Temperature sensing device and heat pump apparatus

Abstract

This utility model discloses a temperature sensing device and a heat pump device. The temperature sensing device includes an outer casing and a temperature sensing element. The outer casing has a receiving cavity inside, and the casing wall has multiple vents communicating with the receiving cavity. The temperature sensing element is disposed within the receiving cavity, and is offset from any one of the vents. This design ensures that the air outlet paths of the temperature sensing element and any one of the vents are staggered, reducing the direct impact of airflow entering through the vents on the temperature sensing element. This reduces the influence of dust and moisture entering with the airflow on the temperature sensing element, decreases moisture corrosion, and effectively mitigates the accumulation of dust on the temperature sensing element during long-term outdoor use. This allows the temperature sensing element to directly detect changes in air temperature, improving the sensitivity of the temperature sensing device and enhancing the accuracy and reliability of the temperature detection results.

Description

Technical Field

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

[0002] Outdoor heat pump equipment is typically equipped with a temperature detection device to enable the equipment to perform certain functions based on temperature changes. However, existing temperature detection devices have poor dust and water resistance in outdoor environments, and their sensitivity is easily reduced by factors such as sand and dust pollution and rain erosion, affecting the accuracy of the temperature readings. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a temperature sensing device that can improve the sensitivity of temperature detection, while also improving the accuracy and reliability of temperature detection results.

[0004] This utility model also proposes a heat pump device having the above-mentioned temperature sensing device.

[0005] The temperature sensing device according to a first aspect embodiment of the present invention includes:

[0006] The outer box has an internal cavity, and the box wall of the outer box has multiple ventilation holes that communicate with the cavity.

[0007] A temperature sensing element is disposed within the receiving cavity, and the temperature sensing element is offset from any of the vent holes.

[0008] The temperature sensing device according to the first aspect of the present invention has at least the following beneficial effects:

[0009] The temperature sensing device of this invention includes an outer box and a temperature sensing element disposed within a receiving cavity of the outer box. The outer box is provided with a vent hole communicating with the receiving cavity, allowing external airflow to enter the receiving cavity through the vent hole. This enables timely air circulation and renewal between the air inside the receiving cavity and the air outside the outer box, allowing the temperature sensing element inside the outer box to promptly detect temperature changes in the external environment, thus improving the response speed of the temperature sensing device. Furthermore, by staggering the temperature sensing element from any of the vent holes—that is, by separating the airflow path of the temperature sensing element from that of any of the vent holes—this reduces the direct impact of airflow entering through the vent holes on the temperature sensing element. This minimizes the influence of dust and moisture entering with the airflow on the temperature sensing element, reduces moisture corrosion of the temperature sensing element, and effectively mitigates the continuous accumulation of dust on the temperature sensing element during long-term outdoor use. This facilitates the temperature sensing element's direct detection of air temperature changes, improving the sensitivity of the temperature sensing device and enhancing the accuracy and reliability of the temperature detection results.

[0010] According to some embodiments of the present invention, the outer box has a first wall and two second walls disposed at opposite ends of the first wall. The temperature sensing element is disposed on one of the second walls. The orthographic projection area of ​​the temperature sensing element on the first wall is a first region. A plurality of vent holes penetrate the first wall and are disposed outside the first region.

[0011] According to some embodiments of the present invention, the maximum pore width of each vent is a, satisfying: 2≤a≤3mm; and / or, the minimum distance between two adjacent vents is b, satisfying: 1≤b≤3mm.

[0012] According to some embodiments of the present invention, the outer box includes a box body and a cover body, the cover body is detachably connected to the box body and defines the receiving cavity, and the temperature sensing element is disposed on the cover body.

[0013] According to some embodiments of the present invention, one end of the box body is provided with an opening;

[0014] The cover includes a cover plate portion and a connecting portion connected to the cover plate portion. The cover plate portion abuts against the end of the box body where the opening is provided to cover the opening. The connecting portion is located inside the box body and connected to the inner wall of the box body. The connecting portion surrounds the temperature sensing element.

