WO2022205896A1

WO2022205896A1 - Fan heater internal heating assembly, fan heater and fan heater heating control method

Info

Publication number: WO2022205896A1
Application number: PCT/CN2021/128129
Authority: WO
Inventors: 汪鹏飞; 袁小辉; 张德明; 郝本华; 樊明敬
Original assignee: 青岛海尔空调器有限总公司; 青岛海尔空调电子有限公司; 海尔智家股份有限公司
Priority date: 2021-03-29
Filing date: 2021-11-02
Publication date: 2022-10-06
Also published as: CN113091316A; CN113091316B

Abstract

The present application relates to the technical field of air treatment devices, and disclosed are a fan heater internal heating assembly, a fan heater and a fan heater heating control method. The fan heater comprises a machine housing, a heating element and supporting plate assemblies, which are respectively arranged on two sides of the heating element. The heating element comprises a plurality of PTC electric heaters, which are arranged side by side. Each supporting plate assembly comprises a supporting plate body, wherein the rear end of the supporting plate body is connected to a rear side of the machine housing; the supporting plate bodies, which are arranged on two sides of the heating element, are correspondingly supported by means of the two sides of the heating element; and the supporting plate bodies are obliquely arranged relative to a horizontal direction. In the fan heater internal heating assembly, the fan heater and the fan heater heating control method provided in the present application, multiple rows of PTC electric heaters are provided to serve as the heating element, such that relatively large heating power can be provided, thereby facilitating rapid heating; the heating element is supported and fixed by means of the arrangement of the supporting plate assemblies, and a simple structure thus facilitates installation of the heating element; and in addition, the heating element is arranged in an inclined manner, thereby facilitating increasing of the heat supply amount.

Description

Heater interior heating assembly, heater and heater heating control method

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of the Chinese patent application filed on March 29, 2021 with the application number of 202110335279.9 and the title of "Internal Heating Component of Fan Heater, Fan Heater and Fan Heater Heating Control Method", which is incorporated by reference in its entirety This article.

technical field

The present application relates to the technical field of air treatment equipment, and in particular, to an internal heating component of a heater, a heater and a heating control method for the heater.

Background technique

A heater is a device that emits warm air. Generally speaking, the maximum temperature is about 20-80 °C. It includes three parts: heating, blowing, and temperature and blowing control and protection. The heater is a combined unit composed of a fan, a motor and a heating element. It is suitable for various types of rooms where the air is allowed to recirculate. When the air does not contain dust and flammable gases, it can be used as a circulating air heating device. use. The heater is mainly composed of a heating element and a fan. The heating element dissipates heat, and then the fan is sent out to adjust the indoor air temperature. The heater unit is suitable for forced circulation air heating in various types of workshops and large buildings. It can make the room temperature reach the required temperature in a short time. It is also more suitable for areas that require rapid heating such as southwest and northwest. The problem of insufficient rapid heating power.

The existing heaters have the problems of insufficient rapid heating power and the heating elements often need to be connected and fixed with the casing, the connection structure is complicated, and the installation and fixing are inconvenient.

SUMMARY OF THE INVENTION

The present application provides an internal heating component of a heater, a heater and a heating control method for the heater, which are used to solve the problem that the existing heater has insufficient rapid heating power and the heating element often needs to be connected and fixed with the casing, and the connection structure is complicated and inconvenient. Installation fixed issues.

The application provides an internal heating assembly for a fan heater, wherein the fan heater includes a casing, a heating element and a support plate assembly respectively disposed on both sides of the heating element, and the heating element includes a plurality of PTC electric heaters arranged side by side, so The supporting plate assembly includes a supporting plate body, the rear end of the supporting plate body is connected to the rear side of the casing, the front end of the supporting plate body is connected to the front side of the casing, and the two sides of the heating element are correspondingly supported and placed The pallet bodies on both sides are inclined relative to the horizontal direction.

According to the internal heating assembly for a heater provided by the present application, the supporting plate assembly further comprises a first connecting member that is flexibly connected to the rear end of the supporting plate body and a second connecting member that is flexibly connected to the front end of the supporting plate body. A connecting piece, the first connecting piece is used to connect to the rear shield of the casing, and the second connecting piece is used to connect to the front panel or side plate of the casing.

According to the internal heating assembly of the heater provided by the present application, an intermediate connecting piece is provided between the first connecting piece and the rear guard, the intermediate connecting piece comprises a zigzag structure, and the first connecting piece is connected with the zigzag structure. The protruding parts are connected, and the two sides of the double-shaped structure are connected with the rear guard plate.

According to the internal heating assembly of the heater provided by the present application, a limit block is provided corresponding to the outer periphery of the support plate body and the heating element, and the limit block is used to limit and fix the heating element.

According to the internal heating assembly of the heater provided by the present application, the heating element is provided with a connecting section with a smaller width near the lower end, and the side of the heating element forms a step surface on the side of the connecting section near the higher end of the heating element, The limiting blocks are respectively provided at the positions of the support plate body corresponding to the side surfaces of the stepped surface facing the lower end of the heating element and the positions corresponding to the side edges of the heating element.

