CN111405690A

CN111405690A - PTC heater convenient to disassemble

Info

Publication number: CN111405690A
Application number: CN202010242942.6A
Authority: CN
Inventors: 徐成东
Original assignee: Ningbo Yaxier Electric Appliance Co ltd
Current assignee: Ningbo Yaxier Electric Appliance Co ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-07-10
Anticipated expiration: 2040-03-31
Also published as: CN111405690B

Abstract

The invention discloses a PTC heater convenient to disassemble, which comprises an installation frame and a heating assembly, wherein the installation frame comprises a base, a plurality of partition plate groups are arranged on the base, each partition plate group consists of two partition plates, and the heating assembly is connected between the two partition plates; the lower extreme of heating element is provided with insulating heat-conducting layer, and the below of insulating heat-conducting layer is provided with arc inserted sheet group, and arc inserted sheet group includes that two symmetries set up and have elastic arc inserted sheet, is provided with the jack that links to each other with arc inserted sheet group on the base, the lateral wall of jack and the surface phase-match of arc inserted sheet. In the invention, the heating component is very convenient to mount and dismount, and is convenient to maintain and replace.

Description

PTC heater convenient to disassemble

Technical Field

The invention relates to a heater, in particular to a PTC heater convenient to disassemble.

Background

The PTC heater is an important heat-generating component in air conditioners and heating devices. The existing PTC heater generally comprises a mounting frame and a plurality of heating assemblies, wherein the heating assemblies are fixedly mounted on the mounting frame through bolts, and the heating assemblies are not convenient to detach in the connecting mode, so that the heating assemblies are troublesome to repair and replace.

Such as: the invention discloses a PTC electric heater for an air conditioning system of an electric automobile, which is a Chinese patent publication No. CN 102647814 A.A periphery of an electrode plate is a silicon rubber buckling type frame, an inner space of the frame is equally divided and isolated by a silicon rubber strip, a PTC heating chip is positioned in each isolated area, and the frames of two electrode plates are buckled; the PTC heating plates and the radiating fins are alternately arranged in the frame, and the PTC heating plates are electrically insulated from the radiating fins through the heat-conducting silica gel protective film; a cushion plate is arranged on the inner side of the frame body, and a spring piece with a damping function is arranged between the frame body and the cushion plate; the controller is positioned in the shell, and the shell is provided with a vent hole; one end of the end row is electrically connected with an electrode plate on the PTC heating plate, the other end of the end row is connected with the controller through an electrode circuit board, and the end row is arranged on the frame body; one end of the plug connector penetrates through the shell to be connected with a controller, and the controller is used for controlling the power of the electric heater. In the invention, the PTC heating plate is inconvenient to detach, so that the maintenance and replacement of the PTC heating plate are troublesome.

Disclosure of Invention

The invention aims to solve the problem that the heating assembly is inconvenient to disassemble and troublesome to maintain and replace in the conventional PTC heater, and provides a conveniently-disassembled PTC heater which can effectively solve the problem.

The purpose of the invention is realized by the following technical scheme: a PTC heater convenient to disassemble comprises a mounting frame and a heating assembly, wherein the mounting frame comprises a base, a plurality of partition plate groups are arranged on the base, each partition plate group consists of two partition plates, and the heating assembly is connected between the two partition plates; the lower extreme of heating element is provided with insulating heat-conducting layer, and the below of insulating heat-conducting layer is provided with arc inserted sheet group, and arc inserted sheet group includes that two symmetries set up and have elastic arc inserted sheet, is provided with the jack that links to each other with arc inserted sheet group on the base, the lateral wall of jack and the surface phase-match of arc inserted sheet.

According to the invention, the heating component is inserted into the jack through the arc-shaped inserting sheet group, and the arc-shaped inserting sheet has elasticity, so that the arc-shaped inserting sheet is attached to the side wall of the jack after being inserted into the jack, the heating component is fixed between the partition plates, and the heating component can be directly pulled out only when being detached. In the invention, the heating component is very convenient to mount and dismount, and is convenient to maintain and replace. The insulating heat-conducting layer of setting at the heating element lower extreme can play good insulating effect, avoids the mounting bracket electrified.

