figure); wherein, The two openings of the four-way valve 4 are connected to the condensing heat exchanger 1, the electronic expansion valve 2 and the evaporation heat exchanger 3 in sequence, and the other two openings of the four-way valve 4 are connected to the inverter compressor 5, and the electronic expansion valve 2 , the four-way valve 4 and the frequency conversion compressor 5 are all connected with the frequency conversion controller;

[0027] In step 2, a condensation temperature sensor 6 and a water temperature sen...

Embodiment 2

[0035] Such as Figure 1~2 As shown, this embodiment provides an energy-saving control method for frequency conversion heating heat pump, including the following steps:

[0036] Step 1, prepare a frequency conversion heating heat pump consisting of a condensing heat exchanger 1, an electronic expansion valve 2, an evaporating heat exchanger 3, a four-way valve 4, a frequency conversion compressor 5 and a frequency conversion controller; wherein, the four-way valve 4 The condensing heat exchanger 1, the electronic expansion valve 2 and the evaporating heat exchanger 3 are sequentially connected between the two openings, the other two openings of the four-way valve 4 are connected to the inverter compressor 5, the electronic expansion valve 2, the four-way valve 4 and the Frequency conversion compressor 5 is all connected with frequency conversion controller;

[0037] In step 2, a condensation temperature sensor 6 and a water temperature sensor 7 are respectively installed on t...

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Abstract

The invention belongs to the technical field of air source heat pumps, and particularly relates to an energy-saving control method for a variable-frequency heating heat pump. The method comprises thesteps that firstly, an operation frequency control mathematical model of a variable-frequency compressor is built, and the operation frequency of the variable-frequency compressor is set according tothe real-time load requirement, wherein the real-time load requirement is related with environment temperature, water temperature, set target water temperature, water temperature change rate and the corresponding optimal efficiency frequency under the environment temperature and water temperature; secondly, the function relation of the optimal energy efficiency superheat degree phi with the operation frequency of the compressor, environment temperature and water temperature under different environment temperature and water temperature is built, and the opening degree of an electronic expansionvalve is adjusted according to the deviation value of the real-time superheat degree and the real-time optimal energy efficiency superheat degree. A control system built on the basis of the control method can make the variable-frequency heating heat pump always operate with the optimal energy efficiency and achieve the best energy-saving effect, and the energy-saving advantage of the variable-frequency heating heat pump is fully played.

Description

technical field [0001] The invention belongs to the technical field of air source heat pumps, in particular to an energy-saving control method for frequency conversion heating heat pumps. Background technique [0002] Compared with fixed-frequency air-source heating heat pumps, variable-frequency air-source heating heat pumps can change loads, heat quickly, are more energy-saving, more environmentally friendly, and have better comfort. Frequency-variable air-source heating heat pumps have been more and more widely used. However, whether these advantages of the frequency conversion heating heat pump can be played well depends mainly on the control method. A good control method and control logic can make the efficiency and superiority of the frequency conversion heat pump play to the best effect, and the key to its control is the frequency conversion compression. Engine frequency control and throttling device electronic expansion valve opening control. [0003] The current co...

Claims

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Application Information

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IPC IPC(8): F24D15/04F24D19/10F25B13/00F25B41/06F25B41/34
CPCF24D15/04F24D19/1006F25B13/00F25B41/31Y02B30/70
Inventor 李国华
Owner 广东瑞星新能源科技有限公司
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