CN111947339A - Flow-variable external heat exchanger device - Google Patents
Flow-variable external heat exchanger device Download PDFInfo
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- CN111947339A CN111947339A CN202010879850.9A CN202010879850A CN111947339A CN 111947339 A CN111947339 A CN 111947339A CN 202010879850 A CN202010879850 A CN 202010879850A CN 111947339 A CN111947339 A CN 111947339A
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- heat exchanger
- thermostat
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- accommodating space
- pipeline
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- 239000007788 liquid Substances 0.000 claims abstract description 41
- 238000003860 storage Methods 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims description 13
- 230000004308 accommodation Effects 0.000 claims description 11
- 239000002775 capsule Substances 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 9
- 239000003507 refrigerant Substances 0.000 abstract description 50
- 230000000694 effects Effects 0.000 abstract description 8
- 238000004378 air conditioning Methods 0.000 description 10
- 238000009826 distribution Methods 0.000 description 7
- 239000012188 paraffin wax Substances 0.000 description 5
- 239000011555 saturated liquid Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000013526 supercooled liquid Substances 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/02—Subcoolers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
- F28D7/1607—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with particular pattern of flow of the heat exchange media, e.g. change of flow direction
Abstract
The invention provides a variable-flow-path heat exchanger device outside a vehicle, which comprises a heat exchanger assembly, a pipeline assembly, a separated thermostat and an integrated liquid storage tank, wherein the heat exchanger assembly comprises a first collecting pipe and a second collecting pipe, the pipeline assembly comprises a first pipeline, the first pipeline is respectively connected with two ends of the first collecting pipe through a first interface and a third interface, one end of the first pipeline close to the first interface is an inlet end, and one end of the first pipeline close to the third interface is an outlet end; the separated thermostat is arranged on the first pipeline and is arranged between the first connector and the third connector, and the separated thermostat is connected with the first collecting pipe through the second connector; the integrated liquid storage tank is connected with the second collecting pipe. The invention realizes the self-adaptive adjustment of the refrigerant flowing direction through the thermostat, greatly improves the heat exchange effect and the practicability of the device, reduces the cost, and has simple structure and convenient operation.
Description
Technical Field
The invention relates to the field of thermal management of new energy automobiles, in particular to an external heat exchanger device with a variable flow.
Background
With the development of automobile technology, the occupancy rate of electric automobiles in vehicles is higher and higher, the heat pump air conditioning technology of electric automobiles is also researched and applied more and more, a plurality of electric automobiles at home and abroad are provided with heat pump air conditioning systems, and an external heat exchanger is used as not only a condenser but also an evaporator in the heat pump air conditioning system and is an important component in the heat pump air conditioning system.
At present, when the heat exchanger outside the vehicle adopted by most of electric vehicle heat pump air-conditioning systems is used as a condenser and an evaporator, the flow distribution is consistent, the heat exchange efficiency is greatly reduced, and the effect of the heat pump air-conditioning system is poor. For example, the parallel flow condenser for the heat pump air conditioning system of the electric vehicle mentioned in patent document CN108036550A needs four interfaces to realize the functions of the condenser and the evaporator, and the flow distribution is consistent, which increases the manufacturing cost of the exterior heat exchanger, and the pipe connection of the heat pump air conditioning system will be complicated.
For another example, patent document CN110793354A discloses a variable flow heat exchanger device suitable for electric vehicles, but the design adopts a bellows and adjusts the flow by pressure, but the bellows needs to be designed separately and installed with certain difficulty; for example, patent document CN108826753A discloses a variable flow path parallel flow heat exchanger, but this design realizes flow path change by manually adjusting a movable mechanism, and is inefficient.
Therefore, there is a need to develop an exterior heat exchanger capable of realizing variable flow distribution of a condenser and an evaporator, which can improve the heat exchange efficiency of the exterior heat exchanger, simplify the pipeline connection of a heat pump air conditioning system, save the cost and improve the heat exchange capacity of the heat pump air conditioning system.
Disclosure of Invention
In view of the shortcomings in the prior art, it is an object of the present invention to provide a variable flow path exterior heat exchanger apparatus.
