Compressor and refrigeration apparatus

Abstract

The application discloses a compressor and a refrigeration device. The compressor comprises a shell, an air inlet cavity is arranged in the shell, a compression structure is arranged in the air inlet cavity, the compression structure comprises a static disc and a dynamic disc, a compression cavity is enclosed between the static disc and the dynamic disc, and the compression cavity is communicated with the air inlet cavity; a bypass structure is arranged in the air inlet cavity, the bypass structure is communicated with the compression cavity and the air inlet cavity, a valve body is arranged for opening and closing the bypass structure, the minimum flow cross-sectional area of the bypass structure is denoted as A (m 2 ), the full-load suction volume of the compressor is denoted as Vs (m 3 ), the rotating speed of the compressor is denoted as n (s ‑1 ), the refrigerant density of the suction port of the compressor is denoted as p (kg / m 3 ), and the minimum suction pressure of the compressor is denoted as Ps (N / m 2 ); wherein, 2.1 <= lambda <= 2.4, and lambda is a real number. The flow resistance of the bypass structure is reasonably set, so that the bypass structure cannot generate excessive pressure loss, and the energy efficiency of the refrigeration device can be improved.

Description

Technical Field

[0001] This application belongs to the field of compressor technology, specifically relating to a compressor and refrigeration equipment. Background Technology

[0002] Refrigeration equipment includes variable-capacity compressors. In related technologies, a bypass structure is incorporated within the compressor to pre-discharge some refrigerant, thereby reducing displacement and energy consumption. However, if the bypass structure is poorly designed, failing to consider the compressor's operating parameters when setting the minimum flow cross-sectional area, it results in excessive flow resistance, insufficient refrigerant leakage, and an excessively high flow rate, leading to compression losses and reduced energy efficiency. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art or related technologies.

[0004] Therefore, the first aspect of this application proposes a compressor.

[0005] The second aspect of this application proposes a refrigeration device.

[0006] In view of this, the first aspect of this application proposes a compressor, comprising: a housing, wherein an intake chamber is provided within the housing; a compression structure disposed in the intake chamber, the compression structure including a stationary disc and a moving disc, the stationary disc and the moving disc enclosing a compression chamber, the compression chamber communicating with the intake chamber; a bypass structure, at least a portion of the bypass structure being disposed in the intake chamber, the bypass structure communicating with the compression chamber and the intake chamber; and a valve body for opening and closing the bypass structure; the minimum flow cross-sectional area of ​​the bypass structure is denoted as A(m²). 2 The full-load suction volume of the compressor is denoted as Vs (m³). 3 The compressor speed is denoted as n(s). -1 The refrigerant density at the compressor's suction port is denoted as ρ (kg / m³). 3 The minimum suction pressure of the compressor is denoted as Ps (N / m³). 2 );in, λ is a real number, and 2.1≤λ≤2.4.

[0007] This application provides a compressor comprising a housing, a compression structure, a bypass structure, and a valve body. An intake chamber is provided within the housing, the compression structure is located within the intake chamber, and at least a portion of the bypass structure is located within the intake chamber.

[0008] The compression structure includes a stationary disc and a moving disc, which enclose a compression chamber. The compression chamber is connected to the intake chamber.

[0009] At least a portion of the bypass structure is located in the intake chamber, connecting the compression chamber and the intake chamber. The valve body can open or close the bypass structure. That is, when the valve body opens the bypass structure, some refrigerant in the compression chamber can leak into the intake chamber through the bypass structure; when the valve body closes the bypass structure, some refrigerant in the compression chamber cannot leak into the intake chamber through the bypass structure.

[0010] When the compressor is operating at its first load (e.g., full load), the valve body closes the bypass structure, preventing refrigerant in the compression chamber from leaking into the intake chamber. The refrigerant is then drawn into the compression chamber through the intake chamber. Because the moving disc can rotate relative to the stationary disc, it compresses the refrigerant in the compression chamber. When the compressed refrigerant pressure reaches the discharge pressure, the refrigerant is discharged from the discharge port on the stationary disc into the compressor's discharge chamber, ensuring the compressor's operating efficiency. The discharge chamber is the high-pressure chamber, and the intake chamber is the low-pressure chamber.

[0011] When the compressor is operating under a second load (the second load is less than the first load, for example, the second load is half load), the valve body opens the bypass structure, and part of the refrigerant in the compression chamber is guided to the intake chamber through the bypass structure. That is, part of the refrigerant leaks back to the intake chamber through the bypass structure. This reduces the compressor's flow rate and power, and can improve the compressor's energy efficiency when operating under a second load.

[0012] The minimum cross-sectional area of ​​the bypass structure is denoted by A, and the unit is m. 2 The full-load suction volume of the compressor is denoted as Vs, and the unit is m³. 3 The compressor's rotational speed is denoted as n, and the unit is s. -1 The refrigerant density at the compressor's suction port is denoted as ρ, and its unit is kg / m³. 3 The minimum suction pressure of the compressor is denoted as Ps, and the unit is N / m³. 2 By appropriately setting the relationships between A, Vs, n, ρ, λ, and Ps, it can be made to satisfy... λ is a real number, 2.1 ≤ λ ≤ 2.4. Where N can be converted to kg•m / s 2 .

[0013] Therefore, the setting of A is related to Vs, n, ρ, λ, and Ps. The full-load suction volume Vs of the compressor represents the compressor's suction capacity under maximum load. The higher the compressor speed n, the greater the amount of refrigerant drawn in per unit time. The refrigerant density ρ at the compressor's suction port affects the mass of refrigerant per unit volume, thus affecting the actual refrigerant flow rate. The minimum suction pressure Ps of the compressor represents its suction capacity during low load or start-up. λ is a real number and can be defined as the minimum flow section coefficient of the bypass structure. Vs, n, ρ, and Ps reflect the actual needs of the compressor under different operating conditions. By associating A with Vs, n, ρ, λ, and Ps, the value range of A is linked to the actual operating data of the compressor. This satisfies the bypass requirements of the compressor under different operating conditions. The flow resistance of the bypass structure is reasonably set to ensure that the bypass structure does not generate excessive pressure loss. This allows some of the refrigerant in the compression structure to be discharged in time through the bypass structure when the compressor is operating under the second load. This can control the compressor flow rate, that is, ensure the amount of refrigerant leaked under load, avoid excessive flow of the refrigeration equipment, reduce compression loss, and thus improve the energy efficiency of the refrigeration equipment.

[0014] like If the pressure loss of the bypass structure is too large, the refrigerant discharge flow rate will be too small when the compressor is operating under the second load condition, the energy consumption of the compressor will increase, while the cooling capacity required by the refrigeration equipment remains unchanged, the energy efficiency of the whole machine will be significantly reduced, and the performance and market competitiveness of the product will be reduced.

[0015] In some technical solutions, the bypass structure may optionally include a bypass hole and a channel. The bypass hole is located on the stationary plate, the bypass hole connects the channel and the compression chamber, the channel also connects to the intake chamber, and the valve body is connected to the channel.

[0016] In this technical solution, the bypass structure is refined. The bypass structure includes a bypass hole and a channel. The bypass hole is located on the stationary plate and is connected to the compression chamber. The channel connects the bypass hole and the intake chamber. The valve body is connected to the channel.

[0017] When the bypass structure is open in the valve body, some refrigerant leaks from the bypass hole into the channel during the meshing compression process of the stationary and moving discs, and then leaks into the intake chamber through the channel.

[0018] The valve body is connected to the channel, and the opening and closing of the channel can be controlled by the valve body to achieve the purpose of the opening and closing bypass structure.

[0019] The bypass port is located on the stationary plate and is close to the compression chamber. That is, the inlet of the bypass structure is close to the area of ​​refrigerant that needs to be depressurized. It responds quickly and can release the refrigerant in the compression chamber quickly and in a timely manner, reducing the compression load.

