Totally-enclosed water-cooled scroll air compressor

Abstract

The application provides a totally-enclosed water-cooled scroll air compressor and belongs to the technical field of scroll air compressors. The totally-enclosed water-cooled scroll air compressor comprises a shell, a bearing seat and an end cover which are connected with each other, the bearing seat is fixedly connected with a support on one side, a movable scroll is rotatably connected with one side of the support, a driving device for driving the movable scroll to rotate is arranged in the shell, the end cover is fixedly connected with a stationary scroll inside, and the scroll teeth of the movable scroll and the stationary scroll are engaged to form a compression chamber, and a circulating water channel is arranged in the stationary scroll and is used for introducing cooling liquid to take away heat generated during compression. The circulating water channel is directly arranged in the stationary scroll, the cooling liquid can directly act on the core heat source where the movable scroll and the stationary scroll are engaged, the compression heat can be taken away in time during the operation of the equipment, the heat expansion gap is prevented from losing control due to heat dissipation lag, meanwhile, the annular air inlet channel and the water inlet pipe path are correspondingly arranged, the air inlet and the cooling liquid are heat exchanged through the wall surface of the end cover, the pre-cooled air inlet improves the compression efficiency when the temperature is high, and the preheated air inlet improves the starting performance when the temperature is low.

Description

Technical Field

[0001] This invention relates to the field of scroll air compressor technology, and particularly to a fully enclosed water-cooled scroll air compressor. Background Technology

[0002] Due to its compact structure, low noise, and low vibration, the scroll air compressor is widely used in fields with high requirements for air quality and working environment, such as precision manufacturing and medical devices. Its working principle is to form a series of crescent-shaped compression chambers with periodically changing volume through the meshing of the moving scroll and the stationary scroll, so as to realize the continuous intake, compression and discharge of gas.

[0003] During the compression process, the gas is repeatedly squeezed, its volume shrinks, and its pressure increases, while generating a large amount of compression heat. This heat is highly concentrated in the compression chamber area where the moving and stationary discs mesh, causing the temperature of the scroll disc to rise rapidly. If the heat cannot be discharged in time, it will cause problems such as thermal expansion leading to uncontrolled gaps, reduced efficiency, or even wear and seizure.

[0004] To address this issue, existing water-cooled scroll air compressors typically incorporate cooling channels within the casing. However, compression heat is generated at the meshing surface of the moving and stationary discs, which is an internal heat source. Since the traditional cooling channels are located inside the casing, the heat must first be conducted to the casing surface before it can be carried away, resulting in delayed heat dissipation from the moving and stationary discs. Furthermore, when the equipment is shut down in a low-temperature environment, the cooling water inside the machine freezes and expands in volume, which can easily cause the flow channel or shell to crack. To solve this problem, the conventional approach is to drain the cooling water after shutdown. However, this method requires manual or automatic drainage, and cooling water needs to be refilled before restarting, which affects the continuous operation of the equipment. Secondly, incomplete drainage or air mixing during refilling may lead to a decrease in cooling effect or even airlock failure. Therefore, this application provides a fully enclosed water-cooled scroll air compressor to meet the requirements. Summary of the Invention

[0005] The purpose of this invention is to provide a fully enclosed water-cooled scroll air compressor to solve the above-mentioned problems. By integrating the three major functions of cooling water circuit, intake air temperature regulation and antifreeze compensation into the same circulating cooling process, it can achieve efficient heat dissipation while preventing the problem of coolant freezing and cracking, thereby improving the reliability of equipment operation and solving the problems mentioned in the background art: the single cooling path leads to the lag in heat dissipation in the core area and the problem of coolant freezing and cracking in low temperature environment.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A fully enclosed water-cooled scroll air compressor includes a housing, a bearing seat, and an end cover connected together. A bracket is fixedly connected to one side of the bearing seat, and a moving scroll is rotatably connected to one side of the bracket. A drive device for driving the moving scroll to rotate is provided inside the housing. A stationary scroll is fixedly connected inside the end cover, and the scroll teeth of the moving scroll and the stationary scroll mesh to form a compression chamber. A circulating water channel is provided inside the stationary scroll for introducing coolant to remove the heat generated during compression. The stationary vortex disk is equipped with a compensation component to provide space for volume expansion when the coolant freezes, preventing the flow channel from cracking. The compensation component includes a compensation cavity opened in the stationary vortex disk. The stationary vortex disk has a connecting hole that communicates with the compensation cavity. When the coolant freezes and expands, it enters the compensation cavity through the hole. A floating piston is slidably connected in the compensation cavity to move into the compensation cavity when the coolant expands, so as to absorb the volume increase.

