A compressor external structure provided with a temperature sensor

Abstract

The utility model provides a kind of compressor external structure with temperature sensor, including external main body component, external main body component includes shell and upper cover, it further includes U type heat conduction support and temperature sensor, U type heat conduction support includes bottom plate and the clamping sheet of its both sides, temperature sensor is engaged in U type heat conduction support inside;Bottom plate is welded on external main body component. The effective contact area of temperature sensor and external main body component is increased by the bottom plate of U type heat conduction support, the direct heat conduction path of " compressor upper cover or shell (heat zone) → support welding part → clamping part → temperature sensor" is built, and the path length and temperature conduction time are compressed. Fixed by direct welding mode, replace fastener connection, not only structure integrality is strong, there is no risk of loosening, adapt compressor long-term high-frequency vibration working condition;And this kind of mode eliminates assembly gap, and the thermal resistance of heat conduction can be reduced by more than 40%.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning equipment technology, and in particular to an external structure of a compressor equipped with a temperature sensor. Background Technology

[0002] Currently, in compressor temperature monitoring solutions, temperature sensors are mostly placed in the system's exhaust piping. The compressor's operating temperature is indirectly reflected by the refrigerant temperature in the piping, with temperature acquisition achieved through an indirect heat conduction path of "compressor → refrigerant → piping → sensor." However, this method has the following problems: The exhaust pipe is spatially separated from the compressor body (≥500mm), requiring temperature to be conducted through multiple stages, resulting in a significant delay (10~20 seconds) in the sensor's detection of compressor temperature changes. Furthermore, the dynamic changes in refrigerant flow during compressor operation lead to detection errors exceeding ±5℃, making accurate triggering within ±3℃ difficult. In cases of abnormal compressor temperature rise (such as stall or overload), the protection mechanism cannot be triggered quickly, potentially damaging the compressor motor. The motor windings are more delicate, and overheating can cause irreversible aging of the insulation layer. Electrical control malfunctions, such as failure to shut down in time during high-frequency operations or incorrect shutdown during low-frequency operations, negatively impact user experience and damage air conditioning electrical control components.

[0003] In addition, the compressor cover does not have a dedicated temperature sensor mounting structure. If additional fasteners (such as bolts) are used to fix the bracket, thermal resistance is easily generated due to the connection gap, which reduces the temperature conduction efficiency. Moreover, under operating conditions, frequent vibration can easily cause the fastener connection to loosen, affecting the stability and lifespan of the sensor. Utility Model Content

[0004] To address the issues of lag in compressor temperature feedback and installation defects of temperature sensors mounted on the top cover in existing technologies, this utility model provides an external compressor structure equipped with a temperature sensor, including an external main body assembly. The external main body assembly includes a housing and a top cover, and further includes a U-shaped heat-conducting bracket and a temperature sensor. The U-shaped heat-conducting bracket includes a base plate and clamping pieces on both sides. Each clamping piece has a connecting part at its lower part that is connected to one side of the base plate. The clamping pieces, the connecting parts, and the base plate are integrally formed. The temperature sensor is fitted into a U-shaped heat-conducting bracket; The base plate is welded to the external main body component.

[0005] Furthermore, the clamping piece is an L-shaped plate-like component, which includes a first clamping part connected to the connecting part and a second clamping part away from the base plate.

[0006] Furthermore, the second clamping part is an elastic member, while the first clamping part is a rigid member.

[0007] Furthermore, the clamping piece is shaped to fit the shape of the temperature sensor.

[0008] Furthermore, the clamping piece is an arc surface that fits the temperature sensor.

[0009] Furthermore, both the clamping plates and the connecting portion are elastic; when the temperature sensor is placed in the U-shaped heat-conducting bracket, the two clamping plates expand outward to clamp the temperature sensor.

[0010] Furthermore, when the temperature sensor is placed on the U-shaped heat-conducting bracket, the two clamping pieces are expanded outward by a total of 0.1~2mm.

[0011] Furthermore, the clamping piece has a bent portion along the length direction of the temperature sensor, and the bent portion is integrally formed with the clamping piece; the bent portion is bent away from the temperature sensor, and the intersection of the bent portion and the clamping piece has an arc chamfer on the side closer to the temperature sensor.

