Detection device and compressor

Abstract

The utility model provides a detection device and a compressor, the detection device comprises a housing, a transmission assembly and a detection assembly, the housing encloses to form a first installation cavity communicated with the interior of the compressor and a second installation cavity sleeved outside the first installation cavity; the transmission assembly comprises a driving part and a transmission part connected with the driving part, and the transmission part is arranged in the second mounting cavity; the detection assembly is arranged in the first mounting cavity, is connected with the transmission part and is used for detecting and feeding back liquid level information to the display equipment; the driving part drives the transmission part to drive the detection assembly to move in the height direction of the first installation cavity. According to the compressor, the transmission assembly and the detection assembly are arranged, the driving part drives the transmission part to drive the detection assembly to move so as to detect the liquid level information, the liquid level information is fed back to the external display equipment, and therefore the liquid level height in the compressor is detected and fed back in real time, and detection is convenient and fast; and meanwhile, the height of the detection assembly is adjusted in real time, and the liquid level height conditions of the liquid refrigerants with different heights according to different detection requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a detection device and a compressor. Background Art

[0002] With the development trend of miniaturization and high power requirements of compressors, the size of compressors is getting smaller and smaller under the same cooling capacity, but the amount of refrigerant and refrigeration oil remains unchanged or increases, resulting in a continuous increase in the liquid level inside the compressor. The rise in liquid level will cause the motor of the compressor to contact the refrigerant. Liquid refrigerant has strong conductivity and has a certain impact on the insulation resistance of the motor. As the contact with the motor parts increases, the leakage current increases significantly, and the leakage current value significantly exceeds the standard, which places higher requirements on the insulation withstand voltage of the motor. Therefore, it is necessary to detect the liquid level height inside the compressor during the development and design stage, but the compressor is a closed high-pressure and high-temperature environment, and there is high-pressure gas flow. The internal environment is relatively harsh, and ordinary liquid level detection sensors cannot be used inside the compressor. Utility Model Content

[0003] The embodiments of the utility model provide a detection device and a compressor, so as to realize real-time detection and feedback of the liquid level height inside the compressor, and the structure is simple and reliable.

[0004] The utility model provides a detection device, which includes:

[0005] The housing encloses a first installation cavity communicating with the interior of the compressor and a second installation cavity sleeved outside the first installation cavity;

[0006] A transmission assembly, comprising a driving part and a transmission part connected to the driving part, wherein the transmission part is arranged in the second installation cavity;

[0007] A detection component, disposed in the first installation cavity and connected to the transmission part, for detecting and feeding back liquid level information to a display device;

[0008] The driving part drives the transmission part to drive the detection component to move along the height direction of the first installation cavity.

[0009] In the detection device provided by the utility model, the detection component includes a resistance sensor and a float located below the resistance sensor, and one side of the resistance sensor is fixedly connected to the transmission part; wherein the liquid refrigerant suspends the float so that the float squeezes the resistance sensor.

[0010] In the detection device provided by the utility model, the lower end of the resistance sensor is recessed inward to form a groove, and the groove is an arc structure.

[0011] In the detection device provided by the utility model, the transmission part includes an upper gear, a lower gear and a conveyor belt connected to the driving part, the upper gear and the lower gear are respectively fixed at the upper end and the lower end of the second mounting cavity, and the conveyor belt is meshed and connected with the upper gear and the lower gear along the circumference of the second mounting cavity.

[0012] In the detection device provided by the utility model, the driving part includes a base, a connecting shaft and a motor, the base is fixedly connected to the motor and the housing, and the connecting shaft is respectively connected to the motor and the upper gear; wherein, the motor is started to drive the connecting shaft to rotate, thereby driving the upper gear to rotate.

[0013] In the detection device provided by the utility model, the driving part further comprises a fixed arm, the fixed arm is located at a side of the base connected to the shell, and is extended from one side of the base in a direction away from the shell.

