Warmer

Abstract

The utility model provides a warmer, the warmer comprises a casing, a mounting rack, a heating body, an axial flow fan and a control unit, the mounting rack, the heating body, the axial flow fan and the control unit are arranged in the casing, the control unit is respectively and electrically connected with the heating body and the axial flow fan, an air duct is arranged in the mounting rack, the casing is provided with an air outlet corresponding to the air duct, and the air outlet is communicated with the air duct. The axial flow fan is arranged to exhaust air to the air duct, the heating body is arranged in the air duct, the air duct comprises an air inlet section right facing the axial flow fan, and the caliber of the air inlet section is gradually reduced in the air exhaust direction of the air duct. The caliber of the air inlet section of the air duct of the warmer is gradually reduced in the air exhaust direction, so that the air inlet section can play a role in guiding air, air is conveniently guided for the axial flow fan, an air flow path is optimized, the heat transfer efficiency is improved, and the warmer can rapidly raise the indoor temperature.

Description

Technical Field

[0001] The utility model belongs to the technical field of household appliances, and in particular relates to a heater. Background Art

[0002] With the continuous progress of society and the continuous improvement of people's living standards, the demand for heaters in cold weather is increasing, and they have become an indispensable heating device for modern families.

[0003] A heater usually consists of a heating element and an axial flow fan. The heating element provides warmth by radiating heat, while the axial flow fan is responsible for supplying air to the heating element, so that the heating element can heat the cold air into hot air, and then effectively transport the heat to the outside to increase the indoor temperature.

[0004] In order to ensure that the axial flow fan can properly deliver air to the heating element in the air duct, the heater is usually designed with an air guide structure, such as an air guide frame or an air guide plate. The main function of the air guide structure is to accurately guide the air output by the axial flow fan into the air duct, prevent the air from dispersing inside the heater, and ensure that the heat can be efficiently transferred to the environment.

[0005] Although the air guide structure plays an important role in the heater, its existence also brings a series of problems. First, the addition of the air guide structure increases the overall volume of the heater, which is not conducive to the miniaturization of the heater, thereby limiting the application of the heater in different spaces. Secondly, the configuration of the air guide structure increases the manufacturing cost of the heater, which is not conducive to the market promotion and popularization of the heater. In addition, the assembly gap between the air guide structure and the air duct is prone to air leakage, which not only affects the heating effect of the heater, but also makes the heater produce louder noise when working, reducing the user experience. Utility Model Content

[0006] The primary purpose of the present invention is to solve at least one of the above problems and provide a heater.

[0007] In order to meet the various purposes of the utility model, the utility model adopts the following technical solutions:

[0008] A heater is provided to meet one of the purposes of the utility model, including a shell and a mounting frame arranged in the shell, a heating element, an axial flow fan and a control unit, the control unit is electrically connected to the heating element and the axial flow fan respectively, an air duct is provided in the mounting frame, the shell is provided with an air outlet corresponding to the air duct, the axial flow fan is configured to exhaust air into the air duct, the heating element is arranged in the air duct, the air duct includes an air inlet section facing the axial flow fan, and the diameter of the air inlet section is gradually reduced along the exhaust direction of the air duct.

[0009] Furthermore, the air duct also includes an air outlet section facing the air outlet, the air outlet section is connected to the air inlet section, and the diameter of the air outlet section gradually decreases or remains unchanged along the exhaust direction.

[0010] Specifically, the air inlet section is provided with a plurality of inner walls, and the inner walls are arranged obliquely relative to the extension axis of the air inlet section.

[0011] Specifically, the mounting frame is an integrally formed structure.

[0012] Specifically, the heating element is provided with a first terminal, the control unit is provided with a second terminal, the mounting frame is provided with a mounting plate, the mounting plate constitutes one of the side walls of the air duct, the mounting plate is provided with a connecting groove, and the first terminal and the second terminal are connected in the connecting groove.

[0013] In one embodiment, the heater also includes a temperature limiter, the control unit is electrically connected to the temperature limiter, a mounting groove is opened on the side wall of the mounting frame, the temperature limiter is arranged in the mounting groove, a limiting structure is protruded in the outer shell, the limiting structure is arranged toward the temperature limiter, and the limiting structure is abutted against the temperature limiter.

[0014] Furthermore, the limiting structure is provided with a limiting groove, and the limiting groove is plugged into the base plate of the temperature limiter.

[0015] In one embodiment, the control unit is integrated on a circuit board, a heat insulation board is provided on the top of the mounting frame, and the control circuit board is arranged on the heat insulation board.

