CN210663486U - Hot air defrosting device for heat pump unit - Google Patents

Hot air defrosting device for heat pump unit Download PDF

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Publication number
CN210663486U
CN210663486U CN201921696619.5U CN201921696619U CN210663486U CN 210663486 U CN210663486 U CN 210663486U CN 201921696619 U CN201921696619 U CN 201921696619U CN 210663486 U CN210663486 U CN 210663486U
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way valve
heat exchanger
side heat
air
communicated
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CN201921696619.5U
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杜贤平
杭文斌
华青梅
许如亚
余伟
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Kochem Electric Appliance Co Ltd
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Kochem Electric Appliance Co Ltd
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Abstract

The utility model discloses a steam defrosting device for heat pump set relates to heat pump technical field. The utility model forms an air source heat pump circulating system in turn by the air side heat exchanger, the compressor, the four-way valve, the water side heat exchanger, the first three-way valve, the expansion valve, the second three-way valve, the liquid storage tank, the third three-way valve and the fourth three-way valve; a defrosting circulation system is formed among the air side heat exchanger, the compressor, the four-way valve, the tube shell heat exchanger and the fourth three-way valve in sequence; a water side heat exchange circulating system is sequentially formed among the liquid storage tank, the water pump, the four-way valve, the water side heat exchanger, the first three-way valve, the shell and tube heat exchanger and the third three-way valve. The microprocessor controls the air source heat pump circulating system to stop working, and the water side heat exchange circulating system and the defrosting circulating system work to realize that the refrigerant flowing through the air side heat exchanger is defrosted for the air side heat exchanger; the heating efficiency and the heating effect of the air source heat pump system are improved.