[0014] In the detection device provided by the utility model, the shell includes a first shell, the first shell encloses the first installation cavity, a avoidance opening is provided along the height direction of the first shell, and one end of the detection component passes through the avoidance opening to be connected to the transmission part.

[0015] In the detection device provided by the utility model, the shell also includes a second shell, the second shell encloses to form the second installation cavity, the inner side wall of the second shell is provided with a protruding column facing inward, the first shell is provided with a through hole, and the protruding column is plugged and fixed to the through hole.

[0016] In the detection device provided by the utility model, the second shell includes a through opening, and the through opening is arranged at two ends of the middle part of the second shell, and is used to connect the outside with the first installation cavity.

[0017] The utility model also provides a compressor, which comprises:

[0018] case;

[0019] The detection device is any one of the detection devices described above, and the detection device is fixed inside the shell.

[0020] The utility model provides a detection device and a compressor, the detection device comprises a shell, a transmission component and a detection component, the shell encloses a first installation cavity connected to the interior of the compressor and a second installation cavity sleeved on the outside of the first installation cavity; the transmission component comprises a driving part and a transmission part connected to the driving part, the transmission part is arranged in the second installation cavity; the detection component is arranged in the first installation cavity and connected to the transmission part, and is used to detect and feed back liquid level information to a display device; wherein the driving part drives the transmission part to drive the detection component to move along the height direction of the first installation cavity. The present application sets the transmission component and the detection component, the transmission part is connected to the detection component, and the driving part of the transmission component drives the transmission part to drive the detection component to move along the height direction of the first installation cavity, so that the detection component detects the liquid level information of the liquid refrigerant and feeds back the liquid level information to an external display device, thereby realizing a high temperature and high pressure environment inside the compressor, and real-time detection and feedback of the liquid level height inside the compressor. The detection is convenient, and the structure of the detection device is simple and reliable; at the same time, the height of the detection component can be adjusted in real time to achieve the liquid level height of the liquid refrigerant at different heights according to different detection requirements, and the detection device has high versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural diagram of the detection device in the embodiment of the utility model;

[0023] Figure 2 It is a cross-sectional view of the detection device in the embodiment of the utility model;

[0024] Figure 3 Another cross-sectional view of the detection device in the embodiment of the utility model;

[0025] Figure 4 It is a structural diagram of the detection device in the embodiment of the utility model;

[0026] Figure 5 It is a partial enlarged view of the detection device in the embodiment of the utility model;

[0027] Figure 6 It is a top cross-sectional view of the housing in the embodiment of the utility model;

[0028] Figure 7It is a front view of the detection device in the embodiment of the utility model;

[0029] Figure 8 It is a side view of the detection device in the embodiment of the utility model;

[0030] Fig. 9 A top view of the detection device in the embodiment of the utility model;

[0031] Fig.10 It is a cross-sectional view of a compressor in an embodiment of the utility model;

[0032] Fig.11 It is a circuit diagram of a transmission circuit in an embodiment of the utility model;

[0033] Fig.12 A circuit diagram of a detection circuit in an embodiment of the utility model;

[0034] The reference numerals in the figures are:

[0035] 1. compressor; 10. detection device; 20. shell; 100. outer shell; 110. first installation cavity; 120. second installation cavity; 130. first outer shell; 131. avoidance opening; 132. through hole; 140. second outer shell; 141. opening; 200. transmission assembly; 210. drive unit; 211. base; 212. connecting shaft; 213. motor; 214. fixed arm; 220. transmission unit; 221. upper gear; 222. lower gear; 223. conveyor belt; 300. detection assembly; 310. resistance sensor; 311. groove; 320. float. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Now, in conjunction with the accompanying drawings, a preferred embodiment of the present utility model is described in detail.

