Indoor warmer

Abstract

The utility model relates to the technical field of heating equipment, in particular to an indoor heater. An indoor warmer comprises an outer shell, an inner framework, a circuit board mounting framework and a high-temperature-resistant electric heating film. The inner framework and the circuit board mounting framework are detachably connected to form a matrix framework; the outer shell is detachably connected to the outer part of the matrix framework; a circuit board is detachably connected in the circuit board mounting framework, and the circuit board is connected with a power supply connecting assembly; the power supply connecting assembly is connected to the circuit board mounting framework; the high-temperature-resistant electric heating film is detachably connected to the interior of the inner framework; and the inner framework is connected with a separator. The heating device has good heating and warming effects and is light in overall mass.

Description

Technical Field

[0001] The present application relates to the technical field of heating equipment, and in particular to an indoor heater. Background Art

[0002] Heating equipment is more than necessary in the cold winter, especially in cold areas at high latitudes. Heating equipment is particularly important. It not only keeps you warm, but also determines the comfort of the environment created.

[0003] The heating element in existing indoor heaters typically uses a heating wire as a heat source. Its operating principle is that current passes through the wire, converting electrical energy into heat, which in turn raises the indoor temperature through heat exchange. While these heaters offer advantages in terms of mature technology and affordability, they also have several drawbacks: 1. Thermal radiation can affect skin moisture balance, irritating the skin and potentially causing skin allergies; 2. They generate harmful electromagnetic radiation, potentially impacting the human endocrine system; 3. They place relatively high demands on the heat dissipation structure and components, and the high density and weight of the heating wire result in a relatively large overall size, making them difficult to transport.

[0004] To address the aforementioned issues with indoor heaters that use heating wires as their heat source, a new type of oil-filled electric heater has been developed. This type of heater is filled with a new type of thermal oil. When powered on, the oil surrounding the heating tubes heats up and flows along the heat pipes to the fin assembly, where it dissipates the heat. While this reduces the hazards of thermal and electromagnetic radiation, it also presents new challenges: slow heat dissipation and high power consumption. Furthermore, oil-filled heaters are relatively bulky, making them heavy and difficult to transport.

[0005] In summary, the indoor heaters in the prior art all have the problem of overall heavy quality. Utility Model Content

[0006] In order to solve the technical difficulties existing in the above-mentioned prior art, the present application provides an indoor heater.

[0007] The indoor heater provided in this application is realized by the following technical solutions:

[0008] An indoor heater includes an outer shell, an inner frame, a circuit board mounting frame, and a high-temperature resistant electric heating film, wherein the inner frame and the circuit board mounting frame are detachably connected to form a base frame; the outer shell is detachably connected to the outside of the base frame; a circuit board is detachably connected to the inside of the circuit board mounting frame, and the circuit board is connected to a power connection assembly; the power connection assembly is connected to the circuit board mounting frame; the high-temperature resistant electric heating film is detachably connected to the inside of the inner frame; the inner frame is connected to a separator for separating the high-temperature resistant electric heating films.

[0009] Preferably, the high-temperature resistant electric heating film includes an aramid electric heating film, a conductive electrode, and an insulating high-temperature resistant insulating film. The insulating high-temperature resistant insulating film is fixedly connected to the aramid electric heating film; the conductive electrode is fixedly connected to the surface of the aramid electric heating film facing away from the insulating high-temperature resistant insulating film.

[0010] This application uses a high-temperature resistant electric heating film as the core heating component. Different models, i.e., models with different steady-state heating temperatures, can be selected based on the application scenario to meet the diverse needs of multiple scenarios. The high-temperature resistant electric heating film has a fast heating rate, giving the indoor heater a good heating effect. Furthermore, the high-temperature resistant electric heating film is lightweight, effectively reducing the overall weight, making it easy to carry and more flexible to use.

