Heat exchange plate structure and plate heat exchanger

Abstract

The invention provides a heat exchange plate structure and a plate heat exchanger, relates to the technical field of heat exchangers, and solves the technical problem that the performance of the heat exchanger is reduced due to non-uniform flow distribution of the heat exchanger in the prior art. The heat exchange plate structure and the plate heat exchanger are provided with a plurality of first inter-plate channels and a plurality of second inter-plate channels which are sequentially arranged at intervals, two sets of inlet and outlet angle hole channels are further formed in the heat exchange plate structure, and the two sets of inlet and outlet angle hole channels are used for being communicated with the first inter-plate channels and the second inter-plate channels respectively. The heat exchange plate structure is further provided with at least one distribution channel, and the at least one distribution channel is used for communicating the at least two first inter-plate channels or the at least two second inter-plate channels. According to the heat exchange plate structure and the plate heat exchanger, the uniformity of flow distribution in the heat exchange plate structure is improved, and the heat exchange performance of the heat exchanger is improved.

Description

Technical Field

[0001] The present invention relates to the technical field, and in particular to a heat exchange plate structure and a plate heat exchanger. Background Art

[0002] Plate heat exchangers and many other types of heat exchangers with parallel flow distribution structures are currently widely used in petrochemical, aerospace, refrigeration and heating industries due to their advantages such as high heat transfer efficiency, light weight, small space occupation, compact structure and easy maintenance.

[0003] At present, this type of heat exchanger has the problem of uneven distribution of fluid in different channels in actual use. Especially when used as an evaporator, the uneven distribution of refrigerant flow is very high (uneven flow distribution refers to the different proportions and flow rates of gas and liquid phase fluids in different heat exchange channels), which usually forms a large overheating area. The heat transfer coefficient in the overheating area is low, and the temperature difference between the refrigerant and the heat source fluid is small, resulting in a decrease in the performance of the heat exchanger. Summary of the invention

[0004] The purpose of the present invention is to provide a heat exchange plate structure and a plate heat exchanger to solve the technical problem of uneven heat exchanger flow distribution in the prior art leading to reduced heat exchanger performance. The preferred technical solutions among the many technical solutions provided by the present invention can produce a number of technical effects as described below.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The heat exchange plate structure provided by the present invention comprises a plurality of first inter-plate channels and a plurality of second inter-plate channels which are sequentially arranged at intervals, and two groups of inlet and outlet corner hole channels are further arranged on the heat exchange plate structure, and the two groups of inlet and outlet corner hole channels are respectively used to connect the first inter-plate channels and the second inter-plate channels;

[0007] The heat exchange plate structure is further provided with at least one distribution channel, and the at least one distribution channel is used to connect at least two of the first inter-plate channels or at least two of the second inter-plate channels.

[0008] Optionally, the heat exchange plate structure includes a first plate and a second plate, the first plate and the second plate are stacked in sequence, the first inter-plate channel is formed between the adjacent lower end surface of the first plate and the upper end surface of the second plate, and the second inter-plate channel is formed between the adjacent lower end surface of the second plate and the adjacent upper end surface of the first plate.

[0009] Optionally, at least one of the first plates is provided with a first distribution hole, and at least one of the adjacent second plates is provided with a second distribution hole, and the first distribution hole and the second distribution hole are provided correspondingly;

[0010] A first flange structure is provided around the first distribution hole on at least one of the first plates, and the first flange structure is sealed and connected between the first plate and the second plate to connect the first distribution hole and the second distribution hole to form the distribution channel.

[0011] Optionally, a second flange structure is provided around the second distribution hole on at least one of the second plates, and the first flange structure and the second flange structure are sealed and connected.

[0012] Optionally, the first flange structure and the second flange structure are arranged in the same direction.

[0013] Optionally, the first flanging structure and the second flanging structure are arranged opposite to each other.

[0014] Optionally, the first distribution hole and the second distribution hole are circular holes, rectangular holes, square holes or keyway holes.

[0015] Optionally, the distribution channels are arranged in a plurality of groups, and the sizes of the distribution channels in the plurality of groups are the same or different; and / or the distribution channels in the plurality of groups are arranged at equal intervals or at unequal intervals;

[0016] And / or, several groups of the distribution channels are arranged in multiple rows, and the spacing between the multiple rows of distribution channels is the same or different; and / or, the sizes of several groups of the distribution channels are distributed in an increasing, decreasing, first increasing and then decreasing, or first decreasing and then increasing manner.