[0037] Reference Figures 1 to 10 As shown, it shows an embodiment of the detection device 10 and the compressor 1 of the utility model. The detection device 10 includes a housing 100, a transmission assembly 200 and a detection assembly 300. The housing 100 encloses a first installation cavity 110 connected to the inside of the compressor 1 and a second installation cavity 120 sleeved outside the first installation cavity 110; the transmission assembly 200 includes a driving part 210 and a transmission part 220 connected to the driving part 210, and the transmission part 220 is arranged in the second installation cavity 120; the detection assembly 300 is arranged in the first installation cavity 110 and connected to the transmission part 220, and is used to detect and feed back liquid level information to the display device; wherein, the driving part 210 drives the transmission part 220 to drive the detection assembly 300 to move along the height direction of the first installation cavity 110.

[0038] Specifically, the detection device 10 is used to detect the liquid level of the liquid refrigerant inside the compressor 1, and feed back the liquid level information of the liquid level to a display device located outside the compressor 1. The detection device 10 is fixed inside the compressor 1. The detection device 10 includes a housing 100, a transmission assembly 200, and a detection assembly 300; the housing 100 encloses the first installation cavity 110 and the second installation cavity 120, and the second installation cavity 120 is sleeved outside the first installation cavity 110, that is, the first installation cavity 110 is located inside the second installation cavity 120, and the first installation cavity 110 is connected to the inside of the compressor 1, so that the liquid refrigerant inside the compressor 1 can flow into the first installation cavity 110.

[0039] The transmission assembly 200 includes a driving part 210 and a transmission part 220, wherein the driving part 210 is located outside the housing 100 and is used to drive the transmission part 220 to transmit; the transmission part 220 is arranged in the second installation cavity 120 along the circumference of the second installation cavity 120, and the transmission part 220 is used to connect with the detection assembly 300 and the driving part 210, so that the driving part 210 drives the transmission part 220 to transmit, and then the transmission part 220 drives the detection assembly 300 to move, so that the detection assembly 300 can detect the liquid level height inside the compressor 1 at different positions; the detection assembly 300 is arranged in the first installation cavity 110 and is connected to the transmission part 220, and the detection assembly 300 is electrically connected to the display device outside the compressor 1, so that the liquid level information of the liquid refrigerant inside the compressor 1 detected by the detection assembly 300 is fed back to the display device, thereby realizing real-time detection and feedback of the liquid level height information of the liquid refrigerant inside the compressor 1.

[0040] Among them, the driving part 210 is started, and the driving part 210 drives the transmission part 220 to transmit, and the transmission part 220 drives the detection component 300 to move along the height direction of the first installation cavity 110. The detection component 300 can sense the liquid refrigerant at different positions to obtain the liquid level height of the liquid refrigerant and feed it back to the external display device.

[0041] The present application sets the transmission component 200 and the detection component 300, the transmission part 220 is connected to the detection component 300, and the driving part 210 of the transmission component 200 drives the transmission part 220 to drive the detection component 300 to move along the height direction of the first installation cavity 110, so that the detection component 300 detects the liquid level information of the liquid refrigerant and feeds back the liquid level information to an external display device, thereby realizing a high temperature and high pressure environment inside the compressor 1, and real-time detection and feedback of the liquid level height inside the compressor 1, convenient detection, and the structure of the detection device 10 is simple and reliable; at the same time, the height of the detection component 300 can be adjusted in real time to achieve the liquid level height of the liquid refrigerant at different heights according to different detection requirements, and the detection device 10 has high versatility.

