Mounting structure for compressor of refrigerating unit

Abstract

The invention discloses a refrigerating unit compressor mounting structure, and relates to the technical field of compressor mounting, the refrigerating unit compressor mounting structure comprises a mounting plate for mounting a compressor, a rack fixed on the lower surface of the mounting plate and a base fixed at the bottom end of the rack, two brackets distributed from front to back are arranged on the lower surface of the mounting plate, and supporting frames are arranged below the brackets; the bracket and the supporting frame are both located on the inner side of the rack. The bracket and the supporting frame are each of an inverted isosceles trapezoid structure, and the two inclined frame bodies in the bracket and the two inclined frame bodies in the supporting frame are distributed in parallel. Based on the arrangement of the limiting unit, when the compressor causes the mounting plate and the bracket to vibrate, the bracket in the vibration state is intercepted, the vibration amplitude of the bracket is effectively reduced, the vibration frequency of the bracket and the mounting plate is effectively reduced, and the influence of the vibration process of the compressor on the whole mounting structure is reduced; and therefore, the influence of the compressor on other equipment and the external environment in the vibration process is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of compressor installation, and particularly relates to a compressor installation structure for a refrigeration unit. Background Art

[0002] A dual-condition solar heat pump air-conditioning unit is a composite system that combines solar energy and heat pump technology. It can flexibly switch the energy utilization mode under different working conditions to meet the multi-functional requirements of refrigeration, heating, and hot water supply, while significantly improving energy efficiency and environmental protection. During the actual working process, by switching the refrigerant circulation path, the unit can flexibly switch between the solar heat pump working condition (water source mode) and the air source heat pump working condition (air-cooled mode). For example, in winter, the solar collector system is used as the heat source to increase the evaporation temperature and improve the heating coefficient of performance; when it is rainy or overcast or there is insufficient sunlight, it automatically switches to the air source heat pump mode to ensure continuous operation.

[0003] The compressor in the dual-condition solar heat pump air-conditioning unit compresses the gaseous refrigerant to increase its pressure and temperature. In the heating mode, it can release heat in the condenser, and in the refrigeration mode, it can absorb heat in the evaporator. Even with the combination of solar auxiliary heat source, the circulation of the refrigerant still depends on the drive of the compressor. In the solar heat pump working condition, the solar collector is used as the main heat source (such as heating the water tank or directly heating the evaporator medium), and the compressor uses this heat source to efficiently heat or cool. In the air source heat pump working condition, when there is insufficient sunlight, the compressor switches to the air source mode to absorb heat from the air to ensure the all-weather operation of the system. Therefore, the compressor is the core component of the heat pump system, and its role is irreplaceable. During the actual working process, a variable-frequency compressor can be used to intelligently adjust the power according to the load demand to achieve further energy-saving effects.

[0004] Most of the existing solar heat pump air-conditioning units are installed on the roof, in an independent equipment room, or inside the basement. To maintain the stability of the compressor, the compressor needs to be installed in place through a frame. During the operation of the compressor in the solar heat pump air-conditioning unit, since the mechanical components such as pistons, rotors, or scroll disks inside the compressor are driven by an electric motor to rotate at a high speed, the reciprocating or rotational movement of the components will inevitably cause mechanical vibration. The vibration generated by the compressor itself is likely to affect the frame connected to it, resulting in vibration of the frame, and then it is easy to transmit the vibration force to the remaining equipment, affecting the safety of the remaining equipment during operation. Therefore, the present invention provides a compressor installation structure for a refrigeration unit to meet the requirements. Summary of the Invention

[0005] In view of the above problems, the present invention provides a compressor installation structure for a refrigeration unit.

[0006] To achieve the above object, the present invention provides the following technical solution: A compressor installation structure for a refrigeration unit, comprising a mounting plate for mounting a compressor, a frame fixed to the lower surface of the mounting plate, and a base fixed to the bottom end of the frame. Two brackets are arranged on the lower surface of the mounting plate in a front-to-rear distribution. A support frame is arranged below each bracket, and both the brackets and the support frames are located inside the frame.

[0007] Both the brackets and the support frames are in an inverted isosceles trapezoid structure. The two inclined frames in the brackets are respectively parallel to the two inclined frames in the support frames, and the bottom end of the bracket is located inside the support frame. Limiting units are provided inside the two inclined frames in the support frame and are respectively opposite to the inclined frames of the bracket.