[0007] Optionally, the static vortex disk is formed by stacking a first half-disc and a second half-disc. Water flow paths are opened on the side of the first half-disc and the second half-disc that are close to each other. When the first half-disc and the second half-disc are stacked, the water flow paths form a circulating water path.

[0008] Optionally, a sealing cover plate for sealing the compensation cavity is fixedly connected to one side of the first half-disc, and springs are symmetrically arranged between the sealing cover plate and the floating piston.

[0009] Optionally, a pneumatic connector communicating with the compensation cavity is fixedly connected to one side of the sealing cover plate, which is used to fill the compensation cavity with compressible gas to adjust the initial pressure in the compensation cavity.

[0010] Optionally, the first half-plate is symmetrically provided with water inlet holes and drain holes that are connected to the circulating water circuit. A water inlet pipe and a drain pipe are symmetrically fixedly connected to one side of the inner wall of the end cap. When the end cap is fastened, the water inlet pipe and the drain pipe are respectively inserted into the corresponding water inlet hole and drain hole. Based on the above scheme, the end cap is provided with a water inlet pipe inside, and a water guide channel connected to the water inlet pipe and the water inlet insertion pipe is provided inside the end cap. A drain pipe connected to the drain insertion pipe is provided on the outside of the end cap.

[0011] Optionally, an annular air intake is fixedly connected to the outer side of the end cover, an exhaust chamber is provided between the static vortex disk and the top wall of the end cover, and an exhaust pipe is provided on the outer wall of the end cover and on one side of the exhaust chamber. It is worth mentioning that at least a section of the air intake duct is arranged radially opposite to the water inlet pipe, so that the intake air flowing through the annular air intake duct can exchange heat with the coolant in the water inlet pipe.

[0012] Optionally, an exhaust hole is provided at the center of the stationary vortex disk, and an elastic pressure plate is fixedly connected to the side of the stationary vortex disk away from the moving vortex disk. Under normal conditions, the free end of the elastic pressure plate is fastened to the side of the exhaust hole.

[0013] Optionally, the drive device includes a motor disposed inside the housing, with an eccentric shaft at the end of the motor rotor, one end of which passes through a bearing seat and a bracket in sequence and is connected to the moving scroll.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: In the above-mentioned solution, the fully enclosed water-cooled scroll air compressor provided in this application directly sets the circulating water circuit inside the stationary scroll plate, and the coolant can directly act on the core heat source of the meshing of the moving and stationary plates. It can remove the compression heat in time during the operation of the equipment and avoid the loss of control of thermal expansion gap caused by heat dissipation lag. At the same time, the annular air inlet and the water inlet pipe are arranged in the same direction, and the air inlet and the coolant exchange heat through the end cover wall. At high temperature, the air inlet is pre-cooled to improve the compression efficiency, and at low temperature, the air inlet is pre-heated to improve the start-up performance. By setting a compensation component inside the static vortex disk, the floating piston compresses the compressible gas to absorb the volume of ice expansion, so as to automatically absorb the volume expansion when the coolant freezes. At the same time, it can automatically reset after thawing and push the coolant back into the circulating water circuit. Compared with the shutdown and evacuation method in the existing technology, it is not necessary to add coolant when restarting the equipment to ensure the continuous operation of the equipment. Attached Figure Description

[0015] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0016] Figure 1 This is a schematic diagram of a fully enclosed water-cooled scroll air compressor. Figure 2 This is a cross-sectional view of a fully enclosed water-cooled scroll air compressor. Figure 3 This is a three-dimensional schematic diagram of the end cap of the present invention; Figure 4 This is a cross-sectional view of the end cap of the present invention; Figure 5 This is a schematic diagram of the air intake and water inlet pipes of the present invention; Figure 6 This is an exploded view of the end cap, the first half-disc, and the second half-disc of the present invention. Figure 7 This is a schematic diagram of the compensation component of the present invention; Figure 8 This is a schematic diagram showing the displacement of the floating piston under normal pressure and increased pressure according to the present invention.

