Air compressor low-temperature starting protection device

Abstract

The utility model provides an air compressor low-temperature starting protection device which is suitable for being installed on an air compressor and comprises a buffering oil barrel and a heating device. Wherein the buffer oil barrel is provided with a closed accommodating space, and a first oil pipe and a second oil pipe communicated with the closed accommodating space, the first oil pipe is communicated with the machine head, and the second oil pipe is communicated with the oil pump; the heating device can heat the oil gas barrel and the buffer oil barrel, so that the temperature of the lubricating oil is kept within a certain range. When the air compressor is in a low-temperature environment, the heating device is automatically started to heat the oil gas barrel and the buffer oil barrel, so that lubricating oil is kept within a certain range and can normally flow in equipment; when the air compressor is started to work, lubricating oil directly flows into the machine head from the buffering oil barrel, and the speed of the lubricating oil flowing into the machine head is higher. According to the low-temperature starting protection device for the air compressor, when the air compressor works in a low-temperature environment, the heating device can heat the oil gas barrel and the buffer oil barrel, so that lubricating oil can flow normally to lubricate equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, in particular to a low-temperature starting protection device for air compressors. Background Art

[0002] An air compressor is a device that uses an electric motor to drive a compressor to compress air into high-pressure gas. The air compressor is mainly composed of a filter, an electric motor, a compressor, a cooling system, a control system, a separator, and an air storage tank. When the air compressor is working, air enters the electric motor through the air intake valve, and the air is compressed into high-pressure gas through the compressor in the electric motor. During the compression process, the air mixes with the cooling lubricating oil in the electric motor to form a high-pressure oil-gas mixture. The oil-gas mixture enters the separator through the electric motor. The separator is used to separate the oil-gas mixture. The separated gas enters the air storage tank after being cooled by the cooler.

[0003] Chinese patent document CN104214075A discloses an integrated variable frequency air compressor device, including a base, on which an air compressor body and a frequency converter are arranged, the frequency converter part is embedded in the air compressor body, an air compressor electronic control component is also arranged on the base, and an air compressor heat dissipation component is also arranged on the air compressor body; the frequency converter includes a frequency converter control component and a frequency converter heat dissipation component, the frequency converter control component is embedded in the air compressor electronic control component, and the frequency converter heat dissipation component is connected to the air compressor body.

[0004] The air compressor disclosed in the above patent document is a commonly used air compressor, but when it works in a low temperature environment, the viscosity of the lubricating oil in the oil barrel will increase, resulting in poor fluidity of the lubricating oil inside the equipment, which will make the lubricating oil unable to effectively lubricate the equipment, thereby increasing the friction damage of the equipment and reducing the working efficiency and service life of the equipment; and when the external ambient temperature is low, the lubricating oil is also prone to solidification, crystallization and the like, resulting in a significant decrease in its lubrication performance and flow performance. Starting the equipment at this time will cause unstable operation of the equipment and even cause equipment failure.

[0005] Therefore, how to design a low-temperature start-up protection device for an air compressor that is suitable for use in a low-temperature environment and can heat the oil barrel to reduce the viscosity of the lubricating oil after heating and enhance fluidity is a technical problem that has not yet been solved in the prior art. Utility Model Content

[0006] Therefore, the technical problem to be solved by the utility model is to overcome the technical defects in the prior art that when the air compressor works in a low temperature environment, the viscosity of the lubricating oil in the oil barrel will increase due to the low external ambient temperature, resulting in poor fluidity of the lubricating oil in the equipment, which will make the lubricating oil unable to effectively lubricate the equipment, thereby increasing the friction and wear of the equipment and reducing the working efficiency and life of the equipment, thereby providing an air compressor low-temperature starting protection device suitable for use in a low temperature environment, which can heat the oil barrel, reduce the viscosity of the lubricating oil after heating, and enhance its fluidity.

