CN113310209A - Integrated core body for liquid heating and refrigerating heat exchange and heating and refrigerating heat exchange assembly - Google Patents
Integrated core body for liquid heating and refrigerating heat exchange and heating and refrigerating heat exchange assembly Download PDFInfo
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- CN113310209A CN113310209A CN202110727959.5A CN202110727959A CN113310209A CN 113310209 A CN113310209 A CN 113310209A CN 202110727959 A CN202110727959 A CN 202110727959A CN 113310209 A CN113310209 A CN 113310209A
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- cooling liquid
- flow channel
- refrigerant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/121—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium using electric energy supply
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
- B60H1/2221—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters arrangements of electric heaters for heating an intermediate liquid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/02—Casings; Cover lids; Ornamental panels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1818—Arrangement or mounting of electric heating means
- F24H9/1827—Positive temperature coefficient [PTC] resistor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H2250/00—Electrical heat generating means
- F24H2250/04—Positive or negative temperature coefficients, e.g. PTC, NTC
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides an integrated core body for liquid heating and refrigerating heat exchange and a heating and refrigerating heat exchange assembly, which solve the technical problems that an existing heater and a condenser are two relatively independent assemblies, the heater and the condenser are communicated through a pipeline, the occupied space is large, and the pipeline arrangement and communication are difficult; the liquid flow passage unit is provided with a refrigerant flow passage unit and a cooling liquid flow passage unit which are separated from each other; the first heat exchange area is provided with a refrigerant flow channel unit and a first cooling liquid flow channel unit which are connected in a stacking mode from top to bottom, the second heat exchange area is provided with a second cooling liquid flow channel unit and a PTC heating unit which are connected in a stacking mode from top to bottom, and the first cooling liquid flow channel unit is communicated with the second cooling liquid flow channel unit.
Description
Technical Field
The application relates to a heating and refrigerating heat exchange device for an electric automobile or a new energy automobile, in particular to an integrated core body for liquid heating and refrigerating heat exchange and a heating and refrigerating heat exchange assembly.
Background
In new energy automobile (especially electric automobile) field, member cabin and drive battery all have the heating demand when ambient temperature is lower, it has the refrigeration demand again to go the temperature when higher in inside, the heating demand of the two can all choose PTC heating (or the heater of other forms) to satisfy, and the satisfaction of refrigeration demand is different, the passenger cabin cools off the air through the air conditioner and reaches the cooling effect, power battery then cools down the coolant liquid through the refrigerant via the giller (being the cooler), rethread coolant liquid carries out the heat transfer with power battery, the purpose of cooling has been reached. At present, all heaters and killers on the market are two relatively independent assemblies, and the heaters and the killers are communicated through a pipeline according to a heat management system framework, so that the space occupied by the method is large, and the pipeline arrangement and the communication are difficult.
Disclosure of Invention
The invention aims to solve the technical defects and provides an integrated core body for liquid heating and refrigerating heat exchange and a heating and refrigerating heat exchange assembly.
Therefore, the invention provides an integrated core body for liquid heating and refrigerating heat exchange, which is provided with a liquid flow channel unit, a PTC heating unit, a first heat exchange area and a second heat exchange area, wherein the first heat exchange area and the second heat exchange area are stacked and connected from top to bottom; the liquid flow channel unit is provided with a refrigerant flow channel unit and a cooling liquid flow channel unit which are separated from each other, the cooling liquid flow channel unit is provided with a first cooling liquid flow channel unit and a second cooling liquid flow channel unit, and the first cooling liquid flow channel unit is communicated with the second cooling liquid flow channel unit; the refrigerant flow channel unit is used for circulating a refrigerant, and the cooling liquid flow channel unit is used for circulating cooling liquid; the first heat exchange area is provided with a refrigerant flow channel unit and a first cooling liquid flow channel unit, and the refrigerant flow channel unit and the first cooling liquid flow channel unit are stacked and connected from top to bottom; the second heat exchange area is provided with a PTC heating unit and a second cooling liquid flow channel unit, and the PTC heating unit and the second cooling liquid flow channel unit are stacked and connected from top to bottom.
Preferably, when the number of the first coolant flow path unit, the second coolant flow path unit, the refrigerant flow path unit, and the PTC heating unit is plural, respectively; in the first heat exchange zone, the refrigerant flow channel units and the first cooling liquid flow channel units are sequentially and alternately stacked and connected from top to bottom, adjacent refrigerant flow channel units are communicated in parallel, and adjacent first cooling liquid flow channel units are communicated in series; in the second heat exchange area, the PTC heating units and the second cooling liquid flow channel units are sequentially and alternately stacked and connected from top to bottom, and adjacent second cooling liquid flow channel units are communicated in series.
