Compressors, compressor components, heat exchange systems and electrical equipment

Abstract

The present invention relates to the field of compressor technology, and provides a compressor, a compressor assembly, a heat exchange system, and an electrical device. The compressor comprises: a shell, which defines a first cavity and a second cavity, wherein the shell is provided with a first exhaust structure and a second exhaust structure, wherein the first exhaust structure is connected to the first cavity, and the second exhaust structure is connected to the second cavity; and a compression mechanism, wherein the compression mechanism is provided with a first compression chamber and a second compression chamber, wherein the first compression chamber is connected to the first cavity, and the second compression chamber is connected to the second cavity. The compressor, compressor assembly, heat exchange system, and electrical device provided by the present invention realize a dual exhaust function and solve the oil-gas separation problem at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to compressors, compressor components, 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 for staged heating and cascaded energy utilization can effectively improve the thermodynamic performance of heat pump systems. However, the compressors currently on the market have a single-exhaust structure and cannot meet the requirements of staged compression.

[0003] Using an existing single-exhaust compressor for heat pump cycle staged heating requires two compressors, increasing the cost of the heat pump product. The two compressors take up a lot of space, increasing the size and weight of the heat pump product. Furthermore, the compressor exhaust is separated by an oil-gas separator, which is bulky and heavy, further increasing the cost and space occupied by the compressor product, making it difficult to meet the requirements 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 realizes dual exhaust function and solves the oil-gas separation problem at the same time.

[0005] The present invention also provides a compressor assembly.

[0006] The present invention also provides a heat exchange system.

[0007] The present invention also provides an electrical device.

[0008] A compressor according to an embodiment of the first aspect of the present invention comprises:

[0009] a housing defining a first cavity and a second cavity, wherein a first exhaust structure and a second exhaust structure are provided on the housing, wherein the first exhaust structure is in communication with the first cavity, and the second exhaust structure is in communication with the second cavity;

[0010] A compression mechanism is provided with a first compression chamber and a second compression chamber, the first compression chamber is communicated with the first cavity, and the second compression chamber is communicated with the second cavity.

[0011] According to the compressor of the embodiment of the present invention, a first compression chamber and a second compression chamber are provided in the compression mechanism to discharge the first compressed gas and the second compressed gas. The first compressed gas is discharged after passing through the first cavity and the first exhaust structure, and the second compressed gas is discharged after passing through the second cavity and the second exhaust structure. One compressor has two independent exhaust paths, realizing the functions of two compressors, reducing the cost, volume and weight of the product; and the first cavity and the second cavity in the shell both have the function of oil-gas separators, without the need for additional oil-gas separators, further reducing the cost, volume and weight of the product; realizing dual exhaust functions and solving the oil separation problem at the same time.

[0012] According to one embodiment of the present invention, the compression mechanism is disposed in the first cavity, making full use of the space of the first cavity, and the oil separated from the first cavity can be directly used to lubricate components such as the compression mechanism.

[0013] According to one embodiment of the present invention, an oil return component is provided between the first cavity and the second cavity so that the oil in the second cavity flows back into the first cavity, thereby fully utilizing the separated oil.

[0014] According to one embodiment of the present invention, the position of the oil return component is lower than the connection position between the second compression chamber and the second cavity, so as to avoid the second compressed gas from flowing back into the first cavity through the oil return component as much as possible, prevent the first compressed gas from mixing with the second compressed gas, and ensure the independence of the two exhaust paths.

[0015] According to one embodiment of the present invention, the exhaust pressure of the first compression chamber is lower than the exhaust pressure of the second compression chamber. The pressure difference between the first cavity and the second cavity is used to make the oil flow back into the first cavity, thereby simplifying the structure of the oil return component.

[0016] According to one embodiment of the present invention, the shell includes a first shell and a second shell arranged on the outside of the first shell. The first shell limits the first cavity, and the second cavity is limited between the first shell and the second shell, which is convenient for modification of the existing structure and has a flexible structure.

[0017] According to one embodiment of the present invention, the first exhaust structure is connected to the top of the first shell, and the second exhaust structure is connected to the top of the second shell, which conforms to the upward flow of gas and facilitates exhaust.