[0016] In one embodiment, the mounting frame is further provided with a plurality of wiring grooves.

[0017] Specifically, a connecting structure is provided on the mounting frame, a matching structure is provided on the axial flow fan, and the connecting structure and the matching structure are fixedly connected.

[0018] Compared with the prior art, the present invention has many advantages, including but not limited to:

[0019] Firstly, an air duct is provided in the mounting frame of the heater of the present invention, and the air duct is provided with an air inlet section. The diameter of the air inlet section is gradually reduced along the exhaust direction of the air duct, so that the air inlet section can play a role in guiding the wind, ensuring that the wind can be accurately blown to the heating element, thereby improving the heat transfer efficiency and enabling the heater to increase the external environment temperature more quickly.

[0020] Secondly, since the heater of the present invention is provided with an air inlet section, the heater of the present invention does not need to be equipped with an air guide structure like a traditional heater, thereby reducing the air guide structure of the heater of the present invention compared to the traditional heater, thereby making the heater of the present invention easy to miniaturize, and since the number of parts is reduced, the production cost of the heater can be reduced.

[0021] Thirdly, the air inlet section of the heater of the utility model can play the role of the air guide structure of the traditional heater, so that the heater of the utility model does not need to be provided with an air guide structure, and thus the heater of the utility model will not have the assembly gap between the air guide structure and the air duct of the traditional heater, thereby eliminating air leakage, reducing the noise when the heater is working, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0023] Figure 1 It is a three-dimensional schematic diagram of a heater from a first perspective according to a typical embodiment of the present invention.

[0024] Figure 2 It is a stereoscopic schematic diagram of the heater from a second viewing angle according to a typical embodiment of the utility model.

[0025] Figure 3 The figure is a schematic diagram of the circuit principle of a heater according to a typical embodiment of the present invention.

[0026] Figure 4 This is a schematic diagram of the exploded view of the outer shell and internal components of the heater according to a typical embodiment of the present invention.

[0027] Figure 5 This is a schematic diagram of the assembly of a mounting frame, a heating element, an axial flow fan and a circuit board of a typical embodiment of the heater of the present utility model.

[0028] Figure 6 This is a structural schematic diagram of a mounting frame of a heater from a first perspective according to a typical embodiment of the utility model.

[0029] Figure 7 It is a structural schematic diagram from a second perspective of the mounting frame of the heater in a typical embodiment of the utility model.

[0030] Figure 8 This is a schematic structural diagram of the heating element of the heater in a typical embodiment of the utility model.

[0031] Fig. 9 This is a schematic diagram of the interior of the housing of a heater according to a typical embodiment of the present invention.

[0032] Fig.10 for Fig. 9 Magnified view of part A. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and cannot be interpreted as limiting the present invention.

[0034] It will be understood by those skilled in the art that, unless expressly stated, the singular forms "one", "said", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present utility model refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or their groups. It should be understood that when we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there may be intermediate elements. In addition, the "connection" or "coupling" used here may include wireless connection or wireless coupling. The term "and / or" used here includes all or any unit and all combinations of one or more associated listed items.

[0035] Those skilled in the art will understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of ordinary technicians in the field to which the utility model belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as the meaning in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0036] The utility model provides a heater, which has an air inlet section in an air duct, and the diameter of the air inlet section is gradually reduced along the exhaust direction of the air duct, so that the air inlet section can play a role in guiding air, so that the heater does not need to be configured with a separate air guiding structure, which facilitates the miniaturization of the heater, reduces production costs, reduces noise during operation, and improves user experience.

[0037] In a typical embodiment of the present invention, Figures 1 to 4The heater 100 includes a shell 110, a mounting frame 120, a heating element 130, an axial flow fan 140 and a control unit 150. The mounting frame 120, the heating element 130, the axial flow fan 140 and the control unit 150 are arranged in the shell 110, and the control unit 150 is electrically connected to the heating element 130 and the axial flow fan 140 respectively.

[0038] Combination Figure 1 , Figure 4 and Figure 5 The mounting frame 120 is provided with an air duct 121, the housing 110 is provided with an air outlet 111 corresponding to the air duct 121, the heating element 130 is arranged in the air duct 121, the axial flow fan 140 is arranged corresponding to the air duct 121, and the axial flow fan 140 is used to exhaust air to the air duct 121.