Preferably, the heat generating assembly includes an outer frame, a heat generating component is disposed in the outer frame, and heat dissipating plates are disposed on two sides of the heat generating component. The heating part generates heat after being electrified, and the heat is uniformly dissipated through the heat dissipation plate.

Preferably, the heat generating member includes two conductive plates parallel to each other, and a plurality of PTC heaters are disposed between the conductive plates. The current-conducting plates are respectively connected with the positive electrode and the negative electrode of the power supply, when the power supply is switched on, current is formed between the two current-conducting plates, and the current flows through the PTC heating body, so that the PTC heating body generates heat to generate heat.

Preferably, the heat dissipation plate is made of aluminum. Aluminum has good thermal conductivity, and improves the heat dissipation performance of the heat dissipation plate.

Preferably, the heat dissipation plate is folded in a zigzag shape.

Preferably, the insulating heat conduction layer is made of alumina ceramics. The alumina ceramic has good heat-conducting property and good insulativity.

Preferably, a heat conducting block is arranged on the inner side of one of the arc-shaped inserting pieces in the arc-shaped inserting piece group, a heat conducting cylinder body is arranged on the heat conducting block, one end of the heat conducting cylinder body is opened, the opening of the heat conducting cylinder body faces to the other arc-shaped inserting piece, a piston body capable of moving along the axial direction of the heat conducting cylinder body is arranged in the heat conducting cylinder body, a closed piston cavity is formed between the piston body and the heat conducting cylinder body, low-boiling-point liquid is placed in the piston cavity, and a boss corresponding to the piston; be provided with the recess on the heat conduction cylinder body inner wall, be provided with double-deck sheetmetal in the recess, double-deck sheetmetal is crooked towards piston body one side when the temperature risees, and the one end of double-deck sheetmetal is provided with the location lug, and one side that the piston body is close to double-deck sheetmetal is provided with and fixes a position lug assorted constant head tank. When the heating assembly is in a working state, the temperature of the heating assembly rises, a part of heat generated by the heating assembly is conducted to the heat conduction cylinder body and the temperature of the heat conduction cylinder body rises, after the temperature of the heat conduction cylinder body rises, low-boiling-point liquid in the piston cavity evaporates and expands, the piston body is pushed to move towards the other arc-shaped inserting piece until the front end of the piston body abuts against the boss, meanwhile, due to the temperature rise, the double-layer metal piece bends towards one side of the piston body, the positioning lug on the double-layer metal piece is embedded into the positioning groove in the side face of the piston body, the piston body is fixed and fixed, the two arc-shaped inserting pieces cannot bend inwards and move, the arc-shaped inserting piece group can be firmly clamped in the jack, the heating assembly cannot be easily pulled out. When heating element was in the off-service state, the initial condition was resumeed to the double-deck sheetmetal, and the location lug breaks away from the constant head tank, resumes liquid state after the low boiling point liquid temperature in the piston chamber drops for the arc inserted sheet can the incurve, makes heating element can be extracted under the off-working condition, is convenient for maintain and change it.

Preferably, the low boiling point liquid is diethyl ether.

Preferably, the double-layer metal sheet is composed of two metal layers made of different materials, and the thermal expansion coefficient of the metal layer on one side close to the piston body is smaller than that of the metal layer on the other side. Because the thermal expansion coefficient of the metal layer close to one side of the piston body is smaller than that of the metal layer at the other side, when the temperature rises, the extension length of the metal layer close to one side of the piston body is smaller than that of the metal layer at the other side, and therefore the double-layer metal sheet is bent towards one side of the piston body.

The invention has the beneficial effects that: in the invention, the heating component is very convenient to mount and dismount, and is convenient to maintain and replace.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the mounting bracket.