[0007] To this end, the utility model provides an air compressor low temperature start protection device, which is suitable for installation on an air compressor, wherein the air compressor comprises: an oil and gas barrel, an oil filter, an oil pump, a machine head, a motor, an air storage tank, a heat exchange device and a frame structure;

[0008] It is characterized by: it also includes a buffer oil barrel and a heating device;

[0009] The buffer oil barrel has a sealed accommodation space, and a first oil pipe and a second oil pipe connected to the sealed accommodation space, the other end of the first oil pipe is connected to the machine head, the other end of the second oil pipe is connected to the oil pump, and the oil pump is connected to the oil and gas barrel;

[0010] The heating device can heat the oil-gas barrel and the buffer oil barrel to keep the temperature of the lubricating oil in the oil-gas barrel and the buffer oil barrel within a target temperature range.

[0011] As a preferred solution, the heating device comprises:

[0012] The first heating device comprises a first heating wire, which is coiled into an arc shape and fixedly arranged at the bottom of the oil and gas barrel;

[0013] A second heating device, comprising a second heating wire, wherein the second heating wire is spirally coiled outside the buffer oil barrel;

[0014] It also includes a controller connected to the first heating device and the second heating device; when the oil temperature inside the oil and gas barrel is lower than the lower limit of the target temperature range, the first heating device is automatically controlled to start heating, and when heated to the upper limit of the target temperature, the first heating device is automatically controlled to stop heating; when the oil temperature inside the buffer oil barrel is lower than the lower limit of the target temperature range, the second heating device is automatically controlled to start heating, and when heated to the upper limit of the target temperature, the second heating device is automatically controlled to stop heating.

[0015] As a preferred solution, one end of the first oil pipe extends into a position close to the bottom of the buffer oil barrel, and one end of the second oil pipe extends into a position close to the top of the buffer oil barrel.

[0016] As a preferred solution, the buffer oil barrel is arranged between the oil and gas barrel and the oil pump, and is located on one side of the oil and gas barrel and the oil pump.

[0017] As a preferred solution, the frame structure has a base, vertical beams arranged at the four corners of the base, and a support beam arranged near the gas tank and below the gas tank; there are two support beams, and the height of the support beams is smaller than that of the vertical beams.

[0018] As a preferred solution, the frame structure also includes: two bearing members arranged on the top surface of the base for bearing the oil and gas barrel, and a groove matching the bottom of the oil and gas barrel is provided in the middle position of the bearing member; and four first fixing members and four second fixing members arranged on the top surface of the base for fixing the motor and the gas storage tank; the bottom of the motor and the bottom of the gas storage tank are screwed to the first fixing members and the second fixing members.

[0019] As a preferred solution, the motor and the machine head are arranged on one side of the buffer oil barrel.

[0020] As a preferred solution, the air storage tank is arranged on the other side of the buffer oil barrel and is parallel to the motor.

[0021] As a preferred solution, the oil and gas barrel, oil pump, buffer oil barrel, motor and gas storage tank are all fixedly mounted on the top surface of the base.

[0022] As a preferred solution, there are two heat exchange devices, which are arranged in the protection box. The protection box is fixed on the support beam, and a breathable mesh plate is arranged on the top of the protection box.

[0023] The technical solution provided by the utility model has the following advantages:

[0024] 1. The low-temperature starting protection device for an air compressor of the utility model is suitable for being installed on an air compressor, and comprises a buffer oil barrel and a heating device; wherein the buffer oil barrel has a closed containing space, and a first oil pipe and a second oil pipe connected to the closed containing space, the other end of the first oil pipe is connected to the machine head, the other end of the second oil pipe is connected to the oil pump, and the oil pump is connected to the oil and gas barrel; the heating device can heat the oil and gas barrel and the buffer oil barrel, so that the temperature of the lubricating oil in the oil and gas barrel and the buffer oil barrel is maintained within the target temperature range.