[0039] When the heater 100 is working, the control unit 150 controls the axial flow fan 140 to work, and the axial flow fan 140 rotates to form wind, and the wind is blown out of the heater 100 through the air duct 121 and the air outlet 111 in turn; the control unit 150 controls the heating element 130 to work, so that the heating element 130 heats the cold air blown into the air duct 121 by the axial flow fan 140, so that the cold air becomes hot air, and then the hot air is blown out of the heater 100 through the air outlet 111 to heat the external environment and increase the ambient temperature. For example, the heater 100 is set indoors, and the hot air blown out of the heater 100 heats the room and increases the indoor temperature.

[0040] Combination Figure 6 and Figure 7 The air duct 121 is divided into an air inlet section 122 and an air outlet section 123 along the exhaust direction thereof, the air inlet section 122 is arranged corresponding to the axial flow fan 140, and the air outlet section 123 is arranged corresponding to the air outlet 111. The exhaust direction is the direction in which the air is blown out to the air outlet 111 along the air duct 121 after the axial flow fan 140 blows the air into the air duct 121. The axial flow fan 140 blows the air into the air inlet section 122, then blows the air to the air outlet section 123 through the air inlet section 122, and finally blows the air out of the heater 100 from the air outlet 111 through the air outlet section 123.

[0041] The diameter of the air inlet section 122 gradually decreases along the exhaust direction, so that the air inlet section 122 can play the role of the wind guide structure of the traditional heater. It can be understood that because the diameter of the air inlet section 122 gradually decreases along the exhaust direction, the air inlet section 122 can guide the wind output by the axial fan 140 to the heating element 130, ensuring that the wind can accurately blow to the heating element 130, thereby improving the heat transfer efficiency and enabling the heater 100 to increase the indoor temperature more quickly. Moreover, by setting the air inlet section 122, the loss of air volume can be reduced, the wind flow can be more concentrated, and the heating efficiency can be improved. The air inlet section 122 can also adjust the direction and speed of the wind flow so that the heat can be more evenly distributed in the indoor space, solving the problem of local overheating or uneven temperature, thereby improving the user's heating experience.

[0042] The air guide structure and air duct of a traditional heater are two independent components. There is an assembly gap between the air guide structure and the air duct, so that the wind output by the axial fan will invade the assembly gap, which will not only affect the overall air tightness of the heater and cause air leakage, but may also produce abnormal noise due to increased wind resistance or friction between components, thereby affecting the use effect of the heater and user experience.

[0043] However, the air inlet section 122 of the heater 100 of the present invention can play the role of the air guide structure of the traditional heater, so that the heater 100 of the present invention does not need to be provided with an air guide structure, and the heater 100 of the present invention will not have the assembly gap between the air guide structure and the air duct of the traditional heater, thereby eliminating the air leakage phenomenon, reducing the noise of the heater 100 when working, and improving the user experience.

[0044] In this embodiment, the diameter of the air inlet section 122 is linearly reduced and gradually transitioned along the exhaust direction to facilitate good air guidance. In one embodiment, the diameter of the air inlet section 122 is exponentially reduced and gradually transitioned along the exhaust direction.

[0045] The cross section of the air inlet section 122 in the exhaust direction is rectangular, so as to well receive the wind output by the axial flow fan 140. In one embodiment, the cross section of the air inlet section 122 in the exhaust direction is circular or elliptical.

[0046] In this embodiment, combined with Figure 6 and Figure 7The air inlet section 122 is provided with an extension axis, and the extension axis is extended along the exhaust direction. The air inlet section 122 is formed by a plurality of inner walls 1221, and the inner walls 1221 are arranged with an inclination relative to the extension axis, so that the diameter of the air inlet section 122 is gradually reduced along the exhaust direction. The inner wall 1221 is arranged at an acute angle with the extension axis, and the inner wall 1221 is a plane structure or an arc structure. In one embodiment, combined with Figure 7 The air inlet section 122 is formed by four inner walls 1221, and the inner walls 1221 are planar structures, so that the cross-section of the air inlet section 122 formed by the four inner walls 1221 in the exhaust direction is rectangular.

[0047] In a typical embodiment of the utility model, the air outlet section 123 is connected to the air inlet section 122, so that the air output by the axial flow fan 140 can be blown to the air outlet section 123 through the air inlet section 122. Specifically, the two ends of the air inlet section 122 are respectively the first end and the second end, and the two ends of the air outlet section 123 are respectively the first end and the second end, and the second end of the air inlet section 122 is connected to the first end of the air outlet section 123. In this embodiment, the shape and size of the second end of the air inlet section 122 are the same as the shape and size of the first end of the air outlet 111, so that the air inlet section 122 and the air outlet section 123 can be well transitionally connected.

