CN205026783U - Heatflash type radiator heat supply air source heat pump system - Google Patents

Abstract

The utility model relates to an air-source heat pump system, in particular to an air-source heat pump system for heating by a strong heat radiator, belonging to the technical field of air-source heat pumps. It includes a main circuit and a secondary circuit. The first outlet of the air-enhancing compressor is connected to the first inlet of the four-way reversing valve, and the first outlet of the four-way reversing valve is connected to the first inlet of the indoor heat exchanger. The first outlet of the heater is connected to the first inlet of the liquid storage, and the first outlet of the liquid storage is connected to the first inlet of the economizer. The utility model not only increases the circulating flow rate of the refrigeration system in the low-temperature environment of the air-source heat pump through the joint control of the electronic expansion valve, the liquid injection solenoid valve and the capillary in the secondary circuit, but also suppresses the attenuation rate of the heating capacity of the air-source heat pump in the low-temperature environment, and It can improve the ability to produce high-temperature hot water, so as to achieve the purpose of hot water temperature required for radiator heating.

Description

A strong heat radiator heating air source heat pump system

technical field

The utility model relates to an air source heat pump system, in particular to an air source heat pump system for heating by a strong heat radiator, which belongs to the technical field of air source heat pumps.

Background technique

At present, many areas in northern China still use boilers for heating. The pollutants emitted by boilers burning coal at low altitudes are one of the important killers of smog and PM2.5 in northern areas. Therefore, to thoroughly control the smog in the north, eliminating small coal-fired boilers is the fundamental way out. But winter in the north cannot be without heating. Encouraging and supporting the development of new energy, energy-saving and environmental protection industries such as the air source heat pump industry, and finding green and environmentally friendly heating equipment that can replace small coal-fired boilers is a practical need for sustainable development in the north.

However, on the one hand, when air source heat pumps are extended to cold areas such as the Yellow River Basin, North China, and Northwest China (the heating design temperature range is -5 to -20°C), they encounter problems such as serious attenuation of heating capacity and low energy efficiency ratio at low ambient temperatures. Doesn't work properly in winter. On the other hand, when the air source heat pump produces high temperature hot water, the discharge temperature of the compressor will increase accordingly. Up to the standard, seriously affecting the heating effect.

Contents of the invention

The purpose of this utility model is to overcome the above disadvantages, thereby providing a strong heating type air source heat pump system for radiator heating, which can not only suppress the attenuation rate of heating heat of the air source heat pump in low temperature environment, but also provide heat radiation that satisfies the requirements of radiator heat dissipation. High temperature hot water required.

According to the technical solution provided by the utility model, an air-source heat pump system with strong heat radiator heating includes a main circuit and a secondary circuit. Liquid receiver, thermal expansion valve, outdoor heat exchanger and gas-liquid separator; the secondary circuit includes economizer, electronic expansion valve, liquid injection solenoid valve and capillary tube, which is characterized in that: the first outlet of the air-supplementing and enthalpy-enhancing compressor is connected to four The first inlet of the reversing valve, the first outlet of the four-way reversing valve is connected to the first inlet of the indoor heat exchanger, the first outlet of the indoor heat exchanger is connected to the first inlet of the liquid reservoir, and the first outlet of the liquid reservoir an outlet connected to the first inlet of the economizer;

The first outlet of the economizer is connected to the first inlet of the electronic expansion valve through the first branch, the first outlet of the electronic expansion valve is connected to the first inlet of the outdoor heat exchanger, and the first outlet of the outdoor heat exchanger is connected to the four-way reversing valve. The second inlet of the valve, the second outlet of the four-way reversing valve are connected to the first inlet of the gas-liquid separator, and the first outlet of the gas-liquid separator is connected to the first inlet of the gas-supplementing and enthalpy-enhancing compressor;

The first outlet of the economizer is connected to the first inlet of the thermal expansion valve through the second branch, the first outlet of the thermal expansion valve is connected to the second inlet of the economizer, and the second outlet of the economizer is connected to the supplementary gas enthalpy increasing compressor. mouth;

The first outlet of the economizer is connected to the first inlet of the liquid injection solenoid valve through the third branch, the first outlet of the liquid injection solenoid valve is connected to the first inlet of the capillary tube, and the first outlet of the capillary tube is connected to the air supply port of the air supply and enthalpy increasing compressor .

Further, a one-way valve connected in parallel with the electronic expansion valve is provided beside the electronic expansion valve.

Compared with the prior art, the utility model has the following advantages:

The utility model is simple, compact and reasonable in structure. The utility model not only increases the circulating flow rate of the refrigeration system in the low temperature environment of the air source heat pump, but also restrains the air source heat pump The attenuation rate of heating heat in a low-temperature environment can improve the ability to produce high-temperature hot water, thereby achieving the purpose of the hot water temperature required for heating by the radiator.

Description of drawings

Fig. 1 is a front view of the utility model.

Explanation of reference signs: 1-compressor for supplementing air and increasing enthalpy, 2-four-way reversing valve, 3-indoor heat exchanger, 4-liquid receiver, 5-economizer, 6-thermal expansion valve, 7-electronic expansion Valve, 8-one-way valve, 9-outdoor heat exchanger, 10-gas-liquid separator, 11-spray solenoid valve, 12-capillary.

detailed description

Below the utility model will be further described in conjunction with the embodiment in the accompanying drawing:

As shown in Figure 1, the utility model mainly includes a main circuit and a secondary circuit, and the main circuit includes a gas supplementary enthalpy increasing compressor 1, a four-way reversing valve 2, an indoor heat exchanger 3, a liquid storage device 4, and a thermal expansion valve 6 , Outdoor heat exchanger 9 and gas-liquid separator 10. The secondary loop includes an economizer 5 , an electronic expansion valve 7 , a liquid injection solenoid valve 11 and a capillary 12 .