Preferably, the invention is provided with a plurality of metal shells, and the metal shells are all of cover-shaped structures with downward openings; the metal shells are stacked and connected from top to bottom, and a relatively closed cavity is formed between every two adjacent metal shells; in the first heat exchange zone, one or more cavities are arranged from top to bottom at intervals and are first cooling liquid flow channels, each first cooling liquid flow channel and metal shells which are adjacent to the first cooling liquid flow channel from top to bottom form a first cooling liquid flow channel unit, the cavity between every two adjacent first cooling liquid flow channels is a refrigerant flow channel, and the refrigerant flow channel and the metal shells which are adjacent to the refrigerant flow channel from top to bottom form a refrigerant flow channel unit; in the second heat exchange area, one or more cavities are arranged from top to bottom as second cooling liquid flow channels, each second cooling liquid flow channel and the metal shells adjacent to the second cooling liquid flow channel form a second cooling liquid flow channel unit, the cavity between every two adjacent second cooling liquid flow channels is a heating cavity, and a PTC heating unit is arranged in the heating cavity; the metal shell adjacent to the first cooling liquid flow channel, the second cooling liquid flow channel and the refrigerant flow channel is respectively provided with a channel for the heat exchange medium to enter and exit; the cooling liquid flow channel is provided with a first cooling liquid flow channel and a second cooling liquid flow channel, and the refrigerant flow channel, the cooling liquid flow channel and the heating cavity are isolated from each other and are not communicated with each other.
Preferably, each refrigerant flow channel is respectively provided with a refrigerant inlet and a refrigerant outlet; the refrigerant inlet of the refrigerant flow passage positioned above is communicated with the refrigerant inlet of the refrigerant flow passage positioned below, the refrigerant outlet of the refrigerant flow passage positioned above is communicated with the refrigerant outlet of the refrigerant flow passage positioned below, and the refrigerant flow passages in the first heat exchange area are communicated in parallel.
Preferably, each refrigerant flow channel which is connected in parallel and communicated is respectively provided with a supply communication hole and an outlet communication hole; the refrigerant inlet of the refrigerant flow channel positioned above is upwards raised, the inlet communication hole of the refrigerant flow channel positioned below is downwards depressed, and the two refrigerant flow channels are communicated and are in edge sealing connection; the refrigerant outlet of the refrigerant flow channel positioned at the lower part is upwards convex, the outlet communication hole of the refrigerant flow channel positioned at the upper part is downwards concave, and the refrigerant outlet and the outlet communication hole are communicated and connected in a sealing way.
Preferably, each first cooling liquid channel is respectively provided with a first cooling liquid inlet and a first cooling liquid outlet; the first cooling liquid inlet of the first cooling liquid flow channel positioned above is communicated with the first cooling liquid outlet of the first cooling liquid flow channel positioned below; each second cooling liquid flow channel is provided with a second cooling liquid inlet and a second cooling liquid outlet respectively, and two adjacent second cooling liquid flow channels are arranged, wherein the second cooling liquid inlet of the second cooling liquid flow channel positioned above is communicated with the second cooling liquid outlet of the second cooling liquid flow channel positioned below; a first cooling liquid inlet of a first cooling liquid flow channel positioned at the bottommost part of the first heat exchange area is communicated with a second cooling liquid outlet of a second cooling liquid flow channel positioned at the topmost part of the second heat exchange area; the cooling liquid flow channel formed by the first cooling liquid flow channel and the second cooling liquid flow channel is zigzag-shaped.
Preferably, the first cooling liquid inlet of the first cooling liquid flow channel positioned above is concave downwards, the first cooling liquid outlet of the first cooling liquid flow channel positioned below is convex upwards, and the edges of the two first cooling liquid flow channels are connected in a sealing way; and the second cooling liquid inlet of the second cooling liquid flow channel positioned above is downwards sunken, the second cooling liquid outlet of the second cooling liquid flow channel positioned below is upwards raised, and the edges of the two are in sealing connection.
Preferably, the invention is also provided with a cooling liquid inlet pipe, a cooling liquid outlet pipe, a refrigerant inlet pipe and a refrigerant outlet pipe; the cooling liquid inlet pipe is arranged below the bottommost metal shell, and the cooling liquid outlet pipe, the refrigerant liquid inlet pipe and the refrigerant liquid outlet pipe are arranged above the topmost metal shell; one end of the cooling liquid inlet pipe is communicated with a second cooling liquid inlet of the second cooling liquid channel positioned at the bottommost layer, and one end of the cooling liquid outlet pipe is communicated with a first cooling liquid outlet of the first cooling liquid channel positioned at the topmost layer; one end of the refrigerant liquid inlet pipe is communicated with the refrigerant inlet of the refrigerant flow channel positioned at the topmost layer, and one end of the refrigerant liquid inlet pipe is communicated with the refrigerant outlet of the refrigerant flow channel positioned at the topmost layer.
Preferably, the metal shell is made of aluminum and is manufactured by a stamping process.
A liquid heating and refrigerating heat exchange assembly is provided with a box-shaped shell and an integrated core body which is arranged in the box-shaped shell and used for liquid heating and refrigerating heat exchange.
