Compressor and refrigeration apparatus

Abstract

The application discloses a compressor and a refrigeration device, and relates to the technical field of compressors, wherein the compressor comprises a shell, a motor, a crankshaft, a crankcase and an exhaust pipe; the crankcase comprises a compression cylinder, a first high-pressure cavity and a second high-pressure cavity which are arranged in communication with each other, a first inner exhaust pipe and a second inner exhaust pipe; the first high-pressure cavity is in communication with an exhaust port of the compression cylinder; the first end of the first inner exhaust pipe is arranged in communication with the first high-pressure cavity; and the first end of the second inner exhaust pipe is arranged in communication with the second high-pressure cavity; the exhaust pipe is in communication with the second ends of the first inner exhaust pipe and the second inner exhaust pipe; by additionally arranging the second inner exhaust pipe between the first high-pressure cavity and the exhaust pipe, the high-pressure gas discharged from the exhaust port of the compression cylinder can be partially converged to the exhaust pipe through the second inner exhaust pipe, the total exhaust cross-sectional area is increased, the flow resistance is relatively small, the pressure drop and the energy loss are also relatively small, the gas discharge channel is increased, and the refrigeration capacity of the compressor is indirectly improved.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and in particular to a compressor and refrigeration equipment. Background Technology

[0002] As the heart of the refrigeration system, the refrigerator compressor's efficiency and operational vibration and noise levels are crucial to the user experience. Compressor design typically employs a combination of a high-pressure chamber and a single-path internal discharge pipe for exhaust. The high-pressure chamber, also known as the exhaust buffer, primarily regulates gas flow pressure, acting as a throttling mechanism; while the internal discharge pipe is used to expel high-pressure gas. These two design elements jointly influence the compressor's performance and stability.

[0003] Specifically, a strong throttling effect can effectively reduce pulsation in gas flow, thereby reducing the noise generated during compressor operation. However, this process also introduces greater flow resistance, leading to additional energy loss, known as throttling loss. This loss directly affects the compressor's refrigeration efficiency and may cause a decrease in cooling capacity. Therefore, a balance needs to be found in the compressor design process to ensure good noise control without compromising its refrigeration efficiency. Summary of the Invention

[0004] The main objective of this invention is to provide a compressor and refrigeration equipment that can reduce throttling losses, increase refrigeration capacity, and thus improve compressor energy efficiency.

[0005] To achieve the above objectives, the compressor proposed in this invention includes:

[0006] case;

[0007] An electric motor is disposed within the housing, and the electric motor has an output shaft;

[0008] A crankshaft connected to the output shaft for being driven to rotate by the motor;

[0009] A crankcase, disposed within the housing, the crankcase comprising:

[0010] A compression cylinder includes a working chamber and a piston movably mounted in the working chamber. The piston is connected to the crankshaft via a connecting rod to drive the piston when the crankshaft moves. The compression cylinder has an air inlet and an air outlet.

[0011] A first high-pressure chamber and a second high-pressure chamber, wherein the first high-pressure chamber is connected to the exhaust port of the compression cylinder, and the first high-pressure chamber and the second high-pressure chamber are interconnected; and,

[0012] A first inner drain pipe and a second inner drain pipe, wherein a first end of the first inner drain pipe is connected to the first high-pressure cavity, and a first end of the second inner drain pipe is connected to the second high-pressure cavity; and...

[0013] An exhaust pipe, wherein the exhaust pipe is connected to the second end of the first inner exhaust pipe and the second inner exhaust pipe.

[0014] In one embodiment, the inner diameter of the first inner pipe is set to be smaller than the inner diameter of the second inner pipe.

[0015] In one embodiment, the compressor further includes a manifold having three ports, two of which are connected to the second ends of the first inner exhaust pipe and the second inner exhaust pipe, respectively, and the other port is connected to the exhaust pipe.

