Scroll compressor and refrigeration equipment

Abstract

The invention discloses a scroll compressor and refrigeration equipment, the refrigeration equipment comprises the scroll compressor, the scroll compressor comprises a shell, a crankshaft, a rotor, a stator winding and a balance block, and the crankshaft is arranged in the shell; the rotor sleeves the outer side surface of the crankshaft; the stator winding is fixed in the shell; the balance block sleeves the outer side surface of the crankshaft; the counterbalance is at least partially located in the stator winding. The oil-gas mixture enters the area between the balance block and the stator winding, the oil-gas mixture collides with the balance block or the stator winding, and the coolant is separated from the refrigerant gas and can flow downwards along the side wall of the stator winding, so that oil-gas separation is realized, the oil content of exhausted gas is reduced, and the working efficiency of the scroll compressor is improved. The invention can be widely applied to the technical field of refrigeration equipment.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, and in particular to a scroll compressor and a refrigeration equipment. Background Art

[0002] A scroll compressor utilizes a fixed scroll and a movable scroll to compress an oil-gas mixture to obtain a high-pressure oil-gas mixture. The existing scroll compressors have poor oil-gas separation effects for the high-pressure oil-gas mixture. The exhaust port of the scroll compressor contains a lot of oil and the exhaust is not smooth, which seriously affects the reliability of the operation of the compressor and refrigeration equipment, thereby reducing the refrigeration efficiency. Summary of the invention

[0003] In order to solve at least one of the above technical problems, the present application provides a scroll compressor and a refrigeration device, and the technical solution adopted is as follows.

[0004] The refrigeration device provided in the present application includes a scroll compressor.

[0005] The scroll compressor provided in the present application includes a shell, a crankshaft, a rotor, a stator winding and a balancing block, wherein the crankshaft is arranged in the shell; the rotor is sleeved on the outer side surface of the crankshaft; the stator winding is fixed in the shell; the balancing block is sleeved on the outer side surface of the crankshaft; wherein the balancing block is at least partially located in the stator winding.

[0006] In some embodiments of the present application, a lower end of the balancing weight extends into the stator winding.

[0007] In certain embodiments of the present application, the lower end of the balancing weight is configured as an equal-diameter structure.

[0008] In certain embodiments of the present application, the scroll compressor includes a scroll assembly and an upper frame, wherein the scroll assembly and the upper frame are arranged in the casing, and the scroll assembly includes a fixed scroll and a movable scroll, wherein the movable scroll is connected to the crankshaft.

[0009] In certain embodiments of the present application, the scroll compressor includes an oil drain pipe, the upper end of which is disposed at an oil drain port of the upper frame, and the lower end of which extends to an oil pool at the bottom of the shell.

[0010] In certain embodiments of the present application, the crankshaft is provided with a hole, and the hole extends from the lower end to the upper end of the crankshaft.

[0011] In certain embodiments of the present application, the scroll compressor includes a vane pump, which is disposed at a lower end of the crankshaft, and the crankshaft drives the vane pump to rotate.

[0012] In certain embodiments of the present application, a side wall of the shell is provided with an exhaust port.

[0013] In certain embodiments of the present application, an air intake port is provided on the top of the shell.

[0014] The present application has at least the following beneficial effects: in a scroll compressor, the balancing block is at least partially located in the stator winding, the oil-gas mixture enters the area between the balancing block and the stator winding, the oil-gas mixture collides with the balancing block or the stator winding, the coolant is separated from the refrigerant gas, and can flow downward along the side wall of the stator winding, thereby achieving oil-gas separation, reducing the oil content of the exhaust gas, and improving the working efficiency of the scroll compressor. The present application can be widely used in the field of refrigeration equipment technology.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present application is further illustrated below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments embodied in the following drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0017] Figure 1 It is a structural schematic diagram of a scroll compressor.

[0018] Figure 2 It is a schematic diagram of the structure in which the balancing block is arranged on the crankshaft.

[0019] Figure 3 It is a schematic diagram of the structure of the bottom of the shell cavity.