Fig. 3 is a cross-sectional view of a heater assembly.

Fig. 4 is an enlarged view of a portion a in fig. 1.

FIG. 5 is an enlarged view of the portion B in FIG. 4

In the figure: 1. base, 2, baffle, 3, heating element, 4, jack, 5, frame, 6, current conducting plate, 7, PTC heat-generating body, 8, heating panel, 9, arc inserted sheet, 10, heat-conducting block, 11, heat-conducting cylinder body, 12, piston body, 13, piston chamber, 14, boss, 15, recess, 16, double-deck sheetmetal, 17, location lug, 18, constant head tank, 19, insulating heat-conducting layer.

Detailed Description

The invention is further described by the following detailed description in conjunction with the accompanying drawings.

Example 1:

as shown in fig. 1 to 5, a PTC heater which is easy to be disassembled includes a mounting bracket and a heat generating component 3. The mounting bracket comprises a base 1, wherein a plurality of partition plate groups are arranged on the base 1 and are sequentially arranged along the length direction of the base 1. Every baffle group comprises two relative baffles 2 that set up, and baffle 2 is perpendicular with base 1, and heating element 3 installs between two baffles 2. The heat generating component 3 includes a frame 5, a heat generating component is disposed in the frame 5, and heat dissipating plates 8 are disposed on both sides of the heat generating component. The heat dissipation plate 8 is made of aluminum. The heat dissipation plate is in a Z-shaped folding shape. The heat generating component comprises two parallel conductive plates 6, and a plurality of PTC heaters 7 are arranged between the conductive plates 6. The conductive plate 6 is made of metal. The two current-conducting plates 6 are respectively connected with the positive electrode and the negative electrode of the power supply, after the power supply is switched on, current is formed between the two current-conducting plates 6 and flows through the PTC heating element, so that the PTC heating element generates heat to generate heat, and the heat is uniformly radiated through the heat-radiating plate. An insulating layer is provided between the conductive plate 6 and the heat sink 8.

The lower end of the outer frame 5 is provided with an insulating and heat conducting layer 19. The insulating and heat conducting layer 19 is made of alumina ceramic. The lower extreme of insulating heat-conducting layer 19 is provided with arc inserted sheet group, and every arc inserted sheet group includes two symmetry settings and has elastic arc inserted sheet 9. The arc-shaped inserting pieces 9 are made of metal materials and have good heat conductivity. Be provided with the jack 4 that links to each other with arc inserted sheet group on the base 1, the lateral wall of jack 4 and the surface phase-match of arc inserted sheet 9.