[0018] According to one embodiment of the present invention, the second shell is covered on a partial outer wall or the entire outer wall of the first shell, and the structure of the second shell is flexible.

[0019] According to one embodiment of the present invention, when an oil return component is provided between the first cavity and the second cavity, an oil return hole is configured on the first shell, and oil is returned through the oil return hole, thereby simplifying the structure.

[0020] According to one embodiment of the present invention, the compression mechanism further comprises:

[0021] The first cylinder includes a first connecting channel and a first intake channel. The first cylinder forms a first compression chamber and a first suction chamber, with the first intake channel communicating with the first suction chamber. The first connecting channel connects the second compression chamber and the second chamber. The first connecting channel and the first intake channel are located on opposite sides of the first cylinder. This helps ensure balanced forces on the compression mechanism and the housing, improving compressor stability.

[0022] According to one embodiment of the present invention, the compression mechanism further comprises:

[0023] The second cylinder includes a second connecting channel and a second intake channel. The second cylinder defines a second compression chamber and a second suction chamber, with the second intake channel communicating with the second suction chamber. The second connecting channel connects the second compression chamber and the second cavity. The second connecting channel and the second intake channel are located on opposite sides of the second cylinder. This further ensures balanced forces on the compression mechanism and the first housing, improving compressor stability.

[0024] According to one embodiment of the present invention, the housing further defines a third cavity, and the compression mechanism further includes an air intake cavity, which communicates with the third cavity. Gas enters the air intake cavity and undergoes gas-liquid separation within the third cavity. The third cavity functions as a liquid reservoir, eliminating the need for a separate liquid reservoir, simplifying the structure, and reducing weight.

[0025] The compressor assembly according to the second embodiment of the present invention includes a liquid accumulator and the compressor, wherein the liquid accumulator is communicated with the suction chamber of the compression mechanism.

[0026] According to the third aspect of the present invention, the heat exchange system includes two heat exchange branches and the compressor, and each of the heat exchange branches includes a condenser, a throttling device and an evaporator, wherein the condenser inlet of one of the heat exchange branches is connected to the first exhaust structure, and the condenser inlet of the other heat exchange branch is connected to the second exhaust structure.

[0027] The electrical equipment according to the fourth embodiment of the present invention further includes the heat exchange system.

[0028] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: the embodiment of the present invention includes a shell, which limits the first cavity and the second cavity, and the first exhaust structure and the second exhaust structure are arranged on the shell; the first compression chamber and the second compression chamber are provided in the compression mechanism; the first compressed gas discharged from the first compression chamber enters the first cavity and is discharged through the first exhaust structure, and at the same time, the first compressed gas is separated from oil and gas in the first cavity; the second compressed gas discharged from the second compression chamber enters the second cavity and is discharged through the second exhaust structure, and at the same time, the second compressed gas is separated from oil and gas in the second cavity, realizing dual exhaust function and solving the oil and gas separation problem at the same time, without the need for additional oil and gas separators, further reducing the cost, volume and weight of the product.

[0029] 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

[0030] 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.

[0031] Figure 1 1 is a schematic diagram of a three-dimensional structure of a compressor and a liquid accumulator in a connected state according to an embodiment of the present invention;

[0032] Figure 2 The compressor and the liquid reservoir provided in the embodiment of the present invention are connected in a state Figure 1 A schematic diagram of the structure shown in the top view;

[0033] Figure 3 The compressor provided by the embodiment of the present invention Figure 2 Schematic diagram of the cross-sectional structure of AA;

[0034] Figure 4 The compressor provided by the embodiment of the present invention Figure 2 Schematic diagram of the cross-sectional structure of BB.