The internal heating assembly for a heater provided according to the present application further includes a fixing plate for connecting to the rear guard plate, the fixing plate is used for connecting and fixing the temperature detection element and is arranged corresponding to the air outlet of the casing.

According to the internal heating assembly of the heater provided by the present application, the supporting plate body is arranged below the air outlet at the top of the casing, and the supporting plate body is inclined downward from the rear side to the front side of the casing, so The fixed plate is intersected and connected to the first connecting piece.

The application also provides a fan heater, including the above-mentioned internal heating assembly of the fan heater, a volute air duct is provided under the interior of the casing, an air inlet is provided under the casing, and an air inlet is provided above the casing An air outlet, a fan is arranged in the volute air duct, and the air duct inlet of the volute air duct is communicated with the air inlet, and the air duct outlet of the volute air duct faces the heating element upward, and the heating The element is fixed between the air duct outlet and the air outlet, and the temperature detection element is fixed above the heating element and corresponds to the air duct outlet.

The present application also provides a heating control method for a heater, based on the internal heating component of the heater, including: detecting and obtaining an indoor temperature; controlling the number of PTC electric heating turned on according to the indoor temperature; detecting and obtaining the continuous working time of each PTC electric heating; When the continuous working time of a PTC electric heater reaches a preset time, the PTC electric heater is turned off, and another PTC electric heater in an off state is turned on at the same time.

According to the heater heating control method provided by the present application, the method further includes: detecting and obtaining the outlet air temperature of the heater; when the outlet air temperature is greater than a preset temperature, reducing the number of PTC electric heaters turned on and/or increasing the fan speed.

The present application provides an internal heating component of a heater, a heater and a heating control method for the heater. Multiple rows of PTC electric heaters are arranged as heating elements, which can provide larger heating power and is conducive to realizing rapid heating; The two sides of the element are correspondingly provided with supporting plate assemblies to support and fix the heating element. The heating element can be placed after the connection of the supporting plate assembly is completed to realize the installation and fixing of the heating element. The simple structure can facilitate the installation of the heating element, and the supporting plate assembly On both sides of the heating element, the heating element will not be blocked by a large area, which can prevent the fixed structure from affecting the heating of the heating element; in addition, the heating element is arranged in an inclined state through the support plate assembly, which is also conducive to increasing the heating element. The setting area of is beneficial to increase the heat supply and better ensure the heating effect.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1 is the overall structure schematic diagram inside the heater provided by the application;

Fig. 2 is the partial enlarged schematic diagram of part A in Fig. 1 provided by this application;

3 is a schematic side view of the pallet assembly provided by the present application;

4 is a schematic front view of a pallet assembly provided by the present application;

Fig. 5 is the overall schematic diagram of the pallet assembly provided by the present application;

6 is a schematic front view of the connection between the pallet assembly provided by the present application and the heating element;

Fig. 7 is the overall schematic diagram of the connection between the pallet assembly provided by the present application and the heating element;

FIG. 8 is a partial enlarged schematic view of the B part in FIG. 7 provided in the present application.

Reference number:

1: rear shield; 2: heating element; 3: pallet assembly; 31, pallet body; 32: first connecting piece; 33: second connecting piece; 331: connecting piece; 34: wiring hole; 35: Reinforcing slot; 36: Bending edge; 37: Limit block; 38: Intermediate connector; 4: Volute air duct; 5: Fan; 6: Fixing plate; 61: Card slot; 62: Positioning slot; 63: Walk Wire groove; 71: Box body; 711: Claw; 712: Positioning post; 72: Cover body.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application more clear, the technical solutions in the present application will be described clearly and completely below with reference to the accompanying drawings in the present application. The described embodiments are part of the embodiments of the present application, while Not all examples. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

The following describes in detail the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the present application, but should not be construed as a limitation to the present application.

The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the application. Furthermore, this application may repeat reference numerals and/or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and/or arrangements discussed. In addition, this application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the applicability of other processes and/or the use of other materials.

The following describes the heating component inside the heater, the heater, and the heating control method for the heater according to the present application with reference to FIGS. 1 to 8 .

Referring to FIG. 1 , the present embodiment provides an internal heating assembly for a fan heater, wherein the fan heater includes a casing, and the internal heating assembly for the fan heater includes a heating element 2 and a support plate assembly 3 respectively provided on both sides of the heating element 2. The heating element 2 includes a plurality of PTC electric heaters arranged side by side, the pallet assembly 3 includes a pallet body 31, the rear end of the pallet body 31 is connected to the rear side of the casing, and the front end of the pallet body 31 Connected to the front side of the casing, the two sides of the heating element 2 support the supporting plate body 31 placed on both sides correspondingly, and the supporting plate body 31 is inclined relative to the horizontal direction.

That is, the heating element 2 is supported and fixed inside the casing by the supporting plate assembly 3 , and the heating element 2 is fixed obliquely by the supporting plate assembly 3 . The support plate assembly 3 can be obliquely connected to the wall surface of the casing, and then the heating element 2 is placed on the support plate body 31 to realize the inclined installation and fixation of the heating element 2 . Supporting plate assemblies 3 are respectively disposed on both sides of the heating element 2 , so that the two sides of the heating element 2 are supported on the supporting plate assemblies 3 on both sides in a one-to-one correspondence. The fixing structure of the heating element 2 is mainly used for the installation and fixing of the heating element 2 in the vertical air treatment equipment.

