Temperature sensing device

Abstract

The utility model discloses a temperature sensing device, including temperature -sensing element, its characterized in that, still including heat insulation ceramic piece and water -through shell that have, the heat insulation ceramic piece is opened and has the accommodation cavity, temperature -sensing element is fixed in the accommodation cavity through filling material, be provided with detection cavity in water -through shell, and the water -through shell both sides open and have the water inlet and the water outlet of the intercommunication detection cavity, temperature -sensing element is fixed together with heat insulation ceramic piece on detection cavity and the lead wire of temperature -sensing element extends out water -through shell outside, this temperature sensing device, through setting temperature -sensing element on heat insulation ceramic piece, on one hand, the heat insulation ceramic piece's temperature -transmitting speed is faster than metal material, can realize fast temperature -transmitting, on the other hand, the insulation effect of heat insulation ceramic piece is good, can be well separated open temperature -sensing element and water -through shell, avoid temperature -sensing element when electric leakage influence water -through shell.

Description

Technical Field

[0001] This utility model relates to the field of sensor technology, and in particular to a temperature sensing device. Background Technology

[0002] Existing temperature sensing devices, such as Chinese Invention Patent CN109580029B, entitled "A Insertable, Close-fitting Temperature Sensor," authorized on October 22, 2021, use a metal casing as a conductor. However, the temperature transfer speed and effectiveness of the metal casing are generally poor. Furthermore, because the metal casing is conductive, the thermistor cannot be in direct contact with it during installation; otherwise, leakage could pose a risk of electric shock to consumers. Therefore, the installation requirements for the thermistor inside the metal casing are high, and the installation is difficult. While existing production methods use grounding wires to address the risk of electric shock, this increases both the installation process and the overall manufacturing cost. Moreover, when the temperature sensor is used to measure water temperature, it requires an external structure to fix it inside the object being measured (such as the water tank of a water dispenser), making the installation process cumbersome. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a temperature sensing device that is fast in temperature transfer, has good insulation, and is easy to install.

[0004] The purpose of this utility model is achieved as follows: A temperature sensing device includes a temperature sensing element, characterized in that it further includes a thermally conductive and insulating ceramic component and a water-passing shell. The thermally conductive and insulating ceramic component has a receiving cavity, and the temperature sensing element is fixed in the receiving cavity by a filling material. A detection chamber is provided inside the water-passing shell, and an inlet and an outlet communicating with the detection chamber are provided on both sides of the water-passing shell. The temperature sensing element, together with the thermally conductive and insulating ceramic component, is fixed on the detection chamber, and the wire of the temperature sensing element extends out of the water-passing shell. This temperature sensing device, by placing the temperature sensing element on the thermally conductive and insulating ceramic component, achieves rapid temperature transfer because the thermally conductive and insulating ceramic component has a faster temperature transfer speed than metal materials. Furthermore, the thermally conductive and insulating ceramic component has good insulation properties, effectively separating the temperature sensing element and the water-passing shell, preventing leakage of the temperature sensing element from affecting the water-passing shell. Additionally, the temperature sensing shell serves as a detection carrier for the temperature sensing element and the thermally conductive and insulating ceramic component to detect water temperature. During operation, the water-passing shell only needs to be connected to an external product, facilitating the installation and fixing of the temperature sensing element and the thermally conductive and insulating ceramic component to the shell product.

[0005] The objective of this utility model can also be achieved by the following technical measures: Specifically, the temperature sensing element is located near the bottom of the receiving cavity, the distance from the bottom surface of the receiving cavity to the bottom surface of the thermally conductive and insulating ceramic component is H, and the distance from the side surface of the receiving cavity to the side surface of the thermally conductive and insulating ceramic component is L, where H < L; so that the temperature of the bottom surface of the thermally conductive and insulating ceramic component can be quickly transferred to the temperature sensing element, thereby achieving rapid temperature measurement.

[0006] Specifically, the receiving cavity is wider at the top and narrower at the bottom; this facilitates the installation of the temperature sensing element in the receiving cavity and ensures a stable installation of the temperature sensing element in the receiving cavity.

[0007] Specifically, the water-passing housing includes a water-passing base and a base cover. The water-passing base has the detection cavity inside. The base cover is fixed at the upper opening of the detection cavity. The thermally conductive and insulating ceramic component is fixed inside the base cover, and the lower part of the thermally conductive and insulating ceramic component passes downward through the base cover and extends into the detection cavity. The wire of the temperature sensing element extends upward out of the water-passing housing. The base cover can provide a mounting carrier for the thermally conductive and insulating ceramic component, which can then be installed on the water-passing base through the base cover, thereby realizing the installation and fixation of the temperature sensing element in the detection cavity. The operation is simple and the implementation effect is good.

[0008] Specifically, the thermally conductive and insulating ceramic component and the seat cover are integrally molded and connected by injection molding; this injection molding process is simple and provides good fixation.