[0025] When the air compressor is in a low temperature environment, the heating device automatically starts to heat the oil and gas barrel and the buffer oil barrel, so that the lubricating oil inside the oil and gas barrel and the buffer oil barrel is maintained within the target temperature range, so that the lubricating oil can maintain its lubricity and flow normally inside the equipment; when the air compressor starts working, the lubricating oil flows directly from the enclosed storage space of the buffer oil barrel through the first oil pipe into the machine head, so that the lubricating oil can flow into the machine head faster.

[0026] That is to say, in the low-temperature starting protection device for air compressor of the utility model, when the air compressor is working in a low-temperature environment, the heating device can heat the oil and gas barrel and the buffer oil barrel, so that the lubricating oil can flow normally to lubricate the equipment; and the lubricating oil can be directly input into the machine head from the enclosed containing space of the buffer oil barrel, without having to pass through a longer pipeline from the oil and gas barrel to reach the machine head, so the speed at which the lubricating oil flows into the machine head becomes faster.

[0027] 2. The utility model relates to a low-temperature starting protection device for an air compressor, wherein the heating device comprises a first heating device, a second heating device and a controller, wherein the first heating device comprises a first heating wire, which is coiled into an arc shape and fixedly arranged at the bottom of an oil and gas barrel; the second heating device comprises a second heating wire, which is spirally coiled on the outside of a buffer oil barrel; the controller is connected to the first heating device and the second heating device, and when the oil temperature inside the oil and gas barrel is lower than the lower limit of a target temperature range, the controller automatically controls the first heating device to start heating, and when the temperature reaches the upper limit of a target temperature, the controller automatically controls the first heating device to stop heating; when the oil temperature inside the buffer oil barrel is lower than the lower limit of a target temperature range, the controller automatically controls the second heating device to start heating, and when the temperature reaches the upper limit of a target temperature, the controller automatically controls the second heating device to stop heating; the heating device enables the air compressor to work normally in a low-temperature environment, and can avoid the reduction of working efficiency and service life that is easy to occur when working in a low-temperature environment.

[0028] 3. In the low-temperature starting protection device for an air compressor of the utility model, one end of the first oil pipe extends into a position near the bottom of the buffer oil barrel. When the amount of lubricating oil in the buffer oil barrel is less, the first oil pipe can also deliver the lubricating oil to the machine head; one end of the second oil pipe extends into a position near the top of the buffer oil barrel, so that the lubricating oil can be temporarily stored in the buffer oil barrel, so that it can flow back to the oil and gas barrel only when the storage amount in the buffer oil barrel reaches a certain requirement.

[0029] 4. The utility model of the low-temperature start-up protection device for the air compressor has two heat exchange devices, which are arranged in a protective box. The two heat exchange devices can make the exchange of cold and hot air faster, have stronger heat dissipation, and are conducive to heat dissipation. The protective box can protect the heat exchange device to prevent the heat dissipation device from being damaged and the air compressor from being unable to work normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the prior art or the specific implementation methods of the present utility model, the drawings used in the description of the prior art or the specific implementation methods are briefly introduced below.

[0031] Figure 1 The utility model is a schematic diagram of the overall structure of a low-temperature starting protection device for an air compressor.

[0032] Figure 2 yes Figure 1 Another stereoscopic view of .

[0033] Figure 3 yes Figure 1 Another stereoscopic view of .

[0034] Figure 4 yes Figure 1 Another stereoscopic view of .

[0035] Figure 5 yes Figure 1 Cross-sectional view of the oil and gas barrel and the first heating device.

[0036] Figure 6 yes Figure 1 Cross-sectional view of the middle buffer oil drum and the second heating device.

[0037] Figure numerals: 1. Oil and gas barrel; 2. Oil filter; 3. Oil pump; 4. Buffer oil barrel; 41. First oil pipe; 42. Second oil pipe; 5. Machine head; 6. Motor; 7. Gas storage tank; 8. Heat exchange device; 81. Protective box; 82. Breathable mesh plate; 9. Base; 91. Vertical beam; 92. Support beam; 93. Bearing member; 94. First fixing member; 95. Second fixing member; 10. First heating device; 11. First heating wire; 12. Second heating device; 13. Second heating wire. DETAILED DESCRIPTION

[0038] In order to make those skilled in the art better understand the present solution, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present application.