[0042] In one embodiment, referring to Figures 1 to 3 , Fig.10 As shown, the detection component 300 includes a resistance sensor 310 and a float 320 located below the resistance sensor 310 , and one side of the resistance sensor 310 is fixedly connected to the transmission part 220 ; wherein, the liquid refrigerant suspends the float 320 so that the float 320 squeezes the resistance sensor 310 . Specifically, the detection component 300 is used to detect the liquid level of the liquid refrigerant inside the compressor 1 and feed back the liquid level information to the display device outside the compressor 1; the detection component 300 includes a resistance sensor 310 and a float 320, and the resistance sensor 310 will produce a change in resistance value when subjected to external force, so that it can be judged whether the liquid refrigerant has reached the height of the resistance sensor 310 according to the change in resistance value, and then the liquid level information is obtained; if the resistance sensor 310 has a change in resistance value, it indicates that the liquid level of the liquid refrigerant has reached the height of the resistance sensor 310; if the resistance sensor 310 has no change in resistance value, it indicates that the liquid level of the liquid refrigerant has not reached the height of the resistance sensor 310; the float 320 is a hollow float 320, and the float 320 is located below the resistance sensor 310, so that the liquid refrigerant can suspend the float 320 and squeeze the resistance sensor 310.

[0043] When the float 320 rises according to the liquid level of the liquid refrigerant inside the compressor 1 and contacts the resistance sensor 310, the float 320 will give the resistance sensor 310 a certain pressure, thereby squeezing the resistance strain gauge of the resistance sensor 310. The resistance strain gauge has a metal strain effect and produces mechanical deformation under the action of external force, thereby changing the resistance value of the resistance sensor 310. When the resistance value changes, it can be known that the liquid level of the liquid refrigerant has reached the set height, thereby detecting the liquid level information of the liquid refrigerant inside the compressor 1. The detection component 300 has a simple structure and low production cost.

[0044] In particular, a feedback line is connected to the upper end of the resistance sensor 310, and the other end of the feedback line is connected to a display device outside the compressor 1. The resistance value of the resistance sensor 310 feeds back resistance information to an external resistance detection instrument through the feedback line and the wiring terminals on the upper cover of the compressor 1, thereby realizing real-time feedback of the liquid level information to the display device outside the compressor 1. The structure is simple and reliable, and the detection is convenient.

[0045] In a specific embodiment, refer to Figures 1 to 3 As shown, the lower end of the resistance sensor 310 is recessed inward to form a groove 311, and the groove 311 is a circular arc structure. Specifically, one side of the resistance sensor 310 is fixedly connected to the transmission part 220, and the float 320 is located below the resistance sensor 310. The float 320 rises according to the liquid level of the liquid refrigerant inside the compressor 1 and contacts the resistance sensor 310, thereby squeezing the resistance sensor 310 to change the resistance value of the resistance sensor 310. The float 320 rises and abuts against the lower end of the resistance sensor 310, and the lower end of the resistance sensor 310 is recessed toward the center of the resistance sensor 310 to form the groove 311, and the groove 311 is set to a circular arc structure. The structure of the groove 311 is adapted to the structure of the float 320, so that the groove 311 fits the float 320. When the float 320 rises with the liquid level of the liquid refrigerant, the float 320 is close to the lower end of the resistance sensor 310 and squeezes the resistance sensor 310. The float 320 and the groove 311 are fitted and abutted, thereby increasing the force area of ​​the float 320 and the resistance sensor 310, and improving the squeezing force of the float 320 squeezing the resistance sensor 310, ensuring that the resistance sensor 310 produces a change in resistance value, and improving the detection accuracy of the detection device 10.