The invention has the beneficial effects that: the invention provides an integrated core body for liquid heating and refrigerating heat exchange and a heating and refrigerating heat exchange assembly, which are provided with a first heat exchange area and a second heat exchange area, wherein the first heat exchange area and the second heat exchange area are stacked and connected from top to bottom, the first heat exchange area is stacked and connected with a first cooling liquid flow channel unit from top to bottom through a refrigerant flow channel unit, and the second heat exchange area is stacked and connected with a PTC heating unit from top to bottom through a second cooling liquid flow channel unit. The refrigerant flow passage unit is used for circulating refrigerant, and the first cooling liquid flow passage unit and the second cooling liquid flow passage unit are used for circulating cooling liquid. The PTC heating unit supplies heat to its adjacent second coolant flow path unit, and the refrigerant flow path unit absorbs or releases heat from its adjacent first coolant flow path unit. The invention has multiple functions, reduces the existing arrangement space, saves the number of connecting pipelines, occupies small space and achieves the aim that one assembly has two functions of heating and refrigerating. There are mainly three ways:
(1) when the PTC heating unit works, the heat absorption temperature of the cooling liquid in the second cooling liquid flow channel unit is increased, and heat is provided for the outside through the first cooling liquid flow channel unit, so that the purpose of heating the outside is achieved;
(2) on the basis of the work of the PTC heating unit, the refrigerant flow channel unit is started, and the refrigerant in the refrigerant flow channel unit further absorbs the heat from the first cooling liquid flow channel unit and serves as another passage to provide heat outwards, so that the heat exchange efficiency of the PTC heating unit is improved; the refrigerant flow channel unit is fully utilized, and the double channels provide heat for the outside, so that the purpose of remarkably improving the outside heating effect is achieved;
(3) the PTC heating unit stops working, the refrigerant flow channel unit is started, heat is absorbed from the first cooling liquid flow channel unit, the temperature of cooling liquid in the first cooling liquid flow channel unit is reduced, and the purpose of external refrigeration is achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a perspective view of an integrated core for liquid heating and refrigeration heat exchange according to the present invention;
FIG. 2 is a schematic structural view (taken down from the coolant inlet and outlet pipes) in perspective from one of the views shown in FIG. 1;
FIG. 3 is a schematic structural view in perspective (taken down from the refrigerant inlet and outlet pipes) of another view of the cross-section shown in FIG. 1;
fig. 4 is a schematic structural view of the exploded view shown in fig. 1.
Reference numerals: a PTC heating unit; 2. a first heat transfer zone; 3. a second heat transfer zone; 4. a refrigerant flow path unit; 5. a first coolant flow channel unit; 6. a second coolant flow channel unit; 7. a metal housing; 8. a first coolant flow channel; 9. a refrigerant flow passage; 10. a second coolant flow channel; 11. a heating cavity; 12. a refrigerant inlet; 13. a refrigerant outlet; 14. an inlet communication hole; 15. an outlet communication hole; 16. a first coolant inlet; 17. a first coolant outlet; 18. a second coolant inlet; 19. a second coolant outlet; 20. a coolant inlet pipe; 21. a coolant outlet pipe; 22. a refrigerant inlet pipe; 23. a refrigerant outlet pipe.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. The method used in the invention is a conventional method if no special provisions are made; the raw materials and the apparatus used are, unless otherwise specified, conventional commercially available products.
As shown in fig. 1-4, the present invention provides an integrated core for liquid heating and refrigeration heat exchange, which is provided with a liquid flow channel unit and a PTC heating unit 1, and is further provided with a first heat transfer zone 2 and a second heat transfer zone 3, wherein the first heat transfer zone 2 and the second heat transfer zone 3 are stacked and connected from top to bottom; the liquid flow channel unit is provided with a refrigerant flow channel unit 4 and a cooling liquid flow channel unit which are separated from each other, the cooling liquid flow channel unit is provided with a first cooling liquid flow channel unit 5 and a second cooling liquid flow channel unit 6, and the first cooling liquid flow channel unit 5 is communicated with the second cooling liquid flow channel unit 6; the refrigerant flow passage unit 4 is used for circulating a refrigerant, and the cooling liquid flow passage unit is used for circulating a cooling liquid; the refrigerant and the cooling liquid are heat exchange media. The first heat exchange zone 2 is provided with a refrigerant flow channel unit 4 and a first cooling liquid flow channel unit 5, and the refrigerant flow channel unit 4 and the first cooling liquid flow channel unit 5 are arranged in a stacking and connecting mode from top to bottom; the second heat exchange zone 3 is provided with a PTC heating unit 1 and a second cooling liquid flow channel unit 6, and the PTC heating unit 1 and the second cooling liquid flow channel unit 6 are stacked and connected from top to bottom; the PTC heating unit 1 supplies heat to its adjacent second coolant flow passage unit 6, and the refrigerant flow passage unit 4 can absorb heat from its adjacent first coolant flow passage unit 5.