[0015] According to some embodiments of the present invention, the inner wall of the box body is provided with a first threaded portion, and the connecting portion is provided with a second threaded portion on the side opposite to the temperature sensing element. The connecting portion is threadedly connected to the box body through the second threaded portion and the first threaded portion.

[0016] And / or, the temperature sensing element includes a first side away from the cover plate portion, and at least a portion of the structure of the connecting portion protrudes from the first side in a direction away from the cover plate portion.

[0017] According to some embodiments of the present invention, the temperature sensing device further includes a heat-conducting element, which is disposed between the cover plate portion and the temperature sensing element, and the temperature sensing element is bonded to the heat-conducting element.

[0018] According to some embodiments of the present invention, the projected area of ​​the heat-conducting element on the cover plate is greater than the projected area of ​​the temperature-sensing element on the cover plate.

[0019] According to some embodiments of the present invention, the outer wall surface of the outer box where the ventilation hole is provided is set as an arc surface;

[0020] And / or, the outer box is further provided with a wire passage hole communicating with the receiving cavity, the signal wire of the temperature sensing element passes through the wire passage hole, and the temperature sensing device further includes a waterproof ring, which is disposed between the wall of the wire passage hole and the signal wire.

[0021] The heat pump device according to a second aspect of the present invention includes the temperature sensing device described in the above embodiments.

[0022] The heat pump device according to the second aspect embodiment of the present invention has at least the following beneficial effects:

[0023] The temperature sensing device, as described in the first embodiment, includes an outer casing and a temperature sensing element disposed within a receiving cavity of the outer casing. The outer casing has a vent communicating with the receiving cavity, allowing external airflow to enter the receiving cavity through the vent. This enables timely airflow and renewal between the receiving cavity and the external air, allowing the temperature sensing element inside the outer casing to promptly detect temperature changes in the external environment, thus improving the response speed of the temperature sensing device. Furthermore, by misaligning the temperature sensing element with any of the vents—that is, by staggering the airflow paths of the temperature sensing element and any of the vents—this reduces the direct impact of airflow entering through the vents on the temperature sensing element. This minimizes the influence of dust and moisture entering with the airflow on the temperature sensing element, reduces moisture corrosion, and effectively mitigates the accumulation of dust on the temperature sensing element during long-term outdoor use. This facilitates the temperature sensing element's direct detection of air temperature changes, improving the sensitivity of the temperature sensing device and enhancing the accuracy and reliability of the temperature detection results.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0026] Figure 1 This is a schematic diagram of the temperature sensing device according to an embodiment of the present invention;

[0027] Figure 2 This is a cross-sectional view of the temperature sensing device according to an embodiment of the present utility model;

[0028] Figure 3 This is an exploded view of the temperature sensing device according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram showing the connection between the cover and the temperature sensing element of the temperature sensing device according to an embodiment of the present invention.

[0030] Icon labels:

[0031] 10. Temperature sensing device; 100. Outer casing; 101. First wall surface; 102. Second wall surface

[0032] 110. Box body; 111. Receiving cavity; 112. Vent hole; 113. First threaded part; 114. Wire passage hole;

[0033] 120. Cover body; 121. Cover plate portion; 122. Connecting portion; 1221. Second threaded portion;

[0034] 200, Temperature sensing element; 300, Heat-conducting component; 400, Waterproof ring. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0038] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0039] This application provides a temperature sensing device. This temperature sensing device is mainly used in outdoor equipment, such as outdoor heat pump equipment, which can be air conditioners, water heaters, etc. The temperature sensing device is used to detect the ambient temperature so that the heat pump equipment can perform corresponding functional operations according to changes in the ambient temperature.

[0040] Please refer to Figure 1 and Figure 2The temperature sensing device 10 includes an outer box 100 and a temperature sensing element 200. The outer box 100 has a receiving cavity 111 inside, and the box wall of the outer box 100 has a plurality of vent holes 112 communicating with the receiving cavity 111. The temperature sensing element 200 is disposed in the receiving cavity 111.

