Scroll compressor with angle-adjustable gas folding sheet

Abstract

The invention discloses a scroll compressor with an angle-adjustable gas folding sheet, and relates to the technical field of compressors, in particular to the scroll compressor with the angle-adjustable gas folding sheet. The angle-adjustable air folding sheet is arranged on the inner wall, right opposite to an air suction port of the refrigeration compressor, of a shell; the control structure is arranged right above the angle-adjustable air folding sheet; the external controller is connected with the control structure and the motor stator through wires, and the external controller receives the temperature of the motor stator so as to regulate and control the action of the control structure. When the compressor operates, a low-temperature and low-pressure refrigerant enters from the air suction port, flows through the angle-adjustable air folding sheet, enters the shell cavity, then enters the scroll plate structure, is compressed to a high-temperature and high-pressure state and is exhausted from the exhaust port. According to the technical scheme, the problems that in the prior art, an upper baffle is fixed at a large angle, and compressor faults are caused by insufficient motor cooling due to small refrigerant circulation amount are solved; and the upper baffle is fixed at a smaller angle, so that the motor is cooled too much due to the increase of the refrigerant circulation volume, and higher efficiency cannot be met.

Description

Technical Field

[0001] The invention discloses a scroll compressor with an angle-adjustable air deflector, and relates to the technical field of compressors, and in particular, to a scroll compressor with an angle-adjustable air deflector. Background Art

[0002] When the scroll compressor arranges the air intake port on the upper part of the motor stator, in order to guide the flow direction of the inhaled refrigerant, an air deflector is usually provided on the inner wall of the shell directly opposite the air intake port so as to use the low-temperature refrigerant to cool the motor stator. The air deflector is usually provided with an upper baffle with a fixed angle and is an integrated structure with the fixed body. When the compressor uses such an air deflector with a fixed upper baffle angle and a large angle, the small amount of refrigerant circulation may cause insufficient cooling of the motor and cause compressor failure when operating under low evaporation temperature conditions. To solve this problem, the compressor may use an air deflector with a smaller angle to increase motor cooling, but when operating under medium evaporation temperature conditions, the increase in refrigerant circulation may cause excessive cooling of the motor and fail to meet higher efficiency.

[0003] In view of the problems existing in the above-mentioned prior art, it is very necessary to study and design a new scroll compressor with angle-adjustable air deflectors to overcome the problems existing in the prior art. Summary of the invention

[0004] According to the above-mentioned prior art, a large angle fixed upper baffle is used, which leads to insufficient cooling of the motor due to the small amount of refrigerant circulation, thus causing compressor failure; a small angle fixed upper baffle is used, which leads to excessive cooling of the motor due to the increase in the amount of refrigerant circulation, and cannot meet the higher efficiency and other technical problems, and a scroll compressor with an angle-adjustable air-baffle is provided. The present invention mainly changes the cooling effect of the refrigerant on the motor stator by changing the fixed air-baffle upper baffle into an angle-adjustable structure, thereby improving the ability of the compressor to adapt to different operating conditions; at the same time, it also changes the amount of refrigeration oil sucked into the scroll disk, so as to improve the oil circulation during the operation of the compressor, and improve the refrigeration capacity under the premise of ensuring lubrication.

[0005] The technical means adopted by the present invention are as follows:

[0006] A scroll compressor with an adjustable angle deflector comprises: a housing provided with an air inlet, a movable scroll, a fixed scroll, an upper support, and a driving assembly; the housing is provided with a movable scroll and a fixed scroll that cooperate with each other, and can complete the compressor work of the refrigerant; the upper support is welded on the inner wall of the housing near the upper part of the air inlet, and supports the movable scroll and the fixed scroll; the driving assembly comprises a crankshaft of an internal oil delivery channel, a motor rotor, and a motor stator;

[0007] Furthermore, the scroll compressor with an angle-adjustable air deflector comprises: an angle-adjustable air deflector, a control structure and an external controller;

[0008] Furthermore, the angle-adjustable air deflector is arranged on the inner wall of the shell directly facing the air inlet of the refrigeration compressor;

[0009] Furthermore, the control structure is arranged directly above the angle-adjustable air-bending sheet;

[0010] Furthermore, the external controller is connected to the control structure and the motor stator through a wire, and the external controller receives the temperature of the motor stator to regulate the action of the control structure;

[0011] Furthermore, when the compressor is running, low-temperature and low-pressure refrigerant enters from the air intake port, flows through the angle-adjustable air deflector into the shell cavity and then enters the scroll structure, is compressed to a high-temperature and high-pressure state and is discharged from the exhaust port.

