CN216558438U - Plate type heat exchanger - Google Patents
Plate type heat exchanger Download PDFInfo
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- CN216558438U CN216558438U CN202123388668.2U CN202123388668U CN216558438U CN 216558438 U CN216558438 U CN 216558438U CN 202123388668 U CN202123388668 U CN 202123388668U CN 216558438 U CN216558438 U CN 216558438U
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Abstract
The utility model relates to the technical field of heat exchangers, and provides a plate heat exchanger, which comprises: the heat exchanger comprises a plurality of first plate units, a plurality of second plate units and a plurality of flow partition plate units, wherein the first plate units and the second plate units are alternately stacked, the flow partition plate units are arranged between the adjacent first plate units and second plate units, and the first plate units and the second plate units are fixedly connected with the flow partition plate units; the first plate unit is provided with a first through cavity, the first through cavity forms a first flow channel through the flow partition plate units on the two sides, the second plate unit is provided with a second through cavity, the second through cavity forms a second flow channel through the flow partition plate units on the two sides, the plurality of first flow channels are communicated, and the plurality of second flow channels are communicated; the first plate unit comprises at least one first plate, the second plate unit comprises at least one second plate, and the flow partition plate unit comprises at least one flow partition plate. The plate heat exchanger can be flexibly set according to the actual pressure resistance requirement, and the pressure resistance is improved.
Description
Technical Field
The utility model relates to the technical field of heat exchangers, in particular to a plate type heat exchanger.
Background
The plate heat exchanger is used for heat transfer heat exchange between two parts of fluid (including liquid and liquid, liquid and gas, gas and two-phase fluid and liquid and two-phase fluid). The flat plate type heat exchanger is generally a flat plate type structure formed by stacking a series of metal sheets with different shapes, and a metal material spacer is arranged between two parts of the fluid to carry out heat transfer and mutual isolation. In the conventional plate heat exchanger, a cavity is formed by a gap between two metal spacers to form a liquid heat exchange channel, but the structural design of the conventional plate heat exchanger determines that the conventional plate heat exchanger is easy to deform the spacers under the action of higher liquid pressure to cause bending or leakage. In the other design of the etching type plate heat exchanger, a mode of removing materials on a spacer to form a fluid heat exchange channel by adopting a printed circuit board etching process can improve the pressure resistance of the heat exchanger, but a large amount of chemical reaction is required to be carried out to accurately remove materials of a flow channel in production, a large amount of water resources are required to be consumed, a large amount of reaction waste liquid is discharged, the environment is polluted, the production efficiency is low, and the production cost is high.
In the fields of automobile heat pumps and air energy heat pumps, a high-temperature and high-pressure carbon dioxide refrigerant heat pump is a future development trend, the critical pressure of a carbon dioxide refrigerant reaches more than 7MPa, and the traditional plate type heat exchanger structure cannot bear the requirement of the high-pressure refrigerant and is difficult to meet the pressure-resistant requirement. The etched plate heat exchanger is not environment-friendly enough, has low production efficiency and high cost, and prevents large-scale popularization and application.
On the other hand, the thickness of the spacer and the pressure resistance of the traditional plate heat exchanger are always contradictory, although the pressure resistance can be improved by increasing the thickness of the spacer, the heat exchange efficiency is reduced, the thickness and the weight are increased in multiples, certain restriction is brought to the use, and the heat exchange area-weight ratio and the heat exchange area-thickness ratio become important performance indexes which cannot be ignored of the plate heat exchanger.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a plate heat exchanger, which aims to solve the technical problems that the plate heat exchanger in the prior art cannot bear the requirement of a high-pressure refrigerant and an etching plate heat exchanger is not environment-friendly enough, low in production efficiency and high in cost, and provides an innovative structural design for improving the heat exchange area to weight ratio and the heat exchange area to thickness ratio.
In order to achieve the purpose, the utility model adopts the technical scheme that:
the present invention provides a plate heat exchanger comprising: the heat exchanger comprises a plurality of first plate units, a plurality of second plate units and a plurality of flow partition plate units, wherein the first plate units and the second plate units are alternately stacked, the flow partition plate units are arranged between the adjacent first plate units and second plate units, and the first plate units and the second plate units are fixedly connected with the flow partition plate units;
the first plate unit is provided with a first through cavity, the first through cavity forms a first flow channel through the flow partition plate units on the two sides, the second plate unit is provided with a second through cavity, the second through cavity forms a second flow channel through the flow partition plate units on the two sides, the first flow channels are communicated, and the second flow channels are communicated;
the first plate unit comprises at least one first plate, the second plate unit comprises at least one second plate, and the flow partition plate unit comprises at least one flow partition plate.
