CN102331112A

CN102331112A - Heat pump working condition system

Info

Publication number: CN102331112A
Application number: CN201110279700A
Authority: CN
Inventors: 王正鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-09-20
Filing date: 2011-09-20
Publication date: 2012-01-25
Anticipated expiration: 2031-09-20
Also published as: CN102331112B

Abstract

The invention provides a heat pump working condition system which is characterized in that a heat exchanger (1), a check valve (2), an electromagnetic conversion valve (3), a cooler (13), a check valve (4), an expansion valve (5), a dehumidifier (6), a liquid storage tank (7), a compressor (8), a check valve (9) and an electromagnetic change valve (10) are connected together in sequence by connecting pipes to form a first loop, the electromagnetic conversion valve (3), the cooler (13), the check valve (4), a check valve (11) and a winter heater (12) are connected to form a second loop, and the winter heater (12) is connected with one end of the liquid storage tank (7); and the electromagnetic change valve (10), the heat exchanger (1) and the check valve (2) can form a third loop. The heat pump working condition system has two working conditions, namely a summer working condition and a winter working condition, and the efficiency of the heat pump can be improved in winter, thus the conversion of the compressor from high temperature high pressure to low temperature low pressure can be perfected.

Description

Heat pump operating mode system

Technical field

The present invention is specifically related to a kind of heat pump operating mode system, particularly a kind of have winter and summer two kinds of operating modes heat pump operating mode system.

Background technology

Existing heat pump is a kind of heating technique that air-conditioning develops and comes, under a certain temperature, absorbs heat, and heat radiation under higher temperature.Thermal source difference according to heat pump can be divided into air source heat pump, water resource heat pump, earth source heat pump.And the pumped (conveying) medium of heating and refrigeration empty G&W commonly used.

Air source heat pump is long service time, and system is simple, and is easy to install and use, energy-saving and environmental protection, safety.Use more extensive.Existing air source heat pump system is as shown in fig. 1; Successively four-way change-over valve 20, heat exchanger 30, check valve 40, expansion valve 50, condenser 60, fluid reservoir 70, compressor 80 are joined together to form a loop through tube connector; Heat exchanger 30 is directly to the expansion valve throttling after dried heat exchanger and the hydrothermal exchange.Refrigerant temperature in the heat exchanger is along with the heating of water tank temperature raises, and refrigerant temperature is also raising simultaneously, and when the water tank water temperature was lower than below 40 °, heat pump was in nominal situation.When the water tank water temperature is higher than more than 40 °, just and the standard condition of about 35 ° in air-conditioning be not inconsistent, heat pump just can not normal operation; Caused the minimizing of expansion valve amount of restriction, just the many liquid of gas are few, and the coolant quantity that returns compressor also reduces simultaneously; Cause the deficiency of compressor air suction amount; Compressor is unloaded, and load strengthens, and has caused the imbalance of higher-pressure region operating mode.The protection of compressor has caused the loss of electric energy.Because the hypertonia between heat exchanger 30 and the expansion valve 50, compressor was not with regard to overload protection when water temperature did not also reach 65 °.To winter, because external temperature is lower than when subzero, the delivery temperature of compressor also descends and contrast during 35 ° of summer high temperatures simultaneously, and the delivery temperature of compressor has only about 45-85 °, and at this moment water tank temperature can added again.

Summary of the invention

The present invention provides a kind of heat pump operating mode system; Purpose is to solve the prior art problem; Provide a kind of have summer and winter two kinds of operating modes, and the efficient of heat pump can be improved in the winter time the time, the heat pump operating mode system that perfect compressor is changed from the HTHP to the low-temp low-pressure.

The present invention's technical scheme that adopts of dealing with problems is:

Heat pump operating mode system; Successively heat exchanger 1, check valve 2, electromagnetic steering valve 3, cooler 13, check valve 4, expansion valve 5, dehumidifier 6, fluid reservoir 7, compressor 8, check valve 9, solenoid directional control valve 10 are joined together to form first loop through tube connector; Solenoid directional control valve 3, cooler 13, check valve 4, check valve 11, winter, heater 12 was joined together to form second loop, and wherein winter, heater 12 was connected with fluid reservoir 7 one ends; Solenoid directional control valve 10, heat exchanger 1 and check valve 2 form the 3rd loop.

