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Heat pump air conditioner system and its steam jet control device and method

A heat pump air conditioner and control device technology, applied in heat pumps, refrigeration and liquefaction, refrigerators, etc., can solve the problem of heating capacity attenuation, energy saving, environmental protection, and safety that cannot meet the requirements of social development, and air source heat pump air conditioners cannot meet heating demand and other issues to achieve the effect of increasing the heating capacity and improving the energy efficiency ratio

Active Publication Date: 2006-09-06
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the ordinary air source heat pump air conditioners sold in the market have serious attenuation of heating capacity under the low temperature outdoor conditions, and even cannot start and run normally. Therefore, in the cold regions of northern my country, air source heat pump air conditioners can only be used in transitional seasons. Once entering the cold winter, the air source heat pump air conditioner can hardly meet the basic heating demand
As we all know, the traditional central heating methods in northern my country mainly use coal and gas, but these heating methods cannot meet the requirements of social development in terms of energy saving, environmental protection, and safety.

Method used

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  • Heat pump air conditioner system and its steam jet control device and method
  • Heat pump air conditioner system and its steam jet control device and method
  • Heat pump air conditioner system and its steam jet control device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] see figure 1 , figure 1 The part inside the middle dotted line box represents the heat pump air-conditioning system, and the solid line with arrows in the figure represents the flow direction of the refrigerant when the heat pump air-conditioning system is heating. A heat pump air conditioning system, including a compressor 11, a gas-liquid separator 12, a four-way valve 13, an indoor unit heat exchanger 19, an outdoor unit heat exchanger 14, an auxiliary cooling coil 16, a liquid reservoir 17, and a main throttle The device 15A, the auxiliary throttling device 15, and the parts are connected together by copper tubes to form a cooling and heating cycle. Wherein, the compressor 11 includes an air outlet 113 and two air inlets, a first air inlet 111 and a second air inlet 112 . The compressor 11 is a digital scroll compressor with air injection and enthalpy increase, and the main throttling device 15A is an electronic expansion valve.

[0038] The system also includes ...

Embodiment 2

[0050] The difference between this embodiment and Embodiment 1 is that the sensor used in the steam injection control device in this embodiment is a temperature sensor, and the working principle of the steam injection control device using a temperature sensor is: The temperature sensor at the gas port detects the temperature of the gas entering and exiting the compressor, and controls the opening of the electronic expansion valve connected to the second suction port according to the temperature change of the gas entering and exiting the compressor, thereby controlling the injection amount of steam. Specifically include the following processes:

[0051] (1) The temperature sensor respectively detects the temperature of the gas at the first suction port, the second suction port and the gas outlet of the compressor, corresponding to T 低 , T 喷 , T 高 ;

[0052] (2) According to the relationship between pressure and temperature, T 低 , T 喷 , T 高 The corresponding pressure is P ...

Embodiment 3

[0058] Such as image 3 As shown, the difference between the present embodiment and the first embodiment is that the auxiliary cooling coil 16 and the liquid reservoir 17 are not provided in the system of the present embodiment, and there is no coil 18 on the bypass pipe. In addition, the bypass pipe may be directly led out from the outlet of the heat exchanger of the indoor unit.

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Abstract

The invention relates to a heat pump air conditioner with better heating effect in low-temperature, which comprises a compressor, a four-way valve, indoor and outdoor heat exchangers, and main throat device, which are connected via tubes. Wherein, said compressor has a outlet and two inlets; a bypass tube is arranged at the front and back of main throat device to connect the second inlet of compressor. The invention comprises a steam ejection controller, which at least includes three sensors and one electric expansion valve, while the sensors are at the outlet and two inlets of compressor, and the electric expansion valve is on the by-pass tube. The invention detects the ejector pressure of compressor to control the ejected amount of refrigeration accurately, improve the heating effect and energy / efficiency ratio in lower temperature. it can accurately control the open degree of electric expansion valve, to reduce the vibration of indoor temperature.

Description

technical field [0001] The invention relates to the field of air source heat pump air conditioners, in particular to a heat pump air conditioner system with good heating effect under outdoor ultra-low temperature conditions. Background technique [0002] At present, the ordinary air source heat pump air conditioners sold in the market have serious attenuation of heating capacity under the low temperature outdoor conditions, and even fail to start and run normally. Therefore, in the cold regions of northern my country, air source heat pump air conditioners can only be used in transitional seasons. Once entering the cold winter, the air source heat pump air conditioner can hardly meet the basic heating demand. As we all know, the traditional central heating methods in northern my country mainly use coal and gas, but these heating methods cannot meet the requirements of social development in terms of energy saving, environmental protection, and safety. Therefore, it is necessar...

Claims

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Application Information

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IPC IPC(8): F25B30/02F25B49/02
CPCF25B2400/13F25B2313/023F25B49/022F25B13/00F25B2700/21151F25B2700/21152F25B2500/19F25B2700/1933F25B2600/0272F25B2500/31F25B2700/1931F25B2313/02741F25B1/10
Inventor 苏玉海刘桂平孙常权
Owner GREE ELECTRIC APPLIANCES INC
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