[0017] Optionally, a temperature measuring component is provided in the distribution channel.

[0018] A plate heat exchanger comprises the heat exchange plate structure as described above.

[0019] Optionally, it further comprises an upper end plate and a lower end plate, and the heat exchange plate structure is arranged between the upper end plate and the lower end plate;

[0020] At least one of the distribution channels is used to connect all of the first inter-plate channels or all of the second inter-plate channels.

[0021] Optionally, two groups of inlet and outlet joints are provided on the upper end plate, and the two groups of inlet and outlet joints are respectively provided corresponding to the two groups of inlet and outlet corner hole channels; and an inlet and outlet sealing boss for closing the inlet and outlet corner hole channels is provided on the lower end plate.

[0022] Optionally, the upper end plate and the lower end plate are provided with distribution sealing bosses corresponding to the distribution channels.

[0023] The beneficial effects of the present invention are as follows: the heat exchange plate structure and the plate heat exchanger provided by the present invention, the heat exchange plate structure has a plurality of first inter-plate channels and a plurality of second inter-plate channels arranged in sequence, the plurality of first inter-plate channels are used to circulate the first medium, the plurality of second inter-plate channels are used to circulate the second medium, the heat of the first medium and the second medium complete the heat transfer rod in the heat exchange plate structure to achieve heat exchange; the heat exchange plate structure is provided with two groups of inlet and outlet corner hole channels, the two groups of inlet and outlet corner hole channels are respectively used to connect the first inter-plate channel and the second inter-plate channel, the two groups of inlet and outlet corner hole channels can realize the entry and outflow of the first medium in the first inter-plate channel and the second medium in the second inter-plate channel, so as to achieve heat exchange. To achieve heat exchange; the heat exchange plate structure is also provided with at least one distribution channel, and at least one distribution channel is used to connect at least two of the first inter-plate channels or at least two of the second inter-plate channels. By providing at least one distribution channel, at least one distribution channel can connect at least two of the first inter-plate channels or at least two of the second inter-plate channels, so that the first media in at least two of the first inter-plate channels can be mixed, or the second media in at least two of the second inter-plate channels can be mixed, so as to improve the flow distribution of the first medium or the second medium, improve the uniformity of the flow distribution in the heat exchange plate structure, improve the heat exchange performance of the heat exchanger, and solve the problem of performance degradation caused by uneven heat distribution of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 is a three-dimensional diagram of the first plate of the present invention;

[0026] Figure 2 is a top view of the first plate of the present invention;

[0027] Figure 3 is a cross-sectional view taken along line AA of the first plate of the present invention;

[0028] Figure 4 is a three-dimensional diagram of a second plate of the present invention;

[0029] Figure 5 is a top view of the second plate of the present invention;

[0030] Figure 6is a cross-sectional view of the second plate BB of the present invention;

[0031] Figure 7 It is a structural schematic diagram of the heat exchange plate structure of the present invention;

[0032] Figure 8 is a three-dimensional diagram of a plate heat exchanger according to embodiment 1 of the present invention;

[0033] Fig. 9 is a top view of a plate heat exchanger according to embodiment 1 of the present invention;

[0034] Fig.10 is a cross-sectional view of the plate heat exchanger CC of Example 1 of the present invention;

[0035] Fig.11 It is a schematic diagram of a partially enlarged structure of a plate heat exchanger in Example 1 of the present invention;

[0036] Fig.12 This is a DD cross-sectional view of the plate heat exchanger of Example 1 of the present invention;

[0037] Fig.13 is a cross-sectional view of a plate heat exchanger (temperature measurement component) according to Example 1 of the present invention;

[0038] Fig.14 is a top view of a plate heat exchanger according to embodiment 2 of the present invention;

[0039] Fig.15 This is a DD cross-sectional view of a plate heat exchanger according to Embodiment 2 of the present invention;

[0040] Fig.16 is a cross-sectional view of the plate heat exchanger EE of Example 2 of the present invention;

[0041] Fig.17 It is a schematic diagram of a partially enlarged structure of a plate heat exchanger in Example 2 of the present invention;

[0042] Fig.18 Schematic diagram of the shape and layout structure of the first distribution hole or the second distribution hole of the present invention (I);