[0012] Furthermore, the angle-adjustable air-bending sheet comprises: a fixed body and an upper cover plate;

[0013] Furthermore, the fixed body is welded to the inner wall of the refrigeration compressor housing and is located at the rear inner side of the refrigeration compressor suction port;

[0014] The bottom end of the upper cover plate is hinged to the top end of the fixed body.

[0015] Furthermore, the rotation range of the upper cover plate after joining with the fixed body is 0-90°.

[0016] Furthermore, the upper cover plate is located between the air intake port and the upper support.

[0017] Furthermore, the lower opening of the fixed body is located between the lower opening and the motor stator; when the compressor is running, the refrigerant is sucked in from the air intake port and enters the shell cavity from the upper cover plate and the lower opening of the folding plate respectively, wherein the refrigerant entering from the upper cover plate can provide more refrigerant oil for the scroll plate, and the refrigerant entering from the lower opening can cool the motor stator.

[0018] Further, the control mechanism includes: a transmission mechanism, a transmission rod and a signal transmission terminal;

[0019] Furthermore, the transmission mechanism is fixed on the inner wall of the refrigeration compressor housing above the angle-adjustable air-bending plate through a bracket;

[0020] Furthermore, the bottom end of the transmission rod of the transmission mechanism is hinged to the top end of the upper cover plate, driving the upper cover plate to rotate at any angle within 0-90°;

[0021] Furthermore, the signal transmission terminal is fixedly mounted on the outer wall of the refrigeration compressor housing and is connected to the transmission mechanism through a wire; the signal transmission terminal receives a signal sent by an external controller to control the transmission mechanism to operate.

[0022] Furthermore, the signal transmission form of the external controller adopts one of an independent structure and an integrated structure;

[0023] Furthermore, the signal transmission form of the external controller adopts an independent structure, that is, the signal transmission terminal and the motor stator temperature signal output terminal are respectively arranged on the compressor housing, and are respectively connected to the external controller through wires;

[0024] Furthermore, the signal transmission form of the external controller adopts an integrated structure, that is, the signal transmission terminal and the motor stator temperature signal output terminal are integrated together and installed on the compressor housing, and are connected to the external controller through a wire.

[0025] The working mode of the present invention is:

[0026] For example, when the compressor is running under certain working conditions, if the motor stator generates a lot of heat, the compressor will not be able to operate. At this time, the opening angle of the upper cover can be reduced (or closed) to increase the refrigerant flow through the lower opening of the deflector, thereby increasing the cooling effect on the motor stator and ensuring the normal operation of the compressor.

[0027] Similarly, when the compressor is running, the refrigeration oil circulates with the refrigerant. Changing the flow direction of the refrigerant can change the circulation of the refrigeration oil. When the upper cover of the air-bending plate is opened at a large angle, the amount of refrigeration oil directly entering the scroll compression chamber increases, lubrication increases, and the oil circulation volume increases. On the contrary, the oil circulation volume decreases.

[0028] Compared with the prior art, the present invention has the following advantages:

[0029] 1. The scroll compressor with an angle-adjustable deflector provided by the present invention has an upper cover plate angle that can be adjusted by a transmission mechanism. During the operation of the compressor, when the motor stator temperature approaches a limit value or when the motor stator temperature needs to be adjusted, the transmission mechanism is used to increase or decrease the opening angle of the upper cover plate to adjust the flow direction of the low-temperature refrigerant to change the cooling effect of the motor stator;

[0030] 2. The scroll compressor with angle-adjustable air deflector provided by the present invention can add an automatic control system to the existing scroll compressor, so that the controller receives the motor stator temperature data and controls the transmission mechanism to adjust the angle of the upper cover plate of the air deflector to achieve automatic adjustment.

[0031] In summary, the technical solution of the present invention solves the problems in the prior art of using a larger angle to fix the upper baffle, which leads to insufficient cooling of the motor and thus compressor failure due to the small refrigerant circulation volume; and using a smaller angle to fix the upper baffle, which leads to excessive cooling of the motor due to the increase in refrigerant circulation volume and cannot meet higher efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] 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 described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0033] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0034] Figure 2 This is a comparison diagram of the closed, half-opened and fully-opened states of the upper cover plate of the deflection plate structure of the present invention;

[0035] Figure 3 This is a structural schematic diagram of the upper cover of the present invention in a fully opened state;

[0036] Figure 4 This is a schematic diagram of the structure of the upper cover plate of the present invention in a fully closed state;

[0037] Figure 5 This is a structural schematic diagram of Example 2 of the present invention.