The invention is provided with a first heat exchange area 2 and a second heat exchange area 3, and integrates a refrigerant flow passage unit 4, a cooling liquid flow passage unit and a PTC heating unit 1, thereby reducing the prior arrangement space, saving the number of connecting pipelines, occupying small space, achieving the purpose that one assembly has two functions of heating and refrigerating at the same time, and avoiding the defects that all heaters and killers on the market are relatively independent two assemblies and are communicated through a pipeline according to a heat management system framework, occupying large space and being difficult to arrange and communicate the pipeline. The user can open the coolant flow passage unit firstly according to the actual need of the whole vehicle end, and then select to open the PTC heating unit 1 or the refrigerant flow passage unit 4, and the opening modes mainly include three types:
(1) the PTC heating unit 1 is started, the refrigerant flow passage unit 4 is closed, the heat absorption temperature of the cooling liquid in the second cooling liquid flow passage unit 6 is increased, heat is provided to the outside through the first cooling liquid flow passage unit 5, and the cooling liquid is output to the outside to achieve the purpose of heating the whole vehicle end;
(2) and simultaneously, the PTC heating unit 1 and the refrigerant flow channel unit 4 are started, and at the moment, the refrigerant flow channel unit 4 is communicated with a system pipeline needing to be heated from the outside. On one hand, the input cooling liquid absorbs the heat of the PTC heating unit 1 and then outputs the heat to the outside; on the other hand, the temperature of the input refrigerant is lower than that of the input cooling liquid, so that the refrigerant in the refrigerant flow channel unit 4 further absorbs heat from the first cooling liquid flow channel unit 5 and outputs the refrigerant outwards, and the refrigerant is used as another passage to provide heat outwards, the heat exchange efficiency of the PTC heating unit 1 is further improved, and the purpose of remarkably improving the heating effect of the whole vehicle end is achieved;
(3) the refrigerant flow passage unit 4 is opened, and the PTC heating unit 1 is closed, at which time the refrigerant flow passage unit 4 is connected to an external refrigeration system. The temperature of the input refrigerant is lower than the temperature of the input cooling liquid, so that the refrigerant flow channel unit 4 absorbs heat from the first cooling liquid flow channel unit 5, the temperature of the cooling liquid in the first cooling liquid flow channel unit 5 is reduced, and the purpose of refrigerating the whole vehicle end is achieved by outputting the cooling liquid.
The cooling liquid flow channel unit is provided with a cooling liquid flow channel, cooling liquid flows through the cooling liquid flow channel, the cooling liquid flow channel of the cooling liquid flow channel unit is usually connected with an external cooling liquid loop, for example, the external cooling liquid loop is a whole vehicle cooling liquid loop, and cooling liquid of the external cooling liquid loop enters the cooling liquid flow channel to complete heat absorption and temperature rise and then returns to the external cooling liquid loop. The PTC heating unit 1 is provided with a PTC heating device, the PTC heating device is provided with a PTC heating bag, the PTC heating bag is heated through electric heating, heat is provided for the adjacent second cooling liquid flow channel unit 6, and the temperature of the cooling liquid circulating in the flow channel in the second cooling liquid flow channel unit 6 is increased. The refrigerant flow passage unit 4 is provided with a refrigerant flow passage 9, and the refrigerant flow passage 9 of the refrigerant flow passage unit 4 is usually communicated with an external heating system or an external refrigerating system, wherein the external heating system comprises a heat exchanger and the like, and the external refrigerating system comprises a compressor and the like. And the user selects heating or cooling according to actual needs. When heating is needed, the PTC heating unit 1 and the refrigerant flow passage unit 4 are simultaneously started, the refrigerant flow passage 9 of the refrigerant flow passage unit 4 is communicated with an external system needing heating, refrigerant enters the refrigerant flow passage 9 from the external system needing heating, and returns to the external system needing heating after heat absorption and temperature rise are completed, so that the external heating purpose is achieved, and the power of the PTC heating unit 1 is generally increased by the mode; when refrigeration is needed, the refrigerant flow channel unit 4 is opened, the PTC heating unit 1 is closed, the refrigerant flow channel 9 of the refrigerant flow channel unit 4 is communicated with an external refrigeration system, refrigerant enters the refrigerant flow channel 9 from the external refrigeration system and enters the refrigerant flow channel 9 to complete heat absorption, so that the refrigerant in the refrigerant flow channel 9 absorbs heat from the adjacent first cooling liquid flow channel unit 5, the temperature of cooling liquid circulating in the flow channel in the first cooling liquid flow channel unit 5 is reduced, and the purpose of external refrigeration is achieved. In the above process, the cooling liquid flow channel unit is always in an open state.
The refrigerant is a substance having a low boiling point, and is generally used in domestic automobiles in models of R134a, 1234yf, and the like, and is colorless and odorless at normal temperature and pressure. If the invention is used as an evaporation component in an air conditioning system, the superheat degree of the refrigerant is proper at 5 ℃, the surface temperature of the PTC heating unit is about 230 ℃, which is far higher than the saturated volatilization temperature of the refrigerant under the same pressure, so that supersaturation is easy to occur to cause overheating of a compressor or a condenser, therefore, when the PTC heating unit 1 and the refrigerant flow passage unit 4 are simultaneously opened, the refrigerant is heated by the cooling liquid indirectly, and the heating temperature of the cooling liquid can be about 80 ℃.
