Electric warmer

Abstract

The electric warmer comprises a rear shell, a temperature sensor and a temperature sensing cover, the rear shell is provided with an inner side face and an outer side face which are oppositely arranged, and a sinking groove which is sunken from the outer side face to the inner side face is formed in the rear shell; the temperature sensor is used for detecting the environment temperature and can be contained in the sinking groove. The temperature sensing cover can cover the sinking groove from one side of the outer side face and is matched with the rear shell to limit the temperature sensor in the sinking groove. An airflow through hole communicated with the sinking groove is formed in the temperature sensing cover in a penetrating mode. The sinking groove is formed in the rear shell, the temperature sensor is contained in the sinking groove, after the temperature sensing cover covers the sinking groove, the temperature sensor can be stably limited in the sinking groove, the temperature sensor can directly and stably detect the temperature of environment gas entering the sinking groove through the gas flow through hole, and the temperature sensor can directly and stably detect the temperature of the environment gas entering the sinking groove through the gas flow through hole under the partition wall defining the side wall of the sinking groove. And the temperature sensor can be prevented from being influenced by air accumulated heat in the internal space of the electric warmer, so that the detection accuracy of the environment temperature can be improved.

Description

Technical Field

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

[0002] At present, electric heaters are widely used for heating in daily life. They are usually equipped with temperature sensors to detect the ambient temperature and automatically adjust the heating power according to the ambient temperature. For the installation of temperature sensors, the temperature sensors are usually installed inside the electric heater to make the electric heater have a better appearance structure. However, when the ventilation performance of the air duct of the electric heater is poor, it is easy to cause heat accumulation in the air in the internal space, which causes the temperature judgment value of the temperature sensor to be too high and the detection accuracy is affected. Utility Model Content

[0003] Based on this, it is necessary to provide an electric heater that can detect ambient temperature more accurately.

[0004] An electric heater, comprising:

[0005] A rear shell, the rear shell having an inner side surface and an outer side surface arranged opposite to each other, and a recessed groove recessed from the outer side surface to the inner side surface;

[0006] A temperature sensor, used to detect the ambient temperature and capable of being accommodated in the sink; and

[0007] A temperature sensing cover can cover the sink from one side of the outer side and cooperate with the rear shell to confine the temperature sensor to the sink; the temperature sensing cover is provided with an air flow hole connected with the sink.

[0008] In one embodiment, a first limiting rib is provided in the sink, and a second limiting rib is provided in the temperature sensing cover, and the first limiting rib cooperates with the second limiting rib to clamp the temperature sensor.

[0009] In one embodiment, the first limiting rib is provided with a limiting groove, and at least a portion of the temperature sensor can be accommodated in the limiting groove.

[0010] In one embodiment, the temperature sensor includes a probe and an electrical connection line connected to the probe; the side wall surrounding the sink is provided with a through hole connected to the space on one side of the inner side surface; the electrical connection line passes through the through hole, and the end away from the probe is used to connect to a circuit board located on one side of the inner side surface.

[0011] In one of the embodiments, the temperature sensing cover is detachably connected to the rear shell.

[0012] In one of the embodiments, the temperature sensing cover includes a cover body and a buckle connected to the cover body, and the buckle is snap-connected to the rear shell.

[0013] In one of the embodiments, the rear shell has an air inlet grille, and in the vertical direction has a top located above the air inlet grille and a bottom located below the air inlet grille, and the sink is arranged at the bottom.

[0014] In one embodiment, part of the temperature sensing cover protrudes from the outer side surface and presents a conical structure with multiple inclined surfaces.

[0015] In one embodiment, the temperature sensing cover includes a top surface connecting multiple inclined surfaces; the multiple inclined surfaces include a first inclined surface and a second inclined surface arranged opposite to each other along the vertical direction, and the air flow hole extends from a position of the first inclined surface close to the outer surface to the top surface, and further extends to a position of the second inclined surface close to the outer surface.

[0016] In one embodiment, there are a plurality of air flow holes, and the plurality of air flow holes are spaced apart and distributed along the length direction of the temperature sensor.

