CN221409147U

CN221409147U - Heater

Info

Publication number: CN221409147U
Application number: CN202323315517.3U
Authority: CN
Inventors: 王立; 张子恒; 张作然
Original assignee: Wuhan Aviation Sensing Technology Co ltd
Current assignee: Wuhan Aviation Sensing Technology Co ltd
Priority date: 2023-12-06
Filing date: 2023-12-06
Publication date: 2024-07-23
Anticipated expiration: 2033-12-06

Abstract

The utility model relates to the field of heating equipment, in particular to a heater. According to the utility model, the heating plate component and the insulation component are arranged in the heat conduction metal shell, wherein the heating plate component is electrically connected with an external power supply. The insulating assembly comprises a first insulating layer and a second insulating layer which are positioned on the upper side and the lower side of the heating plate assembly. The heat conduction metal shell comprises a shell body with one side open and a cover plate, a wire passing hole for leading out a heating plate assembly wire is formed in the heat conduction metal shell, the shell body is in sealing fit with the cover plate, and the wire passing hole is sealed through a sealing material. According to the utility model, the heat conduction metal shell is adopted to protect the internal components, so that the technical problem that the product air tightness is poor due to aging easily caused by using silicon rubber as an external protection material in the prior art is solved.

Description

Heater

Technical Field

The utility model relates to the field of heating equipment, in particular to a heater.

Background

The electric heater in the plane area commonly used in the market mostly adopts silicon rubber as an external protection material, generally, a heating component is coated in the electric heater by using a silicon rubber material, and the electric heater is produced by adopting a solid silicon rubber hot-press molding process, so that the process is relatively low in cost and is commonly applied. However, as the silicone rubber material is used for a long time, aging is unavoidable, holes and cracks are easy to generate at the positions of stress concentration at the joint, the turning position and the like, and the technical problem of poor air tightness is brought.

Disclosure of utility model

The utility model provides a heater, which solves the technical problem that the air tightness of a product is poor due to aging easily when silicon rubber is used as an external protective material in the prior art.

In order to solve the above technical problems, the technical solution adopted in this embodiment is as follows:

in some embodiments, the present utility model provides a heater comprising:

the heating plate component is electrically connected with an external power supply through a first lead;

The insulation assembly comprises a first insulation layer and a second insulation layer which are respectively positioned on the upper side and the lower side of the heating plate assembly;

the heat conduction metal shell comprises a shell with an opening at one side and a cover plate matched with the opening, wherein the heating plate assembly and the insulating assembly are arranged in the shell, the cover plate is in sealing fit with the shell, a wire passing hole is formed in the heat conduction metal shell and used for leading out the first conducting wire, and the wire passing hole is sealed by adopting a sealing material.

In some embodiments, the heating sheet assembly comprises a three-layer structure including a PTC ceramic heating sheet as an intermediate layer, and first and second conductive sheets disposed on upper and lower sides of the PTC ceramic heating sheet, the first and second conductive sheets being electrically connected to the PTC ceramic heating sheet; the first conductive sheet and the second conductive sheet are used for being electrically connected with an external power supply.

In some embodiments, a heat conducting sheet is further arranged in the heat conducting metal shell, and a temperature sensor is configured on the heat conducting sheet and is in communication connection with the upper computer.

In some embodiments, the heat conducting fin has an upper layer and a lower layer, and the heat conducting fin positioned at the lower layer is provided with a mounting groove which is matched with the temperature sensor and is communicated with the wire through hole; the temperature sensor is connected with the upper computer through a second lead, the temperature sensor is embedded into the mounting groove, and the second lead passes through the mounting groove and is led out from the wire passing hole.

In some embodiments, the heater further comprises a high thermal conductivity layer positioned on one side or both sides of the thermally conductive metal housing and fixedly connected to the thermally conductive metal housing.

In some embodiments, the heater further comprises a heat insulating layer positioned on one side of the heat conducting metal shell and fixedly connected with the heat conducting metal shell.

In some embodiments, a cylindrical through hole is configured in the shell, and the heating plate component and the insulating component are provided with grooves matched with the cylindrical through hole and used for giving way to the cylindrical through hole; the cover plate is provided with a first through hole corresponding to the cylindrical through hole; the edge of the first through hole is in sealing connection with the end face of the cylindrical through hole.

