Transmission fixing structure for compressor and compressor

Abstract

The invention relates to the technical field of compressors, in particular to a transmission fixing structure for a compressor and the compressor comprising the transmission fixing structure. The transmission fixing structure comprises a connecting frame, the connecting frame is provided with a connecting body, the connecting body is fixedly arranged on an outer shell of a transmission and connected with a compressor shell in the compressor shell, a through hole and a through-flow hole which are through in the axial direction are formed in the connecting body, and the outer shell or a shaft penetrates through the through hole; the shaft is a power shaft or a crankshaft of the compressor or an input shaft or an output shaft of the transmission, and the through-flow hole avoids the transmission and communicates with the space, located on the two sides of the connecting body, in the compressor shell. The transmission shell and the compressor shell are supported and connected by the connecting main body of the connecting frame in the compressor shell, so that the transmission is fixedly mounted in the compressor shell, and meanwhile, the gas through-flow and oil return requirements in the compressor are met through the through-flow hole in the connecting main body of the connecting frame; a transmission can be additionally arranged in the compressor.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a transmission fixing structure for a compressor and a compressor comprising the transmission fixing structure for a compressor. Background Art

[0002] At present, in order to improve the overall efficiency of the compressor and the flow regulation ratio of the compressor, it is considered to add a transmission between the motor and the pump body inside the compressor, so that the motor and pump body of the compressor can run at different speeds. As a newly added independent component, the connection and fixation method of the transmission with the associated components inside the compressor is crucial. Since the addition of the transmission will increase the overall axial length of the compressor, and make it easy for the transmission to have coaxiality problems with the motor and pump body, thus affecting the stability of the compressor operation, how to install and fix the transmission inside the compressor and ensure the overall axial stability of the compressor has become an urgent problem to be solved. Summary of the invention

[0003] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a transmission fixing structure for a compressor, which can fix the transmission inside the compressor and ensure the overall axial stability of the compressor, thereby realizing the addition of a transmission inside the compressor.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The present invention provides a transmission fixing structure for a compressor, comprising a connecting frame, the connecting frame having a connecting body, the connecting body being fixedly arranged on an outer shell of the transmission and connected to the compressor shell inside the compressor shell, the connecting body being provided with a through hole and a flow hole which penetrate in the axial direction, the through hole being provided for the outer shell or a shaft to pass through, the shaft being a power shaft or a crankshaft of the compressor or an input shaft or an output shaft of the transmission, the flow hole avoiding the transmission setting and connecting the space on both sides of the connecting body inside the compressor shell.

[0006] Preferably, the connecting body is fixedly arranged on the outer shell at the input end or the output end of the transmission, and the shaft passes through the through hole.

[0007] Preferably, a journal extends from the outer peripheral edge of the through hole on the side of the connecting body facing away from the outer shell, and the journal supports the power shaft or the crankshaft.

[0008] Preferably, an oil groove is provided on the inner circumferential surface of the journal.

[0009] Preferably, a side surface of the connecting body facing the outer shell is partially recessed to form an avoidance groove, the avoidance groove is used to accommodate the input end or the output end of the transmission, and the through hole passes through the bottom wall of the avoidance groove.

[0010] Preferably, the connecting body is fixedly arranged on the outer shell between the input end and the output end of the transmission, and the outer shell is penetrated by the through hole.

[0011] Preferably, the connecting body is fixedly connected to the outer shell or is an integral part designed in one piece.

[0012] Preferably, a first connecting hole is provided on the connecting body, and the first connecting hole is connected to the outer shell through a first fastener, or the connecting body and the outer shell are cast into an integral piece of an integral design.

[0013] Preferably, a second connecting hole is provided on the connecting body, and the second connecting hole is connected to the compressor housing via a second fastener, or the connecting body is welded to the compressor housing.

[0014] The present invention also provides a compressor, comprising the compressor transmission fixing structure as described above.