[0020] In some technical solutions, the bypass structure may optionally include a bypass cavity, one end of the bypass hole extending into the compression cavity, and the other end of the bypass hole extending into the bypass cavity along the height direction of the compressor, with the bypass cavity being a connecting channel.

[0021] In this technical solution, the bypass structure also includes a bypass cavity. One end of the bypass hole extends into the compression cavity, and the other end of the bypass hole extends into the bypass cavity along the height direction of the compressor. The bypass cavity is connected to the channel; that is, the bypass hole and the channel are connected through the bypass cavity. When the valve body opens the bypass structure, some refrigerant leaks from the bypass hole into the bypass cavity during the meshing compression process of the stationary and moving discs, and then leaks through the bypass cavity into the channel, and finally into the intake chamber.

[0022] It is understandable that the flow cross-sectional area of ​​the bypass cavity is larger than that of the bypass orifice. That is, the refrigerant flows from the bypass orifice with a smaller flow cross-sectional area to the bypass cavity with a larger flow cross-sectional area. The bypass cavity with a larger flow cross-sectional area can provide a buffer space for the refrigerant. When the refrigerant flows into the bypass cavity at high speed from the bypass orifice, the expansion of the cavity volume will reduce the flow velocity of the refrigerant, which can alleviate pressure fluctuations. The refrigerant will diffuse to the surrounding low-pressure areas, so that the pressure gradually equalizes, avoiding turbulence or eddies caused by sudden changes in cross-section. This can reduce local flow resistance and energy loss, reduce flow noise and vibration, and improve the operating noise of the compressor.

[0023] In some technical solutions, optionally, a groove is provided on the side of the stationary plate away from the moving plate; the pressure plate of the compressor is located in the groove, and a bypass cavity is formed between the pressure plate and the groove wall.

[0024] In this technical solution, a groove is provided on the side of the stationary plate away from the moving plate. The groove serves to accommodate the pressure plate of the compressor. The pressure plate is located within the groove, and a bypass cavity is enclosed between the pressure plate and the groove wall. That is, the bypass cavity is defined as being formed by the pressure plate and the stationary plate. The side of the pressure plate away from the stationary plate and the compressor's float structure enclose a back pressure cavity, which can communicate with the compression cavity.

[0025] Therefore, this application makes reasonable use of the existing pressure plate structure of the compressor, which can ensure the effectiveness and reliability of forming the bypass cavity, while avoiding the additional material input to form the bypass cavity, thus helping to reduce the modification cost of the compressor.

[0026] In some technical solutions, optionally, there are multiple bypass holes, which are arranged at intervals.

[0027] In this technical solution, there are multiple bypass holes arranged at intervals, and any one of the bypass holes is connected to the bypass cavity. Since the flow cross-sectional area of ​​a single bypass hole is limited, by setting multiple bypass holes, the total flow area can be increased, thereby improving the overall flow capacity of the bypass structure.

[0028] If there is only one bypass orifice with a large cross-sectional area, the refrigerant flowing through it will have a high velocity, resulting in a relatively severe impact and easily causing local turbulence and fluctuations, leading to significant operating noise. However, by setting up multiple bypass orifices and arranging them at intervals, the refrigerant can flow to multiple bypass orifices simultaneously from multiple locations. Compared to a single bypass orifice with a large cross-sectional area, the refrigerant velocity in each bypass orifice of this application is relatively low, resulting in smoother flow, reduced local flow resistance, and consequently, reduced energy loss. Furthermore, it reduces the impact on the bypass orifices, which is beneficial for reducing operating noise.

[0029] In addition, the arrangement of multiple bypass holes at intervals allows the refrigerant to leak relatively evenly from multiple locations, rather than being concentrated in one bypass hole. This reduces the formation of local high-pressure areas in the compression chamber, making the pressure distribution more uniform. It avoids uneven stress distribution caused by excessive local pressure relief, which is beneficial to improving the stability and efficiency of the compression process.

[0030] In some technical solutions, optionally, the bypass structure is located on the periphery of the compression structure, a portion of the bypass structure extends along the height direction of the compressor, and the length of the portion of the bypass structure extending along the height direction of the compressor is adjustable.

[0031] In this technical solution, the bypass structure is refined.

[0032] The bypass structure is located around the compressor structure, and a portion of the bypass structure extends along the height direction of the compressor. The length of this portion of the bypass structure extending along the height direction of the compressor is adjustable. That is, the length of this portion of the bypass structure extending along the height direction of the compressor can be increased or decreased.

[0033] The stationary disc can move relative to the moving disc in the axial direction. In this way, under liquid or harsh operating conditions, the stationary disc can be separated from the moving disc in the axial direction to relieve pressure or avoid obstacles, thereby protecting the stationary disc.

[0034] Therefore, this application makes the length of the bypass structure extending along the height direction of the compressor adjustable. Thus, when the stationary disc moves axially relative to the moving disc, the length of this portion of the bypass structure extending along the height direction of the compressor adapts accordingly. When the stationary disc moves axially away from the moving disc, the length of this portion increases. When the stationary disc moves axially towards the moving disc, the length decreases. This ensures the effectiveness and feasibility of the bypass structure connecting the compression chamber and the intake chamber, while also preventing obstruction of the stationary disc's movement under liquid conditions or harsh operating conditions, thus meeting the requirements for protecting the stationary disc.

[0035] In addition, the length of the bypass structure extending along the height of the compressor is adjustable. The bypass structure can be flexibly adjusted in size according to the actual internal space of the compressor, so that the bypass structure can be used with different models of compressors, thereby improving the adaptability of the product.

[0036] In some technical solutions, the bypass structure may optionally include: a transfer pipe, located in the intake chamber, connected to the stationary disc, the transfer pipe communicating with a bypass hole, the inner surface of the transfer pipe enclosing a first part of the channel; a valve seat, at least a part of which is located in the intake chamber, arranged at intervals along the height direction of the compressor, the valve seat communicating with the intake chamber, the inner surface of the valve seat forming a second part of the channel, and a valve body located on the valve seat; and a connecting pipe, located in the intake chamber, connecting the transfer pipe and the valve seat, the inner surface of the connecting pipe enclosing a third part of the channel, the length of the portion of the connecting pipe located between the transfer pipe and the valve seat being adjustable.

[0037] In this technical solution, the bypass structure also includes a transfer pipe, a valve seat, and a connecting pipe.

[0038] The adapter pipe is located in the air intake chamber, at least a portion of the valve seat is located in the air intake chamber, and the connecting pipe is located in the air intake chamber.

[0039] Along the height direction of the compressor, the valve seat and the transfer pipe are arranged at intervals, the connecting pipe is located on the periphery of the compression structure, and the connecting pipe is connected between the transfer pipe and the valve seat.

[0040] The inner surface of the adapter pipe encloses the first part of the channel, the inner surface of the valve seat forms the second part of the channel, and the inner surface of the connecting pipe encloses the third part of the channel. In other words, the adapter pipe, valve seat, and connecting pipe together form the channel. The adapter pipe connects to the bypass port, and the valve seat connects to the intake chamber, thus meeting the requirements for a bypass structure connecting the compression chamber and the intake chamber.

[0041] The length of the connecting pipe between the adapter and the valve seat is adjustable. When the stationary disc moves axially away from the moving disc, the length of this section increases. When the stationary disc moves axially towards the moving disc, the length decreases. This ensures that the bypass structure does not obstruct the movement of the stationary disc under liquid conditions or harsh operating conditions, thus meeting the requirements for protecting the stationary disc.

[0042] Understandably, the valve body is located on the valve seat, which serves as the mounting carrier for the valve body. It has the function of installing and fixing the valve body, ensuring the fit dimensions between the valve body and the passage, and providing structural support for the effective opening and closing of the passage.