As a preferred embodiment, when the number of the first coolant flow passage unit 5, the second coolant flow passage unit 6, the refrigerant flow passage unit 4, and the PTC heating unit 1 is plural, respectively; in the first heat exchange zone 2, the refrigerant flow channel units 4 and the first cooling liquid flow channel units 5 are sequentially and alternately stacked and connected from top to bottom, and the adjacent refrigerant flow channel units 4 are communicated in parallel, so that the refrigerant resistance is reduced, the flow is increased, and the heat absorption and temperature rise effects of the refrigerant flow channel units 4 are improved; the adjacent first cooling liquid channel units 5 are communicated in series. In the second heat exchange area 3, the PTC heating units 1 and the second cooling liquid channel units 6 are alternately stacked and connected from top to bottom, and adjacent second cooling liquid channel units 6 are communicated in series. The number of the first cooling liquid flow passage unit 5, the second cooling liquid flow passage unit 6, the refrigerant flow passage unit 4 and the PTC heating units 1 is increased to enhance the heating or cooling effect. The first cooling liquid flow channel unit 5 and the second cooling liquid flow channel unit 6 are connected in series respectively, so that the heat exchange time is prolonged, and the heating and heat absorption effects of the cooling liquid are improved.
As a preferred embodiment, as shown in fig. 1-4, the present invention is provided with a plurality of metal shells 7, and each metal shell 7 is a cover-shaped structure that is open downwards, i.e. each metal shell has a rim extending downwards and outwards; a plurality of metal shells 7 are stacked and connected from top to bottom, and a relatively closed cavity is formed between two adjacent metal shells 7; in the first heat exchange zone 2, one or more cavities are arranged from top to bottom as first cooling liquid flow channels 8, each first cooling liquid flow channel 8 and metal shells 7 adjacent to the first cooling liquid flow channel from top to bottom form a first cooling liquid flow channel unit 5, a cavity between every two adjacent first cooling liquid flow channels 8 is a refrigerant flow channel 9, and the refrigerant flow channel 9 and the metal shells 7 adjacent to the first cooling liquid flow channel from top to bottom form a refrigerant flow channel unit 4; in the second heat exchange zone 3, one or more cavities are arranged from top to bottom as second cooling liquid flow channels 10, each second cooling liquid flow channel 10 and metal shells 7 adjacent to the second cooling liquid flow channel from top to bottom form a second cooling liquid flow channel unit 6, the cavity between every two adjacent second cooling liquid flow channels 10 is a heating cavity 11, a PTC heating unit 1 is installed in the heating cavity 11, and generally, electrode plates of a PTC heating bag extend out of the metal shells 7 and are electrically connected with a power supply through electronic components such as circuit boards, controllers, leads and the like; the metal shell 7 adjacent to the first cooling liquid flow channel 8, the second cooling liquid flow channel 10 and the refrigerant flow channel 9 is respectively provided with a channel for the heat exchange medium to enter and exit; the cooling liquid flow channel is provided with a first cooling liquid flow channel 8 and a second cooling liquid flow channel 10, and the refrigerant flow channel 9, the cooling liquid flow channel and the heating cavity 11 are isolated from each other and are not communicated with each other.
Each refrigerant flow channel 9 may be provided with a refrigerant inlet 12 and a refrigerant outlet 13, respectively; two adjacent refrigerant flow passages 9, wherein a refrigerant inlet 12 of the refrigerant flow passage 9 positioned above is communicated with a refrigerant inlet 12 of the refrigerant flow passage 9 positioned below, a refrigerant outlet 13 of the refrigerant flow passage 9 positioned above is communicated with a refrigerant outlet 13 of the refrigerant flow passage 9 positioned below, the refrigerant flow passages 9 in the first heat exchange zone 2 are arranged in parallel communication, and the refrigerant flow passages 9 can be communicated in parallel through a connecting pipeline or in the following way:
each refrigerant flow channel 9 which is communicated in parallel is respectively provided with an inlet communication hole 14 and an outlet communication hole 15; two adjacent refrigerant flow channels 9, wherein the refrigerant inlet 12 of the refrigerant flow channel 9 positioned above protrudes upward, the inlet communication hole 14 of the refrigerant flow channel 9 positioned below is recessed downward, and the two are communicated and connected in a sealing manner. The refrigerant outlet 13 of the refrigerant flow path 9 positioned below is upwardly convex, and the outlet communication hole 15 of the refrigerant flow path 9 positioned above is downwardly concave, and the two are communicated and connected with each other in a sealing manner. The communication mode saves the number of connecting pipelines and occupies small space.
