Heat pump hot water machine set of water-containing internal circulation heat-exchanging loop

A heat pump hot water and internal circulation technology, which is used in refrigeration air conditioners, heat pump water heaters and energy-saving fields, can solve problems such as difficulty in reaching water temperature above 55°C, high refrigerant pressure, and inability to quickly produce hot water.

Active Publication Date: 2007-11-28
江苏恒信诺金科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to overcome the unstable performance of the hot water heat exchanger of the existing heat pump water heater, the hot water cannot be produced quickly, the temperature of the water outlet is difficult to reach above 55°C or it is difficult to maintain it stably, the pressure of the refrigerant in summer is too high and the defrosting in winter is not complete, etc., and Recycling waste heat and solar energy combination technology is not perfect, the present invention proposes a heat pump water heater unit with water circulation heat exchange circuit, which can overcome the above shortcomings, and can also increase the cooling function in summer and improve the energy-saving efficiency of equipment

Method used

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  • Heat pump hot water machine set of water-containing internal circulation heat-exchanging loop
  • Heat pump hot water machine set of water-containing internal circulation heat-exchanging loop
  • Heat pump hot water machine set of water-containing internal circulation heat-exchanging loop

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Effect test

Embodiment 1

[0048] Embodiment 1, Fig. 1 is embodiment 1 of the heat pump hot water unit with water internal circulation heat exchange circuit of the present invention, a single air heat source, reverse defrosting, expansion valve throttle and forced water internal circulation heat exchange Schematic diagram of the unit composition of the circuit.

[0049] The components in the refrigerant circuit of the unit and their connection sequence, that is, the refrigerant cycle sequence when the heat pump heats water is: the exhaust port of the compressor, the four-way valve 2, the water-refrigerant heat exchanger 8, and the liquid storage tank 17, dry filter 18, sight glass 19, solenoid valve 30, expansion valve J, outdoor air-cooled heat exchanger 3, four-way valve 2, gas-liquid separator 7, air inlet of compressor; outdoor air-cooled heat exchanger Heater 3 has fan 4 and is equipped with temperature sensor 21; reverse defrosting one-way valve P 1 The inlet of the expansion valve J is connected...

Embodiment 2

[0051] Embodiment 2, Fig. 2 is embodiment 2 of the heat pump hot water unit with water internal circulation heat exchange circuit of the present invention, a single air heat source, reverse defrosting, capillary restrictor and self-circulating water internal circulation exchange Schematic diagram of the unit composition of the thermal circuit.

[0052] The difference between Embodiment 2 and Embodiment 1 in the refrigerant circuit is that only a capillary restrictor is connected between the refrigerant outlet 16 of the water-refrigerant heat exchanger 8 and the liquid flow interface of the outdoor air-cooled heat exchanger 3 J;

[0053] The water-refrigerant heat exchange system H of Embodiment 2 is a natural circulation type, see the dotted line box H, and the outside is wrapped with a thermal insulation shell hot water storage tank 9, a flow guide sleeve 10 for separating the heating channel and the return channel, The spiral-shaped heat exchange tube type water-refrigerant...

Embodiment 3

[0054] Embodiment 3, Fig. 3 is embodiment 3 of the heat pump hot water unit with water internal circulation heat exchange circuit of the present invention, one can use water heat source and air heat source respectively, and has four functional circulation circuits and forced water internal circulation heat exchange The circuit unit, referred to as the composition principle diagram of the third dual-source multi-channel system.

[0055] As shown in Figure 3, the refrigerant circuit system of the third dual-source multi-channel system includes a compressor 1, a gas path three-way valve D, a four-way valve 2, an outdoor air-cooled heat exchanger 3, and a cold water heat exchanger 5 , water-refrigerant heat exchanger 8, throttle J, defrosting solenoid valve 24; the cycle switching mechanism of the system is composed of four-way valve 2 and gas path three-way valve D, and throttle J is composed of the first and second , three one-way valve P 1 ,P 2 ,P 3 and the first and second ...

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Abstract

The invention relates to a heat pump hot water unit with in-water cycling heat exchanging loop, comprising refrigerant loop system, water-refrigerant heat exchanging system, signal collection and circuit control system. It is characterized in that the water-refrigerant heat exchanging system adopts forced internal-cycling loop constituted by water-refrigerant heat exchanger, reflux tube and internal-cycling pump or natural internal-cycling loop which uses diversion sleeve to separate spiral heat exchanger in heat storing water tank and water pre-heating device can be collocated; the refrigerant loop system has single cycling of single air heat source, independent cycling of double heat source with four functions and adopts the structure of three-way electromagnetic valve with pneumatic valve, four-way valve and multiple-path restrictor so as to make switch of all cycles convenient; wind-cold heat exchanger also has water fin tube. The unit efficiency of invention is high and defrosting in winter is complete. Pressure can not be overloaded in summer. Hot water in 55deg.C can be supplied quickly and continuously. Waste heat can be reclaimed or solar hot water can be made use of. It can save energy by 70-85% compared with electric water heater in annual average. The independent cycling unit with double heat source has refrigeration, heating, heating water and heating water with refrigeration functions.

Description

technical field [0001] The invention relates to the technical fields of refrigeration air conditioners, heat pump water heaters and energy saving. Background technique [0002] Heat pump air conditioners and heat pump water heaters use air or water as a heat source, and produce hot air or hot water by compressing refrigerant, which has an obvious saving effect. The current heat pump water heating device is a single heat source heat pump with air or water as the heat source. The dual heat source heat pump water heating device involves complex cycle switching technology, high efficiency, compact, stable and cheap technology of hot water heat exchanger and winter heat pump defrosting technology. [0003] The hot water heat exchanger is the key equipment of the heat pump water heater. The flow mode of the water in the heat exchanger has a great influence on the performance of the hot water heat exchanger, which in turn affects the efficiency and safe operation of the unit. Ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B29/00F25B30/02
Inventor 陈则韶
Owner 江苏恒信诺金科技股份有限公司
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