Three-pressure efficient air cooled heat pump water heater suitable for high and low temperature environment

An air-cooled heat pump and water heater technology, applied in the field of air-conditioning heat pumps, can solve the problems of decreased heating capacity and energy efficiency ratio, high compression ratio of compressors, high exhaust temperature, etc., to achieve ingenious optimization of unit design, reduce throttling loss, and improve system efficiency. Effect of Thermal Coefficient

Active Publication Date: 2017-08-04
ZHONGYUAN ENGINEERING COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a three-pressure high-efficiency air-cooled heat pump water heater suitable for high and low temperature environments, to solve the problem of existing air source heat pump water heaters in high temperature and low temperature conditions. Under normal heating conditions, the compression ratio of the compressor is too large, the exhaust temperature is too high, the suction pressure is too high or too low, the heating capacity of the system and the energy efficiency ratio drop sharply, etc.

Method used

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  • Three-pressure efficient air cooled heat pump water heater suitable for high and low temperature environment
  • Three-pressure efficient air cooled heat pump water heater suitable for high and low temperature environment
  • Three-pressure efficient air cooled heat pump water heater suitable for high and low temperature environment

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Embodiment 1

[0027] Such as figure 1 As shown, the present invention provides a three-pressure high-efficiency air-cooled heat pump water heater suitable for high and low temperature environments. The water heater includes a main circuit compressor 1, a main circuit oil separator 2, a main circuit check valve 3, and a water-cooled condenser 4. Subcooler 5, dry filter 6, observation mirror 7, first expansion valve 8, medium pressure gas-liquid separator 9, second expansion valve 10, air-cooled evaporator 11, outdoor fan 12, low-pressure gas-liquid separation Device 13, evaporation pressure regulator 14, auxiliary circuit compressor 15, auxiliary circuit oil separator 16, auxiliary circuit check valve 17, circulating water pump 18 and connecting pipes. The specific connection relationship is as follows: the exhaust port of the main road compressor 1 passes through the main road oil separator 2 and the main road check valve 3 respectively to the inlet of the water-cooled condenser 4 and the o...

Embodiment 2

[0030] The main circuit compressor 1 and the auxiliary circuit compressor 15 described in the present invention are fixed-frequency rolling rotor compressors. The water-cooled condenser 4 is a sleeve condenser. The air-cooled evaporator 11 is a laminated heat exchanger. The outdoor fan 12 is a fixed frequency fan. The first expansion valve 8 and the second expansion valve 10 are choke expansion valves. The evaporating pressure regulator 14 is a proportional-integral regulator. The subcooler 5 is a casing heat exchanger. Other structures are the same as in Embodiment 1.

Embodiment 3

[0032] The main circuit compressor 1 and the auxiliary circuit compressor 15 described in the present invention are variable frequency scroll compressors. The water-cooled condenser 4 is a plate condenser. The air-cooled evaporator 11 is a parallel flow heat exchanger. The outdoor fan 12 is an adjustable fan. The first expansion valve 8 and the second expansion valve 10 are float type expansion valves. The evaporating pressure regulator 14 is a proportional differential regulator. The recooler 5 is a flasher. Other structures are the same as in Embodiment 1.

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Abstract

The invention provides a three-pressure efficient air cooled heat pump water heater suitable for the high and low temperature environment. According to the three-pressure efficient air cooled heat pump water heater, two expansion valves, an aftercooler and a medium pressure gas-liquid separator are ingeniously matched and combined, a side road compressor and an evaporating pressure regulator are used for auxiliary optimizing regulation, and therefore the prominent problem that during high temperature heating in summer, the evaporating temperature and the air suction pressure are too high, too large motor loads are prone to being caused, and a motor can be burnt is solved, the prominent problem that in a low temperature heating working mode in winter, the evaporating temperature is too low, evaporator surface frosting is serious, the compression ratio of a compressor is too large, the exhaust gas temperature is too high, the heating capacity and the energy efficiency ratio are sharply reduced is solved, and the application field of the air cooled heat pump water heater is expanded.

Description

technical field [0001] The invention relates to the technical field of air-conditioning heat pumps, in particular to a triple-pressure high-efficiency air-cooled heat pump water heater suitable for high and low temperature environments. Background technique [0002] Facing the increasingly prominent problems of energy shortage and environmental pollution, coal-fired boilers have been gradually replaced. The development of energy-efficient, comfortable, safe and reliable heat pump water heaters has become the key to the sustainable and rapid development of the heat pump industry. The conventional air source heat pump water heater uses air as the cold and heat source. It has a simple structure, is easy to install and use, and can make full use of the energy in the air. It is an efficient and energy-saving water heater. However, when the outdoor temperature is too high in summer, the evaporation temperature of the air source heat pump device is high, and the suction pressure an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H4/02F25B41/00F25B41/42
CPCF24H4/02F25B2500/31F25B2500/29F25B41/40
Inventor 白静崔四齐王聪民董岁具孙伟丽张磊磊李随波张双林王艳芳
Owner ZHONGYUAN ENGINEERING COLLEGE
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