The invention provides a flow-variable exterior heat exchanger device, which comprises a heat exchanger component, a pipeline component, a separated thermostat and an integrated liquid storage tank, wherein the heat exchanger component is arranged on the exterior of a vehicle;
the heat exchanger assembly comprises a first collecting pipe and a second collecting pipe, the pipeline assembly comprises a first pipeline, the first pipeline is connected with two ends of the first collecting pipe through a first connector and a third connector respectively, one end of the first pipeline close to the first connector is an inlet end, and one end of the first pipeline close to the third connector is an outlet end;
the separated thermostat is arranged on the first pipeline and is arranged between the inlet end and the outlet end, and the separated thermostat is connected with the first collecting pipe through a second connector;
the integrated liquid storage tank is connected with the second collecting pipe.
Preferably, the heat exchanger assembly further comprises a flat tube assembly;
the first collecting pipe and the second collecting pipe are respectively arranged on two sides of the flat pipe assembly and are communicated through the flat pipe assembly.
Preferably, a first edge plate and a second edge plate are arranged in the first collecting pipe;
the first collecting pipe is sequentially divided into a first accommodating space, a second accommodating space and a third accommodating space by the first side plate and the second side plate, wherein the first port, the second port and the third port are respectively connected with the first accommodating space, the second accommodating space and the third accommodating space;
a third edge plate is arranged in the second collecting pipe and divides the second collecting pipe into a fourth accommodating space and a fifth accommodating space;
the integrated liquid storage tank is provided with a fourth interface and a fifth interface, the fourth interface and the fifth interface are respectively connected with a fourth accommodating space and a fifth accommodating space, wherein the length of the fifth interface extending into the integrated liquid storage tank is greater than the length of the fourth interface extending into the integrated liquid storage tank;
the second side plate and the third side plate are symmetrically arranged on two sides of the flat pipe assembly.
Preferably, the split thermostat is switchable between a condenser mode in which the inlet end of the first duct communicates with the first accommodating space and the second accommodating space, respectively, and an evaporator mode;
in the evaporator mode, the inlet end of the first duct communicates with the first accommodating space, and the outlet end of the first duct communicates with the second accommodating space.
Preferably, the flat tube assembly comprises flat tubes and fins;
the quantity of flat pipe is a plurality of, and is a plurality of flat pipe parallel arrangement, the fin sets up between two adjacent flat pipes.
Preferably, install dry package in the integrated liquid storage pot, the one end of dry package is passed through the fourth interface and is connected with fourth accommodation space, the other end of dry package is passed through the fifth interface and is connected with fifth accommodation space.
Preferably, the split thermostat comprises a thermostat housing and a ram assembly;
a sixth accommodating space is arranged inside the thermostat shell, a first flow channel, a second flow channel and a third flow channel which are communicated with the outside are arranged inside the thermostat shell, the first flow channel, the second flow channel and the third flow channel are respectively communicated with the sixth accommodating space, the first flow channel is connected with the inlet end of a first pipeline, the second flow channel is connected with the second accommodating space through a second interface, and the third flow channel is connected with the outlet end of the first pipeline;
the ejector rod assembly is arranged in the sixth accommodating space and comprises a spring, a guide pillar, an ejector rod and an elastic bag body;
the ejector rod comprises an ejector rod protruding part, the ejector rod protruding part comprises a protruding part lower surface, and the spring is sleeved on the ejector rod and arranged between the lower surface of the protruding part and the inner wall of the thermostat shell;
the thermostat comprises a thermostat shell, a push rod, a first runner, a guide post and an elastic bag body, wherein the push rod is arranged in the thermostat shell, the push rod is provided with a seventh containing space inside, the push rod is provided with a push rod through hole, the seventh containing space is communicated with the outside through the push rod through hole, a clamping groove is fixed inside the thermostat shell and is arranged in the first runner, one end of the guide post is installed in the clamping groove, and the other end of the guide post penetrates through the push rod through hole to extend into the seventh containing space and is in contact with the elastic bag body.
Preferably, a sealing block is arranged inside the thermostat shell, the ejector rod can move close to the third flow channel in the condenser mode, and one end of the ejector rod close to the third flow channel can be in sealing fit with the sealing block;
the ejector rod protruding portion comprises a protruding portion, one end, close to the first flow channel, of the sixth containing space is of a conical structure, the ejector rod can move close to the first flow channel in an evaporator mode, and the protruding portion can be attached to the inner wall of the thermostat shell in a sealing mode.