[0043] In some technical solutions, optionally, the first part of the connecting pipe is slidably connected to the adapter pipe, and a first sealing ring is provided at the connection between the first part of the connecting pipe and the adapter pipe, and the first part of the connecting pipe is slidably connected to the adapter pipe through the first sealing ring; and / or the second part of the connecting pipe is slidably connected to the valve seat, and a second sealing ring is provided at the connection between the second part of the connecting pipe and the valve seat, and the second part of the connecting pipe is slidably connected to the valve seat through the second sealing ring.

[0044] In this technical solution, the first part of the connecting pipe is slidably connected to the adapter pipe. Alternatively, the second part of the connecting pipe is slidably connected to the valve seat. Or, the first part of the connecting pipe is slidably connected to the adapter pipe, and the second part of the connecting pipe is slidably connected to the valve seat.

[0045] With the first part of the connecting pipe slidably connected to the adapter pipe and the connecting pipe fixedly connected to the valve seat, when the stationary disc moves axially away from the moving disc, the length of the portion of the connecting pipe between the adapter pipe and the valve seat increases; when the stationary disc moves axially towards the moving disc, the length of the portion of the connecting pipe between the adapter pipe and the valve seat decreases. This satisfies the requirement for adjustable length of the portion of the connecting pipe between the adapter pipe and the valve seat.

[0046] With the second part of the connecting pipe slidably connected to the valve seat and the connecting pipe fixedly connected to the adapter pipe, when the stationary disc moves axially away from the moving disc, the length of the portion of the connecting pipe between the adapter pipe and the valve seat increases; when the stationary disc moves axially towards the moving disc, the length of the portion of the connecting pipe between the adapter pipe and the valve seat decreases. This satisfies the requirement for adjustable length of the portion of the connecting pipe between the adapter pipe and the valve seat.

[0047] With the first part of the connecting pipe slidably connected to the adapter pipe and the second part of the connecting pipe slidably connected to the valve seat, when the stationary disc moves axially away from the moving disc, the length of the portion of the connecting pipe between the adapter pipe and the valve seat increases; when the stationary disc moves axially towards the moving disc, the length of the portion of the connecting pipe between the adapter pipe and the valve seat decreases. This satisfies the requirement for adjustable length of the portion of the connecting pipe between the adapter pipe and the valve seat.

[0048] When the first part of the connecting pipe is slidably connected to the adapter pipe, the bypass structure also includes a first sealing ring located at the connection between the first part of the connecting pipe and the adapter pipe. For example, the first sealing ring may be fitted onto the outer peripheral wall of the first part of the connecting pipe, allowing the connecting pipe to slidably connect to the adapter pipe via the first sealing ring. Alternatively, the first sealing ring may be fitted onto the inner surface of the adapter pipe, allowing the connecting pipe to slidably connect to the adapter pipe via the first sealing ring. This not only meets the requirement of a slidable connection between the first part of the connecting pipe and the adapter pipe, but the first sealing ring also seals the connection between the connecting pipe and the adapter pipe, preventing refrigerant leakage through the connection and providing structural support for ensuring the refrigerant flow path.

[0049] When the second part of the connecting pipe is slidably connected to the valve seat, the bypass structure also includes a second sealing ring, located at the connection between the second part of the connecting pipe and the valve seat. For example, the second sealing ring may be fitted onto the outer peripheral wall of the second part of the connecting pipe, allowing the connecting pipe to slidably connect to the valve seat via the second sealing ring. Alternatively, the second sealing ring may be fitted onto the inner surface of the valve seat, allowing the connecting pipe to slidably connect to the valve seat via the second sealing ring. This not only meets the requirement of a slidable connection between the second part of the connecting pipe and the valve seat, but the second sealing ring also seals the connection between the connecting pipe and the valve seat, preventing refrigerant leakage through this connection and providing structural support to ensure the refrigerant flow path.

[0050] In some technical solutions, optionally, when the first part of the connecting pipe is slidably connected to the adapter pipe, the adapter pipe is provided with a first boss, which is used to limit the maximum depth to which the first part of the connecting pipe extends into the adapter pipe; when the second part of the connecting pipe is slidably connected to the valve seat, the valve seat is provided with a second boss, which is used to limit the maximum depth to which the second part of the connecting pipe extends into the valve seat.

[0051] In this technical solution, when the first part of the connecting pipe is slidably connected to the adapter pipe, a first boss is provided inside the adapter pipe. The first boss is used to limit the maximum depth of the first part of the connecting pipe extending into the adapter pipe. In other words, the first boss limits the maximum length of the first part of the connecting pipe inside the adapter pipe, providing structural support to ensure the fit dimensions of the connecting pipe, adapter pipe and valve seat.

[0052] When the second part of the connecting pipe is slidably connected to the valve seat, the valve seat is provided with a second boss. The second boss is used to limit the maximum depth of the second part of the connecting pipe into the valve seat. In other words, the second boss limits the maximum length of the second part of the connecting pipe inside the valve seat, providing structural support to ensure the fit dimensions of the connecting pipe, the adapter pipe and the valve seat.

[0053] In some technical solutions, optionally, the connecting pipe is a telescopic pipe, and the adapter pipe and valve seat are both fixedly connected to the connecting pipe.

[0054] In this technical solution, the connecting pipe is a telescopic pipe with an adjustable length. One end of the connecting pipe is fixedly connected to the adapter pipe, and the other end of the connecting pipe is fixedly connected to the valve seat.

[0055] When the stationary disc moves axially away from the moving disc, the distance between the adapter pipe and the valve seat increases, and the telescopic pipe extends accordingly. When the stationary disc moves axially towards the moving disc, the distance between the adapter pipe and the valve seat decreases, and the telescopic pipe shortens accordingly. This allows for adjustable length of the portion of the connecting pipe located between the adapter pipe and the valve seat.

[0056] In some technical solutions, alternatively, with one part of the valve seat located inside the intake chamber, another part of the valve seat extends out of the outer surface of the housing.

[0057] In this technical solution, the mating structure between the valve seat and the housing is refined.

[0058] With one part of the valve seat located inside the intake chamber, the other part extends beyond the outer surface of the housing. That is, the other part of the valve seat is located outside the housing. This reduces the space occupied by the valve seat within the housing, optimizes the compact layout of the compressor's internal components, and facilitates the miniaturization and integration of the entire unit. Simultaneously, the operator can observe the working status of the valve seat and valve body from the outside of the housing, facilitating the installation, adjustment, and maintenance of the valve body.

[0059] In addition, the valve body is located on the valve seat, which is closer to the intake chamber and the external environment. The valve body is also closer to the bypass structure channel, resulting in a shorter and more direct connection path between the valve body and the channel. This reduces the delay in control signal transmission and helps improve control sensitivity.

[0060] In some technical solutions, the valve seat may optionally surround the valve body, and the valve body and valve seat may be detachably connected.

[0061] In this technical solution, the mating structure of the valve seat and valve body is refined.

[0062] The valve seat surrounds the valve body, and the valve body and valve seat are detachably connected. The connection method between the valve body and valve seat includes any one or a combination of the following: snap-fit, screw connection, magnetic attraction, and fastening with fasteners (such as screws, bolts, or rivets). The disassembly of the valve body and valve seat, as well as the installation position of the valve body relative to the valve seat, can be determined according to actual conditions, thus adapting to the usage requirements of different compressor models. The product has strong adaptability, facilitates the maintenance, replacement, cleaning, and adjustment of the valve body, improves the efficiency of valve body assembly and disassembly, and enhances the product's performance.

[0063] In addition, with one part of the valve seat located inside the air intake chamber, the other part of the valve seat extends out of the outer surface of the housing, and the valve seat surrounds the valve body. In this way, the valve body can be installed separately, which makes it easy to check whether the connection between the valve body and the valve seat is in place, easy to check whether the seal is good, and easy to check the working status of the valve body.