[0008] A follower column is provided at the bottom end of the bracket. A receiving sleeve capable of accommodating the follower column is provided at the central position inside the support frame. A buffer unit is provided inside the receiving sleeve. Both the follower column and the receiving sleeve are located between the two groups of limiting units.

[0009] Further, each group of the limiting units includes two groups of arc-shaped follower plates arranged from top to bottom, connecting strips provided on the concave surfaces of each arc-shaped follower plate, positioning plates connected to the connecting strips through rotating shafts, and a first return spring and a second return spring respectively provided on both sides of the positioning plate. The ends of the positioning plates far from the connecting strips are fixed to the inner sides of the inclined frames of the support frame, and the ends of the first return spring and the second return spring far from the positioning plates are fixed to the concave surfaces of the arc-shaped follower plates.

[0010] The number of each group of arc-shaped follower plates is not less than two, and the two arc-shaped follower plates are distributed in the front-to-rear direction inside the support frame. The convex surfaces of the upper group of arc-shaped follower plates in the upward distribution are in contact with the inclined frames of the bracket, and the convex surfaces of the lower group of arc-shaped follower plates in the downward distribution are in contact with the corners at the bottom end of the bracket. The arc-shaped follower plates can swing along with the swaying of the bracket, and the first return spring or the second return spring makes an adaptive deformation.

[0011] Further, vertical plates facing the bracket are provided on the inner sides of the two inclined frames of the support frame. The vertical plates are located above the arc-shaped follower plates, and first roller groups and second roller groups are provided on the vertical plates in parallel distribution. Channels for accommodating the vertical plates to pass through are provided on the two inclined frames of the bracket. The first roller groups and the second roller groups are respectively located inside and outside the channels. Along with the swaying of the bracket, the two inclined frames in the bracket both sway within the gap space between the first roller groups and the second roller groups.

[0012] Further, the buffer unit includes two limiting supports symmetrically fixed to the inside of the receiving sleeve, an elastic rubber seat clamped with the limiting supports, and elastic sheets provided inside the elastic rubber seat.

[0013] The follower column is in a frustum structure inverted at the bottom inside the accommodation sleeve. One end of the elastic rubber seat abuts against the curved surface at the bottom of the follower column, and the other end extends to the inside of the limiting support. The elastic sheet is arranged inside the recessed part at one end of the elastic rubber seat extending to the inside of the limiting support. When the follower column slides inside the accommodation sleeve, the elastic rubber seat deforms adaptively until the elastic sheet deforms.

[0014] Furthermore, a limit pin penetrating through the elastic rubber seat and the elastic sheet is provided on the limiting support. Two threaded parts are arranged on the surface of the limit pin and are threadedly connected to the upper and lower ends of the limiting support respectively.

[0015] Furthermore, the elastic sheet is in a U-shaped structure, and through holes for accommodating the limit pin are provided on both symmetric legs of the elastic sheet. The through holes are in an oval structure.

[0016] Furthermore, the buffer unit further includes a fixing gasket arranged inside the follower column, a pressure spring arranged at the bottom of the fixing gasket, and a positioning gasket arranged at the bottom of the pressure spring. The positioning gasket is fixed to the support frame.

[0017] A same guiding column is arranged inside the fixing gasket, the pressure spring and the positioning gasket. The guiding column is fixed to the support frame.

[0018] Furthermore, extension arms are arranged at both ends of the support frame. The extension arms are fixed to the base through positioning rods, and two extension arms on the same side are connected through the same reinforcement support. The reinforcement support is fixed to the frame.

[0019] In summary, the technical effects and advantages of the present invention are as follows:

[0020] 1. Based on the setting of the limiting unit, when the compressor causes the mounting plate and the bracket to vibrate, it has an interception effect on the vibrating bracket, effectively reducing the vibration amplitude of the bracket, and effectively reducing the vibration frequency of the bracket and the mounting plate, reducing the influence of the vibration process of the compressor on the entire mounting structure, and further reducing the influence of the compressor on other equipment and the external environment during the vibration process.

[0021] 2. Based on the setting of the buffer unit, it can effectively absorb the impact force generated by the vibration of the mounting plate and the bracket, thereby preventing the vibration force of the bracket and the mounting plate from continuing to spread. On the basis of the limiting unit, the vibration reduction effect is further improved. Description of the Drawings

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the second viewing angle of the present invention.

[0025] Figure 3 It is a schematic diagram of the positions of the bracket and the support frame of the present invention.

[0026] Figure 4 It is a schematic diagram of the positions of the follower column and the accommodating sleeve of the present invention.

