Compressors, heat exchange systems and electrical equipment

Abstract

The present invention relates to the field of compressor technology, and provides a compressor, a heat exchange system and an electrical device, wherein the compressor comprises: a shell and a compression mechanism, wherein the shell is provided with a first exhaust portion and a second exhaust portion; the compression mechanism is arranged in the shell, and the compression mechanism comprises a first piston, a second piston and a cylinder component, wherein the cylinder component constructs a first cavity and a second cavity, wherein the first piston is adapted to reciprocate in the first cavity and the second piston is adapted to reciprocate in the second cavity, so that the first cavity and the second cavity are switched between an intake state and an exhaust state respectively, and in the exhaust state, the first exhaust portion is connected to the first cavity, and the second exhaust portion is connected to the second cavity, so as to form two independent exhaust passages. The compressor proposed in the present invention adopts a reciprocating structure to form two independent exhaust passages, so that one compressor can discharge two compressed gases of different exhaust pressures at the same time, and the reciprocating structure is compact, which helps to meet the requirements of miniaturization and lightweight.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to compressors, heat exchange systems and electrical equipment. Background Art

[0002] Compressors are widely used in appliances such as air conditioners, refrigerators, heat pump dishwashers, and heat pump clothes dryers. With technological advancements, the use of dual heat pump cycles to achieve staged heating and cascade energy utilization can effectively improve the thermodynamic performance of heat pump systems. However, the compressors used in these technologies typically feature a single-exhaust rotor structure, making them difficult to meet the requirements of staged compression.

[0003] The rotor-type single-exhaust compressor in the related technology requires two compressors for heat pump cycle staged heating, which increases the cost of the heat pump product. In addition, the compressor occupies a larger space, resulting in an increase in the overall volume and weight of the heat pump product, making it difficult to meet the needs of lightweight and miniaturization. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a compressor that adopts a reciprocating structure to form two independent exhaust passages, allowing a single compressor to simultaneously discharge compressed gas at two different exhaust pressures. The reciprocating structure is more compact, helping the compressor meet the requirements of miniaturization and lightweighting.

[0005] The present invention also provides a heat exchange system.

[0006] The present invention also provides an electrical device.

[0007] A compressor according to an embodiment of the first aspect of the present invention comprises:

[0008] A housing having a first exhaust portion and a second exhaust portion;

[0009] A compression mechanism is arranged in the shell and includes a first piston, a second piston and a cylinder component. The cylinder component constructs a first cavity and a second cavity. The first piston is suitable for reciprocating in the first cavity and the second piston is suitable for reciprocating in the second cavity, so that the first cavity and the second cavity are switched between an intake state and an exhaust state respectively. In the exhaust state, the first exhaust part is connected to the first cavity, and the second exhaust part is connected to the second cavity to form two independent exhaust channels.

[0010] According to an embodiment of the present invention, the compressor includes two pistons and two exhaust parts to form two independent exhaust channels, so that one compressor can realize the functions of two compressors, reducing the cost, volume and weight of the product; the reciprocating structure is more compact, which can further reduce the volume of the compressor, helping the compressor to meet the requirements of miniaturization and lightweight, and thus enabling the electrical equipment installed with the compressor to meet the requirements of miniaturization and lightweight.

[0011] According to one embodiment of the present invention, a driving shaft is included, and the rotatable driving shaft is used to drive the first piston and the second piston away from or close to the driving shaft.

[0012] According to one embodiment of the present invention, the drive shaft and the first piston are connected via a first connecting rod, and both ends of the first connecting rod are rotatably connected to the drive shaft and the first piston, respectively. The drive shaft is used to drive the first connecting rod to rotate eccentrically so that the first connecting rod drives the first piston to reciprocate.

[0013] The drive shaft and the second piston are connected through a second connecting rod. The two ends of the second connecting rod are respectively rotatably connected to the drive shaft and the second piston. The drive shaft is used to drive the second connecting rod to rotate eccentrically so that the second connecting rod drives the second piston to reciprocate.

[0014] According to one embodiment of the present invention, the first piston and the second piston are symmetrically arranged on both sides of the drive shaft, and the center of the first piston and the center of the second piston as well as the center line of the first connecting rod and the center line of the second connecting rod are on the same plane.

[0015] According to one embodiment of the present invention, the first connecting rod and the second connecting rod have the same structure. The first connecting rod includes a rod body and a first protrusion. The first protrusion protrudes from the rod body along the axial direction of the first connecting rod relative to the rotation axis of the first piston. The first protrusion is connected to the first piston and protrudes toward the second connecting rod.

[0016] The second connecting rod and the first connecting rod are installed on the driving shaft in opposite directions, so that the first protrusion of the second connecting rod protrudes toward the first connecting rod.

[0017] According to one embodiment of the present invention, the first connecting rod further includes a second protrusion, the second protrusion and the first protrusion protruding in a direction opposite to the rod body, and the second protrusion is connected to the drive shaft.

[0018] According to an embodiment of the present invention, both the first protrusion and the second protrusion include an inclined portion extending obliquely along the rod body toward a direction away from the rod body.

[0019] According to one embodiment of the present invention, the first connecting rod includes a first shaft connecting portion, a second shaft connecting portion, and a first piston connecting portion connecting the first shaft connecting portion and the second shaft connecting portion, the first piston connecting portion is connected to the first piston, the first shaft connecting portion and the second shaft connecting portion are both connected to the drive shaft, and a mounting groove is provided between the first shaft connecting portion and the second shaft connecting portion;

[0020] The second connecting rod includes a second piston connecting portion and a third shaft connecting portion connected to each other, the second piston connecting portion is connected to the second piston, and the third shaft connecting portion is connected to the driving shaft and is located in the mounting groove.

[0021] According to one embodiment of the present invention, the drive shaft includes a first connecting part and a second connecting part, the outer side of the first connecting part is fixedly sleeved with an eccentric first roller, and the outer side of the first roller is rotatably sleeved with the first connecting rod; the outer side of the second connecting part is fixedly sleeved with an eccentric second roller, and the outer side of the second roller is rotatably sleeved with the second connecting rod.

[0022] According to one embodiment of the present invention, a first channel, a second channel and a third channel are provided on the drive shaft, and the shell limits a connecting cavity for accommodating a lubricating fluid, the first channel is connected to the connecting cavity, the first channel extends along the axial direction of the drive shaft and the first channel is eccentrically arranged in the drive shaft, the second channel surrounds the drive shaft and the two ends of the second channel are respectively connected to the first channel and the third channel, and the third channel includes a connecting portion extending along the axial direction of the drive shaft to the end of the drive shaft and a lubrication portion extending along the radial direction of the drive shaft to the side wall of the drive shaft.

[0023] According to one embodiment of the present invention, an air inlet portion is provided on the housing, and the housing defines a communicating cavity adapted to communicate with the first cavity and the second cavity;

[0024] The first cavity is adapted to switch between communicating with the air intake portion and communicating with the first exhaust portion, one of the air intake portion and the first exhaust portion being in contact communication with the cylinder component, and the other being adapted to be in non-contact communication with the cylinder component through the communication cavity;

[0025] The second cavity is adapted to switch between communicating with the air intake portion and communicating with the second exhaust portion. One of the air intake portion and the second exhaust portion is in contact communication with the cylinder component, and the other is adapted to communicate with the cylinder component in a non-contact manner through the communication cavity.

[0026] According to an embodiment of the present invention, both the first exhaust portion and the second exhaust portion are in contact connection with the cylinder component and are symmetrically arranged on both sides of the cylinder component.

[0027] According to one embodiment of the present invention, the cylinder component defines a first air intake chamber, a second air intake chamber, a first exhaust chamber, and a second exhaust chamber.