[0035] Reference numerals:

[0036] 1: housing; 11: first exhaust structure; 12: second exhaust structure; 13: first cavity; 14: second cavity; 15: first housing; 151: oil return hole; 16: second housing;

[0037] 2: Compression mechanism; 21: First cylinder body; 211: First compression chamber; 212: First connecting channel; 213: First intake channel; 22: First rotor; 23: Second cylinder body; 231: Second compression chamber; 232: Second intake channel; 24: Second rotor; 25: First muffler; 26: Second muffler; 261: Muffler chamber; 27: First baffle; 28: Second baffle;

[0038] 3: liquid reservoir; 31: first inlet; 32: first outlet; 33: second outlet;

[0039] 4: Machine base; 5: Driving mechanism; 51: Eccentric crankshaft. DETAILED DESCRIPTION

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] Combine Figures 1 to 4 As shown, one embodiment of the present invention provides a compressor, including: a shell 1, which limits a first cavity 13 and a second cavity 14, and a first exhaust structure 11 and a second exhaust structure 12 are provided on the shell 1, the first exhaust structure 11 is connected to the first cavity 13, and the second exhaust structure 12 is connected to the second cavity 14; a compression mechanism 2, in which a first compression chamber 211 and a second compression chamber 231 are provided, the first compression chamber 211 is connected to the first cavity 13, and the second compression chamber 231 is connected to the second cavity 14.

[0046] The first compression chamber 211, the first cavity 13, and the first exhaust structure 11 form a first exhaust channel. The second compression chamber 231, the second cavity 14, and the second exhaust structure 12 form a second exhaust channel. The two exhaust channels are disconnected for independent exhaust, enabling the compressor to discharge two independent compressed gas paths. This allows for use in a heat exchange system with dual heat exchange branches, such as a dual heat pump cycle for staged heating. Of course, the compressor of this embodiment is not limited to use in heat exchange systems with dual heat exchange branches.

[0047] Furthermore, the first cavity 13 provides a space for oil-gas separation for the first compressed gas discharged from the first compression chamber 211, and the second cavity 14 provides a space for oil-gas separation for the second compressed gas discharged from the second compression chamber 231. Thus, the first cavity 13 and the second cavity 14 function as oil-gas separators, eliminating the need for an external oil-gas separator in the compressor. Oil return can be achieved in a dual-exhaust compressor system through improvements to the housing 1 structure.

[0048] The pressures of the first and second compressed gases can be the same or different. When the pressures of the first and second compressed gases are different, a single compressor can output different exhaust pressures, which is suitable for a dual heat pump cycle with staged heating, enabling cascaded energy utilization and effectively improving the thermodynamic performance of the heat pump system. The different pressures of the first and second compressed gases can be achieved by having the exhaust valves corresponding to the first compression chamber 211 and the second compression chamber 231 have different opening pressures.

[0049] The compressor of this embodiment is suitable for compressors with vertical or horizontal structures. It adopts the first compression chamber 211 and the second compression chamber 231 to compress gas and discharge the first compressed gas and the second compressed gas. One compressor realizes the functions of two compressors, reducing the cost, volume and weight of the product; and the shell 1 also has the function of an oil-gas separator, without the need for an additional oil-gas separator, further reducing the cost, volume and weight of the product; it realizes the dual exhaust function and solves the oil separation problem at the same time.

[0050] The first exhaust structure 11 and the second exhaust structure 12 may be pipes connected to the shell 1 or holes opened on the shell 1 , or may be other structures capable of discharging compressed gas, which will not be described in detail here.

[0051] In another embodiment, combined Figure 3 and Figure 4 As shown, the compression mechanism 2 is arranged in the first cavity 13, and the first compressed gas is directly separated from the oil and gas in the first cavity 13, which fully utilizes the space of the first cavity 13 and simplifies the structure. The separated oil can be directly used for lubrication of the compression mechanism 2 and other components, and the lubrication effect is good.

[0052] When the compressor is a vertical rotary compressor, after the first compressed gas passes through the exhaust valve plate, the first compressed gas passes through the drive mechanism 5 (including the motor, crankshaft, etc.). During this process, the oil carried by the first compressed gas is separated and the oil returns to the oil pool by gravity.

[0053] In another embodiment, an oil return component is provided between the first cavity 13 and the second cavity 14 to allow the oil separated in the second cavity 14 to flow back into the first cavity 13 so that the oil can be used to lubricate components such as the compression mechanism 2 in the first cavity 13.