[0027] Figure 5 It is a schematic diagram of the structure of the housing sleeve after being cut open.

[0028] Figure 6 For the present invention Figure 5 Enlarged structural diagram at A in the middle.

[0029] Figure 7 It is a schematic diagram of the structure of the follower column and the accommodating sleeve after being cut apart.

[0030] Figure 8 For the present invention Figure 7 Enlarged structural diagram at B in the middle.

[0031] Figure 9 This is a schematic diagram of the structure of the limiting support and the elastic rubber seat after being cut open.

[0032] Figure 10 For the present invention Figure 9 Enlarged structural diagram at point C in the middle.

[0033] In the figure: 1. mounting plate; 2. bracket; 3. support frame; 31. extension arm; 32. reinforcement bracket; 33. positioning rod; 4. base; 5. frame; 6. follower column; 61. fixing gasket; 62. pressure spring; 63. positioning gasket; 64. guide column; 7. accommodating sleeve; 71. limiting bracket; 72. elastic rubber seat; 73. spring; 74. limit pin; 731. through hole; 8. arc follower plate; 9. connecting strip; 10. positioning plate; 11. first return spring; 12. second return spring; 13. first roller group; 14. second roller group; 15. vertical plate. DETAILED DESCRIPTION

[0034] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1: Refer to Figures 1-4 A compressor installation structure of a refrigeration unit shown in the figure, which includes a mounting plate 1 for mounting the compressor, a frame 5 fixed to the lower surface of the mounting plate 1, and a base 4 fixed to the bottom end of the frame 5.

[0036] During the operation of the compressor in a solar heat pump air conditioner unit, since the mechanical components such as pistons, rotors, or scroll disks inside the compressor are driven by a motor to rotate at a high speed, the reciprocating or rotational movement of the components will inevitably cause mechanical vibrations. At the same time, during the compression process of the refrigerant, the pressure changes suddenly (such as from low-pressure gas to high-pressure high-temperature liquid), and the fluid pulsation in the pipeline will transmit vibration energy. Moreover, when the solar heat pump air conditioner unit switches between dual operating conditions or adjusts energy by frequency conversion, the dynamic change of the compressor power may cause an instantaneous increase in vibration.

[0037] In large commercial refrigeration systems, most of the solar heat pump air conditioner units are installed on the roof, in an independent equipment room, or inside a basement. To save installation space, the installation distances of many devices in the solar heat pump air conditioner unit are relatively close. The vibration generated by the compressor itself is likely to affect other devices, affecting the safety of other devices during operation. Moreover, vibration noise is easily generated during the vibration process, affecting the surrounding environment.

[0038] To solve the above problems, as Figure 3 、 Figure 4 shown in the figure, in the present invention, two brackets 2 are arranged on the lower surface of the mounting plate 1 in a front-to-back distribution. Support frames 3 are arranged below both brackets 2, and both the brackets 2 and the support frames 3 are located inside the frame 5. Both the brackets 2 and the support frames 3 are in an inverted isosceles trapezoid structure. The two inclined frames in the bracket 2 are respectively parallel to the two inclined frames in the support frame 3, and the bottom end of the bracket 2 is located inside the support frame 3. When the mounting plate 1 vibrates due to the operation of the compressor, the connected bracket 2 can vibrate synchronously inside the support frame 3.

[0039] Limit units are arranged on the inner sides of the two inclined frames in the support frame 3 and are opposite to the inclined frames of the bracket 2. The setting of the limit units can effectively intercept the vibration phenomenon of the bracket 2, reduce the vibration amplitude of the mounting plate 1 and the bracket 2, reduce their vibration frequency, and reduce the impact of the compressor vibration phenomenon on other devices and the external environment.

[0040] Further, in the present invention, a follower post 6 is provided at the bottom end of the bracket 2, and a receiving sleeve 7 capable of accommodating the follower post 6 is provided at the center position inside the support frame 3. A buffer unit is provided inside the receiving sleeve 7. Refer to Figure 3 and Figure 4 as shown. The follower post 6 and the receiving sleeve 7 are both located between two sets of limiting units.

[0041] When the bracket 2 vibrates, the follower post 6 shakes inside the receiving sleeve 7. The setting of the buffer unit can effectively absorb the vibration force, effectively prevent the vibration force from continuing to spread, and further improve the vibration reduction effect.