[0017] In the above electric heater, a sink is provided on the rear shell, and the temperature sensor is placed in the sink. After the sink is covered with a temperature sensing cover, the temperature sensor can be stably confined in the sink. In this way, the temperature sensor can directly and stably detect the temperature of the ambient gas entering the sink through the air flow hole. Under the partition of the side wall surrounding the sink, the temperature sensor can be protected from the influence of the accumulated heat of the air in the internal space of the electric heater, thereby improving the detection accuracy of the ambient temperature. In addition, the setting of the temperature sensing cover can cover the temperature sensor, thereby ensuring that the appearance of the electric heater is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram and a partial enlarged schematic diagram of the electric heater in the embodiment of the present application after the temperature sensing cover is connected to the rear shell;

[0020] Figure 2 for Figure 1 The schematic diagram and partial enlarged schematic diagram of the installation of the temperature sensor on the rear shell after the temperature sensing cover is removed from the electric heater shown in the figure;

[0021] Figure 3 for Figure 1 A structural schematic diagram and a partial enlarged schematic diagram of one side of the inner side of the rear shell of the electric heater shown;

[0022] Figure 4 for Figure 1 The schematic diagram of the structure of the temperature sensing cover in the electric heater shown;

[0023] Description of reference numerals:

[0024] 10. Electric heater; 100. Back shell; 110. Inner side; 120. Outer side; 130. Sink; 131. First side wall; 132. Second side wall; 133. Through hole; 134. Through hole; 140. First limiting rib; 141. Limiting groove; 150. Air inlet grille; 160. Top; 170. Bottom; 200. Temperature sensor; 210. Probe; 220. Electrical connection line; 300. Temperature sensing cover; 310. Air flow hole; 320. Second limiting rib; 321. Avoiding groove; 330. Cover body; 331. Inclined surface; 332. First inclined surface; 333. Second inclined surface; 334. Top surface; 340. Buckle. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0031] Combination Figures 1 to 4As shown, the present application protects an electric heater 10, which includes a rear shell 100, a temperature sensor 200 and a temperature sensing cover 300. The rear shell 100 has an inner side surface 110 and an outer side surface 120 that are arranged opposite to each other, and is provided with a sink 130 that is recessed from the outer side surface 120 to the inner side surface 110. The temperature sensor 200 is accommodated in the sink 130 and is used to detect the ambient temperature. The temperature sensing cover 300 can cover the sink 130 from one side of the outer side surface 120, and cooperate with the rear shell 100 to confine the temperature sensor 200 to the sink 130. The temperature sensing cover 300 is provided with an air flow hole 310 that is connected to the sink 130.

[0032] It can be understood that the electric heater 10 also includes a front shell (not shown), which is connected to the rear shell 100 to jointly constitute the outer shell structure of the electric heater 10, and the electronic components (such as circuit boards) required for the normal operation of the electric heater 10 are located in the internal space surrounded by the front shell and the rear shell 100, so that the surface of the rear shell 100 serving as the appearance surface is the outer side surface 120, and the surface of the rear shell 100 facing the interior of the electric heater 10 is the inner side surface 110.

[0033] In the present application, the sink 130 is recessed from the outer side 120 to the inner side 110, the opening of the sink 130 is located at the outer side 120, and the sink 130 extends toward the inner side 110, and the depth is greater than the thickness of the rear shell 100, so that the side wall surrounding the sink 130 protrudes from the inner side 110. In other embodiments, when the thickness of the rear shell 100 is large, the sink 130 may not extend to the inner side 110 and the depth may be less than the thickness of the rear shell 100.

[0034] In the present application, by setting a sink 130 on the rear shell 100 and accommodating the temperature sensor 200 in the sink 130, after the temperature sensing cover 300 covers the sink 130, the temperature sensor 200 can be stably confined in the sink 130, so that the temperature sensor 200 can directly and stably detect the temperature of the ambient gas entering the sink 130 through the air flow hole 310, and under the partition of the side wall surrounding the sink 130, the temperature sensor 200 can be protected from the influence of the air heat accumulation in the internal space of the electric heater 10, thereby improving the detection accuracy of the ambient temperature. In addition, the setting of the temperature sensing cover 300 can cover the temperature sensor 200, thereby ensuring that the appearance of the electric heater 10 is not affected.

[0035] Combination Figure 2 and Figure 4As shown, specifically in the present application, a first limiting rib 140 is provided in the sink 130, and a second limiting rib 320 is provided in the temperature sensing cover 300, and the first limiting rib 140 and the second limiting rib 320 cooperate to clamp the temperature sensor 200. Through the cooperation of the first limiting rib 140 and the second rib, the temperature sensor 200 can be stably clamped to prevent the temperature sensor 200 from moving in the sink 130. Specifically, the first limiting rib 140 is provided on the side wall that surrounds the sink 130 and is opposite to the opening, and is an integral structure with the side wall that surrounds the sink 130 and other structural parts of the rear shell 100, while the second limiting rib 320 and other structural parts of the temperature sensing cover 300 (such as the cover body 330 of the temperature sensing cover 300) are an integral structure. Compared with the assembly connection method, the setting of the integral structure can reduce the complexity of the structure and reduce the difficulty of assembly.