[0028] In the case where both the first cavity and the second cavity are connected to the air inlet, the air inlet is connected to the first cavity through the first air inlet cavity and to the second cavity through the second air inlet cavity;

[0029] And / or, when the first cavity is connected to the first exhaust part and the second cavity is connected to the second exhaust part, the first exhaust part is connected to the first cavity through the first exhaust cavity, and the second exhaust part is connected to the second cavity through the second exhaust cavity.

[0030] According to an embodiment of the second aspect of the present invention, the heat exchange system includes a first condenser, a second condenser, a throttling device, an evaporator and the compressor described in the above embodiment, the first condenser, the throttling device, the evaporator and the compressor are connected to form a first heat exchange circuit, and the first condenser is connected to the first exhaust part; the second condenser, the throttling device, the evaporator and the compressor are connected to form a second heat exchange circuit, and the second condenser is connected to the second exhaust part.

[0031] The electrical equipment according to the third embodiment of the present invention includes the compressor described in the above embodiment, or includes the heat exchange system described in the above embodiment.

[0032] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0033] The compressor of the embodiment of the present invention includes two pistons and two exhaust parts. The gas is compressed by the reciprocating motion of the first piston and the second piston, and the first compressed gas and the second compressed gas are discharged to form two independent exhaust channels, so that one compressor can realize the functions of two compressors, reducing the cost, volume and weight of the product; the reciprocating structure is more compact, which can further reduce the volume of the compressor, helping the compressor to meet the requirements of miniaturization and lightweight, and thus enabling the electrical equipment installed with the compressor to meet the requirements of miniaturization and lightweight.

[0034] Furthermore, the heat exchange system of the embodiment of the present invention can utilize a dual exhaust mode to provide refrigerants with two condensing temperatures, perform staged heat exchange, and utilize energy in a cascade manner to improve heat exchange performance.

[0035] Furthermore, the electrical device according to the embodiment of the present invention helps to meet the requirements of miniaturization and lightweighting, thereby improving the user experience of the electrical device.

[0036] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 1 is a schematic structural diagram of a compressor provided by an embodiment of the present invention;

[0039] Figure 2 1 is a schematic diagram of the three-dimensional structure of the compression mechanism of a compressor provided by an embodiment of the present invention; the figure does not show the muffler body;

[0040] Figure 3 1 is a schematic top view of the compression mechanism of a compressor provided by an embodiment of the present invention; the muffler body is not shown in the figure;

[0041] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure of AA;

[0042] Figure 5 1 is a side view of the structure of the compression mechanism of a compressor provided by an embodiment of the present invention; the figure does not show the muffler body;

[0043] Figure 6 yes Figure 5 Schematic diagram of the cross-sectional structure of the middle BB; wherein the drive shaft is in the initial state, and the first and second pistons are in the exhaust state;

[0044] Figure 7 yes Figure 5 Schematic diagram of the cross-sectional structure of the middle BB; wherein the drive shaft is in a 90° rotated state, and the first and second pistons are in the suction state;

[0045] Figure 8 yes Figure 5 Schematic diagram of the cross-sectional structure of the middle BB; wherein the drive shaft is rotated 180 degrees, and the first and second pistons are in the state of completing the suction;

[0046] Figure 9 yes Figure 5 Schematic diagram of the cross-sectional structure of the middle BB; wherein the drive shaft is in a state of rotation of 270 degrees, and the first and second pistons are in the exhaust state;

[0047] Figure 10 1 is a schematic diagram of the three-dimensional structure of a first connecting rod (or second connecting rod) of a compression mechanism of a compressor provided by an embodiment of the present invention;

[0048] Figure 11 1 is a schematic diagram of the three-dimensional structure of a drive shaft of a compressor provided by an embodiment of the present invention;

[0049] Figure 12 is a structural schematic diagram of a compressor provided by another embodiment of the present invention;

[0050] Figure 13 1 is a schematic diagram of the three-dimensional structure of the compression mechanism of a compressor provided by another embodiment of the present invention; the figure does not show the muffler body;

[0051] Figure 14 1 is a schematic top view of the compression mechanism of a compressor provided by another embodiment of the present invention; the muffler body is not shown in the figure;

[0052] Figure 15 yes Figure 14 Schematic diagram of the cross-sectional structure of CC;

[0053] Figure 16 is a schematic three-dimensional structural diagram of a first connecting rod of a compression mechanism of a compressor provided by another embodiment of the present invention;

[0054] Figure 17 is a schematic diagram of the three-dimensional structure of a drive shaft of a compressor provided by another embodiment of the present invention;

[0055] Figure 18 1 is a schematic structural diagram of a heat exchange system provided by a first embodiment of the present invention, wherein the arrows in the figure indicate the flow direction of the refrigerant during the heating process;

[0056] Figure 19 1 is a schematic structural diagram of a heat exchange system provided by a first embodiment of the present invention, wherein the arrows in the figure indicate the flow direction of the refrigerant in the refrigeration process; the dotted box represents the application space;

[0057] Figure 20 3 is a schematic structural diagram of a heat exchange system provided in a second embodiment of the present invention, wherein the arrows in the figure indicate the flow direction of the refrigerant during the heating process; the dotted box represents the application space.

[0058] Reference numerals:

[0059] 100: housing; 110: first exhaust portion; 120: second exhaust portion; 130: air intake portion; 140: oil return portion; 150: communication cavity;

[0060] 200: Compression mechanism; 210: First piston; 220: Second piston; 230: Cylinder component; 231: Cylinder body; 2311: First cavity; 2312: Second cavity; 2313: Intake valve; 2314: Exhaust valve; 232: Muffler body; 2321: First intake cavity; 2322: Second intake cavity; 2323: First exhaust cavity; 2324: Second exhaust cavity; 240: First connecting rod; 241: Rod body; 242: First protrusion; 243: Second protrusion; 244: Inclined portion; 245: First shaft connection portion; 246: Second shaft connection portion; 247: First piston connection portion; 248: Mounting groove; 250: Second connecting rod; 251: Second piston connection portion; 252: Third shaft connection portion; 260: First roller; 261: First upper roller; 262: First lower roller; 270: Second roller;

[0061] 300: driving shaft; 310: first connecting portion; 320: second connecting portion; 330: first channel; 340: second channel; 350: third channel; 351: connecting portion; 352: lubricating portion; 360: supporting portion; 370: driving portion; 380: circumferential limiting portion;

[0062] 400: driving motor; 500: supporting part; 600: machine base;

[0063] 710: First condenser; 720: Second condenser; 730: First throttling device; 740: Second throttling device; 750: First evaporator; 760: Second evaporator; 770: First oil separator; 780: Second oil separator; 790: First four-way valve; 800: Second four-way valve; 810: Evaporator. DETAILED DESCRIPTION

[0064] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0065] In the description of the embodiments 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", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention 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 operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0066] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0067] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0068] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean 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 embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0069] The embodiment of the first aspect of the present invention, combined with Figures 1 to 17As shown, a compressor is provided, including a shell 100 and a compression mechanism 200 arranged in the shell 100, the shell 100 is provided with a first exhaust part 110 and a second exhaust part 120; the compression mechanism 200 includes a first piston 210, a second piston 220 and a cylinder component 230, the cylinder component 230 is constructed to form a first cavity 2311 suitable for communicating with the first exhaust part 110 and a second cavity 2312 suitable for communicating with the second exhaust part 120, the first piston 210 is suitable for reciprocating in the first cavity 2311 and the second piston 220 is suitable for reciprocating in the second cavity 2312, so that the first cavity 2311 and the second cavity 2312 are switched between an intake state and an exhaust state respectively, and in the exhaust state, the first exhaust part 110 is connected to the first cavity 2311, and the second exhaust part 120 is connected to the second cavity 2312, so as to form two independent exhaust channels.