Description

Hot air defrosting device for heat pump unit
Technical Field
The utility model belongs to the technical field of the heat pump, especially, relate to a steam defrosting device for heat pump set.
Background
The air source heat pump is an energy-saving device which utilizes high-level energy to enable heat to flow from low-level heat source air to a high-level heat source; the energy-saving air conditioner utilizes the heat in the air to generate hot water and the like for people to use, has obvious energy-saving effect and reduces the living and production cost of people.
In cold winter, the surface of the air side heat exchanger will frost because the temperature of the external environment is lower than that of the surface of the air side heat exchanger, which will bring certain influence to the working and heating efficiency of the air source heat pump; the existing air source heat pump defrosting device generates hot air by additionally adding heating components such as electric heating sheets and the like to defrost an air side heat exchanger, although the effect is remarkable, the energy consumption of the air source heat pump is increased in the past, the energy-saving core of the air source heat pump is violated, and the safety cannot be guaranteed;
therefore, a hot air defrosting device for a heat pump unit needs to be researched to improve the defrosting efficiency of air side heat exchange and improve the heating efficiency of an air source heat pump.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a hot air defrosting device for a heat pump unit, a microprocessor controls the actions of a compressor, a four-way valve, a first three-way valve, a second three-way valve, a third three-way valve, a fourth three-way valve and a water pump through the data detected by a temperature sensor; further stopping the air source heat pump circulating system, and enabling the water side heat exchange circulating system and the defrosting circulating system to work to defrost the air side heat exchanger by the refrigerant flowing through the air side heat exchanger; the problem of current defrosting device have increased air source heat pump's energy consumption and the air supply heat pump heating efficiency that leads to because of frosting reduces is solved.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model relates to a hot gas defrosting device for a heat pump unit, which comprises an air side heat exchanger, a compressor, a water side heat exchanger, an expansion valve and a liquid storage tank; the water side heat exchanger is arranged in the heat preservation water tank;
the air side heat exchanger is communicated with a four-way valve through a compressor, the four-way valve is communicated with an input port of the water side heat exchanger, an output port of the water side heat exchanger is communicated with an expansion valve through a first three-way valve, an output port of the expansion valve is communicated with an input port of the liquid storage tank through a second three-way valve, an output port of the liquid storage tank is communicated with a fourth three-way valve through a third three-way valve, and the fourth three-way valve is communicated with an input port of the air side heat;
an air source heat pump circulating system is sequentially formed among the air side heat exchanger, the compressor, the four-way valve, the water side heat exchanger, the first three-way valve, the expansion valve, the second three-way valve, the liquid storage tank, the third three-way valve and the fourth three-way valve;
the four-way valve is communicated with a first liquid input port of the tube-shell heat exchanger, and a first liquid output port of the tube-shell heat exchanger is communicated with the air-side heat exchanger through a fourth three-way valve;
a defrosting circulation system is formed among the air side heat exchanger, the compressor, the four-way valve, the tube shell heat exchanger and the fourth three-way valve in sequence;
the second three-way valve is communicated with the four-way valve through a water pump; the first three-way valve is communicated with a second liquid input port of the tube-shell heat exchanger, and a second liquid output port of the tube-shell heat exchanger is communicated with a third three-way valve;
and a water side heat exchange circulating system is sequentially formed among the liquid storage tank, the water pump, the four-way valve, the water side heat exchanger, the first three-way valve, the shell and tube heat exchanger and the third three-way valve.
Further, a temperature sensor and a fan are respectively installed in the air side heat exchanger; the temperature sensor, the fan, the compressor, the four-way valve, the first three-way valve, the second three-way valve, the third three-way valve, the fourth three-way valve and the water pump uniform distribution microprocessor are electrically connected.
The utility model discloses following beneficial effect has:
1. the microprocessor of the utility model controls the actions of the compressor, the four-way valve, the first three-way valve, the second three-way valve, the third three-way valve, the fourth three-way valve and the water pump through the data detected by the temperature sensor; further stopping the air source heat pump circulating system, and enabling the water side heat exchange circulating system and the defrosting circulating system to work to defrost the air side heat exchanger by the refrigerant flowing through the air side heat exchanger; in the process, the high-temperature and high-pressure gas refrigerant generated by the defrosting circulation system and the refrigerant heat after the heat exchange of the water side heat exchange circulation system are effectively utilized to defrost the air side heat exchanger, so that the heating efficiency and the heating effect of the air source heat pump system are improved.
2. The utility model discloses in changing the frost circulation system, through will flow through air side heat exchanger and compressor and the high temperature high pressure draught that produces flows through air side heat exchanger again and changes the frost for air side heat exchanger, the effectual characteristic that has utilized the refrigerant to flow through behind the compressor comes to change the frost for air side heat exchanger, has improved the effect of heating of changing frost efficiency and air source heat pump.
3. The utility model discloses in water side heat transfer circulation system, the refrigerant flow direction water side heat exchanger in the liquid storage tank is driven through the water pump, and then make the warm hot water in refrigerant and the holding water box carry out the heat transfer, and the refrigerant after will exchanging heat at last flows through the shell heat exchanger, and carry out the heat transfer with the refrigerant from compressor flow direction shell heat exchanger, improve the refrigerant temperature of flow direction air side heat exchanger, further utilize the heat of warm hot water to realize the defrosting of air side heat exchanger, further improved the defrosting of air source heat pump and heated efficiency.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a system diagram of a hot air defrosting device for a heat pump unit according to the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
the system comprises a 1-air side heat exchanger, a 2-compressor, a 3-water side heat exchanger, a 4-expansion valve, a 5-liquid storage tank, a 6-heat preservation water tank, a 7-four-way valve, an 8-first three-way valve, a 9-second three-way valve, a 10-third three-way valve, an 11-fourth three-way valve, a 12-shell-and-tube heat exchanger and a 13-water pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In cold seasons, after the air source heat pump system stops working, because the outside temperature is lower than the surface temperature of the coil assembly in the air side heat exchanger 1, the coil assembly of the air side heat exchanger 1 has a frosting phenomenon; because the air side heat exchanger 1 is frosted, the heat exchange efficiency between the air side heat exchanger 1 and the outside air is reduced, and the heat of the high-temperature high-pressure gaseous refrigerant generated by the compressor 2 is certainly not high when the frost is not removed; during defrosting, the heat of the high-temperature and high-pressure gaseous refrigerant generated by the compressor 2 is not high as the heat of the refrigerant flowing into the shell-and-tube heat exchanger 12 after heat exchange of the water-side heat exchange circulating system; therefore, in the water side heat exchange circulating system, the refrigerant flowing into the tube heat exchanger 12 after heat exchange and the refrigerant flowing into the tube heat exchanger 12 in the defrosting circulating system exchange heat, so that the heat of the refrigerant flowing into the tube heat exchanger 12 in the defrosting circulating system is improved, the defrosting effect of the air side heat exchanger 1 is improved, and the heating effect and the heating efficiency of the air source heat pump are improved;