This embodiment provides an internal heating component of a heater, which is provided with multiple rows of PTC electric heating elements as heating elements, which can provide greater heating power and is conducive to rapid heating; The plate assembly 3 realizes the support and fixation of the heating element 2, and the simple structure can facilitate the installation of the heating element 2, and the support plate assembly 3 is on both sides of the heating element 2, which will not cause a large area of the heating element 2. Block, which can prevent the fixed structure Influence on the heating of the heating element 2; in addition, setting the heating element 2 in an inclined state through the support plate assembly 3 is also beneficial to increase the setting area of the heating element 2, which is beneficial to increase the heat supply and better ensure the supply of the heating element 2. thermal effect.

On the basis of the above-mentioned embodiment, further, referring to FIG. 3 and FIG. 4 , the support plate assembly 3 further includes a first connecting member 32 flexibly connected to the rear end of the support plate body 31 , and a first connecting member 32 connected to the support plate body 31 The front end of the board body 31 is bent and connected to a second connecting piece 33 , the first connecting piece 32 is used to connect to the rear panel 1 of the casing, and the second connecting piece 33 is used to connect to the front panel of the casing or side panels.

Because the pallet body 31 is inclined, the rear end of the pallet body 31 is bent and connected to the first connecting piece 32 and the front end of the pallet body 31 is connected to the second connecting piece 33, which can facilitate the pallet assembly 3 to connect with the machine. The connection of the shell is fixed. A bent connection is a connection with a certain angle.

Specifically, referring to FIG. 3 , the first connecting member 32 can be set in a vertical state; that is, the first connecting member 32 and the rear shield 1 of the casing are in a parallel state, which can facilitate the first connecting member 32 and the rear shield 1 Connection. Similarly, the second connecting member 33 can be set in an opposite state; that is, making the second connecting member 33 and the front panel of the casing be in an opposite state can facilitate the connection between the second connecting member 33 and the front panel or side panel of the casing.

On the basis of the above-mentioned embodiment, further, referring to FIG. 1 and FIG. 2 , an intermediate connecting piece 38 is provided between the first connecting piece 32 and the rear fender 1 . In this embodiment, the first connecting member 32 is fixedly connected to the rear fender 1 through the intermediate connecting member 38 . The intermediate connecting piece 38 is used for a transitional connection, which can facilitate the fixing of the first connecting piece 32 .

Specifically, referring to FIG. 2 , the intermediate connecting member 38 includes a zigzag structure, the first connecting member 32 is connected to the protruding part of the zigzag structure, and the two sides of the zigzag structure are connected to the rear guard plate 1 . The zigzag structure includes a protruding part in the middle and two sides on both sides of the protruding part;

The intermediate connecting piece 38 is arranged to include a zigzag structure, and the protruding part of the zigzag structure is connected to the first connecting piece 32, so that the first connecting piece 32 can be separated from the rear guard 1 by a certain distance, which can facilitate the first connection. The connection between the component 32 and the intermediate connector 38 can make the heating element 2 and the rear shield 1 spaced a certain distance, which can avoid the heat dissipation caused by the contact between the heating element 2 and the rear shield 1, and the distance can also facilitate some wires, etc. Wire harness through.

Specifically, a structure such as bolts can be used to facilitate connection and fixation between the first connector 32 and the protruding part of the zigzag structure; the two ends of the zigzag structure of the intermediate connector 38 can be attached to the rear guard 1 by using Spot-welded connection structure to ensure the sealing of the casing and prevent heat loss.

Further, the intermediate connecting member 38 may be provided with a plurality of zigzag structures along the vertical direction, and may also be arranged side by side with a plurality of zigzag structures along the width direction of the rear fender 1 . A plurality of zigzag structures are connected to a plurality of places of the first connecting member 32 . The number of specific glyph structures, that is, the number of connecting parts of the first connecting piece 32 and the intermediate connecting piece 38 is not limited, for the purpose of stably fixing the pallet assembly 3 and the heating element 2 .

Further, the intermediate connector 38 can also be of other structures, such as a Z-shaped structure or others, for the purpose of realizing the connection and fixation with the first connector 32 and the rear shield 1 and ensuring the sealing performance of the rear shield 1 , there is no specific limitation.

Further, referring to FIGS. 1 and 5 , a side of the second connecting member 33 close to the corresponding side plate is connected with a connecting piece 331 in a cantilever state, and the connecting piece 331 is used for connecting to the side plate. The second connecting piece 33 corresponds to the side plate, that is, the side plate close to the second connecting piece 33 . The pallet assemblies 3 on both sides have two second connecting pieces 33, wherein the second connecting piece 33 on the pallet assembly 3 on one side is close to the side plate on the side; The second connecting piece 33 is close to the side plate on the other side. The side of the second connecting member 33 close to the corresponding side plate, that is, the opposite side of the two second connecting members 33 in the two sets of pallet assemblies 3 .