[0036] Furthermore, the first limiting rib 140 is provided with a limiting groove 141, and at least part of the temperature sensor 200 can be accommodated in the limiting groove 141. It can be understood that by accommodating part or all of the temperature sensor 200 in the limiting groove 141, the temperature sensor 200 is pre-positioned for installation, and after the temperature sensing cover 300 is covered with the sink 130, the first limiting rib 140 can cooperate with the second limiting rib to clamp the temperature sensor 200, so that the first limiting rib 140 can be fully utilized.

[0037] Specifically, in the present application, there are a plurality of first limiting ribs 140, and the plurality of first limiting ribs 140 are spaced apart along the length direction of the temperature sensor 200, so that after the temperature sensor 200 is placed in the limiting grooves 141 of the plurality of first limiting ribs 140, the plurality of first limiting ribs 140 cooperate together in the length direction of the temperature sensor 200 to pre-position the temperature sensor 200. There are a plurality of second limiting ribs 320, and the plurality of second limiting ribs 320 are spaced apart along the length direction of the temperature sensor 200, and the plurality of second limiting ribs 320 and the plurality of first limiting ribs 140 may correspond one to one, or may be staggered in the length direction of the temperature sensor 200, so that the plurality of second limiting ribs 320 cooperate with the plurality of first limiting ribs 140 to stably limit the temperature sensor 200 in the limiting groove 141, and prevent the temperature sensor 200 from coming out of the limiting groove 141 under the stress or impact of the collision.

[0038] Specifically, in the direction from the outer side 120 to the inner side 110, the limiting groove 141 is in a gradually shrinking cone shape, so as to facilitate the smooth introduction of the temperature sensor 200. The second limiting rib 320 is provided with an avoidance groove 321 to avoid the temperature sensor 200. In other embodiments, the avoidance groove 321 can also be omitted.

[0039] Combination Figure 2and Figure 3 As shown, specifically in the present application, the temperature sensor 200 includes a probe 210 and an electrical connection line 220 connected to the probe 210. The side wall surrounding the sink 130 is provided with a through hole 133 communicating with the space on one side of the inner side 110. The electrical connection line 220 passes through the through hole 133, and one end away from the probe 210 is used to connect to a circuit board located on one side of the inner side 110. It can be understood that the electrical connection line 220 is connected between the circuit board and the probe 210, so that the data information detected by the probe 210 can be transmitted to the circuit board (not shown), and the circuit board has a control circuit required for the normal operation of the electric heater 10.

[0040] Specifically, the side walls surrounding the sink 130 include a first side wall 131 opposite to the opening of the sink 130 and a second side wall 132 extending along the thickness direction of the rear housing 100. The through holes 133 may be all opened in the first side wall 131, or all opened in the second side wall 132, or may be partially opened in the first side wall 131 and partially opened in the second side wall 132. Specifically, the first limiting rib 140 is connected to the first side wall 131.

[0041] Specifically in the present application, the temperature sensing cover 300 is detachably connected to the rear shell 100, and such a configuration can facilitate the installation of the temperature sensor 200 and subsequent replacement and maintenance.

[0042] Combination Figure 1 , Figure 3 and Figure 4 As shown, specifically, the temperature sensing cover 300 includes a cover body 330 and a buckle 340 connected to the cover body 330, and the buckle 340 is snapped with the rear shell 100. By snapping the buckle 340 with the rear shell 100, the temperature sensing cover 300 and the rear shell 100 can be quickly assembled. Furthermore, there are two buckles 340, and the two buckles 340 are arranged opposite to each other to realize the connection between the temperature sensing cover 300 and the rear shell 100 from two opposite positions, thereby improving the connection stability between the temperature sensing cover 300 and the rear shell 100. Specifically, the second limiting rib 320 is connected to the side of the cover body 330 facing the temperature sensor 200.

[0043] Furthermore, considering that the temperature sensor 200 has a larger size in the length direction, the sink 130 is a rectangular structure with a larger size in the length direction of the temperature sensor 200, and the partial cover body 330 of the temperature sensing cover 300 is a rectangular structure matching the shape of the sink 130. In order to improve the connection stability between the temperature sensing cover 300 and the rear shell 100, two clips 340 are arranged opposite to each other in the length direction of the temperature sensor 200, so that after being connected to the rear shell 100, the two clips 340 are respectively located on both sides of the length direction of the temperature sensor 200.

[0044] Specifically in the present application, a through hole 134 is provided through the first side wall 131, and the buckle 340 can extend into the through hole 134 through the sink 130 and engage with the side wall surrounding the sink 130. Specifically, the through hole 134 is located at the edge of the first side wall 131, so that the buckle 340 engages with the second side wall 132 after extending into the through hole 134.