[0043] Fig.19 Schematic diagram of the shape and layout structure of the first distribution hole or the second distribution hole of the present invention (II);

[0044] Fig. 20 Schematic diagram of the shape and layout structure of the first distribution hole or the second distribution hole of the present invention (III);

[0045] Fig.21 Schematic diagram (IV) of the shape and layout structure of the first distribution hole or the second distribution hole of the present invention;

[0046] Fig. 22Schematic diagram of the shape and layout structure of the first distribution hole or the second distribution hole of the present invention (V);

[0047] Fig.23 Schematic diagram (VI) of the shape and layout structure of the first distribution hole or the second distribution hole of the present invention;

[0048] Fig.24 Schematic diagram of the shape and layout structure of the first distribution hole or the second distribution hole of the present invention (VII);

[0049] Fig.25 Schematic diagram (eight) of the shape and layout structure of the first distribution hole or the second distribution hole of the present invention.

[0050] In the figure:

[0051] 100, heat exchange plate structure; 200, upper end plate; 300, lower end plate; 400, inlet and outlet joints; 500, temperature measurement component;

[0052] 110, first plate; 111, second plate; 112, second annular boss; 113, first annular boss; 114, first inter-plate channel; 115, second inter-plate channel;

[0053] 116, inlet and outlet corner hole channel; 117, first outlet corner hole; 118, first inlet corner hole; 119, second inlet corner hole;

[0054] 120, second corner hole; 121, distribution channel; 122, first distribution hole; 123, second distribution hole; 124, first flange structure; 125, second flange structure;

[0055] 310. Inlet and outlet sealing boss; 311. Distribution sealing boss. DETAILED DESCRIPTION

[0056] Please refer to the attached figure below Figure 1 to Figure 25And the text content understands the content of the present invention and the difference between the present invention and the prior art. The following is a further detailed description of the technical solution (including the preferred technical solution) of the present invention by means of the accompanying drawings and the enumeration of some optional embodiments of the present invention. It should be noted that: any technical feature and any technical solution in the present embodiment are one or more of a variety of optional technical features or optional technical solutions. In order to describe the need for brevity, it is impossible to exhaustively list all the alternative technical features and alternative technical solutions of the present invention in this document, and it is not convenient for the implementation of each technical feature to emphasize that it is one of the multiple optional implementations, so those skilled in the art should know that: any technical means provided by the present invention can be replaced or any two or more technical means or technical features provided by the present invention can be combined with each other to obtain a new technical solution. Any technical feature and any technical solution in the present embodiment do not limit the scope of protection of the present invention. The scope of protection of the present invention should include any alternative technical solutions that can be thought of by those skilled in the art without creative work and new technical solutions obtained by combining any two or more technical means or technical features provided by the present invention.

[0057] In the description of the present invention, it should be noted that, unless otherwise specified, "multiple" means two or more than two; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0058] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0059] The present invention provides a heat exchange plate structure and a plate heat exchanger which can improve the uniformity of flow distribution in the heat exchange plate structure and the heat exchange performance of the heat exchanger.

[0060] Combine the following Figure 1 to Figure 25 The technical solution provided by the present invention is described in more detail.

[0061] The present invention provides a heat exchange plate structure 100, wherein the heat exchange plate structure 100 has a plurality of first inter-plate channels 114 and a plurality of second inter-plate channels 115 which are sequentially arranged at intervals, and two groups of inlet and outlet corner hole channels 116 are further arranged on the heat exchange plate structure 100, and the two groups of inlet and outlet corner hole channels 116 are respectively used to connect the first inter-plate channels 114 and the second inter-plate channels 115;

[0062] The heat exchange plate structure 100 is further provided with at least one distribution channel 121 , and the at least one distribution channel 121 is used to connect at least two of the first inter-plate channels 114 or at least two of the second inter-plate channels 115 .