[0046] In one embodiment, referring to Figures 1 to 3As shown, the transmission part 220 includes an upper gear 221, a lower gear 222 and a conveyor belt 223 connected to the driving part 210, the upper gear 221 and the lower gear 222 are respectively fixed at the upper end and the lower end of the second mounting cavity 120, and the conveyor belt 223 is meshed and connected with the upper gear 221 and the lower gear 222 along the circumference of the second mounting cavity 120. Specifically, the transmission part 220 is used to drive the detection component 300 to move along the height direction of the first installation cavity 110, and the transmission part 220 is connected to the driving part 210, and the driving part 210 drives the transmission part 220 to perform transmission movement; the transmission part 220 includes an upper gear 221, a lower gear 222 and a conveyor belt 223, the upper gear 221 and the lower gear 222 are respectively fixed at the upper end and the lower end of the second installation cavity 120, and the conveyor belt 223 is meshed and connected with the upper gear 221 and the lower gear 222 along the circumference of the second installation cavity 120, and the transmission part 220 is arranged near the edge of the second installation cavity 120, and the first installation cavity 110 is provided in the middle of the second installation cavity 120, that is, the internal space enclosed by the transmission part is the first installation cavity 1 10, the first installation cavity 110 is used to install the detection assembly 300; wherein, the upper gear 221 is connected to the driving part 210, so the driving part 210 is started, the driving part 210 drives the upper gear 221 to rotate, and the upper gear 221 drives the conveyor belt 223 to transmit, thereby driving the lower gear 222 to rotate; one side of the conveyor belt 223 is fixedly connected to the resistance sensor 310, so the conveyor belt 223 performs transmission movement to drive the resistance sensor 310 to move along the height direction of the first installation cavity 110, and then adjust the height of the resistance sensor 310 to detect the liquid level height of the liquid refrigerant inside the compressor 1 at different heights, and adjust the detection height of the detection device 10 in real time, thereby improving the versatility of the detection device 10. The transmission part 220 has a simple structure and low production cost.

[0047] In a specific embodiment, refer to Figures 1 to 3As shown, the driving part 210 includes a base 211, a connecting shaft 212 and a motor 213, wherein the base 211 is fixedly connected to the motor 213 and the housing 100, and the connecting shaft 212 is respectively connected to the motor 213 and the upper gear 221; wherein, the motor 213 is started to drive the connecting shaft 212 to rotate, thereby driving the upper gear 221 to rotate. Specifically, the driving part 210 is used to drive the transmission part 220 to transmit, thereby adjusting the detection height of the resistance sensor 310 to detect the liquid level of the liquid refrigerant in real time. The driving unit 210 includes a base 211, a connecting shaft 212 and a motor 213. The driving unit 210 is arranged outside the housing 100, and the driving unit 210 is fixedly connected to the housing 100, and the driving unit 210 is fixedly arranged at the upper end of the housing 100. The base 211 is used to carry and fix the motor 213 to the outside of the housing 100. The two ends of the base 211 respectively fix the motor 213 and the housing 100. The motor 213 is connected to the connecting shaft 212, and the other end of the connecting shaft 212 is connected to the upper gear 221. The motor 213 is started to rotate the connecting shaft 212, thereby driving the upper gear 221 to rotate, thereby realizing the transmission of the conveyor belt 223, and the resistance sensor 310 moves following the conveyor belt 223. The driving unit 210 has a simple structure, and the motor 213 is fixed to the housing 100 via the base 211 , thereby improving the fixation of the driving unit 210 and the housing 100 and improving the structural stability of the detection device 10 .

[0048] In one embodiment, referring to Figure 1 to Figure 2 , Figure 4 , Figure 5 , Figure 7 , Fig. 9As shown, the driving part 210 further includes a fixed arm 214, which is located at a side where the base 211 is connected to the housing 100, and is extended from one side of the base 211 in a direction away from the housing 100. Specifically, the base 211 is located between the motor 213 and the housing 100, and the driving part 210 further includes a fixed arm 214, which is located at a side where the base 211 is connected to the housing 100, and is extended from one side of the base 211 in a direction away from the housing 100, the extension direction of the fixed arm 214 intersects with the extension direction of the base 211, and the extension direction of the base 211 refers to the direction of connecting the housing 100 and the motor 213, and the fixed arm 214 extends toward both sides of the base 211, and the fixed arm 214 is used to be fixedly connected with the housing 20 of the compressor 1, so as to ensure that the detection device 10 can be fixed inside the compressor 1, so as to improve the stability of the detection device 10 being fixed inside the compressor 1. In particular, the shape of the side of the fixing arm 214 facing the shell 20 of the compressor 1 is adapted to the shape of the shell 20 of the compressor 1, so that the fixing arm 214 is tightly attached to the shell 20 of the compressor 1, thereby improving the fixation of the fixing arm 214 to the compressor 1.

