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Gas heat pump working fluid concentration control method

A gas heat pump and control method technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of heavy weight, high cost, large initial investment, etc., and achieve the effect of ensuring high-efficiency operation

Active Publication Date: 2018-02-02
SHANDONG QIWEITE SOLAR TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The disadvantages of the above-mentioned electric air-conditioning units are 1. The cost is relatively high, and the initial investment is large; 2. When the air conditioner is not used for heating in winter, the unit still needs to be energized to prevent freezing; 3. There are many accessories, such as water supply valves, exhaust valves, etc. It is also necessary to install an expansion tank to increase leakage points; 4. The outdoor unit is large in size and heavy in weight, so it is not suitable for use in units with more than 2 floors and apartment-style houses

Method used

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  • Gas heat pump working fluid concentration control method
  • Gas heat pump working fluid concentration control method
  • Gas heat pump working fluid concentration control method

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Set different ammonia water concentration target values ​​at different ambient temperatures, and through PID precise adjustment, ensure that when the ammonia water concentration is greater than the target value, the blower speeds up to increase energy input, and when the ammonia water concentration is lower than the target value, the blower slows down and reduces energy input, thereby To achieve high-efficiency and stable operation of the unit at different ambient temperatures.

[0027] The first step S1: Detect pressure and temperature: place the pressure sensor on the top of the generator, read and record the pressure value, marked as P; place the temperature sensor probe on the bottom of the generator, read and record the temperature of the generator, marked for T.

[0028] The second step S2: Calculate the concentration value X of the generator: according to the pressure value and temperature value obtained in the first step, use the formula between concentration, g...

Embodiment 2

[0037] Set different ammonia water concentration target values ​​at different ambient temperatures, and through PID precise adjustment, ensure that when the ammonia water concentration is greater than the target value, the blower speeds up to increase energy input, and when the ammonia water concentration is lower than the target value, the blower slows down and reduces energy input, thereby To achieve high-efficiency and stable operation of the unit at different ambient temperatures.

[0038] The first step S1: Detect pressure and temperature: place the pressure sensor on the top of the generator, read and record the pressure value, marked as P; place the temperature sensor on the bottom of the generator, read and record the temperature of the generator, marked for T.

[0039] The second step S2: Calculate the concentration value X of the generator: according to the pressure value and temperature value obtained in the first step, use the formula between concentration, generat...

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Abstract

The invention provides a gas heat pump working medium concentration control method, and its specific control steps are: first step S1: detecting pressure and temperature; second step S2: calculating generator concentration value X; third step S3: adjusting. The invention utilizes the change of ammonia water concentration in the generator to control the speed of the blower through PID calculation, so as to achieve the purpose of controlling the energy input. This method effectively ensures the high-efficiency operation of the unit.

Description

technical field [0001] The invention relates to a gas heat pump air conditioner unit, in particular to a method for controlling the concentration of gas heat pump working fluid. Background technique [0002] The commonly used air-conditioning unit in the market is an electric air-conditioning unit, and its electric air-conditioning unit uses a compressor to complete temperature regulation. [0003] 1) The composition of the air conditioning unit [0004] Hermetic compressors, four-way valves, condensers, check valves, capillary tubes, filters, evaporators, gas-liquid separators, and protection devices. [0005] 2) Working principle of air conditioning unit refrigeration [0006] When cooling, the refrigeration compressor sucks the low-temperature and low-pressure refrigerant gas in the evaporator (indoor heat exchanger) into the cylinder, and after the compressor works, it becomes a gas with high pressure and temperature, and then enters the outdoor heat exchanger through ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B49/04
CPCF25B49/04F25B2600/00F25B2700/17F25B2700/19F25B2700/21
Inventor 李文张凤学李振昌季志国姚洪
Owner SHANDONG QIWEITE SOLAR TECH CO LTD