Refrigerator
By using infrared sensors in the refrigerator to thermal connection between the thermal conduction plate, the drawer temperature is sensed and the temperature is accurately controlled, which solves the problem of the temperature dropping of the existing refrigerator when the drawer is opened, and fast and accurate temperature control is achieved.
Patent Information
- Application Number
- CN202421822751.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-29
AI Technical Summary
When the drawer is opened, external heat intrusion causes the temperature in the functional area to drop sharply. The traditional resistance temperature sensor has a large temperature deviation, slow response speed, and it is difficult to accurately control the temperature.
The thermal connection between an infrared sensor and a thermal plate is adopted to sense the thermal plate temperature through an infrared sensor, which achieves rapid and accurate perception of the drawer temperature, and controls the temperature according to the feedback signal through the refrigeration component.
It realizes fast and accurate perception and temperature control of drawer temperature, ensures the stability of the refrigerator's functional area temperature, and extends the shelf life of food.
Smart Images
Figure CN222824662U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field related to temperature perception of a drawer in a refrigerator, and particularly relates to a refrigerator. Background Art
[0002] When users open the refrigerator drawer and take out food, the heat outside the refrigerator will invade the refrigerator compartment, causing the temperature of the refrigerator functional area to drop sharply. Therefore, the refrigerator needs a sensor to quickly sense the temperature of the functional area to determine whether refrigeration compensation is needed to achieve precise temperature control.
[0003] At present, existing refrigerators usually use resistive temperature sensors to sense temperature. Due to the structural characteristics of the resistive temperature sensors, the resistive temperature sensors have large temperature sensing deviations and slow response speeds when working. This can easily cause the situation where no refrigeration is requested when the temperature of the functional area is higher than the set value, which is not conducive to food storage. Utility Model Content
[0004] In view of this, it is necessary to provide a refrigerator for solving the above technical problems.
[0005] A refrigerator, comprising:
[0006] An infrared sensor is installed on the air duct assembly or the box body of the refrigerator;
[0007] The drawer comprises a drawer body and a heat conducting plate, wherein the heat conducting plate is mounted on the drawer body and thermally connected to the drawer body, and the infrared sensor is used for sensing the temperature of the heat conducting plate and generating a feedback signal.
[0008] It can be understood that by utilizing the thermal connection between the heat conducting plate and the drawer body, the infrared sensor can sense the temperature of the heat conducting plate when it is working, thereby achieving the purpose of sensing the temperature of the drawer. In this way, by utilizing the structural characteristics of the infrared sensor, the drawer temperature can be quickly and accurately sensed, and a basis can be provided for subsequent accurate and rapid temperature control of the drawer.
[0009] In one embodiment, the infrared sensor includes a filter;
[0010] Wherein, the first end surface of the heat conducting plate facing the infrared sensor is arranged parallel to the filter.
[0011] It is understandable that setting the filter on the infrared sensor parallel to the first end face of the heat conducting plate can ensure that the infrared light radiated by the heat conducting plate can enter the infrared sensor and increase the light transmittance to meet the infrared sensor's use requirements for sensing the temperature of the heat conducting plate.
[0012] In one embodiment, an extension protrusion is formed on the drawer body, and the extension protrusion extends toward the direction of the infrared sensor, and the heat conducting plate is abutted against and connected to the extension protrusion, so that the second end surface of the heat conducting plate away from the infrared sensor is flush with the inner peripheral wall of the drawer body;
[0013] Wherein, a through hole is provided on the extending protrusion, and the infrared light radiated by the heat conducting plate can enter the infrared sensor through the through hole, and enable the infrared sensor to sense the temperature of the heat conducting plate.
[0014] It can be understood that the heat conducting plate assembled to the drawer body is flush with the inner peripheral wall of the drawer body, which can ensure that the inner cavity of the drawer is beautiful and not obtrusive.
[0015] In one embodiment, the heat conducting plate is configured as a metal plate.
[0016] It is understandable that by configuring the heat conducting plate as a metal plate and utilizing the fast heat conducting property of the metal plate, the infrared sensor can quickly sense the temperature of the heat conducting plate.
[0017] In one embodiment, the infrared sensor is installed in the air duct assembly.
[0018] In one embodiment, the air duct assembly includes a front cover plate, air duct foam and a rear cover plate, the front cover plate is fixedly connected to the rear cover plate, and the air duct foam is arranged between the front cover plate and the rear cover plate;
[0019] Wherein, the infrared sensor is arranged between the front cover plate and the air duct foam.
[0020] It is understandable that the air duct foam is used to isolate the infrared sensor from the rear cover, which can prevent the low temperature on the back of the air duct assembly from interfering with the operation of the infrared sensor.