[0049] In a specific embodiment, refer to Figures 1 to 6As shown, the housing 100 includes a first housing 130, and the first housing 130 encloses the first installation cavity 110. A avoidance opening 131 is provided along the height direction of the first housing 130, and one end of the detection component 300 passes through the avoidance opening 131 and is connected to the transmission part 220. Specifically, the housing 100 is used to carry and fix the detection component 300 and the transmission part 220. The housing 100 includes a first housing 130, and the first housing 130 encloses the first installation cavity 110. The detection component 300 is arranged in the first installation cavity 110, and the transmission part 220 is arranged in the second installation cavity 120. The second installation cavity 120 is located outside the first housing 130. Therefore, in order to ensure that the detection component 300 can move along the height direction of the first installation cavity 110, the avoidance opening 131 is provided on the first housing 130, and the avoidance opening 131 is formed by one end of the first housing 130 along the first housing. 130 passes through the height direction of the first shell 130 to the other end of the first installation cavity 110, so that one side of the first installation cavity 110 is connected with the second installation cavity 120, and one end of the detection component 300 passes through the avoidance opening 131 and is connected with the transmission part 220 located in the second installation cavity 120. Therefore, when the transmission part 220 performs transmission movement along the height direction of the second installation cavity 120, it can drive the detection component 300 to move along the height direction of the first installation cavity 110, thereby ensuring the height adjustment of the detection component 300, so as to realize the detection of the liquid level height of the liquid refrigerant inside the compressor 1 at different heights, and ensure the structural stability of the detection device 10.

[0050] In particular, the detection component 300 includes the resistance sensor 310 and the float 320, both of which are located in the first installation cavity 110, the resistance sensor 310 is a cylindrical structure, and the float 320 is a spherical structure. In order to ensure that the structure of the first installation cavity 110 is compatible with the structures of the float 320 and the resistance sensor 310, the first shell 130 is set to a hollow cylindrical structure in the middle, and a through-hole is provided on one side of the first shell 130. The avoidance openings 131 at the upper and lower ends of the first shell 130 overlook the first shell 130. The first shell 130 is a "C"-shaped structure. The avoidance openings 131 make way for the movement of the connection between the resistance sensor 310 and the transmission part 220, so that the resistance sensor 310 is fixedly connected to the transmission part 220. The resistance sensor 310 can move up and down along the height direction of the first shell 130, so that the height of the resistance sensor 310 can be adjusted, and the liquid level height inside the compressor 1 can be detected in real time.

[0051] In one embodiment, referring to Figures 1 to 8 As shown, the housing 100 further includes a second housing 140 , which encloses the second mounting cavity 120 , and the inner side wall of the second housing 140 is provided with a protruding column facing inward, and the first housing 130 is provided with a through hole 132 , and the protruding column is plugged and fixed to the through hole 132 . Specifically, the shell 100 also includes a second shell 140, which encloses and forms the second installation cavity 120. The second shell 140 is sleeved on the outside of the first shell 130, and the second installation cavity 120 is formed between the second shell 140 and the first shell 130. The transmission part 220 is fixed in the second installation cavity 120, and the detection component 300 is arranged in the first installation cavity 110, so as to separate the transmission part 220 and the detection component 300. The detection component 300 and the transmission component 200 do not affect each other, thereby improving the anti-interference ability of the detection device 10, and the detection accuracy of the detection component 300 is higher; the inner side wall of the second shell 140 is provided with a protruding column facing the direction of the first shell 130, and the first shell 130 is provided with a through hole 132. The protruding column is inserted into the through hole 132, so that the second shell 140 and the first shell 130 are fixedly connected. The fixing method is simple, improves the assembly efficiency of the detection device 10, and has low production cost.