The connecting piece 331 is in a cantilever state, that is, the connecting piece 331 is only connected with the second connecting piece 33 on one side, and is not connected on the other side. Providing the connecting piece 331 in a cantilever state can facilitate the connection and fixing of the connecting piece 331 and the side plate, so that the front end of the support plate assembly 3 is fixedly connected to the side plate. There is no need to connect with the front panel to avoid interference with some functional components set on the front panel.

Specifically, the second connecting piece 33 and the connecting piece 331 may have a Z-shaped connecting structure as a whole. . A connecting seat can be provided on the side of the casing, and the connecting piece 331 can be connected and fixed with the connecting seat through bolts and other structures, so as to realize the connection and fixation of the front end of the pallet assembly 3 .

On the basis of the above embodiment, further referring to FIG. 6 , a limit block 37 is provided at the corresponding position of the support plate body 31 and the periphery of the heating element 2 , and the limit block 37 is used for the heating element 2 for limit fixing. That is, the heating element 2 is supported and placed on the pallet body 31 , and a limit block 37 is provided on the periphery of the heating element 2 . The position is stable.

A limit block 37 is arranged on the support plate body 31 to limit and fix the heating element 2. When installing the heating element 2, the heating element 2 can be placed in the space enclosed by the limit block 37, and then the heating element and the support can be carried out. The connection of the plate body greatly improves the installation convenience of the heating element 2, facilitates the operation, and reduces the installation difficulty.

On the basis of the above-mentioned embodiment, further, referring to FIG. 7 , in this embodiment, the side edge of the heating element 2 is provided with a stepped surface. That is, the sides of the heating element 2 are not arranged in the same direction, but have stepped surfaces. The limiting blocks 37 are respectively provided on the supporting plate body 31 corresponding to the side surface of the stepped surface facing the lower end of the heating element 2 and the side corresponding to the side edge of the heating element 2 .

That is, a limiting block 37 is provided at the side of the stepped surface facing the lower end of the heating element 2 , and the limiting block 37 cooperates with the side surface of the stepped surface facing the lower end of the heating element 2 to limit the position. That is, when the front end of the heating element 2 is set lower as shown in FIG. 1 , a limit block 37 is set on the front side of the step, which can limit and fix the heating element 2 on the front side, so as to prevent the heating element 2 from supporting The inclined surface of the board body 31 falls. In another embodiment, the heating element 2 can also be set to a state with a lower rear end. In this case, the step surface should have a side facing the rear end, and a limit block 37 is provided on the rear side of the step surface. The heating element 2 is limited and fixed on the side to prevent the heating element 2 from falling along the inclined surface of the support plate body 31 .

In addition, limit blocks 37 are provided on the sides of the heating element 2 , so that the limit blocks 37 on the two sets of pallet assemblies 3 can limit and fix the heating element 2 in the width direction. Further, a plurality of limiting blocks 37 are provided along the length direction of the heating element 2 at the positions corresponding to the side edges of the heating element 2 and the supporting plate body 31 . The length direction of the heating element 2 is the direction from the front side of the heating element 2 to the rear side of the casing; the width direction of the heating element 2 is the width direction of the casing. The width direction of the casing is a horizontal direction perpendicular to the front-rear direction of the casing. Preferably, limit blocks 37 may be respectively provided at the corresponding positions at the front end and the corresponding positions at the rear end of the heating element 2 . The limit fixing of the heating element 2 can be better achieved in the width direction.

Further, referring to FIG. 7 , in this embodiment, the heating element 2 is provided with a connecting section with a smaller width near the lower end; the smaller width of the connecting section means that the width of the connecting section is smaller than the width of the heating element 2 near the higher end, thereby A stepped surface is formed on the side of the heating element 2 on the side of the connecting section close to the higher end of the heating element 2 . Limiting blocks 37 can be respectively provided on the side of the stepped surface facing the lower end and the adjacent outer side, as shown in FIG. 7 , the corners of the heating element 2 can be stably limited and fixed. In addition, the connecting section with a smaller width is provided, and the connecting section is also convenient for hand-holding, so as to facilitate the installation of the heating element 2 by the operator.

On the basis of the above-mentioned embodiment, further, referring to FIG. 7 , the supporting plate body 31 is provided with a penetrating wiring hole 34 at a position other than the corresponding heating element 2 . The part of the supporting plate body 31 corresponding to the heating element 2 , that is, the part where the supporting plate body 31 contacts the heating element 2 and supports the heating element 2 . The support plate body 31 corresponds to the part other than the heating element 2 , that is, the part that is not in contact with and supported by the heating element 2 . The wiring hole 34 penetrates through the support plate body 31 and can be used for the passage of wire harnesses such as wires, so as to facilitate the installation and connection of wire harnesses such as wires.

Further, in this embodiment, a long wire routing hole 34 may be provided on the support plate body 31 , as shown in FIG. 7 . In another embodiment, two or other numbers of wiring holes 34 may also be provided, and the shape of the wiring holes 34 may also be any shape such as a circle, which is not specifically limited.