[0039] It should be noted that the terms "first", "second", etc. in the claims and description of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not limited to those steps or units clearly listed, but may also include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0040] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate orientation or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present application can be understood according to the specific circumstances. In addition, the term "multiple" should mean two or more. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

[0041] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments. Example

[0042] This embodiment provides an air compressor low temperature startup protection device, which is suitable for installation on an air compressor. Figure 1-6 As shown, the air compressor includes: an oil and gas barrel 1, an oil filter 2, an oil pump 3, a machine head 5, a motor 6, an air storage tank 7, a heat exchange device 8, a frame structure, a buffer oil barrel 4 and a heating device; wherein the buffer oil barrel 4 has a closed containing space, and a first oil pipe 41 and a second oil pipe 42 connected to the closed containing space, the other end of the first oil pipe 41 is connected to the machine head 5, the other end of the second oil pipe 42 is connected to the oil pump 3, and the oil pump 3 is connected to the oil and gas barrel 1; the heating device can heat the oil and gas barrel 1 and the buffer oil barrel 4, so that the temperature of the lubricating oil in the oil and gas barrel 1 and the buffer oil barrel 4 is maintained within the target temperature range.

[0043] When the air compressor is in a low-temperature environment, the heating device automatically starts to heat the oil and gas barrel 1 and the buffer oil barrel 4, so that the lubricating oil inside the oil and gas barrel 1 and the buffer oil barrel 4 is maintained within the target temperature range, so that the lubricating oil can maintain its lubricity and can flow normally inside the equipment; when the air compressor starts working, the lubricating oil directly flows from the enclosed storage space of the buffer oil barrel 4 through the first oil pipe 41 into the machine head 5, so that the lubricating oil can flow into the machine head 5 faster.

[0044] That is to say, in the low-temperature start-up protection device for the air compressor of this embodiment, when the air compressor is working in a low-temperature environment, the heating device can heat the oil and gas barrel 1 and the buffer oil barrel 4, so that the lubricating oil can flow normally to lubricate the equipment; and the lubricating oil can be directly input into the machine head 5 from the enclosed accommodation space of the buffer oil barrel 4, without having to pass through a longer pipeline from the oil and gas barrel 1 to reach the machine head 5, so the speed at which the lubricating oil flows into the machine head 5 becomes faster.

[0045] Specifically, Figure 5-6 As shown, the heating device includes: a first heating device 10, a second heating device 12 and a controller; wherein the first heating device 10 includes a first heating wire 11, which is coiled into an arc shape and fixedly arranged at the bottom of the oil and gas barrel 1; the second heating device 12 includes a second heating wire 13, which is spirally coiled on the outside of the buffer oil barrel 4; and also includes a controller, which is connected to the first heating device 10 and the second heating device 12; when the oil temperature inside the oil and gas barrel 1 is lower than the lower limit of the target temperature range, the first heating device 10 is automatically controlled to start heating, and when the heating reaches the upper limit of the target temperature, the first heating device 10 is automatically controlled to stop heating; when the oil temperature inside the buffer oil barrel 4 is lower than the lower limit of the target temperature range, the second heating device 12 is automatically controlled to start heating, and when the heating reaches the upper limit of the target temperature, the second heating device 12 is automatically controlled to stop heating; the heating device can enable the air compressor to work normally in a low temperature environment, and can avoid the work efficiency and service life that are easily reduced when working in a low temperature environment. The controller described in this embodiment can be a PLC controller commonly used in industry, which is used in conjunction with a temperature sensor; specifically, the temperature sensors are respectively arranged inside the oil and gas barrel 1 and the buffer oil barrel 4 to sense temperature changes, and when the temperature reaches the upper and lower limits of the target temperature range, a signal is sent to the PLC controller. After receiving the signal, the PLC controller controls whether the first heating wire 12 and the second heating wire 13 start working.