Preferably, the first pipeline is a split component, one side of the thermostat shell close to the first flow channel is detachably connected with the first pipeline, one side of the thermostat shell close to the third flow channel is detachably connected with the first pipeline, and one side of the thermostat shell close to the second flow channel is detachably connected with the second interface.
Preferably, the integrated liquid storage tank is mounted at the upper end of the heat exchanger assembly or at the lower end of the heat exchanger assembly.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention realizes the adjustment of the circulation direction of the refrigerant through the thermostat, greatly improves the heat exchange effect between the condenser and the evaporator, simplifies the structure of the pipeline and improves the practicability of the device.
2. The heat exchanger has one inlet and one outlet, and the inlet is always an inlet and the outlet is always an outlet no matter the heat exchanger is used as a condenser or an evaporator, so that the number of interfaces is reduced, the complexity of pipeline connection is simplified, the manufacturing cost is reduced, the structure is simple, and the operation is convenient.
3. According to the invention, the switching of the refrigerant flow is realized through the internal structure of the thermostat, the problem that the operation of changing the flow is controlled electrically or pneumatically in the prior art is solved, the energy consumption is saved, and the method is scientific and reasonable.
4. The thermostat can be integrated in an external pipeline, and the external pipeline can be connected with the interface of the heat exchanger assembly through various detachable structures such as threads and the like, so that the thermostat is convenient to maintain or replace.
5. The structural arrangement of the integrated liquid storage tank ensures that the condenser is a supercooling condenser and ensures that the outlet is supercooled refrigerant liquid.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic structural view of example 1 of the present invention;
FIG. 2 is a schematic view showing a flow path of a refrigerant as a condenser in embodiment 1 of the present invention;
FIG. 3 is a schematic view showing a flow path of a refrigerant when used as an evaporator in embodiment 1 of the present invention;
FIG. 4 is a schematic diagram of the split thermostat in condenser mode.
FIG. 5 is a schematic structural view of example 2 of the present invention;
FIG. 6 is a schematic view showing a flow path of a refrigerant as a condenser in embodiment 2 of the present invention;
fig. 7 is a schematic view showing a flow path of refrigerant when used as an evaporator in embodiment 2 of the present invention.
The figures show that:
Thermostat housing 26 of integrated receiver 14 of piping component 2
The fourth port 16 of the first inlet assembly 4 is connected to the first flow passage 28
Clamping groove 34 of second accommodating space 22 of second collecting pipe 10
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The invention provides a flow-variable heat exchanger device outside a vehicle, which comprises a heat exchanger component 1, a pipeline component 2, a separated thermostat 3 and an integrated liquid storage tank 14, wherein the integrated liquid storage tank 14 is arranged at the upper end of the heat exchanger component 1 or at the lower end of the heat exchanger component 1; the outlet is liquid, so that the required volume is small; when the evaporator is used, the flow distribution with less first flow and more second flow is realized, and when the evaporator is used, the inlet is mainly liquid, so that the required volume is small; the outlet is mainly gas, needs a lot of volumes, has improved the heat transfer effect as condenser and evaporimeter greatly.
The separate thermostat 3 can be integrated in an external pipeline, and the external pipeline can be connected with a connector of a heat exchanger through threads or a pressing plate, so that the thermostat is replaceable and convenient to disassemble. The collecting pipe in the heat exchanger does not need to be specially designed, only an interface is added in the middle of the collecting pipe, and the heat exchanger is vertically arranged and designed with a better condensed water removing function and a lower refrigerant pressure drop; the integrated receiver tank 14 allows the condenser to be a subcooled condenser, ensuring that the outlet is subcooled refrigerant liquid. The heat exchanger has one inlet and one outlet, and the inlet is always an inlet and the outlet is always an outlet no matter the heat exchanger is a condenser or an evaporator, so that the number of interfaces is reduced, and the connection of pipelines is simplified. The invention is illustrated in detail below by means of two examples.