[0064] The second aspect of this application provides a refrigeration device, comprising: the compressor described in the first aspect.

[0065] The refrigeration equipment provided in this application includes a compressor as described in the first aspect, and therefore has all the beneficial effects of the compressor, which will not be described in detail here.

[0066] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0067] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0068] Figure 1 A schematic diagram of the first part of a compressor according to an embodiment of this application is shown;

[0069] Figure 2 A schematic diagram of the second part of the compressor according to an embodiment of this application is shown;

[0070] Figure 3 A schematic diagram of the third part of a compressor according to an embodiment of this application is shown;

[0071] Figure 4 A partial structural schematic diagram of a compression structure according to an embodiment of this application is shown;

[0072] Figure 5 A schematic diagram of the fourth part of a compressor according to an embodiment of this application is shown.

[0073] Figure label:

[0074] 10 Compressor, 100 Housing, 110 Intake Chamber, 200 Compression Structure, 210 Stationary Plate, 212 Groove, 220 Moving Plate, 230 Compression Chamber, 300 Bypass Structure, 310 Bypass Hole, 320 Channel, 330 Bypass Chamber, 340 Adaptor Pipe, 342 First Boss, 350 Valve Seat, 352 Second Boss, 360 Connecting Pipe, 362 First Part of Connecting Pipe, 364 Second Part of Connecting Pipe, 372 First Sealing Ring, 374 Second Sealing Ring, 380 Valve Body, 400 Pressure Plate. Detailed Implementation

[0075] The embodiments of this utility model will now be described in detail. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0076] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0077] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0078] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0079] The following is combined Figures 1 to 5 This invention describes a compressor 10 and a refrigeration device according to an embodiment of the present invention.

[0080] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the compressor 10 according to some embodiments of the present invention includes: a housing 100, with an intake chamber 110 inside the housing 100; a compression structure 200 disposed in the intake chamber 110, the compression structure 200 including a stationary disc 210 and a moving disc 220, the stationary disc 210 and the moving disc 220 enclosing a compression chamber 230, the compression chamber 230 communicating with the intake chamber 110; a bypass structure 300, at least a portion of the bypass structure 300 disposed in the intake chamber 110, the bypass structure 300 communicating with the compression chamber 230 and the intake chamber 110; and a valve body 380 for opening and closing the bypass structure 300; the minimum flow cross-sectional area of ​​the bypass structure 300 is denoted as A (m²). 2 The full-load suction volume of compressor 10 is denoted as Vs (m³). 3 The rotational speed of compressor 10 is denoted as n (s). -1 The refrigerant density at the suction port of compressor 10 is denoted as ρ (kg / m³). 3 The minimum suction pressure of compressor 10 is denoted as Ps (N / m). 2 );in, λ is a real number, and 2.1≤λ≤2.4.

[0081] The compressor 10 according to an embodiment of the present invention includes a housing 100, a compression structure 200, a bypass structure 300, and a valve body 380. An intake chamber 110 is provided inside the housing 100, the compression structure 200 is disposed in the intake chamber 110, and at least a portion of the bypass structure 300 is disposed in the intake chamber 110.

[0082] The compression structure 200 includes a stationary disc 210 and a moving disc 220, and a compression chamber 230 is enclosed between the stationary disc 210 and the moving disc 220. The compression chamber 230 is connected to the intake chamber 110.

[0083] At least a portion of the bypass structure 300 is located in the intake chamber 110. The bypass structure 300 connects the compression chamber 230 and the intake chamber 110. The valve body 380 can open or close the bypass structure 300. That is, when the valve body 380 opens the bypass structure 300, some refrigerant in the compression chamber 230 can leak into the intake chamber 110 through the bypass structure 300. When the valve body 380 closes the bypass structure 300, some refrigerant in the compression chamber 230 cannot leak into the intake chamber 110 through the bypass structure 300.

[0084] When the compressor 10 is operating under the first load (e.g., full load), the valve body 380 closes the bypass structure 300, preventing the refrigerant in the compression chamber 230 from leaking into the intake chamber 110 through the bypass structure 300. The refrigerant is drawn into the compression chamber 230 through the intake chamber 110. Since the moving plate 220 can rotate relative to the stationary plate 210 to compress the refrigerant in the compression chamber 230, when the pressure of the compressed refrigerant reaches the discharge pressure, the refrigerant is discharged from the discharge port on the stationary plate 210 to the discharge chamber of the compressor 10, ensuring the operating efficiency of the compressor 10. The discharge chamber is a high-pressure chamber, and the intake chamber 110 is a low-pressure chamber.

[0085] When the compressor 10 is operating under a second load (the second load is less than the first load, for example, the second load is half load), the valve body 380 opens the bypass structure 300, and part of the refrigerant in the compression chamber 230 is guided to the intake chamber 110 through the bypass structure 300. That is, part of the refrigerant leaks back to the intake chamber 110 through the bypass structure 300. This will reduce the flow and power of the compressor 10 and improve the energy efficiency of the compressor 10 when it is operating under a second load.

[0086] The minimum cross-sectional area of ​​the bypass structure 300 is denoted as A, and the unit is m. 2 The full-load suction volume of compressor 10 is denoted as Vs, and the unit is m³. 3 The rotational speed of compressor 10 is denoted as n, and the unit is s. -1 The refrigerant density at the suction port of compressor 10 is denoted as ρ, and the unit is kg / m³. 3 The minimum suction pressure of compressor 10 is denoted as Ps, and the unit is N / m³. 2 By appropriately setting the relationships between A, Vs, n, ρ, λ, and Ps, it can be made to satisfy... λ is a real number, 2.1 ≤ λ ≤ 2.4. Where N can be converted to kg•m / s 2 .

[0087] Therefore, the setting of A is related to Vs, n, ρ, λ, and Ps. The full-load suction volume Vs of compressor 10 represents the suction capacity of compressor 10 under maximum load. The higher the rotational speed n of compressor 10, the greater the amount of refrigerant drawn in per unit time. The refrigerant density ρ at the suction port of compressor 10 affects the mass of refrigerant per unit volume, thus affecting the actual refrigerant flow rate. The minimum suction pressure Ps of compressor 10 represents the suction capacity of compressor 10 during low load or start-up. λ is a real number and can be defined as the minimum flow section coefficient of the bypass structure 300. Vs, n, ρ, and Ps can reflect the actual needs of compressor 10 under different operating conditions. By associating A with Vs, n, ρ, λ, and Ps, the value range of A is set to be related to the actual operating data of compressor 10. This can meet the bypass requirements of compressor 10 under different operating conditions. The flow resistance of bypass structure 300 is reasonably set to ensure that bypass structure 300 will not generate excessive pressure loss. When compressor 10 is in the second load operating state, some refrigerant in compression structure 200 can be discharged in time through bypass structure 300. The flow rate of compressor 10 can be controlled, that is, the amount of refrigerant leaked under load is guaranteed, and the situation of excessive flow of refrigeration equipment is avoided. This can reduce compression loss and thus improve the energy efficiency of refrigeration equipment.

[0088] like If the pressure loss of the bypass structure 300 is too large, the refrigerant discharge flow of the compressor 10 under the second load operation state will be too small, the energy consumption of the compressor 10 will increase, while the cooling capacity required by the refrigeration equipment remains unchanged, the energy efficiency of the whole machine will be significantly reduced, and the performance and market competitiveness of the product will be reduced.

[0089] Examples include λ=2.12, λ=2.14, λ=2.15, λ=2.16, λ=2.17, λ=2.2, λ=2.22, λ=2.23, λ=2.25, λ=2.27, λ=2.29, λ=2.3, λ=2.31, λ=2.32, λ=2.34, λ=2.35, λ=2.36, λ=2.37, λ=2.38, and λ=2.39, etc., which will not be listed here one by one.