The plate heat exchanger according to the above, further comprising:
the first baffle is arranged on the outer side of the first plate unit at the end part and fixedly connected with the first plate unit, and the first baffle, the first plate unit and the flow partition plate unit form the first flow channel;
the second baffle is arranged on the outer side of the second plate unit at the end part and fixedly connected with the second plate unit, and the second baffle, the second plate unit and the flow partition plate unit form the second flow channel.
According to the plate heat exchanger, the first flow channel and the second flow channel are symmetrically arranged;
the first channel comprises a first channel main body, a first channel opening and a second channel opening, wherein the first channel opening and the second channel opening are arranged on one diagonal of the first plate unit, the first channel opening and the second channel opening are both communicated with the first channel main body, and a first through hole and a second through hole are arranged on the other diagonal of the first plate unit;
the second flow channel comprises a second flow channel main body, and a third flow channel opening and a fourth flow channel opening which are arranged at one diagonal of the second plate piece unit, the third flow channel opening and the fourth flow channel opening are both communicated with the second flow channel main body, and a third through hole and a fourth through hole are arranged at the other diagonal of the second plate piece unit;
the four corners of the flow partition plate unit are respectively provided with a first flow partition plate through hole, a second flow partition plate through hole, a third flow partition plate through hole and a fourth flow partition plate through hole;
the first flow channel opening, the first flow partition plate through hole and the third through hole are communicated, and the second flow channel opening, the third flow partition plate through hole and the fourth through hole are communicated;
the first through hole, the second flow partition plate through hole and the third flow channel opening are communicated, and the second through hole, the fourth flow partition plate through hole and the fourth flow channel opening are communicated.
According to the plate heat exchanger, the first baffle is provided with a first hot fluid inlet and a first cold fluid outlet, the first hot fluid inlet is communicated with the first flow channel opening, and the first cold fluid outlet is communicated with the first through hole;
and a first hot fluid outlet and a first cold fluid inlet are arranged on the second baffle, the first hot fluid outlet is communicated with the fourth through hole, and the first cold fluid inlet is communicated with the fourth runner port.
According to the plate heat exchanger, the first baffle is provided with a second thermal fluid inlet and a second thermal fluid outlet, the second thermal fluid inlet is communicated with the first flow passage, and the second thermal fluid outlet is communicated with the second flow passage;
a second cold fluid inlet and a second cold fluid outlet are further formed in the first baffle, the second cold fluid inlet is communicated with the second through hole, and the second cold fluid outlet is communicated with the first through hole;
the second baffle is a solid plate.
According to the plate heat exchanger, the first baffle is provided with a third thermal fluid inlet and a third thermal fluid outlet, the third thermal fluid inlet and the third thermal fluid outlet are arranged in a diagonal manner, the third thermal fluid inlet is communicated with the first channel opening, and the third thermal fluid outlet is communicated with the second channel opening;
and a third cold fluid inlet and a third cold fluid outlet are arranged on the second baffle, the third cold fluid inlet and the third cold fluid outlet are arranged in a diagonal manner, the third cold fluid inlet is communicated with the fourth runner port, and the third cold fluid outlet is communicated with the third runner port.
According to the plate heat exchanger, the first plate sheet unit and the flow partition plate unit are welded through diffusion welding;
the second plate sheet unit and the flow baffle plate unit are welded through diffusion welding;
the first baffle plate and the first plate unit are welded through diffusion welding;
the second baffle plate and the second plate unit are welded through diffusion welding.
The plate heat exchanger according to the above, wherein the first plate unit comprises a first plate;
or the first plate unit comprises a plurality of first plates which are stacked, and two adjacent first plates are welded through diffusion welding.
The plate heat exchanger according to the above, wherein the second plate unit comprises a second plate;
or the second plate unit comprises a plurality of second plates which are stacked, and two adjacent second plates are welded through diffusion welding.
According to the plate heat exchanger, the flow partition plate unit comprises a flow partition plate, a plurality of protrusions are arranged on two side faces of the flow partition plate respectively, and the plurality of protrusions are regularly or irregularly arranged.
