Oil level self-protection and detection device of compressor

Abstract

Relates to the field of compressors, and discloses an oil level self-protection and detection device of a compressor, which comprises a communication device, an oil level self-protection device and a detection device, the detection device is arranged on one side of the communicating device, communicates with the compressor shell and is used for detecting the oil level in the compressor shell; the wiring unit is arranged on the detection device and is electrically connected with an external alarm; the adjusting unit is adjustably arranged in the detection device, communicated with the wiring unit and used for controlling a switch of the alarm. When the refrigeration oil level in the compressor shell is too high or too low, the compressor stops running, and the alarm lamp is turned on; and when the oil in the compressor shell returns to the normal range, the self-protection and alarm device is reset, the compressor normally operates, and the alarm lamp is turned off.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, and specifically relates to an oil level self-protection and detection device for a compressor. Background Art

[0002] As the heart of a refrigeration system, the quality of a compressor directly determines the quality of a refrigeration device. Refrigerant oil plays a lubricating role during the high-speed operation of the compressor to reduce the running friction and wear of the compressor and extend the service life of the compressor. Therefore, refrigerant oil is an indispensable part of the compressor.

[0003] During the circulation of the refrigeration system, the refrigerant will carry some refrigerant oil. Therefore, generally, a refrigeration system will have an oil return design to ensure that the carried refrigerant oil can return to the compressor for recycling and prevent the compressor from being damaged due to lack of oil.

[0004] Existing equipment has the following disadvantages: when the oil return device fails or the oil return efficiency is low, it cannot be observed from the outside. At this time, if the compressor continues to operate, it will be damaged; when the oil level in the compressor is too high, the exhaust oil injection volume of the compressor will increase, which will be carried to and attached to the surface of the heat exchanger in the refrigeration system, hindering heat exchange and reducing the refrigeration efficiency of the system. In severe cases, it may block the refrigeration cycle. Existing compressors do not have such a monitoring or protection mechanism.

[0005] Therefore, the present application now proposes an oil level self-protection and detection device for a compressor to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide an oil level self-protection and detection device for a compressor to solve the problem that existing compressors do not have such a monitoring or protection mechanism.

[0007] To achieve the above purpose, the utility model provides the following technical solution: an oil level self-protection and detection device for a compressor, including:

[0008] A communication device, arranged on one side of the compressor housing;

[0009] A detection device, arranged on one side of the communication device and communicating with the compressor housing, for detecting the oil level inside the compressor housing;

[0010] A wiring unit, arranged on the detection device and electrically connected to an external alarm;

[0011] An adjustment unit, adjustably arranged inside the detection device, communicating with the wiring unit for controlling the switch of the alarm.

[0012] Among them, the detection device includes a first guide groove and a second guide groove fixed on one side of the first guide groove and communicating with the first guide groove, and the second guide groove is communicated with the compressor housing through a communication device.

[0013] Among them, the wiring unit includes a first terminal fixed at the upper end of the second guide groove, a second terminal fixed at the lower end of the second guide groove, a third terminal fixed at the upper end of the first guide groove, a fourth terminal fixed at the lower end of the first guide groove, and a fifth terminal fixed in the middle of the first guide groove. The adjustment unit is electrically connected to the first terminal, the second terminal, the third terminal, the fourth terminal, and the fifth terminal.

[0014] Among them, a support unit for supporting the adjustment unit is arranged inside the first guide groove and the second guide groove;

[0015] The support unit includes a first elastic member fixed at the inner top of the second guide groove and connected to the first terminal, a second elastic member fixed at the inner bottom of the second guide groove and connected to the second terminal, a third elastic member fixed at the inner top of the first guide groove and connected to the third terminal, and a fourth elastic member fixed at the inner bottom of the first guide groove and connected to the fourth terminal. The adjustment unit is located between the first elastic member and the second elastic member, and the adjustment unit is located between the third elastic member and the fourth elastic member.