In some embodiments, a threaded hole is formed in the end face of the side wall of the shell, which is located at one side of the opening, a second through hole corresponding to the threaded hole is formed in the cover plate, and the threaded hole is connected with the second through hole through a screw.

In some embodiments, the thermally conductive metal housing is filled with a sealant.

In some embodiments, the thermally conductive metal housing is an aluminum alloy material.

Advantageous effects

According to the utility model, the heat conduction metal shell is adopted to protect the internal components, the aging problem of the metal shell can not occur, the shell is in sealing fit with the cover plate, and the wire through hole is sealed by adopting the sealing material, so that the air tightness is strong, and the technical problem that the product air tightness is poor due to aging easily caused by using silicon rubber as an external protection material in the prior art is solved.

Additional aspects and advantages of embodiments of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the utility model.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

The methods, systems, and/or programs in the accompanying drawings will be described further in terms of exemplary embodiments. These exemplary embodiments will be described in detail with reference to the drawings. These exemplary embodiments are non-limiting exemplary embodiments, wherein the exemplary numbers represent like mechanisms throughout the various views of the drawings.

Fig. 1 is a schematic structural view of a heater according to an embodiment of the present utility model.

Fig. 2 is a schematic diagram illustrating a heater according to an embodiment of the utility model.

Reference numerals illustrate:

100-a heat patch assembly; 110-PTC ceramic heating plate; 120-a first conductive sheet; 130-a second conductive sheet;

210-a first insulating layer; 220-a second insulating layer;

310-a housing; 311-columnar through holes; 312-threaded holes; 320-cover plate; 321-a first through hole; 322-a second through hole; 323-screws; 324-wire vias;

400-heat conductive sheet; 410-a temperature sensor; 420-mounting groove;

500-a high thermal conductivity layer;

600-insulating layer.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the term "connected" should be construed broadly, and may be a fixed connection, a removable connection, or an integral connection, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In some embodiments, the present utility model provides a heater. Including a heater chip assembly 100, an insulating assembly, and a thermally conductive metal housing. Wherein, the heating sheet assembly 100 is electrically connected to an external power source through a first wire. The insulation assembly includes a first insulation layer 210 and a second insulation layer 220 respectively located at upper and lower sides of the heating plate assembly 100. The heat conductive metal housing includes a housing 310 having an opening at one side and a cover plate 320 corresponding to the opening, the heat sink assembly 100 and the insulation assembly are disposed in the housing 310, and the cover plate 320 is in sealing engagement with the housing 310. The heat conductive metal shell is provided with a wire through hole 324 for leading out the first wire, and the wire through hole 324 is sealed by adopting a sealing material. The utility model adopts heat conduction metal as an external protective material, and an insulating layer component is correspondingly added between the heating plate component and the metal heat conduction shell. The ageing problem can not appear in the metal casing, and sealing fit between casing and apron, the wire hole adopts sealing material to seal, and the gas tightness is strong to this use silicone rubber as outside protective material in having solved prior art easily leads to the not good technical problem of product gas tightness because of ageing.

In some embodiments, the heating sheet assembly 100 has a three-layer structure, including a PTC ceramic heating sheet 110 as a middle layer, and a first conductive sheet 120 and a second conductive sheet 130 disposed on the upper and lower sides of the PTC ceramic heating sheet 110 and electrically connected to the PTC ceramic heating sheet 110, respectively, wherein the first conductive sheet 120 and the second conductive sheet 130 are electrically connected to an external power source through wires. When in use, an external power supply is turned on, and the current sequentially passes through the first conductive sheet 120, the PTC ceramic heating sheet 110 and the second conductive sheet 130, or sequentially passes through the second conductive sheet 130, the PTC ceramic heating sheet 110 and the first conductive sheet 120, and the temperature of the PTC ceramic heating sheet 110 is continuously increased. Since the PTC ceramic heater chip 110 is a resistance mutant heating material, it has a characteristic of having a very large temperature coefficient after reaching its switching temperature, and the resistance increases to more than mega ohms in a short time, so that when the PTC ceramic heater chip 110 reaches its switching temperature, its resistance increases greatly, resulting in a decrease in current, a decrease in heating power, and a decrease in temperature with it. As the temperature decreases, the resistance value of the PTC ceramic heater chip 110 decreases greatly, resulting in an increase in current, and the heating power increases again, with a consequent increase in temperature. In this way, the heater can automatically maintain the temperature near the switching temperature of the PTC ceramic heating plate 110, thereby achieving a constant temperature effect.