[0048] The diameter of the air outlet section 123 gradually decreases along the exhaust direction or remains unchanged. When the diameter of the air outlet section 123 gradually decreases along the exhaust direction, the air outlet section 123 also plays a role in guiding the wind, so as to further guide the wind flowing in through the air inlet section 122. Figure 6 and Figure 7 When the diameter of the air outlet section 123 remains unchanged along the exhaust direction, the heating element 130 is conveniently installed in the air outlet section 123, so that the heating element 130 can be well fixed in the air outlet section 123. In this embodiment, it is recommended that the diameter of the air outlet section 123 remains unchanged along the exhaust direction to facilitate the installation of the heating element 130.

[0049] In this embodiment, the mounting frame 120 is provided with a connection structure, and the axial flow fan 140 is provided with a matching structure, and the connection structure is fixedly connected with the matching structure, so that the mounting frame 120 is fixedly connected with the axial flow fan 140. In this embodiment, the connection structure is a first screw hole, and the matching structure is a second screw hole. The first screw hole and the second screw hole are connected by bolts, so that the mounting frame 120 and the axial flow fan 140 are threadedly fixedly connected. In some embodiments, the connection structure includes a buckle, and the matching structure includes a slot, and the buckle is snapped with the slot, so that the mounting frame 120 and the axial flow fan 140 are snapped.

[0050] In one embodiment, in combination Figure 8 The heating element 130 is provided with a first terminal 132, and the control unit 150 is provided with a second terminal (not shown). The first terminal 132 is connected to the second terminal, so that the heating element 130 is electrically connected to the control unit 150 and supplies power to the heating element 130.

[0051] Combination Figure 7 The mounting frame 120 is provided with a mounting plate 125, and the mounting plate 125 is one of the side walls of the air duct 121. The mounting plate 125 is provided with a connecting groove 1251, and the first terminal 132 is inserted into the connecting groove 1251, and the second terminal is also inserted into the connecting groove 1251, so as to fix the first terminal 132 and the second terminal to prevent the first terminal 132 and the second terminal from shaking randomly in the heater 100.

[0052] Combination Figure 8 , a wiring board 131 is provided on the heating element 130, and the first terminal 132 is provided on the wiring board 131. The wiring board 131 is provided close to the mounting plate 125, and the wiring board 131 is also provided at a distance from the mounting plate 125, so that the first terminal 132 provided on the wiring board 131 is inserted into the connecting groove 1251 on the mounting plate 125. In this embodiment, the mounting plate 125 is provided on the top of the mounting frame 120, and the wiring board 131 is also provided on the top of the heating element 130, so that the first terminal 132 is inserted into the connecting groove 1251. In one embodiment, a plurality of first terminals 132 are provided on the wiring board 131, and a plurality of connecting grooves 1251 are provided on the mounting plate 125, and the plurality of first terminals 132 are respectively inserted into the plurality of connecting grooves 1251.

[0053] In one embodiment, in combination Figure 4The heater 100 is also provided with a temperature limiter 160, and the control unit 150 is electrically connected to the temperature limiter 160. A mounting groove 126 is provided on the side wall of the mounting frame 120, and the mounting groove 126 is provided with an opening toward the air duct 121 and an opening toward the housing 110, and the temperature limiter 160 is arranged in the mounting groove 126. The temperature limiter 160 is used to detect the temperature in the air duct 121. When it is detected that the temperature in the air duct 121 is too high, the control unit 150 controls the heating element 130 to cool down to prevent the axial flow fan 140 or the mounting frame 120 from being heated and melted by the heat dissipated by the heat, thereby protecting the heater 100 and eliminating safety hazards, such as user burns and fire.

[0054] Combination Fig. 9 and Fig.10 A limiting structure 112 is provided in the housing 110 , and the limiting structure 112 protrudes toward the mounting groove 126 . The limiting structure 112 abuts against the temperature limiter 160 in the mounting groove 126 , so that the temperature limiter 160 can be stably set in the mounting groove 126 .

[0055] In a further embodiment, a limiting groove 1121 is provided on the limiting structure 112, and the limiting groove 1121 is plugged into the base plate 161 of the temperature limiter 160, so that the limiting structure 112 and the temperature limiter 160 are stably connected, so that the limiting structure 112 can stably abut the temperature limiter 160, thereby maintaining the structural stability of the heater 100.

[0056] In one embodiment, in combination Figure 4 and Figure 5 , the control unit 150 is integrated on the circuit board 151, and the second terminal is led out from the circuit board 151. A heat insulation board 127 is also provided on the top of the mounting frame 120, and the heat insulation board 127 has a heat insulation function. The circuit board 151 is arranged on the heat insulation board 127, so that the circuit board 151 and the heating element 130 are separated by the heat insulation board 127, so as to prevent the heat emitted by the heating element 130 in the air duct 121 from melting the electrical components on the circuit board 151, thereby protecting the circuit board 151. In this embodiment, the heat insulation board 127 is arranged in parallel with the mounting plate 125.