The first outlet of the air supplement enthalpy increasing compressor 1 is connected to the first inlet of the four-way reversing valve 2, and the first outlet of the four-way reversing valve 2 is connected to the first inlet of the indoor heat exchanger 3, and the first inlet of the indoor heat exchanger 3 The first outlet is connected to the first inlet of the accumulator 4 , and the first outlet of the accumulator 4 is connected to the first inlet of the economizer 5 .

The first outlet of the economizer 5 is connected to the first inlet of the electronic expansion valve 7 through the first branch, the first outlet of the electronic expansion valve 7 is connected to the first inlet of the outdoor heat exchanger 9, and the first outlet of the outdoor heat exchanger 9 Connect the second inlet of the four-way reversing valve 2, the second outlet of the four-way reversing valve 2 is connected to the first inlet of the gas-liquid separator 10, and the first outlet of the gas-liquid separator 10 is connected to the compressor 1 for supplementing air and increasing enthalpy the first entrance. A check valve 8 connected in parallel with the electronic expansion valve 7 is arranged beside the electronic expansion valve 7 .

The first outlet of the economizer 5 is connected to the first inlet of the thermal expansion valve 6 through the second branch, the first outlet of the thermal expansion valve 6 is connected to the second inlet of the economizer 5, and the second outlet of the economizer 5 is connected to the supplementary gas booster. Air supply port of enthalpy compressor 1.

The first outlet of the economizer 5 is connected to the first inlet of the liquid injection solenoid valve 11 through the third branch, the first outlet of the liquid injection solenoid valve 11 is connected to the first inlet of the capillary 12, and the first outlet of the capillary 12 is connected to the supplementary air enthalpy increase Air supply port of compressor 1.

The utility model not only increases the circulating flow rate of the refrigeration system in the low-temperature environment of the air-source heat pump through the joint control of the electronic expansion valve, the liquid injection solenoid valve and the capillary in the secondary circuit, but also suppresses the attenuation rate of the heating capacity of the air-source heat pump in the low-temperature environment, and It can improve the ability to produce high-temperature hot water, so as to achieve the purpose of hot water temperature required for radiator heating.

The working principle of the utility model is: in the heating mode, the high-temperature and high-pressure refrigerant flows from the gas-supplementing enthalpy-enhancing compressor through the four-way reversing valve, cools in the indoor heat exchanger, flows into the liquid storage device, and then flows through the economical device shunt. The refrigerant flowing out of the economizer is divided into three branches. The first branch is connected to the inlet of the thermal expansion valve, and the second branch is throttled by the electronic expansion valve to cause a temperature difference between the refrigerant and the refrigerant flowing into the economizer. After heat exchange, it enters the air-enhancing compressor through the intermediate air supply port of the air-increasing compressor; the intermediate air supply can not only increase the circulation flow of the entire refrigeration system, but also directly reduce the air-increasing enthalpy compressor through the air supply. The exhaust temperature of the air source heat pump ensures that the air source heat pump can operate efficiently, stably and reliably in cold environments; the solenoid valve on the third branch judges whether it needs to be opened according to the exhaust temperature of the air supplement enthalpy increasing compressor. When the value is higher than the upper limit of the set value, the solenoid valve opens, and the refrigerant quickly enters the air supply port in the middle of the air supply and enthalpy increase compressor through the capillary connected to it, effectively avoiding the failure of the heat pump system caused by the exhaust temperature being too high. When the lower limit of the set value is reached, the solenoid valve is closed.

Claims (2)

1. a heat-flash type radiator heating air source heat pump system, comprise major loop and subloop, major loop comprises tonifying Qi and increases enthalpy compressor (1), four-way change-over valve (2), indoor heat exchanger (3), reservoir (4), heating power expansion valve (6), outdoor heat exchanger (9) and gas-liquid separator (10); Subloop comprises economizer (5), electric expansion valve (7), hydrojet magnetic valve (11) and capillary (12), it is characterized in that: tonifying Qi increases the first entrance of the first outlet connection four-way change-over valve (2) of enthalpy compressor (1), first outlet of four-way change-over valve (2) connects the first entrance of indoor heat exchanger (3), first outlet of indoor heat exchanger (3) connects the first entrance of reservoir (4), and the first outlet of reservoir (4) connects the first entrance of economizer (5);

First outlet of economizer (5) connects the first entrance of electric expansion valve (7) by the first branch road, first entrance of the first outlet junction chamber external heat exchanger (9) of electric expansion valve (7), first outlet of outdoor heat exchanger (9) connects the second entrance of four-way change-over valve (2), second outlet of four-way change-over valve (2) connects the first entrance of gas-liquid separator (10), and the first outlet of gas-liquid separator (10) connects the first entrance that tonifying Qi increases enthalpy compressor (1);

First outlet of economizer (5) connects the first entrance of heating power expansion valve (6) by the second branch road, first outlet of heating power expansion valve (6) connects the second entrance of economizer (5), and the second outlet of economizer (5) connects the gas supplementing opening that tonifying Qi increases enthalpy compressor (1);

First outlet of economizer (5) connects hydrojet magnetic valve (11) first entrance by the 3rd branch road, first outlet of hydrojet magnetic valve (11) connects the first entrance of capillary (12), and the first outlet of capillary (12) connects the gas supplementing opening that tonifying Qi increases enthalpy compressor (1).

2. a kind of heat-flash type radiator heating air source heat pump system as claimed in claim 1, is characterized in that: described electric expansion valve (7) is other is provided with the check valve (8) be connected in parallel with electric expansion valve (7).