[0020] Figure numerals: 110, crankshaft; 111, channel; 120, vane pump; 210, rotor; 220, stator winding; 300, balance block; 410, upper frame; 411, oil drain pipe; 420, lower frame; 510, fixed scroll; 520, movable scroll; 610, upper cover; 611, air intake; 620, middle shell; 621, exhaust port; 630, lower cover. DETAILED DESCRIPTION

[0021] The embodiments of the present application are described in detail below in conjunction with the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0022] In the description of the present application, it should be understood that the terms "center", "middle", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0023] In the description of this application, "several" means more than one, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0024] In the description of this application, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 this application can be understood according to specific circumstances.

[0025] In the description of the present application, if the reference terms "as an implementation", "an embodiment", "some instances", "some embodiments", "illustrative embodiment", "example", "specific example", "some examples", etc. appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0026] The present application relates to a refrigeration device, which comprises a scroll compressor.

[0027] The other components and operations of the refrigeration equipment have been recorded in the relevant technology for ordinary technicians in this field and will not be described in detail here. The structure of the scroll compressor will be introduced below.

[0028] The present application relates to a scroll compressor, which includes a housing, a crankshaft 110, a rotor 210, and a stator winding 220. The crankshaft 110 is disposed in the housing, the rotor 210 is sleeved on the outer side of the crankshaft 110, the stator winding 220 is fixed in the housing, and the stator winding 220 is located in the middle of the housing. Further, the scroll compressor includes a balancing block 300, which is sleeved on the outer side of the crankshaft 110, the balancing block 300 is close to the upper end of the crankshaft 110, and the rotor 210 and the stator winding 220 are located on the lower side of the balancing block 300.

[0029] The scroll compressor includes an upper frame 410, which is disposed in the housing and fixedly connected to the inner wall of the housing. The upper end of the crankshaft 110 passes through the upper frame 410, and the upper end of the crankshaft 110 is connected to the upper frame 410 via a rolling bearing.

[0030] Furthermore, the scroll compressor includes a lower frame 420, which is disposed in the housing and fixedly connected to the inner wall of the housing. The lower end of the crankshaft 110 is connected to the lower frame 420 via a rolling bearing.

[0031] As an embodiment, the scroll compressor includes a scroll assembly, which is disposed in a housing. The scroll assembly is located at the top of the housing, and the scroll assembly is connected to the upper end of the crankshaft 110 .

[0032] Specifically, the scroll assembly includes a fixed scroll 510 and an orbiting scroll 520, and the fixed scroll 510 and the orbiting scroll 520 form a compression chamber. The orbiting scroll 520 is connected to the crankshaft 110, and the crankshaft 110 drives the orbiting scroll 520 to rotate.

[0033] As an implementation manner, a suction port 611 is provided at the top of the shell, and the suction port 611 is connected to the compression chamber of the scroll assembly. The refrigerant enters the compression chamber from the suction port 611.

[0034] Specifically, the shell includes an upper cover 610 , a lower cover 630 and a middle shell 620 , the upper cover 610 is disposed at the upper end of the middle shell 620 , the lower cover 630 is disposed at the lower end of the middle shell 620 , and the air inlet 611 is disposed at the upper cover 610 .

[0035] In some examples, the side wall of the housing is provided with an exhaust port 621, and the exhaust gas of the scroll compressor is discharged from the exhaust port 621. Specifically, the exhaust port 621 is provided on the side wall of the middle housing 620, and the exhaust port 621 connects the inner cavity of the middle housing 620 with the outside.

[0036] As an implementation manner, the crankshaft 110 is provided with a hole 111 , and the hole 111 extends from the lower end to the upper end of the crankshaft 110 .

[0037] An oil pool is provided at the bottom of the inner cavity of the shell, and the lower end of the channel 111 of the crankshaft 110 is connected to the oil pool. The refrigerant oil is transported through the channel 111 to the back pressure chamber formed between the scroll assembly and the upper frame 410 to lubricate the bearing.

[0038] Further, the scroll compressor includes a vane pump 120, which is disposed at the lower end of the crankshaft 110. When the scroll compressor is working, the crankshaft 110 drives the vane pump 120 to rotate. It can be understood that under the action of the vane pump 120, the refrigeration oil in the oil pool enters the channel 111 and is transported upward.