[0070] When both the first chamber 2311 and the second chamber 2312 are in the exhaust state, the first piston 210 moves within the first chamber 2311 to compress the gas therein, and the second piston 220 moves within the second chamber 2312 to compress the gas therein. The first chamber 2311 communicates with the first exhaust portion 110 to form a first exhaust channel, and the second chamber 2312 communicates with the second exhaust portion 120 to form a second exhaust channel. The first compressed gas compressed and discharged from the first chamber 2311 is discharged from the compressor along the first exhaust channel, while the second compressed gas compressed and discharged from the second chamber 2312 is discharged from the compressor along the second exhaust channel. The first and second exhaust channels are disconnected for independent exhaust, allowing the compressor to discharge two independent compressed gas paths. This allows for use in a heat exchange system with dual heat exchange circuits, such as a dual heat pump cycle, for staged heating.

[0071] When the first cavity 2311 and the second cavity 2312 are both in the suction state, the first exhaust channel and the second exhaust channel are both closed, and the first piston 210 moves in the opposite direction of the exhaust state in the first cavity 2311 to inhale gas into the first cavity 2311, and the second piston 220 moves in the opposite direction of the exhaust state in the second cavity 2312 to inhale gas into the second cavity 2312.

[0072] It should be noted that the first cavity 2311 and the second cavity 2312 can be, but are not limited to, in the exhaust state or the intake state at the same time. Therefore, when the first cavity 2311 is in the exhaust state, the second cavity 2312 can be in the intake state, and when the first cavity 2311 is in the intake state, the second cavity 2312 can be in the exhaust state. The states of the first cavity 2311 and the second cavity 2312 can be set according to actual needs.

[0073] It should also be noted that the state of the first cavity 2311 and the second cavity 2312 is not limited to the intake state and the exhaust state, but can also include a compression state. The compression state can be understood as the first cavity 2311 and the second cavity 2312 being closed, that is, the intake valve 2313 and the exhaust valve 2314 used to adjust the state of the first cavity 2311 and the second cavity 2312 are both closed, the first cavity 2311 and the second cavity 2312 stop taking in air, the first piston 210 and the second piston 220 move and compress the gas until the pressure in the first cavity 2311 and the second cavity 2312 reaches the opening pressure of the exhaust valve 2314.

[0074] The compressor of this embodiment compresses gas through the reciprocating motion of the first piston 210 and the second piston 220, and discharges the first compressed gas and the second compressed gas. One compressor can discharge two refrigerants with different exhaust pressures at the same time, realizing the functions of two compressors, reducing the cost, volume and weight of the product. In addition, the reciprocating structure is more compact, making the compressor smaller. The pressures of the first compressed gas and the second compressed gas can be the same or different. When the pressures of the first compressed gas and the second compressed gas are different, one compressor can output different exhaust pressures, which is suitable for a dual heat pump cycle with graded heating, and performs energy cascade utilization, effectively improving the thermodynamic performance of the heat pump system. The different pressures of the first compressed gas and the second compressed gas can be achieved by: the opening pressures of the exhaust valves 2314 corresponding to the first cavity 2311 and the second cavity 2312 are different.

[0075] The first exhaust portion 110 and the second exhaust portion 120 may be openings formed on the housing 100, or may be pipes connected to the housing 100, or may be other structures capable of discharging compressed gas, which will not be described in detail here. The first cavity 2311 and the first exhaust portion 110 are connected and disconnected by the exhaust valve 2314 corresponding to the first cavity 2311. The second cavity 2312 and the second exhaust portion 120 are also connected and disconnected by the exhaust valve 2314 corresponding to the second cavity 2312.

[0076] The first exhaust channel can be a channel formed by docking the first exhaust portion 110 with the outlet position of the first cavity 2311, or a channel formed by connecting the first exhaust portion 110 with the outlet position of the first cavity 2311 through an intermediate component, or a channel formed by connecting the first exhaust portion 110 with the outlet position of the first cavity 2311 through the cavity in the shell 100, or other ways of forming a channel, which are not listed here. Similarly, the formation method of the second exhaust channel is one of the formation methods of the first exhaust channel, which will not be repeated here. It should be noted that the structural form of the first exhaust channel and the second exhaust channel in the same compressor can be the same or different.

[0077] Combine Figure 1 and Figure 12 As will be appreciated, the compressor includes a drive shaft 300, which is rotatable and configured to drive the first piston 210 and the second piston 220 to move away from or toward the drive shaft 300. A single drive shaft 300 simultaneously drives the reciprocating motion of the first piston 210 and the second piston 220. This simplifies the compressor's drive structure, thereby simplifying the compressor's internal structure and reducing the size of the compressor, as compared to providing a drive shaft 300 for each piston.

[0078] Among them, reference Figure 1 and Figure 12 As shown, the first piston 210 and the second piston 220 move away from the drive shaft 300 synchronously, which can be understood as the gas in the first cavity 2311 and the second cavity 2312 is compressed or discharged synchronously, and the first piston 210 and the second piston 220 move close to the drive shaft 300 synchronously, which can be understood as the first cavity 2311 and the second cavity 2312 are inhaled synchronously. In the following embodiments, Figure 1 and Figure 12 The corresponding relationship shown is used as an example for explanation.

[0079] It should be noted that the first piston and the second piston move away from the drive shaft synchronously, or the first cavity and the second cavity can inhale synchronously, the first piston and the second piston move toward the drive shaft synchronously, or the first cavity and the second cavity can compress gas or exhaust synchronously (not shown in the figure). The position change of the first piston 210 and the second piston 220 relative to the drive shaft 300 causes the operating state of the first cavity 2311 and the second cavity 2312 to change, which is related to the position of the intake valve 2313 and the exhaust valve 2314, but is not limited in this embodiment. Of course, the first piston 210 and the second piston 220 are not limited to synchronous movement. The movement process of the first piston 210 and the second piston 220 has a certain degree of independence and can be selected according to needs.

[0080] Among them, reference Figure 1 and Figure 12 As shown, the drive motor 400 can provide a rotational driving force for the drive shaft 300 , and the drive motor 400 can also be disposed in the housing 100 .

[0081] Combine Figure 1 and Figure 12It can be understood that the drive shaft 300 is connected to the first piston 210 through the first connecting rod 240, and the two ends of the first connecting rod 240 are respectively rotated to connect the drive shaft 300 and the first piston 210. The drive shaft 300 is used to drive the first connecting rod 240 to rotate eccentrically so that the first connecting rod 240 drives the first piston 210 to reciprocate. During the eccentric rotation of the first end of the first connecting rod 240 connected to the drive shaft 300, the first end drives the second end (the end of the first connecting rod 240 connected to the first piston 210) to rotate relative to the first piston 210. During this process, the distance from the center of the first end to the first cavity 2311 gradually increases or decreases. When the distance from the center of the first end to the first cavity 2311 gradually increases, the first connecting rod 240 drives the first piston 210 to move toward the drive shaft 300, at which time the first cavity 2311 absorbs air. Similarly, when the distance from the center of the first end to the first cavity 2311 gradually decreases, the first connecting rod 240 drives the first piston 210 to move away from the drive shaft 300, at which time the first cavity 2311 compresses or discharges gas. Connecting the drive shaft 300 and the piston via a connecting rod provides a simple structure and is easy to install, which helps to simplify the structure of the compressor.