[0041] The temperature sensing element 200 is located inside the outer casing 100, which protects it from wind and sun exposure, reducing the direct impact of the environment and extending its lifespan when used outdoors. A vent 112 is provided in the outer casing 100, allowing external airflow to enter the receiving cavity 111. This ensures timely air circulation and renewal between the receiving cavity 111 and the outside air, carrying external heat (or cold) into the receiving cavity 111. This allows the temperature sensing element 200 to detect changes in external temperature even inside the outer casing 100, ensuring the response speed of the temperature sensing device 10.

[0042] Since the temperature sensing device 10 is used in an outdoor environment for a long time, if only the vent 112 is set up without any treatment, sand and impurities in the external environment will enter the outer box 100 through the vent 112 with the airflow. The sand and dust will continuously cover and accumulate on the temperature sensing element 200, causing the temperature sensing element 200 to be unable to directly sense the temperature change of the air, affecting the sensitivity of the temperature sensing element 200 in detecting the temperature, and also affecting the accuracy and reliability of the temperature detection results.

[0043] In this embodiment, the temperature sensing element 200 is offset from any of the vent holes 112. Specifically, the temperature sensing element 200 can be offset from the vent hole 112 along its central axis or perpendicular to its central axis. Taking a cylindrical vent hole 112 as an example, the temperature sensing element 200 can be offset from the vent hole 112 along its axial direction or radial direction.

[0044] In this way, the air outlet path of the temperature sensing element 200 is staggered from that of any of the vent holes 112, which reduces the direct impact of airflow entering from the vent holes 112 on the temperature sensing element 200. This reduces the impact of sand and moisture entering with the airflow on the temperature sensing element 200, reduces the corrosion of the temperature sensing element 200 by moisture, and effectively mitigates the continuous accumulation of sand and dust on the temperature sensing element 200 during long-term outdoor use. This facilitates the temperature sensing element 200 in directly sensing changes in air temperature, improves the sensitivity of the temperature sensing device 10 in detecting temperature, and enhances the accuracy and reliability of the temperature detection results.

[0045] In some embodiments, the outer casing 100 has a first wall 101 and two second walls 102 disposed at opposite ends of the first wall 101. The temperature sensing element 200 is disposed on one of the second walls 102, and a plurality of vent holes 112 penetrate the first wall 101. The area projected onto the first wall 101 by the temperature sensing element 200 is a first region, and the plurality of vent holes 112 are disposed outside the first region. In other words, the vent holes 112 are located outside the area projected onto the first wall 101 by the temperature sensing element 200. In other words, the temperature sensing element 200 and the vent holes 112 are not opposite each other. Thus, the airflow entering through the vent holes 112 will not directly blow onto the temperature sensing element 200, significantly reducing the direct impact of dust and moisture carried by the airflow on the temperature sensing element 200. This further facilitates the temperature sensing element 200 in directly sensing changes in air temperature, thereby further improving the accuracy and reliability of temperature measurement by the temperature sensing element 200.

[0046] In some embodiments, the maximum pore width of each vent 112 is 'a', satisfying: 2 ≤ a ≤ 3 mm. It should be noted that the maximum pore width of the vent 112 refers to the maximum width of the vent 112 along a direction perpendicular to its own central axis. In one embodiment, the vent 112 is configured as a cylindrical hole, then the diameter of each vent 112 is its maximum pore width.

[0047] Taking a circular vent 112 as an example, when the diameter of the vent 112 is less than 2mm, although it can effectively prevent sand and water droplets from entering the receiving cavity 111, the resistance to air entry is also relatively large, and the airflow is significantly reduced. When the diameter of the vent 112 is greater than 3mm, the airflow of the vent 112 is very good, but it is not easy to prevent sand and water droplets from entering the receiving cavity 111. In this embodiment, by setting the maximum pore width of the vent 112 to 2-3mm, the airflow can be maximized while effectively reducing the entry of sand and water into the receiving cavity 111.