[0054] The oil return component may be a pipe connecting the first cavity 13 and the second cavity 14, or an orifice opened in the wall of the first cavity 13 and the second cavity 14 at corresponding locations, or a valve disposed between the first cavity 13 and the second cavity 14. When the oil return component is a valve, the valve may be a solenoid valve or a float valve, which can be opened and closed as needed.

[0055] In another embodiment, the oil return position of the oil return component is lower than the connection position between the second compression chamber 231 and the second cavity 14, that is, the position where the second compressed gas enters the second cavity 14 is higher than the oil return position of the oil return component, thereby avoiding the second compressed gas from passing through the oil return component during the upward flow, thereby reducing the overflow of the second compressed gas to the first cavity 13 through the oil return component, reducing the mixing of the first compressed gas and the second compressed gas, and trying to ensure the independence of the exhaust of the first exhaust channel and the second exhaust channel.

[0056] When the pressures of the first compressed gas and the second compressed gas are different, reducing the mixing of the first compressed gas and the second compressed gas helps to ensure the exhaust pressure of the two compressed gases.

[0057] Furthermore, the oil return structure is positioned as close to the bottom of the housing 1 as possible to facilitate oil return and reduce gas passage.

[0058] In another embodiment, the exhaust pressure of the first compression chamber 211 is lower than the exhaust pressure of the second compression chamber 231, so that the pressure in the first chamber 13 is lower than the pressure in the second chamber 14, and the exhaust pressure of the first exhaust structure 11 is lower than the exhaust pressure of the second exhaust structure 12. The pressure in the first chamber 13 is lower than the pressure in the second chamber 14, creating a pressure differential across the oil return structure. Under the action of this pressure differential, the oil in the second chamber 14 can flow back into the first chamber 13. In this case, the oil return structure can be a normally open structure such as a pipe or an orifice. This provides a simple oil return method and can achieve oil return without the need for additional pumps, valves, or other structures.

[0059] It should be noted that when the oil return structure is a normally open structure such as a pipe or orifice, the opening area of ​​the oil return structure is determined by the pressure differential between the first cavity 13 and the second cavity 14, and is used to return the oil separated in the second cavity 14 to the first cavity 13. At the same time, while meeting the oil return requirements, the opening area of ​​the oil return structure is minimized. This controls the amount of returned oil and prevents excessive second compressed gas from flowing back into the first cavity 13 through the oil return structure. Specifically, when the oil return structure is a circular hole or a circular tube, the diameter of the circular hole or tube is minimized.

[0060] In another embodiment, unlike the above embodiment, the housing 1 further comprises a main cavity, the first cavity 13 and the second cavity 14 are independent of the main cavity, and the compression mechanism 2 is disposed within the main cavity. The first compressed gas undergoes oil-gas separation in the first cavity 13, and the second compressed gas undergoes oil-gas separation in the second cavity 14.

[0061] At this time, an oil return structure is provided between the first cavity 13 and the main cavity, and between the second cavity 14 and the main cavity, so as to fully utilize the oil separated by the first cavity 13 and the second cavity 14. The specific structure of the oil return structure can be the same as that of the above embodiment.

[0062] In another embodiment, the housing 1 includes a first housing 15 and a second housing 16 disposed outside the first housing 15 . The first housing 15 defines a first cavity 13 , and a second cavity 14 is defined between the first housing 15 and the second housing 16 .

[0063] The first housing 15 can be an existing compressor housing, and the second housing 16 can be attached to the first housing 15 by welding or other methods. This facilitates modification of existing compressor housings and reduces the cost of remolding. It should be noted that after the second housing 16 is connected to the first housing 15, a seal must be ensured between the second housing 16 and the first housing 15 to prevent compressed gas leakage. Of course, the first and second housings 15, 16, can also be remolded.

[0064] In another embodiment, the first exhaust structure 11 is connected to the top of the first shell 15, and the second exhaust structure 12 is connected to the top of the second shell 16, which adapts to the upward flow of gas and facilitates exhaust.

[0065] When the compressor is a vertical structure, the connection position of the first exhaust structure 11 and the second exhaust structure 12 helps to increase the flow path of the compressed gas, thereby improving the oil-gas separation effect.

