CN218033853U

CN218033853U - Low-temperature vortex air energy heat pump non-stop segmented defrosting device

Info

Publication number: CN218033853U
Application number: CN202222454057.1U
Authority: CN
Inventors: 郭超; 凌玉蓉; 林晓山; 袁成利
Original assignee: Weifang Hanjin Energy Efficient Wen Stressed Equipment Co ltd
Current assignee: Weifang Hanjin Energy Efficient Wen Stressed Equipment Co ltd
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2022-12-13
Anticipated expiration: 2032-09-16

Abstract

The utility model discloses a low temperature vortex air can heat pump do not shut down segmentation defrosting device, which comprises an outer shell, install first evaporimeter on the inner wall of shell in proper order, the evaporimeter in the second evaporimeter and, first evaporimeter, the refrigerant inlet of putting evaporimeter and second evaporimeter in connects through four-way pipe down, total electric switch valve is installed to the bottom of four-way pipe down, the bottom of total electric switch valve and the expansion valve interconnect in the low temperature vortex air can the heat pump, first evaporimeter, the refrigerant discharge pipe is all installed to the refrigerant liquid outlet of putting evaporimeter and second evaporimeter in. The utility model discloses utilize the segmentation defrosting technique, other evaporimeter is all normally heating when defrosting as one section evaporimeter, can not cause the fluctuation of system temperature among the defrosting process, and can save installation buffer tank, energy-conserving use cost when defrosting after the system temperature of heat pump unit is not undulant or undulant little.

Description

Low-temperature vortex air energy heat pump non-stop segmented defrosting device

Technical Field

The utility model relates to a low temperature vortex air can heat pump technical field, specifically is a low temperature vortex air can heat pump does not shut down segmentation defrosting device.

Background

With the popularization of air energy heat pumps in various places, people enjoy clean energy to bring warmth and comfort to people in winter, and the low-temperature vortex air energy heat pump unit mainly comprises a closed system formed by four main components, namely an evaporator, a condenser, a compressor and an expansion valve, and a proper amount of working medium is filled in the closed system. The basic principle of the unit operation is based on the inverse Carnot cycle principle, liquid working medium firstly absorbs heat in air in an evaporator to evaporate to form steam (vaporization), latent heat of vaporization is recovered heat, then the steam is compressed into high-temperature high-pressure gas by a compressor, the high-temperature high-pressure gas enters a condenser to be condensed into liquid (liquefied), the absorbed heat is sent to a water tank to be heated, the liquid working medium is decompressed and expanded by an expansion valve and then returns to the expansion valve again to absorb heat to evaporate to complete a cycle, and the cycle is repeated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low temperature vortex air can heat pump does not shut down segmentation defrosting device to can bring undulant problem for indoor heating when solving the frosting inefficiency of low temperature vortex air can heat pump defrosting among the above-mentioned background art and changing the frost.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a low temperature vortex air can heat pump does not shut down segmentation defrosting device, includes the shell, install first evaporimeter, second evaporimeter in proper order on the inner wall of shell and put the evaporimeter in, the refrigerant inlet of first evaporimeter, putting evaporimeter and second evaporimeter in connects through four-way pipe down, total electric switch valve is installed to the bottom of four-way pipe down, and the bottom of total electric switch valve and the expansion valve interconnect in the low temperature vortex air can the heat pump, the refrigerant discharge pipe is all installed to the refrigerant liquid outlet of first evaporimeter, the middle evaporimeter of putting and second evaporimeter, vice electric switch valve is installed on the top of refrigerant discharge pipe, and three groups through last four-way pipe interconnect between the vice electric switch valve, install the diffuser on the both sides outer wall of second evaporimeter, the PLC controller is installed to one side of shell bottom, the output of PLC controller and the input electric connection of the vice electric switch valve of three groups of three and total electric switch valve.

Preferably, vertical plates are fixed on the outer walls of the two sides of the shell, and heat exchange holes are formed in the surfaces of the vertical plates.

Preferably, a sealing ring is mounted on the top of the housing and corresponds to the refrigerant discharge pipe, and the inner diameter of the sealing ring is equal to the outer diameter of the refrigerant discharge pipe.