[0082] The drive shaft 300 is connected to the second piston 220 via the second connecting rod 250. The two ends of the second connecting rod 250 are rotatably connected to the drive shaft 300 and the second piston 220. The drive shaft 300 is used to drive the second connecting rod 250 to rotate eccentrically, so that the second connecting rod 250 drives the second piston 220 to reciprocate. In conjunction with the above, the movement of the second connecting rod 250 and the changes in the relative positional relationship between the second cavity 2312, the second piston 220, the second connecting rod 250, and the drive shaft 300 are similar to the movement of the first connecting rod 240 and the changes in the relative positional relationship between the first cavity 2311, the first piston 210, the first connecting rod 240, and the drive shaft 300. Reference can be made to the above description and will not be repeated here.

[0083] The two pistons are connected to the drive shaft 300 in the same manner and have the same movement principle, which helps to further simplify the structure, facilitates reducing the size of the compressor, and helps the compressor develop in the direction of miniaturization and lightweight.

[0084] Combine Figure 1 and Figure 12As shown, it can be understood that the symmetrical arrangement of the first piston 210 and the second piston 220 on either side of the drive shaft 300 helps improve the symmetry of the structure on both sides of the drive shaft 300, ensures the installation stability of the drive shaft 300, and reduces the noise generated by the vibration of the drive shaft 300. Furthermore, the center of the first piston 210, the centerline of the first connecting rod 240, the centerline of the second connecting rod 250, and the center of the second piston 220 are coplanar, so that the reciprocating inertial forces of the pistons are also relatively offset on the same horizontal plane, effectively and automatically balancing the reciprocating inertial forces generated by the operation of the compressor, helping to reduce compressor vibration and noise.

[0085] Combine Figure 1 、 Figures 5 to 9 As shown, Figure 6 As shown, when the drive shaft 300 is in the initial state, that is, the first piston 210 and the second piston 220 are in the exhaust completion state, the center lines of the first piston 210, the first connecting rod 240, the second connecting rod 250 and the second piston 220 are collinear; Figure 7 As shown, when the driving shaft 300 rotates in the clockwise direction and rotates to 90°, the first end of the first connecting rod 240 and the first end of the second connecting rod 250 both deviate from the initial position and the center of the first end of the first connecting rod 240 moves away from the first cavity 2311 so that the first cavity 2311 is inhaled, and the center of the first end of the second connecting rod 250 moves away from the second cavity 2312 so that the second cavity 2312 is inhaled; Figure 8 As shown, the drive shaft 300 continues to rotate clockwise and rotates to 180°, the distance from the center of the first end of the first connecting rod 240 to the first cavity 2311 reaches the maximum, the distance from the center of the first end of the second connecting rod 250 to the second cavity 2312 also reaches the maximum, the suction volume reaches the maximum and the suction process is completed; Figure 9 As shown, the drive shaft 300 continues to rotate clockwise and rotates to 270 degrees. This process is the exhaust process. The position of the first piston 210 in the first cavity 2311 and the position of the second piston 220 in the second cavity 2312 are both the same as Figure 7 Same as Figure 7 The difference is that the relative position of the first end of the first connecting rod 240 and the first end of the second connecting rod 250 changes, and the first piston 210 and the second piston 220 both perform gas compression; the drive shaft 300 continues to rotate clockwise and returns to Figure 6 In the state shown, one intake and exhaust cycle is completed. During the movement of the drive shaft 300, the forces of the first connecting rod 240 and the second connecting rod 250 are balanced to ensure the smooth operation of the compressor.

[0086] It should be noted that in this embodiment, the first piston 210 and the second piston 220 are symmetrically arranged on both sides of the drive shaft 300, which has better operating stability and less noise. However, in other embodiments, the first piston and the second piston can also be asymmetrically connected to the drive shaft. The structure and relative position relationship of the first piston and the second piston can be selected as needed, and the stability and noise can be adjusted by other means.

[0087] In order to ensure the symmetry and stability of the structures on both sides of the drive shaft 300, embodiments of the first connecting rod 240 and the second connecting rod 250 are provided below.

[0088] refer to Figure 4 、 Figure 6 and Figure 10 As shown, it can be understood that the first piston 210 and the second piston 220 are symmetrically arranged on both sides of the drive shaft 300, and the first connecting rod 240 and the second connecting rod 250 have the same structure and are arranged on both sides of the drive shaft 300 so that the first connecting rod 240 is connected to the first piston 210 and the second connecting rod 250 is connected to the second piston 220, thereby ensuring the symmetry of the structure on both sides of the drive shaft 300, which helps to ensure the stability of the compression mechanism 200 during the rotation of the drive shaft 300 and reduce vibration.

[0089] The structures of the first connecting rod 240 and the second connecting rod 250 are described using the first connecting rod 240 as an example. The first connecting rod 240 includes a rod body 241 and a first protrusion 242. The first protrusion 242 protrudes from the rod body 241 axially relative to the rotation axis of the first piston 210. The first protrusion 242 of the first connecting rod 240 is connected to the first piston 210 and protrudes toward the second connecting rod 250. The first connecting rod 240 and the second connecting rod 250 have the same structure, that is, the second connecting rod 250 also includes a rod body 241 and a first protrusion 242. The second connecting rod 250 and the first connecting rod 240 are installed on the drive shaft 300 in opposite directions, such that the first protrusion 242 of the second connecting rod 250 protrudes toward the first connecting rod 240. Compared to two parallel, flat connecting rods, the provision of two first protrusions 242 helps the centers of the two connecting rods and the centers of the two pistons become coplanar, thereby offsetting the reciprocating inertial forces on the same plane. This effectively and automatically balances the reciprocating inertial forces generated during compressor operation, reducing compressor vibration and achieving a more silent operation. Furthermore, the provision of first protrusions 242 helps strengthen the structural strength of first and second connecting rods 240 and 250, thereby increasing their lifespan.

[0090] The first connecting rod 240 (or the second connecting rod 250) is used to rotate and connect the first piston 210 (or the second piston 220) and is surrounded by a first protrusion 242 to ensure the structural uniformity of the first connecting rod 240. The first connecting rod 240 and the second connecting rod 250 are arranged in parallel in the axial direction of the drive shaft 300. Figure 1 and Figure 4 As shown, the first connecting rod 240 is located below the second connecting rod 250, the first protrusion 242 of the first connecting rod 240 protrudes upward, and the first protrusion 242 of the second connecting rod 250 protrudes downward, so that the center of the first connecting rod 240, the center of the second connecting rod 250, the center of the first piston 210 and the center of the second piston 220 are on the same horizontal plane, fully ensuring the structural symmetry on both sides of the drive shaft 300.

[0091] The first protrusion 242 can be integrally formed with the first rod portion 241, such as by integral casting, integral stamping, or welding. Alternatively, the first protrusion 242 can be connected to the first rod portion 241 via a detachable connection, such as a threaded connection, a snap-on connection, a plug-in connection, or a fastener connection. The detachable connection between the first protrusion 242 and the first rod portion 241 facilitates size adjustment, making the shape design of the first connecting rod 240 more flexible. The second connecting rod 250 can be processed using the above-mentioned method or other methods, which are not limited here. Of course, the first connecting rod 240 and the second connecting rod 250 can be processed in the same manner, which can simplify the processing process and facilitate assembly.

[0092] refer to Figures 1 to 4 and Figure 11 As shown, it is understood that the first connecting rod 240 further includes a second protrusion 243. The second protrusion 243 and the first protrusion 242 protrude in the opposite direction relative to the rod body 241. The second protrusion 243 is connected to the drive shaft 300. The second protrusion 243 cooperates with the first protrusion 242 to facilitate adjustment of the center of the first rod body, thereby improving structural symmetry. The second protrusion 243 also strengthens the first connecting rod 240. Of course, the second connecting rod 250 is also provided with a second protrusion 243.