[0021] In one embodiment, a light-transmitting hole is provided on the front cover plate, and the infrared light radiated by the heat-conducting plate (22) can enter the infrared sensor (10) through the light-transmitting hole (311);
[0022] Wherein, the light-transmitting hole is circular.
[0023] It can be understood that the light-transmitting hole on the front cover plate through which the infrared light enters the infrared sensor is set to be circular, which can improve the external aesthetics of the air duct assembly.
[0024] In one of the embodiments, the minimum distance between the drawer and the front cover is set to L, where L≥7 mm.
[0025] It is understandable that the minimum distance between the drawer and the front cover is set to be above 7 mm, which can ensure that the drawer will not collide with the front cover during the pulling process.
[0026] In one embodiment, the infrared sensor includes a wiring terminal, and the wiring terminal can be plugged into an external terminal;
[0027] Wherein, a wire harness storage area is formed on the front cover plate, and the connection terminals are arranged in the wire harness storage area.
[0028] It is understandable that the wiring terminal of the infrared sensor is arranged in the wiring harness storage area of the front cover plate, which makes it easy to plug the external terminal into the wiring terminal.
[0029] In one of the embodiments, the refrigerator further comprises a refrigeration component, and the refrigeration component is capable of refrigerating the drawer according to the feedback signal.
[0030] It can be understood that the refrigeration component cools the drawer according to the feedback signal generated by the infrared sensor, thereby ensuring that the temperature of the drawer is always within a preset range.
[0031] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:
[0032] The refrigerator for which protection is requested in this application utilizes the thermal connection between the heat conducting plate and the drawer body so that the infrared sensor can sense the temperature of the heat conducting plate when it is working, thereby achieving the purpose of sensing the temperature of the drawer. In this way, the structural characteristics of the infrared sensor can be utilized to achieve rapid and accurate perception of the drawer temperature, and provide a basis for subsequent accurate and rapid temperature control of the drawer. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are 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 creative work.
[0034] Figure 1 A schematic diagram of the structure of a refrigerator provided in one embodiment of the present application.
[0035] Figure 2 A cross-sectional view of a refrigerator provided in accordance with an embodiment of the present application.
[0036] Figure 3 for Figure 2 Enlarged view of the middle P part.
[0037] Figure 4This is a schematic diagram of the structure of the drawer in this application.
[0038] Figure 5 This is an exploded view of the air duct assembly and the infrared sensor when assembled in this application.
[0039] Figure 6 This is a schematic diagram of the structure of the air duct assembly and the infrared sensor when assembled in this application.
[0040] Figure 7 This is a schematic diagram of the structure of the infrared sensor and the front cover when assembled in this application.
[0041] Figure numerals: 100, refrigerator; 10, infrared sensor; 11, filter; 20, drawer; 201, inner wall; 21, drawer body; 211, extended protrusion; 2111, through hole; 22, heat conducting plate; 221, first end face; 222, second end face; 30, air duct assembly; 31, front cover; 311, light-transmitting hole; 312, wire harness storage area; 313, wire clamping groove; 32, air duct foam; 33, rear cover. DETAILED DESCRIPTION
[0042] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0043] It should be noted that when an element is referred to as being "provided on" another element, it may be directly provided on the other element or there may be a central element. When an element is considered to be "provided on" another element, it may be directly provided on the other element or there may be a central element at the same time. When an element is considered to be "fixed to" another element, it may be directly fixed to the other element or there may be a central element at the same time.
[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0045] like Figures 1 to 3As shown, the refrigerator 100 provided in one embodiment of the present application includes an infrared sensor 10 and a drawer 20, wherein the infrared sensor 10 is installed on the air duct assembly 30 or the box of the refrigerator 100; the drawer 20 includes a drawer body 21 and a heat conducting plate 22, wherein the heat conducting plate 22 is installed on the drawer body 21 and is thermally connected to the drawer body 21, and the infrared sensor 10 is used to sense the temperature of the heat conducting plate 22 and generate a feedback signal. In other words, the refrigerator 100 utilizes the thermal connection between the heat conducting plate 22 and the drawer body 21, so that the infrared sensor 10 senses the temperature of the heat conducting plate 22, and thus senses the temperature of the drawer 20. In this process, the structural characteristics of the infrared sensor 10 are utilized to sense the temperature of the drawer 20 quickly and accurately, and provide a basis for the subsequent accurate and rapid temperature control of the drawer 20. Here, the box specifically refers to the refrigeration liner of the refrigerator. It should be noted that the other structural components in the refrigerator 100 can adopt the conventional method of the existing refrigerator. Since it is not the focus of the protection of this application, it will not be elaborated here.