[0046] One end of the first oil pipe 41 extends into a position near the bottom of the buffer oil barrel 4. When the amount of lubricating oil in the buffer oil barrel 4 is small, the first oil pipe 41 can also deliver the lubricating oil to the machine head 5. One end of the second oil pipe 42 extends into a position near the top of the buffer oil barrel 4, so that the lubricating oil can be temporarily stored in the buffer oil barrel 4, so that it can flow back to the oil and gas barrel 1 only when the storage amount in the buffer oil barrel 4 reaches a certain requirement.

[0047] The buffer oil barrel 4 is arranged between the oil and gas barrel 1 and the oil pump 3, and is located on one side of the oil and gas barrel 1 and the oil pump 3. This installation position makes the buffer oil barrel 4 closer to the machine head 5, which can make the lubricating oil flow into the machine head 5 faster.

[0048] The frame structure has a base 9, and vertical beams 91 arranged at the four corners of the base 9, and a support beam 92 arranged near the gas tank 7 and below the gas tank 7; there are two support beams 92, and the height is less than that of the vertical beams 91; this design of the frame structure can make the overall stability and bearing capacity of the frame stronger.

[0049] The frame structure also includes: two bearing members 93 arranged on the top surface of the base 9 for bearing the oil and gas barrel 1, and a groove matching the bottom of the oil and gas barrel 1 is provided at the middle position of the bearing member 93; and four first fixing members 94 and four second fixing members 95 arranged on the top surface of the base 9 for fixing the motor 6 and the gas storage tank 7; the bottom of the motor 6 and the bottom of the gas storage tank 7 are screwed to the first fixing member 94 and the second fixing member 95; this connection method is convenient for disassembly and maintenance.

[0050] The motor 6 and the machine head 5 are arranged on one side of the buffer oil barrel 4. The gas tank 7 is arranged on the other side of the buffer oil barrel 4 and is parallel to the motor 6. The oil and gas barrel 1, the oil pump 3, the buffer oil barrel 4, the motor 6 and the gas tank 7 are all fixedly mounted on the top surface of the base 9; this installation position has a more reasonable structure, better compactness and better heat dissipation.

[0051] There are two heat exchange devices 8, which are arranged in the protective box 81. The protective box 81 is fixedly arranged on the support beam 92. A breathable mesh plate 82 is arranged on the top of the protective box 81. The two heat exchange devices 8 can make the exchange of cold and hot air faster and have stronger heat dissipation, which is conducive to heat dissipation. The protective box 81 can protect the heat exchange device 8 to prevent the heat dissipation device 8 from being damaged and the air compressor from being unable to work normally.

[0052] The air compressor low-temperature start-up protection device in this embodiment is used as follows: when the air compressor is in a low-temperature environment, the heating device automatically starts to heat the oil and gas barrel 1 and the buffer oil barrel 4, so that the lubricating oil inside the oil and gas barrel 1 and the buffer oil barrel 4 is maintained within the target temperature range, thereby enabling the lubricating oil to maintain its lubricity and flow normally inside the equipment; when the air compressor starts working, the lubricating oil directly flows from the enclosed storage space of the buffer oil barrel 4 through the first oil pipe 41 into the machine head 5, thereby enabling the lubricating oil to flow into the machine head 5 at a faster speed.

[0053] Obviously, the above embodiments are merely examples for clear explanation, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of this innovative technical solution.