Each first cooling fluid channel 8 may be further provided with a first cooling fluid inlet 16 and a first cooling fluid outlet 17, respectively; two adjacent first cooling liquid flow passages 8, wherein a first cooling liquid inlet 16 of the upper first cooling liquid flow passage 8 is communicated with a first cooling liquid outlet 17 of the lower first cooling liquid flow passage 8; each second cooling liquid flow channel 10 is respectively provided with a second cooling liquid inlet 18 and a second cooling liquid outlet 19, two adjacent second cooling liquid flow channels 10 are provided, wherein the second cooling liquid inlet 18 of the second cooling liquid flow channel 10 positioned above is communicated with the second cooling liquid outlet 19 of the second cooling liquid flow channel 10 positioned below; the first cooling liquid inlet 16 of the first cooling liquid flow channel 8 positioned at the bottommost part of the first heat exchange zone 2 is communicated with the second cooling liquid outlet 19 of the second cooling liquid flow channel 10 positioned at the topmost part of the second heat exchange zone 3; the cooling liquid flow channel formed by the first cooling liquid flow channel 8 and the second cooling liquid flow channel 10 is zigzag-shaped, that is, the first cooling liquid flow channel 8 and the second cooling liquid flow channel 10 are respectively communicated in series, and the series communication mode can be communicated through a pipeline or the following modes:
two adjacent first cooling liquid flow passages 8, wherein the first cooling liquid inlet 16 of the first cooling liquid flow passage 8 positioned above is concave downwards, the first cooling liquid outlet 17 of the first cooling liquid flow passage 8 positioned below is convex upwards, and the edges of the two are connected in a sealing way; and the second cooling liquid inlet 18 of the second cooling liquid flow passage 10 positioned above is concave downwards, the second cooling liquid outlet 19 of the second cooling liquid flow passage 10 positioned below is convex upwards, and the edges of the two are connected in a sealing way. The communication mode saves the number of connecting pipelines and occupies small space.
The invention is also provided with a cooling liquid inlet pipe 20, a cooling liquid outlet pipe 21, a refrigerant inlet pipe 22 and a refrigerant outlet pipe 23; the cooling liquid inlet pipe 20 is arranged below the bottommost metal shell 7, and the cooling liquid outlet pipe 21, the refrigerant inlet pipe 22 and the refrigerant outlet pipe 23 are arranged above the topmost metal shell 7; one end of the cooling liquid inlet pipe 20 is communicated with the second cooling liquid inlet 18 of the second cooling liquid flow channel 10 positioned at the bottommost layer, and one end of the cooling liquid outlet pipe 21 is communicated with the first cooling liquid outlet 17 of the first cooling liquid flow channel 8 positioned at the topmost layer; and the refrigerant inlet pipe 22 and the refrigerant outlet pipe 23 are respectively communicated with an external system needing heating or an external refrigerating system. One end of the refrigerant liquid inlet pipe 22 is communicated with the refrigerant inlet 12 of the refrigerant flow channel 9 positioned at the topmost layer, and one end of the refrigerant liquid inlet pipe 22 is communicated with the refrigerant outlet 13 of the refrigerant flow channel 9 positioned at the topmost layer; and are respectively connected with an external cooling liquid loop through a cooling liquid inlet pipe 20 and a cooling liquid outlet pipe 21, for example, the external cooling liquid loop is a whole vehicle cooling liquid loop.
The metal shell 7 avoids the problems that the conventional die casting structure of the PCT liquid heating assembly is complex, the internal air entrainment cannot be avoided, and the leakage of cooling liquid or refrigerant is easy to cause poor insulation after long-time work. The metal shell 7 is preferably made of aluminum, which is a good heat conductor with a thermal conductivity 3 times greater than that of iron, and is an ideal heat exchange and dissipation material. The two adjacent metal shells 7 are preferably brazed or laser welded to form a relatively sealed cavity, so that the welding reliability is improved. Brazing or laser welding belongs to a conventional welding method, wherein brazing has the advantages of small deformation, smooth and attractive joint, suitability for welding components which are precise, complex and composed of different materials and the like. The laser welding has the advantages of no need of vacuum chamber, no X-ray produced during welding, etc. The pressure casting structure solves the technical problems that the strength of the wall of a part is reduced due to the air holes in the traditional pressure casting structure, and cooling liquid possibly enters a heating unit after long-time work, so that the product is electrified and the whole automobile cannot run. The metal shell 7 is made by adopting a stamping process, the edges of the through holes which are upwards convex or downwards concave and the grooves and the like on the metal shell 7 are formed in one step by stamping, the structure is simple, the manufacturing and assembling are convenient, and the production efficiency is improved.
A liquid heating and refrigerating heat exchange assembly is provided with a box-shaped shell and an integrated core body which is arranged in the box-shaped shell and used for liquid heating and refrigerating heat exchange. The box-shaped shell is the prior art, and the material is hydrolysis-resistant material usually, plays sealed heat retaining effect, reduces calorific loss, improves power density. According to the invention, through the unique stacking structure design of the integrated core body for liquid heating, refrigeration and heat exchange, and the integrated core body is arranged in the box-shaped shell, the risk of melting leakage is effectively reduced, and the insulation reliability is improved.