Preferably, the vertical plate is made of a member made of an aluminum alloy material, and the cross section of the heat exchange hole is circular.

Preferably, the sealing ring is an HNBR hydrogenated butyronitrile O type sealing ring.

Preferably, a refrigerant discharge header pipe is installed at the top end of the upper four-way pipe, and the refrigerant discharge header pipe is connected with compressors in the low-temperature vortex air energy heat pump unit at one end far away from the upper four-way pipe.

Compared with the prior art, the beneficial effects of the utility model are that: this section defrosting device is not shut down to low temperature vortex air can heat pump utilizes the segmentation defrosting technique, and other evaporimeters are all carrying out normal heating when one section evaporimeter defrosting, can not cause the fluctuation of system's temperature among the defrosting process, and can save installation buffer tank when defrosting after the system temperature of heat pump unit is not undulant or undulant little, energy-conserving use cost.

Drawings

Fig. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic view of the main sectional structure of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2 according to the present invention;

fig. 4 is a schematic side view of the cross-sectional structure of the present invention;

in the figure: 1. a housing; 101. a vertical plate; 102. heat exchange holes; 103. a seal ring; 2. a first evaporator; 201. a refrigerant discharge pipe; 202. a secondary electric on-off valve; 3. an evaporator is arranged in the middle; 4. a second evaporator; 5. a diffuser; 6. a lower four-way pipe; 7. a master electric on-off valve; 8. a PLC controller; 9. an upper four-way pipe; 10. the refrigerant is discharged out of the header pipe.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: a low-temperature vortex air energy heat pump non-stop sectional defrosting device comprises a shell 1, wherein a first evaporator 2, a second evaporator 4 and a middle evaporator 3 are sequentially arranged on the inner wall of the shell 1, refrigerant liquid inlets of the first evaporator 2, the middle evaporator 3 and the second evaporator 4 are connected through a lower four-way pipe 6, the first evaporator 2, the middle evaporator 3 and the second evaporator 4 perform multi-section flow distribution and heat absorption, and all gasified refrigerants absorbing heat enter a compressor to perform heat lifting;

a main electric switch valve 7 is installed at the bottom end of the lower four-way pipe 6, the bottom end of the main electric switch valve 7 is connected with an expansion valve in the low-temperature vortex air energy heat pump, refrigerant outlet ports of the first evaporator 2, the middle evaporator 3 and the second evaporator 4 are all provided with a refrigerant discharge pipe 201, the top end of the refrigerant discharge pipe 201 is provided with an auxiliary electric switch valve 202, and the three groups of auxiliary electric switch valves 202 are connected with each other through an upper four-way pipe 9;

a refrigerant discharge header pipe 10 is arranged at the top end of the upper four-way pipe 9, and compressors in the low-temperature vortex air energy heat pump unit are connected with each other at one end, far away from the upper four-way pipe 9, of the refrigerant discharge header pipe 10;

the top of the shell 1 is provided with a sealing ring 103 corresponding to the position of the refrigerant discharge pipe 201, the inner diameter of the sealing ring 103 is equal to the outer diameter of the refrigerant discharge pipe 201, and the sealing ring 103 adopts an HNBR O-type sealing gasket;

the two side outer walls of the second evaporator 4 are provided with air diffusers 5, two sets of air diffusers 5 are used for increasing air flow rate and taking away temperature, one side of the bottom of the shell 1 is provided with a PLC (programmable logic controller) 8, the output end of the PLC 8 is electrically connected with the three sets of auxiliary electric switch valves 202 and the input end of the main electric switch valve 7, when the low-temperature vortex air energy heat pump has defrosting conditions or needs defrosting, the PLC 8 controls any one set of auxiliary electric switch valve 202 to be closed and controls the two sets of air diffusers 5 to work;

at most, only one section of evaporator in the device carries out defrosting operation at the same time, so that the other evaporator still can be heated when the evaporator carries out single-section defrosting, the water temperature of the low-temperature vortex air energy heat pump system is not greatly fluctuated at the moment, the defrosting speed of the heat pump unit can be increased, and the low-temperature vortex air energy heat pump unit can carry out defrosting operation without stopping operation in the process;

all be fixed with riser 101 on the both sides outer wall of shell 1, heat transfer hole 102 has been seted up on the surface of riser 101, and riser 101 adopts the component of aluminum alloy material to make, and heat transfer hole 102's cross sectional shape is circular, and when diffuser 5 worked, heat transfer hole 102 played the effect of circulation of air to make the evaporimeter change frost fast.