[0011] The high-temperature resistant electric heating film used in this application is a new type of energy-saving household appliance spare part developed by the applicant. The application number is 2024102260153. The invention name is a high-temperature resistant electric heating film and its preparation method. The formula of the high-temperature resistant electric heating film and its preparation method are disclosed. The high-temperature resistant electric heating film in this application uses the high-temperature resistant electric heating film prepared in the specific embodiment of the invention patent "A high-temperature resistant electric heating film and its preparation method". It can be diversifiedly used in the field of household appliances to achieve the purpose of energy conservation and emission reduction.

[0012] Preferably, the design heating temperature of the high temperature resistant electric heating film is 120-280°C, the temperature uniformity ΔT of the electric heating film is 0.6-1.32, the maximum instantaneous heating rate is 1.15-3.41°C / s, and the surface resistance is 67.8-6.21*10 4 Ω / sq.

[0013] By adopting the above technical solution, the overall heating uniformity and rapid heating effect can be guaranteed. At the same time, the high stable temperature releases more infrared rays and far infrared rays to improve the overall heating effect.

[0014] Preferably, the outer shell includes a bottom plate and a U-shaped frame, and the U-shaped frame is sleeved on the base frame; the bottom plate is connected to the bottom of the circuit board mounting frame, and the bottom plate can also be detachably connected to the U-shaped frame to form the outer shell.

[0015] By adopting the above technical solution, the outer shell is easy to assemble, disassemble and maintain.

[0016] Preferably, the circuit board mounting frame is detachably connected to a T-shaped support seat; the connecting end of the T-shaped support seat passes through a bottom plate and is detachably connected to the circuit board mounting frame.

[0017] By adopting the above technical solution, the T-shaped support base is easy to assemble, disassemble and maintain, and the T-shaped support base can provide good vertical support stability for the indoor heater.

[0018] Preferably, the inner skeleton includes a top inner skeleton and a bottom inner skeleton, and the top inner skeleton and the bottom inner skeleton are both connected to the circuit board mounting skeleton; the top inner skeleton and the bottom inner skeleton are detachably connected through a plurality of fittings to form an inner skeleton; the separator is connected to the top inner skeleton; the high-temperature resistant electric heating film is detachably connected to the fittings, and the high-temperature resistant electric heating film is located between the top inner skeleton and the bottom inner skeleton.

[0019] By adopting the above technical solution, it is convenient to assemble, disassemble and maintain the inner frame, and it is also convenient for the high-temperature resistant electric heating film to be detachably connected to the inner frame, which facilitates the assembly, disassembly and maintenance of the high-temperature resistant electric heating film.

[0020] Preferably, the matching part includes an aluminum alloy frame, a first connecting piece is fixedly connected to the top of the aluminum alloy frame, and the first connecting piece is detachably connected to the top inner frame; a second connecting piece is fixedly connected to the bottom of the aluminum alloy frame, and the second connecting piece is detachably connected to the bottom inner frame; a reinforcing rib is fixedly connected to the inside of the aluminum alloy frame; an electric heating film connecting piece is fixedly connected to the outer side of the aluminum alloy frame, and the electric heating film connecting piece is detachably connected to the high-temperature resistant electric heating film.

[0021] By adopting the above technical solution, the fittings can detachably connect the top inner frame and the bottom inner frame to form an inner frame, which is convenient for assembling, disassembling and maintaining the inner frame.

[0022] Preferably, the vertical projections of the aramid electric heating film and the thermal insulation type high temperature resistant insulating film are similar rectangles, and the vertical projection size of the thermal insulation type high temperature resistant insulating film is larger than the vertical projection size of the aramid electric heating film; the electric heating film connecting piece includes a connecting straight piece and a U-shaped clip, the connecting straight piece is vertically fixedly connected to the outer side surface of the aluminum alloy frame, and the connecting straight piece is parallel to the horizontal plane; the bottom of the U-shaped clip is fixedly connected to the end of the connecting straight piece facing away from the outer side surface of the aluminum alloy frame, and the high temperature resistant electric heating film is located in the U-shaped space formed by the U-shaped clip; the U-shaped clip is detachably connected to a fastening bolt, and one end of the fastening bolt abuts against the surface of the thermal insulation type high temperature resistant insulating film, so that the high temperature resistant electric heating film can be detachably connected to the fitting.