The plate heat exchanger provided by the utility model has the beneficial effects that:
the plate heat exchanger provided by the utility model has the advantages that the structure for forming the first flow channel and the second flow channel is simple, the thicknesses of the first flow channel and the second flow channel can be flexibly set according to the actual pressure resistance requirement, and the thickness of the flow partition plate unit can also be flexibly set according to the actual pressure resistance requirement, so that the pressure resistance of the plate heat exchanger can be improved, and the heat exchange efficiency can be improved; the plate heat exchanger that this embodiment provided has still improved heat transfer area and weight ratio and heat transfer area and thickness ratio, and overall structure is simple, low cost.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for 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 invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic diagram of an explosion structure of a plate heat exchanger according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a first plate unit according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a second plate unit according to an embodiment of the present invention;
fig. 4 is a schematic view of a perspective structure of a flow baffle unit according to an embodiment of the present invention;
fig. 5 is a first schematic structural diagram of a first baffle according to an embodiment of the present invention;
fig. 6 is a first schematic structural diagram of a second baffle according to an embodiment of the present invention;
fig. 7 is a second schematic structural diagram of a first baffle according to an embodiment of the present invention;
fig. 8 is a second schematic structural diagram of a second baffle according to an embodiment of the present invention;
fig. 9 is a schematic diagram of an explosion structure of a plate heat exchanger according to an embodiment of the present invention;
fig. 10 is a schematic view of another perspective structure of the flow partitioner unit according to the embodiment of the present invention;
fig. 11 is a third schematic structural diagram of a first baffle according to an embodiment of the present invention;
fig. 12 is a third schematic structural diagram of a second baffle according to an embodiment of the present invention;
fig. 13 is a third schematic view of an explosion structure of the plate heat exchanger according to the embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
100. a plate heat exchanger; 110. a first sheet unit; 110a, a first plate; 111. a first through cavity; 111a, a first flow channel; 111a1, first flow channel body; 111a2, first runner opening; 111a3, second runner opening; 112. a first through hole; 113. a second through hole; 120. a second sheet unit; 120a, a second plate; 121. a second through cavity; 121a, a second flow channel; 121a1, a second flow channel body; 121a2, a third flow channel opening; 121a3, fourth runner port; 122. a third through hole; 123. a fourth via hole; 130. a flow partition plate unit; 130a, a flow isolating plate; 131. a first flow baffle through hole; 132. a second flow isolating plate through hole; 133. a third flow partition plate through hole; 134. a fourth flow partition plate through hole; 135. a protrusion; 140. a first baffle plate; 141. a first hot fluid inlet; 142. a first cold fluid outlet; 143. a second thermal fluid inlet; 144. a second hot fluid outlet; 145. a second cold fluid inlet; 146. a second cold fluid outlet; 147. a third thermal fluid inlet; 148. a third hot fluid outlet; 150. a second baffle; 151. a first hot fluid outlet; 152. a first cold fluid inlet; 153. a third cold fluid inlet; 154. a third cold fluid outlet.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention 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 utility model and are not intended to limit the utility model.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.
Referring to fig. 1, the present embodiment provides a plate heat exchanger 100, which includes: the plate comprises a plurality of first plate units 110, a plurality of second plate units 120 and a plurality of flow partition plate units 130, wherein the first plate units 110 and the second plate units 120 are alternately stacked, the flow partition plate units 130 are arranged between the adjacent first plate units 110 and the adjacent second plate units 120, and the first plate units 110 and the second plate units 120 are fixedly connected with the flow partition plate units 130;
a first through cavity 111 is formed in the first plate unit 110, a first flow channel 111a is formed in the first through cavity 111 through the flow partition plate units 130 on the two sides, a second through cavity 121 is formed in the second plate unit 120, a second flow channel 121a is formed in the second through cavity 121 through the flow partition plate units 130 on the two sides, the first flow channels 111a are communicated with one another, and the second flow channels 121a are communicated with one another;
the first plate unit 110 includes at least one first plate 110a, the second plate unit 120 includes at least one second plate 120a, and the flow partitioner unit 130 includes at least one flow partitioner 130 a.
The working principle of the plate heat exchanger 100 provided in this embodiment is as follows:
in the plate heat exchanger 100 provided in this embodiment, the first flow channel 111a is formed by fixedly connecting the first plate unit 110 and the two side flow baffles 130a to seal the first through cavity 111, the second flow channel 121a is formed by fixedly connecting the second plate unit 120 and the two side flow baffles 130a to seal the second through cavity 121, the first plate unit 110 includes at least one first plate 110a, and the second plate unit 120 includes at least one second plate 120 a; the thicknesses of the first flow channel 111a and the second flow channel 121a are determined by the number of the first plate 110a and the second plate 120a, that is, the number of the first plate 110a and the second plate 120a is changed to obtain the first flow channel 111a and the second flow channel 121a with different thicknesses, so that different flow blocking designs are obtained, that is, the thickness of the formed first flow channel 111a can be set according to actual conditions, the thickness of the formed second flow channel 121a can be set according to actual conditions, flexible adjustment is realized, and the pressure resistance of the plate heat exchanger 100 can be improved. The flow partition plate unit 130 has a complete plane structure with completely fixed periphery, and is beneficial to bearing high pressure without deformation, and the flow partition plate unit 130 includes at least one flow partition plate 130a, the material of the flow partition plate affects the heat exchange efficiency and the compressive strength thereof, the number of the flow partition plates (the overall thickness of the flow partition plate unit 130) also affects the heat exchange efficiency and the compressive strength thereof, and the thickness of the formed flow partition plate unit 130 can be set according to the actual situation, so that flexible adjustment is realized, and the compressive property of the plate heat exchanger 100 can be improved.
