CN213362913U

CN213362913U - Air-cooled heat pump water chilling unit with backheating circulating device

Info

Publication number: CN213362913U
Application number: CN202022430199.5U
Authority: CN
Inventors: 杨丹丹; 李璐峰; 高建廷; 沈中将
Original assignee: KUNSHAN TECKA ELECTROMECHANICAL CO Ltd
Current assignee: KUNSHAN TECKA ELECTROMECHANICAL CO Ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2021-06-04
Anticipated expiration: 2030-10-28

Abstract

The utility model discloses a belong to the technical field of refrigeration, in particular to an air-cooled heat pump water chilling unit with a regenerative cycle device, which comprises a compressor, wherein the compressor is connected with a four-way valve through a pipeline, the four-way valve is connected with a condenser component through a pipeline, the condenser component is connected with a check valve component through a pipeline, the check valve component is connected with a liquid storage device through a pipeline, the liquid storage device is connected with a gas-liquid separator through a pipeline, the gas-liquid separator is connected with a stop valve through a pipeline, the stop valve is connected with a drying filter through a pipeline, the drying filter is connected with a stop valve through a pipeline, the stop valve is connected with an expansion valve through a pipeline, the gas-liquid separator has simple structure and convenient manufacture, and can heat lubricating oil remained in the gas, and effectively avoids the great reduction of the viscosity of the lubricating oil.

Description

Air-cooled heat pump water chilling unit with backheating circulating device

Technical Field

The utility model relates to the field of refrigeration technology, specifically be an air-cooled heat pump cooling water set with backheat circulating device.

Background

When the existing air-cooled heat pump water cooling (heating) unit is designed, in order to improve the refrigerating capacity and the operation stability of a refrigerating system, on one hand, a superheating heat exchange pipe section is required to be added in an evaporator, the superheating heat exchange pipe section can enable a compressor to have certain superheat degree when sucking air, and ensure that a refrigerant entering the compressor is in a gas state, so that the refrigerant is prevented from being subjected to liquid compression, meanwhile, the superheating heat exchange pipe section can enable lubricating oil in the compressor to have certain temperature, the lubricating oil keeps the temperature, so that the solubility of the refrigerant in the lubricating oil can be reduced, and the lubricating oil can have reasonable viscosity, and the stable operation of the compressor is ensured; on the other hand, a supercooling heat exchange tube section is required to be added in the condenser, the supercooling heat exchange tube section can enable the refrigerant liquid in front of the expansion valve to have a certain supercooling degree, so that the vaporization rate of the liquid refrigerant in front of the expansion valve is reduced, and the refrigerating capacity of the refrigerant with unit mass flow can be increased by adding the supercooling heat exchange tube section.

The use amount of copper pipes and aluminum foils can be increased by adding the supercooling heat exchange pipe section in the condenser, the use amount of copper pipes can be increased by adding the superheating heat exchange pipe section in the evaporator, the production cost is increased, and the heat exchange efficiency is lower no matter the finned condenser performs supercooling heat exchange on refrigerant liquid or the shell-and-tube evaporator performs superheating heat exchange on refrigerant gas.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an air-cooled heat pump cooling water set with backheat circulating device to solve the lower problem of current air-cooled heat pump cooling water set heat exchange efficiency who proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an air-cooled heat pump water chilling unit with a regenerative cycle device comprises a compressor, wherein the compressor is connected with a four-way valve through a pipeline, the four-way valve is connected with a condenser assembly through a pipeline, the condenser assembly is connected with a one-way valve assembly through a pipeline, the one-way valve assembly is connected with a liquid storage device through a pipeline, the liquid storage device is connected with a gas-liquid separator through a pipeline, the gas-liquid separator is connected with a first stop valve through a pipeline, the first stop valve is connected with a drying filter through a pipeline, the drying filter is connected with a second stop valve through a pipeline, the second stop valve is connected with an expansion valve through a pipeline, the expansion valve is connected with the one-way valve assembly through a pipeline, the one-way valve assembly is connected with an evaporator through a, the gas-liquid separator is connected with the compressor through a pipeline.