[0093] refer to Figure 1 and Figure 4 As shown, the second protrusion 243 is disposed around the drive shaft 300. The second protrusion 243 of the first connecting rod 240 protrudes downward, and the second protrusion 243 of the second connecting rod 250 protrudes upward to cooperate with the first protrusion 242.

[0094] The connection method between the second protrusion 243 and the rod body 241 may be the same as the connection method between the first protrusion 242 and the rod body 241 described above, and will not be repeated here.

[0095] Combine Figure 1 、 Figure 4 and Figure 10 As shown, it can be understood that the first protrusion 242 and the second protrusion 243 each include an inclined portion 244 extending along the rod body 241 in a direction away from the rod body 241. The first protrusion 242 and the second protrusion 243 are both inclined to transition to the rod body 241 via the inclined portion 244, which helps to improve the structural uniformity of the first rod body and helps to alleviate the problem of local stress concentration in the rod body 241.

[0096] The inclined portion 244 extends obliquely along an inclined plane or along an inclined curved surface. The surface shape of the inclined portion 244 can be selected according to actual needs.

[0097] Of course, the structures of the first connecting rod 240 and the second connecting rod 250 are not limited to the above structures, and may also be other structures that help maintain the symmetry of the compression mechanism 200.

[0098] refer to Figure 12 、 Figure 15 and Figure 16 As shown, the first connecting rod 240 and the second connecting rod 250 in the above embodiment can be replaced by the following structure.

[0099] Among them, reference Figure 12 、 Figure 15 and Figure 16 As shown, the first connecting rod 240 includes a first shaft connecting portion 245, a second shaft connecting portion 246, and a first piston connecting portion 247 connecting the first and second shaft connecting portions 245, 246. The first piston connecting portion 247 is connected to the first piston 210. The first and second shaft connecting portions 245, 246 are both connected to the drive shaft 300. A mounting groove 248 is provided between the first and second shaft connecting portions 245, 246. The second connecting rod 250 includes a second piston connecting portion 251 and a third shaft connecting portion 252 connected to each other. The second piston connecting portion 251 is connected to the second piston 220. The third shaft connecting portion 252 is connected to the drive shaft 300 and is located in the mounting groove 248. The centerline of the first connecting rod 240 is coplanar with the centerline of the second connecting rod 250. That is, the center of the first piston 210, the center of the first connecting rod 240, the center of the second connecting rod 250, and the center of the second piston 220 are coplanar. In this embodiment, the center of the first connecting rod 240 is adjusted by the structure of the first shaft connecting part 245 and the second shaft connecting part 246 arranged in parallel, so that the center of the first connecting rod 240 is coplanar with the center of the second connecting rod 250, and the reciprocating inertia force of the first piston 210 and the second piston 220 is relatively offset on the same plane, effectively and automatically balancing the reciprocating inertia force generated when the compressor is running, and the compressor vibrates less to achieve a better silent effect.

[0100] In this embodiment, the structure of the second connecting rod 250 is different from that of the first connecting rod 240. The first connecting rod 240 and the second connecting rod 250 are both symmetrical in structure, which helps to ensure the structural stability of the first connecting rod 240 and the second connecting rod 250 and is also convenient for processing. Figure 16 As shown, the first shaft connection portion 245 and the second shaft connection portion 246 of the first connecting rod 240 form a U-shaped structure opening toward the second connecting rod 250 , and the mounting groove 248 is a U-shaped groove.

[0101] Combine Figure 1 、 Figure 4 、 Figure 11 、 Figure 12 、 Figure 15 and Figure 17 As shown, it can be understood that the drive shaft 300 includes a first connecting portion 310 and a second connecting portion 320. The outer side of the first connecting portion 310 is fixedly coupled to the eccentric first roller 260, which is rotatably coupled to the outer side of the first roller 260. The outer side of the second connecting portion 320 is fixedly coupled to the eccentric second roller 270, which is rotatably coupled to the outer side of the second roller 270. Both the first and second connecting rods 240 and 250 are connected to the drive shaft 300 via rollers. The rollers have a simple structure and can achieve high machining accuracy, helping to meet the precision requirements of the compressor. Compared to connecting the drive shaft 300 and the connecting rod through bearings, rollers have a simpler structure and can achieve higher machining accuracy than bearings. Furthermore, bearings are generally standard components, requiring additional structural components to achieve eccentricity, which hinders the simplification of the connection between the drive shaft 300 and the connecting rod.

[0102] The first connecting portion 310 and the second connecting portion 320 are both provided with a circumferential stopper 380. The roller is provided with a structure compatible with the circumferential stopper 380 to prevent the roller from rotating circumferentially relative to the drive shaft 300. This allows the drive shaft 300 and the roller to be securely connected without adding other structural components. The circumferential stopper 380 can be a flat surface, a curved surface with a different curvature than the first connecting portion 310 or the second connecting portion 320, a bump, a groove, or other structure.

[0103] refer to Figure 1 and Figure 4As shown, two rollers are connected to the drive shaft 300: a first roller 260 and a second roller 270. The first roller 260 is located below the second roller 270. A step is formed between the first connecting portion 310 and the second connecting portion 320 of the drive shaft 300. The step limits the second roller 270, preventing it from falling under gravity and thus avoiding interference between the first roller 260 and the second roller 270. The maximum radial dimension of the first connecting portion 310 is larger than the maximum radial dimension of the second connecting portion 320 to ensure that the first roller 260 can be mounted on the first connecting portion 310.

[0104] refer to Figure 12 and Figure 15 As shown, three rollers are connected to the drive shaft 300. The first roller 260 is divided into a first upper roller 261 and a first lower roller 262. From bottom to top, they are the first lower roller 262, the second roller 270, and the first upper roller 261. The first connecting portion 310 includes a first upper connecting portion and a first lower connecting portion. The first lower roller 262 connects the first shaft connecting portion 245 to the first lower connecting portion of the drive shaft 300. The second roller 270 connects the third shaft connecting portion 252 to the second connecting portion 320 of the drive shaft 300. The first upper roller 261 connects the second shaft connecting portion 246 to the first upper connecting portion of the drive shaft 300. A crankshaft section is formed between the first lower connecting portion, the second connecting portion 320, and the first upper connecting portion. A step is formed between the first lower connecting portion and the second connecting portion 320 to limit the lower position of the second roller 270. A step is formed between the second connecting portion 320 and the first upper connecting portion to limit the lower position of the first upper roller 261. The radial dimension of the first lower connecting portion is different from that of the first upper connecting portion, so the inner diameters of the first lower roller 262 and the first upper roller 261 are different. The first shaft connecting portion 245 and the second shaft connecting portion 246 of the first connecting rod 240 can have the same aperture, that is, the outer diameters of the first lower roller 262 and the first upper roller 261 are the same. The outer diameter of the first lower roller 262 is larger than the outer diameter of the second roller 270, which facilitates the installation of the first connecting rod 240.

[0105] refer to Figure 12 and Figure 15 As shown, the thickness of the first shaft connection part 245 and the second shaft connection part 246 are both smaller than the thickness of the third shaft connection part 252, and the thickness of the first lower roller 262 and the first upper roller 261 are both smaller than the thickness of the second roller 270, so as to balance the structural size and structural strength of the first connecting rod 240 and the second connecting rod 250, which helps to ensure the overall stability of the compression mechanism 200.

[0106] Combine Figure 1 、 Figure 4 、 Figure 12 and Figure 15As shown, a support portion 360 is disposed below the first connection portion 310 of the drive shaft 300. A step is formed between the first connection portion 310 and the support portion 360 to support the roller above the support portion 360. A drive portion 370 is disposed below the support portion 360. The drive portion 370 passes through the cylinder component 230 and is connected to the drive motor 400. The support portion 360 is positioned above the cylinder component 230. A gasket is disposed between the support portion 360 and the cylinder component 230 to reduce wear between the support portion 360 and the cylinder component 230.