The plate heat exchanger 100 provided by the present embodiment has at least the following beneficial effects:
in the plate heat exchanger 100 provided by this embodiment, the first flow channel 111a and the second flow channel 121a are formed with simple structures, the thicknesses of the first flow channel 111a and the second flow channel 121a can be flexibly set according to the actual pressure resistance requirement, and the thickness of the flow partition plate unit 130 can also be flexibly set according to the actual pressure resistance requirement, so that the pressure resistance of the plate heat exchanger 100 can be improved, and the heat exchange efficiency can be improved; the plate heat exchanger 100 provided by the embodiment also improves the heat exchange area to weight ratio and the heat exchange area to thickness ratio, and has a simple integral structure and low cost.
In a preferred embodiment, with continued reference to fig. 1, the plate heat exchanger 100 further includes a first baffle 140 and a second baffle 150.
The first baffle 140 is disposed at an outer side of the first plate unit 110 at an end portion and is fixedly connected to the first plate unit 110, and the first baffle 140, the first plate unit 110, and the flow partition plate unit 130 form the first flow channel 111 a. The first baffle 140 is arranged to protect the end of the entire plate heat exchanger 100, and the first baffle 140 may be fixedly connected to the first plate unit 110 at the end, and the first baffle 140, the first plate unit 110, and the flow dividing plate unit 130 may form the first flow channel 111a, so that the first flow channel 111a is sufficiently arranged, a flow path of a medium is increased, and heat exchange efficiency is improved.
The second baffle 150 is disposed at an outer side of the second plate unit 120 at an end portion and is fixedly connected to the second plate unit 120, and the second baffle 150, the second plate unit 120, and the flow partition plate unit 130 form the second flow channel 121 a. The second baffle 150 is arranged to protect the end of the entire plate heat exchanger 100, and the second baffle 150 may be fixedly connected to the second plate unit 120 at the end, and the second baffle 150, the second plate unit 120, and the flow dividing plate unit 130 may form a second flow channel 121a, so that the second flow channel 121a is sufficiently arranged, a flow path of a medium is increased, and heat exchange efficiency is improved.
Optionally, the thickness of the first baffle 140 and the second baffle 150 is thickened to facilitate the fixing (e.g., welding) of the fluid connectors, thereby better protecting the internal flow passages.
In a preferred embodiment, with reference to fig. 1, the first flow channel 111a and the second flow channel 121a are symmetrically disposed;
referring to fig. 2, the first flow channel 111a includes a first flow channel main body 111a1, and a first flow channel port 111a2 and a second flow channel port 111a3 which are disposed at a diagonal of the first plate unit 110, the first flow channel port 111a2 and the second flow channel port 111a3 are both communicated with the first flow channel main body 111a1, and a first through hole 112 and a second through hole 113 are disposed at the other diagonal of the first plate unit 110;
referring to fig. 3, the second flow channel 121a includes a second flow channel main body 121a1, and a third flow channel port 121a2 and a fourth flow channel port 121a3 disposed at a diagonal of the second plate unit 120, the third flow channel port 121a2 and the fourth flow channel port 121a3 are both communicated with the second flow channel main body 121a1, and a third through hole 122 and a fourth through hole 123 are disposed at the other diagonal of the second plate unit 120;
referring to fig. 4, four corners of the flow partition plate unit 130 are respectively provided with a first flow partition plate through hole 131, a second flow partition plate through hole 132, a third flow partition plate through hole 133 and a fourth flow partition plate through hole 134;
referring to fig. 1 to 4, the first channel opening 111a2, the first flow partition plate through hole 131 and the third through hole 122 are communicated, and the second channel opening 111a3, the third flow partition plate through hole 133 and the fourth through hole 123 are communicated, so that the first channel 111a is communicated;
the first through hole 112, the second flow partition plate through hole 132 and the third flow channel opening 121a2 are communicated, and the second through hole 113, the fourth flow partition plate through hole 134 and the fourth flow channel opening 121a3 are communicated, so that the plurality of second flow channels 121a are communicated.
Optionally, the shapes of the first flow passage main body 111a1 and the second flow passage main body 121a1 are both rectangular, and it should be understood that the shapes of the first flow passage main body 111a1 and the second flow passage main body 121a1 are not limited to the above shapes, and may be other shapes, and are not limited herein.
In a preferred embodiment, referring to fig. 5, a first hot fluid inlet 141 and a first cold fluid outlet 142 are disposed on the first baffle 140, the first hot fluid inlet 141 is communicated with the first channel opening 111a2, and the first cold fluid outlet 142 is communicated with the first through hole 112; referring to fig. 6, the second baffle 150 is provided with a first hot fluid outlet 151 and a first cold fluid inlet 152, the first hot fluid outlet 151 is communicated with the fourth through hole 123, and the first cold fluid inlet 152 is communicated with the fourth channel opening 121a 3.