[0090] According to some embodiments of the present invention, such as Figure 1 and Figure 4 As shown, the bypass structure 300 includes a bypass hole 310 and a channel 320. The bypass hole 310 is located on the stationary plate 210. The bypass hole 310 connects the channel 320 and the compression chamber 230. The channel 320 also connects to the intake chamber 110. The valve body 380 is connected to the channel 320.

[0091] Specifically, the bypass structure 300 is refined. The bypass structure 300 includes a bypass hole 310 and a channel 320. The bypass hole 310 is located on the stationary plate 210 and is connected to the compression chamber 230. The channel 320 connects the bypass hole 310 and the intake chamber 110. The valve body 380 is connected to the channel 320.

[0092] When the bypass structure 300 is opened in the valve body 380, some refrigerant leaks from the bypass hole 310 to the channel 320 during the meshing compression process of the stationary disc 210 and the moving disc 220, and then leaks into the intake chamber 110 through the channel 320.

[0093] The valve body 380 is connected to the channel 320, and the opening and closing of the channel 320 can be controlled by the valve body 380 to achieve the purpose of opening and closing the bypass structure 300.

[0094] The bypass hole 310 is located on the stationary plate 210. The bypass hole 310 is close to the compression chamber 230. That is, the inlet of the bypass structure 300 is close to the refrigerant area that needs to be depressurized. It responds quickly and can release the refrigerant in the compression chamber 230 quickly and in a timely manner, thereby reducing the compression load.

[0095] For example, the bypass structure 300 is cross-sectioned along the flow direction of the refrigerant in the bypass structure 300, and the area enclosed by the inner contour line of the bypass structure 300 in the cross-section is the flow cross-sectional area of ​​the bypass structure 300.

[0096] For example, the flow rate of the valve body 380 is adjustable, and the refrigerant leakage of the bypass structure 300 can be adjusted through the valve body 380. That is, the refrigerant leakage of the bypass structure 300 can be adjusted according to different operating conditions of the compressor 10.

[0097] According to some embodiments of the present invention, such as Figure 5 As shown, the bypass structure 300 also includes a bypass cavity 330, one end of the bypass hole 310 extends into the compression cavity 230, and the other end of the bypass hole 310 extends into the bypass cavity 330 along the height direction of the compressor 10. The bypass cavity 330 is connected to the channel 320.

[0098] Specifically, the bypass structure 300 also includes a bypass cavity 330. One end of the bypass hole 310 extends into the compression cavity 230, and the other end of the bypass hole 310 extends into the bypass cavity 330 along the height direction of the compressor 10. The bypass cavity 330 connects to the channel 320, that is, the bypass hole 310 and the channel 320 are connected through the bypass cavity 330. When the valve body 380 opens the bypass structure 300, some refrigerant leaks from the bypass hole 310 into the bypass cavity 330 during the meshing compression process of the stationary disc 210 and the moving disc 220, and then leaks through the bypass cavity 330 into the channel 320, and then through the channel 320 into the intake cavity 110.

[0099] It is understandable that the flow cross-sectional area of ​​the bypass cavity 330 is larger than that of the bypass hole 310. That is, the refrigerant flows from the bypass hole 310 with a smaller flow cross-sectional area to the bypass cavity 330 with a larger flow cross-sectional area. The bypass cavity 330 with a larger flow cross-sectional area can provide a buffer space for the refrigerant. When the refrigerant flows into the bypass cavity 330 at high speed from the bypass hole 310, the expansion of the cavity volume will reduce the flow rate of the refrigerant, which can alleviate pressure fluctuations. The refrigerant will diffuse to the surrounding low-pressure areas, so that the pressure gradually equalizes, avoiding turbulence or eddies caused by sudden changes in cross-section. This can reduce local flow resistance and energy loss, reduce flow noise and vibration, and improve the operating noise of the compressor 10.

[0100] In some other embodiments, channel 320 is directly connected to bypass hole 310.

[0101] According to some embodiments of the present invention, such as Figure 2 As shown, the stationary plate 210 has a groove 212 on the side opposite to the moving plate 220; the pressure plate 400 of the compressor 10 is located in the groove 212, and a bypass cavity 330 is formed between the pressure plate 400 and the groove wall of the groove 212.

[0102] Specifically, the stationary plate 210 has a groove 212 on the side opposite to the moving plate 220. The groove 212 serves to accommodate the pressure plate 400 of the compressor 10. The pressure plate 400 is disposed within the groove 212, and a bypass cavity 330 is enclosed between the pressure plate 400 and the groove wall of the groove 212. That is, the bypass cavity 330 is defined as being formed by the pressure plate 400 and the stationary plate 210. The side of the pressure plate 400 opposite to the stationary plate 210 and the float structure of the compressor 10 enclose a back pressure cavity, which can communicate with the compression cavity 230.

[0103] Therefore, this application makes reasonable use of the existing pressure plate structure of the compressor 10, which can ensure the effectiveness and reliability of forming the bypass cavity 330, while avoiding the additional material input for forming the bypass cavity 330, thus helping to reduce the modification cost of the compressor 10.

[0104] In some other embodiments, there are multiple bypass holes 310, which are arranged at intervals.

[0105] Specifically, there are multiple bypass holes 310, which are arranged at intervals, and any one of the bypass holes 310 is connected to the bypass cavity 330. The flow cross-sectional area of ​​a single bypass hole 310 is limited. By setting multiple bypass holes 310, the total flow area can be increased, thereby improving the overall flow capacity of the bypass structure 300.

[0106] If there is only one bypass orifice with a large cross-sectional area, the refrigerant flowing through it will have a high velocity, resulting in a relatively severe impact and easily causing local turbulence and fluctuations, which can lead to significant operating noise. However, by providing multiple bypass orifices 310 and arranging them at intervals, the refrigerant can flow to multiple bypass orifices 310 simultaneously from multiple locations. Compared to a single bypass orifice with a large cross-sectional area, the refrigerant velocity in each bypass orifice 310 is relatively lower, resulting in smoother flow, reduced local flow resistance, and consequently, reduced energy loss. Furthermore, it reduces the impact on the bypass orifices 310, which is beneficial for reducing operating noise.

[0107] In addition, the multiple bypass holes 310 are arranged at intervals, which allows the refrigerant to be discharged relatively evenly from multiple locations, rather than concentrated in one bypass hole 310. This reduces the formation of local high-pressure areas in the compression chamber 230, making the pressure distribution more uniform. It avoids the situation where the stress distribution is uneven due to excessive local pressure relief, which is beneficial to improving the stability and efficiency of the compression process.

[0108] According to some embodiments of the present invention, the bypass structure 300 is located on the periphery of the compression structure 200, a portion of the bypass structure 300 extends along the height direction of the compressor 10, and the length of the portion of the bypass structure 300 extending along the height direction of the compressor 10 is adjustable.

[0109] Specifically, the bypass structure is refined to 300.

[0110] The bypass structure 300 is located around the compression structure 200. A portion of the bypass structure 300 extends along the height direction of the compressor 10, and the length of the portion of the bypass structure 300 extending along the height direction of the compressor 10 is adjustable. That is, the length of the portion of the bypass structure 300 extending along the height direction of the compressor 10 can be increased or decreased.

[0111] The stationary disc 210 can move relative to the moving disc 220 in the axial direction. In this way, under liquid or harsh working conditions, the stationary disc 210 can be separated and depressurized or avoid obstacles in the axial direction of the moving disc 220, thereby protecting the stationary disc 210.