On the basis of the above embodiment, further, the support plate assembly 3 is a sheet metal part; it has high heat resistance and is suitable for supporting and fixing the heating element 2 at a high temperature. The support plate assembly 3 can also be other metal parts for the purpose of stably supporting the heating element 2 and being able to adapt to the high temperature of the heating element 2 , which is not specifically limited. The pallet assembly 3 is an integral structure; that is, the pallet body 31 , the first connecting piece 32 and the second connecting piece 33 can be an integral connecting structure.

The included angle between the support plate body 31 and the vertical direction, that is, the rear fender 1 is 33-65°. That is, the inclination angle of the support plate body 31 and the heating element 2 relative to the vertical plane is 33-65°. Setting the inclination of the heating element 2 within this angle range can effectively increase the setting area, and is conducive to better heat exchange with the airflow, thereby improving the heating efficiency.

Further, the support plate body 31 can be inclined downward or upward relative to the rear fender 1 . FIG. 1 shows a state in which the pallet body 31 is inclined downward. At this time, the front end of the pallet body 31 and the heating element 2 is the lower end, and the rear end is the higher end. When the support plate body 31 is inclined upward relative to the rear shield 1 , the front end of the support plate body 31 and the heating element 2 is the higher end, and the rear end is the lower end.

Referring to FIG. 4 and FIG. 5 , the support plate body 31 is configured with a concave-convex reinforcing structure. Specifically, a reinforcing groove 35 can be provided on the supporting plate body 31, and the supporting plate body 31 has a concave-convex structure at the reinforcing groove 35, that is, one side of the supporting plate body 31 is in the shape of a groove at the position of the heating groove, and the other side is in a convex shape. . In this embodiment, an elongated reinforcing groove 35 may be provided on the support plate body 31 . In other embodiments, two or other numbers of reinforcing grooves 35 may also be provided, and the shape of the reinforcing grooves 35 may also be other, which is not specifically limited. The reinforcing structure may also include structures such as reinforcing ribs, which are not specifically limited.

Referring to FIGS. 3 and 5 , two sides of the pallet body 31 are provided with bent edges 36 . The arrangement of the reinforcement structure and the bent edge 36 can increase the strength of the pallet assembly 3 .

On the basis of the above-mentioned embodiment, further, referring to FIG. 1 , an internal heating assembly of a fan heater further includes a fixing plate 6 for connecting to the rear guard plate 1 , and the fixing plate 6 is used for connecting a fixed temperature The detection element is arranged corresponding to the air outlet of the casing. The rear shield 1 of the casing is located on the side wall at the rear of the casing. The fixing plate 6 is arranged inside the casing, and is connected to the rear shield 1 , that is, it is intersected and connected with the rear shield 1 , that is, there is a certain angle between the fixing plate 6 and the rear shield 1 , and is not in a parallel state. It is convenient to connect and fix the temperature detection element on the fixed plate 6 by setting the fixed plate 6 to intersect with the rear guard plate 1 .

The temperature detection element is fixed on the air outlet of the casing, that is, the corresponding position of the air outlet of the heater, through the fixing plate, and the temperature of the outlet air of the heater can be detected by the temperature detection element, so as to facilitate the control of the outlet air temperature, which is beneficial to Better meet the needs of users and ensure the heating effect.

On the basis of the above embodiment, further referring to FIG. 3 , the fixing plate 6 is provided with a card slot 61 , and the card slot 61 is used for matching and engaging with the temperature detection element.

On the basis of the above embodiment, further, the fixing plate 6 is further provided with a positioning groove 62, and the positioning groove 62 is used for matching and positioning with the temperature detection element.

On the basis of the above embodiment, further, the fixing plate 6 is further provided with a wire routing slot 63 penetrating one side. That is, the wiring slot 63 has a U-shaped structure, which is convenient for passing and fixing wire harnesses such as wires.

On the basis of the above embodiment, further, referring to Fig. 4 and Fig. 5 , the temperature detection element is connected to the fixing plate 6 through a fixing box, and the temperature detection element is placed inside the fixing box. The fixing box is provided with a clamping claw 711 matching with the clamping slot 61 and a positioning column 712 matching with the positioning slot 62 .

On the basis of the above-mentioned embodiment, further, the fixed box includes a box body 71 and a cover body 72. The box body 71 and the cover body 72 are connected by pulling or rotating on one side. The body 71 and the cover body 72 are respectively provided with hollow structures.

Referring to FIG. 8 , the clamping slot 61 and the positioning slot 62 may respectively be an opening structure passing through the fixing plate 6 . A clamping claw 711 can be provided on the box body 71, and the clamping claw 711 is used for engaging and connecting with the clamping groove 61 on the fixing plate 6 to realize the connection and fixing of the fixing box and the fixing plate 6. The structure is simple, and the connection and disassembly are convenient. That is, the clamping claw 711 can pass through the clamping groove 61 on the fixing plate 6 from one side of the fixing plate 6 to be stuck on the other side of the fixing plate 6 . Similarly, the box body 71 can be provided with a positioning post 712, which is used for inserting into the positioning slot 62 to position and fix the positioning box during installation, which is convenient for installation and improves stability.