Example 1:
the heat exchanger assembly 1 comprises a first collecting pipe 9 and a second collecting pipe 10, the pipeline assembly 2 comprises a first pipeline 20, the first pipeline 20 is connected with two ends of the first collecting pipe 9 through a first connector 6 and a third connector 8 respectively, wherein one end, close to the first connector 6, of the first pipeline 20 is an inlet end, one end, close to the third connector 8, of the first pipeline 20 is an outlet end, refrigerant flows in from the inlet end of the first pipeline 20 and flows out from the outlet end of the first pipeline 20, the separated thermostat 3 is installed on the first pipeline 20 and is arranged between the first connector 6 and the third connector 8, the separated thermostat 3 is connected with the first collecting pipe 9 through a second connector 7, the integrated liquid storage tank 14 is connected with the second collecting pipe 10, and the integrated liquid storage tank 14 is installed at the lower end of the heat exchanger assembly 1.
Specifically, as shown in fig. 1, the heat exchanger assembly 1 further includes a flat tube assembly, and the first header 9 and the second header 10 are respectively disposed on two sides of the flat tube assembly and are communicated with each other through the flat tube assembly. The flat tube component comprises flat tubes 18 and fins 19, the number of the flat tubes 18 is multiple, the flat tubes 18 are arranged in parallel, the fins 19 are arranged between two adjacent flat tubes 18 and connected with the flat tubes 18, heat of the flat tubes 18 is transferred to the fins 19, and the fins 19 increase the heat exchange area and can improve the heat exchange effect of the heat exchanger.
Specifically, as shown in fig. 1, a first side plate 11 and a second side plate 12 are disposed in the first header 9, the first collecting pipe 9 is divided into a first accommodating space 21, a second accommodating space 22 and a third accommodating space 23 by the first side plate 11 and the second side plate 12 in sequence, wherein, the first interface 6, the second interface 7 and the third interface 8 are respectively connected with the first accommodating space 21, the second accommodating space 22 and the third accommodating space 23, a third edge plate 13 is arranged in the second collecting pipe 10, the third edge plate 13 divides the second collecting pipe 10 into a fourth accommodating space 24 and a fifth accommodating space 25, the integrated liquid storage tank 14 is provided with a fourth interface 16 and a fifth interface 17, the fourth interface 16 and the fifth interface 17 are respectively connected with a fourth accommodating space 24 and a fifth accommodating space 25, wherein the length of the fifth interface 17 extending into the integrated liquid storage tank 14 is greater than the length of the fourth interface 16 extending into the integrated liquid storage tank 14. The second and third side plates 12, 13 are arranged symmetrically on both sides of the flat tube assembly, so that the flat tubes 18 connected to the first and second receiving spaces 21, 22 are connected to the fourth receiving space 24.
Specifically, a drying bag 15 is installed in the integrated liquid storage tank 14, one end of the drying bag 15 is connected with the fourth accommodating space 24 through the fourth interface 16, and the other end of the drying bag 15 is connected with the fifth accommodating space 25 through the fifth interface 17.
Specifically, as shown in fig. 1 and 4, the separate thermostat (3) comprises a thermostat housing (26) and a push rod assembly, and the thermostat housing 26 is preferably of a split structure so as to be convenient for maintenance and assembly of the push rod assembly.
Further, as shown in fig. 1 and 4, a sixth accommodating space (27) is provided inside the thermostat housing (26), a first flow passage (28), a second flow passage (29), and a third flow passage (30) which are communicated with the outside are provided inside the thermostat housing (26), the first flow passage (28), the second flow passage (29), and the third flow passage (30) are respectively communicated with the sixth accommodating space (27), wherein the first flow passage (28) is connected with an inlet end of the first pipeline (20), the second flow passage (29) is connected with the second accommodating space (22) through the second connector (7), the third flow passage (30) is connected with an outlet end of the first pipeline (20), and the ejector rod assembly is installed in the sixth accommodating space (27).