[0048] In some embodiments, the minimum distance between two adjacent vent holes 112 is b, satisfying: 1≤b≤3mm. It can be understood that the minimum distance between two adjacent vent holes 112 is the closest distance between the edges of the holes of two adjacent vent holes 112.

[0049] Taking the ventilation hole 112 as a round hole as an example, when the minimum distance between two adjacent ventilation holes 112 is less than 1mm, the box wall between adjacent ventilation holes 112 is less, and the ability to block sand and water droplets is weak. Moreover, the ventilation holes 112 are too densely arranged, which will reduce the strength of the box wall of the outer box 100 and is not conducive to the processing of ventilation holes 112. When the minimum distance between two adjacent ventilation holes 112 is greater than 3mm, the distance between adjacent ventilation holes 112 is far. At this time, there is more box wall between adjacent ventilation holes 112. Although it can better block sand and water droplets from entering through the ventilation hole 112, the small size of the ventilation hole 112 itself will obstruct the airflow and is not conducive to the entry of air. In this embodiment, by setting the minimum distance between two adjacent vent holes 112 to between 1-3mm, the distance between the vent holes 112 is more suitable, which can reduce the resistance encountered by air when entering from multiple vent holes 112. At the same time, the box wall between adjacent vent holes 112 can effectively block sand and water droplets from entering the receiving cavity 111.

[0050] By designing the size and arrangement of the vent holes 112 as described above, the airflow is improved while effectively reducing the amount of sand and water droplets entering the receiving cavity 111 through the vent holes 112. This facilitates the rapid sensing of ambient temperature changes by the temperature sensing element 200, improves the response speed of the temperature sensing device 10, and enhances the accuracy and reliability of the temperature detection results.

[0051] In some embodiments, please refer to Figure 3 The outer box 100 includes a box body 110 and a cover 120. The cover 120 is detachably connected to the box body 110 and defines the aforementioned receiving cavity 111. The box body 110 is used for installation on a heat pump device, that is, the temperature sensing device 10 is fixed to the heat pump device through the box body 110.

[0052] In this embodiment, the outer box 100 is composed of a detachable box body 110 and a cover 120, allowing the cover 120 to be separated from the box body 110 for convenient maintenance of the temperature sensing device 10. For example, when the temperature sensing element 200 needs to be replaced or repaired, the user can replace or repair the temperature sensing element 200 separately without replacing the entire temperature sensing device 10, which facilitates maintenance and reduces maintenance costs. The user can also periodically or as needed disassemble the cover 120 and the box body 110 to clean sand, debris, and other contaminants that have entered the outer box 100.

[0053] In one embodiment, the temperature sensing element 200 is connected to the cover 120. By placing the temperature sensing element 200 on the cover 120, when the temperature sensing element 200 needs to be replaced or repaired, it is only necessary to remove the cover 120 from the housing 110 to operate on the temperature sensing element 200. That is, it is only necessary to disconnect the connection between the cover 120 and the housing 110, without having to remove the housing 110 from the heat pump equipment, which further facilitates maintenance operations and improves maintenance efficiency.

[0054] The box body 110 may include the first wall surface 101 and one of the second walls surface 102, and the cover body 120 includes the other of the second walls surface 102.

[0055] In one embodiment, the outer wall surface of the outer box 100 with the ventilation hole 112 is set as an arc surface, that is, the outer wall surface of the box body 110 is set as an arc surface, so that the box body 110 is designed as a streamlined shape, thereby enabling the box body 110 to guide the smooth flow of air, reduce airflow resistance, and facilitate the air to bring ambient heat into the receiving cavity 111.

[0056] In some embodiments, please combine Figure 2 And refer to Figure 4 The box body 110 is provided with an opening, and the cover body 120 includes a cover plate portion 121 and a connecting portion 122 connected to the cover plate portion 121. The cover plate portion 121 abuts against the end of the box body 110 that has an opening to cover the opening. The connecting portion 122 is located inside the box body 110 and is connected to the inner wall of the box body 110. The connecting portion 122 surrounds the temperature sensing element 200.