[0057] In a further embodiment, in combination Figure 2 , Figure 4 and Figure 5The heater 100 further includes a control panel 170, which is electrically connected to the circuit board 151 and disposed on the circuit board 151. The control panel 170 is provided with a control button 171 and / or an indication component, the control button 171 is used to receive a force to control the operation of the heater 100, and the indication component includes an indicator light 172 or a display screen to indicate the working state of the heater 100 through the indicator light 172 or the display screen. The housing 110 is provided with mounting holes or mounting grooves corresponding to the control button 171 and the indication component.

[0058] In one embodiment, in combination Figure 4 and Figure 6 The mounting frame 120 is also provided with a plurality of wiring grooves 128, through which the cables of the heater 100 can be arranged and fixed, so as to facilitate the internal wiring of the heater 100 and optimize the internal layout of the heater 100. In this embodiment, the wiring grooves 128 are arranged close to the mounting grooves 126.

[0059] In one embodiment, the housing 110 is respectively connected to the mounting frame 120 and / or the axial flow fan 140 by bolts to achieve threaded fixing. Alternatively, the housing 110 is respectively connected to the mounting frame 120 and / or the axial flow fan 140 by snap-fitting.

[0060] In one embodiment, the mounting frame 120 is an integrally formed structure, and the mounting frame 120 is made of metal material or high temperature resistant plastic or ceramic material.

[0061] To sum up, the diameter of the air inlet section of the air duct of the heater of the present invention is gradually reduced along the exhaust direction, so that the air inlet section can play a role in guiding the air, so as to guide the air for the axial flow fan, optimize the airflow path, improve the heat transfer efficiency, and enable the heater to increase the indoor temperature more quickly.

[0062] The above description is only a preferred embodiment of the utility model and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the utility model is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the above utility model. For example, the above features are replaced with the technical features of the utility model (but not limited to) with similar functions in the utility model of the utility model to form a technical solution.

[0063] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

Claims

1. A heater, characterized in that: The invention comprises a shell and a mounting frame arranged in the shell, a heating element, an axial flow fan and a control unit, wherein the control unit is electrically connected to the heating element and the axial flow fan respectively, an air duct is arranged in the mounting frame, an air outlet is arranged in the shell corresponding to the air duct, the axial flow fan is arranged to exhaust air into the air duct, the heating element is arranged in the air duct, and the air duct comprises an air inlet section facing the axial flow fan, and the diameter of the air inlet section is gradually reduced along the exhaust direction of the air duct.

2. The heater according to claim 1, characterized in that The air duct also includes an air outlet section facing the air outlet, the air outlet section is connected to the air inlet section, and the diameter of the air outlet section gradually decreases or remains unchanged along the exhaust direction.

3. The heater according to claim 1, characterized in that: The air inlet section is provided with a plurality of inner walls, and the inner walls are arranged obliquely relative to the extension axis of the air inlet section.

4. The heater according to claim 1, characterized in that: The mounting frame is an integrally formed structure.

5. The heater according to claim 1, characterized in that: The heating element is provided with a first terminal, the control unit is provided with a second terminal, the mounting frame is provided with a mounting plate, the mounting plate constitutes one of the side walls of the air duct, the mounting plate is provided with a connecting groove, and the first terminal and the second terminal are connected in the connecting groove.

6. The heater according to claim 1, characterized in that: The heater also includes a temperature limiter, the control unit is electrically connected to the temperature limiter, a mounting groove is opened on the side wall of the mounting frame, the temperature limiter is arranged in the mounting groove, a limiting structure is protruded in the outer shell, the limiting structure is arranged toward the temperature limiter, and the limiting structure abuts against the temperature limiter.

7. The heater according to claim 6, characterized in that: The limiting structure is provided with a limiting groove, and the limiting groove is plugged into the base plate of the temperature limiter.

8. The heater according to claim 1, characterized in that: The control unit is integrated on a circuit board, a heat insulation board is provided on the top of the mounting frame, and the circuit board is arranged on the heat insulation board.

9. The heater according to claim 1, characterized in that: The mounting frame is also provided with a plurality of wiring grooves.

10. The heater according to claim 1, characterized in that: The mounting frame is provided with a connecting structure, the axial flow fan is provided with a matching structure, and the connecting structure is fixedly connected to the matching structure.

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