[0015] Compared with the prior art, the present invention has significant improvements:

[0016] The transmission fixing structure for a compressor of the present invention supports the outer shell of the transmission and the compressor shell inside the compressor shell through the connecting body of the connecting frame, and can ensure the overall axial coaxiality of the compressor while realizing the installation and fixation of the transmission inside the compressor shell. In addition, the flow holes on the connecting body of the connecting frame can also meet the gas flow and oil return requirements inside the compressor, so that the additional connecting frame and transmission structure will not affect or damage the function of the compressor. Therefore, the transmission fixing structure for a compressor of the present invention adopts the connecting frame to fix the transmission inside the compressor, and the connecting frame ensures the overall axial coaxiality of the compressor, so that the transmission can be added inside the compressor, while ensuring the stability of the compressor operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the assembly of the compressor transmission fixing structure in the compressor according to the first embodiment of the present invention.

[0018] Figure 2 yes Figure 1 A schematic structural diagram of a connecting frame in a transmission fixing structure for a compressor is shown.

[0019] Figure 3 It is a structural schematic diagram of a connecting frame in a compressor transmission fixing structure according to a second embodiment of the present invention.

[0020] Figure 4 It is a schematic diagram of the assembly of the compressor transmission fixing structure in the compressor according to the third embodiment of the present invention.

[0021] Figure 5It is a schematic diagram of the coordination between the transmission fixing structure for a compressor and the transmission according to the fourth embodiment of the present invention.

[0022] Figure 6 yes Figure 5 A schematic structural diagram of a connecting frame in a transmission fixing structure for a compressor is shown.

[0023] Figure 7 It is a schematic diagram of the assembly of the compressor transmission fixing structure in the compressor according to the fifth embodiment of the present invention.

[0024] Figure 8 yes Figure 7 A schematic diagram of the cooperation between the connecting frame and the transmission in the transmission fixing structure for a compressor is shown.

[0025] Fig. 9 yes Figure 8 Schematic top view of .

[0026] Fig.10 It is a schematic diagram of the coordination between the connecting frame and the transmission in the transmission fixing structure for a compressor according to the sixth embodiment of the present invention.

[0027] Fig.11 yes Fig.10 Schematic top view of .

[0028] The reference numerals are described as follows:

[0029] 100 Connection rack

[0030] 1 Connect the main body

[0031] 2 Through holes

[0032] 3 Flow holes

[0033] 4 Journal

[0034] 5 Oil tank

[0035] 6. Skirt

[0036] 7 First connection hole

[0037] 8 Second connection hole

[0038] 9 Avoidance slot

[0039] 200 Transmission

[0040] 201 Input

[0041] 202 Output

[0042] 203 outer shell

[0043] 300 Power shaft

[0044] 400 rotor

[0045] 500 Pump body

[0046] 600 Crankshaft DETAILED DESCRIPTION

[0047] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, but not to limit the present invention.

[0048] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0051] Embodiment 1

[0052] like Figure 1 and Figure 2 The figure shows the first embodiment of the compressor transmission fixing structure provided by the present invention. The compressor transmission fixing structure of the first embodiment is used to realize the installation and fixing of the transmission 200 inside the compressor and ensure the overall axial coaxiality of the compressor.

[0053] The transmission 200 has an input end 201, an output end 202 and an outer shell 203. The input end 201 of the transmission 200 is used to receive the rotational power of the power shaft 300, and the input end 201 is connected to the power shaft 300 through the input shaft and rotates synchronously. The output end 202 of the transmission 200 is used to output torque to the rotating mechanism, and the output end 202 is connected to the transmission mechanism through the output shaft and rotates synchronously. The input end 201 and the output end 202 of the transmission 200 are connected by a transmission mechanism for speed reduction transmission to achieve asynchronous operation of the power shaft 300 and the rotating mechanism. The form of the transmission mechanism is not limited, for example, gear transmission can be used. Generally, the transmission mechanism of the transmission 200 is built into the outer shell 203, and the input end 201 and / or the output end 202 of the transmission 200 can be located in the outer shell 203, and a part (the end of the input shaft and / or the output shaft) can extend or slightly protrude outside the outer shell 203.