[0016] Among them, the adjustment unit includes a first float ball located between the first elastic member and the second elastic member and a second float ball located between the third elastic member and the fourth elastic member. The second float ball is connected to the fifth terminal through a connecting wire, and the first float ball abuts against the first elastic member and the second elastic member.

[0017] Among them, the communication device includes a first connecting pipe fixed at the upper part of the compressor housing and communicating with the second guide groove and a second connecting pipe fixed at the lower part of the compressor housing and communicating with the second guide groove.

[0018] Compared with the prior art, the beneficial effects of the present utility model are:

[0019] The detection device of the utility model is connected with the compressor casing, and can monitor the oil level inside the compressor casing in real time. The connecting device is used to connect with the compressor casing, balance the pressure difference, and ensure that the oil level height inside the compressor casing is consistent with the oil level height inside the detection device. The adjusting unit moves up and down according to the oil level height inside the detection device, and then when the oil level inside the compressor casing is too high or too low, the adjusting unit will be connected with the wiring unit, and then the alarm will be turned on to remind the staff of the abnormal oil level inside the compressor. By setting the device, the self-protection and alarm device of the compressor oil level being too low or too high can disconnect the power supply of the compressor to stop the compressor from running when the compressor is short of oil to avoid the compressor from being worn and damaged by continuing to run due to lack of oil, and send out an alarm to facilitate manual investigation of the cause of the fault. When the oil level of the compressor returns to normal, the alarm will be automatically lifted and the operation of the compressor will return to normal. When the refrigeration oil level inside the compressor casing is too high or too low, the compressor stops running and the alarm light is on; when the oil inside the compressor casing returns to within the normal range, the self-protection and alarm device is reset, the compressor runs normally, and the alarm light is off. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the main structure in one embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of a cross-section structure of an embodiment of the utility model;

[0022] Figure 3 This is a structural schematic diagram of the oil level inside the compressor housing and the position of the float in one embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure when the oil level is at the highest point in one embodiment of the utility model;

[0024] Figure 5 This is a structural schematic diagram of an embodiment of the utility model when the oil level is at the lowest point;

[0025] Figure 6 This is a structural schematic diagram of a first circuit connection working principle diagram of an alarm device in one embodiment of the utility model;

[0026] Figure 7 This is a structural schematic diagram of a second circuit connection working principle diagram of an alarm device in one embodiment of the utility model;

[0027] Figure 8 It is a structural schematic diagram of the cross-section of the first guide groove and the second guide groove in one embodiment of the utility model.

[0028] In the figure: 1. Compressor housing; 2. Detection device; 21. First guide groove; 22. Second guide groove; 3. First connecting pipeline; 4. Second connecting pipeline; 5. Wiring unit; 51. First terminal; 52. Second terminal; 53. Third terminal; 54. Fourth terminal; 55. Fifth terminal; 551. Connecting wire; 6. Support unit; 61. First elastic member; 62. Second elastic member; 63. Third elastic member; 64. Fourth elastic member; 7. Adjusting unit; 71. First float; 72. Second float. Detailed implementation

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment 1

[0031] Please refer to Figure 1-8 , the present invention provides a technical solution: an oil level self - protection and detection device for a compressor, including:

[0032] A communication device, arranged on one side of the compressor housing 1;

[0033] A detection device 2, arranged on one side of the communication device and communicating with the compressor housing 1, for detecting the oil level inside the compressor housing 1;

[0034] A wiring unit 5, arranged on the detection device 2 and electrically connected to an external alarm;

[0035] An adjusting unit 7, adjustably arranged inside the detection device 2 and communicating with the wiring unit 5 for controlling the switch of the alarm.