[0023] By adopting the above technical solution, the high-temperature resistant electric heating film can be easily assembled, disassembled and maintained.

[0024] The vertical projection size of the heat-insulating high-temperature resistant insulating film is larger than that of the aramid electric heating film. The purpose is that the heat-insulating high-temperature resistant insulating film can be detachably connected to the connecting part without affecting the structural integrity of the aramid electric heating film, thereby ensuring the heating efficiency and service life of the aramid electric heating film.

[0025] Preferably, a U-shaped elastic gasket is fixedly connected inside the U-shaped clip; the U-shaped elastic gasket is located in the U-shaped space formed by the U-shaped clip; the U-shaped elastic gasket is wrapped around the outer edge of the heat-insulating and high-temperature resistant insulation film; the bottom end of the fastening bolt abuts against the upper surface of the U-shaped elastic gasket, and the lower surface of the U-shaped elastic gasket is in contact with the upper surface of the heat-insulating and high-temperature resistant insulation film.

[0026] By adopting the above technical solution, it is helpful to eliminate the internal stress influence of the high-temperature resistant electric heating film, improve the clamping stability performance of the high-temperature resistant electric heating film, and help to increase the overall service life.

[0027] In summary, this application has the following advantages:

[0028] 1. The indoor heater in this application has a good heating effect and is relatively light in overall weight.

[0029] 2. The indoor heater in this application can reduce the harmful effects of thermal radiation and electromagnetic radiation.

[0030] 3. The indoor heater in this application can release infrared rays and far infrared rays, which can improve the overall heating comfort while promoting the user's blood microcirculation and relieving fatigue and physical and mental stress.

[0031] 4. This application uses a self-made high-temperature resistant electric heating film, which is a new type of energy-saving household appliance spare part and can be diversifiedly used in the field of household appliances, achieving the purpose of energy conservation and emission reduction and promoting the development of environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the indoor heater in this application.

[0033] Figure 2 It is a schematic diagram of the connection structure between the inner frame and the circuit board mounting frame in the indoor heater of the present application.

[0034] Figure 3 It is a structural schematic diagram of the high-temperature resistant electric heating film in the indoor heater of this application.

[0035] Figure 4 This is a schematic diagram of the splicing structure of the top inner frame of the indoor heater of this application.

[0036] Figure 5 yes Figure 2 A partial enlarged view of point A in the middle.

[0037] In the figure, 1. outer shell; 10. base frame; 11. bottom plate; 12. U-shaped frame; 2. inner frame; 21. top inner frame; 22. bottom inner frame; 23. fittings; 231. aluminum alloy frame; 232. first connecting piece; 233. second connecting piece; 234. reinforcing rib; 235. electric heating film connecting piece; 2351. connecting straight piece; 2352. U-shaped clip; 2353. fastening bolt; 2354. U-shaped elastic gasket; 3. circuit board mounting frame; 30. T-shaped support seat; 4. high temperature resistant electric heating film; 41. aramid electric heating film; 42. conductive electrode; 43. heat-insulating high temperature resistant insulating film; 430. metal heat radiation reflecting coating; 5. power connection assembly; 6. separator. DETAILED DESCRIPTION

[0038] The present application is further described in detail below with reference to the accompanying drawings and examples. Example

[0039] Reference Figure 1 and Figure 2 An indoor heater includes an outer shell 1, an inner frame 2, a circuit board mounting frame 3, and a high-temperature resistant electric heating film 4. The inner frame 2 and the circuit board mounting frame 3 are detachably connected by screws to form a base frame 10. The outer shell 1 is detachably connected to the outside of the base frame 10. The outer shell 1 affects the overall visual appearance of the indoor heater. A simple frame structure is preferably used. The outer shell can be designed with a signature pattern, color, pattern, or a combination of color and pattern.