[0054] When a transmission 200 is added inside the compressor, the input end 201 of the transmission 200 is connected to the power shaft 300 through the input shaft and rotates synchronously. The input shaft of the transmission 200 and the power shaft 300 are preferably connected by a key to achieve synchronous rotation; the power shaft 300 is connected to the rotor 400 of the compressor motor. The power shaft 300 and the rotor 400 are preferably fixedly connected by an interference fit. The power shaft 300 rotates under the drive of the rotor 400, driving the input end 201 of the transmission 200 to rotate synchronously. The rotating power is transmitted through the transmission 20 0 transmission mechanism is decelerated and transmitted to the output end 202 of the transmission 200; the output end 202 of the transmission 200 is connected to the crankshaft 600 penetrating the pump body 500 through the output shaft and rotates synchronously. The output shaft of the transmission 200 and the crankshaft 600 are preferably connected by interference fit to achieve synchronous rotation; when the crankshaft 600 rotates in the pump body 500, the eccentric part on the crankshaft 600 drives the piston to make eccentric movement in the pump body 500 to achieve compression of the working medium entering the pump body 500, that is, to achieve the operation of the pump body 500. By adding a transmission 200 between the power shaft 300 on the motor side and the crankshaft 600 on the pump body 500 side, the asynchronous operation of the motor and the pump body 500 can be achieved, which can improve the efficiency of the compressor.

[0055] The motor and pump body 500 of the compressor are both built into the compressor housing. Therefore, when a transmission 200 is added between the power shaft 300 on the motor side and the crankshaft 600 on the pump body 500 side, the transmission 200 needs to be fixed on the compressor housing as a whole to fix the transmission 200 inside the compressor housing. At the same time, since the addition of the transmission will lead to an increase in the overall axial length of the compressor, it is necessary to ensure the coaxiality between the motor, the transmission 200 and the pump body 500 (i.e. the overall axial coaxiality of the compressor). In addition, considering the gas flow and oil return inside the compressor, the outer diameter of the outer shell 203 of the transmission 200 should be smaller than the inner diameter of the compressor housing, so that there is a gap between the outer shell 203 of the transmission 200 and the compressor housing. Based on the above reasons, a specific structure needs to be designed to support and fix the transmission 200 inside the compressor. Based on this, Embodiment 1 of the present invention provides a transmission fixing structure for a compressor.

[0056] See also Figure 1 and Figure 2The transmission fixing structure for the compressor of the first embodiment includes a connecting frame 100, which has a connecting body 1. The connecting body 1 is fixed on the outer shell 203 of the transmission 200. When the transmission 200 is arranged between the power shaft 300 on the compressor motor side and the crankshaft 600 on the pump body 500 side, the connecting frame 100 is also located between the power shaft 300 on the motor side and the crankshaft 600 on the pump body 500 side. The connecting body 1 is connected to the compressor housing inside the compressor housing, so as to support and fix the transmission 200 inside the compressor, and improve the stability of the transmission 200, so that when the compressor is running, it will not be displaced due to vibration, thereby causing the coaxiality between the transmission 200 and the motor and the pump body 500 to deviate, thereby preventing the compressor from having coaxiality problems in the axial direction as a whole, and improving the stability of the compressor operation. The connecting body 1 is provided with a through hole 2 and a flow hole 3 that penetrate along the axial direction. The through hole 2 is for a shaft to pass through, and the shaft is the power shaft 300 or the crankshaft 600 of the compressor or the input shaft of the transmission 200 or the output shaft of the transmission 200, so that the power shaft 300 and the crankshaft 600 located on both sides of the connecting body 1 can be connected to the input shaft and the output shaft of the transmission 200 respectively. The flow hole 3 avoids the setting of the transmission 200, that is, on the cross section perpendicular to the axis of the connecting frame 100, the projection of the flow hole 3 is located on the outer peripheral side of the projection of the outer shell 203 of the transmission 200, so that the flow hole 3 can connect the space inside the compressor shell located on both sides of the connecting body 1, that is, the motor side cavity inside the compressor shell and the pump body 500 side cavity are separated by the connecting body 1 of the connecting frame 100 and connected through the flow hole 3 on the connecting body 1, so that when the connecting frame 100 supports the outer shell 203 of the transmission 200 and the compressor shell inside the compressor shell through the connecting body 1, the gas flow and oil return requirements inside the compressor are met through the flow hole 3 on the connecting body 1, so that the additional connecting frame 100 and the transmission 200 structure will not affect or damage the function of the compressor. Therefore, the compressor transmission fixing structure of the first embodiment adopts the connecting frame 100 to fix the transmission 200 inside the compressor, so that the transmission 200 can be added inside the compressor.