Beneficial effect of the present invention: between the heat exchanger of mesohigh and expansion valve, increasing a cooler in this heat pump; Can be cooled to the mesolow throttling to the high pressure refrigerant in the heat exchanger through cooler; Solved in the prior art owing to there is not the cooling of cooler; The heat exchanger internal pressure is too high, the problem of compressor high voltage protective, the perfect conversion of compressor from the HTHP to the low-temp low-pressure.And in the native system winter heater in the winter time the time the waste heat in the heat exchanger through the heating of heater supply compressor, improved the delivery temperature of compressor in winter, strengthened the efficient of heat pump.

Description of drawings

Fig. 1 is the prior art constructions sketch map;

Fig. 2 is a structural representation of the present invention.

Among the figure: 20. four-way change-over valves, 30. heat exchangers, 40. check valves, 50. expansion valves, 60. condensers, 70. fluid reservoirs, 80. compressors.

Heat exchanger, 2. check valve, 3. the electromagnetic steering valve, 4. check valve, 5. expansion valve, 6. dehumidifier, 7. fluid reservoir, 8. compressor, 9. check valve, 10. solenoid directional control valve, 11. check valves, 12 winter heater, 13. coolers.

The specific embodiment

Below in conjunction with accompanying drawing and specific embodiment the present invention is further specified.

Heat pump operating mode system as shown in Figure 2; Successively heat exchanger 1, check valve 2, electromagnetic steering valve 3, cooler 13, check valve 4, expansion valve 5, dehumidifier 6, fluid reservoir 7, compressor 8, check valve 9, solenoid directional control valve 10 are joined together to form first loop through tube connector; Solenoid directional control valve 3, cooler 13, check valve 4, check valve 11, winter, heater 12 was joined together to form second loop, and wherein winter, heater 12 was connected with fluid reservoir 7 one ends; Solenoid directional control valve 10, heat exchanger 1 and check valve 2 form the 3rd loop.

Operating mode of the present invention has increased a cooler 13 exactly between heat exchanger 1 and expansion valve 5, be cooled to mesolow to the high pressure refrigerant in the heat exchanger 1 through cooler 13, and to expansion valve 5 throttlings, cooler 13 has played the balanced action of high-low pressure.Solved in the prior art owing to there is not the cooling of cooler 13, the heat exchanger internal pressure is too high, causes the problem of compressor high voltage protective, the perfect conversion of compressor from the HTHP to the low-temp low-pressure.Therefore, when the delivery temperature of compressor 8 was in 80-120 ° of scope, compressor 8 can both normal operation.

Winter of the present invention, heater 12, be the heat energy that is taken to air by refrigerant in the heat exchanger 1 through the heater 12 anti-compressors 8 of giving in winter, improve the delivery temperature of compressor 8, improve the Energy Efficiency Ratio of heat pump in winter, reached energy-conservation effect.

Heat pump operating mode system among the present invention; Adopted summer in winter two different working conditions systems to come work; Solved the contradiction of a shared operating mode job of two seasons of summer in winter in the prior art, remedied, improved the efficient of heat pump because the system condition that the variation of environment temperature causes is not enough.

Claims

1. heat pump operating mode system; It is characterized in that: successively heat exchanger (1), check valve (2), electromagnetic steering valve (3), cooler (13), check valve (4), expansion valve (5), dehumidifier (6), fluid reservoir (7), compressor (8), check valve (9), solenoid directional control valve (10) are joined together to form first loop through tube connector; Solenoid directional control valve (3), cooler (13), check valve (4), check valve (11), heater in winter (12) are joined together to form second loop, and wherein heater in winter (12) is connected with fluid reservoir (7) one ends; Solenoid directional control valve (10), heat exchanger (1) and check valve (2) form the 3rd loop.