Preferably, gas-liquid separator includes barrel, outlet duct and intake pipe, the upside welding of barrel has last flat cover, the upside welding of going up flat cover has disk seat and No. two disk seats, disk seat and No. two disk seats all communicate with the inner chamber of barrel, outlet duct and intake pipe all run through last flat cover and communicate with the inner chamber of barrel, the downside welding of barrel has lower flat cover, the top welding of lower flat cover has supercooling device and baffle, supercooling device and baffle are all in the inboard of barrel, supercooling device's front side is connected with the socket, the barrel is run through to the front side of socket, the outside below welding of lower flat cover has fixed angle seat.

Preferably, the supercooling device includes feed liquor pipe and drain pipe, the rear side of feed liquor pipe and drain pipe has all welded the head No. one, the upside of feed liquor pipe and the downside of drain pipe all are connected with and divide the liquid pipe, between feed liquor pipe and the left side branch liquid pipe, both sides between the branch liquid pipe and between drain pipe and the right side branch liquid pipe all welded the heat exchange tube No. one, feed liquor pipe and left side branch are connected with the heat exchange tube No. two between the liquid pipe, the right side the upside welding of branch liquid pipe has No. two heads.

Preferably, the central axis of the cylinder body and the central axis of the upper flat cover are collinear with the central axis of the lower flat cover.

Preferably, check valve subassembly includes four check valves and a tee bend No. two, and the upside is two all through being connected with the tee bend No. two between the check valve and between two check valves of downside, two on the left side the check valve all communicates through pipeline and a tee bend in left side, and two on the right side the check valve all communicates through pipeline and a tee bend in right side.

Compared with the prior art, the beneficial effects of the utility model are that:

1) the gas-liquid separator has a simple structure and is convenient to manufacture, and the lubricating oil retained in the gas-liquid separator can be heated, so that the dissolution of a refrigerant in the lubricating oil is reduced, and the viscosity of the lubricating oil is effectively prevented from being greatly reduced;

2) the gas-liquid separator has the supercooling and overheating functions, the using amount of heat exchange copper pipes and aluminum foils of the air-cooled condenser can be reduced, and the using amount of the heat exchange copper pipes of the shell-and-tube heat exchanger is reduced, so that the manufacturing cost is reduced, and meanwhile, the refrigerating and heating efficiency of the unit can be improved by passing through the gas-liquid separator.

Drawings

FIG. 1 is a schematic structural view of a gas-liquid separator according to the present invention;

FIG. 2 is a schematic structural view of the gas-liquid separator of the present invention;

FIG. 3 is a schematic view of the internal structure of the cylinder of the gas-liquid separator of the present invention;

fig. 4 is a schematic structural diagram of the supercooling device of the present invention.

In the figure: 1 compressor, 2 vapour and liquid separators, 201 barrel, 202 upper flat cover, No. 203 valve seat, 204 outlet duct, 205 intake pipe, No. 206 valve seat, 207 adapter, 208 supercooling device, 2081 feed liquor pipe, 2082 liquid distribution pipe, No. 2083 heat exchange tube, No. 2084 heat exchange tube, 2085 drain pipe, No. 2086 head, No. 2087 head, 209 lower flat cover, 210 fixed angle seat, 211 baffle, 3 evaporator, 4 reservoir, 5 drying filter, 6 expansion valve, 7 one-way valve component, No. 71 three-way, No. 72 three-way, No. 8 condenser component, 9 four-way valve, No. 10 stop valve, No. 11 stop valve.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1-4, the present invention provides a technical solution: an air-cooled heat pump water chilling unit with a backheating circulating device comprises a compressor 1, wherein the compressor 1 is connected with a four-way valve 9 through a pipeline, the four-way valve 9 comprises C, D, E, S four interfaces, an exhaust port of the compressor 1 is connected with a D interface of the four-way valve 9, a C interface of the four-way valve 9 is connected with an air pipe of a condenser assembly 8 through a pipeline, a liquid pipe of the condenser assembly 8 is connected with a one-way valve assembly 7, the one-way valve assembly 7 is connected with an inlet of a liquid storage device 4, an outlet of the liquid storage device 4 is connected with a pipe connecting seat 207 on the front side of a liquid inlet pipe 2081 of a gas-liquid separator 2, the pipe connecting seat 207 on the front side of a liquid outlet pipe 2085 of the gas-liquid separator 2 is connected with a first stop valve 10, the first stop valve 10 is connected, the expansion valve 6 is connected with the one-way valve component 7 through a pipeline, the one-way valve component 7 is connected with the inlet of the evaporator 3 through a pipeline, the outlet of the evaporator 3 is connected with the E interface of the four-way valve 9, the S interface of the four-way valve 9 is connected with the air inlet pipe 205 of the gas-liquid separator 2, and the air outlet pipe 204 of the gas-liquid separator 2 is connected with the air suction port of the compressor 1.