[0057] By surrounding the temperature sensing element 200 with the connecting portion 122, the waterproof effect of the temperature sensing element 200 can be improved. Specifically, when the temperature sensing device 10 is in a harsh environment, and external moisture enters from the connection gap between the cover 120 and the box 110, the moisture needs to flow along the connecting portion 122 to the end of the connecting portion 122 and overflow inward from the end of the connecting portion 122 to affect the temperature sensing element 200. This greatly increases the difficulty of moisture directly affecting the temperature sensing element 200 and effectively reduces the risk of the temperature sensing element 200 being corroded by external moisture.

[0058] In some embodiments, please refer to the reference Figure 2 , Figure 3 and Figure 4The inner wall of the box body 110 is provided with a first threaded portion 113, and the connecting portion 122 is provided with a second threaded portion 1221 on the side opposite to the temperature sensing element 200. The connecting portion 122 is threadedly connected to the box body 110 through the second threaded portion 1221 and the first threaded portion 113. That is, the cover 120 and the box body 110 are connected by threads. When the cover 120 and the box body 110 are installed or removed, only a torsional torque needs to be applied to the cover 120 to make the cover 120 rotate relative to the box body 110 along the threads to realize the connection or separation operation between the two.

[0059] In some embodiments, the temperature sensing element 200 includes a first side facing away from the cover plate portion 121, and at least a portion of the structure of the connecting portion 122 protrudes from the first side in a direction away from the cover plate portion 121. Thus, when viewed along the direction directly opposite the outer wall of the connecting portion 122 (i.e., in the radial direction of the entire cover 120), the temperature sensing element 200 is not visible from the outside of the cover 120 because the connecting portion 122 protrudes from the first side of the temperature sensing element 200.

[0060] When the external airflow enters the receiving cavity 111 through the vent 112, the obstruction effect of the connecting part 122 further prevents the airflow from directly blowing onto the temperature sensing element 200, thus avoiding the sand or moisture carried in the airflow from directly affecting the temperature sensing element 200.

[0061] In some embodiments, the temperature sensing device 10 further includes a heat-conducting element 300 disposed between the cover plate portion 121 and the temperature sensing element 200. The heat-conducting element 300 may be thermally conductive silicone, a thermally conductive sheet, or the like.

[0062] In this embodiment, a heat-conducting element 300 is provided between the cover plate 121 and the temperature sensing element 200. The heat-conducting element 300 plays a role in heat conduction. When the ambient temperature changes, the cover plate 121 will be the first to sense the heat change (relative to the inside of the receiving cavity 111). The heat-conducting element 300 can transfer the heat received by the cover plate 121 to the temperature sensing element 200, so that the temperature sensing element 200 can quickly sense the change in ambient temperature, further improving the response speed of the temperature sensing element 200, which is beneficial to the accuracy and reliability of the temperature detection results.

[0063] In one embodiment, the temperature sensing element 200 is bonded to the heat-conducting element 300, which can ensure that the temperature sensing element 200 and the heat-conducting element 300 are in full and close contact, so that there is a sufficient heat exchange area between the temperature sensing element 200 and the heat-conducting element 300, thereby improving the heat conduction effect of the heat-conducting element 300 on the temperature sensing element 200.

[0064] In some embodiments, reference Figure 2As shown, the projected area of ​​the heat-conducting element 300 on the cover plate portion 121 is larger than the projected area of ​​the temperature-sensing element 200 on the cover plate portion 121. This larger heat-conducting element 300 provides a larger heat exchange area between itself and the cover plate portion 121, allowing for more heat exchange between the heat-conducting element 300 and more parts of the cover plate portion 121. This promotes uniform heat exchange, enabling the cover 120 to uniformly sense changes in heat, and consequently, the temperature-sensing element 200 to uniformly sense changes in ambient temperature, further improving the accuracy and reliability of the temperature detection by the temperature-sensing device 10.

