CN216144008U

CN216144008U - PTC heat exchanger

Info

Publication number: CN216144008U
Application number: CN202122058098.4U
Authority: CN
Inventors: 吴翔; 闻俊涛; 鄂新刚
Original assignee: SHENZHEN SHARING ELECTRONICS CO Ltd
Current assignee: SHENZHEN SHARING ELECTRONICS CO Ltd
Priority date: 2021-08-27
Filing date: 2021-08-27
Publication date: 2022-03-29
Anticipated expiration: 2031-08-27

Abstract

The utility model relates to the technical field of heat transfer, the application relates to a PTC heat exchanger, including casing and heat transfer board, the casing is provided with into liquid mouth and liquid outlet, be equipped with the heat transfer chamber in the casing, the heat transfer board is equipped with a plurality ofly and the interval sets up in the heat transfer chamber, and polylith heat transfer board is parallel to each other, the relative both sides face of heat transfer board and the inner wall butt in heat transfer chamber, the surplus side of heat transfer board and the inner wall interval in heat transfer chamber set up to realize the resistance value of the liquid is 5KPa-40KPa when the velocity of flow of liquid is 100L/min in the heat transfer chamber; the problem of liquid hinder too big in the heat exchanger has been solved to this application, has reduced the oxygen consumption of liquid pump and has practiced thrift the resource.

Description

PTC heat exchanger

Technical Field

The application relates to the technical field of heat exchange, in particular to a PTC heat exchanger.

Background

With the development of science and technology, the application of the PTC heat exchanger in an industrial energy storage and heat management system is more and more extensive, the traditional PTC heat exchanger generally adopts a hexagonal tube straight-through type heat exchanger, two surfaces of a heat exchange sheet generate heat, only one surface is used for heat exchange, the heat on the other surface is dissipated in the air, and the heat exchange efficiency is lower.

Referring to fig. 8, in order to improve heat exchange efficiency, the PTC heat exchanger includes a housing 1, the housing 1 is provided with a liquid inlet 11 and a liquid outlet 12, an inner cavity of the housing 1 is provided with a plurality of heat exchange plates 2 at intervals, the plurality of heat exchange plates 2 are parallel, one of two adjacent heat exchange plates 2 is provided with a barrier plate 4, the barrier plate 4 is connected with an inner cavity wall of the housing 1, so as to change a liquid direction, and a liquid path stroke when liquid flows from an inlet of the housing 1 to an outlet of the housing 1 is increased.

With respect to the related art among the above, the applicant believes that the following drawbacks exist: when the PTC heat exchanger is used, when liquid flows to the outlet of the shell from the inlet of the shell, the liquid path has a long stroke, and the liquid needs to pass through a bend when the liquid direction is changed every time, and the heat exchange plates are provided with a plurality of heat exchange plates, so that the liquid needs to pass through a plurality of bends, the liquid resistance in the PTC is large, the small liquid resistance required by an industrial large liquid pump is difficult to meet, the liquid pump cannot be used, and the power consumption of the liquid pump is increased.

SUMMERY OF THE UTILITY MODEL

The application provides a PTC heat exchanger to solve the too big problem of liquid resistance in the heat exchanger, reduce the oxygen consumption resources are saved of liquid pump.

The application provides a PTC heat exchanger, including casing and heat transfer board, the casing is provided with into liquid mouth and liquid outlet, be equipped with the heat transfer chamber in the casing, the heat transfer board is equipped with a plurality ofly and the interval sets up in the heat transfer chamber, and polylith heat transfer board is parallel to each other, the inner wall butt in heat transfer board relative both sides face and heat transfer chamber, the surplus side of heat transfer board sets up with the inner wall interval in heat transfer chamber.

Optionally, the heat exchange plate is perpendicular to the liquid inlet direction and the liquid outlet direction.

Optionally, the heat exchange plate is parallel to the liquid inlet direction and the liquid outlet direction.

Optionally, the liquid inlet and the liquid outlet are located on the same side wall of the housing.

Optionally, the lengths of the heat exchange plates are gradually shortened, wherein the shortest heat exchange plate is close to the liquid inlet and the liquid outlet.