Furthermore, as shown in fig. 1 and 4, the push rod assembly comprises a spring (31), a guide post (33), a push rod (35) and an elastic capsule, the push rod (35) comprises a push rod protrusion (32), the push rod protrusion (32) comprises a protrusion lower surface, and the spring (31) is sleeved on the push rod (35) and is arranged between the protrusion lower surface and the inner wall of the thermostat housing (26); the thermostat is characterized in that a seventh containing space is arranged inside the ejector rod (35), an ejector rod through hole is formed in the ejector rod (35), the seventh containing space is communicated with the outside through the ejector rod through hole, a clamping groove (34) is fixed inside the thermostat shell (26), the clamping groove (34) is arranged in the first flow channel (28), one end of the guide post (33) is installed in the clamping groove (34), and the other end of the guide post (33) penetrates through the ejector rod through hole to extend into the seventh containing space and is in contact with an elastic capsule body arranged in the seventh containing space.
In the invention, a sealing block (36) is arranged inside the thermostat shell (26), under a condenser mode, the temperature of refrigerant is higher, for example, more than 25 ℃, paraffin is preferably filled in the elastic bag body, when the refrigerant with higher temperature passes through a sixth accommodating space (27), heat is transferred to the elastic bag body through a push rod (35), the paraffin is melted, the volume of the elastic bag body is increased, the elastic bag body extrudes a guide post (33), the guide post (33) is extruded and then transfers extrusion force to a clamping groove (34), the clamping groove (34) is fixed, the elastic bag body drives the push rod (35) to move away from a first flow channel (28) and close to a third flow channel (30) under the driving of the reaction force of the clamping groove (34), at the moment, a spring (31) is compressed and shortened, the first flow channel (28) is communicated with the second flow channel (29), the second flow channel (29) is not communicated with the third flow channel (30), and one end of the, the third flow passage 30 is sealed, no fluid passes through, and the refrigerant flows from the first flow passage 28, passes through the sixth receiving space 27, and flows out of the second flow passage 29.
Further, when the ejector rod assembly operates in the evaporator mode, the temperature of the refrigerant is low, for example, less than 15 ℃, when the refrigerant with low temperature passes through the sixth accommodation space (27), the temperature is transmitted to the elastic capsule through the ejector rod 32, paraffin is solidified, and the volume of the elastic capsule is reduced, at this time, a gap is generated between the elastic capsule and the guide post 33 in the seventh accommodation space, at this time, the compressed spring 31 can drive the ejector rod 35 to move close to the first flow passage 28 under the action of the rebound force, at this time, the first flow passage 28 is not communicated with the second flow passage 29, and the second flow passage 29 is communicated with the third flow passage 30. The invention utilizes the difference of the temperature of the refrigerant, the refrigerant at the inlet is high-temperature gas when the refrigerant is used as a condenser, and the refrigerant at the inlet is low-temperature gas-liquid two-phase when the refrigerant is used as an evaporator, thereby realizing the adjustment of the circulation direction of the thermostat, changing the circulation direction of the refrigerant and realizing the conversion of the circulation channel of the heat exchanger. The ejector rod protruding portion (32) comprises a protruding portion, one end, close to the first flow channel (28), of the sixth containing space (27) is of a conical structure, the ejector rod (35) can move close to the first flow channel (28) in an evaporator mode, the protruding portion can be in sealing fit with the inner wall of the thermostat shell (26), sealing of the first flow channel (28) is achieved, and fluid does not flow through the first flow channel (28).
Specifically, when the split thermostat 3 is in the condenser mode, the inlet end of the first pipe 20 is respectively communicated with the first accommodating space 21 and the second accommodating space 22, and the flow route of the refrigerant of the heat exchanger device in the condenser mode realizes the flow route distribution mode that the inlet is gas, the required volume is large, the outlet is liquid and the refrigerant is required to be small when the volume is small; in the evaporator mode, the inlet end of the first pipeline 20 is communicated with the first accommodating space 21, the outlet end of the first pipeline 20 is communicated with the second accommodating space 22, when the evaporator is used, an inlet is mainly liquid, the required volume is small, an outlet is mainly gas, the required volume is large, and the improvement of the heat exchange efficiency is facilitated. The heat exchange effect of the heat exchanger as a condenser and an evaporator is greatly improved by adjusting the flow path of the refrigerant with variable flow.
Specifically, first pipeline 20 is the part of separating, thermostat housing 26 is close to one side of first runner 28 and is connected for dismantling with first pipeline 20, thermostat housing 26 is close to one side of third runner 30 and is connected for dismantling with first pipeline 20, thermostat housing 26 is close to one side of second runner 29 and is connected for dismantling with second interface 7, all adopts to dismantle with the pipeline that links to each other through thermostat housing 26 and is connected, can be convenient for disconnect-type thermostat 3 dismantles and changes, convenient maintenance.