[0066] In another embodiment, the second shell 16 is covered on a part of the outer wall or the entire outer wall of the first shell 15. The second shell 16 has various shapes and a flexible structure and can be set according to needs, with a wide range of applications.

[0067] The second housing 16 covers a portion of the outer wall of the first housing 15, sufficient to meet the requirements for oil-gas separation. The portion of the first housing 15 not covered by the second housing 16 can also be connected to other structures. The second housing 16 covers the entire outer wall of the first housing 15, enclosing the first housing 15. This enlarges the second cavity 14 and improves oil-gas separation. Furthermore, the double-layer structure of the housing 1 also provides noise reduction.

[0068] In another embodiment, when the first cavity 13 and the second cavity 14 are provided with an oil return component, the oil return component is an oil return hole 151 formed in the first housing 15. The oil return hole 151 has a simple structure, the first housing 15 is easy to process, and the housing 1 and the compressor structure are simplified, which helps reduce the cost of the compressor.

[0069] Furthermore, one or more oil return holes 151 are provided on the wall surface of the first housing 15 corresponding to the second cavity 14 to meet oil return requirements. These holes can be provided as needed. Specifically, the oil return holes 151 are positioned below the connection point between the second compression chamber 231 and the second cavity 14, and as close to the bottom of the first housing 15 as possible.

[0070] In another embodiment, an oil separation component may be provided in the second cavity 14 to promote oil-gas separation and enhance the oil-gas separation effect. The oil separation component may be a pipe, plate, or other structure provided in the second cavity 14 that can promote oil-gas separation, and will not be described in detail here.

[0071] In another embodiment, the housing 1 further defines a third cavity (not shown in the figure), and an air suction cavity is further provided in the compression mechanism 2, which is connected to the third cavity. Before the gas enters the air suction cavity, gas-liquid separation is performed in the third cavity. The third cavity functions as a liquid reservoir 3, which is also integrated into the housing 1. There is no need for an additional liquid reservoir 3, which helps to reduce the volume and save space. In addition, the provision of the third cavity can also utilize the cooling capacity of the gas or liquid in the liquid reservoir 3 to cool the housing 1.

[0072] Specifically, the housing 1 further includes a third housing (not shown in the figure). The third housing and the second housing 16 are both disposed outside the first housing 15, and the third housing and the second housing 16 each cover a portion of the outer wall of the first housing 15. Furthermore, when the second housing 16 covers the entire outer wall of the first housing 15, the third housing can also cover the outer wall of the second housing 16; alternatively, the third housing can also cover the entire outer wall of the first housing 15, in which case the second housing 16 covers the outer wall of the third housing.

[0073] In another embodiment, unlike the above embodiment, a partition structure (not shown) is provided within the housing 1. The partition structure divides the space within the housing 1 into a first cavity 13 and a second cavity 14. The housing 1 does not need to be provided with a first shell 15 and a second shell 16, facilitating integrated processing. The partition structure can further separate a third cavity within the housing 1 as needed.

[0074] Next, an embodiment of the compression mechanism 2 will be described.

[0075] In another embodiment, combined Figure 3 and Figure 4As shown, the compression mechanism 2 also includes: a second cylinder, the second cylinder includes a second connecting channel (not shown in the figure) and a second air intake channel 232, a second compression chamber 231 and a second suction chamber are restricted in the second cylinder, and the second air intake channel 232 is connected to the second suction chamber; the second connecting channel connects the second cavity 14 and the second compression chamber 231, and the second connecting channel and the second air intake channel 232 are located on opposite sides of the second cylinder.

[0076] When the second air intake channel 232 is connected to the pipe for air intake and the second connecting channel is connected to the pipe for air outlet, the second connecting channel and the second air intake channel 232 are arranged relative to each other, which helps to ensure the symmetry of the forces on both sides of the second cylinder and the first shell 15, and also improves the stability of the compression mechanism 2, thereby ensuring the smooth operation of the compression process of the compression mechanism 2.

[0077] In another embodiment, the compression mechanism 2 further includes a second muffler 26. A muffler chamber 261 of the second muffler 26 connects the second compression chamber 231 and the second connecting channel. The second compressed gas passes through the second muffler 26 to reduce noise before entering the second chamber 14. When the compressor is used in the field of household appliances, it can reduce the noise generated by the household appliances, improve the quietness effect, and thus help improve the user experience.