[0042] Specifically, as shown in Figure 5 and Figure 6 each set of limiting units includes two sets of arc-shaped follower plates 8 arranged from top to bottom, a connecting strip 9 provided on the concave surface of each arc-shaped follower plate 8, a positioning plate 10 connected to the connecting strip 9 by a rotating shaft, and a first return spring 11 and a second return spring 12 respectively provided on both sides of the positioning plate 10. One end of the positioning plate 10 away from the connecting strip 9 is fixed to the inner side of the inclined frame body of the support frame 3, and one end of the first return spring 11 and the second return spring 12 away from the positioning plate 10 is fixed to the concave surface of the arc-shaped follower plate 8. Figure 6 As shown in, the number of each set of arc-shaped follower plates 8 is not less than two, and the two arc-shaped follower plates 8 are distributed from front to back on the inner side of the support frame 3.

[0043] When the bracket 2 vibrates inside the support frame 3, both inclined frame bodies in the vibrating state come into shaking contact with the arc-shaped follower plates 8. The two sets of arc-shaped follower plates 8 distributed from top to bottom swing as the bracket 2 shakes, and the first return spring 11 or the second return spring 12 connected to the arc-shaped follower plate 8 undergoes adaptive deformation.

[0044] Under the elastic potential energy of the first return spring 11 and the second return spring 12, the swung arc-shaped follower plate 8 can be quickly reset. During the reset movement of the arc-shaped follower plate 8, the vibrating bracket 2 can be driven to reset. Therefore, the setting of the limiting unit has an intercepting effect on the vibrating bracket 2, enabling the bracket 2 to be quickly reset after vibrating to a certain amplitude, effectively reducing the vibration amplitude of the bracket 2.

[0045] When the vibration amplitude of the bracket 2 decreases, the vibration frequency extended by the bracket 2 due to inertia during vibration can be effectively reduced, so as to achieve the purpose of reducing the vibration frequency of the bracket 2 and the mounting plate 1, reducing the impact of the compressor vibration process on the entire mounting structure, and further reducing the impact of the compressor on the remaining equipment and the external environment during the vibration process.

[0046] It should be noted that in the present invention, the convex surfaces of a group of arc-shaped follower plates 8 distributed upward all abut against the inclined frame of the bracket 2, and the convex surfaces of a group of arc-shaped follower plates 8 distributed downward all abut against the corner at the bottom end of the bracket 2. Refer to Figure 5 、 Figure 6 as shown. Therefore, during the vibration of the bracket 2, the arc-shaped follower plates 8 can make a swinging response comprehensively and quickly. Under the elastic potential energy of the first return spring 11 and the second return spring 12, the arc-shaped follower plates 8 can comprehensively prompt the bracket 2 that vibrates to a certain amplitude to quickly return to its original position.

[0047] As Figure 3 、 Figure 4 shown, when the compressor fails, it is easy to generate high-frequency and large-amplitude vibration phenomena. To ensure the safety of the mounting plate 1 and the bracket 2, in the present invention, vertical plates 15 facing the bracket 2 are provided on the inner sides of the two inclined frames in the support frame 3. The vertical plates 15 are located above the arc-shaped follower plates 8, and first roller groups 13 and second roller groups 14 are provided on the vertical plates 15 in parallel distribution. Channels for the vertical plates 15 to pass through are provided on the two inclined frames of the bracket 2, and the first roller groups 13 and the second roller groups 14 are respectively located inside and outside the channels.

[0048] As the bracket 2 shakes, the two inclined frames in the bracket 2 both shake within the gap space between the first roller group 13 and the second roller group 14. The combined first roller group 13 and second roller group 14 have a limiting effect on the bracket 2. When the mounting plate 1 and the bracket 2 generate high-frequency and large-amplitude vibration phenomena, they have a limiting effect on the bracket 2, ensuring the safety of the bracket 2 and the entire mounting structure under the fault state of the compressor.

[0049] Embodiment 2: On the basis of Embodiment 1, as Figure 7 、 Figure 8 shown, the buffer unit includes two limiting supports 71 symmetrically fixed to the inner side of the receiving sleeve 7, an elastic rubber seat 72 clamped to the limiting support 71, and a spring piece 73 provided inside the elastic rubber seat 72.

[0050] The follower column 6 is in a frustum structure at the bottom end inside the receiving sleeve 7. One end of the elastic rubber seat 72 abuts against the curved surface at the bottom end of the follower column 6, and the other end extends to the inside of the limiting support 71. The spring piece 73 is provided inside the concave part at one end of the elastic rubber seat 72 that extends to the inside of the limiting support 71. When the follower column 6 slides inside the receiving sleeve 7, the two elastic rubber seats 72 abutting against the curved surface of the follower column 6 can simultaneously undergo adaptive deformation until the spring piece 73 deforms.