[0046] It should be noted that, since the refrigerator 100 of the present application installs the infrared sensor 10 on the air duct assembly 30 or the box body, the infrared sensor 10 is set independently of the drawer 20, so that the pulling and pulling of the drawer 20 in the refrigerator will not affect the wiring of the infrared sensor 10, and the wiring of the infrared sensor 10 is facilitated when it is assembled in the refrigerator 100.
[0047] like Figure 3 , Figure 6 As shown, the infrared sensor 10 includes a filter 11, and the infrared light radiated by the heat conducting plate 22 can enter the infrared sensor 10 through the filter 11. Here, the filter 11 is square. It should be noted that the above-mentioned infrared sensor 10 can adopt a conventional infrared sensor on the market, and the working principle of how the infrared sensor 10 senses the temperature of the heat conducting plate 22 when working can also adopt a conventional method, which will not be elaborated here.
[0048] As preferably, Figure 3As shown, the first end face 221 of the heat conducting plate 22 facing the infrared sensor 10 is arranged parallel to the filter 11, so that the infrared light radiated by the heat conducting plate 22 can enter the infrared sensor 10 and increase the light transmittance to meet the use requirements of the infrared sensor 10 for sensing the temperature of the heat conducting plate 22. Here, the heat conducting plate 22 is configured as a metal plate, wherein the material of the metal plate can be aluminum alloy, so that the infrared sensor 10 can quickly sense the temperature of the heat conducting plate 22 by utilizing the fast heat conduction characteristics of the metal plate. It should be noted that the photosensitive cone angle of the infrared sensor 10 of the present application is 10° when working, so that the drawer body 21 on the drawer 20 has a certain mold release angle when the plastic injection molding is performed, and the heat conducting plate 22 is also installed on the drawer body 21 at this angle, so that the first end face 221 on the heat conducting plate 22 is parallel to the filter 11, and within the photosensitive cone angle range of the infrared sensor 10, the heat conducting plate 22 cannot be blocked by the drawer body 21.
[0049] like Figure 3 , Figure 4 As shown, an extension protrusion 211 is formed on the drawer body 21, and the extension protrusion 211 extends toward the direction of the infrared sensor 10. The heat conducting plate 22 is attached to the extension protrusion 211 and connected to the extension protrusion 211, so that the second end surface 222 of the heat conducting plate 22 away from the infrared sensor 10 is flush with the inner peripheral wall 201 of the drawer body 21, so as to ensure that the inner cavity of the drawer 20 is beautiful and not abrupt. Here, the heat conducting plate 22 can be fixed to the extension protrusion 211 by screws. Of course, in other embodiments, the heat conducting plate 22 can be fixed to the extension protrusion 211 by thermal conductive glue.
[0050] like Figure 3 As shown, the extending protrusion 211 is provided with a through hole 2111, and the infrared light radiated by the heat conducting plate 22 can enter the infrared sensor 10 through the through hole 2111, and the infrared sensor 10 can sense the temperature of the heat conducting plate 22. In this way, the use requirement of the infrared sensor 10 to sense the temperature of the heat conducting plate 22 can be met.
[0051] It should be noted that the heat conducting plate 22 is not limited to being separately arranged with the drawer body 21. For those skilled in the art, the heat conducting plate 22 and the drawer body 21 may also be connected as one. Specifically, the drawer 20 may be configured as a full metal structure.
[0052] like Figure 5 As shown, the infrared sensor 10 is installed in the air duct assembly 30 .
[0053] As preferably, Figure 5 , Figure 7As shown, the air duct assembly 30 includes a front cover plate 31, an air duct foam 32 and a rear cover plate 33, wherein the front cover plate 31 is fixedly connected to the rear cover plate 33, and the air duct foam 32 is disposed between the front cover plate 31 and the rear cover plate 33; wherein the infrared sensor 10 is disposed between the front cover plate 31 and the air duct foam 32, so that the air duct assembly 30 can use the air duct foam 32 to isolate the infrared sensor 10 from the rear cover plate 33, thereby preventing the low temperature at the back of the air duct assembly 30 from interfering with the operation of the infrared sensor 10. Here, the air duct foam 32 has a certain thickness to ensure that the low temperature at the back of the air duct assembly 30 does not interfere with the infrared sensor 10.