[0078] In another embodiment, unlike the above embodiment, the muffler chamber 261 of the second muffler 26 is directly connected to the second cavity 14. In this case, no second connecting channel is required on the second cylinder, simplifying the structure of the second cylinder. In this case, the muffler exhaust port corresponding to the muffler chamber 261 can be directly connected to the opening in the first housing 15 or connected via a pipe.

[0079] In the above embodiment, when the noise generated by the gas is within an acceptable range, the compression mechanism 2 may not be provided with the second muffler 26 to reduce costs and reduce the volume of the compression mechanism 2 .

[0080] In another embodiment, the compression mechanism 2 further includes a first cylinder, the first cylinder including a first connecting channel 212 and a first air intake channel 213. A first compression chamber 211 and a first air intake chamber are formed in the first cylinder, and the first air intake channel 213 is connected to the first air intake chamber. The first connecting channel 212 connects the second compression chamber 231 and the second chamber 14, and the first connecting channel 212 and the first air intake channel 213 are located on opposite sides of the first cylinder. The first connecting channel 212 is independent of the first compression chamber 211 and the first air intake chamber and is used only to discharge the second compressed gas.

[0081] The first connecting channel 212 directly connects the second cavity 14 and the second compression chamber 231 , and in this case, no second connecting channel is required to be provided on the second cylinder.

[0082] When the second cylinder is limited by installation space or structural shape, so that the exhaust port position of the muffler chamber 261 does not correspond to the position of the opening on the first housing 15 and cannot be directly connected, the above-mentioned method of providing a first connecting channel 212 on the first cylinder can be adopted to connect the second compression chamber 231 with the second cavity 14. The first connecting channel 212 is arranged opposite to the first air inlet channel 213, and the pipes on both sides of the first cylinder are connected symmetrically, ensuring that the two sides of the first cylinder are symmetrically stressed, improving the symmetry and stability of the first cylinder, and thus improving the operating smoothness of the compression mechanism 2.

[0083] In one embodiment, the first cylinder and the second cylinder are coaxially arranged. The first cylinder includes a first cylinder body 21, and the second cylinder includes a second cylinder body 23. A second muffler 26, a second baffle 28, the second cylinder body 23, a first baffle 27, and the first cylinder body 21 are arranged in order from bottom to top along the axial direction of the first cylinder body 21 and the second cylinder body 23. The second baffle 28, the second cylinder body 23, and the first baffle 27 are each provided with through holes that interpenetrate one another. A through flow channel is formed between the muffler cavity 261 of the second muffler 26, the through hole of the second baffle 28, the through hole of the second cylinder body 23, the through hole of the first baffle 27, and the first connecting channel 212. The second compressed gas flows through the second muffler 26, the through hole of the second baffle 28, the through hole of the second cylinder body 23, the through hole of the first baffle 27, the first connecting channel 212, and then enters the second cavity 14.

[0084] In this embodiment, a through flow channel is formed in the structural components of the compression mechanism 2, eliminating the need for additional pipes, reducing structural components, simplifying the structure, facilitating assembly, and reducing costs.

[0085] In the above embodiment, the double exhaust of the compressor relies on compression inside the cylinder. The structural form can be a rotary compressor, piston compressor, screw compressor, centrifugal compressor, etc. with two compression chambers. Other structures with two compression chambers are also acceptable. The specific compression form is not limited and will not be repeated here.

[0086] Next, combine Figures 1 to 4 As shown, a vertical rotary compressor is taken as an example for further explanation.

[0087] The rotary compressor includes a housing 1, a drive mechanism 5, a compression mechanism 2, and a base 4. The housing 1 is connected to the base 4 and is a vertical tank. The housing 1 includes a first housing 15 and a second housing 16. The drive mechanism 5 and the compression mechanism 2 are disposed within the first housing 15. The drive mechanism 5 is disposed above the compression mechanism 2. Specifically, the drive mechanism 5 includes a drive motor and an eccentric crankshaft 51. The drive motor drives the eccentric crankshaft 51 to rotate.

