Heat energy recovery type air compressor

Abstract

The utility model mainly relates to the technical field of air compressors, in particular to a heat energy recovery type air compressor, which comprises a heat exchange tube, a first end and a second end of the heat exchange tube are respectively communicated with a lubricating oil way outlet and a lubricating oil way inlet of the air compressor; the heat exchange pipe comprises an inner shell, an outer shell and an annular cooling channel formed between the inner shell and the outer shell, and the outer wall of the annular cooling channel communicates with a water inlet pipe and a water outlet pipe which are symmetrically distributed. The end, away from the annular cooling channel, of the water inlet pipe communicates with the cooling water tank, the end, away from the annular cooling channel, of the water outlet pipe communicates with a water pumping opening of the control pump, and a water drainage opening of the control pump communicates with the buffering water tank through a first connecting pipe. According to the air compressor, a large amount of waste heat generated in the operation process of the air compressor can be effectively recycled and converted into available hot water, and therefore energy waste is avoided.

Description

Technical Field

[0001] This utility model mainly relates to the field of air compressor technology, specifically to a heat recovery air compressor. Background Technology

[0002] Air compressors are indispensable power equipment in modern industrial production, widely used in pneumatic tools, painting, material handling, instrument control, and many other fields. However, air compressors suffer from a significant energy efficiency problem during operation: the vast majority of the valuable heat energy converted from electricity is simply released into the atmosphere through the cooler or the compressor surface, wasting it without any effective utilization. This not only causes huge energy waste and increases operating costs for users (due to underutilized electrical energy), but also runs counter to the current sustainable development concepts of energy conservation, emission reduction, and improved energy efficiency.

[0003] Therefore, there is an urgent need to develop a structurally sound, efficient and reliable heat recovery technology that can effectively recover the large amount of waste heat generated during the operation of air compressors and convert it into usable heat energy, thereby significantly improving the overall energy utilization efficiency of air compressors, reducing operating costs, and reducing energy waste and carbon emissions. Utility Model Content

[0004] 1. The technical problem to be solved by the utility model:

[0005] This invention provides a heat recovery air compressor to solve the technical problems existing in the background art.

[0006] 2. Technical Solution:

[0007] To achieve the above objectives, the technical solution provided by this utility model is as follows: a heat recovery air compressor, including a heat exchange tube, the first end of which is connected to the lubricating oil outlet and the lubricating oil inlet of the air compressor, respectively.

[0008] The heat exchange tube includes an inner shell and an outer shell, and an annular cooling channel formed between the two. The outer wall of the annular cooling channel is connected to symmetrically distributed inlet and outlet water pipes.

[0009] The end of the inlet pipe away from the annular cooling channel is connected to the cooling water tank, the end of the outlet pipe away from the annular cooling channel is connected to the water inlet of the control pump, and the drain outlet of the control pump is connected to the buffer water tank through the first connecting pipe.

[0010] Furthermore, the buffer water tank is also connected to a second connecting pipe and a third connecting pipe, the ends of the second connecting pipe and the third connecting pipe away from the buffer water tank being connected to the inlet and outlet of the heating pipe, respectively.

[0011] Furthermore, a first switching pipe is connected to one side of the first connecting pipe, a first valve is installed on the first switching pipe, and the end away from the first connecting pipe is connected to the cooling water tank. A second valve is installed on the first connecting pipe, and the second valve is located between the first valve and the end of the first connecting pipe away from the control pump drain outlet.

[0012] Furthermore, a second switching pipe is connected to one side of the outlet pipe, a third valve is installed on the second switching pipe, and the end away from the outlet pipe is connected to the buffer water tank. A fourth valve is installed on the outlet pipe, and the fourth valve is located between the third valve and the end of the outlet pipe away from the control pump's inlet.

[0013] Furthermore, the heat exchange tube is configured as a serpentine structure that extends the heat exchange path.

[0014] Furthermore, the heat exchange tube is fixedly installed inside the housing, and the housing has an air inlet and an air outlet on the side walls corresponding to the heat exchange tube. The air inlet is equipped with an air intake fan, and the air outlet is equipped with an exhaust fan, and the housing is connected to the external environment through an air duct.