[0012] Furthermore, spot-welded positioning components are respectively provided at corresponding positions on the base plate and the external main body component.

[0013] Compared with the prior art, this utility model has the following beneficial effects: The U-shaped heat-conducting bracket is directly installed on the top cover (or housing). Its base plate increases the effective contact area between the temperature sensor and the top cover (or housing), creating a direct heat conduction path of "compressor top cover or housing (heating area) → bracket welding part → clamping part → temperature sensor". The path length is compressed to ≤50mm (more than 90% shorter than the layout on the exhaust system side), shortening the temperature conduction time. In case of abnormal temperature rise, the shutdown mechanism can be triggered in time, effectively protecting the compressor and air conditioning system.

[0014] The base plate of the U-shaped heat-conducting bracket is fixed by direct welding, replacing fastener connections. This not only ensures strong structural integrity and eliminates the risk of loosening, making it suitable for the long-term high-frequency vibration conditions of compressors, but also eliminates assembly gaps. Compared to the "mechanical bracket + assembly gap" method, thermal resistance is reduced by more than 40%, maximizing temperature conduction efficiency and significantly improving temperature response speed. This method also balances thermal conductivity and vibration resistance, ensuring long-term stable operation of the sensor.

[0015] In addition, rapid temperature sensing combined with a shutdown mechanism prevents the compressor from being damaged due to abnormal temperature rise, reduces the risk of the air conditioner housing and electrical control components being affected by high temperatures, and improves the overall reliability and service life of the air conditioner. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the assembly of the U-shaped heat-conducting bracket and the top cover of this utility model; Figure 2 This is a schematic diagram of the structure of the U-shaped heat-conducting bracket of this utility model; Figure 3 This is an assembly diagram of the U-shaped heat-conducting bracket and temperature sensor of this utility model; Figure 4 This is a schematic diagram of another structural form of the U-shaped heat-conducting bracket of this utility model; Figure 5 This is a schematic diagram of the welding positioning components of the base plate of this utility model; Figure 6 This is a schematic diagram of the assembly of the U-shaped heat-conducting bracket and the housing of this utility model; Figure 7 This is a schematic diagram of the external structure of the compressor of this utility model; In the figure: 1. Housing; 2. Top cover; 3. U-shaped heat-conducting bracket; 4. Temperature sensor; 5. Base plate; 6. Clamping piece; 61. Bending part; 62. Second clamping part; 63. First clamping part; 7. Connecting part; 8. Pre-welded point recess; 9. Welding boss; 10. Bottom cover. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0018] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. The terms "upper," "lower," "front," "rear," "top," "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or part referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. It should be understood that such data can be interchanged where appropriate for the embodiments of this utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0019] The air conditioner compressor is the core power source of the refrigeration cycle. For example... Figure 7As shown, the compressor's external structure includes an external main assembly, which comprises a housing 1, an upper cover 2, and a lower cover 10, ensuring sealing and stable operation. Low-temperature, low-pressure refrigerant gas is drawn in through the suction pipe and compressed, then discharged as high-temperature, high-pressure gas from the exhaust pipe. The compressor's operation drives the refrigerant through a cycle of compression, condensation, expansion, and evaporation, achieving cooling or heating functions. In existing technologies, temperature sensors in compressor temperature monitoring schemes are typically located in the system's exhaust piping.

[0020] like Figures 1-3 As shown, the present application discloses an external structure of a compressor equipped with a temperature sensor, which also includes a U-shaped heat-conducting bracket 3 and a temperature sensor 4. The U-shaped heat-conducting bracket 3 can be made of a metal with good thermal conductivity, such as 304 stainless steel.

[0021] The U-shaped heat conduction bracket 3 includes a base plate 5 and clamping pieces 6 on both sides. Each clamping piece 6 has a connecting part 7 at the bottom that is connected to one side of the base plate 5. The clamping piece 6, the connecting part 7 and the base plate 5 are integrally formed. Temperature sensor 4 is secured within U-shaped heat-conducting bracket 3; The base plate 5 is welded to the external main body component.

[0022] Understandably, the shape of the clamping piece 6 is not limited, as long as it can clamp the temperature sensor 4.