[0009] Specifically, the outer side of the thermally conductive insulating ceramic component is provided with a waterproof protrusion, and the inner side of the seat cover is provided with a waterproof recess corresponding to the waterproof protrusion, with the waterproof protrusion extending into the waterproof recess; through the cooperation of the waterproof protrusion and the waterproof recess, water in the detection chamber can be effectively prevented from flowing out from the gap between the thermally conductive insulating ceramic component and the seat cover, thus achieving a good waterproof effect.

[0010] Specifically, the outer side of the thermally conductive insulating ceramic component is provided with two or more waterproof protrusions spaced apart in the vertical direction, and the inner side of the seat cover is provided with two or more waterproof recesses spaced apart in the vertical direction; in order to further improve the waterproof effect between the outer side of the thermally conductive insulating ceramic component and the inner side of the seat cover.

[0011] Specifically, the thermally conductive and insulating ceramic component is made of alumina or silicon nitride, and the water inlet base and cover are made of PP plastic. Specifically, the temperature sensing element is a temperature sensing chip or a thermistor.

[0012] Specifically, the filling material is epoxy resin or thermally conductive plastic.

[0013] The beneficial effects of this utility model are as follows: (1) This temperature sensing device sets the temperature sensing element on a thermally conductive and insulating ceramic part. On the one hand, the thermally conductive and insulating ceramic part has a faster temperature transfer speed than metal materials, which can achieve rapid temperature transfer. On the other hand, the thermally conductive and insulating ceramic part has a good insulation effect, which can effectively separate the temperature sensing element and the water-conducting shell, and prevent the temperature sensing element from affecting the water-conducting shell when it leaks electricity. Furthermore, the temperature sensing shell serves as the detection carrier for the temperature sensing element and the thermally conductive and insulating ceramic part to detect the water temperature. When working, it is only necessary to connect the water-conducting shell to the external product, which facilitates the installation and fixation between the temperature sensing element and the thermally conductive and insulating ceramic part and the shell product.

[0014] (2) The seat cover can provide an installation carrier for the thermally conductive and insulating ceramic parts, and then install them on the water supply seat through the seat cover to realize the installation and fixation of the temperature sensing element in the detection cavity. The operation is simple and the implementation effect is good.

[0015] (3) The combination of the waterproof protrusion and the waterproof recess can effectively prevent water from the test chamber from flowing out from the gap between the thermally conductive insulating ceramic part and the seat cover, thus achieving a good waterproof effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the temperature sensing device of this utility model.

[0017] Figure 2 This is a cross-sectional view of the temperature sensing device of this utility model.

[0018] Figure 3 This is another cross-sectional view of the temperature sensing device of this utility model. Detailed Implementation

[0019] The present patent will be further described below with reference to the accompanying drawings and embodiments: The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures, and should not be construed as limiting the present patent; In order to better illustrate the embodiments of the present patent, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size; It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0020] The terms "first," "second," etc., used in this patent do not indicate any order, quantity, or importance, but are merely for distinction. The terms "one," "a kind," etc., used in this patent do not indicate a limitation on quantity, but rather indicate the presence of at least one of the mentioned objects. The terms indicating direction or location used in this patent, such as "top," "bottom," "side," "longitudinal," "lateral," "middle," "center," "outer," "inner," "horizontal," "vertical," "left," "right," "above," "below," etc., reflect relative positions, not absolute positions; those skilled in the art can understand the specific meaning of these terms according to the specific circumstances.

[0021] Implementation examples, in conjunction with Figures 1 to 3 As shown, a temperature sensing device includes a temperature sensing element 1, characterized in that it further includes a thermally conductive and insulating ceramic component 2 and a water-conducting housing 3. The thermally conductive and insulating ceramic component 2 has a receiving cavity 21. The temperature sensing element 1 is fixed in the receiving cavity 21 by a filling material 4. A detection cavity 31 is provided inside the water-conducting housing 3. The water-conducting housing 3 has an inlet 32 ​​and an outlet 33 on both sides that communicate with the detection cavity 31. The temperature sensing element 1, together with the thermally conductive and insulating ceramic component 2, is fixed on the detection cavity 31, and the wire 11 of the temperature sensing element 1 extends out of the water-conducting housing 3.

[0022] As a specific embodiment, the temperature sensing element 1 is located near the bottom of the receiving cavity 21, the distance from the bottom surface of the receiving cavity 21 to the bottom surface of the thermally conductive and insulating ceramic component 2 is H, and the distance from the side surface of the receiving cavity 21 to the side surface of the thermally conductive and insulating ceramic component 2 is L, where H < L.

[0023] In this embodiment, the receiving cavity 21 is wider at the top and narrower at the bottom.