as shown in fig. 1, the utility model relates to a hot air defrosting device for a heat pump unit, which comprises an air side heat exchanger 1, a compressor 2, a water side heat exchanger 3, an expansion valve 4 and a liquid storage tank 5; the water side heat exchanger 3 is arranged in the heat preservation water tank 6;
the air side heat exchanger 1 is communicated with a four-way valve 7 through a compressor 2, the four-way valve 7 is communicated with an input port of the water side heat exchanger 3, an output port of the water side heat exchanger 3 is communicated with an expansion valve 4 through a first three-way valve 8, an output port of the expansion valve 4 is communicated with an input port of a liquid storage tank 5 through a second three-way valve 9, an output port of the liquid storage tank 5 is communicated with a fourth three-way valve 11 through a third three-way valve 10, and the fourth three-way valve 11 is communicated with an input port;
an air source heat pump circulating system is sequentially formed among the air side heat exchanger 1, the compressor 2, the four-way valve 7, the water side heat exchanger 3, the first three-way valve 8, the expansion valve 4, the second three-way valve 9, the liquid storage tank 5, the third three-way valve 10 and the fourth three-way valve 11; the air source heat pump circulating system is the prior art, and the technical scheme is that a four-way valve 7, a first three-way valve 8, a second three-way valve 9, a third three-way valve 10 and a fourth three-way valve 11 are added in the existing air source heat pump system; the air source heat pump circulating system in the technical scheme only lists core components and components related to the technical scheme, and other components such as a flow control valve and the like can be added according to requirements;
when the air source heat pump system works normally and provides heat for people, the microprocessor controls the four-way valve 7, the first three-way valve 8, the second three-way valve 9, the third three-way valve 10 and the fourth three-way valve 11 to act, the compressor 2 and the fan are enabled to work, and the water pump 13 stops working; the low-temperature low-pressure liquid refrigerant enters the air side heat exchanger 1 from the liquid storage tank 5 through the third three-way valve 10 and the fourth three-way valve 11 in sequence, the low-temperature low-pressure liquid refrigerant is changed into a high-temperature low-pressure steam refrigerant after heat exchange in the air side heat exchanger 1 and is changed into a high-temperature high-pressure gas refrigerant under the action of the compressor 2, and the high-temperature high-pressure gas refrigerant flows to the water side heat exchanger 3 through the four-way valve 7 and exchanges heat with water in the heat preservation water tank 6 to improve the heat or the temperature of; the high-pressure liquid refrigerant flowing out of the water side heat exchanger 3 enters the expansion valve 4 through the first three-way valve 8 to be changed into low-temperature and low-pressure liquid refrigerant, and the low-temperature and low-pressure liquid refrigerant enters the liquid storage tank 5 through the second three-way valve 9 until one working cycle of the air source heat pump circulating system is finished; as in the cyclic direction of the implementation arrows in fig. 1.
The four-way valve 7 is communicated with a first liquid inlet of the tube-shell heat exchanger 12, and a first liquid outlet of the tube-shell heat exchanger 12 is communicated with the air-side heat exchanger 1 through a fourth three-way valve 11;
a defrosting circulation system is formed among the air side heat exchanger 1, the compressor 2, the four-way valve 7, the shell-and-tube heat exchanger 12 and the fourth three-way valve 11 in sequence;
the second three-way valve 9 is communicated with the four-way valve 7 through a water pump 13; the first three-way valve 8 is communicated with a second liquid inlet of the tube-shell heat exchanger 12, and a second liquid outlet of the tube-shell heat exchanger 12 is communicated with the third three-way valve 10;
a water side heat exchange circulating system is sequentially formed among the liquid storage tank 5, the water pump 13, the four-way valve 7, the water side heat exchanger 3, the first three-way valve 8, the shell and tube heat exchanger 12 and the third three-way valve 10.
When the defrosting circulation system works, the water side heat exchange circulation system also works at the same time to prepare for the air side heat exchanger 1; the microprocessor controls the four-way valve 7, the first three-way valve 8, the second three-way valve 9, the third three-way valve 10 and the fourth three-way valve 11 to act, and enables the compressor 2, the fan and the water pump 13 to work;
in the defrosting circulation system, a low-temperature low-pressure liquid refrigerant is changed into a high-temperature low-pressure steam refrigerant after being subjected to heat exchange in the air side heat exchanger 1, and is changed into a high-temperature high-pressure gas refrigerant under the action of the compressor 2, and the high-temperature high-pressure gas refrigerant enters the shell-and-tube heat exchanger 12 and then enters the air side heat exchanger 1 through the fourth three-way valve 11; the process can effectively defrost the air side heat exchanger 1 by the heat carried by the high-temperature and high-pressure gas refrigerant, but the air side heat exchanger 1 is in a frosting state, so the defrosting effect of the defrosting circulation system is poor and is slow;
in the water side heat exchange circulation system, a low-temperature low-pressure liquid refrigerant enters the water side heat exchanger 3 from the liquid storage tank 5 through the second three-way valve 9, the water pump 13 and the four-way valve 7 in sequence under the action of the water pump 13 and exchanges heat with hot water in the heat preservation water tank 6, at the moment, the water temperature in the heat preservation water tank 6 is reduced, and a high-temperature gaseous refrigerant after heat exchange flows to the shell-and-tube heat exchanger 12 through the first three-way valve 8; the high-temperature gaseous refrigerant flowing out of the first three-way valve 8 in the shell-and-tube heat exchanger 12 exchanges heat with the high-temperature high-pressure gas refrigerant in the defrosting circulation system, and the high-temperature gaseous refrigerant flowing out of the first three-way valve 8 provides heat for the high-temperature high-pressure gaseous refrigerant flowing to the water-side heat exchanger 3 and then flows into the liquid storage tank 5 again through the third three-way valve 10; the water side heat exchange circulating system mainly provides heat for a refrigerant in the defrosting circulating system so as to improve the defrosting efficiency; the direction of circulation as shown by the dashed arrow in FIG. 1;
the water side heat exchange circulating system and the defrosting circulating system can operate independently, and in order to guarantee the defrosting effect, the water side heat exchange circulating system and the defrosting circulating system work simultaneously, so that the defrosting effect is better.
Wherein, a temperature sensor and a fan are respectively arranged in the air side heat exchanger 1; the temperature sensor, the fan, the compressor 2, the four-way valve 7, the first three-way valve 8, the second three-way valve 9, the third three-way valve 10, the fourth three-way valve 11 and the water pump 13 are electrically connected with a microprocessor; the temperature sensor is a WZR-291 thermal resistor PT 100; the model of the microprocessor is an STC15F2K60S2 singlechip.
The temperature sensor transmits the detected temperature data in the air side heat exchanger 1 to the microprocessor as a judgment basis for the microprocessor to send instructions; in addition, the frosting condition of the air side heat exchanger 1 can be monitored through other prior arts to be used as a judgment basis for sending an instruction by the microprocessor.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (2)