Optionally, the liquid inlet is higher than the liquid outlet or is flush with the liquid outlet.

Optionally, the heat exchange plate includes a heat exchange wall and a PTC element disposed in an inner cavity of the heat exchange wall.

Optionally, two ends of the PTC element are spaced from the inner cavity wall of the heat exchange wall.

Optionally, the outer wall of the heat exchange wall is provided with a plurality of turbulence ribs, and the plurality of turbulence ribs are perpendicular to the flowing direction of the liquid.

Optionally, the casing includes an upper bottom, a lower bottom and side walls, and an elastic sealing ring is further disposed at a joint of the side walls and the lower bottom.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:

the inner cavity of the shell is provided with a plurality of heat exchange plates which are arranged in the inner cavity of the shell at intervals, the heat exchange plates are parallel to each other, two opposite side surfaces of each heat exchange plate are abutted against the inner cavity wall of the shell, and the rest side surfaces of the heat exchange plates are arranged at intervals with the inner cavity wall of the shell so as to realize that the resistance value of liquid is 5KPa-40KPa when the flow rate of the liquid in the inner cavity of the shell is 100L/min; when the heat exchanger is used, liquid flows into the inner cavity of the shell and then exchanges heat with the heat exchange plate, and the liquid after heat exchange flows out, because only two opposite sides of the heat exchange plate are connected with the inner wall of the shell, the path of the liquid is reduced, and meanwhile, gaps are reserved between the remaining side surfaces of the heat exchange plate and the inner cavity wall of the shell, so that the frequency of changing the direction of the liquid is reduced, the frequency of the liquid passing through a bend is reduced, and the resistance of the liquid is reduced; when the flow of the liquid is 100L/min, the resistance value of the liquid is controlled within 5KPa-40KPa, so that the heat exchange effect of the liquid and the heat exchange plate 2 can be met, the liquid resistance can be reduced, the requirement of a liquid pump is met, and resources are saved.

The length of the heat exchange plate is gradually shortened, wherein the shortest heat exchange plate is close to the liquid inlet and the liquid outlet; when liquid flows in from the liquid inlet, the blocking of the heat exchange plate to the liquid is reduced, so that the liquid flows into the shell and flows out of the shell more smoothly, and the resistance of the liquid is further reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

Fig. 1 is a first schematic structural diagram of the whole of embodiment 1 of the present application;

fig. 2 is a schematic view of the overall structure of embodiment 1 of the present application;

FIG. 3 is a schematic partial exploded view of FIG. 2;

FIG. 4 is a longitudinal cross-sectional view of FIG. 2, wherein the direction of the arrows is the direction of fluid flow;

FIG. 5 is a transverse cross-sectional view of FIG. 2, wherein the direction of the arrows is the direction of fluid flow;

FIG. 6 is a transverse cross-sectional view of the present application in accordance with example 2, wherein the direction of the arrows indicates the direction of fluid flow;

FIG. 7 is a longitudinal sectional view of the present application in accordance with example 2, wherein the direction of the arrows indicates the direction of fluid flow;

fig. 8 is a cross-sectional view of the prior art, wherein the direction of the arrows is the direction of fluid flow.

Reference numerals: 1. a housing; 11. a liquid inlet; 12. a liquid outlet; 13. a heat exchange cavity; 14. a wiring cavity; 15. a bottom is arranged; 16. a lower bottom; 17. a side wall; 2. a heat exchange plate; 21. a heat exchange wall; 211. a turbulence rib; 22. a PTC element; 3. a seal ring; 4. a barrier plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The present application is described in further detail below with reference to figures 1-7.

Example 1

The embodiment of the application discloses a PTC heat exchanger, referring to fig. 1, 2 and 3, the PTC heat exchanger comprises a shell 1, wherein the shell 1 comprises an upper bottom 15, a lower bottom 16 and side walls 17, the upper bottom 15 and the side walls 17 can be connected in a welding or detachable mode, and the rest side walls 17 of the lower bottom 16 can be connected in a welding or detachable mode. When the upper bottom 15 and the side wall 17 are connected through bolts and the lower bottom 16 and the side wall 17 are connected through bolts, in order to improve the sealing effect of the casing 1, an elastic sealing ring 3 is further arranged at the joint of the side wall and the lower bottom 16, and the sealing ring 3 can be made of rubber.