[0057] In the first embodiment, in order to ensure the flow effect, preferably, a plurality of flow holes 3 are provided on the connection body 1 of the connection frame 100, and the plurality of flow holes 3 are distributed at intervals along the circumferential direction, and on the cross section perpendicular to the axis of the connection frame 100, the projections of the plurality of flow holes 3 are on the outer peripheral side of the projection of the outer housing 203 of the transmission 200. Preferably, the flow holes 3 are arc-shaped long holes extending along the circumferential direction, which is conducive to increasing the flow area.

[0058] In the first embodiment, preferably, the connecting body 1 of the connecting frame 100 is fixed on the outer shell 203 at the input end 201 of the transmission 200, and the power shaft 300 or the input shaft of the transmission 200 is penetrated through the through hole 2. The connecting body 1 of the connecting frame 100 is fixed on an end face of the outer shell 203 of the transmission 200 close to the motor side, and the through hole 2 on the connecting body 1 is for the power shaft 300 or the input shaft of the transmission 200 to pass through, so that the input shaft of the transmission 200 can be easily connected to the power shaft 300 on the motor side. Among them, it is more preferable that the input shaft of the transmission 200 is located in the outer shell 203 or slightly protrudes outside the outer shell 203, and the power shaft 300 is penetrated through the through hole 2, which is conducive to reducing the axial size of the compressor. In order to avoid the connection body 1 of the connecting frame 100 affecting the rotation of the power shaft 300 or the input shaft of the transmission 200, the power shaft 300 or the input shaft of the transmission 200 is rotated with the through hole 2 on the connecting body 1.

[0059] In the first embodiment, preferably, a journal 4 is extended from the outer peripheral edge of the through hole 2 on the side of the connecting body 1 of the connecting frame 100 away from the outer shell 203 of the transmission 200, and the journal 4 supports the power shaft 300, and the power shaft 300 is loosely matched with the journal 4. The connecting body 1 of the connecting frame 100 is fixed on the outer shell 203 at the input end 201 of the transmission 200, and the power shaft 300 or the input shaft of the transmission 200 is inserted through the through hole 2, and the journal 4 of the connecting frame 100 is located on the side of the connecting body 1 close to the motor side, and the power shaft 300 on the motor side can be inserted through the journal 4 of the connecting frame 100 and connected to the input shaft of the transmission 200. The support for the power shaft 300 on the motor side can be enhanced through the journal 4, thereby greatly reducing the load of the rolling bearing inside the transmission 200, especially under high speed conditions, the stability of the operation of the transmission mechanism inside the transmission 200 can be ensured. By designing the journal 4 on the connecting frame 100, an oil film is formed in the gap between the journal 4 and the power shaft 300, which can play the role of a sliding bearing. Sliding bearings can be added to the entire shaft system of the compressor, thereby improving the operating stability of the compressor.

[0060] Furthermore, an oil groove 5 is provided on the inner circumferential surface of the journal 4 of the connecting frame 100 , and lubricating oil can be introduced through the oil groove 5 to form an oil film in the gap between the journal 4 and the power shaft 300 , thereby realizing the sliding bearing function and ensuring operational reliability.

[0061] Preferably, a skirt 6 is provided on the outer circumferential surface of one end where the journal 4 of the connecting frame 100 intersects with the connecting body 1 to increase the strength.

[0062] In the first embodiment, one implementation method of the connection body 1 of the connection frame 100 being fixedly arranged on the outer shell 203 of the transmission 200 is: the connection body 1 is fixedly connected to the outer shell 203 of the transmission 200. The method of fixedly connecting the connection body 1 and the outer shell 203 is not limited. Preferably, the connection body 1 of the connection frame 100 is provided with a first connection hole 7, and the first connection hole 7 is connected to the outer shell 203 of the transmission 200 through a first fastener. In order to increase the connection strength and stability, a plurality of first connection holes 7 are provided on the connection body 1, and the plurality of first connection holes 7 are distributed at intervals along the circumference of the connection body 1, and each first connection hole 7 is connected to the outer shell 203 of the transmission 200 through a first fastener. Preferably, the first connection hole 7 is a bolt hole with an internal thread, and the first fastener is a bolt with an external thread, and the connection body 1 is connected and fixed to the outer shell 203 through the threaded matching connection between the bolt and the bolt hole.