[0040] Reference Figure 1 and Figure 2 The circuit board is removably screwed to the circuit board mounting frame 3. A power connection assembly 5 for connecting to a power source is soldered to the circuit board. The power connection assembly 5 is connected to the circuit board mounting frame 3, with only the plug of the power connection assembly 5 and the wires connecting the plug exposed from the outer housing 1. A high-temperature resistant electric heating film 4 is removably attached to the interior of the inner frame 2. This high-temperature resistant electric heating film 4 is connected to the circuit board within the circuit board mounting frame 3 via wires. This means that the power supply, power connection assembly 5, circuit board, and high-temperature resistant electric heating film 4 form a current loop. When energized, the high-temperature resistant electric heating film 4 generates heat, ensuring a good heating effect.

[0041] Reference Figure 1 and Figure 2 In order to facilitate the user to contact the high-temperature resistant electric heating film 4 in the inner frame 2, the inner frame 2 is connected with a separator 6, which is used to separate the high-temperature resistant electric heating film 4 to prevent the user from accidentally touching and scalding, affecting the overall safety performance.

[0042] To further optimize the design scheme, the integrated circuit board in the circuit board installation frame 3 is connected to the touch control screen to control the heating temperature and power of the high-temperature resistant electric heating film 4, enhance the human-computer exchange experience, and improve the market competitiveness of the product.

[0043] The high temperature resistant electric heating film 4 releases heat, and the inner frame 2 structure needs to have a heat dissipation structure, that is, the separator is selected from one of aramid mesh, polyimide PI mesh, and heat-resistant plastic mesh.

[0044] The design is further optimized as follows: the base frame 10 is formed with a heat dissipation outlet, and the heat dissipation outlet is located at the connection interface between the inner frame 2 and the integrated circuit board mounting frame 3.

[0045] As the core heating component, high-temperature resistant electric heating film can be selected according to the application scenario. Different models, that is, high-temperature resistant electric heating film with different steady-state heating temperatures, can meet the needs of diversified application scenarios in multiple scenarios.

[0046] Reference Figure 1 and Figure 3 The structure of the high-temperature resistant electric heating film 4 is as disclosed in the invention titled "A High-temperature Resistant Electric Heating Film and Its Preparation Method." The high-temperature resistant electric heating film 4 includes an aramid electric heating film 41, a conductive electrode 42, and a heat-insulating, high-temperature resistant insulating film 43. The heat-insulating, high-temperature resistant insulating film 43 is fixedly connected to the aramid electric heating film 41. The conductive electrode 42 is fixedly connected to the surface of the aramid electric heating film 41 facing away from the heat-insulating, high-temperature resistant insulating film 43. The film thickness of the heat-insulating, high-temperature resistant insulating film 43 is 60-150 microns, while the film thickness of the aramid electric heating film 1 is 60-100 microns. The ratio of the film thickness of the aramid electric heating film 41 to the film thickness of the heat-insulating, high-temperature resistant insulating film 43 is 1:(1.2-1.5). The surface of the heat-insulating, high-temperature resistant insulating film 43 facing away from the aramid electric heating film 41 is formed with a 50-500 nm thick metal heat radiation reflective coating 430 by physical vapor deposition. The metal heat radiation reflective coating 430 is selected from the group consisting of aluminum, copper, silver, iron, aluminum-copper alloy, and aluminum-silver alloy. Aluminum is preferred due to its economical performance. The conductive electrode 42 is a 100-200 nm thick silver electrode formed on the surface of the heat-insulating, high-temperature-resistant insulating film 3 via physical vapor deposition.

[0047] The high temperature resistant electric heating film has a fast heating rate, which gives the indoor heater a good heating effect. The high temperature resistant electric heating film is light in weight, which effectively reduces the overall weight, is light and easy to carry, and is more flexible to use.

[0048] The high-temperature-resistant electric heating film used in this application is a high-temperature-resistant electric heating film developed by the applicant. As a new energy-saving household appliance component, this high-temperature-resistant electric heating film can be widely used in the household appliance field, achieving the goal of energy conservation and emission reduction. High-temperature-resistant electric heating film is a prior art application with application number 2024102260153, entitled "A High-temperature-resistant Electric Heating Film and Its Preparation Method," which discloses the formula and preparation method of the high-temperature-resistant electric heating film.