Referring to fig. 4, the shell 1 is provided with a heat exchange cavity 13 and a wiring cavity 14, the heat exchange cavity 13 is further provided with a plurality of heat exchange plates 2, the heat exchange plates 2 are spaced from each other to form a flow channel so that liquid flows to exchange heat, and two opposite side surfaces of each heat exchange plate 2 are abutted to the inner wall of the heat exchange cavity 13; the electrical wires are located in the routing cavity 14 for connecting with the heat exchanger plate 2 and for supplying power to the heat exchanger plate 2. Casing 1 still is equipped with into liquid mouth 11 and liquid outlet 12, during the use, heat transfer board 2 circular telegram generates heat, liquid flows in heat transfer chamber 13 from going into liquid mouth 11, then carry out the heat transfer through runner and heat transfer board 2, liquid after the heat transfer flows out from liquid outlet 12, because heat transfer board 2 only has relative both sides to be connected with heat transfer chamber 13, thereby make liquid only flow through once just to flow out casing 1 from the runner, the route that liquid flows has been reduced, 2 remaining sides of heat transfer board all leave the clearance with the inner wall of heat transfer chamber 13 simultaneously, the number of times of liquid redirecting has been reduced, thereby reduce the number of times of liquid through the bend, make the resistance of liquid obtain reducing. When the flow rate of the liquid is 100L/min, the resistance value of the liquid is controlled within 5KPa-40KPa, so that the heat exchange effect of the liquid and the heat exchange plate 2 can be met, the resistance of the liquid can be reduced, the requirement of a water pump is met, and resources are saved. Due to the convenience of processing, a gap may exist between one of the two side surfaces of the heat exchange plate 2 abutting against the inner wall of the heat exchange cavity 13 and the inner wall of the shell 1, but the use is not affected.

Referring to fig. 4 and 5, the heat exchange plate 2 is perpendicular to the liquid inlet direction and the liquid outlet direction of the liquid, the heat exchange plate 2 is located in a vertical plane, the heat exchange plate 2 is perpendicular to the upper bottom 15 and the lower bottom 16, and the liquid inlet 11 and the liquid outlet 12 are located on the side wall of the housing 1. When the liquid inlet 11 and the liquid outlet 12 are located on two opposite side walls of the shell 1, the liquid inlet 11 and the liquid outlet 12 are both close to the edges of the shell 1 and are far away from each other, at this time, the liquid flows smoothly and flows through the flow channel once, when the flow rate of the liquid is 100L/min, the resistance value of the liquid is controlled within 5KPa-40KPa, and the heat exchange effect of the liquid and the heat exchange plate 2 is increased.

When the liquid inlet 11 and the liquid outlet 12 are located on the same side of the shell 1, the liquid flows in the inner cavity of the shell 1 only once through the flow channel, so that the path of the liquid is reduced, the number of liquid passing through the curve is reduced, and when the flow rate of the liquid is 100L/min, the resistance value of the liquid is controlled within 5KPa-40 KPa. In order to further reduce the resistance of the liquid, the lengths of the plurality of heat exchange plates 2 are gradually shortened, wherein the shortest heat exchange plate 2 is close to the liquid inlet 11 and the liquid outlet 12. When liquid flows in from the liquid inlet 11, the blocking of the heat exchange plate 2 to the liquid is reduced, so that the liquid flows into the shell 1 and flows out of the shell 1 more smoothly, and the resistance of the liquid is further reduced. In this case, the present application tested this configuration, and the liquid was a mixture of 50% ethylene glycol and 50% water, the flow rate of the liquid was 100L/min, and the measured resistance was 7.56 KPa.

