Mutual defrosting method for air source heat pump water heater and five-cycle dual heat source heat pump water heater

An air source heat pump, defrost cycle technology, used in fluid heaters, fluid circulation arrangements, refrigeration and liquefaction

Active Publication Date: 2011-12-28
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

However, at present, there is no dual heat source heat pump water heater that can simultaneously absorb heat from two heat sources and make hot water in addition to using the wind source and water source to make hot water.

Method used

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  • Mutual defrosting method for air source heat pump water heater and five-cycle dual heat source heat pump water heater
  • Mutual defrosting method for air source heat pump water heater and five-cycle dual heat source heat pump water heater
  • Mutual defrosting method for air source heat pump water heater and five-cycle dual heat source heat pump water heater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The structural relation and working principle of embodiment 1 are by figure 1 illustrate.

[0058] Such as figure 1 As shown, a single air source heat pump water heater with hot gas bypass and mutual aid defrosting in Embodiment 1 of the present invention includes two independent refrigerant circuit systems, system a and system b, and the accessories of the two systems are all marked with footnote a and b represent; a unified hot water heat exchange system, a unified signal acquisition and circuit control system; take system a as an example to illustrate the composition and connection of the refrigerant circuit system: system a consists of compressor 1a, hot water The refrigerant passage of the heat exchanger 2a, the filter Ga, the accumulator 3a, the restrictor Ja, the air source evaporator 5a, the gas-liquid separator 7a, and the compressor 1a are sequentially connected in series to form a refrigerant circulation circuit. There is also a defrosting bypass pipeline c...

Embodiment 2

[0062] The structural relation and working principle of embodiment 2 are by figure 2 illustrate.

[0063] Such as figure 2 As shown, a single air source heat pump water heater with reverse cycle mutual aid defrosting in Embodiment 2 of the present invention includes two independent refrigerant circuit systems, system a and system b, and the accessories of the two systems are denoted by footnotes a and b means; a unified hot water heat exchange system, unified signal acquisition and circuit control system; taking system a as an example, explain the composition and connection mode of the refrigerant circuit system: it also includes a four-way valve 4a; record , the single interface on one side of the main valve body of the four-way valve is the first interface ① of the four-way valve, and the three interfaces on the other side of the main valve body of the four-way valve are agreed to be connected to the first interface when the coil of the four-way valve is de-energized. Th...

Embodiment 3

[0066] The structural relation and working principle of embodiment 3 are by image 3 illustrate.

[0067] image 3 Shown is Embodiment 3 of the present invention, a composition and working principle diagram of a three-cycle dual-heat source heat pump water heater with hot gas bypass and mutual aid defrosting; there are two independent three-cycle refrigerant circuit systems a system and b system, A unified hot water heat exchange system, water source heat exchange system, signal acquisition and circuit control system;

[0068] Embodiment 3 is a three-circulation dual heat source heat pump water heater with dual systems including system a and system b. Each refrigerant circuit system also includes a water source evaporator, a defrosting valve, a four-way valve, and the water inlet pipeline of the water source evaporator. Equipped with a water source feed water pump 9; its connection mode is (taking a system as an example): the inlet of the compressor 1a is connected to the ga...

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Abstract

The invention discloses a mutual defrosting method for an air source heat pump water heater and a technical scheme of a five-cycle double-heat-source heat pump water heater. The mutual defrosting method is characterized in that: a unit is provided with at least two refrigerant loop systems; hot water heat exchangers of all systems are partitioned into two groups; water paths of the two groups are connected in series; a hot water inner cycle uniform hot water heat exchange system connected with a circulating water pump and the like is arranged between a water outlet interface and a water inlet interface; each system is defrosted in sequence in batches; and defrosted and normal cycle systems exchange heat through the uniform hot water heat exchange system, and are defrosted mutually. The five-cycle double-heat-source heat pump water heater comprises a compressor, a hot water heat exchanger, a water source, water source and wind source evaporators, a throttling device and the like, and is characterized by further comprising two four-way valves and a defrosting valve, wherein the water source and wind source evaporators are connected between the outlet of the throttling device and the air suction port of the compressor by using a double-four-way-valve switching mechanism; the defrosting valve is connected between the refrigerant outlet of the hot water heat exchanger and the inlet of the wind source evaporator; and the five cycles include a wind source cycle, a water source cycle, serial wind source and water source cycle, a serial water source and wind source cycle and a defrosting cycle.

Description

Technical field: [0001] The invention relates to the technical field of heat pump water heaters. Background technique: [0002] Heat pump water heaters use compression refrigeration cycles to absorb low-grade heat energy from air or water while consuming a small amount of high-grade electric energy to obtain hot water that is close to the sum of the consumed electric energy and the heat absorbed from air or water. The energy efficiency ratio is usually between 2.5 to 4 range. Therefore, research and development of heat pumps with high efficiency and stable performance is a hot spot in the current era of low-carbon economy. The heat pump that absorbs heat energy in the air is the most convenient to use, so it has a large production volume and is widely used. However, when the air source heat pump is used in humid weather where the temperature is close to zero in winter, it is easy to frost, the defrosting is not complete, and the efficiency is low. Due to the direct heatin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B47/02F25B41/04F25B41/06F24H4/02
Inventor 陈则韶
Owner 江苏恒信诺金科技股份有限公司
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