Referring to FIG. 8 , in this embodiment, card slots 61 are respectively provided on both sides of the positioning slot 62 , so that the fixing box is positioned in the middle through the cooperation of the positioning column 712 and the positioning slot 62 , and the fixing box passes through the positioning column 712 on both sides. A clamping claw 711 is snap-connected with the fixing plate 6 , and the connection structure is relatively stable. In another embodiment, positioning posts 712 may be correspondingly set at the four corners of the fixing box, and claws 711 may be set at the middle of the fixing box. Correspondingly, positioning grooves may be set at the corresponding positions of the fixing plate 6 and the four corners of the fixing box. 62. A card slot 61 is provided at the corresponding position between the fixing plate 6 and the fixing box, so that the fixing box and the fixing plate 6 can also be firmly connected. The specific location and quantity of the card slot 61 and the positioning slot 62 may also be other, for the purpose of realizing the firm connection between the fixing box and the fixing plate 6 , which is not specifically limited.

Setting the temperature detection element to be connected with the fixing plate 6 through the fixing box can facilitate the detachable connection with the fixing plate 6 by setting the claw 711 and the positioning column 712 on the fixing box, so as to avoid damage and influence on the structure of the temperature detection element; The detection element is placed inside the fixed box, which can facilitate the setting of the temperature detection element. The fixing box is enclosed by the box body 71 and the cover body 72 to form an accommodating cavity, and the temperature detection element only needs to be fixed in the accommodating cavity. For example, a structure such as a support groove matching the temperature detection element can be arranged inside the fixed box to support the fixed temperature detection element, so as to realize the stable placement of the temperature detection element inside the fixed box. The setting structure is not limited.

The cover body 72 of the fixed box and the box body 71 are connected by pulling or rotating on one side, so that the opening and closing of the cover body 72 can be realized more conveniently. When the cover body 72 and the box body 71 are connected by pulling, chutes can be provided on the inner sides of the two opposite side walls of the box body 71 respectively, and the two sides of the cover body 72 are slidably connected with the chutes on both sides in a one-to-one correspondence, thereby realizing Pull-out connection structure. When the cover body 72 and the box body 71 are rotatably connected on one side, one side of the cover body and one side of the box body can be rotatably connected by a structure such as a pin shaft, and the specific structure can also be other, which is not limited.

The cover body 72 and the box body 71 are respectively provided with hollow structures, that is, the cover body 72 and the box body 71 are both provided with an opening structure through the wall surface, so that the hot air inside the casing can better pass through the box body 71 and flow through the temperature. The detection element ensures the smooth and accurate detection of the outlet air temperature by the temperature detection element. Specifically, referring to FIG. 8 , in this embodiment, a plurality of round holes can be provided on the cover body 72 , and a plurality of U-shaped notches can be provided on the box body 71 , which can be used for hollowing out and wiring. . The form and quantity of the hollow structure can also be other, which are not limited to those shown in FIG. 8 , and are not specifically limited.

Further, a through opening may be provided at the corresponding position of the box body 71 and the wire routing slot 63 to facilitate wire routing.

On the basis of the above-mentioned embodiment, further, the fixing plate 6 is connected to the first connecting member 32 in an intersecting manner. The fixing plate 6 is connected to the first connecting piece 32 , and is connected to the rear fender 1 through the connection between the first connecting piece 32 and the rear fender 1 .

Further, the supporting plate body 31 is inclined along the front-rear direction of the casing; and the supporting plate body 31 is inclined downward from the rear side to the front side of the casing. The support plate body 31 is used to be fixed between the air inlet at the bottom of the casing and the air outlet at the top. Therefore, the rear end of the supporting plate body 31 is higher than the front end, and is arranged close to the air outlet. At this time, the fixing plate is connected to the first connecting piece, so that the fixing plate is located above the heating element and close to the air outlet, so that the temperature detecting element can detect the flow rate. The outlet air temperature through the heating element.

Further, referring to FIG. 1 , in this embodiment, the fixing plate 6 and the first connecting member 32 can be integrally connected by bending, that is, the fixing plate 6 and the first connecting member 32 can be integrally structured and are in a bent state, and are connected through the first connection. The connection of the component 32 to the rear fender 1 can realize the connection and fixation of the fixing plate 6 . And in this embodiment, the first connecting piece 32 connected to the fixing plate 6 can be extended, that is, the first connecting piece 32 connected to the fixing plate 6 (the first connecting piece on the right side) is compared with the first connecting piece that is not connected to the fixing plate 6 . The piece 32 (the first connecting piece on the left side) is extended upwards by a section, which can be easily bent and connected to the fixing plate 6 .

Referring to FIG. 4, in another embodiment, the fixing plate 6 can also be L-shaped, and one side of the L-shaped fixing plate is connected to the first connecting piece 32, and the connection and fixing can be realized by bolts, etc. The connection between the component 32 and the rear fender 1 realizes the connection and fixation of the fixing plate 6 and the rear fender 1 . The other side of the L-shaped fixing plate is used to connect the temperature detection element.

Referring to FIG. 5 , in other embodiments, the fixing plate 6 can also be provided with a connecting section for being adjacent to the first connecting piece 32 , and the connecting piece and the first connecting piece 32 can be connected and fixed through structures such as bolts or snaps , by connecting the fixing plate 6 on the first connecting piece 32 , the fixing of the fixing plate 6 is realized. The connection structure between the fixing plate 6 and the first connecting piece 32 can be flexibly set according to the actual situation, in order to realize the fixing of the fixing plate and the intersection of the fixing plate and the rear guard plate to facilitate the setting of the temperature detection element. limited.