[0052] In particular, the second shell 140 is a two-section foldable structure, and the periphery of the second shell 140 is flat and the middle is a hollow cylindrical shape. The upper gear 221 and the lower gear 222 are fixedly installed at the upper and lower ends of the interior of the second shell 140, and the conveyor belt 223 is arranged on the periphery of the second shell 140. The first shell 130 is arranged in the middle of the second shell 140. Therefore, the structure of the second shell 140 is adapted to the structural parts located in the second installation cavity 120, so that the structure of the detection device 10 has a high degree of structural integration.

[0053] When assembling the detection device 10, since the second housing 140 is a two-section structure, a section of the second housing 140 is placed first, and the conveyor belt 223, the upper gear 221, the lower gear 222 and the first housing 130 are assembled inside the second housing 140, wherein the detection assembly 300 (the detection assembly 300 includes the resistance sensor 310 and the float 320) has been pre-installed inside the first housing 130; then the resistance sensor 310 and the conveyor belt 223 are fixedly connected, and finally another section of the second housing 140 is installed; at the same time, the upper gear 221 is fixedly connected to the connecting shaft 212, and the second housing 140 is fixedly connected to the base 211. This assembly method is simple, and the detection device 10 has a simple structure and is easy to produce, and can detect the liquid level height inside the compressor 1 at different heights in real time.

[0054] In a specific embodiment, refer to Figures 1 to 8 As shown, the second shell 140 includes a through opening 141, and the through opening 141 is provided at both ends of the middle part of the second shell 140, so as to connect the outside with the first installation cavity 110. Specifically, the second shell 140 includes the through opening 141, and the second shell 140 is divided into a periphery and a middle part. The second installation cavity 120 formed at the periphery of the second shell 140 is used to fix the transmission part 220, and the second installation cavity 120 formed in the middle part of the second shell 140 is used to fix and connect the first shell 130 equipped with the detection component 300; the through opening 141 is provided at both ends of the middle part of the second shell 140, that is, the through opening 141 is located at the upper end and the lower end of the middle part of the second shell 140, so as to connect the first installation cavity 110 with the outside, so as to The liquid refrigerant inside the compressor 1 from the outside can enter the second installation cavity 120 through the through port 141, and then enter the first installation cavity 110 through the avoidance port 131 and / or the openings at both ends of the first shell 130. At this time, the liquid level of the liquid refrigerant in the first installation cavity 110 is consistent with the liquid level of the liquid refrigerant inside the compressor 1, so that the liquid refrigerant contacts the detection component 300 in the first installation cavity 110, so that the detection component 300 detects and feeds back the liquid level information to the display device outside the compressor 1.

[0055] Exemplarily, when the float 320 rises according to the liquid level inside the compressor 1 and contacts the resistance sensor 310, the float 320 will give the resistance sensor 310 a certain pressure, squeezing the resistance strain gauge of the resistance sensor 310. The resistance strain gauge has a metal strain effect and produces mechanical deformation under the action of external force, thereby changing the resistance value; the resistance information is fed back to the external resistance detection instrument through the feedback line and the wiring terminal of the upper cover of the compressor 1. When the resistance changes, it can be known that the liquid level has reached the set height. The motor 213 of the drive unit 210 is started externally to rotate the transmission belt. After the height of the resistance sensor 310 is moved up, the resistance condition is continued to be detected, and this reciprocating cycle is performed until the resistance value of the resistance sensor 310 remains unchanged, that is, the highest liquid level inside the compressor 1 is detected.

[0056] In particular, refer to Fig.11 and Fig.12 As shown, the detection device 10 is divided into two independent circuits, one is a transmission circuit and the other is a detection circuit. The transmission circuit is used to drive the motor 213 of the driving part 210; the detection circuit is used to feed back the resistance value information of the resistance sensor 310. The circuit structure of the detection device 10 is simple and reliable, and will not be affected by the high temperature, high pressure and strong magnetic field conditions inside the compressor 1, thereby improving the anti-interference ability of the detection device 10.