In particular, the heat tab assembly 100 may include a plurality of PTC ceramic heat tabs 110 to improve heating efficiency. The plurality of PTC ceramic heating plates 110 are uniformly arranged in the middle layer, and after the heat conductive metal housing is assembled, the PTC ceramic heating plates 110 are clamped by the first and second conductive plates 120 and 130.

In some embodiments, the heat conducting metal shell is further provided with a heat conducting sheet 400, and the heat conducting sheet 400 is provided with a temperature sensor 410, and the temperature sensor 410 is in communication connection with the upper computer and is used for feeding back the temperature data of the heater to the upper computer, so that the heat conducting sheet 400 can realize heat transfer more rapidly, and the data acquired by the temperature sensor 410 is more accurate.

Specifically, the heat conducting fin 400 has an upper layer structure and a lower layer structure, the heat conducting fin 400 positioned at the lower layer is provided with a mounting groove 420 for accommodating the temperature sensor 410, the mounting groove 420 is communicated with the wire passing hole 324, the temperature sensor 410 is connected with the upper computer through a second wire, the temperature sensor 410 is embedded into the mounting groove 420, and the second wire passes through the mounting groove 420 and is led out from the wire passing hole 324.

Preferably, the heat conductive sheet 400 may be disposed at one end of the heat sheet assembly 100, between the first insulating layer 210 and the second insulating layer 220, closest to the heat sheet assembly 100, so that the data collected by the temperature sensor 410 can accurately reflect the temperature of the heat sheet assembly 100.

Preferably, the heat conductive sheet 400 may be made of heat resistant silicone rubber. Considering that the heat transfer performance of the heat conductive sheet 400 directly affects the accuracy of the data collected by the temperature sensor 410, the heat-resistant silicone rubber material is adopted, so that the good heat transfer performance can be maintained in a high temperature state, and the data accuracy of the temperature sensor 410 can be improved.

In some embodiments, the heater further includes a high heat conduction layer 500, which is located on the upper side and/or the lower side of the heat conduction metal casing, and is fixedly connected with the heat conduction metal casing, so as to improve the bonding degree between the heater and the surface to be heated, and further improve the heat conduction effect.

Preferably, the high thermal conductive layer 500 may be made of high thermal conductive silicone rubber.

In some embodiments, the heater further comprises a thermal insulation layer 600 positioned on one side of the thermally conductive metal housing and fixedly connected to the thermally conductive metal housing. In some application scenarios, only the heater is needed to heat the to-be-heated body on one side, while the temperature on the other side of the heater should be kept at a low level. For example, if the heater is fixed on the side wall of the to-be-heated body to heat the to-be-heated body, and the heater is easily touched by a field person, if the non-heating side of the heater is not treated, there is a safety accident such as a burn caused by accidental contact with the heater. Therefore, the heat insulating layer 600 is disposed on one side of the heat conductive metal case, and the other side is used as the heating side, thereby increasing the application range of the heater.

Preferably, the heat insulating layer 600 may be made of a heat insulating silicone rubber material.

In some embodiments, a cylindrical through hole 311 is provided in the housing 310, and the heater chip assembly 100 and the insulating assembly have grooves that fit into the cylindrical through hole 311 for giving way to the cylindrical through hole 311. The cover plate 320 is provided with a first through hole 321 corresponding to the cylindrical through hole 311, and the edge of the first through hole 321 is in sealing connection with the end face of the cylindrical through hole 311. The first through hole 321 is used for fixing the heater on the heating body to be heated, and specifically, the first through hole 321 may include a plurality of through holes, and may also include a plurality of sizes. The first through hole 321 having a smaller size may be used to fix the heater to the heating body using a fastener such as a screw according to various application scenarios. When the to-be-heated product is a pipeline, the first through hole 321 with a larger size can be matched with the outer diameter of the pipeline, and the heater is sleeved on the pipeline. When the to-be-heated product is a tank with a side wall or an end provided with a pipeline, the heater can be sleeved on the pipeline through the first through hole 321 with a larger size, and then the heater can be fixed on the to-be-heated body through the first through hole 321 with a smaller size by using fasteners such as screws.

When the heater further includes the high thermal conductive layer 500 and/or the heat insulating layer 600, the same through holes as the first through holes 321 are also formed in the high thermal conductive layer 500 and/or the heat insulating layer 600 at positions corresponding to the first through holes 321.