[0049] The high-temperature resistant electric heating film in this application can be any one of the high-temperature resistant electric heating films prepared in specific embodiments 1-21 of the high-temperature resistant electric heating film and its preparation method in the invention patent publication number CN117939712A. The parameter information is derived from the following: the design steady-state heating temperature of the high-temperature resistant electric heating film is 120-280°C, the temperature uniformity of the electric heating film is ΔT is 0.6-1.32, the maximum instantaneous heating rate is 1.15-3.41°C / s, and the surface resistance is 67.8-6.21*10 4 Ω / sq.

[0050] The preferred high-temperature resistant electric heating film is as follows: the high-temperature resistant electric heating film prepared in Examples 5-6 has a higher steady-state temperature, a faster heating rate, and good temperature uniformity of the electric heating film, which gives the indoor heater good rapid heating performance and effectively reduces the overall quality of the indoor heater.

[0051] Reference Figure 1 The outer shell 1 includes a bottom plate 11 and a U-shaped frame 12. The U-shaped frame 12 is sleeved on the outside of the base frame 10 and is detachably fixed to the base frame 10 with bolts. The bottom plate 11 is detachably fixed to the bottom of the circuit board mounting frame 3 by screws. That is, the bottom plate 11 and the U-shaped frame 12 constitute the outer shell 1 outside the base frame 10.

[0052] Reference Figure 1 The circuit board mounting frame 3 is detachably connected to a T-shaped support base 30. The connection end of the T-shaped support base 30 is connected to the circuit board mounting frame 3 through the bottom plate 11, which facilitates the assembly, disassembly, and maintenance of the T-shaped support base 30. The T-shaped support base 30 can also provide good vertical support stability for the indoor heater.

[0053] Reference Figure 1 and Figure 2 The inner frame 2 includes a top inner frame 21 and a bottom inner frame 22. Both the top inner frame 21 and the bottom inner frame 22 are connected to the circuit board mounting frame 3 for fixation. The top inner frame 21 and the bottom inner frame 22 are then fixed to the circuit board mounting frame 3 using screws. The top inner frame 21 and the bottom inner frame 22 are detachably connected by a plurality of fittings 23 to form the inner frame 2.

[0054] Reference Figure 4 The top inner frame 21 is constructed from four aluminum alloy profile strips. Adjacent aluminum alloy profile strips are first snap-fitted into place and then removably secured with screws to form the aluminum alloy frame. A separator 6 is made of aramid mesh, which is fixedly attached to the outer surface of the top inner frame 21.

[0055] The bottom inner frame 22 is also constructed from four aluminum alloy strips. Adjacent aluminum alloy strips are first snap-fitted into place and then removably secured with screws to form the frame. The other divider 6 is a heat-resistant plastic mesh, preferably made of PI, which is snap-fitted to the inner wall of the bottom inner frame 22.

[0056] Reference Figure 2 The high temperature resistant electric heating film 4 is detachably connected to the fitting 23 , and the high temperature resistant electric heating film 4 is located between the top inner frame 21 and the bottom inner frame 22 .

[0057] Reference Figure 5 The connection structure between the high-temperature resistant electric heating film 4 and the inner frame 2 is as follows: the connecting component 23 includes an aluminum alloy frame 231. A first connecting piece 232 is welded or integrally extruded and fixedly connected to the top of the aluminum alloy frame 231. The first connecting piece 232 is detachably connected to the outer periphery of the top inner frame 21 via screws. A second connecting piece 233 is welded or integrally extruded and fixedly connected to the bottom of the aluminum alloy frame 231. The second connecting piece 233 is detachably connected to the bottom inner frame 22 via screws.

[0058] Reference Figure 5 The aluminum alloy frame 231 is internally welded or integrally extruded and fixedly connected with a reinforcing rib sheet 234. The outer surface of the aluminum alloy frame 231 is welded or integrally extruded and fixedly connected with an electric heating film connecting sheet 235.