Claims

1. A low temperature start protection device for an air compressor, suitable for being installed on an air compressor, the air compressor comprising an oil and gas barrel (1), an oil filter (2), an oil pump (3), a machine head (5), a motor (6), an air storage tank (7), a heat exchange device (8) and a frame structure; Features: It also includes a buffer oil barrel (4) and a heating device; The buffer oil barrel (4) has a sealed accommodation space, and a first oil pipe (41) and a second oil pipe (42) connected to the sealed accommodation space, the other end of the first oil pipe (41) is connected to the machine head (5), the other end of the second oil pipe (42) is connected to the oil pump (3), and the oil pump (3) is connected to the oil and gas barrel (1); The heating device is capable of heating the oil and gas barrel (1) and the buffer oil barrel (4), so that the temperature of the lubricating oil in the oil and gas barrel (1) and the buffer oil barrel (4) is maintained within a target temperature range.

2. The low temperature startup protection device for air compressor according to claim 1, characterized in that: The heating device comprises: The first heating device (10) comprises a first heating wire (11), the first heating wire (11) being coiled into an arc shape and fixedly arranged at the bottom of the oil and gas barrel (1); A second heating device (12) comprising a second heating wire (13), wherein the second heating wire (13) is spirally coiled on the outside of the buffer oil barrel (4); The controller is also included, which is connected to the first heating device (10) and the second heating device (12); when the oil temperature inside the oil and gas barrel (1) is lower than the lower limit of the target temperature range, the first heating device (10) is automatically controlled to start heating, and when the oil temperature reaches the upper limit of the target temperature, the first heating device (10) is automatically controlled to stop heating; when the oil temperature inside the buffer oil barrel (4) is lower than the lower limit of the target temperature range, the second heating device (12) is automatically controlled to start heating, and when the oil temperature reaches the upper limit of the target temperature, the second heating device (12) is automatically controlled to stop heating.

3. The low temperature startup protection device for air compressor according to claim 1, characterized in that: One end of the first oil pipe (41) extends into a position close to the bottom of the buffer oil barrel (4), and one end of the second oil pipe (42) extends into a position close to the top of the buffer oil barrel (4).

4. The low temperature startup protection device for air compressor according to claim 1, characterized in that: The buffer oil barrel (4) is arranged between the oil and gas barrel (1) and the oil pump (3), and is located on one side of the oil and gas barrel (1) and the oil pump (3).

5. The low temperature startup protection device for air compressor according to claim 1, characterized in that: The frame structure comprises a base (9), vertical beams (91) arranged at four corners of the base (9), and support beams (92) arranged near the gas storage tank (7) and below the gas storage tank (7); there are two support beams (92), and the height of the support beams (92) is smaller than that of the vertical beams (91).

6. The low temperature start protection device for air compressor according to claim 5, characterized in that: The frame structure further comprises: two bearing members (93) arranged on the top surface of the base (9) for bearing the oil and gas barrel (1), wherein a groove matching and fitting the bottom of the oil and gas barrel (1) is provided at the middle position of the bearing member (93); and four first fixing members (94) and four second fixing members (95) arranged on the top surface of the base (9) for fixing the motor (6) and the gas storage tank (7); the bottom of the motor (6) and the bottom of the gas storage tank (7) are screwed to the first fixing members (94) and the second fixing members (95).

7. The low temperature startup protection device for air compressor according to claim 1, characterized in that: The motor (6) and the machine head (5) are arranged on one side of the buffer oil barrel (4).

8. The low temperature startup protection device for air compressor according to claim 1, characterized in that: The gas storage tank (7) is arranged on the other side of the buffer oil barrel (4) and is parallel to the motor (6).

9. The low temperature startup protection device for air compressor according to claim 5, characterized in that: The oil and gas barrel (1), the oil pump (3), the buffer oil barrel (4), the motor (6) and the gas storage tank (7) are all fixedly mounted on the top surface of the base (9).

10. The low temperature startup protection device for air compressor according to claim 5, characterized in that: There are two heat exchange devices (8), which are arranged in a protection box (81); the protection box (81) is fixedly arranged on the support beam (92); and a breathable mesh plate (82) is arranged on the top of the protection box (81).

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