[0112] Therefore, this application makes the length of the portion of the bypass structure 300 extending along the height direction of the compressor 10 adjustable. Thus, when the stationary disc 210 moves axially relative to the moving disc 220, the length of the portion of the bypass structure 300 extending along the height direction of the compressor 10 is adaptively adjusted. When the stationary disc 210 moves axially away from the moving disc 220, the length of the portion of the bypass structure 300 extending along the height direction of the compressor 10 increases. When the stationary disc 210 moves axially towards the moving disc 220, the length of the portion of the bypass structure 300 extending along the height direction of the compressor 10 decreases. This ensures the effectiveness and feasibility of the bypass structure 300 connecting the compression chamber 230 and the intake chamber 110, while also preventing obstruction of the stationary disc 210's movement under liquid conditions or harsh operating conditions, thus meeting the requirements for protecting the stationary disc 210.

[0113] For example, the height direction of the compressor 10 is axial.

[0114] In addition, the length of the portion of the bypass structure 300 extending along the height direction of the compressor 10 is adjustable. The bypass structure 300 can be flexibly adjusted in size according to the actual internal space of the compressor 10, so that the bypass structure 300 can be used with different models of compressor 10, thereby improving the adaptability of the product.

[0115] According to some embodiments of the present invention, such as Figure 2 and Figure 3 As shown, the bypass structure 300 further includes: a transfer pipe 340, disposed in the intake chamber 110, the transfer pipe 340 being connected to the stationary plate 210, the transfer pipe 340 communicating with the bypass hole 310, and the inner surface of the transfer pipe 340 enclosing a first part of the channel 320; a valve seat 350, at least a part of the valve seat 350 being located within the intake chamber 110, the valve seat 350 and the transfer pipe 340 being spaced apart along the height direction of the compressor 10, the valve seat 350 communicating with the intake chamber 110, the inner surface of the valve seat 350 forming a second part of the channel 320, and a valve body 380 disposed on the valve seat 350; a connecting pipe 360, disposed in the intake chamber 110, the connecting pipe 360 ​​being connected between the transfer pipe 340 and the valve seat 350, the inner surface of the connecting pipe 360 ​​enclosing a third part of the channel 320, and the length of the portion of the connecting pipe 360 ​​located between the transfer pipe 340 and the valve seat 350 being adjustable.

[0116] Specifically, the bypass structure 300 also includes a transfer pipe 340, a valve seat 350, and a connecting pipe 360.

[0117] The adapter pipe 340 is located in the air intake chamber 110, at least a portion of the valve seat 350 is located in the air intake chamber 110, and the connecting pipe 360 ​​is located in the air intake chamber 110.

[0118] Along the height direction of the compressor 10, the valve seat 350 and the transfer pipe 340 are arranged at intervals, the connecting pipe 360 ​​is located on the periphery of the compression structure 200, and the connecting pipe 360 ​​is connected between the transfer pipe 340 and the valve seat 350.

[0119] The inner surface of the adapter pipe 340 encloses the first part of the channel 320, the inner surface of the valve seat 350 forms the second part of the channel 320, and the inner surface of the connecting pipe 360 ​​encloses the third part of the channel 320. That is, the adapter pipe 340, valve seat 350, and connecting pipe 360 ​​enclose the channel 320. The adapter pipe 340 connects to the bypass hole 310, and the valve seat 350 connects to the intake chamber 110, thus meeting the usage requirements of the bypass structure 300 connecting the compression chamber 230 and the intake chamber 110.

[0120] The length of the connecting pipe 360 ​​located between the adapter pipe 340 and the valve seat 350 is adjustable. When the stationary disc 210 moves axially away from the moving disc 220, the length of the connecting pipe 360 ​​between the adapter pipe 340 and the valve seat 350 increases. When the stationary disc 210 moves axially towards the moving disc 220, the length of the connecting pipe 360 ​​between the adapter pipe 340 and the valve seat 350 decreases. Thus, under liquid conditions or harsh operating conditions, the bypass structure 300 will not obstruct the movement of the stationary disc 210, meeting the requirements for protecting the stationary disc 210.

[0121] It is understandable that the valve body 380 is located on the valve seat 350. The valve seat 350 serves as the mounting carrier for the valve body 380, and has the function of installing and fixing the valve body 380. It can ensure the matching dimensions between the valve body 380 and the channel 320, and provide structural support for the valve body 380 to effectively open and close the channel 320.

[0122] According to some embodiments of the present invention, such as Figure 2 and Figure 3 As shown, the first part 362 of the connecting pipe is slidably connected to the adapter pipe 340, and a first sealing ring 372 is provided at the connection between the first part 362 of the connecting pipe and the adapter pipe 340. The first part 362 of the connecting pipe is slidably connected to the adapter pipe 340 through the first sealing ring 372; and / or the second part 364 of the connecting pipe is slidably connected to the valve seat 350, and a second sealing ring 374 is provided at the connection between the second part 364 of the connecting pipe and the valve seat 350. The second part 364 of the connecting pipe is slidably connected to the valve seat 350 through the second sealing ring 374.

[0123] Specifically, the first portion 362 of the connecting pipe is slidably connected to the adapter pipe 340. Alternatively, the second portion 364 of the connecting pipe is slidably connected to the valve seat 350. Or, the first portion 362 of the connecting pipe is slidably connected to the adapter pipe 340, and the second portion 364 of the connecting pipe is slidably connected to the valve seat 350. For example, the first portion 362 of the connecting pipe is located within the adapter pipe 340. For example, the second portion 364 of the connecting pipe is located within the valve seat 350.

[0124] With the first portion 362 of the connecting pipe located within the adapter 340, and the first portion 362 of the connecting pipe slidably connected to the adapter 340, and the connecting pipe 360 ​​fixedly connected to the valve seat 350, when the stationary disc 210 moves axially away from the moving disc 220, the length of the portion of the connecting pipe 360 ​​located within the adapter 340 decreases, and the length of the portion of the connecting pipe 360 ​​located between the adapter 340 and the valve seat 350 increases. Conversely, when the stationary disc 210 moves axially towards the moving disc 220, the length of the portion of the connecting pipe 360 ​​located within the adapter 340 increases, and the length of the portion of the connecting pipe 360 ​​located between the adapter 340 and the valve seat 350 decreases. This satisfies the requirement for adjustable length of the portion of the connecting pipe 360 ​​located between the adapter 340 and the valve seat 350.

[0125] With the second part 364 of the connecting pipe located inside the valve seat 350, and the second part 364 of the connecting pipe slidably connected to the valve seat 350, and the connecting pipe 360 ​​fixedly connected to the adapter pipe 340, when the stationary disc 210 moves axially away from the moving disc 220, the length of the portion of the connecting pipe 360 ​​inside the valve seat 350 decreases, and the length of the portion of the connecting pipe 360 ​​between the adapter pipe 340 and the valve seat 350 increases. When the stationary disc 210 moves axially towards the moving disc 220, the length of the portion of the connecting pipe 360 ​​inside the valve seat 350 increases, and the length of the portion of the connecting pipe 360 ​​between the adapter pipe 340 and the valve seat 350 decreases. This satisfies the requirement for adjustable length of the portion of the connecting pipe 360 ​​between the adapter pipe 340 and the valve seat 350.

[0126] With the first portion 362 of the connecting pipe located within the adapter 340 and slidably connected to it, and the second portion 364 of the connecting pipe located within the valve seat 350 and slidably connected to it, when the stationary disc 210 moves axially away from the moving disc 220, the length of the portion of the connecting pipe 360 ​​located within the adapter 340 decreases and / or the length of the portion of the connecting pipe 360 ​​located within the valve seat 350 decreases, while the length of the portion of the connecting pipe 360 ​​located between the adapter 340 and the valve seat 350 increases. Conversely, when the stationary disc 210 moves axially towards the moving disc 220, the length of the portion of the connecting pipe 360 ​​located within the adapter 340 increases and / or the length of the portion of the connecting pipe 360 ​​located within the valve seat 350 increases, while the length of the portion of the connecting pipe 360 ​​located between the adapter 340 and the valve seat 350 decreases. This satisfies the requirement for adjustable length of the portion of the connecting pipe 360 ​​located between the adapter 340 and the valve seat 350.