[0063] The heat exchange plate structure 100 provided by the present invention has a plurality of first inter-plate channels 114 and a plurality of second inter-plate channels 115 arranged in sequence at intervals, wherein the plurality of first inter-plate channels 114 are used to circulate a first medium, and the plurality of second inter-plate channels 115 are used to circulate a second medium, and the heat of the first medium and the second medium completes heat transfer in the heat exchange plate structure 100 to achieve heat exchange; the heat exchange plate structure 100 is provided with two groups of inlet and outlet corner hole channels 116, and the two groups of inlet and outlet corner hole channels 116 are respectively used to connect the plurality of first inter-plate channels 114 and the plurality of second inter-plate channels 115, and the two groups of inlet and outlet corner hole channels 116 can realize the entry and outflow of the first medium in the first inter-plate channels 114 and the second medium in the second inter-plate channels 115, thereby achieving Now heat exchange; the heat exchange plate structure 100 is also provided with at least one distribution channel 121, and at least one distribution channel 121 is used to connect at least two of the first inter-plate channels 114 or at least two of the second inter-plate channels 115. By providing at least one distribution channel 121, at least one distribution channel 121 can connect at least two of the first inter-plate channels 114 or at least two of the second inter-plate channels 115, so that the first media in at least two of the first inter-plate channels 114 can be mixed, or the second media in at least two of the second inter-plate channels 115 can be mixed, so as to improve the flow distribution of the first medium or the second medium, improve the uniformity of the flow distribution in the heat exchange plate structure 100, improve the heat exchange performance of the heat exchanger, and solve the problem of performance degradation caused by uneven heat distribution of the heat exchanger.

[0064] It should be noted that each group of the inlet and outlet corner hole channels 116 includes an inlet corner hole channel and an outlet corner hole channel. The inlet corner hole channel is used for the medium to flow in, and the outlet corner hole channel is used for the medium to flow out. Specifically, the inlet and outlet corner hole channels 116 connected to the first inter-plate channel 114 include a first inlet corner hole channel and a first outlet corner hole channel, and the inlet and outlet corner hole channels 116 connected to the second inter-plate channel 115 include a second inlet corner hole channel and a second outlet corner hole channel. The first medium passes through the first inlet corner hole channel and the first inter-plate channel 114 and is discharged from the first outlet corner hole channel; the second medium passes through the second inlet corner hole 119 channel into the second inter-plate channel 115 and is discharged from the second outlet corner hole 120 channel.

[0065] Specifically, the first medium and the second medium are water and fluorine, respectively.

[0066] In some embodiments of the present invention, the heat exchange plate structure 100 includes a first plate 110 and a second plate 111, and the first plate 110 and the second plate 111 are stacked in sequence, and the first inter-plate channel 114 is formed between the adjacent lower end surfaces of the first plate 110 and the upper end surfaces of the second plate 111, and the second inter-plate channel 115 is formed between the adjacent lower end surfaces of the second plate 111 and the adjacent upper end surfaces of the first plate 110.

[0067] In some of the above embodiments of the present invention, the first plate 110 and the second plate 111 are stacked in sequence with intervals, and the first inter-plate channel 114 is formed between the adjacent lower end surfaces of the first plate 110 and the upper end surfaces of the second plate 111, and the second inter-plate channel 115 is formed between the adjacent lower end surfaces of the second plate 111 and the adjacent upper end surfaces of the first plate 110, that is, the first inter-plate channel 114 and the second inter-plate channel 115 are arranged in sequence with intervals, and the first inter-plate channel 114 and the second inter-plate channel 115 can realize heat transfer through the first plate 110 and the second plate 111.

[0068] Specifically, the first plate 110 and the second plate 111 are both provided with a first corner exit hole 117, a first corner entrance hole 118, a second corner entrance hole 119 and a second corner exit hole 120, wherein a second annular boss 112 is provided on the outer periphery of the first corner exit hole 117 and the first corner entrance hole 118 on the second plate 111, and the second annular boss 112 is sealed between the upper end surface of the second plate 111 and the lower end surface of the first plate 110, so that the second corner entrance hole 119 and the second corner exit hole 120 on the first plate 110 are both connected to the first inter-plate channel 114 between the upper end surface of the second plate 111 and the lower end surface of the first plate 110.

[0069] Similarly, a first annular boss 113 is provided on the outer periphery of the second angle entrance hole 119 and the second angle exit hole 120 on the first plate 110, and the first annular boss 113 is sealed between the upper end surface of the first plate 110 and the lower end surface of the second plate 111, so that the first angle exit hole 117 and the first angle entrance hole 118 on the first plate 110 are connected to the second inter-plate channel 115 between the upper end surface of the first plate 110 and the lower end surface of the second plate 111.