[0017] Figure label: 1. Housing; 101. Motor; 102. Eccentric shaft; 2. Bearing housing; 3. End cap; 31. Water inlet pipe; 32. Drain pipe; 301. Air inlet; 302. Exhaust pipe; 303. Water inlet pipe; 304. Water guide pipe; 305. Drain pipe; 4. Bracket; 5. Moving scroll plate; 6. Static vortex plate; 61. First half plate; 62. Second half plate; 63. Circulating water channel; 7. Vent hole; 8. Elastic compression; 9. Compensation component; 91. Compensation cavity; 92. Connecting hole; 93. Floating piston; 94. Sealing cover; 95. Spring; 96. Pneumatic connector.

[0018] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0019] The fully enclosed water-cooled scroll air compressor provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0020] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0021] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0022] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0023] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0024] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a fully enclosed water-cooled scroll air compressor, including a housing 1, a bearing seat 2, and an end cover 3 connected together. A bracket 4 is fixedly connected to one side of the bearing seat 2, and a moving scroll 5 is rotatably connected to one side of the bracket 4. A drive device for driving the moving scroll 5 to rotate is provided inside the housing 1. The drive device includes a motor 101 installed inside the housing 1. An eccentric shaft 102 is provided at the end of the rotor of the motor 101. One end of the eccentric shaft 102 passes through the bearing seat 2 and the bracket 4 in sequence and is connected to the moving scroll 5. The motor 101 drives the rotor to rotate, which drives the eccentric shaft 102 to rotate eccentrically, thereby driving the moving scroll 5 to revolve relative to the stationary scroll 6. This forms a crescent-shaped compression chamber with periodically changing volume between the scroll teeth of the moving scroll 5 and the stationary scroll 6, realizing the continuous intake, compression, and discharge of gas. In this embodiment, as Figure 4 and Figure 6As shown, a stationary scroll 6 is fixedly connected inside the end cap 3, and the moving scroll 5 meshes with the scroll teeth of the stationary scroll 6 to form a compression chamber. The stationary scroll 6 is formed by stacking a first half-disc 61 and a second half-disc 62. Water flow paths are opened on the side of the first half-disc 61 and the second half-disc 62 that are close to each other. When the first half-disc 61 and the second half-disc 62 are stacked, the water flow paths form a circulating water path 63, which is used to introduce coolant to remove the heat generated during compression. The stationary scroll 6 adopts a split stacked structure. Compared with opening complex flow channels inside an integral stationary disk, it can be separated by machining or casting. Water flow paths are formed on half-disc 61 and the second half-disc 62 to reduce processing difficulty and manufacturing cost, while facilitating maintenance and cleaning. The circulating water path 63 meanders along the inside of the stationary volute 6, covering the root of the volute and the area around the compression chamber. When the coolant flows through the circulating water path 63, it directly carries away the compression heat generated during the compression process, especially the core heat source in the meshing area of ​​the moving and stationary discs. This avoids the heat dissipation lag problem in traditional cooling methods, where heat must first be conducted to the surface of the shell before it can be carried away. This effectively controls the temperature of the volute and prevents gap loss and efficiency reduction caused by thermal expansion. The first half-plate 61 has symmetrically opened water inlet holes and drain holes that are connected to the circulating water channel 63. The inner wall of the end cover 3 is symmetrically fixedly connected to one side of the water inlet pipe 31 and drain pipe 32. When the end cover 3 is fastened, the water inlet pipe 31 and drain pipe 32 are respectively inserted into the corresponding water inlet holes and drain holes. The pipe connection structure can automatically connect the coolant inlet and outlet channels at the same time as the end cover 3 is fastened, without the need for additional pipeline connection operations, which can simplify the assembly process. At the same time, a sealing ring can be set on the mating surface between the pipe and the hole wall to ensure the sealing of the connection and prevent coolant leakage. Further: such as Figure 4 and Figure 5 As shown, the end cover 3 is provided with an inlet pipe 303 inside, and a guide water passage 304 connected to the inlet pipe 303 and the inlet pipe 31 is provided inside the end cover 3. A drain pipe 305 connected to the drain pipe 32 is provided on the outside of the end cover 3. Coolant enters the end cover 3 from the external water source through the inlet pipe 303, is diverted to the inlet pipe 31 through the guide water passage 304, and enters the circulating water passage 63 through the inlet hole. After heat exchange is completed inside the static vortex plate 6, it is discharged through the drain hole, the drain pipe 32 and the drain pipe 305, forming a complete cooling circulation loop.