[0045] Specifically in the present application, the rear housing 100 has an air inlet grille 150, and in the vertical direction has a top 160 located above the air inlet grille 150 and a bottom 170 located below the air inlet grille 150, and the sink 130 is disposed at the bottom 170. By disposing the sink 130 at the bottom 170 of the rear housing 100, the temperature sensor 200 located in the sink 130 can be placed in a relatively stable environment, so as to reduce the influence of the surrounding hot air reflux on the temperature sensor 200, thereby improving the accuracy of the ambient temperature detection of the temperature sensor 200.

[0046] Combination Figure 1 and Figure 4 As shown, specifically, part of the temperature sensing cover 300 protrudes from the outer side surface 120 and is in a conical structure with multiple inclined surfaces 331. By providing multiple inclined surfaces 331 on the temperature sensing cover 300, it can help the temperature sensing cover 300 to be more firmly connected to the rear shell 100, and avoid the stress or impact of the collision that causes it to separate from the rear shell 100. Specifically, the multiple inclined surfaces 331 are all located on the cover body 330.

[0047] Specifically, the temperature sensing cover 300 includes a top surface 334 connecting a plurality of inclined surfaces 331, wherein the plurality of inclined surfaces 331 include a first inclined surface 332 and a second inclined surface 333 that are arranged opposite to each other in the vertical direction, and the air flow hole 310 extends from a position of the first inclined surface 332 close to the outer side surface 120 to the top surface 334, and further extends to a position of the second inclined surface 333 close to the outer side surface 120. With such a configuration, the airflow on both sides of the first inclined surface 332 and the second inclined surface 333 can smoothly interact through the air flow hole 310 and enter the sink 130, thereby improving the detection accuracy of the temperature sensor 200 and avoiding the poor airflow from affecting the detection result.

[0048] In the present application, there are multiple air flow holes 310, and the multiple air flow holes 310 are spaced apart along the length direction of the temperature sensor 200. The provision of multiple air flow holes 310 can help the external environment gas to smoothly enter the air flow holes 310 and then be detected by the temperature sensor 200, and the temperature sensor 200 has air flow holes 310 corresponding to multiple positions in the length direction, so that the entire temperature sensor 200 is in a relatively consistent airflow environment, thereby further improving the detection accuracy.

[0049] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An electric heater, characterized in that: include: A rear shell, the rear shell having an inner side surface and an outer side surface arranged opposite to each other, and a recessed groove recessed from the outer side surface to the inner side surface; A temperature sensor, used to detect the ambient temperature and capable of being accommodated in the sink; and A temperature sensing cover can cover the sink from one side of the outer side and cooperate with the rear shell to confine the temperature sensor to the sink; the temperature sensing cover is provided with an air flow hole connected with the sink.

2. The electric heater according to claim 1, characterized in that: A first limiting rib is arranged in the sink, and a second limiting rib is arranged in the temperature sensing cover. The first limiting rib cooperates with the second limiting rib to clamp the temperature sensor.

3. The electric heater according to claim 2, characterized in that: The first limiting rib is provided with a limiting groove, and at least a part of the temperature sensor can be accommodated in the limiting groove.

4. The electric heater according to claim 1, characterized in that: The temperature sensor includes a probe and an electrical connection line connected to the probe; the side wall surrounding the sink is provided with a through hole connected to the space on one side of the inner side surface; the electrical connection line passes through the through hole, and the end away from the probe is used to connect to a circuit board located on one side of the inner side surface.

5. The electric heater according to claim 1, characterized in that: The temperature sensing cover is detachably connected to the rear shell.

6. The electric heater according to claim 4, characterized in that: The temperature sensing cover comprises a cover body and a buckle connected to the cover body, and the buckle is buckled with the rear shell.

7. The electric heater according to claim 1, characterized in that: The rear shell has an air inlet grille, and in the vertical direction has a top portion located above the air inlet grille and a bottom portion located below the air inlet grille, and the sink is arranged at the bottom portion.

8. The electric heater according to claim 7, characterized in that: Part of the temperature sensing cover protrudes from the outer side surface and presents a cone-shaped structure with multiple inclined surfaces.

9. The electric heater according to claim 8, characterized in that: The temperature sensing cover includes a top surface connecting multiple inclined surfaces; the multiple inclined surfaces include a first inclined surface and a second inclined surface arranged opposite to each other along the vertical direction, and the air flow hole extends from a position of the first inclined surface close to the outer surface to the top surface, and further extends to a position of the second inclined surface close to the outer surface.

10. The electric heater according to claim 1, characterized in that: There are a plurality of air flow holes, and the plurality of air flow holes are distributed at intervals along the length direction of the temperature sensor.

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