[0063] Another implementation method of fixing the connecting body 1 of the connecting frame 100 on the outer shell 203 of the transmission 200 is that the connecting body 1 of the connecting frame 100 and the outer shell 203 are integrally designed as a whole. This can reduce the number of assembly steps. Preferably, the connecting body 1 and the outer shell 203 are cast as an integrally designed whole.

[0064] In the first embodiment, one implementation method of connecting the connecting body 1 of the connecting frame 100 to the compressor housing is as follows: a second connecting hole 8 is provided on the connecting body 1 of the connecting frame 100, and the second connecting hole 8 is connected to the compressor housing through a second fastener, thereby fixing the connecting body 1 to the compressor housing. An inner flange can be provided on the inner surface of the compressor housing, and the second fastener connects the second connecting hole 8 and the inner flange, thereby connecting and fixing the connecting body 1 to the inner flange on the inner surface of the compressor housing. In order to increase the connection strength and stability, a plurality of second connecting holes 8 are provided on the connecting body 1, and the plurality of second connecting holes 8 are distributed at intervals along the circumference of the connecting body 1, and each second connecting hole 8 is connected to the compressor housing through a second fastener. Preferably, the second connecting hole 8 is a bolt hole with an internal thread, and the second fastener is a bolt with an external thread, and the connecting body 1 is connected and fixed to the compressor housing through the threaded matching connection between the bolt and the bolt hole. To achieve the assembly of the transmission 200 inside the compressor housing, the circumference of all the second connection holes 8 on the connecting body 1 for connecting to the compressor housing should be located on the outer circumference of all the first connection holes 7 for connecting to the outer shell 203 of the transmission 200.

[0065] Another implementation method of connecting the connecting body 1 of the connecting frame 100 with the compressor housing is: the connecting body 1 of the connecting frame 100 is welded to the compressor housing to achieve fixed connection between the connecting body 1 and the compressor housing.

[0066] Embodiment 2

[0067] like Figure 3 As shown, it is a second embodiment of the transmission fixing structure for a compressor provided by the present invention. The second embodiment is basically the same as the first embodiment, and the similarities are not repeated here. The difference is that in the second embodiment, on the basis of fixing the connecting body 1 of the connecting frame 100 on the input end 201 of the transmission 200 on the outer shell 203, and the power shaft 300 or the input shaft of the transmission 200 is passed through the through hole 2, considering that the input end 201 of the transmission 200 gives way, preferably, the connecting body 1 of the connecting frame 100 is partially recessed on one side of the outer shell 203 of the transmission 200 to form an avoidance groove 9, and the avoidance groove 9 is used to accommodate the input end 201 of the transmission 200, and the through hole 2 passes through the bottom wall of the avoidance groove 9, thereby ensuring that the connecting body 1 of the connecting frame 100 can be connected to an end face of the outer shell 203 of the transmission 200 close to the motor side and connected and fixed by the first fastener passing through the first connecting hole 7.

[0068] Embodiment 3

[0069] like Figure 4 As shown, it is the third embodiment of the transmission fixing structure for the compressor provided by the present invention. The third embodiment is basically the same as the first embodiment, and the similarities are not repeated here. The difference is that in the third embodiment, the connecting body 1 of the connecting frame 100 is fixed on the outer shell 203 at the output end 202 of the transmission 200, and the crankshaft 600 or the output shaft of the transmission 200 is passed through the through hole 2. The connecting body 1 of the connecting frame 100 is fixed on an end face of the outer shell 203 of the transmission 200 close to the pump body 500 side, and the through hole 2 on the connecting body 1 is for the crankshaft 600 or the output shaft of the transmission 200 to pass through, so that the output shaft of the transmission 200 can be easily connected to the crankshaft 600 on the pump body 500 side. Among them, it is more preferable that the output shaft of the transmission 200 is located in the outer shell 203 or slightly protrudes outside the outer shell 203, and the crankshaft 600 is passed through the through hole 2, which is conducive to reducing the axial size of the compressor. In order to prevent the connection body 1 of the connection frame 100 from affecting the rotation of the crankshaft 600 or the output shaft of the transmission 200 , the crankshaft 600 or the output shaft of the transmission 200 is rotationally matched with the through hole 2 on the connection body 1 .