[0025] In this embodiment, as Figures 3 to 5As shown, an annular air intake duct 301 is fixedly connected to the outer side of the end cover 3. An exhaust chamber is provided between the static vortex disk 6 and the top wall of the end cover 3. An exhaust pipe 302 is provided on the outer wall of the end cover 3 and on one side of the exhaust chamber. At least a portion of the air intake duct 301 is radially opposite to the water inlet pipe 303, so that the air flowing through the annular air intake duct 301 exchanges heat with the coolant in the water inlet pipe 303. By using the coolant as a heat exchange medium, the air intake temperature can be regulated without increasing any energy consumption. When the ambient temperature is high, the high intake temperature in the intake manifold 301 will cause the gas density to decrease, resulting in a decrease in the compressor mass flow rate. At the same time, the exhaust temperature will further increase. At this time, the coolant temperature in the water inlet pipe 303 is relatively low (entering after external cooling). The intake air and coolant exchange heat radially through the wall of the end cover 3. The intake air is pre-cooled before entering the compression chamber, which can effectively reduce the initial compression temperature, improve the intake air density and compression efficiency, and suppress the exhaust temperature from being too high, thus avoiding protective shutdown caused by exhaust overheating. When the ambient temperature is low, especially in cold winter regions, the low intake air temperature can lead to excessive lubricating oil viscosity and increased starting resistance. At this time, the coolant temperature in the water inlet pipe 303 is relatively high (after being heated by compression heat). The intake air is preheated before entering the compression chamber, which improves low-temperature starting performance, ensures lubrication effect, reduces starting wear, and extends the service life of the compressor.

[0026] like Figure 4 As shown, an exhaust port 7 is provided at the center of the stationary scroll 6. An elastic pressure plate 8 is fixedly connected to the side of the stationary scroll 6 away from the moving scroll 5. Under normal conditions, the free end of the elastic pressure plate 8 is fastened to the side of the exhaust port 7. When the gas pressure in the compression chamber reaches the exhaust pressure, the high-pressure gas overcomes the pre-tightening force of the elastic pressure plate 8 and pushes it open, entering the exhaust chamber through the exhaust port 7 and then being discharged through the exhaust pipe 302. When the compressor stops, the pressure difference between the exhaust chamber and the compression chamber disappears, and the elastic pressure plate 8 automatically resets itself by its own elasticity and re-fastens to the side of the exhaust port 7 to prevent high-pressure gas from flowing back into the compression chamber and to avoid the situation of the moving scroll 5 reversing and the starting load being too large.