[0070] The first corner holes 117 on the first plates 110 and the second plates 111 are connected to form a first corner entrance hole channel, and the first corner entrance holes 118 on the first plates 110 and the second plates 111 are connected to form a first corner exit hole channel; the first corner exit holes on the first plates 110 and the second plates 111 are connected to form a first corner exit hole channel, and the second corner exit holes 120 on the first plates 110 and the second plates 111 are connected to form a second corner exit hole channel.

[0071] In some embodiments of the present invention, at least one of the first plates 110 is provided with a first distribution hole 122, and at least one of the adjacent second plates 111 is provided with a second distribution hole 123, and the first distribution hole 122 and the second distribution hole 123 are provided correspondingly;

[0072] A first flange structure 124 is provided around the first distribution hole 122 on at least one of the first plates 110 , and the first flange structure 124 is sealed between the first plate 110 and the second plate 111 to connect the first distribution hole 122 and the second distribution hole 123 to form the distribution channel 121 .

[0073] In some of the above-mentioned embodiments of the present invention, a first distribution hole 122 and a second distribution hole 123 are respectively provided on the adjacent first plate 110 and the second plate 111, and a first flange structure 124 is provided on the first plate 110, and the first flange structure 124 is sealed and connected between the first plate 110 and the second plate 111, so that the first inter-plate channel 114 and the second inter-plate channel 115 can be blocked by the first flange structure 124, so that the two adjacent second inter-plate channels 115 can be connected through the first distribution hole 122 and the second distribution hole 123, the first distribution hole 122 and the second distribution hole 123 form the distribution channel 121, and the media in the two second inter-plate channels 115 can be mixed, thereby improving the uniformity of the flow distribution in the heat exchange plate structure 100 and improving the heat exchange performance of the heat exchanger.

[0074] In some embodiments of the present invention, a second flange structure 125 is disposed around the second distribution hole 123 on at least one of the second plates 111 , and the first flange structure 124 and the second flange structure 125 are sealed and connected.

[0075] In some of the above-mentioned embodiments of the present invention, a second flange structure 125 is provided on at least one of the second plates 111, and the first flange structure 124 and the second flange structure 125 are sealed and connected, and the first inter-plate channel 114 and the second inter-plate channel 115 are blocked by the first flange structure 124 and the second flange structure 125, and two adjacent second inter-plate channels 115 can be connected through the first distribution hole 122 and the second distribution hole 123, and the first distribution hole 122 and the second distribution hole 123 form the distribution channel 121, and the media in the two second inter-plate channels 115 can be mixed, thereby improving the uniformity of flow distribution in the heat exchange plate structure 100 and improving the heat exchange performance of the heat exchanger.

[0076] It should be noted that the first flange structure 124 and the second flange structure 125 can be formed by stamping, and can be stamped integrally with the first plate 110 and the second plate 111. The processing is simple, does not require additional consumables, is low in cost, and can effectively ensure production efficiency.

[0077] In some embodiments of the present invention, the first flange structure 124 and the second flange structure 125 are arranged in the same direction.

[0078] In some of the above-mentioned embodiments of the present invention, the first flange structure 124 and the second flange structure 125 are arranged in the same direction, so that after the first flange structure 124 and the second flange structure 125 are sealed and connected, the first flange structure 124 and the second flange structure 125 extend into the first inter-plate channel 114 or the second inter-plate channel 115, thereby playing a role in flow disturbance, making the first medium or the second medium mixed more evenly, thereby improving the uniformity of flow distribution in the heat exchange plate structure 100 and improving the heat exchange performance of the heat exchanger.

[0079] It should be noted that when the first flange structure 124 and the second flange structure 125 are both turned downward, the first flange structure 124 and the second flange structure 125 extend into the second inter-plate channel 115. When the second medium in the second inter-plate channel 115 flows, it will achieve a better turbulence effect under the action of the first flange structure 124 and the second flange structure 125, thereby improving the flow distribution and making it more uniform.

[0080] It is understandable that when the first flange structure 124 and the second flange structure 125 are of different sizes, different through holes are opened and then stamped separately so that the first flange structure 124 and the second flange structure 125 can be sealed and connected by welding.

[0081] In some embodiments of the present invention, the first flange structure 124 and the second flange structure 125 are arranged opposite to each other.