Referring to fig. 1, 5 and 6, when the first baffle 140 is provided with the first hot fluid inlet 141 and the first cold fluid outlet 142, and the second baffle 150 is provided with the first hot fluid outlet 151 and the first cold fluid inlet 152, two-side access is realized, and the flow paths of the whole plate heat exchanger 100 are:
the hot fluid enters from a first hot fluid inlet 141 arranged on the first baffle plate 140, enters into the first flow channel 111a through a first flow channel opening 111a2, then flows out from a second flow channel opening 111a3, then sequentially passes through a third flow partition plate through hole 133 and a fourth through hole 123, and so on, and finally flows out from a first hot fluid outlet 151 arranged on the second baffle plate 150; meanwhile, after the hot fluid enters from the first hot fluid inlet 141 arranged on the first baffle 140, the hot fluid further passes through the first flow channel opening 111a2, the first flow partition plate through hole 131, the third flow partition plate through hole 122, and the first flow partition plate through hole 131, enters the next first flow channel 111a again, then flows out from the second flow channel opening 111a3, then the hot fluid passes through the third flow partition plate through hole 133 and the fourth flow partition plate through hole 123 in sequence, and so on, and finally flows out from the first hot fluid outlet 151 arranged on the second baffle 150. When there are a plurality of first flow channels 111a, the flow path of the thermal fluid is the same as above, and so on, which is not described herein again.
Cold fluid enters from a first cold fluid inlet 152 arranged on the second baffle 150, enters the second flow channel 121a through a fourth flow channel opening 121a3, flows out from a third flow channel opening 121a2, sequentially passes through a through hole of the second flow partition plate 130a and the first through hole 112, and so on, and finally flows out from a first cold fluid outlet 142 arranged on the first baffle 140; meanwhile, after the cold fluid enters from the first cold fluid inlet 152 arranged on the second baffle 150, the cold fluid further passes through the fourth runner opening 121a3, the fourth flow partition plate through hole 134, the second through hole 113, the fourth flow partition plate through hole 134 and the fourth runner opening 121a3 in sequence, enters the next second runner 121a again, then flows out from the third runner opening 121a2, then passes through the second flow partition plate 130a through hole and the first through hole 112 in sequence, and so on, and finally flows out from the first cold fluid outlet 142 arranged on the first baffle 140. When there are a plurality of second flow passages 121a, the flow path of the cold fluid is the same as above, and so on, which is not described herein again.
In a preferred embodiment, referring to fig. 7, a second hot fluid inlet 143 and a second hot fluid outlet 144 are provided on the first baffle 140, the second hot fluid inlet 143 is communicated with the first channel opening 111a2, and the second hot fluid outlet 144 is communicated with the second channel opening 111a 3; the first baffle 140 is further provided with a second cold fluid inlet 145 and a second cold fluid outlet 146, the second cold fluid inlet 145 is communicated with the second through hole 113, and the second cold fluid outlet 146 is communicated with the first through hole 112; referring to fig. 8, the second baffle 150 is a solid plate, that is, the second baffle 150 has no hole.
Referring to fig. 7 to 9, when the first baffle 140 is provided with a second hot fluid inlet 143, a second cold fluid outlet 146, a second hot fluid outlet 144, and a second cold fluid inlet 145, the same-side inlet and outlet are realized, and the flow paths of the entire plate heat exchanger 100 are:
the hot fluid enters from the second hot fluid inlet 143 arranged on the first baffle 140, enters the first flow channel 111a through the first flow channel opening 111a2, and then sequentially flows out through the second flow channel opening 111a3 and the second hot fluid outlet 144 arranged on the first baffle 140; meanwhile, after the hot fluid enters from the second hot fluid inlet 143 arranged on the first baffle 140, the hot fluid further passes through the first flow channel opening 111a2, the first flow partition plate through hole 131, the third flow partition plate through hole 122, and the first flow partition plate through hole 131, enters the next first flow channel 111a again, and then flows out from the second flow channel opening 111a3, and then the hot fluid flows out through the third flow partition plate through hole 133, the fourth flow hole 123, the third flow partition plate through hole 133, the second flow channel opening 111a3, and the second hot fluid outlet 144 arranged on the first baffle 140. When there are a plurality of first flow channels 111a, the flow path of the thermal fluid is the same as above, and so on, which is not described herein again.
