Liquid heater temperature detection device and liquid heater

Abstract

The utility model relates to the technical field of automobile heaters, in particular to a liquid heater temperature detection device and a liquid heater. The liquid heater temperature detection device comprises a PCB, a flow channel body, a heat conduction piece and at least one temperature detection sensor. The PCB is connected with the runner body; the temperature detection sensor is connected with the PCB; the heat conduction piece is connected with the flow channel positioning column and the detection end of the temperature detection sensor. The liquid heater temperature detection device is simple in structure and convenient to install, the manufacturing and assembling cost can be reduced, the anti-interference performance of signal transmission can be enhanced while the signal transmission distance is shortened, and then the stability of temperature detection can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile heaters, in particular to a temperature detection device for a liquid heater and a liquid heater. Background Art

[0002] At present, during the use of existing liquid heaters, most of them adopt a method of setting a groove on the core body and then embedding the temperature sensor in the groove, and using a pressure plate to press the temperature sensor and close the groove to keep the temperature sensor in the groove, and then transmit the temperature detection signal through the wiring harness of the temperature sensor. This setting method makes the temperature detection structure complicated, and the manufacturing and assembly costs are high. At the same time, it leads to a long signal transmission distance and the risk of interference and distortion. Utility Model Content

[0003] The purpose of the utility model is to provide a liquid heater temperature detection device and a liquid heater, which have a simple structure and are easy to install, and can reduce manufacturing and assembly costs. At the same time, they can enhance the anti-interference ability of signal transmission while shortening the signal transmission distance, thereby increasing the stability of temperature detection.

[0004] The embodiment of the utility model is achieved as follows:

[0005] In a first aspect, the utility model provides a liquid heater temperature detection device, the liquid heater temperature detection device comprising a PCB board, a flow channel body, a heat conducting member and at least one temperature detection sensor;

[0006] The PCB board is connected to the flow channel body; the temperature detection sensor is connected to the PCB board; and the heat conducting member is connected to the flow channel positioning column and the detection end of the temperature detection sensor.

[0007] In an optional embodiment, the PCB board is provided with a positioning through hole, and the positioning through hole is used to correspond to the flow channel positioning column of the flow channel body.

[0008] In an optional embodiment, the heat conducting member includes a heat conducting copper foil, the heat conducting copper foil is connected to the detection end of the temperature detection sensor, and at least a portion of the heat conducting copper foil is connected to the flow channel positioning column.

[0009] In an optional embodiment, at least a portion of the thermally conductive copper foil is located in the positioning through hole, and a matching hole is provided at the portion of the thermally conductive copper foil located in the positioning through hole, and the matching hole is interference-fitted with the flow channel positioning column.

[0010] In an optional embodiment, part of the flow channel positioning column extends out of the positioning through hole, and the thermal conductive copper foil is provided with a matching hole, and the matching hole is interference fit with the part of the flow channel positioning column extending out of the positioning through hole.

[0011] In an optional embodiment, the PCB board is provided with a mounting groove for mounting the thermally conductive copper foil.

[0012] In an optional embodiment, the heat conductive member includes a heat conductive colloid, and the heat conductive colloid is coated on the temperature detection sensor and the flow channel positioning column.

[0013] In an optional embodiment, a portion of the flow channel positioning column extends out of the positioning through hole, and the thermal conductive colloid is coated on the portion of the flow channel positioning column extending out of the positioning through hole.

[0014] In an optional embodiment, the flow channel body is further configured with a connecting column, the PCB board is provided with a connecting hole, and the liquid heater temperature detection device further includes a connecting piece, which cooperates with the connecting hole and is connected to the connecting column.

[0015] In a second aspect, the utility model provides a liquid heater, which includes the above-mentioned liquid heater temperature detection device.

[0016] The beneficial effects of the embodiments of the utility model include:

[0017] The temperature detection device of the liquid heater comprises a PCB board, a flow channel body, a heat conducting member and at least one temperature detection sensor; the PCB board is connected to the flow channel body; the temperature detection sensor is connected to the PCB board; the heat conducting member is connected to the flow channel positioning column and the detection end of the temperature detection sensor. The temperature detection device of the liquid heater has a simple structure and is easy to install, which can reduce the manufacturing and assembly costs, and can also enhance the anti-interference of signal transmission while shortening the signal transmission distance, thereby increasing the stability of the temperature detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the structure of the temperature detection device for the liquid heater in the embodiment of the utility model;

[0020] Figure 2 for Figure 1 The local schematic diagram of the A in the middle;

[0021] Figure 3 It is a partial cross-sectional view of the temperature detection device of the liquid heater in the embodiment of the utility model;

[0022] Figure 4 for Figure 3The local schematic diagram of point B in the middle;

[0023] Figure 5 for Figure 3 Partial schematic diagram of point C in the middle.