[0054] like Figure 6 As shown, a light-transmitting hole 311 is provided on the front cover plate 31, and the light-transmitting hole 311 is circular; the infrared light radiated by the heat conducting plate 22 can enter the infrared sensor 10 through the light-transmitting hole 311. In other words, the light-transmitting hole 311 on the front cover plate 31 is used for light transmission, and a circular light-transmitting hole 311 is used for light transmission, which can improve the external aesthetics of the air duct assembly 30. It should be noted that the circular shape is more in line with human body design ergonomics than the square shape.
[0055] like Figure 7 As shown, the infrared sensor 10 includes a wiring terminal (not shown), and the wiring terminal can be plugged into an external terminal (not shown); wherein, a wire harness storage area 312 is formed on the front cover 31, and the wiring terminal is arranged in the wire harness storage area 312, so that the user can plug the external terminal into the wiring terminal on the infrared sensor 10 in the wire harness storage area 312 of the front cover 31, which is convenient for the user's operation. It should be noted that a wire clamping groove 313 is also formed on the front cover 31, and the wire clamping groove 313 is used to fix the wire harness connected between the infrared sensor 10 and the wiring terminal.
[0056] In the present application, the minimum distance between the drawer 20 and the front cover 31 is set to L, where L≥7 mm. In other words, the minimum distance between the drawer 20 and the front cover 31 is set to be above 7 mm, so that the drawer 20 will not collide with the front cover 31 during the pulling process.
[0057] In addition, the refrigerator 100 of the present application further includes a refrigeration component (not shown), which can refrigerate the drawer 20 according to the feedback signal, thereby ensuring that the temperature of the drawer 20 is always within a preset range. It should be noted that the method of conducting cold air to the drawer 20 when the refrigeration component is working can adopt the conventional method of existing refrigerators, which will not be elaborated here.
[0058] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above 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.
[0059] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection required by the present invention.
Claims
1. A refrigerator, characterized in that: The refrigerator (100) comprises: An infrared sensor (10) is installed on the air duct assembly (30) or the body of the refrigerator (100); The drawer (20) comprises a drawer body (21) and a heat conducting plate (22), wherein the heat conducting plate (22) is mounted on the drawer body (21) and is thermally connected to the drawer body (21), and the infrared sensor (10) is used to sense the temperature of the heat conducting plate (22) and generate a feedback signal.
2. The refrigerator according to claim 1, characterized in that: The infrared sensor (10) comprises a filter (11); Wherein, a first end surface (221) of the heat conducting plate (22) facing the infrared sensor (10) is arranged parallel to the filter plate (11).
3. The refrigerator according to claim 1, characterized in that: An extension protrusion (211) is formed on the drawer body (21), the extension protrusion (211) extends in the direction of the infrared sensor (10), the heat conducting plate (22) is abutted against the extension protrusion (211) and connected to the extension protrusion (211), so that a second end surface (222) of the heat conducting plate (22) away from the infrared sensor (10) is flush with the inner peripheral wall (201) of the drawer body (21); A through hole (2111) is provided on the extending protrusion (211), and infrared light radiated by the heat conducting plate (22) can enter the infrared sensor (10) through the through hole (2111), thereby enabling the infrared sensor (10) to sense the temperature of the heat conducting plate (22).
4. The refrigerator according to claim 1, characterized in that: The heat conducting plate (22) is configured as a metal plate.
5. The refrigerator according to claim 1, characterized in that: The infrared sensor (10) is installed in the air duct component (30).
6. The refrigerator according to claim 5, characterized in that: The air duct assembly (30) comprises a front cover plate (31), an air duct foam (32) and a rear cover plate (33), wherein the front cover plate (31) is fixedly connected to the rear cover plate (33), and the air duct foam (32) is arranged between the front cover plate (31) and the rear cover plate (33); Wherein, the infrared sensor (10) is arranged between the front cover plate (31) and the air duct foam (32).
7. The refrigerator according to claim 6, characterized in that: The front cover plate (31) is provided with a light-transmitting hole (311), and the infrared light radiated by the heat-conducting plate (22) can enter the infrared sensor (10) through the light-transmitting hole (311); Wherein, the light-transmitting hole (311) is circular.
8. The refrigerator according to claim 6, characterized in that: The minimum distance between the drawer (20) and the front cover (31) is set to L, where L≥7 mm.
9. The refrigerator according to claim 6, characterized in that: The infrared sensor (10) comprises a connection terminal, and the connection terminal can be plugged into an external terminal; Wherein, a wire harness storage area (312) is formed on the front cover plate (31), and the connection terminal is arranged in the wire harness storage area (312).
10. The refrigerator according to claim 1, characterized in that: The refrigerator (100) further comprises a refrigeration component, wherein the refrigeration component is capable of refrigerating the drawer (20) according to the feedback signal.