[0016] In one embodiment, the manifold is bonded or heat-fused to the second ends of the first inner drain pipe and the second inner drain pipe; and / or,

[0017] The manifold is bonded to the exhaust pipe or heat-fused together.

[0018] In one embodiment, the manifold is configured as a plastic pipe.

[0019] In one embodiment, the exhaust pipe includes two connecting sections and a confluence section. One end of each of the two connecting sections is connected to the confluence section, and the other end is connected to the second end of the first inner exhaust pipe and the second inner exhaust pipe, respectively.

[0020] In one embodiment, the first inner drain pipe and / or the second inner drain pipe are configured as plastic pipes.

[0021] In one embodiment, both the first high-pressure chamber and the second high-pressure chamber are provided with openings;

[0022] The compressor also includes two covers, which are respectively placed over the openings of the first high-pressure chamber and the second high-pressure chamber;

[0023] The first inner pipe and the second inner pipe are respectively bonded or heat-fused to the corresponding cover body.

[0024] The present invention also provides a refrigeration device, the refrigeration device including a compressor, the compressor comprising:

[0025] case;

[0026] An electric motor is disposed within the housing, and the electric motor has an output shaft;

[0027] A crankshaft connected to the output shaft for being driven to rotate by the motor;

[0028] A crankcase, disposed within the housing, the crankcase comprising:

[0029] A compression cylinder includes a working chamber and a piston movably mounted in the working chamber. The piston is connected to the crankshaft via a connecting rod to drive the piston when the crankshaft moves. The compression cylinder has an air inlet and an air outlet.

[0030] A first high-pressure chamber and a second high-pressure chamber, wherein the first high-pressure chamber is connected to the exhaust port of the compression cylinder, and the first high-pressure chamber and the second high-pressure chamber are interconnected; and,

[0031] A first inner drain pipe and a second inner drain pipe, wherein a first end of the first inner drain pipe is connected to the first high-pressure cavity, and a first end of the second inner drain pipe is connected to the second high-pressure cavity; and...

[0032] An exhaust pipe, wherein the exhaust pipe is connected to the second end of the first inner exhaust pipe and the second inner exhaust pipe.

[0033] In one embodiment, the refrigeration equipment includes a refrigerator.

[0034] In the technical solution of this invention, the exhaust port of the compression cylinder is connected to the first high-pressure chamber. The high-pressure gas from the first high-pressure chamber can flow to the second high-pressure chamber, which is connected to the first high-pressure chamber, and then flow to the exhaust pipe through the first inner discharge pipe. By adding the second inner discharge pipe between the first high-pressure chamber and the exhaust pipe, part of the high-pressure gas discharged from the exhaust port of the compression cylinder to the first high-pressure chamber can be merged into the exhaust pipe through the second inner discharge pipe, increasing the total exhaust cross-sectional area. The flow resistance when the fluid passes through is small, the pressure drop and energy loss are also small, and the gas discharge channel is increased, so that more gas can be discharged from the high-pressure chamber in a shorter time, thereby indirectly improving the cooling capacity of the compressor. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0036] Figure 1 A schematic diagram of the first embodiment of the compressor provided by the present invention;

[0037] Figure 2 for Figure 1Top view of the compressor;

[0038] Figure 3 for Figure 1 A schematic diagram of the structure of the first inner pipe, the second inner pipe, and the exhaust pipe;

[0039] Figure 4 This is a schematic diagram of the second embodiment of the compressor provided by the present invention;

[0040] Figure 5 This is a first-moment streamline diagram of a certain model in mass production using existing technology;

[0041] Figure 6 This is a second-timeline diagram of a certain model in mass production using existing technology;

[0042] Figure 7 A first-moment streamline diagram of the compressor according to the first embodiment of the present invention;

[0043] Figure 8 A second-time-phase streamline diagram of the compressor first embodiment provided by the present invention;

[0044] Figure 9 A first-moment streamline diagram of the second embodiment of the compressor provided by the present invention;

[0045] Figure 10 The second-time-phase streamline diagram of the compressor provided by the present invention.