Cold fluid enters from a second cold fluid inlet 145 arranged on the first baffle plate 140, enters the second flow channel 121a through the second through hole 113, the fourth flow partition plate through hole 134 and the fourth flow channel opening 121a3 in sequence, and then flows out through the third flow channel opening 121a2, the second flow partition plate 130a through hole, the first through hole 112 and a second cold fluid outlet 146 arranged on the first baffle plate 140 in sequence; meanwhile, after the cold fluid enters from the second cold fluid inlet 145 arranged on the first baffle 140, the cold fluid enters the first second flow channel 121a through the fourth flow channel opening 121a3, and when a part of the cold fluid passes through the fourth flow channel opening 121a3, the cold fluid sequentially passes through the fourth flow partition plate through hole 134, the second through hole 113, the fourth flow partition plate through hole 134 and the fourth flow channel opening 121a3, enters the next second flow channel 121a, then the cold fluid sequentially passes through the third flow channel opening 121a2, the second flow partition plate 130a through hole and the first through hole 112, and so on, and finally flows out through the second cold fluid outlet 146 arranged on the first baffle 140. When there are a plurality of second fluid passages 121a, the flow path of the cold fluid is the same as above, and so on, and will not be described herein again.
Referring to fig. 11 to 13, a third hot fluid inlet 147 and a third hot fluid outlet 148 are disposed on the first baffle 140, and the third hot fluid inlet 147 and the third hot fluid outlet 148 are disposed diagonally, the third hot fluid inlet 147 is communicated with the first channel opening 111a2, and the third hot fluid outlet 148 is communicated with the second channel opening 111a 3;
the second baffle 150 is provided with a third cold fluid inlet 153 and a third cold fluid outlet 154, the third cold fluid inlet 153 and the third cold fluid outlet 154 are diagonally arranged, the third cold fluid inlet 153 is communicated with the fourth runner port 121a3, and the third cold fluid outlet 154 is communicated with the third runner port 121a 2.
With continued reference to fig. 11 to 13, when the third hot fluid inlet 147 and the third hot fluid outlet 148 are provided on the first baffle 140, and the third cold fluid inlet 153 and the third cold fluid outlet 154 are provided on the second baffle 150, the flow paths of the entire plate heat exchanger 100 are:
the hot fluid enters from the third hot fluid inlet 147 arranged on the first baffle 140, enters the first flow channel 111a through the first flow channel opening 111a2, and then sequentially flows out from the second flow channel opening 111a3 and the third hot fluid outlet 148; meanwhile, after entering the first flow channel opening 111a2, the hot fluid further sequentially enters the first flow partition plate through hole 131, the third through hole 122, the first flow partition plate through hole 131 and the first flow channel opening 111a2, enters the next first flow channel 111a, and then sequentially flows out of the second flow channel opening 111a3, the third flow partition plate through hole 133, the fourth through hole 123, the third flow partition plate through hole 133, the second flow channel opening 111a3 and the third hot fluid outlet 148. When there are a plurality of first flow channels 111a, the flow path of the thermal fluid is the same as above, and so on, which is not described herein again.
Cold fluid enters from a third cold fluid inlet 153 arranged on the second baffle 150, enters the second flow channel 121a through a fourth flow channel opening 121a3, and then sequentially flows out from a third flow channel opening 121a2 and a third cold fluid outlet 154;
meanwhile, after entering the second flow channel opening 111a3, the cold fluid also sequentially enters the fourth flow partition plate through hole 134, the second through hole 113, the fourth flow partition plate through hole 134 and the fourth flow channel opening 121a3, enters the next second flow channel 121a, and then sequentially flows out of the third flow channel opening 121a2, the second flow partition plate through hole 132, the first through hole 112, the second flow partition plate through hole 132, the third flow channel opening 121a2 and the third cold fluid outlet 154. When there are a plurality of second flow passages 121a, the flow path of the cold fluid is the same as above, and so on, which is not described herein again.
Optionally, the first through hole 112, the second through hole 113, the third through hole 122, and the fourth through hole 123 are all circular, and the first flow partition plate through hole 131, the second flow partition plate through hole 132, the third flow partition plate through hole 133, and the fourth flow partition plate through hole 134 are all circular. It should be understood that the shapes of the first through hole 112, the second through hole 113, the third through hole 122, and the fourth through hole 123, and the shapes of the first flow partition plate through hole 131, the second flow partition plate through hole 132, the third flow partition plate through hole 133, and the fourth flow partition plate through hole 134 are not limited thereto, and are not limited thereto.
In a preferred embodiment, the first plate unit 110 and the flow partitioner unit 130 are welded by diffusion welding; the second plate unit 120 and the flow partitioning plate unit 130 are welded by diffusion welding; the first baffle 140 and the first sheet unit 110 are welded by diffusion welding; the second barrier 150 and the second sheet unit 120 are welded by diffusion welding.
The diffusion welding is a solid state welding method which pressurizes a workpiece at a high temperature but does not generate visible deformation and relative movement, and not only is the quality of a joint high, large-area welding can be performed, the welding precision is high, and deformation is small by using the diffusion welding, but also the sealing performance of the first flow channel 111a and the second flow channel 121a is ensured by using the diffusion welding.