The gas-liquid separator 2 comprises a cylinder body 201, an air outlet pipe 204 and an air inlet pipe 205, wherein an upper flat cover 202 is welded on the upper side of the cylinder body 201, a first valve seat 203 and a second valve seat 206 are welded on the upper side of the upper flat cover 202, the first valve seat 203 and the second valve seat 206 are both communicated with the inner cavity of the cylinder body 201, the air outlet pipe 204 and the air inlet pipe 205 both penetrate through the upper flat cover 202 and are communicated with the inner cavity of the cylinder body 201, the lower end of the air outlet pipe 204 extends into the bottom of the inner cavity of the cylinder body 201, the air outlet pipe 204 and the air inlet pipe 205 are both welded with the upper flat cover 202, a lower flat cover 209 is welded on the lower side of the cylinder body 201, a supercooling device 208 and a baffle 211 are welded above the lower flat cover 209, the supercooling device 208 and the baffle 211 are both arranged on the inner side of the cylinder body 201, the front side of the supercooling device 208 is connected with pipe connecting pipes 207, the number, the tube connecting seat 207 is welded with the cylinder 201, the welding position is arranged on the inner side of the cylinder 201, the fixed angle seat 210 is welded below the outer side of the lower flat cover 209, and the lower plane of the fixed angle seat 210 is flush with the lower plane of the lower flat cover 209.

The supercooling device 208 comprises a liquid inlet pipe 2081 and a liquid outlet pipe 2085, a first end socket 2086 is welded on the rear sides of the liquid inlet pipe 2081 and the liquid outlet pipe 2085, a liquid dividing pipe 2082 is connected on the upper side of the liquid inlet pipe 2081 and the lower side of the liquid outlet pipe 2085, a first heat exchange pipe 2083 is welded between the liquid inlet pipe 2081 and the left liquid dividing pipe 2082, a second heat exchange pipe 2084 is connected between the liquid inlet pipe 2081 and the left liquid dividing pipe 2082, a second end socket 2087 is welded on the upper side of the right liquid dividing pipe 2082, the liquid inlet pipe 2081 is welded with the right liquid dividing pipe 2082, a first heat exchange pipe 2083, a first heat exchange pipe 2086 and a second heat exchange pipe 2084, the right liquid dividing pipe 2082 is welded with the second end socket 2087, the first heat exchange pipe 2083 and the second heat exchange pipe 2084, the left liquid dividing pipe 2082 is welded with the first heat exchange pipe 2083 and the second heat exchange pipe 2084, and the liquid dividing pipe 2085 is welded with the left liquid dividing pipe 2085, and the liquid dividing, A first heat exchange tube 2083 and a first end socket 2086 are welded, and the central axis of a liquid inlet tube 2081 is parallel to the central axis of a liquid outlet tube 2085 after welding.

The central axis of the cylinder 201, the central axis of the upper flat cover 202 and the central axis of the lower flat cover 209 are collinear.

The check valve assembly 7 comprises four check valves and two first-side tee joints 71, the four check valves are respectively numbered as CV1, CV2, CV3 and CV4, two second-side tee joints 72 are respectively connected between the check valves CV1 and CV4 and between the check valves CV2 and CV3, the other ends of the check valves CV1 and CV2 are communicated with the first-side tee joints 71 through pipelines, the other ends of the check valves CV3 and CV4 are communicated with the first-side tee joints 71 through pipelines, the first-side tee joints 71 are communicated with a liquid pipe of the condenser assembly 8 through pipelines, the first-side tee joints 71 are communicated with an inlet of the evaporator 3 through pipelines, the second-side tee joints 72 are communicated with the expansion valve 6 through pipelines, and the second-side tee joints 72 are communicated with an inlet of the liquid reservoir 4 through pipelines.