[0059] Reference Figure 5 The electric heating film connecting piece 235 is detachably connected to the high-temperature resistant electric heating film 4. The specific structure is as follows: the vertical projections of the aramid electric heating film 41 and the heat-insulating high-temperature resistant insulating film 43 are similar rectangles, and the vertical projection size of the heat-insulating high-temperature resistant insulating film 43 is larger than the vertical projection size of the aramid electric heating film 41. The heat-insulating high-temperature resistant insulating film 43 can be detachably connected to the matching part 234, which does not affect the structural integrity of the aramid electric heating film 41, thereby ensuring the heating efficiency and service life of the aramid electric heating film 41.

[0060] The electric heating film connecting piece 235 is a connecting straight piece 2351, and the heat-insulating high-temperature-resistant insulating film 43 in the high-temperature-resistant electric heating film 4 is fixedly connected to the connecting straight piece 2351. The heat-insulating high-temperature-resistant insulating film 43 and the connecting straight piece 2351 are fixedly connected by glue, bolts, or external blocks.

[0061] Preferably, the design structure of the electric heating film connecting piece 235 is as follows, referring to Figure 5 The electric heating film connecting piece 235 includes a connecting straight piece 2351 and a U-shaped clip 2352. The connecting straight piece 2351 is vertically welded or integrally extruded and fixedly connected to the outer side of the aluminum alloy frame 231. The connecting straight piece 2351 is parallel to the horizontal plane. The bottom of the U-shaped clip 2352 is welded or integrally extruded and fixedly connected to the end of the connecting straight piece 2351 facing away from the outer side of the aluminum alloy frame 231. The high-temperature resistant electric heating film 4 is located in the U-shaped space formed by the U-shaped clip 2352. A fastening bolt 2353 is threadedly connected to the side of the U-shaped clip 2352. One end of the fastening bolt 2353 abuts against the surface of the heat-insulating and high-temperature resistant insulating film 43, thereby realizing the detachable connection of the high-temperature resistant electric heating film 4 to the fitting 23.

[0062] Reference Figure 5 In order to improve the installation stability of the high-temperature resistant electric heating film 4, a U-shaped elastic gasket 2354 is fixedly connected to the U-shaped clip 2352 with glue. The U-shaped elastic gasket 2354 is made of TPU material with a Shore hardness of 75-85A. The U-shaped elastic gasket 2354 is fixedly connected to the inner wall of the U-shaped clip 2352, that is, it is located in the U-shaped space formed by the U-shaped clip 2352. When the high-temperature resistant electric heating film 4 is installed, the U-shaped elastic gasket 2354 is covered on the outer edge of the heat-insulating high-temperature resistant insulating film 43. When the fastening bolt 2353 is turned to move downward, the bottom end of the fastening bolt 2353 abuts against the upper surface of the U-shaped elastic gasket 2354, and the lower surface of the U-shaped elastic gasket 2354 contacts the upper surface of the heat-insulating high-temperature resistant insulating film 43, and the installation of the high-temperature resistant electric heating film 4 is completed.

[0063] The embodiments of this specific implementation method are all preferred embodiments of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A room heater, characterized in that: The invention comprises an outer shell (1), an inner frame (2), a circuit board mounting frame (3), and a high-temperature resistant electric heating film (4), wherein the inner frame (2) and the circuit board mounting frame (3) are detachably connected to form a base frame (10); the outer shell (1) is detachably connected to the outside of the base frame (10); a circuit board is detachably connected to the inside of the circuit board mounting frame (3), and the circuit board is connected to a power connection assembly (5); the power connection assembly (5) is connected to the circuit board mounting frame (3); the high-temperature resistant electric heating film (4) is detachably connected to the inside of the inner frame (2); and the inner frame (2) is connected to a separator (6) for separating the high-temperature resistant electric heating film (4).

2. The indoor heater according to claim 1, characterized in that: The high-temperature resistant electric heating film (4) comprises an aramid electric heating film (41), a conductive electrode (42), and a heat-insulating high-temperature resistant insulating film (43). The heat-insulating high-temperature resistant insulating film (43) is fixedly connected to the aramid electric heating film (41); the conductive electrode (42) is fixedly connected to the surface of the aramid electric heating film (41) facing away from the heat-insulating high-temperature resistant insulating film (43).