It should be noted that, in addition to the above three modes, the user can also adopt the following modes according to the actual needs of the whole vehicle end: the refrigerant flow passage unit 4 is opened and the PTC heating unit 1 is closed, and at this time, the refrigerant flow passage unit 4 is connected to an external air conditioning system. The temperature of the input cooling liquid is set to be lower than the temperature of the input refrigerant, so that the first cooling liquid flow channel unit 5 absorbs heat from the refrigerant flow channel unit 4, the temperature of the cooling liquid in the first cooling liquid flow channel unit 5 is improved, and the cooling liquid is output to achieve the purpose of external heating of the whole vehicle end. If the expected heating effect can not be achieved, the PTC heating unit 1 can be opened to assist in heating the first cooling liquid flow channel unit 5, so as to further increase the temperature of the cooling liquid and achieve the purpose of external heating at the end of the whole vehicle.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The integrated core body for liquid heating and refrigerating heat exchange is provided with a liquid flow channel unit and a PTC heating unit (1), and is characterized by also being provided with a first heat exchange area (2) and a second heat exchange area (3), wherein the first heat exchange area (2) and the second heat exchange area (3) are stacked and connected from top to bottom; the liquid flow channel unit is provided with a refrigerant flow channel unit (4) and a cooling liquid flow channel unit which are separated from each other, the cooling liquid flow channel unit is provided with a first cooling liquid flow channel unit (5) and a second cooling liquid flow channel unit (6), the refrigerant flow channel unit (4) is used for circulating refrigerant, and the cooling liquid flow channel unit is used for circulating cooling liquid; the first heat exchange area (2) is provided with the refrigerant flow channel unit (4) and the first cooling liquid flow channel unit (5), and the first cooling liquid flow channel unit (5) is communicated with the second cooling liquid flow channel unit (6); the refrigerant flow channel unit (4) and the first cooling liquid flow channel unit (5) are arranged in a stacked connection from top to bottom; the second heat exchange area (3) is provided with the PTC heating unit (1) and the second cooling liquid flow channel unit (6), and the PTC heating unit (1) and the second cooling liquid flow channel unit (6) are stacked and connected from top to bottom.
2. The integrated core for heat exchange of liquid heating and refrigeration as claimed in claim 1, wherein when the number of the first cooling liquid flow channel unit (5), the second cooling liquid flow channel unit (6), the refrigerant flow channel unit (4) and the PTC heating unit (1) is plural respectively; in the first heat exchange zone (2), the refrigerant flow channel units (4) and the first cooling liquid flow channel units (5) are sequentially and alternately stacked and connected from top to bottom, adjacent refrigerant flow channel units (4) are communicated in parallel, and adjacent first cooling liquid flow channel units (5) are communicated in series; in the second heat exchange zone (3), the PTC heating units (1) and the second cooling liquid flow channel units (6) are sequentially and alternately stacked and connected from top to bottom, and the adjacent second cooling liquid flow channel units (6) are communicated in series.
3. The integrated core for liquid heating and refrigeration heat exchange as recited in claim 1, characterized in that a plurality of metal shells (7) are provided, and each metal shell (7) is a cover-shaped structure with a downward opening; a plurality of metal shells (7) are stacked and connected from top to bottom, and a relatively closed cavity is formed between two adjacent metal shells (7); in the first heat exchange zone (2), one or more cavities are arranged at intervals from top to bottom to form first cooling liquid flow channels (8), each first cooling liquid flow channel (8) and the metal shell (7) which is adjacent to the first cooling liquid flow channel up and down form the first cooling liquid flow channel unit (5), the cavity between two adjacent first cooling liquid flow channels (8) is a refrigerant flow channel (9), and the refrigerant flow channel (9) and the metal shell (7) which is adjacent to the refrigerant flow channel up and down form the refrigerant flow channel unit (4); in a second heat exchange zone (3), one or more cavities are arranged at intervals from top to bottom to form second cooling liquid flow channels (10), each second cooling liquid flow channel (10) and the metal shell (7) which is adjacent to the second cooling liquid flow channel up and down form a second cooling liquid flow channel unit (6), the cavity between every two adjacent second cooling liquid flow channels (10) is a heating cavity (11), and the PTC heating unit (1) is installed in the heating cavity (11); the metal shell (7) adjacent to the first cooling liquid flow channel (8), the second cooling liquid flow channel (10) and the refrigerant flow channel (9) is respectively provided with a channel for heat exchange medium to enter and exit; the coolant liquid runner is equipped with first coolant liquid runner (8) with second coolant liquid runner (10), refrigerant runner (9) the coolant liquid runner heating chamber (11) are mutual isolation each other not UNICOM between two liang.
4. The integrated core for heat exchange of liquid heating and refrigeration as recited in claim 3, wherein each refrigerant flow channel (9) is respectively provided with a refrigerant inlet (12) and a refrigerant outlet (13); the refrigerant flow channels (9) are adjacent to each other, a refrigerant inlet (12) of the refrigerant flow channel (9) positioned above is communicated with a refrigerant inlet (12) of the refrigerant flow channel (9) positioned below, a refrigerant outlet (13) of the refrigerant flow channel (9) positioned above is communicated with a refrigerant outlet (13) of the refrigerant flow channel (9) positioned below, and the refrigerant flow channels (9) in the first heat exchange area (2) are communicated in parallel.