In one embodiment, referring to fig. 1, the first plate unit 110 includes a first plate 110 a; in another embodiment, the first sheet unit 110 includes a plurality of first sheets 110a, the plurality of first sheets 110a are stacked, and two adjacent first sheets 110a are welded by diffusion welding.
When a plate heat exchanger 100 with high pressure resistance needs to be manufactured, a first plate 110a with a preset thickness can be selected according to actual requirements, or a plurality of first plates 110a are stacked to form a first plate unit 110 with a preset thickness, and the stacked first plates 110a are welded through diffusion welding, so that the structure is firm. The thickness of first flow channel 111a can be flexibly formulated according to the requirement of actual pressure resistance by the arrangement, so that the pressure resistance of plate heat exchanger 100 can be improved, and the heat exchange efficiency is improved.
In one embodiment, referring to fig. 1, the second plate unit 120 includes a second plate 120 a; in another embodiment, the second sheet unit 120 includes a plurality of second sheets 120a, the plurality of second sheets 120a are stacked, and two adjacent second sheets 120a are welded by diffusion welding.
When a plate heat exchanger 100 with high pressure resistance needs to be manufactured, the second plate 120a with the preset thickness can be selected according to actual requirements, or a plurality of second plates 120a are stacked to form a second plate unit 120 with the preset thickness, and the second plates 120a stacked in a stacking manner are welded by diffusion welding, so that the structure is firm. The thickness of first flow channel 111a can be flexibly formulated according to the requirement of actual pressure resistance by the arrangement, so that the pressure resistance of plate heat exchanger 100 can be improved, and the heat exchange efficiency is improved.
In a preferred embodiment, referring to fig. 4 and 10, the flow baffle unit 130 includes a flow baffle 130a, two side surfaces of the flow baffle 130a are respectively provided with a plurality of protrusions 135, and the plurality of protrusions 135 are regularly or irregularly arranged. The protrusion 135 may increase a contact area between the fluid and the flow isolating plate 130a, thereby improving heat exchange efficiency.
Optionally, each side of the flow partitioning plate 130a is provided with a plurality of rows of protrusion units, each row of protrusion units includes a plurality of protrusions 135, and two adjacent rows of protrusion units are arranged in a staggered manner.
In other embodiments, the flow partitioner unit 130 includes a plurality of flow partitioners 130a stacked one on top of another, and two adjacent flow partitioners 130a are welded by diffusion welding.
In summary, the present embodiment provides a plate heat exchanger 100, including: the plate comprises a plurality of first plate units 110, a plurality of second plate units 120 and a plurality of flow partition plate units 130, wherein the first plate units 110 and the second plate units 120 are alternately stacked, the flow partition plate units 130 are arranged between the adjacent first plate units 110 and the adjacent second plate units 120, and the first plate units 110 and the second plate units 120 are fixedly connected with the flow partition plate units 130; a first through cavity 111 is formed in the first plate unit 110, a first flow channel 111a is formed in the first through cavity 111 through the flow partition plate units 130 on the two sides, a second through cavity 121 is formed in the second plate unit 120, a second flow channel 121a is formed in the second through cavity 121 through the flow partition plate units 130 on the two sides, the first flow channels 111a are communicated with one another, and the second flow channels 121a are communicated with one another; the first plate unit 110 includes at least one first plate 110a, the second plate unit 120 includes at least one second plate 120a, and the flow partitioner unit 130 includes at least one flow partitioner 130 a. The plate heat exchanger 100 that this embodiment provided, its simple structure that forms first flow path 111a and second flow path 121a, and the thickness of first flow path 111a and second flow path 121a can be based on the demand of actual resistance to pressure and formulate in a flexible way, the thickness of flow partition plate unit 130 also can be based on the demand of actual resistance to pressure and formulate in a flexible way, and then can improve plate heat exchanger 100's pressure resistance, heat exchange efficiency is improved, plate heat exchanger 100 that this embodiment provided has still improved heat transfer area and weight ratio and heat transfer area and thickness ratio, and overall structure is simple, low cost.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A plate heat exchanger, comprising: the heat exchanger comprises a plurality of first plate units, a plurality of second plate units and a plurality of flow partition plate units, wherein the first plate units and the second plate units are alternately stacked, the flow partition plate units are arranged between the adjacent first plate units and second plate units, and the first plate units and the second plate units are fixedly connected with the flow partition plate units;
the first plate unit is provided with a first through cavity, the first through cavity forms a first flow channel through the flow partition plate units on the two sides, the second plate unit is provided with a second through cavity, the second through cavity forms a second flow channel through the flow partition plate units on the two sides, the first flow channels are communicated, and the second flow channels are communicated;
the first plate unit comprises at least one first plate, the second plate unit comprises at least one second plate, and the flow partition plate unit comprises at least one flow partition plate.