[0051] Under the elastic potential energy of the shrapnel 73, the deformation response of the elastic rubber seat 72 to the swaying of the follower column 6 can effectively absorb the impact force generated by the swaying of the follower column 6, and thus can effectively absorb the vibration force of the bracket 2. In this process, it is possible to prevent the vibration force between the bracket 2 and the mounting plate 1 from continuing to spread to the remaining components. On the basis of the limiting unit, the damping effect is further improved.

[0052] As Figure 9 shown, the limiting bracket 71 is provided with a limit pin 74 passing through the elastic rubber seat 72 and the shrapnel 73. The surface of the limit pin 74 is provided with two threaded portions distributed from top to bottom, and the two threaded portions are respectively threadedly connected to the upper and lower ends of the limiting bracket 71.

[0053] The setting of the limit pin 74 can lock the elastic rubber seat 72 and the shrapnel 73 inside the limiting bracket 71 at the same time, preventing the elastic rubber seat 72 and the shrapnel 73 from detaching from the limiting bracket 71. Since the limit pin 74 is a detachable component, when the elastic rubber seat 72 and the shrapnel 73 are worn to a certain extent, replacement operations can be performed on them.

[0054] As Figure 10 shown, the shrapnel 73 has a U-shaped structure, and through holes 731 for accommodating the limit pin 74 are provided on both symmetric legs of the shrapnel 73. The through holes 731 have an elliptical structure. Due to the setting of the through holes 731 based on the elliptical structure, when the shrapnel 73 deforms under the pressure of the elastic rubber column 72, while leaving a space for the shrapnel 73 to move and deform, it does not affect the positioning effect of the limit pin 74 on the shrapnel 73. At the same time, it also reduces the frictional damage between the shrapnel 73 and the limit pin 74, ensuring the service life of the shrapnel 73.

[0055] Embodiment 3: On the basis of Embodiment 1 and Embodiment 2, as Figure 7 、 Figure 8 shown, the buffer unit further includes a fixing gasket 61 provided inside the follower column 6, a pressure spring 62 provided at the bottom end of the fixing gasket 61, and a positioning gasket 63 provided at the bottom end of the pressure spring 62. The positioning gasket 63 is fixed to the support frame 3. A same guide post 64 is provided inside the fixing gasket 61, the pressure spring 62 and the positioning gasket 63, and the guide post 64 is fixed to the support frame 3.

[0056] When the follower column 6 sways inside the receiving sleeve 7, the fixing gasket 61 squeezes the pressure spring 62 to deform. The setting of the pressure spring 62 can further absorb the impact potential energy of the follower column 6, enabling the fixing gasket 61, the follower column 6 and the bracket 2 in the swaying state to quickly return to their original positions. On the basis of the combined setting of the limiting bracket 71, the elastic rubber seat 72 and the shrapnel 73, the stability of the bracket 2 can be further improved.

[0057] As Figure 1 、 Figure 2As shown, in the present invention, in order to maintain the stability of the support frame 3, extension arms 31 are provided at both ends of the support frame 3, and the extension arms 31 are fixed to the base 4 through positioning rods 33. Moreover, two extension arms 31 on the same side are connected through the same reinforcement bracket 32, and the reinforcement bracket 32 is fixed to the frame 5. The setting of the reinforcement bracket 32 can improve the stability of the two groups of extension arms 31 symmetrically distributed and has a reinforcement effect on the support frame 3.

[0058] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A compressor installation structure for a refrigeration unit, comprising a mounting plate (1) for mounting a compressor, a frame (5) fixed to the lower surface of the mounting plate (1), and a base (4) fixed to the bottom end of the frame (5), characterized in that: The lower surface of the mounting plate (1) is provided with two brackets (2) distributed from front to back. Below each bracket (2), there is a support frame (3), and both the brackets (2) and the support frames (3) are located inside the frame (5). Both the brackets (2) and the support frames (3) are in an inverted isosceles trapezoid structure. The two inclined frames in the bracket (2) are respectively parallel to the two inclined frames in the support frame (3). The bottom end of the bracket (2) is located inside the support frame (3). Inside the two inclined frames of the support frame (3), there are limiting units facing the inclined frames of the bracket (2). A follower column (6) is provided at the bottom end of the bracket (2). At the center position inside the support frame (3), there is a receiving sleeve (7) that can accommodate the follower column (6). Inside the receiving sleeve (7), there is a buffer unit. Both the follower column (6) and the receiving sleeve (7) are located between the two groups of limiting units.