[0088] The compression mechanism 2 includes a first cylinder and a second cylinder. The first cylinder includes a first cylinder body 21 and a first rotor 22. The second cylinder includes a second cylinder body 23 and a second rotor 24. The first and second rotors 22 and 24 are connected to an eccentric crankshaft 51, which drives the first and second rotors 22 and 24 to rotate. The second cylinder body 23 is located below the first cylinder body 21. The first and second cylinder bodies 21 and 23 are separated by a first partition 27.

[0089] An upper bearing is provided above the first cylinder body 21, and a first partition structure is provided between the first cylinder body 21 and the first rotor 22. The first partition plate 27, the first cylinder body 21, the first rotor 22, the first partition structure, and the upper bearing define a first compression chamber 211 and a first intake chamber. The first intake chamber is connected to the first intake channel 213. Gas enters the first intake chamber and is compressed to form a first compressed gas. The first compressed gas is discharged along the first compression chamber 211 and then enters the first muffler 25 above the first cylinder body 21. After being silenced, it enters the first cavity 13 and is then discharged from the first exhaust structure 11. At the same time, the first compressed gas undergoes oil and gas separation within the first cavity 13.

[0090] A second partition plate 28 is provided below the second cylinder body 23, and a second partition structure is provided between the second cylinder body 23 and the second rotor 24. The second partition plate 28, the second cylinder body 23, the second rotor 24, the second partition structure and the first partition plate 27 limit a second compression chamber 231 and a second intake chamber, and the second intake chamber is connected to the second air inlet channel 232. After entering the second intake chamber, the gas is compressed to form a second compressed gas, which is discharged along the second compression chamber 231 and then enters the second muffler 26 below the second cylinder body 23. After being silenced, it enters the second cavity 14 and is then discharged from the second exhaust structure 12. At the same time, the second compressed gas is separated from oil and gas in the second cavity 14. Among them, the first air inlet channel 213 and the second air inlet channel 232 correspond to different heights of the first shell 15 and are parallel to each other.

[0091] Among them, the first muffler 25, the upper bearing, the first cylinder body 21, the first partition 27, the second cylinder body 23, the second partition 28, the second muffler 26 and other components are connected by fasteners such as bolts and screws, and are provided with mounting holes for connecting fasteners.

[0092] Another embodiment of the present invention provides a compressor assembly comprising a liquid reservoir 3 and the compressor of the above embodiment. The liquid reservoir 3 is connected to the suction chamber of the compression mechanism 2 and is used for gas-liquid separation and for passing the separated gas into the compression mechanism 2. Before the suction chamber is admitted, the gas undergoes gas-liquid separation within the liquid reservoir 3 to remove liquid droplets carried in the gas and prevent them from interfering with the operation of the compression mechanism 2. The liquid reservoir 3 is an independent structure from the compressor, making it easy to replace and providing a more flexible structure.

[0093] When the compressor assembly includes the liquid accumulator 3 , there is no need to provide a third cavity in the compressor housing 1 .

[0094] Specifically, the liquid reservoir 3 includes a first inlet 31, a first outlet 32, and a second outlet 33. The first inlet 31 is for gas to enter, the first outlet 32 ​​is connected to the first suction chamber of the first cylinder, and the second outlet 33 is connected to the second suction chamber of the second cylinder. A single liquid reservoir 3 provides two gas lines to the compressor, simplifying the structure, volume, and weight of the compressor assembly. The first inlet 31, the first outlet 32, and the second outlet 33 can all be openings opened on the tank body of the liquid reservoir 3 or openings provided in pipe fittings on the tank body of the liquid reservoir 3.

[0095] Another embodiment of the present invention provides a heat exchange system, comprising two heat exchange branches and the compressor in the above embodiment, and each heat exchange branch includes a condenser, a throttling device, and an evaporator; the condenser inlet of one heat exchange branch is connected to the first exhaust structure 11, and the condenser inlet of the other heat exchange branch is connected to the second exhaust structure 12.