[0082] In some of the above-mentioned embodiments of the present invention, the first flange structure 124 and the second flange structure 125 are arranged relative to each other. After the first flange structure 124 and the second flange structure 125 are sealed and connected, the purpose of isolating the first inter-plate channel 114 and the second inter-plate channel 115 can be achieved, and the connection between two adjacent first inter-plate channels 114 or two second inter-plate channels 115 can be achieved.

[0083] It can be understood that the first flange structure 124 and the second flange structure 125 have the same size, are formed by opening the same through hole, and then are stamped once separately with different stamping directions, so that the first flange structure 124 and the second flange structure 125 can be sealed and connected by welding.

[0084] It should be noted that, in order to ensure the sealing effect of the first flange structure 124 and the second flange structure 125, the size and shape of the first flange structure 124 and the second flange structure 125 can be adjusted as needed. For example, the first flange structure 124 and the second flange structure 125 both include an inclined section and a horizontal section, the first flange structure 124 and the horizontal section of the second flange structure 125 are connected, and the length, height, inclination angle, etc. of the horizontal section and the inclined section can be appropriately adjusted to meet the needs of heat exchange fin structures of different sizes.

[0085] Optionally, the first flange structure 124 and the second flange structure 125 are L-shaped structures.

[0086] Preferably, the first flange structure 124 and the second flange structure 125 are symmetrically arranged.

[0087] In some embodiments of the present invention, the first distribution hole 122 and the second distribution hole 123 are circular holes, rectangular holes, square holes or keyway holes.

[0088] In some embodiments of the present invention, the distribution channels 121 are provided in several groups, and the sizes of the distribution channels 121 in the several groups are the same or different;

[0089] And / or, the plurality of groups of distribution channels 121 are arranged at equal intervals or at unequal intervals;

[0090] And / or, the plurality of groups of distribution channels 121 are arranged in multiple rows, and the spacing between the multiple rows of distribution channels 121 is the same or different;

[0091] And / or, the sizes of the plurality of distribution channels 121 are distributed in an increasing, decreasing, first increasing and then decreasing, or first decreasing and then increasing manner.

[0092] In some embodiments of the present invention, a temperature measuring component 500 is disposed in the distribution channel 121 .

[0093] In some of the above embodiments of the present invention, by setting a temperature measuring component 500 in the distribution channel 121, the temperature in the first inter-board channel 114 or the second inter-board channel 115 can be measured, thereby realizing heat monitoring in different inter-board channels.

[0094] Optionally, the temperature measuring component 500 is a thermocouple. The temperature measuring component 500 can be inserted into the interior from the upper end plate 200 or the lower end plate 300 and sealed to meet the temperature measurement requirements.

[0095] The present invention provides a plate heat exchanger, comprising the heat exchange plate structure 100 as described above.

[0096] The plate heat exchanger provided by the present invention includes the heat exchange plate structure 100 as described above, and has the technical effect of improving the uniformity of flow distribution in the heat exchange plate structure 100 and improving the heat exchange performance of the heat exchanger.

[0097] In some embodiments of the present invention, an upper end plate 200 and a lower end plate 300 are further included, and the heat exchange plate structure 100 is arranged between the upper end plate 200 and the lower end plate 300; at least one distribution channel 121 is used to connect all the first inter-plate channels 114 or all the second inter-plate channels 115.

[0098] In some of the above-mentioned embodiments of the present invention, by setting the upper end plate 200 and the lower end plate 300, the distribution channel 121 can connect all the first inter-plate channels 114 or the second inter-plate channels 115, thereby ensuring that the first medium in all the first inter-plate channels 114 or the second medium in all the second inter-plate channels 115 can be effectively mixed, thereby improving the uniformity of the flow distribution in the heat exchanger and improving the heat exchange performance of the heat exchanger.

[0099] In some embodiments of the present invention, two groups of inlet and outlet joints 400 are provided on the upper end plate 200, and the two groups of inlet and outlet joints 400 are respectively provided corresponding to the two groups of inlet and outlet corner holes; the lower end plate 300 is provided with an inlet and outlet sealing boss 310 for closing the inlet and outlet corner hole channel 116.

[0100] In some of the above-mentioned embodiments of the present invention, an inlet and outlet joint 400 is provided on the upper end plate 200, and the inlet and outlet joint 400 and the inlet and outlet corner holes are provided correspondingly. An inlet and outlet sealing boss 310 for closing the inlet and outlet corner hole channel 116 is provided on the lower end plate 300 to ensure the separate sealing of the first inter-plate channel 114 and the second inter-plate channel 115.