The inner side of one of the arc-shaped inserting pieces 9 in the arc-shaped inserting piece group is provided with a heat conducting block 10, the heat conducting block 10 is provided with a heat conducting cylinder body 11, and the heat conducting cylinder body 11 is of a cylindrical structure. One end of the heat conduction cylinder body 11 is opened, and the opening of the heat conduction cylinder body 11 faces to the other arc-shaped inserting piece 9. A piston body 12 capable of moving along the axial direction of the heat conduction cylinder body 10 is arranged in the heat conduction cylinder body 10, a closed piston cavity 13 is formed between the piston body 12 and the heat conduction cylinder body, and low-boiling-point liquid is placed in the piston cavity 13. The low boiling point liquid is ether, and a boss 14 corresponding to the piston body 12 is arranged on the other arc-shaped inserting piece 9. The inner wall of the heat conduction cylinder body 10 is provided with a groove 15, a double-layer metal sheet 16 is arranged in the groove 15, the double-layer metal sheet 16 is composed of two metal layers made of different materials, the thermal expansion coefficient of the metal layer close to one side of the piston body is smaller than that of the metal layer on the other side, the double-layer metal sheet 16 bends towards one side of the piston body when the temperature rises, one end of the double-layer metal sheet 16 is provided with a positioning lug 17, and one side of the piston body 12 close to the double-layer metal sheet 16 is provided with a positioning. When the heating assembly is in a working state, the temperature of the heating assembly rises, a part of heat generated by the heating assembly is conducted to the heat conduction cylinder body and the temperature of the heat conduction cylinder body rises, after the temperature of the heat conduction cylinder body rises, low-boiling-point liquid in the piston cavity evaporates and expands, the piston body is pushed to move towards the other arc-shaped inserting piece until the front end of the piston body abuts against the boss, meanwhile, due to the temperature rise, the double-layer metal piece bends towards one side of the piston body, the positioning lug on the double-layer metal piece is embedded into the positioning groove in the side face of the piston body, the piston body is fixed and fixed, the two arc-shaped inserting pieces cannot bend inwards and move, the arc-shaped inserting piece group can be firmly clamped in the jack, the heating assembly cannot be easily pulled out. When heating element was in the off-service state, the initial condition was resumeed to the double-deck sheetmetal, and the location lug breaks away from the constant head tank, resumes liquid state after the low boiling point liquid temperature in the piston chamber drops for the arc inserted sheet can the incurve, makes heating element can be extracted under the off-working condition, is convenient for maintain and change it.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a convenient PTC heater who dismantles, includes mounting bracket, heating element, its characterized in that: the mounting frame comprises a base, a plurality of partition plate groups are arranged on the base, each partition plate group consists of two partition plates, and the heating assembly is connected between the two partition plates; the lower extreme of heating element is provided with insulating heat-conducting layer, and the below of insulating heat-conducting layer is provided with arc inserted sheet group, and arc inserted sheet group includes that two symmetries set up and have elastic arc inserted sheet, is provided with the jack that links to each other with arc inserted sheet group on the base, the lateral wall of jack and the surface phase-match of arc inserted sheet.

2. A PTC heater according to claim 1, wherein the heat generating assembly comprises an outer frame, a heat generating component is disposed in the outer frame, and heat dissipating plates are disposed on both sides of the heat generating component.

3. A PTC heater facilitating detachment according to claim 2, wherein the heat generating member comprises two conductive plates parallel to each other, and a plurality of PTC heat generating bodies are disposed between the conductive plates.

4. A PTC heater for facilitating disassembly according to claim 2, wherein the heat radiating plate is made of aluminum.

5. A PTC heater which is easy to detach according to claim 2, wherein the heat radiating plate is folded in a zigzag shape.

6. A PTC heater for facilitating disassembly according to claim 1 wherein the insulating and heat conducting layer is made of alumina ceramic.

7. A PTC heater convenient to disassemble according to claim 1, wherein a heat conducting block is arranged on the inner side of one of the arc-shaped inserting pieces in the arc-shaped inserting piece group, a heat conducting cylinder body is arranged on the heat conducting block, one end of the heat conducting cylinder body is opened, the opening of the heat conducting cylinder body faces to the other arc-shaped inserting piece, a piston body capable of moving along the axial direction of the heat conducting cylinder body is arranged in the heat conducting cylinder body, a closed piston cavity is formed between the piston body and the heat conducting cylinder body, low boiling point liquid is placed in the piston cavity, and a boss corresponding to the piston body is arranged on the other arc; be provided with the recess on the heat conduction cylinder body inner wall, be provided with double-deck sheetmetal in the recess, double-deck sheetmetal is crooked towards piston body one side when the temperature risees, and the one end of double-deck sheetmetal is provided with the location lug, and one side that the piston body is close to double-deck sheetmetal is provided with and fixes a position lug assorted constant head tank.

8. A conveniently demountable PTC heater according to claim 7, wherein said low boiling point liquid is diethyl ether.

9. A PTC heater according to claim 7, wherein the double-layered metal sheet is composed of two metal layers of different materials, and the coefficient of thermal expansion of the metal layer adjacent to one side of the piston body is smaller than that of the metal layer on the other side.