[0107] Combine Figure 1 、 Figure 4 、 Figure 11 、 Figure 12 、 Figure 15 and Figure 17 As shown, it can be understood that the drive shaft 300 is provided with a first channel 330, a second channel 340, and a third channel 350 arranged along the axial direction of the drive shaft 300. The housing 100 defines a communication cavity 150 for accommodating lubricating fluid. The first channel 330 communicates with the communication cavity 150 and extends axially along the drive shaft 300 and is eccentrically disposed within the drive shaft 300. The second channel 340 extends around the drive shaft 300, with both ends of the second channel 340 connecting the first channel 330 and the third channel 350, respectively. The third channel 350 includes a communication portion 351 extending axially to the end of the drive shaft 300 and a lubricating portion 352 extending radially to the sidewall of the drive shaft 300. The multiple channels on the drive shaft 300 cooperate to transport the lubricating fluid within the communication cavity 150 to various locations of the compression mechanism 200, thereby ensuring lubrication of the compression mechanism 200.

[0108] The storage area (eg, oil pool) of the communication cavity 150 contains lubricating fluid, and the first channel 330 , the second channel 340 , and the third channel 350 are sequentially distributed from bottom to top. During the rotation of the drive shaft 300, the lubricating fluid in the eccentrically arranged first channel 330 flows upward under the action of centrifugal force, causing the lubricating fluid in the first channel 330 to flow to the second channel 340. Then, under the rotational force of the drive shaft 300 and the guidance of the second channel 340, it flows to the third channel 350. A portion of the lubricating fluid in the third channel 350 flows out of the lubrication portion 352 for lubrication between various components, while another portion of the lubricating fluid in the third channel 350 flows out of the connecting portion 351. The lubricating fluid flowing out of the connecting portion 351 is also thrown toward the components (such as the first piston 210 and the second piston 220) on the periphery of the drive shaft 300 under the action of the rotation of the drive shaft 300. The falling process of the lubricating fluid thrown out of the connecting portion 351 lubricates and cools the entire compression mechanism 200. The lubricating fluid then flows back to the storage area of ​​the connecting chamber 150 for recycling. The lubricating fluid can be lubricating oil, and the type of lubricating oil can be selected as needed.

[0109] In this embodiment, the first channel 330 and the third channel 350 are connected through the second channel 340, rather than the first channel 330 and the third channel 350 being directly connected. This helps to retain lubricating fluid in the third channel 350 and prevents the lubricating fluid in the third channel 350 from directly flowing back into the first channel 330, thereby achieving a better lubrication effect on the compression mechanism 200 and the drive shaft 300.

[0110] Combine Figure 1 and Figure 12 As shown, the housing 100 is provided with an oil return portion 140, which is in communication with the communication cavity 150. The oil return portion 140 returns the lubricating oil carried out of the housing 100 by the compressed gas to the communication cavity 150, thereby facilitating the recycling of the lubricating oil. The oil return portion 140 can be an oil return port provided on the housing 100, an oil return pipe connected to the housing 100, or other structure capable of returning oil.

[0111] When the drive shaft 300 is connected to the first connecting rod 240 through the first roller 260, and the drive shaft 300 is connected to the second connecting rod 250 through the second roller 270, the first roller 260 is provided with a channel connected to the lubrication part 352, and the second roller 270 is also provided with a channel connected to the lubrication part 352, so that the lubricating fluid flows out from the first roller 260 to lubricate between the first connecting rod 240 and the first roller 260, and flows out from the second roller 270 to lubricate between the second connecting rod 250 and the second roller 270, thereby reducing the friction between the first connecting rod 240 and the second connecting rod 250.

[0112] Combine Figure 1 and Figure 12As shown, it can be understood that the housing 100 is provided with an air intake portion 130, and the housing 100 limits a connecting cavity 150 suitable for communicating with the first cavity 2311 and the second cavity 2312; the first cavity 2311 is suitable for switching between communicating with the air intake portion 130 and communicating with the first exhaust portion 110, and one of the air intake portion 130 and the first exhaust portion 110 is in contact communication with the cylinder component 230, and the other is suitable for non-contact communication with the cylinder component 230 through the connecting cavity 150. The air intake portion 130 or the first exhaust portion 110 is in contact communication with the cylinder component 230, and the contact communication has good connection stability and is convenient for processing; the other adopts non-contact communication, which can reduce the interference of vibration during the operation of the compression mechanism 200 and the drive mechanism. Among them, the contact communication can be rigid contact or flexible contact, which can be selected according to actual needs.

[0113] Similarly, the second cavity 2312 is adapted to switch between communication with the air intake portion 130 and communication with the second exhaust portion 120. One of the air intake portion 130 and the second exhaust portion 120 is in contact communication with the cylinder component 230, while the other is adapted to be in contactless communication with the cylinder component 230 via the communication cavity 150. The connection between the air intake portion 130, the second exhaust portion 120, and the cylinder component 230 can be referenced to the connection between the air intake portion 130, the first exhaust portion 110, and the cylinder component 230 described above, and will not be further described here.

[0114] It should be noted that the reference Figure 1 and Figure 12 As shown, the first exhaust portion 110 and the second exhaust portion 120 are both in contact communication with the cylinder component 230, and the air intake portion 130 is in non-contact communication with the cylinder component 230. The air intake portion 130 is in communication with the first cavity 2311 or the second cavity 2312 via the communication cavity 150 to allow the compression mechanism 200 to inhale air. The position of the air intake portion 130 on the housing 100 is flexible. The communication cavity 150 in this embodiment and the aforementioned communication cavity 150 for accommodating lubricating fluid can both be understood as the space within the housing 100.

[0115] The air inlet 130 may be an air inlet port provided on the housing 100, an air inlet pipe connected to the housing 100, or other structure for air intake. One or more air inlet 130 may be provided on the housing 100. When one air inlet 130 is provided on the housing 100, gas enters the connecting cavity 150 through the air inlet 130 and freely diffuses within the connecting cavity 150. When the first cavity 2311 and the second cavity 2312 are in the air intake state, the gas within the connecting cavity 150 flows into the first cavity 2311 and the second cavity 2312. When multiple air inlet 130 are provided on the housing 100, gas may enter the connecting cavity 150 through multiple air inlet 130, or directly enter the first cavity 2311 or the second cavity 2312 through each air inlet 130.

[0116] refer to Figure 1 and Figure 12 As shown, it can be understood that the first exhaust section 110 and the second exhaust section 120 are both contact-connected with the cylinder component 230 and symmetrically arranged on both sides of the cylinder component 230. The first compressed gas discharged from the first cavity 2311 directly enters the first exhaust section 110 and the second compressed gas discharged from the second cavity 2312 directly enters the second exhaust section 120, which helps to maintain the pressure of the compressed gas and prevents the first compressed gas from mixing with the second compressed gas, thereby improving the independence of the two exhaust channels. The symmetrical arrangement of the first exhaust section 110 and the second exhaust section 120 also helps to improve the structural symmetry of the compression mechanism 200 and ensure that the compression mechanism 200 and the shell 100 are evenly stressed. The air inlet section 130 is provided on the shell 100, which helps to simplify the structure of the shell 100.