[0127] Specifically, when the first part 362 of the connecting pipe is slidably connected to the adapter pipe 340, the bypass structure 300 further includes a first sealing ring 372, which is located at the connection between the first part 362 of the connecting pipe and the adapter pipe 340. For example, the first sealing ring 372 is fitted onto the outer peripheral wall of the first part 362 of the connecting pipe, and the connecting pipe 360 ​​is slidably connected to the adapter pipe 340 through the first sealing ring 372. Alternatively, the first sealing ring 372 is fitted onto the inner surface of the adapter pipe 340, and the connecting pipe 360 ​​is slidably connected to the adapter pipe 340 through the first sealing ring 372. This not only satisfies the requirement for the first part 362 of the connecting pipe to be slidably connected to the adapter pipe 340, but the first sealing ring 372 also seals the connection between the connecting pipe 360 ​​and the adapter pipe 340, preventing refrigerant leakage through the connection and providing structural support for ensuring the refrigerant flow path.

[0128] When the second part 364 of the connecting pipe is slidably connected to the valve seat 350, the bypass structure 300 also includes a second sealing ring 374, which is located at the connection between the second part 364 of the connecting pipe and the valve seat 350. For example, the second sealing ring 374 is fitted onto the outer peripheral wall of the second part 364 of the connecting pipe, and the connecting pipe 360 ​​is slidably connected to the valve seat 350 through the second sealing ring 374. Alternatively, the second sealing ring 374 is fitted onto the inner surface of the valve seat 350, and the connecting pipe 360 ​​is slidably connected to the valve seat 350 through the second sealing ring 374. This not only meets the requirement of a slidable connection between the second part 364 of the connecting pipe and the valve seat 350, but the second sealing ring 374 also seals the connection between the connecting pipe 360 ​​and the valve seat 350, preventing refrigerant leakage through this connection and providing structural support for ensuring the refrigerant flow path.

[0129] According to some embodiments of the present invention, when the first part 362 of the connecting pipe is slidably connected to the adapter pipe 340, the adapter pipe 340 is provided with a first boss 342, which is used to limit the maximum depth to which the first part 362 of the connecting pipe extends into the adapter pipe 340; when the second part 364 of the connecting pipe is slidably connected to the valve seat 350, the valve seat 350 is provided with a second boss 352, which is used to limit the maximum depth to which the second part 364 of the connecting pipe extends into the valve seat 350.

[0130] Specifically, when the first part 362 of the connecting pipe is slidably connected to the adapter pipe 340, the adapter pipe 340 is provided with a first boss 342. The first boss 342 is used to limit the maximum depth of the first part 362 of the connecting pipe into the adapter pipe 340. In other words, the first boss 342 limits the maximum length of the first part 362 of the connecting pipe within the adapter pipe 340, providing structural support for ensuring the fit dimensions of the connecting pipe 360, the adapter pipe 340, and the valve seat 350.

[0131] When the second part 364 of the connecting pipe is slidably connected to the valve seat 350, the valve seat 350 is provided with a second boss 352. The second boss 352 is used to limit the maximum depth of the second part 364 of the connecting pipe into the valve seat 350. In other words, the second boss 352 limits the maximum length of the second part 364 of the connecting pipe within the valve seat 350, providing structural support for ensuring the mating dimensions of the connecting pipe 360, the adapter pipe 340 and the valve seat 350.

[0132] For example, the transfer pipe 340 is integrally formed with a first boss 342.

[0133] For example, the first boss 342 is an annular structure, or the first boss 342 is an arc-shaped structure, or there are multiple first bosses 342, which are arranged at intervals along the circumference of the connecting pipe 360.

[0134] For example, the valve seat 350 is integrally formed with a second boss 352.

[0135] For example, the second protrusion 352 is an annular structure, or the second protrusion 352 is an arc-shaped structure, or there are multiple second protrusions 352, which are arranged at intervals along the circumference of the connecting pipe 360.

[0136] It is understandable that the maximum distance between the valve seat 350 and the adapter pipe 340 in the height direction of the compressor 10 is less than the length of the connecting pipe 360. In this way, even if the adapter pipe 340 moves relative to the valve seat 350, the connecting pipe 360 ​​will not detach from the valve seat 350 and the adapter pipe 340.

[0137] In some other embodiments, the adapter pipe 340 is provided with a first limiting protrusion located between the first boss 342 and the valve seat 350. The first limiting protrusion is used to limit the maximum length of the first part 362 of the connecting pipe extending out of the adapter pipe 340.

[0138] In some other embodiments, the valve seat 350 is provided with a second limiting protrusion located between the second protrusion 352 and the adapter pipe 340. The second limiting protrusion is used to limit the maximum length of the second part 364 of the connecting pipe extending out of the valve seat 350.

[0139] According to some embodiments of the present invention, the connecting pipe 360 ​​is a telescopic pipe, and the adapter pipe 340 and the valve seat 350 are both fixedly connected to the connecting pipe 360.

[0140] Specifically, the connecting pipe 360 ​​is a telescopic pipe with an adjustable length. One end of the connecting pipe 360 ​​is fixedly connected to the adapter pipe 340, and the other end of the connecting pipe 360 ​​is fixedly connected to the valve seat 350.

[0141] When the stationary disc 210 moves axially away from the moving disc 220, the distance between the adapter pipe 340 and the valve seat 350 increases, and the telescopic pipe extends accordingly. When the stationary disc 210 moves axially towards the moving disc 220, the distance between the adapter pipe 340 and the valve seat 350 decreases, and the telescopic pipe shortens accordingly. This satisfies the requirement for adjustable length of the portion of the connecting pipe 360 ​​located between the adapter pipe 340 and the valve seat 350.

[0142] Exemplary examples include flexible metal hoses, corrugated hoses, fiber-reinforced hoses, etc., which will not be listed here.

[0143] According to some embodiments of the present invention, when a portion of the valve seat 350 is located within the air intake chamber 110, another portion of the valve seat 350 extends out of the outer surface of the housing 100.

[0144] Specifically, the mating structure between the valve seat 350 and the housing 100 is refined.

[0145] With a portion of the valve seat 350 located within the intake chamber 110, the other portion of the valve seat 350 extends beyond the outer surface of the housing 100. That is, the other portion of the valve seat 350 is located outside the housing 100. This reduces the space occupied by the valve seat 350 within the housing 100, optimizes the compact layout of the internal components of the compressor 10, and facilitates the miniaturization and integration of the entire unit. Simultaneously, the operator can observe the operating status of the valve seat 350 and the valve body 380 from the outside of the housing 100, facilitating the installation, commissioning, and maintenance of the valve body 380.

[0146] In addition, the valve body 380 is located on the valve seat 350. The valve body 380 is closer to the intake chamber 110 and the external environment. The valve body 380 is also closer to the channel 320 of the bypass structure 300. The connection path between the valve body 380 and the channel 320 is shorter and more direct, which can reduce the delay in the transmission of control signals and improve control sensitivity.

[0147] According to some embodiments of the present invention, the valve seat 350 surrounds the valve body 380, and the valve body 380 and the valve seat 350 are detachably connected.

[0148] Specifically, the mating structure of valve seat 350 and valve body 380 is refined.