[0070] In the third embodiment, the journal 4 supports the crankshaft 600, and the crankshaft 600 and the journal 4 are in clearance fit. The connecting body 1 of the connecting frame 100 is fixedly arranged on the outer shell 203 at the output end 202 of the transmission 200. When the crankshaft 600 or the output shaft of the transmission 200 is inserted into the through hole 2, the journal 4 of the connecting frame 100 is located on a side surface of the connecting body 1 close to the pump body 500. The crankshaft 600 on the pump body 500 side can be inserted into the journal 4 of the connecting frame 100 and connected to the output shaft of the transmission 200. The journal 4 can enhance the support for the crankshaft 600 on the pump body 500 side, thereby greatly reducing the load of the rolling bearing inside the transmission 200, especially under high speed conditions, the stability of the transmission mechanism inside the transmission 200 can be ensured. By designing the journal 4 on the connecting frame 100, an oil film is formed in the gap between the journal 4 and the crankshaft 600, which can play the role of a sliding bearing, and can add a sliding bearing to the entire shaft system of the compressor, thereby improving the operating stability of the compressor.

[0071] In the third embodiment, on the basis that the connecting body 1 of the connecting frame 100 is fixed on the outer shell 203 at the output end 202 of the transmission 200 and the crankshaft 600 or the output shaft of the transmission 200 is passed through the through hole 2, it is also possible to consider giving way to the output end 202 of the transmission 200. Preferably, as in the second embodiment, the connecting body 1 of the connecting frame 100 is partially recessed on one side of the outer shell 203 of the transmission 200 to form an avoidance groove 9, and the avoidance groove 9 is used to accommodate the output end 202 of the transmission 200. The through hole 2 passes through the bottom wall of the avoidance groove 9, thereby ensuring that the connecting body 1 of the connecting frame 100 can be connected to an end face of the outer shell 203 of the transmission 200 close to the pump body 500 and connected and fixed by a first fastener passing through the first connecting hole 7.

[0072] Embodiment 4

[0073] like Figure 5 and Figure 6As shown, it is the fourth embodiment of the transmission fixing structure for a compressor provided by the present invention. Embodiment 4 is basically the same as Embodiment 1, and the similarities are not repeated here. The difference is that in this embodiment 4, no journal 4 is provided on the side of the connecting body 1 of the connecting frame 100. The connecting frame 100 of this embodiment 4 can be suitable for compressors with smaller loads, and the structure can be simplified. There is no restriction on the position where the connecting body 1 of the connecting frame 100 of this embodiment 4 is fixed on the outer shell 203 of the transmission 200. The connecting body 1 of the connecting frame 100 can be fixed on the outer shell 203 at the input end 201 of the transmission 200 as in Embodiment 1 or Embodiment 2; or the connecting body 1 of the connecting frame 100 can be fixed on the outer shell 203 at the output end 202 of the transmission 200 as in Embodiment 3; and the connecting body 1 of the connecting frame 100 can also be connected to the outer circumferential surface of the outer shell 203 of the transmission 200 by changing the size of the through hole 2 on the connecting body 1.

[0074] Figure 5 It is shown that the input shaft (or output shaft) of the transmission 200 is inserted into the through hole 2 , but the fourth embodiment is not limited thereto. The power shaft 300 , the crankshaft 600 , or the outer shell 203 of the transmission 200 may also be inserted into the through hole 2 .

[0075] Embodiment 5

[0076] like Figures 7 to 9 As shown, it is the fifth embodiment of the transmission fixing structure for the compressor provided by the present invention. The fifth embodiment is basically the same as the fourth embodiment, and the similarities are not repeated here. The difference is that in the fifth embodiment, the connecting body 1 of the connecting frame 100 is fixed on the outer shell 203 between the input end 201 of the transmission 200 and the output end 202 of the transmission 200, and the outer shell 203 is penetrated by the through hole 2, that is, the connecting body 1 of the connecting frame 100 is sleeved on the outer peripheral surface of the outer shell 203 through the through hole 2. Thus, the connecting frame 100 is located between the input end 201 of the transmission 200 and the output end 202 of the transmission 200, and the input end 201 of the transmission 200 and the output end 202 of the transmission 200 can be conveniently connected to the power shaft 300 on the motor side and the crankshaft 600 on the pump body 500 side, respectively. At this time, preferably, the connecting body 1 of the connecting frame 100 and the outer shell 203 are an integral part of an integral design.