[0038] In the figure: 10, movable and fixed scroll plates 20, upper support 30, drive assembly 31, crankshaft 32, motor rotor 33, motor stator 40, deflecting plate 41, fixed body 42, upper cover plate 50, control structure 51, transmission mechanism 511, bracket 52, transmission rod 53, signal transmission terminal 60, external controller. DETAILED DESCRIPTION

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0042] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0043] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0044] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0045] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0046] like Figure 1 , 2 As shown, the present invention provides a scroll compressor with an angle-adjustable deflection plate, comprising: a housing provided with an air inlet, a movable and fixed scroll plate 10, an upper support 20, and a drive assembly 30; the housing is provided with a movable and fixed scroll plate 10 that cooperate with each other, and can complete the compressor work of the refrigerant; the upper support 20 is welded on the inner wall of the housing near the upper part of the air inlet, and supports the movable and fixed scroll plates 10; the drive assembly includes a crankshaft 31 of an internal oil delivery channel, a motor rotor 32, and a motor stator;

[0047] A scroll compressor with an angle-adjustable air deflector includes: an angle-adjustable air deflector 40, a control structure 50 and an external controller 60; the angle-adjustable air deflector 40 is arranged on the inner wall of the shell directly opposite to the air intake port of the refrigeration compressor; the control structure 50 is arranged directly above the angle-adjustable air deflector 40; the external controller 60 is connected to the control structure 50 and the motor stator 33 through a wire, and the external controller 60 receives the temperature of the motor stator 33, thereby regulating the action of the control structure 50; when the compressor is running, low-temperature and low-pressure refrigerant enters from the air intake port, flows through the angle-adjustable air deflector 40 into the shell cavity and then enters the scroll disk 10 structure, is compressed to a high-temperature and high-pressure state and is discharged through the exhaust port.

[0048] The angle-adjustable deflector 40 includes: a fixed body 41 and an upper cover plate 42; the fixed body 41 is welded to the inner wall of the refrigeration compressor housing and is located on the rear inner side of the refrigeration compressor suction port; the bottom end of the upper cover plate 42 is hinged to the top end of the fixed body 41.

[0049] The rotation range of the upper cover plate 42 after joining with the fixed body 41 is 0-90°.

[0050] The upper cover plate 42 is located between the air inlet and the upper support 20 .

[0051] The lower opening of the fixed body 41 is located between the lower opening and the motor stator 33; when the compressor is running, the refrigerant is sucked in from the air inlet and enters the shell cavity from the upper cover plate 42 and the lower opening of the folding plate respectively, wherein the refrigerant entering from the upper cover plate 42 can provide more refrigerant oil for the scroll plate 10, and the refrigerant entering from the lower opening can cool the motor stator 33.

[0052] The control mechanism 50 includes: a transmission mechanism 51, a transmission rod 52 and a signal transmission terminal 53; the transmission mechanism 51 is fixed to the inner wall of the refrigeration compressor housing on the upper part of the angle-adjustable deflection plate 40 through a bracket 511; the bottom end of the transmission rod 52 of the transmission mechanism 51 is hinged to the top end of the upper cover plate 42, driving the upper cover plate 42 to rotate at any angle within 0-90°; the signal transmission terminal 53 is fixedly mounted on the outer wall of the refrigeration compressor housing and is connected to the transmission mechanism 51 through a wire; the signal transmission terminal 53 receives the signal sent by the external controller 60 to control the transmission mechanism 51 to operate.

[0053] The signal transmission form of the external controller 60 adopts an independent structure. The signal transmission form of the external controller 60 adopts an independent structure, that is, the signal transmission terminal 53 and the temperature signal output terminal of the motor stator 33 are respectively arranged on the compressor housing, and are respectively connected to the external controller 60 through wires.

[0054] like Figure 3 As shown, when the upper cover plate 42 of the air-bending plate is fully opened, the refrigerant entering from the air inlet is blocked by the fixed body 41, and then enters the compressor cavity from the upper opening and the lower opening respectively. At this time, the refrigerant flow is completely determined by the compressor structure, the cooling capacity of the motor stator 33 is the smallest, and the refrigeration oil suction amount of the scroll plate 10 is the largest;

[0055] like Figure 4 As shown, when the upper cover plate 42 of the air-bending plate is completely closed, the refrigerant entering from the air inlet is blocked by the fixed body 41, and most of it enters the compressor cavity from the lower opening. At this time, the refrigerant flow is under the maximum control of the present invention, the cooling capacity of the motor stator 33 is the maximum, and the refrigeration oil suction amount of the scroll plate 10 is the minimum;

[0056] Example 2

[0057] like Figure 5As shown, (based on Example 1,) the present invention also provides a scroll compressor with an angle-adjustable air deflection plate, and the signal transmission form of the external controller 60 adopts an integrated structure, that is, the signal transmission terminal 53 and the temperature signal output terminal of the motor stator 33 are integrated together and installed on the compressor housing, and are connected to the external controller 60 through a wire.