[0149] The valve seat 350 surrounds the valve body 380, and the valve body 380 and valve seat 350 are detachably connected. The connection method between the valve body 380 and valve seat 350 includes any one or a combination of the following: snap-fit, screw connection, magnetic attraction, and fastening connection by fasteners (such as screws, bolts, or rivets). The disassembly of the valve body 380 and valve seat 350 and the installation position of the valve body 380 relative to the valve seat 350 can be determined according to the actual situation, thus adapting to the usage requirements of different models of compressor 10. The product has strong adaptability, facilitates the maintenance, replacement, cleaning, and adjustment of the valve body 380, and helps to improve the disassembly and assembly efficiency of the valve body 380, thereby improving the performance of the product.

[0150] In addition, with a portion of the valve seat 350 located within the intake chamber 110, the other portion of the valve seat 350 extends beyond the outer surface of the housing 100. The valve seat 350 surrounds the valve body 380. This allows the valve body 380 to be installed separately, facilitating the inspection of whether the connection between the valve body 380 and the valve seat 350 is in place, the inspection of whether the seal is good, and the inspection of the working status of the valve body 380.

[0151] A refrigeration device according to some embodiments of the present invention includes: the compressor 10 in any of the above embodiments.

[0152] The refrigeration equipment provided in this application includes the compressor 10 as described in any of the above embodiments, and therefore has all the beneficial effects of the compressor 10, which will not be described in detail here.

[0153] For example, refrigeration equipment includes air conditioners, refrigerators, or freezers.

[0154] Exemplarily, the compressor 10 includes a housing 100, a compression structure 200, a bypass structure 300, and a valve body 380. The compression structure 200 includes a stationary disc 210 and a moving disc 220. The bypass structure 300 is connected to the side of the stationary disc 210 and extends directly to the low-pressure chamber (i.e., the intake chamber 110). The bypass structure 300 is selectively opened and closed by the valve body 380, which includes a solenoid valve. When the valve body 380 opens the bypass structure 300, the compressor 10 operates at half load. When the valve body 380 closes the bypass structure 300, the compressor 10 operates at full load.

[0155] For example, this application achieves the desired result by reasonably setting the relationship between A, λ, Vs, n, ρ, and Ps. λ is a real number, and 2.1≤λ≤2.4.

[0156] In this way, the bypass structure 300 of the compressor 10 is guaranteed not to generate excessive pressure loss, so that when the compressor 10 is running under partial load, part of the refrigerant in the compression chamber 230 can be discharged in time through the bypass structure 300, and the flow rate of the compressor 10 under partial load (e.g., half load) can be controlled within the design range.

[0157] For example, the upper limit of the minimum flow cross-sectional area A of the bypass structure 300 is set according to the internal space of the compressor 10 to ensure that the bypass structure 300 will not interfere with other components of the compressor 10 and will not affect the normal operation of the compressor 10.

[0158] For example, the connecting pipe 340 of the bypass structure 300 is a bend.

[0159] For example, when the bypass structure 300 is in the open state, some refrigerant leaks from the bypass hole 310 into the bypass cavity 330 during the engagement and compression process of the stationary disc 210 and the moving disc 220.

[0160] For example, the bypass cavity 330 is connected to the channel 320 of the bypass structure 300, and the refrigerant leaking into the bypass cavity 330 eventually flows back to the low-pressure cavity (i.e., the intake cavity 110) through the channel 320, thus achieving the function of partial load.

[0161] Exemplarily, the compressor 10 of this application includes a variable-capacity scroll compressor, which can change its compression volume according to the needs of the refrigeration equipment. Exemplarily, the valve body 380 is a solenoid valve for adjusting the compression volume. Exemplarily, the housing 100 is a sheet metal part for separating the enclosed compressor cavity from the external environment. Exemplarily, Figure 2 The dashed arrows in the diagram indicate the flow path of the refrigerant from the bypass structure 300 to the intake chamber 110.

[0162] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0163] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A compressor, characterized in that, include: A housing, wherein an air intake chamber is provided inside the housing; A compression structure is provided in the air intake chamber. The compression structure includes a stationary disc and a moving disc, and a compression chamber is formed between the stationary disc and the moving disc. The compression chamber is connected to the air intake chamber. A bypass structure, at least a portion of which is disposed in the intake chamber, the bypass structure connecting the compression chamber and the intake chamber; Valve body, the valve body being used to open and close the bypass structure; The minimum cross-sectional area of ​​the bypass structure is denoted as A(m²). 2 The full-load suction volume of the compressor is denoted as Vs (m³). 3 The compressor speed is denoted as n (s). -1 The refrigerant density at the compressor's suction port is denoted as ρ (kg / m³). 3 The minimum suction pressure of the compressor is denoted as Ps (N / m). 2 ); in, λ is a real number, and 2.1≤λ≤2.

4.

2. The compressor according to claim 1, characterized in that, The bypass structure includes a bypass hole and a channel. The bypass hole is located on the stationary plate. The bypass hole connects the channel and the compression chamber. The channel also connects to the intake chamber. The valve body is connected to the channel.

3. The compressor according to claim 2, characterized in that, The bypass structure further includes a bypass cavity, one end of the bypass hole extends into the compression cavity, and the other end of the bypass hole extends into the bypass cavity along the height direction of the compressor, with the bypass cavity connecting to the channel.

4. The compressor according to claim 3, characterized in that, The stationary disk has a groove on the side opposite to the moving disk; The compressor's pressure plate is located within the groove, and the bypass cavity is formed between the pressure plate and the groove wall.

5. The compressor according to claim 3, characterized in that, The number of bypass holes is multiple, and the multiple bypass holes are arranged at intervals.

6. The compressor according to any one of claims 2 to 4, characterized in that, The bypass structure is located around the periphery of the compression structure, a portion of the bypass structure extends along the height direction of the compressor, and the length of the portion of the bypass structure extending along the height direction of the compressor is adjustable.

7. The compressor according to claim 6, characterized in that, The bypass structure also includes: An adapter pipe is provided in the air intake chamber, the adapter pipe is connected to the stationary plate, the adapter pipe communicates with the bypass hole, and the inner surface of the adapter pipe encloses the first part of the channel; A valve seat, at least a portion of which is located within the intake chamber along the height direction of the compressor, is spaced apart from the transfer pipe, communicates with the intake chamber, and the inner surface of the valve seat forms a second portion of the channel; the valve body is disposed on the valve seat. A connecting pipe is provided in the air intake chamber. The connecting pipe connects between the adapter pipe and the valve seat. The inner surface of the connecting pipe encloses the third part of the channel. The length of the part of the connecting pipe located between the adapter pipe and the valve seat is adjustable.

8. The compressor according to claim 7, characterized in that, The first part of the connecting pipe is slidably connected to the adapter pipe, and a first sealing ring is provided at the connection between the first part of the connecting pipe and the adapter pipe. The first part of the connecting pipe is slidably connected to the adapter pipe through the first sealing ring; and / or The second part of the connecting pipe is slidably connected to the valve seat, and a second sealing ring is provided at the connection between the second part of the connecting pipe and the valve seat. The second part of the connecting pipe is slidably connected to the valve seat through the second sealing ring.

9. The compressor according to claim 8, characterized in that, When the first part of the connecting tube is slidably connected to the adapter tube, the adapter tube is provided with a first protrusion, which is used to limit the maximum depth to which the first part of the connecting tube extends into the adapter tube; When the second part of the connecting pipe is slidably connected to the valve seat, the valve seat is provided with a second boss, which is used to limit the maximum depth to which the second part of the connecting pipe extends into the valve seat.

10. The compressor according to claim 7, characterized in that, The connecting pipe is a telescopic pipe, and the adapter pipe and the valve seat are both fixedly connected to the connecting pipe.

11. The compressor according to claim 7, characterized in that, With one part of the valve seat located within the air intake chamber, another part of the valve seat extends beyond the outer surface of the housing.

12. The compressor according to claim 11, characterized in that, The valve seat surrounds the valve body, and the valve body and the valve seat are detachably connected.

13. A refrigeration device, characterized in that, Includes the compressor as described in any one of claims 1 to 12.

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