[0077] In the fifth embodiment, a second connection hole 8 is provided on the connection body 1 of the connection frame 100, and the second connection hole 8 is connected to the compressor housing through a second fastener, so that the connection body 1 is fixedly connected to the compressor housing.

[0078] Embodiment 6

[0079] like Figure 10 to Figure 11The sixth embodiment of the transmission fixing structure for a compressor provided by the present invention is shown in FIG. The sixth embodiment is basically the same as the fifth embodiment, and the similarities are not repeated here. The difference is that in the sixth embodiment, the connecting body 1 of the connecting frame 100 is welded to the compressor housing to achieve a fixed connection between the connecting body 1 and the compressor housing.

[0080] Embodiment 7

[0081] Embodiment 7 provides an embodiment of the compressor of the present invention. The compressor of the embodiment 7 includes the compressor transmission fixing structure of the present invention, and the compressor transmission fixing structure is any one of the compressor transmission fixing structures described in the above embodiments 1 to 6.

[0082] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A transmission fixing structure for a compressor, characterized in that: The invention comprises a connecting frame (100), wherein the connecting frame (100) has a connecting body (1), wherein the connecting body (1) is fixedly arranged on an outer shell (203) of a transmission (200) and connected to the compressor shell inside the compressor shell, wherein the connecting body (1) is provided with a through hole (2) and a flow hole (3) which penetrate in the axial direction, wherein the through hole (2) is provided for the outer shell (203) or a shaft to pass through, wherein the shaft is a power shaft (300) or a crankshaft (600) of the compressor or an input shaft or an output shaft of the transmission (200), and wherein the flow hole (3) is arranged to avoid the transmission (200) and is connected to the space inside the compressor shell located on both sides of the connecting body (1).

2. The compressor transmission fixing structure according to claim 1, characterized in that: The connecting body (1) is fixedly mounted on the outer shell (203) at the input end (201) or the output end (202) of the transmission (200), and the shaft is passed through the through hole (2).

3. The compressor transmission fixing structure according to claim 2, characterized in that: A journal (4) extends from the outer peripheral edge of the through hole (2) on one side of the connecting body (1) facing away from the outer shell (203), and the journal (4) supports the power shaft (300) or the crankshaft (600).

4. The compressor transmission fixing structure according to claim 3, characterized in that: An oil groove (5) is provided on the inner peripheral surface of the journal (4).

5. The compressor transmission fixing structure according to claim 2, characterized in that: A side surface of the connecting body (1) facing the outer shell (203) is partially recessed to form an escape groove (9), the escape groove (9) being used to accommodate an input end (201) or an output end (202) of the transmission (200), and the through hole (2) passes through the bottom wall of the escape groove (9).

6. The compressor transmission fixing structure according to claim 1, characterized in that: The connecting body (1) is fixedly arranged on the outer shell (203) between the input end (201) and the output end (202) of the transmission (200), and the outer shell (203) is penetrated by the through hole (2).

7. The compressor transmission fixing structure according to claim 1, characterized in that: The connecting body (1) and the outer shell (203) are fixedly connected or are an integral part designed as one piece.

8. The compressor transmission fixing structure according to claim 7, characterized in that: The connecting body (1) is provided with a first connecting hole (7), and the first connecting hole (7) is connected to the outer shell (203) via a first fastener, or the connecting body (1) and the outer shell (203) are cast into an integral part of an integral design.

9. The compressor transmission fixing structure according to claim 1, characterized in that: The connecting body (1) is provided with a second connecting hole (8), and the second connecting hole (8) is connected to the compressor housing via a second fastener, or the connecting body (1) is welded to the compressor housing.

10. A compressor, characterized in that: It comprises a transmission fixing structure for a compressor as claimed in any one of claims 1 to 9.

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