[0101] In some embodiments of the present invention, distribution sealing bosses 311 corresponding to the distribution channels 121 are provided on the upper end plate 200 and the lower end plate 300 .

[0102] In some of the above embodiments of the present invention, the distribution sealing boss 311 is used to seal the distribution channel 121 to ensure the sealing of the distribution channel 121 after it is connected to all the first inter-plate channels 114 or all the second inter-plate channels 115 .

[0103] Embodiment 1:

[0104] The plate heat exchanger provided by the utility model comprises an upper end plate 200 , a lower end plate 300 and a heat exchange plate structure 100 , wherein the heat exchange plate structure 100 is arranged between the upper end plate 200 and the lower end plate 300 .

[0105] The heat exchange plate structure 100 has a plurality of first inter-plate channels 114 and a plurality of second inter-plate channels 115 which are arranged in sequence and at intervals. Two groups of inlet and outlet corner hole channels 116 are also arranged on the heat exchange plate structure 100. The two groups of inlet and outlet corner hole channels 116 are used to connect the first inter-plate channels 114 and the second inter-plate channels 115 respectively.

[0106] The heat exchange plate structure 100 is further provided with five distribution channels 121 , and the five distribution channels 121 are used to connect all the second inter-plate channels 115 .

[0107] Furthermore, the heat exchange plate structure 100 includes a first plate 110 and a second plate 111, and the first plate 110 and the second plate 111 are stacked in sequence, and the first inter-plate channel 114 is formed between the adjacent lower end surfaces of the first plate 110 and the upper end surfaces of the second plate 111, and the second inter-plate channel 115 is formed between the adjacent lower end surfaces of the second plate 111 and the adjacent upper end surfaces of the first plate 110.

[0108] Specifically, the first plate 110 and the second plate 111 are both provided with a first corner exit hole 117, a first corner entrance hole 118, a second corner entrance hole 119 and a second corner exit hole 120, wherein a second annular boss 112 is provided on the outer periphery of the first corner exit hole 117 and the first corner entrance hole 118 on the second plate 111, and the second annular boss 112 is sealed between the upper end surface of the second plate 111 and the lower end surface of the first plate 110, so that the second corner entrance hole 119 and the second corner exit hole 120 on the first plate 110 are both connected to the first inter-plate channel 114 between the upper end surface of the second plate 111 and the lower end surface of the first plate 110.

[0109] Similarly, a first annular boss 113 is provided on the outer periphery of the second angle entrance hole 119 and the second angle exit hole 120 on the first plate 110, and the first annular boss 113 is sealed between the upper end surface of the first plate 110 and the lower end surface of the second plate 111, so that the first angle exit hole 117 and the first angle entrance hole 118 on the first plate 110 are connected to the second inter-plate channel 115 between the upper end surface of the first plate 110 and the lower end surface of the second plate 111.

[0110] The first corner holes 117 on the first plates 110 and the second plates 111 are connected to form a first corner hole channel, and the first corner holes 118 on the first plates 110 and the second plates 111 are connected to form a first corner hole channel; the first corner holes 118 on the first plates 110 and the second plates 111 are connected to form a first corner hole channel, and the second corner holes 120 on the first plates 110 and the second plates 111 are connected to form a second corner hole channel.

[0111] The upper end plate 200 is provided with two groups of inlet and outlet joints 400, which are respectively provided corresponding to the two groups of inlet and outlet corner hole channels 116, and the two groups of inlet and outlet joints 400 are respectively a first inlet joint, a first outlet joint, a second inlet joint, and a second outlet joint, and the lower end plate 300 is provided with an inlet and outlet sealing boss 310 for sealing the first inlet joint and the first outlet joint. The upper end plate 200 and the lower end plate 300 are provided with distribution sealing bosses 311 corresponding to the distribution channels 121.

[0112] Furthermore, the first plate 110 is provided with a first distribution hole 122, and the adjacent second plate 111 is provided with a second distribution hole 123, and the first distribution hole 122 and the second distribution hole 123 are provided correspondingly;

[0113] A first flange structure 124 is arranged around the first distribution hole 122 on the first plate 110, and a second flange structure 125 is arranged around the second distribution hole 123 on the second plate 111. The first flange structure 124 and the second flange structure 125 are both arranged downward, and the first flange structure 124 and the second flange structure 125 are sealed and connected between the first plate 110 and the second plate 111 so that the first distribution hole 122 and the second distribution hole 123 are connected to form the distribution channel 121.