In some embodiments, the side wall end surface of the housing 310 on the opening side is provided with a threaded hole 312, the cover plate 320 is provided with a second through hole 322 corresponding to the threaded hole 312, and the threaded hole 312 is connected with the second through hole 322 through a screw 323.

In some embodiments, the thermally conductive metal housing is an aluminum alloy material. The aluminum alloy material has high structural strength, strong corrosion resistance, high thermal conductivity and lower cost, and can be applied to more applicable scenes.

When the heater is assembled, the heating plate assembly 100 and the insulating assembly can be sequentially placed in the shell 310, the cover plate 320 is covered at the opening of the shell 310, then the cover plate is fastened by the screw 323, and finally the seam between the cover plate 320 and the shell 310 is sealed by adopting a welding means, so that the sealing performance of the heat-conducting metal shell is improved. After the heating plate assembly 100 and the insulation assembly are sequentially placed in the shell 310, the gap in the shell 310 is filled with sealant, and then the cover plate 320 is covered at the opening of the shell 310 and fastened by using the screw 323, so that the sealing effect is achieved.

Although embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by those skilled in the art within the scope of the utility model, which is defined by the claims and their equivalents.

Claims

1. A heater, comprising:

The heating plate assembly (100) is electrically connected with an external power supply through a first lead;

The insulation assembly comprises a first insulation layer (210) and a second insulation layer (220) which are respectively positioned on the upper side and the lower side of the heating plate assembly (100);

The heat conduction metal shell comprises a shell body (310) with an opening at one side and a cover plate (320) which is matched with the opening, wherein the heating plate assembly (100) is arranged in the shell body (310) with the insulating assembly, the cover plate (320) is in sealing fit with the shell body (310), a wire passing hole (324) is formed in the heat conduction metal shell body and used for leading out a first wire, and the wire passing hole (324) is sealed by adopting a sealing material.

2. A heater according to claim 1, wherein the heating sheet assembly (100) comprises a three-layer structure including a PTC ceramic heating sheet (110) as an intermediate layer, and first and second conductive sheets (120, 130) disposed on upper and lower sides of the PTC ceramic heating sheet (110), the first and second conductive sheets (120, 130) being electrically connected to the PTC ceramic heating sheet (110); the first conductive sheet (120) and the second conductive sheet (130) are used for being electrically connected with an external power supply.

3. The heater of claim 1, wherein a heat conducting sheet (400) is further disposed in the heat conducting metal casing, and a temperature sensor (410) is disposed on the heat conducting sheet (400), and the temperature sensor (410) is in communication connection with an upper computer.

4. A heater as claimed in claim 3, wherein the heat conductive sheet (400) has a structure of upper and lower layers, and the heat conductive sheet (400) positioned at the lower layer has a mounting groove (420) adapted to the temperature sensor (410), and the mounting groove (420) communicates with the wire passing hole (324); the temperature sensor (410) is connected with the upper computer through a second lead, the temperature sensor (410) is embedded into the mounting groove (420), and the second lead passes through the mounting groove (420) and is led out from the wire through hole (324).

5. The heater of claim 1, further comprising a high thermal conductivity layer (500) located on one or both sides of the thermally conductive metal housing and fixedly coupled to the thermally conductive metal housing.

6. The heater of claim 1, further comprising a thermal insulation layer (600) located on one side of the thermally conductive metal housing and fixedly coupled to the thermally conductive metal housing.

7. The heater according to claim 1, wherein a cylindrical through hole (311) is provided in the housing (310), and the heater chip assembly (100) and the insulating assembly have grooves adapted to the cylindrical through hole (311) for yielding the cylindrical through hole (311); the cover plate (320) is provided with a first through hole (321) corresponding to the cylindrical through hole (311); the edge of the first through hole (321) is in sealing connection with the end face of the cylindrical through hole (311).

8. The heater as claimed in claim 1, wherein a threaded hole (312) is formed in a side wall end surface of the housing (310) on the opening side, a second through hole (322) corresponding to the threaded hole (312) is formed in the cover plate (320), and the threaded hole (312) is connected with the second through hole (322) through a screw (323).

9. The heater of claim 1, wherein the thermally conductive metal housing is filled with a sealant.

10. The heater of claim 1, wherein said thermally conductive metal housing is an aluminum alloy material.