[0024] Icons: 100-liquid heater temperature detection device; 110-PCB board; 120-flow channel body; 130-heat conducting member; 140-temperature detection sensor; 121-flow channel positioning column; 111-positioning through hole; 131-thermal conductive copper foil; 132-matching hole; 112-installation slot; 133-thermal conductive colloid; 122-connecting column; 113-connecting hole. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Please refer to Figure 1-Figure 4 , this embodiment provides a liquid heater temperature detection device 100, the liquid heater temperature detection device 100 includes a PCB board 110, a flow channel body 120, a heat conducting member 130 and at least one temperature detection sensor 140;

[0032] The PCB board 110 is connected to the flow channel body 120 ; the temperature detection sensor 140 is connected to the PCB board 110 ; and the heat conducting member 130 is connected to the flow channel positioning column 121 and the detection end of the temperature detection sensor 140 .

[0033] Please refer to Figure 1-Figure 4 The working principle of the liquid heater temperature detection device 100 is:

[0034] First, the liquid heater temperature detection device 100 is used to detect the temperature of the liquid heater, and includes a PCB board 110, a flow channel body 120, a heat conducting member 130 and at least one temperature detection sensor 140;

[0035] When installing the temperature sensor, the temperature detection sensor 140 is connected to the PCB board 110, and the PCB board 110 is connected to the flow channel body 120; thus, through such a setting, the detection signal of the temperature detection sensor 140 can be directly input to the PCB board 110, and further, through such a setting, the anti-interference ability of the temperature sensor in the process of signal transmission can be enhanced, thereby preventing it from being affected by the external environment;

[0036] Furthermore, when configuring the PCB board 110, the PCB board 110 is connected to the flow channel body 120, and thus, the distance between the temperature detection sensor 140 connected to the PCB board 110 and the flow channel body 120 to be detected can be shortened through such a setting, thereby improving the accuracy of temperature detection;

[0037] In addition, by setting the heat conducting member 130, the flow channel positioning column 121 on the flow channel body 120 can be connected to the detection end of the temperature detection sensor 140, so that the heat on the flow channel body 120 can be transferred to the detection end of the temperature detection sensor 140, that is, by such a setting, the temperature detection sensor 140 can detect the temperature of the flow channel body 120;

[0038] In summary, the liquid heater temperature detection device 100 has a simple structure and is easy to install, which can reduce manufacturing and assembly costs. It can also shorten the signal transmission distance while enhancing the anti-interference ability of signal transmission, thereby increasing the stability of temperature detection.

[0039] It should also be noted that when the flow channel positioning column 121 is configured, its function is to position and install the PCB board 110. Based on this, please refer to Figure 1-Figure 4 In order to improve the positioning and installation efficiency of the PCB board 110 and the installation stability of the PCB board 110, the PCB board 110 is provided with a positioning through hole 111, and the positioning through hole 111 is used to correspond to the flow channel positioning column 121 of the flow channel body 120. Moreover, on this basis, the flow channel body 120 can also be configured with a connecting column 122, the PCB board 110 is provided with a connecting hole 113, and the liquid heater temperature detection device 100 also includes a connecting piece, which cooperates with the connecting hole 113 and is connected to the connecting column 122. Therefore, through such a setting method, the PCB can be positioned and connected through the connecting column 122 and the flow channel positioning column 121, so as to improve the connection stability between the PCB board 110 and the flow channel body 120.

[0040] For further information, please refer to Figure 1-Figure 4 On the basis of the above structure, the present embodiment adopts a method of connecting the flow channel positioning column 121 and the detection end of the temperature detection sensor 140 through the heat conductive member 130 so that the temperature detection sensor 140 can detect the temperature of the flow channel body 120. Based on this, in order to improve the temperature detection efficiency, that is, to enable the temperature detection sensor 140 to quickly detect the temperature of the flow channel body 120, the heat conductive member 130 can be set as a heat conductive copper foil 131. By setting the heat conductive copper foil 131, the efficiency of heat conduction is improved. By such a setting method, the temperature detection sensitivity of the temperature detection sensor 140 to the flow channel body 120 is improved;

[0041] Specifically, when the heat-conducting member 130 includes a heat-conducting copper foil 131, the heat-conducting copper foil 131 is connected to the detection end of the temperature detection sensor 140, and at least a portion of the heat-conducting copper foil 131 is connected to the flow channel positioning column 121. In order to improve the connection stability of the heat-conducting copper foil 131, at least a portion of the heat-conducting copper foil 131 can be located in the positioning through hole 111, and the portion of the heat-conducting copper foil 131 located in the positioning through hole 111 is provided with a matching hole 132, and the matching hole 132 is interference-fitted with the flow channel positioning column 121. By such a setting, the contact area between the heat-conducting copper foil 131 and the flow channel positioning column 121 can be increased, and the detection sensitivity can be improved; in addition, part of the flow channel positioning column 121 can be extended out of the positioning through hole 111, and the heat-conducting copper foil 131 is provided with a matching hole 132, and the matching hole 132 is interference-fitted with the portion of the flow channel positioning column 121 extending out of the positioning through hole 111.