[0114] Embodiment 2:

[0115] The difference between the second embodiment and the first embodiment is that the first flange structure 124 and the second flange structure 125 are arranged opposite to each other, and the first flange structure 124 and the second flange structure 125 are symmetrically distributed.

[0116] Specifically, the first flanging structure 124 and the second flanging structure 125 both include an inclined section and a horizontal section, and the horizontal sections of the first flanging structure 124 and the second flanging structure 125 are connected.

[0117] In the description of this specification, the description with reference to the terms "example", "embodiment" or "some embodiments" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0118] Of course, the invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A heat exchange plate structure, characterized in that: The heat exchange plate structure has a plurality of first inter-plate channels and a plurality of second inter-plate channels arranged in sequence and at intervals, and two groups of inlet and outlet corner hole channels are also arranged on the heat exchange plate structure, and the two groups of inlet and outlet corner hole channels are respectively used to connect the first inter-plate channels and the second inter-plate channels; The heat exchange plate structure is further provided with at least one distribution channel, and the at least one distribution channel is used to connect at least two of the first inter-plate channels or at least two of the second inter-plate channels.

2. The heat exchange plate structure according to claim 1, characterized in that: The heat exchange plate structure includes a first plate and a second plate, the first plate and the second plate are stacked in sequence, the first inter-plate channel is formed between the adjacent lower end surface of the first plate and the upper end surface of the second plate, and the second inter-plate channel is formed between the adjacent lower end surface of the second plate and the adjacent upper end surface of the first plate.

3. The heat exchange plate structure according to claim 2, characterized in that: At least one of the first plates is provided with a first distribution hole, and at least one of the adjacent second plates is provided with a second distribution hole, and the first distribution hole and the second distribution hole are provided correspondingly; A first flange structure is provided around the first distribution hole on at least one of the first plates, and the first flange structure is sealed and connected between the first plate and the second plate to connect the first distribution hole and the second distribution hole to form the distribution channel.

4. The heat exchange plate structure according to claim 3, characterized in that: A second flange structure is arranged around the second distribution hole on at least one of the second plates, and the first flange structure and the second flange structure are sealed and connected.

5. The heat exchange plate structure according to claim 4, characterized in that: The first flange structure and the second flange structure are arranged in the same direction.

6. The heat exchange plate structure according to claim 4, characterized in that: The first flange structure and the second flange structure are arranged opposite to each other.

7. The heat exchange plate structure according to claim 3, characterized in that: The first distribution hole and the second distribution hole are circular holes, rectangular holes, square holes or keyway holes.

8. The heat exchange plate structure according to any one of claims 1 to 7, characterized in that: The distribution channels are arranged in a plurality of groups, and the sizes of the distribution channels in the plurality of groups are the same or different; and / or the distribution channels in the plurality of groups are arranged at equal intervals or at unequal intervals; And / or, several groups of distribution channels are arranged in multiple rows, and the spacing between the multiple rows of distribution channels is the same or different; and / or, the sizes of several groups of distribution channels are distributed in an increasing, decreasing, increasing first and then decreasing, or decreasing first and then increasing manner.

9. The heat exchange plate structure according to any one of claims 1 to 7, characterized in that: A temperature measuring component is arranged in the distribution channel.

10. A plate heat exchanger, characterized in that: It comprises a heat exchange plate structure as described in any one of claims 1 to 9.

11. The plate heat exchanger according to claim 10, characterized in that: It also includes an upper end plate and a lower end plate, wherein the heat exchange plate structure is arranged between the upper end plate and the lower end plate; At least one of the distribution channels is used to connect all of the first inter-plate channels or all of the second inter-plate channels.

12. The plate heat exchanger according to claim 11, characterized in that: The upper end plate is provided with two groups of inlet and outlet joints, which are respectively arranged corresponding to the two groups of inlet and outlet corner hole channels; the lower end plate is provided with an inlet and outlet sealing boss for closing the inlet and outlet corner hole channels.

13. The plate heat exchanger according to claim 11, characterized in that: The upper end plate and the lower end plate are provided with distribution sealing bosses corresponding to the distribution channels.

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