2. The compressor mounting structure of the refrigeration unit according to claim 1, wherein: Each group of the limiting units includes two arc-shaped follower plates (8) arranged from top to bottom, a connecting strip (9) provided on the concave surface of each arc-shaped follower plate (8), a positioning plate (10) connected to the connecting strip (9) through a rotating shaft, and a first return spring (11) and a second return spring (12) respectively provided on both sides of the positioning plate (10). The end of the positioning plate (10) far from the connecting strip (9) is fixed to the inner side of the inclined frame of the support frame (3). The ends of the first return spring (11) and the second return spring (12) far from the positioning plate (10) are fixed to the concave surface of the arc-shaped follower plate (8). The number of each group of arc-shaped follower plates (8) is not less than two, and the two arc-shaped follower plates (8) are distributed from front to back inside the support frame (3). The convex surfaces of the upper group of arc-shaped follower plates (8) are in contact with the inclined frames of the bracket (2). The convex surfaces of the lower group of arc-shaped follower plates (8) are in contact with the corners at the bottom end of the bracket (2). The arc-shaped follower plates (8) can swing as the bracket (2) shakes, and the first return spring (11) or the second return spring (12) undergoes adaptive deformation.

3. The compressor installation structure of the refrigeration unit according to claim 2, characterized in that: On the inner sides of the two inclined frames of the support frame (3), there are vertical plates (15) facing the bracket (2). The vertical plates (15) are located above the arc-shaped follower plates (8). On the vertical plates (15), there are a first roller group (13) and a second roller group (14) distributed in parallel. On the two inclined frames of the bracket (2), there are channels for the vertical plates (15) to pass through. The first roller group (13) and the second roller group (14) are respectively located inside and outside the channels. As the bracket (2) shakes, the two inclined frames in the bracket (2) shake within the gap space between the first roller group (13) and the second roller group (14).

4. The compressor mounting structure of the refrigeration unit according to claim 1, wherein: The buffer unit includes two limiting supports (71) symmetrically fixed to the inner side of the receiving sleeve (7), an elastic rubber seat (72) clamped to the limiting support (71), and a spring piece (73) provided inside the elastic rubber seat (72). The follower column (6) has an inverted frustum structure at the bottom inside the accommodation sleeve (7). One end of the elastic rubber seat (72) abuts against the curved surface at the bottom of the follower column (6), and the other end extends to the inside of the limiting support (71). The elastic sheet (73) is arranged inside the recessed part at one end of the elastic rubber seat (72) that extends to the inside of the limiting support (71). When the follower column (6) slides inside the accommodation sleeve (7), the elastic rubber seat (72) deforms adaptively until the elastic sheet (73) deforms.

5. The compressor installation structure of the refrigeration unit according to claim 4, characterized in that: A limit pin (74) passing through the elastic rubber seat (72) and the elastic sheet (73) is provided on the limiting support (71). Two threaded parts are arranged on the surface of the limit pin (74) and are threadedly connected to the upper and lower ends of the limiting support (71) respectively.

6. The compressor installation structure of the refrigeration unit according to claim 5, characterized in that: The elastic sheet (73) has a U-shaped structure, and through holes (731) for accommodating the limit pin (74) are provided on two symmetric legs of the elastic sheet (73). The through holes (731) have an oval structure.

7. The compressor installation structure of the refrigeration unit according to claim 4, characterized in that: The buffer unit further includes a fixed gasket (61) arranged inside the follower column (6), a compression spring (62) arranged at the bottom of the fixed gasket (61), and a positioning gasket (63) arranged at the bottom of the compression spring (62). The positioning gasket (63) is fixed to the support frame (3). A same guide post (64) is arranged inside the fixed gasket (61), the compression spring (62), and the positioning gasket (63). The guide post (64) is fixed to the support frame (3).

8. The compressor installation structure of the refrigeration unit according to claim 1, characterized in that: Extension arms (31) are provided at both ends of the support frame (3). The extension arms (31) are fixed to the base (4) through positioning rods (33), and two extension arms (31) on the same side are connected through the same reinforcement support (32). The reinforcement support (32) is fixed to the machine frame (5).

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