[0058] The external controller 60 presets the motor stator 33 management temperature T1, the transmission mechanism action command temperature T2, and monitors the motor stator 33 temperature T3 in real time. When T3-T1>T2, the upper cover 42 starts to be closed to reduce its angle by ▲°. This process is one cycle. Each limit can be set according to actual needs.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A scroll compressor with an angle-adjustable air deflector, comprising: A housing with an air intake port, a movable scroll and a fixed scroll (10), an upper support (20), and a drive assembly (30) are provided; the housing is provided with a movable scroll and a fixed scroll (10) that cooperate with each other, and can perform the compressor work of the refrigerant; The upper support (20) is welded to the inner wall of the housing near the upper part of the air inlet, and supports the movable and fixed scroll plates (10); the driving assembly includes a crankshaft (31) of the internal oil delivery channel, a motor rotor (32) and a motor stator (33); the characteristics are: The scroll compressor with an angle-adjustable air deflector comprises: an angle-adjustable air deflector (40), a control structure (50) and an external controller (60); The angle-adjustable air deflecting plate (40) is arranged on the inner wall of the shell directly facing the air intake port of the refrigeration compressor; The control structure (50) is arranged directly above the angle-adjustable air-bending sheet (40); The external controller (60) is connected to the control structure (50) and the motor stator (33) via a wire, and the external controller (60) receives the temperature of the motor stator (33) to adjust the action of the control structure (50); When the compressor is running, low-temperature and low-pressure refrigerant enters from the air intake port, flows through the angle-adjustable air deflector (40) into the shell cavity, and then enters the scroll plate (10) structure, is compressed to a high-temperature and high-pressure state, and is discharged from the air outlet.

2. The scroll compressor with angle-adjustable deflector according to claim 1, characterized in that: The angle-adjustable deflecting plate (40) comprises: a fixed body (41) and an upper cover plate (42); The fixed body (41) is welded to the inner wall of the refrigeration compressor housing and is located on the rear inner side of the refrigeration compressor air intake port; The bottom end of the upper cover plate (42) is hinged to the top end of the fixed body (41).

3. The scroll compressor with angle-adjustable air baffles according to claim 2, characterized in that: The rotation range of the upper cover plate (42) after joining with the fixed body (41) is 0-90°.

4. The scroll compressor with angle-adjustable deflector according to claim 2, characterized in that: The upper cover plate (42) is located between the air intake port and the upper support (20).

5. The scroll compressor with angle-adjustable deflector according to claim 2, characterized in that: The lower opening of the fixed body (41) is located between the lower opening and the motor stator (33); when the compressor is running, the refrigerant is sucked in from the air inlet and enters the shell cavity from the upper cover plate (42) and the lower opening of the folding plate respectively, wherein the refrigerant entering from the upper cover plate (42) can provide more refrigeration oil for the vortex disk (10), and the refrigerant entering from the lower opening can cool the motor stator (33).

6. The scroll compressor with angle-adjustable deflector according to claim 1, characterized in that: The control mechanism (50) comprises: a transmission mechanism (51), a transmission rod (52) and a signal transmission terminal (53); The transmission mechanism (51) is fixedly mounted on the inner wall of the refrigeration compressor housing above the angle-adjustable deflector (40) via a bracket (511); The bottom end of the transmission rod (52) of the transmission mechanism (51) is hinged to the top end of the upper cover plate (42), driving the upper cover plate (42) to rotate at any angle within the range of 0-90°; The signal transmission terminal (53) is fixedly mounted on the outer wall of the refrigeration compressor housing and is connected to the transmission mechanism (51) via a wire; the signal transmission terminal (53) receives a signal sent by an external controller (60) to control the transmission mechanism (51) to operate.

7. The scroll compressor with angle-adjustable deflector according to claim 1, characterized in that: The signal transmission form of the external controller (60) adopts one of an independent structure and an integrated structure; The signal transmission form of the external controller (60) adopts an independent structure, that is, the signal transmission terminal (53) and the temperature signal output terminal of the motor stator (33) are respectively arranged on the compressor housing and are respectively connected to the external controller (60) through wires; The signal transmission form of the external controller (60) adopts an integrated structure, that is, the signal transmission terminal (53) and the temperature signal output terminal of the motor stator (33) are integrated together and installed on the compressor housing, and connected to the external controller (60) through a wire.

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