When the defrosting device is used, firstly, the first evaporator 2, the middle evaporator 3 and the second evaporator 4 perform multi-section shunting and heat absorption, all gasified refrigerants after heat absorption enter the compressor to perform heat lifting, when the low-temperature vortex air energy heat pump has defrosting conditions or needs defrosting, the PLC controller 8 controls any one group of auxiliary electric switch valves 202 to be closed, and controls two groups of diffusers 5 to work, the auxiliary electric switch valves 202 on the second evaporator 4 are closed as an example, at the moment, the second evaporator 4 is integrally in a normally closed state, the refrigerants cannot flow in the second evaporator 4, namely, the refrigerants are shunted to the first evaporator 2 and the middle evaporator 3 from the lower four-way pipe 6, so that the first evaporator 2 and the middle evaporator 3 still absorb heat, the two groups of diffusers 5 lift the air flow rate and take the temperature away, namely, at most only one section of evaporators in the device perform defrosting work at the same time, so that the evaporators still perform heat production when a single section of evaporators are defrosting, at the low-temperature air energy heat pump system does not absorb heat, and the low-temperature fluctuation of the vortex air energy heat pump can be increased, and the defrosting efficiency can be increased, and the defrosting cost can be reduced.

Claims

1. The utility model provides a low temperature vortex air can heat pump does not shut down segmentation defrosting device which characterized in that: including shell (1), install first evaporimeter (2), second evaporimeter (4) and put evaporimeter (3) in the middle on the inner wall of shell (1) in proper order, the refrigerant inlet of first evaporimeter (2), put evaporimeter (3) and second evaporimeter (4) connects through four-way pipe (6) down, total electric switch valve (7) are installed to the bottom of four-way pipe (6) down, and the expansion valve interconnect in the bottom of total electric switch valve (7) and the low temperature vortex air energy heat pump, refrigerant discharge pipe (201) are all installed to the refrigerant liquid outlet of first evaporimeter (2), put evaporimeter (3) and second evaporimeter (4) in, vice electric switch valve (202) are installed on the top of refrigerant discharge pipe (201), three groups through last four-way pipe (9) interconnect between vice electric switch valve (202), install on the both sides outer wall of second evaporimeter (4) diffuser (5), PLC controller (8) are installed to one side of shell (1) bottom, PLC controller (8) and three electric switch valve output and electric switch valve (7) of group electric switch input.

2. The non-stop segmented defrosting device of a low-temperature vortex air-source heat pump according to claim 1, which is characterized in that: vertical plates (101) are fixed on the outer walls of the two sides of the shell (1), and heat exchange holes (102) are formed in the surfaces of the vertical plates (101).

3. The non-stop segmented defrosting device of a low-temperature vortex air-source heat pump according to claim 1, which is characterized in that: and a sealing ring (103) corresponding to the position of the refrigerant discharge pipe (201) is arranged at the top of the shell (1), and the inner diameter of the sealing ring (103) is equal to the outer diameter of the refrigerant discharge pipe (201).

4. The non-stop segmented defrosting device of a low-temperature vortex air-source heat pump according to claim 2, characterized in that: the vertical plate (101) is made of a component made of an aluminum alloy material, and the cross section of the heat exchange hole (102) is circular.

5. The non-stop segmented defrosting device of a low-temperature vortex air-source heat pump according to claim 3, characterized in that: the sealing ring (103) is an HNBR hydrogenated butyronitrile O-type sealing ring.

6. The non-stop segmented defrosting device of a low-temperature vortex air-source heat pump according to claim 1, which is characterized in that: and a refrigerant discharge header pipe (10) is installed at the top end of the upper four-way pipe (9), and the refrigerant discharge header pipe (10) is far away from the compressor of the low-temperature vortex air energy heat pump unit at one end of the upper four-way pipe (9) and is connected with the compressor.