[0046] Explanation of icon numbers:

[0047] 100. Compressor; 10. Crankcase; 1. First high-pressure chamber; 2. Second high-pressure chamber; 3. First inner manifold; 4. Second inner manifold; 5. Exhaust pipe; 51. Connecting section; 52. Manifold section; 6. Manifold pipe; 61. Interface; 7. Cover; 8. Compression cylinder.

[0048] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0050] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0051] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0052] In compressor design, a combination of a high-pressure chamber and a single-path internal discharge pipe is typically used for exhaust. The high-pressure chamber, also known as the exhaust buffer, is primarily responsible for regulating the pressure of the gas flow, acting as a throttling mechanism; while the internal discharge pipe is used to expel the high-pressure gas. These two design elements jointly affect the compressor's performance and stability. Specifically, a strong throttling effect can effectively reduce pulsation in gas flow, thereby reducing the noise generated during compressor operation. However, this process also introduces significant flow resistance, leading to additional energy loss, known as throttling loss. This loss directly affects the compressor's refrigeration efficiency and may cause a decrease in cooling capacity. Therefore, a balance needs to be found in the compressor design process to ensure good noise control without compromising its refrigeration efficiency.

[0053] This invention proposes a compressor that aims to reduce throttling losses, increase cooling capacity, and thus improve compressor energy efficiency.

[0054] Please see Figures 1 to 3In one embodiment of the present invention, the compressor 100 includes a housing, a motor, a crankshaft, a crankcase 10, and an exhaust pipe 5. The motor is disposed within the housing and has an output shaft. The crankshaft is connected to the output shaft and is driven to rotate by the motor. The crankcase 10 is disposed within the housing and includes a compression cylinder 8, a first inner exhaust pipe 3, and a second inner exhaust pipe 4. The compression cylinder 8 includes a working chamber and a piston movably mounted in the working chamber. The piston is connected to the crankshaft via a connecting rod to drive the crankshaft. The piston is driven to move during operation. The compression cylinder 8 has an air inlet and an exhaust outlet. The crankcase 10 includes a first high-pressure chamber 1 and a second high-pressure chamber 2. The first high-pressure chamber 1 is connected to the exhaust outlet of the compression cylinder 8, and the first high-pressure chamber 1 and the second high-pressure chamber 2 are interconnected. The first end of the first inner exhaust pipe 3 is connected to the first high-pressure chamber 1, and the first end of the second inner exhaust pipe 4 is connected to the second high-pressure chamber 2. The exhaust pipe 5 is connected to the second ends of the first inner exhaust pipe 3 and the second inner exhaust pipe 4.

[0055] It should be noted that the housing is the external protective cover of the compressor. It not only provides mechanical support but also serves as a seal to prevent external impurities from entering the compressor and to maintain internal pressure.

[0056] The motor is the power source that drives the compressor. It generates kinetic energy through rotation, which in turn drives the crankshaft.

[0057] The crankshaft is a key component connecting the motor and the compression cylinder 8. It converts the rotational motion of the motor into the reciprocating linear motion of the piston, thereby compressing the refrigerant.

[0058] The crankshaft is typically designed with an eccentric wheel or connecting rod mechanism to ensure smooth and efficient motion conversion.

[0059] The compression cylinder 8 is where the refrigerant compression actually takes place. The refrigerant is drawn in, compressed, and then discharged.

[0060] It should be noted that the compressor 100 can be a single-cylinder compressor.

[0061] The crankcase is the space that houses the crankshaft and other related moving parts. It provides a controlled environment to support the rotational motion of the crankshaft and facilitates the operation of the lubrication system.

[0062] Understandably, the first high-pressure chamber 1 is directly connected to the exhaust port of the compression cylinder 8, receiving high-pressure gas from the compression cylinder 8. The second high-pressure chamber 2 is interconnected with the first high-pressure chamber 1, further processing the high-pressure gas flowing in from the first high-pressure chamber 1.