Referring to fig. 1 and 2, the liquid inlet 11 is not lower than the liquid outlet 12, the liquid inlet 11 is flush with the liquid outlet 12 so as not to increase the resistance of the liquid, and the liquid inlet 11 is higher than the liquid outlet 12 so as to decrease the resistance of the liquid.

Referring to fig. 4 and 5, the heat exchange plate 2 includes a heat exchange wall 21 and a PTC element 22 disposed in an inner cavity of the heat exchange wall 21, and two ends of the PTC element 22 are spaced from the inner cavity wall of the heat exchange wall 21 for effective insulation.

In order to improve the heat exchange effect of this application, heat transfer wall 21 outer wall integrated into one piece has many vortex muscle 211, many vortex muscle 211 perpendicular to liquid flow direction to improve the heat exchange effect of liquid and heat transfer board 2.

Example 2

Referring to fig. 6, the difference from embodiment 1 is that the heat exchange plate 2 is parallel to the liquid flowing direction and the liquid discharging direction of the liquid, when the heat exchange plate 2 is located in the vertical plane, the liquid inlet 11 and the liquid outlet 12 are located on the side wall of the housing 1, and the liquid inlet 11 and the liquid outlet 12 can be located on two opposite sides of the housing 1 and are far away from each other; the liquid inlet 11 and the liquid outlet 12 may be located on the same side of the housing 1.

Referring to fig. 7, when the heat exchange plate 2 is located in a horizontal plane, the liquid inlet 11 and the liquid outlet 12 are located at two opposite sides of the housing 1, and the liquid inlet 11 and the liquid outlet 12 are far away from each other.

Through the arrangement mode, liquid flows from the liquid inlet 11 to the liquid outlet 12 and still flows smoothly through the primary flow channel, and when the flow rate of the liquid is 100L/min, the resistance value of the liquid is still controlled within 5KPa-40KPa, so that the requirement of a factory water pump is met, the oxygen consumption of the liquid pump is reduced, and resources are saved.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a PTC heat exchanger, includes casing (1) and heat transfer board (2), casing (1) is provided with into liquid mouth (11) and liquid outlet (12), its characterized in that, be equipped with heat transfer chamber (13) in casing (1), heat transfer board (2) are equipped with a plurality ofly and the interval sets up in heat transfer chamber (13), and polylith heat transfer board (2) are parallel to each other, the inner wall butt of heat transfer board (2) relative both sides face and heat transfer chamber (13), the surplus side of heat transfer board (2) sets up with the inner wall interval of heat transfer chamber (13).

2. A PTC heat exchanger according to claim 1, characterised in that the heat exchanger plates (2) are perpendicular to the inlet and outlet direction.

3. A PTC heat exchanger according to claim 1, characterised in that the heat exchanger plates (2) are parallel to the inlet and outlet direction.

4. A PTC heat exchanger according to claim 2, characterised in that the inlet (11) and the outlet (12) are located in the same side wall of the housing (1).

5. A PTC heat exchanger according to claim 4, characterized in that the length of the heat exchanger plates (2) is gradually reduced, wherein the shortest heat exchanger plate (2) is located close to the liquid inlet (11) and the liquid outlet (12).

6. A PTC heat exchanger according to claim 1, wherein the liquid inlet (11) is higher than the liquid outlet (12) or is flush with the liquid outlet (12).

7. A PTC heat exchanger according to claim 1, characterised in that the heat exchanger plate (2) comprises a heat exchanger wall (21) and PTC elements (22) arranged in the interior of the heat exchanger wall (21).

8. A PTC heat exchanger according to claim 7, characterized in that the ends of the PTC element (22) are spaced from the inner wall of the heat exchange wall (21).

9. A PTC heat exchanger according to claim 7, characterized in that the outer wall of the heat exchange wall (21) is provided with a plurality of flow disturbing ribs (211), and the plurality of flow disturbing ribs (211) are perpendicular to the flowing direction of the liquid.

10. A PTC heat exchanger according to claim 1, wherein the housing (1) comprises an upper base (15), a lower base (16) and side walls (17), and an elastic sealing ring (3) is further provided at the connection of the side walls (17) and the lower base (16).