[0027] In this embodiment, as Figure 7 and Figure 8 As shown, the interior of the stationary vortex disk 6 is provided with at least two sets of compensation components 9, which are used to provide a space to accommodate the volume expansion when the coolant freezes, and to prevent the flow channel from cracking. The compensation component 9 includes a compensation cavity 91 opened in the stationary vortex disk 6. A connecting hole 92 is opened in the stationary vortex disk 6 to communicate with the compensation cavity 91. When the coolant freezes and expands, it enters the compensation cavity 91 through the hole. A floating piston 93 is slidably connected in the compensation cavity 91, which moves into the compensation cavity 91 when the coolant expands to absorb the volume increase. The compensating cavity 91 is pre-filled with a certain pressure of compressible gas. The floating piston 93 isolates the gas from the coolant. When the coolant freezes and expands, the expansion pressure acts on the floating piston 93 through the connecting hole 92, pushing the piston to compress the gas. The compressibility of the gas is used to absorb the volume increase. When the temperature rises and the ice melts, the compressed gas expands and pushes the floating piston 93 to reset, pushing the stored coolant back to the circulating water circuit 63. Based on the above: a sealing cover plate 94 for sealing the compensation cavity 91 is fixedly connected to one side of the first half-disc 61, and springs 95 are symmetrically arranged between the sealing cover plate 94 and the floating piston 93. The springs 95 provide auxiliary reset force to ensure that the floating piston 93 can return to its original position after thawing; on the other hand, they can apply a preload force to the floating piston 93 under normal operating conditions to prevent unnecessary displacement of the floating piston 93 due to vibration or pressure fluctuations. A pneumatic connector 96 communicating with the compensation cavity 91 is fixedly connected to one side of the sealing cover plate 94 for filling the compensation cavity 91 with compressible gas (such as nitrogen) to adjust the initial pressure in the compensation cavity. Users can flexibly adjust the filling pressure according to different climate environments and coolant characteristics to achieve the best antifreeze protection effect. Under normal temperature and pressure, the coolant flows normally in the circulating water circuit 63. The compensation cavity 91 is filled with compressible gas at a set pressure. The floating piston 93 is in a balanced position with the assistance of the spring 95. At this time, the compensation cavity 91 maintains a certain initial volume but does not interfere with the main circulation of the coolant. When the temperature drops below freezing point, the coolant freezes and expands in volume. At this time, the pressure generated by the ice expansion is transmitted to the compensation cavity 91 through the connecting hole 92, pushing the floating piston 93 to move towards the sealing cover plate 94 and compressing the compressible gas in the compensation cavity 91. When the ambient temperature rises, the coolant melts and shrinks in volume. The compressed gas expands and pushes the floating piston 93 towards the connecting hole 92, pushing the coolant stored in the compensation cavity 91 back to the circulating water circuit 63. The spring 95 can provide an auxiliary restoring force to ensure that the floating piston 93 returns to its original position.

[0028] Working principle of the invention: After the equipment is started, the motor 101 drives the eccentric shaft 102 to drive the moving scroll 5 to revolve. During this process, a crescent-shaped compression chamber with periodically changing volume is formed between the moving scroll 5 and the stationary scroll 6. At the same time, gas is drawn in from the annular air inlet 301. As the moving scroll 5 revolves, the compression chamber moves from the periphery to the center, and the volume gradually decreases. The gas is continuously compressed. When the compression chamber moves to the center, the gas pressure reaches the exhaust pressure, and the compression is completed. The high-pressure gas enters the exhaust hole 7 in the center of the stationary scroll 6, overcomes the pre-tightening force of the elastic pressure plate 8, pushes it open, enters the exhaust chamber through the exhaust hole 7, and is finally discharged through the exhaust pipe 302. When the compressor stops, the elastic pressure plate 8 automatically resets and latches onto the exhaust hole 7 to prevent gas backflow and the moving scroll 5 from reversing. During this process, the coolant enters the water inlet pipe 303 of the end cover 3 from the external water source, and is diverted to the water inlet pipe 31 through the guide water passage 304. Since the water inlet pipe 31 is already inserted into the water inlet hole of the first half plate 61 when the end cover 3 is fastened, the coolant enters the circulating water passage 63 inside the stationary vortex plate 6, and is discharged through the drain hole, drain pipe 32 and drain pipe 305 after heat exchange, forming a cooling circuit. Since a section of the intake duct 301 is radially opposite to the water inlet pipe 303, the intake air flowing through the intake duct 301 and the coolant in the water inlet pipe 303 exchange heat through the wall of the end cap 3. In high-temperature environments, the intake air is pre-cooled by the coolant, improving the intake air density and compression efficiency; in low-temperature environments, the intake air is pre-heated, improving starting performance and lubrication. The entire process requires no additional energy consumption or independent temperature control. When the equipment is shut down in a low-temperature environment, if the coolant in the circulating water circuit 63 freezes and expands, the pressure will act on the compensation cavity 91 through the connecting hole 92. At this time, the ice expansion pressure pushes the floating piston 93 to move towards the sealing cover plate 94, compressing the gas and spring 95 in the compensation cavity 91 to absorb the volume increase and prevent the flow channel from bursting. When the temperature rises and the ice thaws, the compressed gas expands and the compressed spring 95 recovers. The two work together to push the floating piston 93 to reset, pushing the stored coolant back to the circulating water circuit 63 through the connecting hole 92.