[0015] 3. Beneficial effects:

[0016] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: the lubricating oil in the air compressor lubrication circuit circulates inside the heat exchange tube through the first and second ends, and can be cooled by the cold water in the annular cooling channel. The hot water heated by the lubricating oil can be collected in the buffer water tank and used for heating. This effectively recovers a large amount of waste heat generated during the operation of the air compressor and converts it into usable hot water, thereby avoiding energy waste. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the box body of this utility model;

[0019] Figure 3 This is a schematic diagram of the heat exchange tube cross-section of this utility model;

[0020] Figure 4 This is a schematic diagram of the connection structure between the inlet pipe and the outlet pipe of this utility model;

[0021] Figure 5 This is a schematic diagram of the connection structure between the water outlet pipe and the first connecting pipe of this utility model.

[0022] Figure label:

[0023] 1. Heat exchanger tube; 101. Inner shell; 102. Outer shell; 103. Annular cooling channel; 2. Water inlet pipe; 3. Water outlet pipe; 4. Cooling water tank; 5. Control pump; 6. First connecting pipe; 7. Buffer water tank; 8. Second connecting pipe; 9. Third connecting pipe; 10. First switching pipe; 11. First valve; 12. Second valve; 13. Second switching pipe; 14. Third valve; 15. Fourth valve; 16. Housing; 1601. Air inlet; 1602. Air outlet; 17. Inlet fan; 18. Exhaust fan; 19. Air duct. Detailed Implementation

[0024] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "equipped with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example

[0028] Example 1: Refer to Appendix Figure 1-5 A heat recovery air compressor includes a heat exchange tube 1, the first end of which is connected to the lubricating oil outlet and the lubricating oil inlet of the air compressor, respectively.

[0029] The heat exchange tube 1 includes an inner shell 101 and an outer shell 102, and an annular cooling channel 103 is formed between the two. The outer wall of the annular cooling channel 103 is connected to a symmetrically distributed inlet pipe 2 and outlet pipe 3.

[0030] The end of the inlet pipe 2 away from the annular cooling channel 103 is connected to the cooling water tank 4, the end of the outlet pipe 3 away from the annular cooling channel 103 is connected to the water inlet of the control pump 5, and the drain outlet of the control pump 5 is connected to the buffer water tank 7 through the first connecting pipe 6.

[0031] In this embodiment, the lubricating oil in the air compressor lubrication circuit circulates within the heat exchange tube 1 through the first and second ends. During this process, the control pump 5 draws water from the annular cooling channel 103 through the water outlet pipe 3. In conjunction with the water inlet pipe 2, the cold water in the cooling water tank 4 is drawn into the annular cooling channel 103, thereby cooling the lubricating oil. After being heated by the lubricating oil, the cold water in the annular cooling channel 103 enters the buffer water tank 7 through the first connecting pipe 6. This effectively recovers a large amount of waste heat generated during the operation of the air compressor and converts it into usable hot water, thus avoiding energy waste.

[0032] Example 2: Refer to Appendix Figure 4 The buffer water tank 7 is also connected to a second connecting pipe 8 and a third connecting pipe 9. The ends of the second connecting pipe 8 and the third connecting pipe 9 away from the buffer water tank 7 are respectively connected to the inlet and outlet of the heating pipe.

[0033] In this embodiment, the hot water collected in the buffer tank 7 can enter the heating pipe through the second connecting pipe 8. The hot water flows along the heating pipe and can be used for heating. Finally, it flows back to the buffer tank 7 through the third connecting pipe 9.

[0034] Example 3: Refer to Appendix Figure 4 and 5The first connecting pipe 6 is connected to a first switching pipe 10 on one side. A first valve 11 is installed on the first switching pipe 10, and the end away from the first connecting pipe 6 is connected to the cooling water tank 4. A second valve 12 is installed on the first connecting pipe 6, and the second valve 12 is located between the first valve 11 and the end of the first connecting pipe 6 away from the drain port of the control pump 5. The outlet pipe 3 is connected to a second switching pipe 13 on one side. A third valve 14 is installed on the second switching pipe 13, and the end away from the outlet pipe 3 is connected to the buffer water tank 7. A fourth valve 15 is installed on the outlet pipe 3, and the fourth valve 15 is located between the third valve 14 and the end of the outlet pipe 3 away from the water intake port of the control pump 5.