[0036] It should be noted that, when working, the detection device 2 is connected to the compressor casing 1, and can monitor the oil level inside the compressor casing 1 in real time. The connecting device is used to connect the compressor casing 1, balance the pressure difference, and ensure that the oil level inside the compressor casing 1 is consistent with the oil level inside the detection device 2. The adjustment unit 7 moves up and down according to the oil level inside the detection device 2. Then, when the oil level inside the compressor casing 1 is too high or too low, the adjustment unit 7 will be connected to the wiring unit 5, and then the alarm will be turned on to remind the staff that the oil level inside the compressor is abnormal. By setting this device, the self-protection and alarm device for the compressor oil level being too low or too high can disconnect the power supply of the compressor to stop the compressor from running when the compressor is short of oil, so as to avoid the compressor from being worn and damaged due to lack of oil, and an alarm will be issued to facilitate manual troubleshooting of the cause of the fault. When the compressor oil level returns to normal, the alarm will be automatically lifted and the compressor operation will return to normal.

[0037] In one embodiment, the detection device 2 includes a first guide groove 21 and a second guide groove 22 fixed to one side of the first guide groove 21 and communicating with the first guide groove 21 . The second guide groove 22 is communicated with the compressor housing 1 through a communication device.

[0038] In one embodiment, the wiring unit 5 includes a first terminal 51 fixed at the upper end of the second guide groove 22, a second terminal 52 fixed at the lower end of the second guide groove 22, a third terminal 53 fixed at the upper end of the first guide groove 21, a fourth terminal 54 fixed at the lower end of the first guide groove 21 and a fifth terminal 55 fixed in the middle of the first guide groove 21, and the adjustment unit 7 is electrically connected to the first terminal 51, the second terminal 52, the third terminal 53, the fourth terminal 54 and the fifth terminal 55.

[0039] In one embodiment, a support unit 6 for supporting the adjustment unit 7 is disposed inside the first guide groove 21 and the second guide groove 22;

[0040] The supporting unit 6 includes a first elastic member 61 fixed at the top of the inner side of the second guide groove 22 and connected to the first terminal 51, a second elastic member 62 fixed at the bottom of the inner side of the second guide groove 22 and connected to the second terminal 52, a third elastic member 63 fixed at the top of the inner side of the first guide groove 21 and connected to the third terminal 53, and a fourth elastic member 64 fixed at the bottom of the inner side of the first guide groove 21 and connected to the fourth terminal 54. The adjusting unit 7 is located between the first elastic member 61 and the second elastic member 62. The adjusting unit 7 is located between the third elastic member 63 and the fourth elastic member 64. The lower end of the third elastic member 63 is flush with the position of the preset high oil level in the compressor, and the upper end of the fourth elastic member 64 is flush with the position of the preset low oil level in the compressor. The positions of the third elastic member 63 and the fourth elastic member 64 can be adjusted according to the heights of the set high oil level and low oil level.

[0041] In one embodiment, the adjusting unit 7 includes a first floating ball 71 located between the first elastic member 61 and the second elastic member 62 and a second floating ball 72 located between the third elastic member 63 and the fourth elastic member 64. The second floating ball 72 is connected to the fifth terminal 55 through a connecting wire 551, and the first floating ball 71 abuts against the first elastic member 61 and the second elastic member 62.

[0042] In one embodiment, the communicating device includes a first connecting pipe 3 fixed to the upper part of the compressor housing 1 and communicating with the second guide groove 22 and a second connecting pipe 4 fixed to the lower part of the compressor housing 1 and communicating with the second guide groove 22.

[0043] The second guide groove 22, the first terminal 51, the second terminal 52, the first elastic member 61, the second elastic member 62, and the first floating ball 71 are self - protection devices, and the first guide groove 21, the third terminal 53, the fourth terminal 54, the third elastic member 63, the fourth elastic member 64, and the second floating ball 72 are alarm devices.