[0117] refer to Figure 1 and Figure 12 As shown, it can be understood that the cylinder component 230 limits the first air inlet chamber 2321 and the second air inlet chamber 2322. When the first cavity 2311 and the second cavity 2312 are both connected to the air inlet portion 130, the air inlet portion 130 is connected to the first cavity 2311 through the first air inlet chamber 2321 and is connected to the second cavity 2312 through the second air inlet chamber 2322; in the process of the air inlet portion 130 intakeing air into the first cavity 2311, the gas first passes through the first air inlet chamber 2321, which helps to reduce the noise generated during the intake process of the first cavity 2311. Similarly, when the air inlet portion 130 intakes air into the second cavity 2312, the gas first passes through the second air inlet chamber 2322, which helps to reduce the noise generated during the intake process of the second cavity 2312.

[0118] Among them, reference Figure 1 and Figure 12As shown, when the air intake portion 130 is drawing air into the first cavity 2311, the air first enters the connecting cavity 150. The air in the connecting cavity 150 then enters the first and second air intake cavities 2321 and 2322. The air in the first air intake cavities 2321 is then drawn into the first cavity 2311, while the air in the second air intake cavities 2322 are then drawn into the second cavity 2312. This inhalation process undergoes multiple stages of buffering, which helps reduce inhalation noise. The entrances to the first and second air intake cavities 2321 and 2322 are both located below the cavity. The entrance to the first cavity 2311 is located above the first cavity 2321, while the entrance to the second cavity 2312 is located above the second cavity 2322. This utilizes the principle of upward gas diffusion to facilitate the entry of air into the first and second cavities 2311 and 2312. The air intake portion 130 is positioned near the entrances to the first and / or second air intake cavities 2321 and 2322.

[0119] It can also be understood that the cylinder component 230 limits the first exhaust chamber 2323 and the second exhaust chamber 2324. When the first cavity 2311 is connected to the first exhaust part 110 and the second cavity 2312 is connected to the second exhaust part 120, the first exhaust part 110 is connected to the first cavity 2311 through the first exhaust chamber 2323, and the second exhaust part 120 is connected to the second cavity 2312 through the second exhaust chamber 2324. The first compressed gas discharged from the first cavity 2311 is silenced through the first exhaust chamber 2323 and then enters the first exhaust part 110, and the second compressed gas discharged from the second cavity 2312 is silenced through the second exhaust chamber 2324 and then enters the second exhaust part 120, which helps to reduce exhaust noise.

[0120] In combination with the above, the cylinder component 230 can simultaneously limit the first air intake chamber 2321, the second air intake chamber 2322, the first exhaust chamber 2323 and the second exhaust chamber 2324, and at the same time play the role of suction noise reduction and exhaust noise reduction, which helps to reduce the noise of the compressor.

[0121] Among them, the cylinder component 230 includes a cylinder body 231 and a silencer body 232 connected to the cylinder body 231. The cylinder body 231 limits a first cavity 2311 and a second cavity 2312. The cylinder body 231 is provided with an intake valve 2313 and an exhaust valve 2314 at positions corresponding to the first cavity 2311 and the second cavity 2312. In the intake state, the intake valve 2313 is opened and the exhaust valve 2314 is closed. In the exhaust state, the exhaust valve 2314 is opened and the intake valve 2313 is closed. The silencer body 232 is arranged on the outside of the cylinder body 231. The silencer body 232 limits the first air intake chamber 2321, the second air intake chamber 2322, the first exhaust chamber 2323 and the second exhaust chamber 2324. In the intake state, the gas enters the cylinder body 231 through the silencer body 232. In the exhaust state, the gas is discharged to the first exhaust part 110 and the second exhaust part 120 through the silencer body 232.

[0122] Among them, the silencer body 232 includes a first body and a second body, the first body is provided with a first air inlet chamber 2321 and a first exhaust chamber 2323, and the second body is provided with a second air inlet chamber 2322 and a second exhaust chamber 2324. The first body and the second body can be an integrated structure or two independent components, and the structure of the silencer body 232 can be selected according to actual needs. Silencing holes, silencer coatings or other structures that contribute to silencing and noise reduction can also be provided on the silencer body 232. It should be noted that when the first exhaust part and the second exhaust part are both in contact communication with the silencer body, silencer holes cannot be provided on the structures corresponding to the first exhaust chamber 2323 and the second exhaust chamber 2324 to avoid mixing of the two compressed gases with other gases.

[0123] refer to Figure 1 and Figure 12 As shown, it can be understood that the driving mechanism includes a driving motor 400 and a driving shaft 300. The driving motor 400 is arranged below the compression mechanism 200. A support member 500 connected to the housing 100 is provided below the driving motor 400. The support member 500 plays a role in absorbing and reducing the vibration of the driving mechanism and the compression mechanism 200.

[0124] The support member 500 may be an elastic member, such as a spring or an elastic airbag, etc. The support member 500 may also be a damper or other structure that can provide buffering and support.

[0125] The bottom of the housing 100 is connected to the base 600 , and the compressor is fixedly installed through the base 600 , and the installation method is simple and convenient.

[0126] The embodiment of the second aspect of the present invention, combined with Figures 1 to 20As shown, a heat exchange system is provided, comprising a first condenser 710, a second condenser 720, a throttling device, an evaporator 810, and the compressor of the above-described embodiments. The first condenser 710, the throttling device, the evaporator 810, and the compressor are connected to form a first heat exchange circuit, and the first condenser 710 is connected to the first exhaust portion 110; the second condenser 720, the throttling device, the evaporator 810, and the compressor are connected to form a second heat exchange circuit, and the second condenser 720 is connected to the second exhaust portion 120. The heat exchange system can employ the compressors of all the above-described embodiments, and thus at least has the beneficial effects of the above-described embodiments, which will not be described in detail here.

[0127] Based on the system pressures of the two heat exchange circuits, the opening pressures of the exhaust valves 2314 corresponding to the first chamber 2311 and the exhaust valves 2314 corresponding to the second chamber 2312 are determined, thereby achieving different exhaust pressures in the first and second exhaust channels. Heat exchange systems can operate in a variety of modes. Generally, the pressures of the first compressed gas discharged from the first exhaust channel and the second compressed gas discharged from the second exhaust channel are different.

[0128] Provide refrigerants with different condensing temperatures through dual exhaust mode, refer to Figure 18 As shown, during the heating process, the wind first passes through the second condenser 720 with a low condensing temperature, and then enters the first condenser 710 with a high condensing temperature, so that the wind is heated in stages and energy is utilized in a cascade manner to improve the heat exchange performance.

[0129] in, Figure 18 The oil separator is also illustrated in the figure. The first exhaust part 110 and the second exhaust part 120 are respectively connected to the gas inlet of the first oil separator 770 and the second oil separator 780. The gas outlets of the first oil separator 770 and the second oil separator 780 are respectively connected to the first condenser 710 and the second condenser 720. The liquid outlet of the oil separator is connected to the oil return part 140 to realize the recycling of the lubricating oil.

[0130] refer to Figure 19 and Figure 20 As shown, it can be understood that the evaporator is divided into a first evaporator 750 and a second evaporator 760, the throttling device is divided into a first throttling device 730 and a second throttling device 740, the first heat exchange circuit includes a first condenser 710, a first throttling device 730, a first evaporator 750 and a compressor connected to form a circulation circuit, and the second heat exchange circuit includes a second condenser 720, a second throttling device 740, a second evaporator 760 and a compressor connected to form a circulation circuit.