[0035] In this embodiment, starting the control pump 5 when closing the first valve 11 and the third valve 14, and opening the second valve 12 and the fourth valve 15 can achieve the implementation of Embodiment 1.

[0036] When the first valve 11 and the third valve 14 are opened, and the second valve 12 and the fourth valve 15 are closed, the control pump 5 is started. The control pump 5 can draw the cooled water in the buffer water tank 7 through the second switching pipe 13 and the outlet pipe 3, and then flow into the cooling water tank 4 through the first connecting pipe 6 and the first switching pipe 10 to achieve water circulation.

[0037] Example 4: Refer to Appendix Figure 2 and 3 The heat exchange tube 1 is configured as a serpentine structure that extends the heat exchange path; the heat exchange tube 1 is fixedly installed inside the housing 16, and the housing 16 is provided with an air inlet 1601 and an air outlet 1602 on the side walls corresponding to both sides of the heat exchange tube 1, respectively. The air inlet 1601 is provided with an air intake fan 17, and the air outlet 1602 is provided with an exhaust fan 18, and is connected to the external environment through the air duct 19.

[0038] In this embodiment, the serpentine heat exchange tube 1 can extend the heat exchange path and improve the heat dissipation effect. The intake fan 17 can draw outside air into the housing 16 through the air inlet 1601, and the exhaust fan 18 can blow the hot air inside the housing 16 into the air duct 19 through the air outlet 1602, and then exhaust it to the outside through the air duct 19, which can further improve the heat dissipation effect.

[0039] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

[0040] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art.

Claims

1. A heat recovery air compressor, characterized in that: It includes a heat exchange tube (1), the first end of which is connected to the lubricating oil outlet and the lubricating oil inlet of the air compressor, respectively; The heat exchange tube (1) includes an inner shell (101) and an outer shell (102), and an annular cooling channel (103) is formed between the two. The outer wall of the annular cooling channel (103) is connected to symmetrically distributed inlet pipes (2) and outlet pipes (3). The end of the inlet pipe (2) away from the annular cooling channel (103) is connected to the cooling water tank (4), the end of the outlet pipe (3) away from the annular cooling channel (103) is connected to the water inlet of the control pump (5), and the drain outlet of the control pump (5) is connected to the buffer water tank (7) through the first connecting pipe (6).

2. The heat recovery air compressor according to claim 1, characterized in that: The buffer water tank (7) is also connected to a second connecting pipe (8) and a third connecting pipe (9). The ends of the second connecting pipe (8) and the third connecting pipe (9) away from the buffer water tank (7) are respectively connected to the inlet and outlet of the heating pipe.

3. A heat recovery air compressor according to claim 2, characterized in that: One side of the first connecting pipe (6) is connected to a first switching pipe (10), and a first valve (11) is installed on the first switching pipe (10). The end of the first connecting pipe (6) away from the first connecting pipe (6) is connected to the cooling water tank (4). A second valve (12) is installed on the first connecting pipe (6), and the second valve (12) is located between the first valve (11) and the end of the first connecting pipe (6) away from the drain port of the control pump (5).

4. A heat recovery air compressor according to claim 3, characterized in that: One side of the outlet pipe (3) is connected to a second switching pipe (13), and a third valve (14) is installed on the second switching pipe (13). The end of the outlet pipe (3) away from the outlet pipe (3) is connected to the buffer water tank (7). A fourth valve (15) is installed on the outlet pipe (3). The fourth valve (15) is located between the third valve (14) and the end of the outlet pipe (3) away from the water inlet of the control pump (5).

5. A heat recovery air compressor according to claim 1, characterized in that: The heat exchange tube (1) is configured as a serpentine structure that extends the heat exchange path.

6. A heat recovery air compressor according to claim 5, characterized in that: The heat exchange tube (1) is fixedly installed inside the housing (16). The housing (16) has an air inlet (1601) and an air outlet (1602) on the side walls corresponding to the heat exchange tube (1). The air inlet (1601) is equipped with an air intake fan (17), and the air outlet (1602) is equipped with an exhaust fan (18). The air outlet (1602) is connected to the external environment through the air duct (19).

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