Specifically, first inlet subassembly 4 is installed to the entrance end of first pipeline 20, first outlet subassembly 5 is installed to the exit end of first pipeline 20, and suitable structure can both be selected according to the application scene of reality to first inlet subassembly 4, first outlet subassembly 5, for installation and dismantlement facilitate, also can reach the effect of matching installation and seal installation simultaneously.
Example 2:
as shown in fig. 5, 6 and 7, as a variation of embodiment 1, the integrated liquid storage tank 14 is installed at the upper end of the heat exchanger assembly 1, and still realizes the distribution mode of the flow path of the refrigerant when the inlet is gas, the required volume is large, the outlet is liquid, and the required volume is small, when the heat exchanger is used as an evaporator, the inlet is mainly liquid, the required volume is small, the outlet is mainly gas, and the required volume is large, which is beneficial to improving the heat exchange efficiency. The heat exchanger also greatly improves the heat exchange effect of the heat exchanger as a condenser and an evaporator through the flow path of the refrigerant with the variable flow path.
The variable-flow parallel flow heat exchanger aims to be suitable for the working conditions of an air conditioner during working, so that the efficiency of the heat exchanger is optimal under the working conditions of changing, the distribution of a refrigerant is optimized by adopting a changing flow, and a flow path with low heat exchange efficiency of the refrigerant in a flat tube is reduced, so that the whole area of the heat exchanger is utilized at the highest efficiency, and the purpose of improving the performance of the heat exchanger is achieved.
Taking the embodiment 1 as an example, the working principle of the invention is as follows:
fig. 1 shows a variable flow path exterior heat exchanger assembly of the present invention, fig. 2 shows an embodiment of the heat exchanger as a condenser, in which a high-temperature and high-pressure refrigerant gas (e.g. greater than 25 ℃) flows from an inlet end of a first pipe 20, one part of the high-temperature and high-pressure refrigerant gas sequentially flows into a first collecting pipe 9 through the first pipe 20 and a first connector 6, and the other part of the high-temperature and high-pressure refrigerant gas flows into a separate thermostat 3 through the first pipe 20 and the first connector 6, the high-temperature refrigerant gas melts a material (e.g. paraffin) in an elastic bladder inside the separate thermostat 3 to increase the volume of the elastic bladder, so as to drive a ram 35 in the separate thermostat 3 to compress a spring 31, a first flow passage 28 and a second flow passage 29 of the separate thermostat 3 are communicated, the refrigerant gas is allowed to flow into a second receiving space 22 in the first collecting pipe 9 through the thermostat 3 and the second flow passage 29 and a third flow passage 30 in the separate, sealing is achieved to prevent refrigerant from flowing to the outlet end of the first tube 20. Therefore, the number of the first flow flat tubes 18 through which refrigerant gas flows is large (the first flow is the flat tube 18 on the right side of the second side plate 12 in fig. 1), the refrigerant coming out of the first flow enters the integrated liquid storage tank 14 through the fourth interface 16 (the position is relatively high) after releasing heat and passes through the fourth accommodating space 24 in the second collecting pipe 10, the drying bag 15 dries the refrigerant in the integrated liquid storage tank 14, the position of the fifth interface 17 is relatively low, the refrigerant coming out of the integrated liquid storage tank 14 through the fifth interface 17 is saturated liquid, the saturated liquid coming out is changed into supercooled liquid by heat release of the second flow flat tubes 18 (the second flow is the flat tube 18 on the left side of the second side plate 12 in fig. 1), and finally the refrigerant flows out of the outlet end of the first pipeline 20 through the third interface 8. Even if the opening and closing of the thermostat are delayed, the heat exchanger is always circulated, and the problem that the heat exchanger does not work does not exist.