[0131] in, Figure 19 and Figure 20In the embodiment, the first heat exchange circuit further includes a first four-way valve 790 provided at the gas outlet of the first oil separator 770, and the second heat exchange circuit further includes a second four-way valve 800 provided at the gas outlet of the second oil separator 780. Figure 20 As shown, during the heating process, the refrigerant releases heat through the first condenser 710 and the second condenser 720, and then passes through the first throttling device 730 and the second throttling device 740 to become a low-pressure liquid, and then enters the first evaporator 750 and the second evaporator 760 respectively to absorb heat and become a low-pressure refrigerant gas. Among them, the evaporation temperatures of the first evaporator 750 and the second evaporator 760 can be the same or different. The wind enters from the low evaporation temperature and then enters the high evaporation temperature to absorb heat in stages, and energy is utilized in a step-by-step manner to improve performance. In this example, the first evaporator 750 has a high evaporation temperature and the second evaporator 760 has a low evaporation temperature.

[0132] refer to Figure 19 As shown, during the refrigeration process, the refrigerant first releases heat and then absorbs heat, and a dual circulation system is also used. The air first enters the second evaporator 760 with a low evaporation temperature, and then enters the first evaporator 750 with a high evaporation temperature for staged heat exchange, thereby utilizing energy in a cascade manner to improve performance.

[0133] The embodiment of the third aspect of the present invention, combined with Figures 1 to 20 As shown, an electrical device is provided, including the compressor of the above embodiment, or, including the heat exchange system of the above embodiment. The electrical device can adopt the compressor or heat exchange system of the above embodiment, and thus has at least the beneficial effects brought by the above embodiment, which will not be repeated here.

[0134] The electrical equipment may be a heat exchange device, such as a refrigerator, freezer, air conditioner, etc. The electrical equipment may also be a dryer, washing machine, heat pump water heater or heat pump dishwasher, etc. Of course, the electrical equipment may also be other equipment using a heat exchange system, which are not listed here one by one.

[0135] The above embodiments are intended to illustrate the present invention only and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be encompassed by the scope of the claims of the present invention.

Claims

1. A compressor, characterized in that: include: The shell is provided with a first exhaust portion and a second exhaust portion, and the bottom of the shell is connected to the organic base; a compression mechanism disposed in the housing, comprising a first piston, a second piston, and a cylinder component, wherein the cylinder component forms a first cavity and a second cavity, wherein the first piston is adapted to reciprocate within the first cavity, and the second piston is adapted to reciprocate within the second cavity, so that the first cavity and the second cavity are switched between an intake state, an exhaust state, and a compression state, respectively. In the exhaust state, the first exhaust portion is in communication with the first cavity, and the second exhaust portion is in communication with the second cavity, so as to form two independent exhaust passages; A drive shaft, wherein the rotatable drive shaft is used to drive the first piston and the second piston away from or toward the drive shaft; The drive shaft and the first piston are connected via a first connecting rod, and both ends of the first connecting rod are rotatably connected to the drive shaft and the first piston, respectively. The drive shaft is used to drive the first connecting rod to rotate eccentrically so that the first connecting rod drives the first piston to reciprocate. The drive shaft and the second piston are connected via a second connecting rod, and both ends of the second connecting rod are rotatably connected to the drive shaft and the second piston, respectively. The drive shaft is used to drive the second connecting rod to rotate eccentrically so that the second connecting rod drives the second piston to reciprocate. The first piston and the second piston are symmetrically arranged on both sides of the drive shaft, and the center of the first piston and the center of the second piston as well as the center line of the first connecting rod and the center line of the second connecting rod are in the same plane; The first connecting rod includes a first shaft connecting portion, a second shaft connecting portion, and a first piston connecting portion connecting the first shaft connecting portion and the second shaft connecting portion, the first piston connecting portion is connected to the first piston, the first shaft connecting portion and the second shaft connecting portion are both connected to the drive shaft, and a mounting groove is provided between the first shaft connecting portion and the second shaft connecting portion; The second connecting rod includes a second piston connecting portion and a third shaft connecting portion connected to each other, the second piston connecting portion is connected to the second piston, and the third shaft connecting portion is connected to the driving shaft and is located in the mounting groove.

2. The compressor according to claim 1, characterized in that The first connecting rod and the second connecting rod have the same structure. The first connecting rod includes a rod body and a first protrusion. The first protrusion protrudes from the rod body along the axial direction of the first connecting rod relative to the rotation axis of the first piston. The first protrusion is connected to the first piston and protrudes toward the second connecting rod. The second connecting rod and the first connecting rod are installed on the driving shaft in opposite directions, so that the first protrusion of the second connecting rod protrudes toward the first connecting rod.

3. The compressor according to claim 2, characterized in that The first connecting rod further includes a second protrusion, the second protrusion and the first protrusion protruding in a direction opposite to that of the first protrusion relative to the rod body, and the second protrusion is connected to the driving shaft.

4. The compressor according to claim 3, characterized in that The first protrusion and the second protrusion each include an inclined portion extending obliquely along the rod body toward a direction away from the rod body.

5. The compressor according to any one of claims 1 to 4, characterized in that The drive shaft includes a first connecting part and a second connecting part, the outer side of the first connecting part is fixedly sleeved with an eccentric first roller, and the outer side of the first roller is rotatably sleeved with the first connecting rod; the outer side of the second connecting part is fixedly sleeved with an eccentric second roller, and the outer side of the second roller is rotatably sleeved with the second connecting rod.

6. The compressor according to any one of claims 1 to 4, characterized in that The drive shaft is provided with a first channel, a second channel and a third channel, and the shell limits a connecting cavity for accommodating a lubricating fluid. The first channel is connected to the connecting cavity, the first channel extends along the axial direction of the drive shaft and the first channel is eccentrically arranged in the drive shaft, the second channel extends around the drive shaft and the two ends of the second channel are respectively connected to the first channel and the third channel, and the third channel includes a connecting portion extending along the axial direction of the drive shaft to the end of the drive shaft and a lubricating portion extending along the radial direction of the drive shaft to the side wall of the drive shaft.

7. The compressor according to any one of claims 1 to 4, characterized in that An air inlet is provided on the shell, and the shell defines a communicating cavity suitable for communicating with the first cavity and the second cavity; The first cavity is adapted to switch between being in communication with the air intake portion and being in communication with the first exhaust portion, wherein one of the air intake portion and the first exhaust portion is in contact communication with the cylinder component, while the other is adapted to be in non-contact communication with the cylinder component through the communication cavity; The second cavity is suitable for switching between communicating with the air intake portion and communicating with the second exhaust portion. If one of the air intake portion and the second exhaust portion is communicated with the cylinder component in a contact manner, the other is suitable for communicating with the cylinder component in a non-contact manner through the communicating cavity.

8. The compressor according to claim 7, characterized in that The first exhaust portion and the second exhaust portion are both in contact connection with the cylinder component and are symmetrically arranged on both sides of the cylinder component.

9. The compressor according to claim 7, characterized in that The cylinder component defines a first air inlet cavity, a second air inlet cavity, a first air exhaust cavity, and a second air exhaust cavity. In the case where both the first cavity and the second cavity are connected to the air inlet, the air inlet is connected to the first cavity through the first air inlet cavity and to the second cavity through the second air inlet cavity; And / or, when the first cavity is connected to the first exhaust part and the second cavity is connected to the second exhaust part, the first exhaust part is connected to the first cavity through the first exhaust cavity, and the second exhaust part is connected to the second cavity through the second exhaust cavity.

10. A heat exchange system, characterized in that: comprising a first condenser, a second condenser, a throttling device, an evaporator, and the compressor according to any one of claims 1 to 9, wherein the first condenser, the throttling device, the evaporator, and the compressor are connected to form a first heat exchange circuit, and the first condenser is connected to the first exhaust portion; The second condenser, the throttling device, the evaporator and the compressor are connected to form a second heat exchange circuit, and the second condenser is connected to the second exhaust portion.

11. An electrical device, characterized in that: The compressor comprises any one of claims 1 to 9, or the heat exchange system comprises the heat exchange system according to claim 10.

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