1. A hot defrosting device for a heat pump unit comprises an air side heat exchanger (1), a compressor (2), a water side heat exchanger (3), an expansion valve (4) and a liquid storage tank (5); the water side heat exchanger (3) is arranged in the heat preservation water tank (6); the method is characterized in that:
the air side heat exchanger (1) is communicated with a four-way valve (7) through a compressor (2), the four-way valve (7) is communicated with an input port of the water side heat exchanger (3), an output port of the water side heat exchanger (3) is communicated with an expansion valve (4) through a first three-way valve (8), an output port of the expansion valve (4) is communicated with an input port of a liquid storage tank (5) through a second three-way valve (9), an output port of the liquid storage tank (5) is communicated with a fourth three-way valve (11) through a third three-way valve (10), and the fourth three-way valve (11) is communicated with the input port of the air side heat exchanger (1);
an air source heat pump circulating system is sequentially formed among the air side heat exchanger (1), the compressor (2), the four-way valve (7), the water side heat exchanger (3), the first three-way valve (8), the expansion valve (4), the second three-way valve (9), the liquid storage tank (5), the third three-way valve (10) and the fourth three-way valve (11);
the four-way valve (7) is communicated with a first liquid inlet of the tube-shell heat exchanger (12), and a first liquid outlet of the tube-shell heat exchanger (12) is communicated with the air-side heat exchanger (1) through a fourth three-way valve (11);
a defrosting circulation system is formed among the air side heat exchanger (1), the compressor (2), the four-way valve (7), the shell-and-tube heat exchanger (12) and the fourth three-way valve (11) in sequence;
the second three-way valve (9) is communicated with the four-way valve (7) through a water pump (13); the first three-way valve (8) is communicated with a second liquid inlet of the tube-shell heat exchanger (12), and a second liquid outlet of the tube-shell heat exchanger (12) is communicated with a third three-way valve (10);
and a water side heat exchange circulating system is sequentially formed among the liquid storage tank (5), the water pump (13), the four-way valve (7), the water side heat exchanger (3), the first three-way valve (8), the shell and tube heat exchanger (12) and the third three-way valve (10).
2. The hot defrosting device for a heat pump unit according to claim 1, characterized in that a temperature sensor and a fan are respectively installed in the air side heat exchanger (1); the temperature sensor, the fan, the compressor (2), the four-way valve (7), the first three-way valve (8), the second three-way valve (9), the third three-way valve (10), the fourth three-way valve (11) and the water pump (13) are electrically connected with the microprocessor.
CN201921696619.5U 2019-10-11 2019-10-11 Hot air defrosting device for heat pump unit Active CN210663486U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921696619.5U CN210663486U (en) 2019-10-11 2019-10-11 Hot air defrosting device for heat pump unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921696619.5U CN210663486U (en) 2019-10-11 2019-10-11 Hot air defrosting device for heat pump unit

Publications (1)

Publication Number Publication Date
CN210663486U true CN210663486U (en) 2020-06-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921696619.5U Active CN210663486U (en) 2019-10-11 2019-10-11 Hot air defrosting device for heat pump unit

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CN (1) CN210663486U (en)

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