For different air-cooled heat pump water chilling units, the number of the first heat exchange tube 2083 and the second heat exchange tube 2084 of the supercooling device 208 can be increased or reduced according to the heat exchange amount required by different refrigerants for heat exchange, the pipe diameters and the lengths of the liquid inlet pipe 2081, the liquid outlet pipe 2085 and the liquid separating pipe 2082 are changed simultaneously, and the size of the gas-liquid separator 2 is adjusted to meet the requirements of the units.

The working principle is as follows: when refrigeration is needed, refrigerant superheated gas is discharged from the compressor 1, the refrigerant superheated gas enters from a D interface of the four-way valve 9 through a pipeline, then is discharged from a C interface of the four-way valve 9 and enters the condenser assembly 8 through a pipeline, the refrigerant superheated gas is condensed into refrigerant liquid in the condenser assembly 8, the refrigerant liquid flows out of the condenser assembly 8, sequentially passes through a left side first three-way valve 71, a one-way valve CV2, a lower side second three-way valve 72 and the liquid storage device 4 through pipelines, flows into the gas-liquid separator 2 from a pipe connecting seat 207 on the front side of the liquid inlet pipe 2081 and is further cooled in the gas-liquid separator 2, then the refrigerant liquid flows out from a front side pipe seat 207 of the liquid outlet pipe 2085, sequentially passes through a first stop valve 10, a drying filter 5, a second stop valve 11, an expansion valve 6, an upper side second three-way valve 72, a one-way valve CV4 and a right side first, the expansion valve 6 can throttle and depressurize refrigerant liquid, the refrigerant liquid is changed into saturated gaseous refrigerant after undergoing evaporation heat exchange in the evaporator 3, the gaseous refrigerant flowing out of the evaporator 3 enters from an E interface of the four-way valve 9 through a pipeline, then flows out from an S interface of the four-way valve 9 and flows into the gas-liquid separator 2 from an air inlet pipe 205 of the gas-liquid separator 2 through a pipeline, the gaseous refrigerant flows out from an air outlet pipe 204 of the gas-liquid separator 2 after undergoing heat exchange and overheating in the gas-liquid separator 2 and enters the compressor 1 through a pipeline, and the refrigeration cycle process is completed;

when heating is needed, refrigerant superheated gas is discharged from the compressor 1, enters from a D interface of the four-way valve 9 through a pipeline, is discharged from an E interface of the four-way valve 9 and enters into the evaporator 3 through a pipeline, enters into the right first three-way 71 through a pipeline after being condensed and cooled in the evaporator 3, then sequentially passes through the one-way valve CV3, the lower second three-way 72 and the liquid storage device 4 through a pipeline, flows into the gas-liquid separator 2 from the pipe socket 207 on the front side of the liquid inlet pipe 2081, is further cooled in the gas-liquid separator 2, then flows out from the front side pipe socket 207 of the liquid outlet pipe 2085, sequentially passes through the first stop valve 10, the drying filter 5, the second stop valve 11, the expansion valve 6, the upper second three-way 72, the one-way valve CV1 and the left first three-way 71 through a pipeline, and enters the condenser assembly 8, wherein the expansion valve 6 can reduce the pressure and throttle the refrigerant liquid, then flows out of the condenser assembly 8, flows in from a C interface of the four-way valve 9, then flows out from an S interface of the four-way valve 9, flows into the gas-liquid separator 2 from a gas outlet pipe 205 of the gas-liquid separator 2, carries out heat exchange and overheating, and then flows out of a gas outlet pipe 204 of the gas-liquid separator 2 and enters the compressor 1 through a pipeline, thus completing the heating cycle process;

when the device is used, low-temperature and low-pressure refrigerant gas enters the gas-liquid separator 2 through the gas inlet pipe 205, high-pressure and high-temperature refrigerant liquid flows into the supercooling device 208 from the pipe connecting seat 207 at the front side of the liquid inlet pipe 2081, a small amount of non-evaporated refrigerant liquid possibly contained in the gas-liquid separator 2 exchanges heat with the low-temperature and low-pressure refrigerant gas to realize supercooling of the refrigerant liquid, the refrigerant gas in the gas-liquid separator 2 exchanges heat with the refrigerant liquid in the supercooling device 208, the refrigerant gas is discharged out of the gas-liquid separator 2 through the gas outlet pipe 204, part of lubricating oil particles carried in the low-temperature and low-pressure refrigerant gas are settled to one side of the supercooling device 208 in the gas-liquid separator 2 under the action of downward gas flow of the gas inlet pipe 205 and self gravity, and the accumulated lubricating oil exchanges heat with the, the lubricant accumulates to a certain amount and flows over the baffle 211 into the outlet pipe 204, where it is carried back to the compressor by the refrigerant gas that has been superheated through the outlet pipe 204.