Fig. 3 shows an embodiment of the heat exchanger as an evaporator. A refrigerant gas of a low temperature (e.g., less than 15 c) flows from the inlet end of the first tube 20 into the first accommodation space 21 through the first joint 6. The low-temperature refrigerant gas enables the material (such as paraffin wax material) inside the elastic capsule body in the separate thermostat 3 to be solidified, so that the volume of the elastic capsule body is reduced, and then a gap is generated between the elastic capsule body and the guide post 33, at the moment, the compressed spring 31 can drive the ejector rod 35 to move close to the first flow channel 28 under the action of the resilience force, the first flow channel 28 in the separate thermostat 3 is closed, namely, the inlet end of the first pipeline 20 is not communicated with the second connector 7, the refrigerant is not allowed to flow through the separate thermostat 3, the third flow channel 30 of the separate thermostat 3 is opened, namely, the outlet end of the first pipeline 20 is communicated with the second connector 7. Therefore, the number of the flat tubes 18 of the first flow path through which the refrigerant flows is small (for example, the flat tube 18 on the right side of the first side plate 11 in fig. 1), a part of the refrigerant which passes through the fourth accommodating space 24 after absorbing heat from the refrigerant flowing from the first flow path enters the integrated liquid storage tank 14 through the fourth port 16 (the position is relatively high), the drying bag 15 dries the refrigerant in the integrated liquid storage tank 14, the second port 17 is relatively low, the refrigerant flowing from the liquid storage tank is saturated liquid, the saturated liquid flowing out of the integrated liquid storage tank absorbs heat through the flat tube 18 of the second flow path part (the flat tube 18 on the left side of the second side plate 12 in fig. 1), the other part of the refrigerant enters the flat tube 12 between the first side plate 11 and the second side plate 12 to evaporate and absorb heat, and the part of the refrigerant flows out of the second port 7 and the split thermostat 3 through the.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A flow-variable external heat exchanger device is characterized by comprising a heat exchanger component (1), a pipeline component (2), a separated thermostat (3) and an integrated liquid storage tank (14);
the heat exchanger assembly (1) comprises a first collecting pipe (9) and a second collecting pipe (10), the pipeline assembly (2) comprises a first pipeline (20), the first pipeline (20) is connected with two ends of the first collecting pipe (9) through a first connector (6) and a third connector (8) respectively, one end, close to the first connector (6), of the first pipeline (20) is an inlet end, and one end, close to the third connector (8), of the first pipeline (20) is an outlet end;
the separated thermostat (3) is arranged on the first pipeline (20) and is arranged between the inlet end and the outlet end, and the separated thermostat (3) is connected with the first collecting pipe (9) through a second connector (7);
the integrated liquid storage tank (14) is connected with the second collecting pipe (10).
2. The variable-flow, offboard heat exchanger device according to claim 1, characterized in that said heat exchanger assembly (1) further comprises a flat tube assembly;
the first collecting pipe (9) and the second collecting pipe (10) are respectively arranged on two sides of the flat pipe assembly and are communicated through the flat pipe assembly.
3. Variable flow offboard heat exchanger device according to claim 2, characterized in that said first header (9) has disposed therein a first edge plate (11) and a second edge plate (12);
the first collecting pipe (9) is sequentially divided into a first accommodating space (21), a second accommodating space (22) and a third accommodating space (23) by the first side plate (11) and the second side plate (12), wherein the first connector (6), the second connector (7) and the third connector (8) are respectively connected with the first accommodating space (21), the second accommodating space (22) and the third accommodating space (23);
a third edge plate (13) is arranged in the second collecting pipe (10), and the second collecting pipe (10) is divided into a fourth accommodating space (24) and a fifth accommodating space (25) by the third edge plate (13);
a fourth interface (16) and a fifth interface (17) are arranged on the integrated liquid storage tank (14), the fourth interface (16) and the fifth interface (17) are respectively connected with a fourth accommodating space (24) and a fifth accommodating space (25), wherein the length of the fifth interface (17) extending into the integrated liquid storage tank (14) is greater than the length of the fourth interface (16) extending into the integrated liquid storage tank (14);
the second side plate (12) and the third side plate (13) are symmetrically arranged on two sides of the flat pipe assembly.
4. A variable-flow offboard heat exchanger device according to claim 3, characterized in that said split thermostat (3) is switchable between a condenser mode, in which the inlet ends of said first duct (20) communicate with a first housing space (21), respectively a second housing space (22), and an evaporator mode;
in the evaporator mode, the inlet end of the first duct (20) communicates with the first accommodation space (21), and the outlet end of the first duct (20) communicates with the second accommodation space (22).