[0042] It should be noted that in the above-mentioned installation method of the thermally conductive copper foil 131, an interference fit method is adopted between the matching hole 132 of the thermally conductive copper foil 131 and the flow channel positioning column 121, so as to increase the contact area between the matching hole 132 of the thermally conductive copper foil 131 and the flow channel positioning column 121, thereby improving the efficiency of heat on the flow channel body 120 being transferred to the detection end of the temperature detection sensor 140 through the thermally conductive copper foil 131, thereby improving the detection sensitivity of the temperature detection sensor 140, so that it can quickly sense the temperature change of the flow channel body 120.

[0043] In the above structure, when installing the thermal conductive copper foil 131, in order to improve the installation stability of the thermal conductive copper foil 131, a mounting groove 112 for installing the thermal conductive copper foil 131 can be configured on the PCB board 110, so as to improve the installation stability of the thermal conductive copper foil 131 through such a setting.

[0044] For further information, please refer to Figure 1-Figure 5 , which is different from the above-mentioned arrangement of the heat-conducting copper foil 131, when configuring the heat-conducting member 130, the heat-conducting member 130 may further include a heat-conducting colloid 133, and the heat-conducting colloid 133 is coated on the temperature detection sensor 140 and the flow channel positioning column 121. That is, through such an arrangement, heat can be transferred from the flow channel positioning column 121 to the temperature detection sensor 140 through the heat-conducting colloid 133 coated on the temperature detection sensor 140 and the flow channel positioning column 121.

[0045] Moreover, when configuring the flow channel positioning column 121, a portion of the flow channel positioning column 121 can be extended out of the positioning through hole 111, and the thermal conductive colloid 133 is coated on the portion of the flow channel positioning column 121 extending out of the positioning through hole 111. This arrangement increases the contact area between the thermal conductive colloid 133 and the flow channel positioning column 121 and reduces the difficulty of setting the thermal conductive colloid 133.

[0046] Please note that, please refer to Figure 1-Figure 5 In an embodiment of the utility model, when configuring the heat conductive member 130, the above-mentioned method of setting the heat conductive member 130 as a heat conductive copper foil 131 or a heat conductive colloid 133 can be adopted. In this embodiment, a method of configuring two temperature detection sensors 140 is adopted. Thus, the heat conductive member 130 corresponding to one of the temperature detection sensors 140 can be set to the heat conductive copper foil 131, and the heat conductive member 130 corresponding to the other temperature detection sensor 140 can be set to the heat conductive colloid 133.

[0047] Based on the above, please refer to Figure 1-Figure 5 This embodiment further provides a liquid heater, which includes the above-mentioned liquid heater temperature detection device 100. The above-mentioned flow body can form a flow channel together with other structures in the liquid heater.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A temperature detection device for a liquid heater, characterized in that: The liquid heater temperature detection device comprises a PCB board, a flow channel body, a heat conducting member and at least one temperature detection sensor; The PCB board is connected to the flow channel body; the temperature detection sensor is connected to the PCB board; the heat conducting member is connected to the flow channel positioning column and the detection end of the temperature detection sensor.

2. The liquid heater temperature detection device according to claim 1, characterized in that: The PCB board is provided with a positioning through hole, and the positioning through hole is used to correspond to the flow channel positioning column of the flow channel body.

3. The liquid heater temperature detection device according to claim 2, characterized in that: The heat-conducting member includes a heat-conducting copper foil, the heat-conducting copper foil is connected to the detection end of the temperature detection sensor, and at least a portion of the heat-conducting copper foil is connected to the flow channel positioning column.

4. The liquid heater temperature detection device according to claim 3, characterized in that: At least a portion of the thermally conductive copper foil is located in the positioning through hole, and a matching hole is provided at the portion of the thermally conductive copper foil located in the positioning through hole, and the matching hole is interference-fitted with the flow channel positioning column.

5. The liquid heater temperature detection device according to claim 3, characterized in that: A portion of the flow channel positioning column extends out of the positioning through hole, and the thermal conductive copper foil is provided with a matching hole, and the matching hole is interference-fitted with the portion of the flow channel positioning column extending out of the positioning through hole.

6. The liquid heater temperature detection device according to claim 3, characterized in that: The PCB board is provided with a mounting groove for mounting the thermal conductive copper foil.

7. The liquid heater temperature detection device according to claim 2, characterized in that: The heat-conducting member includes a heat-conducting colloid, and the heat-conducting colloid is coated on the temperature detection sensor and the flow channel positioning column.

8. The liquid heater temperature detection device according to claim 7, characterized in that: A portion of the flow channel positioning column extends out of the positioning through hole, and the heat conductive colloid covers the portion of the flow channel positioning column extending out of the positioning through hole.

9. The liquid heater temperature detection device according to any one of claims 1 to 8, characterized in that: The flow channel body is further configured with a connecting column, the PCB board is provided with a connecting hole, and the liquid heater temperature detection device further comprises a connecting piece, the connecting piece cooperates with the connecting hole and is connected to the connecting column.

10. A liquid heater, characterized in that: The liquid heater comprises the liquid heater temperature detection device as described in any one of claims 1-9.

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