[0023] like Figure 4 As shown, the clamping piece 6 is an L-shaped plate-like component, which includes a first clamping part 63 connected to the connecting part 7 and a second clamping part 62 away from the base plate 5. With this structure of the U-shaped heat-conducting bracket 3, during installation, the temperature sensor 4 is inserted from one end of the U-shaped heat-conducting bracket 3 along its length. Furthermore, the second clamping part 62 is an elastic member capable of tightly clamping the temperature sensor 4, while the first clamping part 63 is a rigid member.

[0024] Although in this embodiment, the temperature sensor 4 and the U-shaped heat-conducting bracket 3 form five surface contacts (one surface contact with the base plate 5, one surface contact with the first clamping part 63 on one side, and one surface contact with the second clamping part 62 on one side), the temperature conduction efficiency is not optimal. However, the rigid first clamping part 63 plays a major supporting role and will not deform due to long-term vibration.

[0025] As a preferred implementation method, such as Figure 3As shown, the clamping piece 6 is shaped to fit the outer shape of the temperature sensor 4. In this embodiment, the temperature sensor is cylindrical; therefore, the clamping piece 6 is an arc-shaped surface that fits the temperature sensor 4. Furthermore, both the clamping piece 6 and the connecting portion 7 are elastic; when the temperature sensor 4 is placed in the U-shaped heat-conducting bracket 3, the two clamping pieces 6 expand outward to clamp the temperature sensor 4, that is, the radius of the temperature sensor 4 is slightly larger than the maximum circular cross-sectional radius of the cavity inside the U-shaped heat-conducting bracket 3. Preferably, when the temperature sensor 4 is placed in the U-shaped heat-conducting bracket 3, the two clamping pieces 6 expand outward by a total of 0.1~2mm.

[0026] To optimize the structure of the U-shaped heat-conducting bracket 3, such as Figure 3 As shown, the clamping piece 6 has a bent portion 61 along the length of the temperature sensor 4, and the bent portion 61 is integrally formed with the clamping piece 6; the bent portion 61 is bent away from the temperature sensor 4, and the intersection of the bent portion 61 and the clamping piece 6 has an arc chamfer on the side closer to the temperature sensor 4.

[0027] In this U-shaped heat-conducting bracket 3 structure, during installation, the temperature sensor 4 is pressed down to open the bend 61 and the chamfer of the clamping piece 4, allowing the temperature sensor 4 to enter the cavity of the U-shaped heat-conducting bracket 3. The reverse bend 61 serves as an auxiliary positioning feature, enabling quick and accurate installation and ensuring that the temperature sensor 4 and the U-shaped heat-conducting bracket 3 are coaxial, thus avoiding increased contact thermal resistance due to misalignment.

[0028] Although in this embodiment, the temperature sensor 4 and the clamping plates 6 on both sides form surface contact, resulting in higher heat conduction efficiency and more accurate temperature identification due to the larger contact area, there is a risk of elastic deformation attenuation and decreased fit under long-term vibration conditions because both sides of the U-shaped heat-conducting bracket 3 are elastic components. However, it should be noted that within the normal service life, the U-shaped heat-conducting bracket 3 can still maintain a high degree of fit with the temperature sensor 4.

[0029] In this application, the U-shaped heat-conducting bracket 3 is welded to the base plate 5 of the external main component by spot welding, and spot welding positioning components are respectively provided at the corresponding positions of the external main component.

[0030] Normally, the U-shaped heat-conducting bracket 3 and the temperature sensor are mounted on the upper cover 2. However, if limitations such as installation space are considered, such as... Figure 6 As shown, the U-shaped heat-conducting bracket 3 and the temperature sensor can also be mounted on the housing 1.

[0031] Specifically, such as Figure 2 and Figure 5As shown, the base plate 5 has a pre-welding hole 8 on the side facing the temperature sensor 4, and a welding boss 9 (the boss shape can be square or hemispherical) on the side away from the temperature sensor for positioning the welding point. With the help of spot welding, the U-shaped heat-conducting bracket 3 is welded to the top cover 2 (or the shell 1).