[0057] Reference Fig.10 As shown, this embodiment also provides a compressor 1, which includes a shell 20 and a detection device 10. The detection device 10 can adopt any detection device 10 provided by the utility model. Since the previous specification has already made a detailed introduction to the specific structure and working principle of the detection device 10, for the sake of brevity of the specification, it will not be repeated here. The detection device 10 is fixedly arranged inside the shell 20.

[0058] Specifically, the compressor 1 includes a shell 20 and a detection device 10. The detection device 10 is fixed inside the shell 20 and is located on one side of the shell 20. The user can fix it at different heights of the inner circle of the shell 20 according to needs. The feedback line of the detection device 10 is transmitted to the outside through the terminal on the upper cover of the compressor 1. Through the external collection terminal, the liquid level information inside the compressor 1 is detected and judged, so as to achieve the effect of real-time confirmation of the liquid level situation inside the compressor 1.

[0059] The compressor 1 in this embodiment adopts the detection device 10 provided by the utility model. The detection device 10 is suitable for the high temperature and high pressure environment inside the compressor 1, can detect and feedback the liquid level height inside the compressor 1 in real time, and can directly collect the liquid level data inside the compressor 1 from the outside, and has the advantages of being simple, reliable and convenient for detection; at the same time, the detection device 10 can adjust the height of the detection component 300 connected and fixed to the transmission part 220 in real time from the outside, so as to achieve the effect of testing liquid levels at different heights, and has high versatility.

[0060] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A detection device, characterized in that: include: A housing encloses a first installation cavity communicating with the interior of the compressor and a second installation cavity sleeved outside the first installation cavity; A transmission assembly, comprising a driving part and a transmission part connected to the driving part, wherein the transmission part is arranged in the second installation cavity; A detection component, disposed in the first installation cavity and connected to the transmission part, for detecting and feeding back liquid level information to a display device; The driving part drives the transmission part to drive the detection component to move along the height direction of the first installation cavity.

2. The detection device according to claim 1, characterized in that: The detection component includes a resistance sensor and a float located below the resistance sensor, and one side of the resistance sensor is fixedly connected to the transmission part; wherein the liquid refrigerant suspends the float so that the float squeezes the resistance sensor.

3. The detection device according to claim 2, characterized in that: The lower end of the resistance sensor is sunken inward to form a groove, and the groove is an arc structure.

4. The detection device according to claim 1, characterized in that: The transmission part includes an upper gear, a lower gear and a conveyor belt connected to the driving part, the upper gear and the lower gear are respectively fixed at the upper end and the lower end of the second mounting cavity, and the conveyor belt meshes and connects the upper gear and the lower gear along the circumference of the second mounting cavity.

5. The detection device according to claim 4, characterized in that: The driving part includes a base, a connecting shaft and a motor, wherein the base is fixedly connected to the motor and the housing, and the connecting shaft is respectively connected to the motor and the upper gear; wherein the motor is started to drive the connecting shaft to rotate, thereby driving the upper gear to rotate.

6. The detection device according to claim 5, characterized in that: The driving part further includes a fixing arm, which is located at a side of the base connected to the shell and is extended from one side of the base toward a direction away from the shell.

7. The detection device according to claim 1, characterized in that: The housing comprises a first housing, the first housing encloses and forms the first installation cavity, a clearance opening is provided along the height direction of the first housing, and one end of the detection component passes through the clearance opening and is connected to the transmission part.

8. The detection device according to claim 7, characterized in that: The shell also includes a second shell, the second shell encloses the second installation cavity, the inner side wall of the second shell is provided with a protruding column facing inward, the first shell is provided with a through hole, and the protruding column is plugged and fixed to the through hole.

9. The detection device according to claim 8, characterized in that: The second shell includes a through opening, which is arranged at two ends of the middle part of the second shell and is used to connect the outside with the first installation cavity.

10. A compressor, characterized in that: include: case; A detection device, wherein the detection device is the detection device according to any one of claims 1 to 9, and the detection device is fixedly arranged inside the shell.

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