[0096] According to the system pressure of the two heat exchange branches, the opening pressures of the exhaust valve corresponding to the first compression chamber 211 and the exhaust valve corresponding to the second compression chamber 231 are determined to achieve different exhaust pressures for the first exhaust channel and the second exhaust channel.

[0097] Furthermore, the heat exchange system has multiple operating modes. Generally, the pressure of the first compressed gas discharged from the first exhaust channel is different from the pressure of the second compressed gas discharged from the second exhaust channel. Figures 1 to 4 Taking the compressor shown as an example, the pressure of the first compressed gas discharged from the first exhaust channel is lower than the pressure of the second compressed gas discharged from the second exhaust channel. The second cavity 14 is connected to the oil pool in the first cavity 13 through the oil return structure, and the pressure difference of the compressed gas is used to return the oil, which helps to simplify the compressor structure and ensure the stability of the operation of the heat exchange system.

[0098] Another embodiment of the present invention provides an electrical device, further comprising the heat exchange system of the above embodiment. The electrical device can adopt the heat exchange system of all the above embodiments, and thus has at least the beneficial effects brought by the above embodiments, which will not be repeated here.

[0099] 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, heat pump clothes dryer, or heat pump dishwasher, etc. Of course, the electrical equipment may also be other devices using a heat exchange system, which are not exhaustive here.

[0100] 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: a housing defining a first cavity and a second cavity, wherein a first exhaust structure and a second exhaust structure are provided on the housing, wherein the first exhaust structure is in communication with the first cavity, and the second exhaust structure is in communication with the second cavity; A compression mechanism, wherein a first compression chamber and a second compression chamber are provided in the compression mechanism, the first compression chamber is communicated with the first cavity, and the second compression chamber is communicated with the second cavity; The housing includes a first housing and a second housing provided outside the first housing, the first housing defining the first cavity, the second cavity defined between the first and second housings, and the second housing covering a portion of or the entire outer wall of the first housing; The compression mechanism is disposed in the first cavity. An oil return component is disposed between the first cavity and the second cavity. The position of the oil return component is lower than the communication position between the second compression chamber and the second cavity.

2. The compressor according to claim 1, characterized in that The exhaust pressure of the first compression chamber is lower than the exhaust pressure of the second compression chamber.

3. The compressor according to claim 1, characterized in that The first exhaust structure is connected to the top of the first shell, and the second exhaust structure is connected to the top of the second shell.

4. The compressor according to claim 1, characterized in that When an oil return component is provided between the first cavity and the second cavity, an oil return hole is configured on the first shell.

5. The compressor according to any one of claims 1 to 2, characterized in that: The compression mechanism further comprises: a first cylinder, the first cylinder comprising a first connecting channel and a first air intake channel, the first compression chamber and the first air suction chamber being formed in the first cylinder, the first air intake channel being in communication with the first air suction chamber; The first connecting channel connects the second compression chamber and the second cavity, and the first connecting channel and the first air intake channel are located on opposite sides of the first cylinder.

6. The compressor according to any one of claims 1 to 2, characterized in that: The compression mechanism further comprises: a second cylinder, the second cylinder comprising a second connecting channel and a second air intake channel, the second compression chamber and the second air suction chamber being defined in the second cylinder, the second air intake channel being in communication with the second air suction chamber; The second connecting channel communicates with the second compression chamber and the second cavity, and the second connecting channel and the second air intake channel are located on opposite sides of the second cylinder.

7. The compressor according to claim 1, characterized in that The shell further defines a third cavity, and the compression mechanism further includes an air suction cavity, which is communicated with the third cavity.

8. A compressor assembly, characterized in that: The invention comprises a liquid accumulator and the compressor according to any one of claims 1 to 6, wherein the liquid accumulator is connected to the suction chamber of the compression mechanism.

9. A heat exchange system comprising two heat exchange branches, each of which comprises a condenser, a throttling device and an evaporator, characterized in that: It also includes the compressor according to any one of claims 1 to 7; the condenser inlet of one of the heat exchange branches is connected to the first exhaust structure, and the condenser inlet of the other heat exchange branch is connected to the second exhaust structure.

10. An electrical device, characterized in that: Also included is the heat exchange system of claim 9.

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