5. A variable-flow offboard heat exchanger device according to claim 2, characterized in that said flat tube assembly comprises flat tubes (18) and fins (19);
the quantity of flat pipe (13) is a plurality of, and is a plurality of flat pipe (13) parallel arrangement, fin (14) set up between two adjacent flat pipe (13).
6. The variable-flow exterior heat exchanger device of claim 3, wherein a drying bag (15) is installed in the integrated liquid storage tank (14), one end of the drying bag (15) is connected with a fourth accommodating space (24) through a fourth interface (16), and the other end of the drying bag (15) is connected with a fifth accommodating space (25) through a fifth interface (17).
7. The variable-flow offboard heat exchanger device according to claim 3, wherein said split thermostat (3) comprises a thermostat housing (26) and a ram assembly;
a sixth accommodating space (27) is formed in the thermostat shell (26), a first flow passage (28), a second flow passage (29) and a third flow passage (30) which are communicated with the outside are formed in the thermostat shell (26), the first flow passage (28), the second flow passage (29) and the third flow passage (30) are respectively communicated with the sixth accommodating space (27), the first flow passage (28) is connected with the inlet end of the first pipeline (20), the second flow passage (29) is connected with the second accommodating space (22) through a second connector (7), and the third flow passage (30) is connected with the outlet end of the first pipeline (20);
the ejector rod assembly is arranged in the sixth accommodating space (27) and comprises a spring (31), a guide pillar (33), an ejector rod (35) and an elastic capsule body;
the ejector rod (35) comprises an ejector rod protruding part (32), the ejector rod protruding part (32) comprises a protruding part lower surface, and the spring (31) is sleeved on the ejector rod (35) and arranged between the lower surface of the protruding part and the inner wall of the thermostat shell (26);
the thermostat is characterized in that a seventh containing space is arranged inside the ejector rod (35), an ejector rod through hole is formed in the ejector rod (35), the seventh containing space is communicated with the outside through the ejector rod through hole, a clamping groove (34) is fixed inside the thermostat shell (26), the clamping groove (34) is arranged in the first flow channel (28), one end of the guide post (33) is installed in the clamping groove (34), and the other end of the guide post (33) penetrates through the ejector rod through hole to extend into the seventh containing space and is in contact with an elastic capsule body arranged in the seventh containing space.
8. The variable-flow external heat exchanger device of claim 7, wherein the thermostat housing (26) is provided with a sealing block (36) inside, and in the condenser mode, the ejector rod (35) is movable close to the third flow channel (30), and one end of the ejector rod (35) close to the third flow channel (30) is in sealing fit with the sealing block (36);
the ejector rod protruding portion (32) comprises a protruding portion, one end, close to the first flow channel (28), of the sixth containing space (27) is of a conical structure, the ejector rod (35) can move close to the first flow channel (28) in the evaporator mode, and the protruding portion can be attached to the inner wall of the thermostat shell (26) in a sealing mode.
9. The variable-flow external heat exchanger device of claim 8, wherein the first pipe (20) is a separate component, the thermostat housing (26) is detachably connected to the first pipe (20) at a side close to the first flow passage (28), the thermostat housing (26) is detachably connected to the first pipe (20) at a side close to the third flow passage (30), and the thermostat housing (26) is detachably connected to the second port (7) at a side close to the second flow passage (29).
10. Variable flow offboard heat exchanger device according to claim 1, characterized in that said integrated reservoir (14) is mounted at the upper end of the heat exchanger assembly (1) or at the lower end of the heat exchanger assembly (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010879850.9A CN111947339A (en) | 2020-08-27 | 2020-08-27 | Flow-variable external heat exchanger device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010879850.9A CN111947339A (en) | 2020-08-27 | 2020-08-27 | Flow-variable external heat exchanger device |
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| CN111947339A true CN111947339A (en) | 2020-11-17 |
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| CN202010879850.9A Pending CN111947339A (en) | 2020-08-27 | 2020-08-27 | Flow-variable external heat exchanger device |
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| CN203258933U (en) * | 2012-03-30 | 2013-10-30 | 艾默生环境优化技术有限公司 | Condensing unit |
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