Having shown and described the basic principles and principal features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an air-cooled heat pump cooling water set with backheat circulating device, includes compressor (1), its characterized in that: the compressor (1) is connected with a four-way valve (9) through a pipeline, the four-way valve (9) is connected with a condenser assembly (8) through a pipeline, the condenser assembly (8) is connected with a one-way valve assembly (7) through a pipeline, the one-way valve assembly (7) is connected with a liquid storage device (4) through a pipeline, the liquid storage device (4) is connected with a gas-liquid separator (2) through a pipeline, the gas-liquid separator (2) is connected with a first stop valve (10) through a pipeline, the first stop valve (10) is connected with a drying filter (5) through a pipeline, the drying filter (5) is connected with a second stop valve (11) through a pipeline, the second stop valve (11) is connected with an expansion valve (6) through a pipeline, the expansion valve (6) is connected with the one-way valve, the evaporator (3) is connected with the four-way valve (9) through a pipeline, the gas-liquid separator (2) is connected with the four-way valve (9) through a pipeline, and the gas-liquid separator (2) is connected with the compressor (1) through a pipeline.

2. The air-cooled heat pump water chilling unit with the regenerative cycle device according to claim 1, characterized in that: the gas-liquid separator (2) comprises a cylinder body (201), an air outlet pipe (204) and an air inlet pipe (205), wherein an upper flat cover (202) is welded on the upper side of the cylinder body (201), a first valve seat (203) and a second valve seat (206) are welded on the upper side of the upper flat cover (202), the first valve seat (203) and the second valve seat (206) are communicated with the inner cavity of the cylinder body (201), the air outlet pipe (204) and the air inlet pipe (205) penetrate through the upper flat cover (202) and are communicated with the inner cavity of the cylinder body (201), a lower flat cover (209) is welded on the lower side of the cylinder body (201), a supercooling device (208) and a baffle (211) are welded above the lower flat cover (209), the supercooling device (208) and the baffle (211) are arranged on the inner side of the cylinder body (201), the front side of the supercooling device (208) is connected with a pipe connecting seat (207), and the front side of the pipe seat (207, and a fixed angle seat (210) is welded below the outer side of the lower flat cover (209).

3. The air-cooled heat pump water chilling unit with the regenerative cycle device according to claim 2, characterized in that: supercooling device (208) include feed liquor pipe (2081) and drain pipe (2085), head (2086) have all been welded to the rear side of feed liquor pipe (2081) and drain pipe (2085), the upside of feed liquor pipe (2081) and the downside of drain pipe (2085) all are connected with branch liquid pipe (2082), between feed liquor pipe (2081) and left side branch liquid pipe (2082), both sides divide and have all welded a heat exchange tube (2083) between liquid pipe (2082) and between drain pipe (2085) and right side branch liquid pipe (2082), be connected with No. two heat exchange tubes (2084) between feed liquor pipe (2081) and left side branch liquid pipe (2082), the right side divide the upside welding of liquid pipe (2082) to have No. two heads (2087).

4. The air-cooled heat pump water chilling unit with the regenerative cycle device according to claim 2, characterized in that: the central axis of the cylinder body (201), the central axis of the upper flat cover (202) and the central axis of the lower flat cover (209) are collinear.

5. The air-cooled heat pump water chilling unit with the regenerative cycle device according to claim 1, characterized in that: check valve subassembly (7) are including four check valves and two tee bend (71) No. one, and the upside is two all through being connected with tee bend (72) No. two between the check valve and between two check valves of downside, two on the left side the check valve all communicates through pipeline and tee bend (71) No. one on the left side, two on the right side the check valve all communicates through pipeline and tee bend (71) No. one on the right side.