[0044] The power supply, the compressor, the self-protection device and the alarm device form a first path, wherein the self-protection device and the alarm device are connected to the first path through the first terminal 51 and the second terminal 52. The power supply, the alarm lamp, the self-protection device and the alarm device form a second path, wherein the self-protection and alarm device are connected to the second path through the third terminal 53, the fourth terminal 54 and the fifth terminal 55. The first path and the second path are in a parallel relationship. The first elastic member 61 and the second elastic member 62 are connected in series to the first path, and the third elastic member 63 and the fourth elastic member 64 are connected in parallel to the second path. When the height of the refrigeration oil inside the compressor housing 1 is higher than the preset safety position (H1) of the too-high refrigeration oil, the first floating ball 71 floating on the surface of the refrigeration oil will squeeze the first elastic member 61 and separate from the second elastic member 62; the second floating ball 72 floating on the surface of the refrigeration oil will squeeze the third elastic member 63 and separate from the fourth elastic member 64; at this time, the first path is broken and the second path is connected, at this time the compressor stops and the alarm lamp lights up, and the oil level is too high to alarm. When the refrigeration oil is lower than the preset safety position (H2) of the too-low refrigeration oil, the floating ball floats on the surface of the refrigeration oil and separates from the first elastic member 61 and squeezes the second elastic member 62; the second floating ball 72 floating on the surface of the refrigeration oil will separate from the third elastic member 63 and squeeze the fourth elastic member 64; the first path is broken and the second path is connected, at this time the compressor stops running and the alarm lamp lights up, and the oil level is too low to alarm. When the height of the refrigeration oil is within the normal range (that is, between H1 and H2), the first floating ball 71 floats on the surface of the refrigeration oil and squeezes the first elastic member 61 and the second elastic member 62; the second floating ball 72 floating on the surface of the refrigeration oil will separate from the third elastic member 63 and the fourth elastic member 64; the first path is connected and the second path is broken, at this time the compressor runs normally, the alarm lamp does not light up, and the system is normal. Through the above control, it can be realized that when the refrigeration oil level inside the compressor housing is too high or too low, the compressor stops running and the alarm lamp lights up; when the oil inside the compressor housing returns to the normal range, the self-protection and alarm device resets, the compressor runs normally, and the alarm lamp goes out.

[0045] Embodiment 2

[0046] The power supply, the compressor, the self-protection device and the alarm device form a first path, wherein the self-protection device and the alarm device are connected to the first path through the first terminal 51 and the second terminal 52. The power supply, the alarm lamp 1, the self-protection device and the alarm device form a second path, wherein the self-protection and alarm device are connected to the second path through the third terminal 53 and the fifth terminal 55. The power supply, the alarm lamp 2, the self-protection device and the alarm device form a third path, wherein the self-protection device and the alarm device are connected to the third path through the fourth terminal 54 and the fifth terminal 55. The first path, the second path and the third path are in a parallel relationship. The first elastic member 61 and the second elastic member 62 are connected in series to the first path. When the height of the refrigeration oil is higher than the preset safe position (H1) of the too-high refrigeration oil, the first floating ball 71 floating on the surface of the refrigeration oil will squeeze the first elastic member 61 and separate from the second elastic member 62; the second floating ball 72 floating on the surface of the refrigeration oil will squeeze the third elastic member 63 and separate from the fourth elastic member 64; at this time, the first path is broken, the second path is on, the third path is broken, at this time the compressor stops, the alarm lamp 1 is on, and the alarm lamp 2 is off, and the high oil level (alarm lamp 1) alarms. When the refrigeration oil is lower than the preset safe position (H2) of the too-low refrigeration oil, the floating ball floats on the surface of the refrigeration oil and separates from the first elastic member 61 and squeezes the second elastic member 62; the second floating ball 72 floating on the surface of the refrigeration oil will separate from the third elastic member 63 and squeeze the fourth elastic member 64; at this time, the first path is broken, the second path is broken, the third path is on, at this time the compressor stops, the alarm lamp 1 is off, and the alarm lamp 2 is on, and the high oil level (alarm lamp 2) alarms. When the height of the refrigeration oil is within the normal range (that is, between H1 and H2), the floating ball floats on the surface of the refrigeration oil and squeezes the first elastic member 61 and the second elastic member 62; the second floating ball 72 floating on the surface of the refrigeration oil will separate from the third elastic member 63 and the fourth elastic member 64; at this time, the first path is on, the second path is broken, the third path is broken, at this time the compressor runs normally, the alarm lamp 1 is off, the alarm lamp 2 is off, and the system runs normally without alarm. Through the above control, it can be realized that when the refrigeration oil level inside the compressor housing is too high, the compressor stops running and the alarm lamp 1 is on; when the refrigeration oil level inside the compressor housing is too low, the compressor stops running and the alarm lamp 2 is on; when the oil inside the compressor housing returns to the normal range, the self-protection and alarm device resets, the compressor runs normally, and the alarm lamps 1 and 2 go out; thus realizing separate alarms for too-high and too-low compressor oil levels, which is convenient for troubleshooting.