[0029] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0030] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A fully enclosed water-cooled scroll air compressor, comprising a housing (1), a bearing seat (2), and an end cover (3) connected together, wherein a bracket (4) is fixedly connected to one side of the bearing seat (2), and a moving scroll (5) is rotatably connected to one side of the bracket (4); a driving device for driving the moving scroll (5) to rotate is provided inside the housing (1); and a stationary scroll (6) is fixedly connected inside the end cover (3), wherein the scroll teeth of the moving scroll (5) and the stationary scroll (6) mesh to form a compression chamber, characterized in that, The static vortex disk (6) is provided with a circulating water channel (63) for introducing coolant to remove the heat generated during compression; The interior of the stationary vortex disk (6) is provided with a compensation component (9) for providing a space to accommodate volume expansion when the coolant freezes, preventing the flow channel from cracking. The compensation component (9) includes a compensation cavity (91) opened in the stationary vortex disk (6). The stationary vortex disk (6) has a connecting hole (92) that communicates with the compensation cavity (91). When the coolant freezes and expands, it enters the compensation cavity (91) through the hole. A floating piston (93) is slidably connected in the compensation cavity (91) for moving into the compensation cavity (91) when the coolant expands to absorb the volume increase.

2. The fully enclosed water-cooled scroll air compressor according to claim 1, characterized in that, The static vortex disk (6) is formed by stacking a first half disk (61) and a second half disk (62). Water flow paths are opened on the side of the first half disk (61) and the second half disk (62) that are close to each other. When the first half disk (61) and the second half disk (62) are stacked, the water flow paths form a circulating water path (63).

3. The fully enclosed water-cooled scroll air compressor according to claim 2, characterized in that, A sealing cover plate (94) for sealing the compensation cavity (91) is fixedly connected to one side of the first half-disc (61), and springs (95) are symmetrically arranged between the sealing cover plate (94) and the floating piston (93).

4. The fully enclosed water-cooled scroll air compressor according to claim 3, characterized in that, The sealing cover (94) is fixedly connected to a pneumatic connector (96) that communicates with the compensation cavity (91) for filling the compensation cavity (91) with compressible gas to adjust the initial pressure in the compensation cavity.

5. The fully enclosed water-cooled scroll air compressor according to claim 2, characterized in that, The first half-plate (61) is symmetrically provided with water inlet holes and drain holes that are connected to the circulating water path (63). The end cap (3) is symmetrically fixedly connected with a water inlet pipe (31) and a drain pipe (32) on one side of its inner wall. When the end cap (3) is fastened, the water inlet pipe (31) and the drain pipe (32) are respectively inserted into the corresponding water inlet holes and drain holes.

6. The fully enclosed water-cooled scroll air compressor according to claim 5, characterized in that, The end cap (3) is provided with an inlet pipe (303) inside, and a guide water passage (304) connected to the inlet pipe (303) and the inlet insertion pipe (31) inside. The end cap (3) is provided with a drain pipe (305) connected to the drain insertion pipe (32) on the outside.

7. The fully enclosed water-cooled scroll air compressor according to claim 6, characterized in that, An air intake channel (301) is fixedly connected to the outer side of the end cover (3). An exhaust chamber is provided between the static vortex disk (6) and the top wall of the end cover (3). An exhaust pipe (302) is provided on the outer wall of the end cover (3) and on one side of the exhaust chamber.

8. The fully enclosed water-cooled scroll air compressor according to claim 7, characterized in that, At least a portion of the air intake duct (301) is arranged radially opposite to the water inlet pipe (303) so that the intake air flowing through the annular air intake duct (301) exchanges heat with the coolant in the water inlet pipe (303).

9. The fully enclosed water-cooled scroll air compressor according to claim 1, characterized in that, An exhaust hole (7) is provided at the center of the stationary vortex (6). An elastic pressure plate (8) is fixedly connected to the side of the stationary vortex (6) away from the moving vortex (5). Under normal conditions, the free end of the elastic pressure plate (8) is fastened to the side of the exhaust hole (7).

10. The fully enclosed water-cooled scroll air compressor according to claim 1, characterized in that, The drive device includes a motor (101) installed inside the housing (1). The end of the rotor of the motor (101) is provided with an eccentric shaft (102). One end of the eccentric shaft (102) passes through the bearing seat (2) and the bracket (4) in sequence and is connected to the moving scroll (5).

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