[0065] In some embodiments, for connecting the temperature sensing element 200 to a heat pump device, please refer to... Figure 1 The outer casing 100 is also provided with a wire passage hole 114 communicating with the receiving cavity 111, through which the signal line of the temperature sensing element 200 passes. In one embodiment, the wire passage hole 114 extends through the side wall of the casing 110 so that the signal line can be routed along the surface of the heat pump equipment after extending out of the wire passage hole 114, reducing the bending of the signal line.

[0066] In some embodiments, the temperature sensing device 10 further includes a waterproof ring disposed between the wall of the wire hole 114 and the signal line. The waterproof ring serves to provide waterproofing. By providing the waterproof ring, the gap between the signal line and the wire hole 114 can be significantly reduced, effectively increasing the difficulty for external moisture to enter the receiving cavity 111 through this gap. This can improve the waterproofing effect of the temperature sensing device 10 and reduce the risk of moisture erosion of the temperature sensing element 200 and the connection between the temperature sensing element 200 and the signal line.

[0067] This application also provides a heat pump device, which includes a temperature sensing device 10 based on any of the above embodiments. The heat pump device can be an air conditioner, a water heater, etc.

[0068] Since the heat pump equipment adopts all the technical solutions of the temperature sensing device in the above embodiments, it has at least all the beneficial effects brought about by the technical solutions in the above embodiments.

[0069] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A temperature sensing device, characterized by include: The outer box has an internal cavity, and the box wall of the outer box has multiple ventilation holes that communicate with the cavity. A temperature sensing element is disposed within the receiving cavity, and the temperature sensing element is offset from any of the vent holes.

2. The temperature sensing device of claim 1, wherein The outer box has a first wall and two second walls located at opposite ends of the first wall. The temperature sensing element is located on one of the second walls. The area of ​​the temperature sensing element projected onto the first wall is a first region. Multiple vent holes penetrate the first wall and are located outside the first region.

3. The temperature sensing device of claim 1, wherein, The maximum pore width of each vent is a, satisfying: 2≤a≤3mm; and / or, the minimum distance between two adjacent vents is b, satisfying: 1≤b≤3mm.

4. A temperature sensing device according to any one of claims 1 to 3, wherein The outer box includes a box body and a cover detachably connected to the box body. The box body and the cover define the receiving cavity. The box body is provided with a plurality of ventilation holes, and the temperature sensing element is disposed on the cover.

5. The temperature sensing device of claim 4, wherein, An opening is provided at one end of the box body; The cover includes a cover plate portion and a connecting portion connected to the cover plate portion. The cover plate portion abuts against the end of the box body where the opening is provided to cover the opening. The connecting portion is located inside the box body and connected to the inner wall of the box body. The connecting portion surrounds the temperature sensing element.

6. The temperature sensing device of claim 5, wherein, The inner wall of the box is provided with a first threaded portion, and the connecting portion is provided with a second threaded portion on the side opposite to the temperature sensing element. The connecting portion is threadedly connected to the box through the second threaded portion and the first threaded portion. And / or, the temperature sensing element includes a first side away from the cover plate portion, and at least a portion of the structure of the connecting portion protrudes from the first side in a direction away from the cover plate portion.

7. The temperature sensing device of claim 5, wherein, The temperature sensing device further includes a heat-conducting component, which is disposed between the cover plate and the temperature sensing element, and the temperature sensing element is bonded to the heat-conducting component.

8. The temperature sensing device of claim 7, wherein, The projected area of ​​the heat-conducting element on the cover plate is greater than the projected area of ​​the temperature-sensing element on the cover plate.

9. A temperature sensing device according to any one of claims 1 to 3, wherein The outer wall surface of the outer box, where the ventilation hole is provided, is set as an arc surface; And / or, the outer box is further provided with a wire passage hole communicating with the receiving cavity, the signal wire of the temperature sensing element passes through the wire passage hole, and the temperature sensing device further includes a waterproof ring, which is disposed between the wall of the wire passage hole and the signal wire.

10. Heat pump apparatus, characterised in that Includes the temperature sensing device as described in any one of claims 1 to 9.

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