On the basis of the above embodiments, this embodiment further provides a fan heater, the fan heater includes the internal heating assembly of the fan heater described in any of the above embodiments, and a volute fan is arranged under the inside of the casing. The lower part of the casing is provided with an air inlet, the upper part of the casing is provided with an air outlet, a fan is arranged in the volute air duct, and the air duct inlet of the volute air duct is connected with the air inlet. The tuyere is connected, and the air duct outlet of the volute air duct is upward toward the heating element, the heating element is fixed between the air duct outlet and the air outlet, and the temperature detection element is fixed above the heating element and is connected to the heating element. The outlet of the air duct corresponds to the position.

That is to say, the air handling equipment enters the air from the air inlet at the bottom of the casing. Driven by the fan 5, the air flow enters the volute air duct 4 through the air duct inlet, and then blows out from the air duct outlet to the heating element 2, and flows through the heating element 2. After the element 2 is heated up, it is blown out from the air outlet on the top of the casing.

The temperature detection element corresponds to the air outlet of the casing in the height direction, and corresponds to the air duct outlet of the volute air duct in the horizontal direction. Specifically, referring to FIG. 1 , in this embodiment, the air duct outlet of the volute air duct is close to the right side. At this time, the fixing plate is also set close to the right side inside the casing, and can be set on the first side of the support plate assembly on the right side. On the connecting piece, the temperature detection element is fixed above the air duct outlet of the volute air duct, which is beneficial to improve the accuracy of temperature detection. In another embodiment, when the outlet of the air duct is close to the left side, the fixing plate can also be provided on the first connecting piece of the left pallet assembly.

On the basis of the above embodiments, this embodiment further provides a heating control method for a fan heater. Including: detecting and obtaining the indoor temperature; controlling the number of PTC electric heating turned on according to the indoor temperature; detecting and obtaining the continuous working time of each PTC electric heating; when the continuous working time of any PTC electric heating reaches the preset time, turn off the PTC electric heating, At the same time, turn on another PTC electric heater in the off state.

The heater heating control method provided in this embodiment can detect and obtain the indoor temperature, and when the indoor temperature is lower than the first preset temperature, for example, it can be 10°C, the number of PTC electric heating can be controlled to be greater than or equal to the first number; When the indoor temperature is greater than or equal to the first preset temperature and less than the second preset temperature, for example, 20°C, the number of PTC electric heating that can be turned on is less than the first number and greater than or equal to the second number; when the indoor temperature is greater than or equal to the second preset temperature, The number of controllable PTC electric heating to be turned on is smaller than the second number. Specifically, the first number may be 5, and the second number may be 3; this embodiment is only for illustration, and in other embodiments, the specific values of the first number and the second number, as well as the first preset temperature and the second preset temperature The specific value of the set temperature can be flexibly set according to the actual situation without limitation.

According to the indoor temperature to control and adjust the number of electric heating turned on, the heat supply of the heater can better match the indoor heat demand, which is conducive to saving energy on the basis of meeting the heating demand, and improving the level of intelligence .

Further, the present embodiment also proposes a control method for turning on the PTC electric heating by alternate operation. That is, when the number of PTC electric heaters turned on is less than the total number of PTC electric heaters, and the continuous operation time of the PTC electric heaters in the open state reaches the preset time, the remaining PTC electric heaters in the closed state are used to replace part or all of the PTC electric heaters in the open state. . Because most of the electric heating is fully turned on in the initial stage of the heater, the duration of this situation is generally not long. Therefore, this control method is suitable for the control of the heater during most of the running time.

Specifically, for example, there are 6 rows of PTC electric heaters in this embodiment, and 2 rows of PTC electric heaters need to be operated at the current room temperature. When the electric heating of the row and the second row continues to run for a preset time, such as 1 hour, the electric heating of the first row and the second row can be turned off, and the electric heating of the third row and the fourth row can be turned on at the same time; in the third row When the electric heating of the fourth row and the fourth row continue to run for a preset time, the electric heating of the third row and the fourth row is turned off, and the electric heating of the other two rows is selected to be turned on. Therefore, under the condition of satisfying the heating demand, the alternate operation of the electric heating is realized, which is beneficial to improve the service life of the electric heating.

On the basis of the above embodiment, further, a heating control method for a heater further includes: detecting and obtaining the outlet air temperature of the heater; when the outlet air temperature is greater than a preset temperature, reducing the number of PTC electric heaters turned on and/or Increase the fan speed. The temperature detection element can detect the outlet air temperature. When the outlet air temperature is greater than the preset temperature, the outlet air temperature will be too high, which will cause discomfort when blowing out. Therefore, reducing the number of PTC electric heating on and/or increasing the fan speed will increase the speed. The method of large air flow speed to avoid excessive air temperature.