[0024] As a more specific embodiment, the water-conducting housing 3 includes a water-conducting base 5 and a base cover 6. The water-conducting base 5 has a detection cavity 31 inside. The base cover 6 is fixed at the upper opening of the detection cavity 31. The thermally conductive insulating ceramic component 2 is fixed inside the base cover 6, and the lower part of the thermally conductive insulating ceramic component 2 passes downward through the base cover 6 and extends into the detection cavity 31. The wire 11 of the temperature sensing element 1 extends upward out of the water-conducting housing 3.

[0025] As a preferred embodiment, a waterproof protrusion 22 is provided on the outer side of the thermally conductive and insulating ceramic component 2, and a waterproof recess 61 is provided on the inner side of the cover 6 corresponding to the position of the waterproof protrusion 22, with the waterproof protrusion 22 extending into the waterproof recess 61.

[0026] In this embodiment, the outer side of the thermally conductive and insulating ceramic component 2 is provided with two or more waterproof protrusions 22 spaced apart in the vertical direction, and the inner side of the seat cover 6 is provided with two or more waterproof recesses 61 spaced apart in the vertical direction.

[0027] As a more specific embodiment, the thermally conductive and insulating ceramic component 2 is made of alumina or silicon nitride, and the water inlet 5 and the cover 6 are made of PP plastic.

[0028] In the actual manufacturing process, the thermally conductive and insulating ceramic part 2 can be placed in the mold, and the seat cover 6 can be injection molded onto the outer periphery of the thermally conductive and insulating ceramic part 2 to achieve a fixed connection between the seat cover 6 and the thermally conductive and insulating ceramic part 2. This injection molding method has a simple production process and a good fixing effect.

[0029] As a more specific embodiment, the temperature sensing element 1 is a temperature sensing chip or a thermistor.

[0030] As a more specific embodiment, the filling material 4 is epoxy resin or thermally conductive plastic.

[0031] The embodiments described above are merely examples for clearly illustrating this patent, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this patent, and these all fall within the scope of protection of this patent. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A temperature sensing device, comprising a temperature sensing element (1), characterized in that, It also includes a thermally conductive and insulating ceramic component (2) and a water-conducting shell (3). The thermally conductive and insulating ceramic component (2) has a receiving cavity (21). The temperature sensing element (1) is fixed in the receiving cavity (21) by filling material (4). The water-conducting shell (3) has a detection cavity (31). The water-conducting shell (3) has an inlet (32) and an outlet (33) on both sides that connect to the detection cavity (31). The temperature sensing element (1) together with the thermally conductive and insulating ceramic component (2) is fixed on the detection cavity (31), and the wire (11) of the temperature sensing element (1) extends out of the water-conducting shell (3).

2. The temperature sensing device according to claim 1, characterized in that, The temperature sensing element (1) is located near the bottom of the receiving cavity (21). The distance from the bottom surface of the receiving cavity (21) to the bottom surface of the thermally conductive and insulating ceramic part (2) is H, and the distance from the side surface of the receiving cavity (21) to the side surface of the thermally conductive and insulating ceramic part (2) is L, where H < L.

3. The temperature sensing device according to claim 2, characterized in that, The cavity (21) is wider at the top and narrower at the bottom.

4. The temperature sensing device according to claim 1, characterized in that, The water-conducting housing (3) includes a water-conducting base (5) and a base cover (6). The water-conducting base (5) has a detection cavity (31) inside. The base cover (6) is fixed at the upper opening of the detection cavity (31). The thermally conductive insulating ceramic component (2) is fixed inside the base cover (6), and the lower part of the thermally conductive insulating ceramic component (2) passes downward through the base cover (6) and extends into the detection cavity (31). The wire (11) of the temperature sensing element (1) extends upward out of the water-conducting housing (3).

5. The temperature sensing device according to claim 4, characterized in that, The thermally conductive and insulating ceramic component (2) and the seat cover (6) are integrally formed and connected by injection molding.

6. The temperature sensing device according to claim 5, characterized in that, The outer side of the thermally conductive insulating ceramic component (2) is provided with a waterproof protrusion (22), and the inner side of the seat cover (6) is provided with a waterproof recess (61) corresponding to the waterproof protrusion (22), with the waterproof protrusion (22) extending into the waterproof recess (61).

7. The temperature sensing device according to claim 6, characterized in that, The outer side of the thermally conductive insulating ceramic component (2) is provided with two or more waterproof protrusions (22) spaced apart in the vertical direction, and the inner side of the seat cover (6) is provided with two or more waterproof recesses (61) spaced apart in the vertical direction.

8. The temperature sensing device according to claim 5, characterized in that, The thermally conductive and insulating ceramic component (2) is made of alumina or silicon nitride, and the water inlet (5) and the cover (6) are made of PP plastic.

9. The temperature sensing device according to claim 1, characterized in that, The temperature sensing element (1) is a temperature sensing chip or a thermistor.

10. The temperature sensing device according to claim 1, characterized in that, The filling material (4) is epoxy resin or thermally conductive plastic.

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