[0039] As an embodiment, the scroll compressor includes an oil drain pipe 411, the upper end of which is arranged at the oil drain port of the upper frame 410, and the excess refrigerant oil in the back pressure chamber enters the oil drain pipe 411, and the lower end of the oil drain pipe 411 extends to the oil pool at the bottom of the shell to ensure that the oil and gas are fully separated inside the scroll compressor and reduce the oil discharge rate of the scroll compressor.

[0040] Furthermore, the lower end of the oil drain pipe 411 is lower than the liquid level of the oil pool, so as to prevent the refrigeration oil discharged from the oil drain pipe 411 from dripping on the liquid level of the oil pool, avoid splashing of the refrigeration oil, avoid mixing of the refrigeration oil into the exhaust gas, and further avoid oil-gas mixing caused by oil return from the oil drain pipe 411.

[0041] It should be noted that the balancing block 300 is at least partially located in the stator winding 220 , and the distance between the outer side surface of the balancing block 300 and the stator winding 220 is at least a set minimum electrical safety distance.

[0042] When the scroll compressor is working, when the exhaust gas is discharged from the fixed scroll 510, the gas fills the shell, and a part of the exhaust gas collides with the balancing block 300 driven to rotate by the crankshaft 110. Due to the stirring action of the balancing block 300, the refrigerant oil molecules in the exhaust gas are thrown onto the stator winding 220. In the collision with the stator winding 220, the refrigerant oil is separated from the refrigerant gas and flows downward along the outer wall of the stator winding 220 to the oil pool at the bottom of the shell, and the refrigerant gas is discharged from the exhaust port 621 of the shell.

[0043] In some examples, the lower end of the balancing weight 300 extends into the stator winding 220 .

[0044] In some examples, the lower end of the balancing block 300 is set to an equal diameter structure, the cross section of the lower end of the balancing block 300 is formed into a regular fan shape, and the distance from the edge of the balancing block to the center of rotation is equal diameter. When the gas passes between the balancing block 300 and the stator winding 220, the resistance is small, which is conducive to gas discharge, so that the refrigerant gas passes smoothly between the balancing block and the stator winding, reducing the impact on the efficiency of the scroll compressor, and can achieve oil and gas separation.

[0045] The above is a detailed description of the implementation methods of the present application in conjunction with the accompanying drawings, but the present application is not limited to the above implementation methods. Various changes can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A scroll compressor, characterized in that: include case; a crankshaft, wherein the crankshaft is disposed in the housing; A rotor, wherein the rotor is sleeved on the outer side of the crankshaft; A stator winding, wherein the stator winding is fixed in the housing; A balancing block, wherein the balancing block is sleeved on the outer side surface of the crankshaft; Wherein, the balancing mass is at least partially located in the stator winding.

2. The scroll compressor according to claim 1, characterized in that: The lower end of the balancing weight extends into the stator winding.

3. The scroll compressor according to claim 2, characterized in that: The lower end of the balancing block is configured as an equal diameter structure.

4. The scroll compressor according to claim 1, characterized in that: The scroll compressor comprises a scroll assembly and an upper frame, wherein the scroll assembly and the upper frame are arranged in the housing, and the scroll assembly comprises a fixed scroll and a movable scroll, wherein the movable scroll is connected to the crankshaft.

5. The scroll compressor according to claim 4, characterized in that: The scroll compressor comprises an oil drain pipe, the upper end of which is arranged at the oil drain port of the upper frame, and the lower end of which extends to the oil pool at the bottom of the shell.

6. The scroll compressor according to claim 1, characterized in that: The crankshaft is provided with a bore extending from a lower end to an upper end of the crankshaft.

7. The scroll compressor according to claim 6, characterized in that: The scroll compressor includes a vane pump, which is arranged at the lower end of the crankshaft, and the crankshaft drives the vane pump to rotate.

8. The scroll compressor according to claim 1, characterized in that: The side wall of the shell is provided with an exhaust port.

9. The scroll compressor according to claim 1, characterized in that: The top of the shell is provided with an air intake port.

10. A refrigeration device, characterized in that: It comprises a scroll compressor as claimed in any one of claims 1 to 9.

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