[0047] In addition, if there are descriptions involving "first", "second", etc. in the embodiments, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance to the specification or the number of the indicated technical features implicitly. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one such feature.

Claims

1. A compressor oil level self-protection and detection device, characterized in that: include: A communication device, arranged on one side of the compressor housing (1); A detection device (2), arranged on one side of the communication device and connected to the compressor housing (1), and used for detecting the oil level inside the compressor housing (1); A wiring unit (5) is arranged on the detection device (2) and is electrically connected to an external alarm; An adjustment unit (7) is adjustably arranged inside the detection device (2) and is connected to the wiring unit (5) to control the switch of the alarm.

2. The oil level self-protection and detection device for a compressor according to claim 1, characterized in that: The detection device (2) comprises a first guide groove (21) and a second guide groove (22) fixed on one side of the first guide groove (21) and connected to the first guide groove (21); the second guide groove (22) is connected to the compressor housing (1) through a connecting device.

3. The oil level self-protection and detection device for a compressor according to claim 2, characterized in that: The wiring unit (5) comprises a first wiring post (51) fixed at the upper end of the second guide groove (22), a second wiring post (52) fixed at the lower end of the second guide groove (22), a third wiring post (53) fixed at the upper end of the first guide groove (21), a fourth wiring post (54) fixed at the lower end of the first guide groove (21) and a fifth wiring post (55) fixed at the middle of the first guide groove (21); the adjustment unit (7) is electrically connected to the first wiring post (51), the second wiring post (52), the third wiring post (53), the fourth wiring post (54) and the fifth wiring post (55).

4. The oil level self-protection and detection device for a compressor according to claim 3, characterized in that: A support unit (6) for supporting the adjustment unit (7) is arranged inside the first guide groove (21) and the second guide groove (22); The support unit (6) comprises a first elastic member (61) fixed at the top of the inner side of the second guide groove (22) and connected to the first terminal (51), a second elastic member (62) fixed at the bottom of the inner side of the second guide groove (22) and connected to the second terminal (52), a third elastic member (63) fixed at the top of the inner side of the first guide groove (21) and connected to the third terminal (53), and a fourth elastic member (64) fixed at the bottom of the inner side of the first guide groove (21) and connected to the fourth terminal (54), the adjustment unit (7) is located between the first elastic member (61) and the second elastic member (62), and the adjustment unit (7) is located between the third elastic member (63) and the fourth elastic member (64).

5. The oil level self-protection and detection device for a compressor according to claim 4, characterized in that: The regulating unit (7) comprises a first float (71) located between the first elastic member (61) and the second elastic member (62) and a second float (72) located between the third elastic member (63) and the fourth elastic member (64); the second float (72) is connected to the fifth terminal (55) via a connecting wire (551); and the first float (71) is in contact with the first elastic member (61) and the second elastic member (62).

6. The oil level self-protection and detection device for a compressor according to claim 4, characterized in that: The communication device comprises a first connecting pipeline (3) fixed to the upper part of the compressor housing (1) and communicating with the second guide groove (22), and a second connecting pipeline (4) fixed to the lower part of the compressor housing (1) and communicating with the second guide groove (22).

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