[0032] By directly mounting the U-shaped heat-conducting bracket 3 onto the upper cover 2 (or housing 1), a direct heat conduction path is constructed: "compressor upper cover or housing (heating zone) → bracket welding part → clamping part → temperature sensor". The path length is compressed to ≤50mm (more than 90% shorter than the layout on the exhaust system side), breaking through the bottleneck of rapid temperature rise sensing under operating conditions. At the same time, the U-shaped heat-conducting bracket 3 not only firmly fixes the temperature sensor 4, ensuring stable position and reliable measurement results under high-frequency vibration environment, but also its base plate 5 increases the effective contact area between the temperature sensor 4 and the upper cover 2 (or housing 1). The efficient thermal conductivity of metal compensates for the loss of an extra layer of contact, thereby allowing heat conduction to be faster and smoother, ultimately improving the overall thermal conductivity and avoiding the air gap and thermal resistance problems that may occur when the temperature sensor 4 directly contacts the upper cover 2 (or housing 1).

[0033] The base plate 5 of the U-shaped heat-conducting bracket 3 is fixed by direct welding, replacing fastener connections. This not only ensures strong structural integrity and eliminates the risk of loosening, but also makes it suitable for the long-term high-frequency vibration conditions of the compressor. Moreover, this method eliminates assembly gaps, and compared to the "mechanical bracket + assembly gap" method, thermal resistance is still reduced by more than 40%, resulting in a more significant improvement in temperature response speed. In addition, the welding process is simpler, reducing the labor time per unit by 20% during mass production, eliminating the risk of poor assembly accuracy, and broadening its application range and installation adaptability.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of implementation of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and all such improvements and modifications should be covered within the protection scope of this utility model.

Claims

1. An external structure for a compressor equipped with a temperature sensor, comprising an external main body assembly, the external main body assembly including a housing (1) and a top cover (2), characterized in that, It also includes a U-shaped heat-conducting bracket (3) and a temperature sensor (4). The U-shaped heat-conducting bracket (3) includes a base plate (5) and clamping pieces (6) on both sides. Each clamping piece (6) has a connecting part (7) at its lower part that is connected to one side of the base plate (5). The clamping piece (6), the connecting part (7) and the base plate (5) are integrally formed. The temperature sensor (4) is fitted into the U-shaped heat-conducting bracket (3); The base plate (5) is welded to the external main body component.

2. The compressor external structure equipped with a temperature sensor according to claim 1, characterized in that, The clamping piece (6) is an L-shaped plate member, which includes a first clamping part (63) connected to the connecting part (7) and a second clamping part (62) away from the bottom plate (5).

3. The compressor external structure equipped with a temperature sensor according to claim 2, characterized in that, The second clamping part (62) is an elastic member, and the first clamping part (63) is a rigid member.

4. The compressor external structure equipped with a temperature sensor according to claim 1, characterized in that, The clamping piece (6) is shaped to fit the shape of the temperature sensor (4).

5. The compressor external structure equipped with a temperature sensor according to claim 4, characterized in that, The clamping piece (6) is an arc surface that fits the temperature sensor (4).

6. The compressor external structure equipped with a temperature sensor according to claim 4, characterized in that, Both the clamping piece (6) and the connecting part (7) are elastic; when the temperature sensor (4) is placed in the U-shaped heat-conducting bracket (3), the two clamping pieces (6) expand outward to clamp the temperature sensor (4).

7. The compressor external structure equipped with a temperature sensor according to claim 6, characterized in that, When the temperature sensor (4) is placed on the U-shaped heat-conducting bracket (3), the two clamping pieces (6) expand outward by a total of 0.1~2mm.

8. The compressor external structure equipped with a temperature sensor according to claim 1, characterized in that, The clamping piece (6) has a bent portion (61) along the length direction of the temperature sensor (4), and the bent portion (61) is integrally formed with the clamping piece (6); the bent portion (61) is bent away from the temperature sensor (4), and the intersection of the bent portion (61) and the clamping piece (6) has a rounded chamfer on the side closer to the temperature sensor (4).

9. The compressor external structure equipped with a temperature sensor according to claim 1, characterized in that, The base plate (5) and the corresponding positions of the external main body components are respectively provided with spot welding positioning components.

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