On the basis of the above embodiment, further, this embodiment proposes a high-power heater 5 based on the problem of insufficient rapid heating power of cabinets in the southwest and northwest regions in the current market. The fan heater 5 comprises a casing, a volute air duct 4 arranged below the inside of the casing, a heating element 2 arranged above the volute air duct 4 inside the casing, and a temperature detection element arranged above the heating element 2. In this embodiment, the heating element 2 can be a PTC electric heating assembly. The PTC electric heating assembly is fixed inside the casing through the support plate assembly 3 .

The fixing method of the support plate assembly 3 is specifically two sheet metal parts on the left and right in the cabinet. The front end of the left support plate is fixed with the left plate screws, the rear end is fixed with the rear guard plate 1; the front end of the right support plate is fixed with the right plate screws. , the rear end is fixed with the rear guard plate 1. Electric heating is fixed on the left and right sheet metal. The distance between the front end of the left and right pallets from the air duct outlet of the volute air duct 4 is similar to the distance between the rear end of the left and right pallets from the air outlet, and the angle between the electric heating pallet assembly 3 and the rear guard plate 1 is 33°-65°. The temperature detection element is fixed by the fixing plate.

The heater can also be sensed by a temperature sensor, and the logic program of the circuit board can realize PTC electric heating multi-row and single-row control, and the electric heating power can be adjusted according to the temperature. , and is conducive to improving the lifespan.

In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", etc. is based on the orientation or positional relationship shown in the accompanying drawings, only for the purpose of It is convenient to describe the application and to simplify the description, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the application.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present application, "plurality" means two or more, unless otherwise expressly and specifically defined.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be The technical solutions described in the foregoing embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions in the embodiments of the present application.

Claims

An internal heating assembly for a fan heater, wherein the fan heater includes a casing, and it is characterized in that the heating assembly includes a heating element and a support plate assembly respectively arranged on both sides of the heating element, and the heating element includes a plurality of PTC electric circuits arranged side by side. For heating, the pallet assembly includes a pallet body, the rear end of the pallet body is connected to the rear side of the casing, the front end of the pallet body is connected to the front side of the casing, and the two sides of the heating element The supporting plate bodies placed on both sides are correspondingly supported, and the supporting plate bodies are inclined relative to the horizontal direction.
The internal heating assembly for a fan heater according to claim 1, wherein the support plate assembly further comprises a first connecting piece that is bent and connected to the rear end of the support plate body and a front end of the support plate body. The second connecting piece is bent and connected, the first connecting piece is used for connecting to the rear shield of the casing, and the second connecting piece is used for connecting to the front panel or side plate of the casing.
The internal heating assembly for a fan heater according to claim 2, wherein an intermediate connecting piece is arranged between the first connecting piece and the rear guard plate, the intermediate connecting piece comprises a zigzag structure, and the first connecting piece The parts are connected with the protruding parts of the zigzag structure, and the two sides of the zigzag structure are connected with the rear guard plate.
The internal heating assembly for a heater according to any one of claims 1 to 3, wherein a limit block is provided at the corresponding position of the support plate body and the periphery of the heating element, and the limit block is used for The heating element is limited and fixed.
The internal heating assembly of the fan heater according to claim 4, wherein the heating element is provided with a connecting section with a smaller width near the lower end, and the side edge of the heating element is at the connecting section near the higher end of the heating element. A stepped surface is formed on one side, and the limiting blocks are respectively provided at the positions of the support plate body corresponding to the side surface of the stepped surface facing the lower end of the heating element and the positions corresponding to the side edges of the heating element.
The internal heating assembly for a heater according to claim 2, further comprising a fixing plate for being intersected and connected to the rear guard plate, the fixing plate being used for connecting and fixing the temperature detection element and being connected to the outlet of the casing. The corresponding setting of the air outlet.
The internal heating assembly for a fan heater according to claim 6, wherein the support plate body is disposed below the air outlet at the top of the casing, and the support plate body extends from the rear side to the front side of the casing The fixed plate is arranged obliquely downward, and the fixing plate is intersected and connected to the first connecting piece.
A fan heater, characterized in that it includes the internal heating assembly of the fan heater according to any one of the above claims 1-7, a volute air duct is arranged under the inside of the casing, and an inlet is arranged under the casing. An air outlet, an air outlet is arranged above the casing, a fan is arranged in the volute air duct, and the air duct inlet of the volute air duct is communicated with the air inlet, and the wind of the volute air duct is connected with the air inlet. The duct outlet faces upward toward the heating element, the heating element is fixed between the air duct outlet and the air outlet, and the temperature detection element is fixed above the heating element and corresponding to the air duct outlet.
A heating control method for a fan heater, characterized in that, based on any one of the above-described heating fan internal heating components in claims 1-7, comprising:

Detect the indoor temperature;

Control the number of PTC electric heating turned on according to the indoor temperature;

Detect and obtain the continuous working time of each PTC electric heating;

When the continuous working time of any PTC electric heating reaches the preset time, the PTC electric heating is turned off, and the other PTC electric heating in the off state is turned on at the same time.
The air heater heating control method according to claim 9, characterized in that, further comprising:

Detect and obtain the outlet air temperature of the heater;

When the outlet air temperature is greater than the preset temperature, reduce the number of PTC electric heating turned on and/or increase the fan speed.