3. The indoor heater according to claim 2, characterized in that: The design heating temperature of the high temperature resistant electric heating film (4) is 120-280°C, the temperature uniformity ΔT of the electric heating film is 0.6-1.32, the maximum instantaneous heating rate is 1.15-3.41°C / s, and the surface resistance is 67.8-6.21*10 4 Ω / sq.

4. The indoor heater according to claim 2, characterized in that: The outer shell (1) comprises a bottom plate (11) and a U-shaped frame (12), wherein the U-shaped frame (12) is sleeved on the base frame (10); the bottom plate (11) is connected to the bottom of the circuit board mounting frame (3), and the bottom plate (11) can also be detachably connected to the U-shaped frame (12) to form the outer shell (1).

5. The room heater according to claim 4, characterized in that: The circuit board mounting frame (3) is detachably connected to a T-shaped support seat (30); a connection end of the T-shaped support seat (30) is passed through a bottom plate (11) and is detachably connected to the circuit board mounting frame (3).

6. The room heater according to claim 5, characterized in that: The inner frame (2) includes a top inner frame (21) and a bottom inner frame (22), and the top inner frame (21) and the bottom inner frame (22) are both connected to the circuit board mounting frame (3); the top inner frame (21) and the bottom inner frame (22) are detachably connected via a plurality of fittings (23) to form the inner frame (2); the separator (6) is connected to the top inner frame (21); the high-temperature resistant electric heating film (4) is detachably connected to the fittings (23), and the high-temperature resistant electric heating film (4) is located between the top inner frame (21) and the bottom inner frame (22).

7. The room heater according to claim 6, characterized in that: The fitting (23) comprises an aluminum alloy frame (231), wherein a first connecting piece (232) is fixedly connected to the top of the aluminum alloy frame (231), and the first connecting piece (232) is detachably connected to the top inner frame (21); a second connecting piece (233) is fixedly connected to the bottom of the aluminum alloy frame (231), and the second connecting piece (233) is detachably connected to the bottom inner frame (22); a reinforcing rib (234) is fixedly connected to the inside of the aluminum alloy frame (231); and an electric heating film connecting piece (235) is fixedly connected to the outer surface of the aluminum alloy frame (231), and the electric heating film connecting piece (235) is detachably connected to the high-temperature resistant electric heating film (4).

8. The room heater according to claim 7, characterized in that: The vertical projections of the aramid electric heating film (41) and the heat-insulating high-temperature resistant insulating film (43) are similar rectangles, and the vertical projection size of the heat-insulating high-temperature resistant insulating film (43) is larger than the vertical projection size of the aramid electric heating film (41); the electric heating film connecting piece (235) includes a connecting straight piece (2351) and a U-shaped clip (2352), and the connecting straight piece (2351) is vertically fixedly connected to the outer side surface of the aluminum alloy frame (231), and the connecting straight piece (2351) is parallel to the horizontal plane; The bottom of the U-shaped clip (2352) is fixedly connected to one end of the connecting straight piece (2351) facing away from the outer side of the aluminum alloy frame (231), and the high-temperature resistant electric heating film (4) is located in the U-shaped space formed by the U-shaped clip (2352); the U-shaped clip (2352) is detachably connected to a fastening bolt (2353), and one end of the fastening bolt (2353) abuts against the surface of the heat-insulating high-temperature resistant insulating film (43), thereby realizing the detachable connection of the high-temperature resistant electric heating film (4) to the fitting (23).

9. The room heater according to claim 8, characterized in that: A U-shaped elastic gasket (2354) is fixedly connected inside the U-shaped clip (2352); the U-shaped elastic gasket (2354) is located in the U-shaped space formed by the U-shaped clip (2352); the U-shaped elastic gasket (2354) is wrapped around the outer edge of the heat-insulating and high-temperature-resistant insulating film (43); the bottom end of the fastening bolt (2353) abuts against the upper surface of the U-shaped elastic gasket (2354), and the lower surface of the U-shaped elastic gasket (2354) is in contact with the upper surface of the heat-insulating and high-temperature-resistant insulating film (43).

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