5. The integrated core for heat exchange and refrigeration of liquid heating and refrigeration as claimed in claim 4, characterized in that each refrigerant flow channel (9) arranged in parallel communication is respectively provided with a inlet communication hole (14) and an outlet communication hole (15); two adjacent refrigerant flow channels (9), wherein a refrigerant inlet (12) of the refrigerant flow channel (9) positioned above is upwards convex, a inlet communication hole (14) of the refrigerant flow channel (9) positioned below is downwards concave, and the two are communicated and connected in a sealing way; the refrigerant outlet (13) of the refrigerant flow channel (9) positioned at the lower part is upwards convex, the outlet communication hole (15) of the refrigerant flow channel (9) positioned at the upper part is downwards concave, and the two are communicated and connected in a sealing way.
6. A liquid heating and refrigerating heat exchange integrated core as claimed in claim 5, wherein each first cooling liquid flow channel (8) is provided with a first cooling liquid inlet (16) and a first cooling liquid outlet (17); two adjacent first cooling liquid flow passages (8), wherein a first cooling liquid inlet (16) of the first cooling liquid flow passage (8) positioned at the upper part is communicated with a first cooling liquid outlet (17) of the first cooling liquid flow passage (8) positioned at the lower part; each second cooling liquid flow channel (10) is provided with a second cooling liquid inlet (18) and a second cooling liquid outlet (19) respectively, two adjacent second cooling liquid flow channels (10) are arranged, wherein the second cooling liquid inlet (18) of the second cooling liquid flow channel (10) positioned above is communicated with the second cooling liquid outlet (19) of the second cooling liquid flow channel (10) positioned below; a first cooling liquid inlet (16) of a first cooling liquid flow channel (8) positioned at the bottommost part of the first heat exchange zone (2) is communicated with a second cooling liquid outlet (19) of a second cooling liquid flow channel (10) positioned at the topmost part of the second heat exchange zone (3); the cooling liquid flow channel formed by the first cooling liquid flow channel (8) and the second cooling liquid flow channel (10) is zigzag-shaped.
7. The integrated core for heat exchange and refrigeration of liquid heating and refrigeration as recited in claim 6, wherein two adjacent first cooling liquid flow passages (8), wherein the first cooling liquid inlet (16) of the first cooling liquid flow passage (8) positioned above is concave downwards, the first cooling liquid outlet (17) of the first cooling liquid flow passage (8) positioned below is convex upwards, and the edges of the two are connected in a sealing way; and the second cooling liquid inlet (18) of the second cooling liquid flow channel (10) positioned above is concave downwards, the second cooling liquid outlet (19) of the second cooling liquid flow channel (10) positioned below is convex upwards, and the edges of the two are connected in a sealing way.
8. The integrated core for liquid heating and refrigeration heat exchange as recited in claim 7, further comprising a coolant inlet pipe (20), a coolant outlet pipe (21), a refrigerant inlet pipe (22), and a refrigerant outlet pipe (23); the cooling liquid inlet pipe (20) is arranged below the bottommost metal shell (7), and the cooling liquid outlet pipe (21), the refrigerant liquid inlet pipe (22) and the refrigerant liquid outlet pipe (23) are arranged above the topmost metal shell (7); one end of the cooling liquid inlet pipe (20) is communicated with a second cooling liquid inlet (18) of the second cooling liquid flow channel (10) positioned at the bottommost layer, and one end of the cooling liquid outlet pipe (21) is communicated with a first cooling liquid outlet (17) of the first cooling liquid flow channel (8) positioned at the topmost layer; one end of the refrigerant liquid inlet pipe (22) is communicated with the refrigerant inlet (12) of the refrigerant flow channel (9) positioned at the topmost layer, and one end of the refrigerant liquid inlet pipe (22) is communicated with the refrigerant outlet (13) of the refrigerant flow channel (9) positioned at the topmost layer.
9. The integrated core for liquid heating and refrigeration heat exchange as recited in claim 1, wherein the metal shell (7) is made of aluminum by a stamping process.
10. A liquid heating and refrigerating heat exchange assembly, which is characterized in that the assembly is provided with a box-shaped shell and an integrated core body which is arranged in the box-shaped shell and used for liquid heating and refrigerating heat exchange and is provided with any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110727959.5A CN113310209A (en) | 2021-06-29 | 2021-06-29 | Integrated core body for liquid heating and refrigerating heat exchange and heating and refrigerating heat exchange assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110727959.5A CN113310209A (en) | 2021-06-29 | 2021-06-29 | Integrated core body for liquid heating and refrigerating heat exchange and heating and refrigerating heat exchange assembly |
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| CN113310209A true CN113310209A (en) | 2021-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110727959.5A Pending CN113310209A (en) | 2021-06-29 | 2021-06-29 | Integrated core body for liquid heating and refrigerating heat exchange and heating and refrigerating heat exchange assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114307906A (en) * | 2022-02-16 | 2022-04-12 | 北京味食源食品科技有限责任公司 | Edible essence preparation equipment |
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2021
- 2021-06-29 CN CN202110727959.5A patent/CN113310209A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114307906A (en) * | 2022-02-16 | 2022-04-12 | 北京味食源食品科技有限责任公司 | Edible essence preparation equipment |
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