2. A plate heat exchanger according to claim 1, further comprising:
the first baffle is arranged on the outer side of the first plate unit at the end part and fixedly connected with the first plate unit, and the first baffle, the first plate unit and the flow partition plate unit form the first flow channel;
the second baffle is arranged on the outer side of the second plate unit at the end part and fixedly connected with the second plate unit, and the second baffle, the second plate unit and the flow partition plate unit form the second flow channel.
3. A plate heat exchanger according to claim 2, wherein the first and second flow channels are arranged symmetrically;
the first channel comprises a first channel main body, a first channel opening and a second channel opening, wherein the first channel opening and the second channel opening are arranged on one diagonal of the first plate unit, the first channel opening and the second channel opening are both communicated with the first channel main body, and a first through hole and a second through hole are arranged on the other diagonal of the first plate unit;
the second flow channel comprises a second flow channel main body, and a third flow channel opening and a fourth flow channel opening which are arranged at one diagonal of the second plate piece unit, the third flow channel opening and the fourth flow channel opening are both communicated with the second flow channel main body, and a third through hole and a fourth through hole are arranged at the other diagonal of the second plate piece unit;
the four corners of the flow partition plate unit are respectively provided with a first flow partition plate through hole, a second flow partition plate through hole, a third flow partition plate through hole and a fourth flow partition plate through hole;
the first flow channel opening, the first flow partition plate through hole and the third through hole are communicated, and the second flow channel opening, the third flow partition plate through hole and the fourth through hole are communicated;
the first through hole, the second flow partition plate through hole and the third flow channel opening are communicated, and the second through hole, the fourth flow partition plate through hole and the fourth flow channel opening are communicated.
4. The plate heat exchanger of claim 3 wherein the first baffle is provided with a first hot fluid inlet and a first cold fluid outlet, the first hot fluid inlet is communicated with the first fluid channel port, and the first cold fluid outlet is communicated with the first through hole;
and a first hot fluid outlet and a first cold fluid inlet are arranged on the second baffle, the first hot fluid outlet is communicated with the fourth through hole, and the first cold fluid inlet is communicated with the fourth runner port.
5. The plate heat exchanger of claim 3 wherein the first baffle has a second thermal fluid inlet and a second thermal fluid outlet, the second thermal fluid inlet being in communication with the first flow port, the second thermal fluid outlet being in communication with the second flow port;
a second cold fluid inlet and a second cold fluid outlet are further formed in the first baffle, the second cold fluid inlet is communicated with the second through hole, and the second cold fluid outlet is communicated with the first through hole;
the second baffle is a solid plate.
6. The plate heat exchanger of claim 3 wherein the first baffle has a third thermal fluid inlet and a third thermal fluid outlet, the third thermal fluid inlet and the third thermal fluid outlet being diagonally disposed, the third thermal fluid inlet being in communication with the first flow port, the third thermal fluid outlet being in communication with the second flow port;
and a third cold fluid inlet and a third cold fluid outlet are arranged on the second baffle, the third cold fluid inlet and the third cold fluid outlet are arranged in a diagonal manner, the third cold fluid inlet is communicated with the fourth runner port, and the third cold fluid outlet is communicated with the third runner port.
7. The plate heat exchanger of claim 2, wherein the first plate element and the cutoff plate element are welded by diffusion welding;
the second plate sheet unit and the flow partition plate unit are welded through diffusion welding;
the first baffle plate and the first plate unit are welded through diffusion welding;
the second baffle plate and the second plate unit are welded through diffusion welding.
8. A plate heat exchanger according to claim 1, wherein the first plate unit comprises one first plate;
or the first plate unit comprises a plurality of first plates which are stacked, and two adjacent first plates are welded through diffusion welding.
9. A plate heat exchanger according to claim 1, wherein the second plate unit comprises one second plate;
or the second plate unit comprises a plurality of second plates which are stacked, and two adjacent second plates are welded through diffusion welding.
10. The plate heat exchanger according to claim 1, wherein the flow partitioning plate unit comprises a flow partitioning plate, wherein a plurality of protrusions are respectively formed on both side surfaces of the flow partitioning plate, and the plurality of protrusions are regularly or irregularly arranged.
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| CN202123388668.2U CN216558438U (en) | 2021-12-29 | 2021-12-29 | Plate type heat exchanger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117685804A (en) * | 2024-02-04 | 2024-03-12 | 西安交通大学 | Multi-header split-flow annular printed circuit board heat exchanger |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117685804A (en) * | 2024-02-04 | 2024-03-12 | 西安交通大学 | Multi-header split-flow annular printed circuit board heat exchanger |
| CN117685804B (en) * | 2024-02-04 | 2024-04-30 | 西安交通大学 | Multi-header split-flow annular printed circuit board heat exchanger |
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