[0063] One end of the first inner exhaust pipe 3 is connected to the first high-pressure chamber 1, and the other end is connected to the exhaust pipe 5, providing an exhaust path for the high-pressure gas.

[0064] One end of the second inner exhaust pipe 4 is connected to the second high-pressure chamber 2, and the other end is also connected to the exhaust pipe 5, providing a second exhaust path for the high-pressure gas.

[0065] The exhaust pipe 5 ultimately discharges the high-pressure gas, which has been processed by the first inner exhaust pipe 3 and the second inner exhaust pipe 4, out of the compressor.

[0066] In the prior art, the exhaust port of the compression cylinder 8 flows from the first high-pressure chamber 1 to the second high-pressure chamber 2, and then flows through the second inner exhaust pipe 4 into the exhaust pipe 5, so the exhaust path is only a single line.

[0067] The dual-path design of the first inner exhaust pipe 3 and the second inner exhaust pipe 4 in this invention provides two exhaust paths for the high-pressure gas discharged from the compressor, reducing the flow resistance of a single path, reducing throttling losses, and also helping to improve the gas exhaust efficiency, allowing more gas to be discharged quickly and more gas to complete the cycle in a short time, thereby improving the cooling capacity of the compressor.

[0068] It should be noted that the lengths of the first inner pipe 3 and the second inner pipe 4 can be adjusted appropriately according to the compressor model, internal space layout, performance preferences, etc.

[0069] Understandably, setting up dual-path discharge, reducing flow resistance and uniform gas distribution can lower the noise level of the compressor during operation.

[0070] In the technical solution of the present invention, the exhaust port of the compression cylinder 8 is connected to the first high-pressure chamber 1. The high-pressure gas from the first high-pressure chamber 1 can flow to the second high-pressure chamber 2, which is connected to the first high-pressure chamber 1, and then flow to the exhaust pipe 5 through the first inner discharge pipe 3. By adding the second inner discharge pipe 4 between the first high-pressure chamber 1 and the exhaust pipe 5, the high-pressure gas discharged from the exhaust port of the compression cylinder 8 to the first high-pressure chamber 1 can be partially discharged to the exhaust pipe 5 through the second inner discharge pipe 4, which increases the total exhaust cross-sectional area. The flow resistance when the fluid passes through is small, the pressure drop and energy loss are also small, and the gas discharge channel is increased, so that more gas can be discharged from the high-pressure chamber in a shorter time, thereby indirectly improving the cooling capacity of the compressor.

[0071] Further, please refer to Figure 3 In this embodiment, the inner diameter of the first inner pipe 3 is set to be smaller than the inner diameter of the second inner pipe 4.

[0072] If the inner diameter of the first inner drain pipe 3 is set too large, the resistance to gas flow will decrease, which will increase the flow speed of gas between the first high-pressure chamber 1 and the first inner drain pipe 3, resulting in increased gas pulsation and thus increasing the vibration and noise of the compressor.

[0073] It is understandable that if the inner diameter of the first inner discharge pipe 3 is too large, it will lead to insufficient back pressure in the first high-pressure chamber 1. Back pressure is an important factor in maintaining stable flow of high-pressure gas; insufficient back pressure will cause unstable gas flow and affect the performance of the compressor. In this invention, because the inner diameter of the first inner discharge pipe 3 is small, the flow resistance of gas in the first inner discharge pipe 3 can be increased, thereby forming a certain back pressure in the first high-pressure chamber 1 to stabilize the flow of high-pressure gas, reduce gas pulsation, and reduce noise. Furthermore, the inner diameter of the second inner discharge pipe 4 is large, which can reduce the flow resistance of gas in the second inner discharge pipe 4, ensuring that high-pressure gas can be smoothly discharged from the second high-pressure chamber 2 and reducing throttling losses.

[0074] In some embodiments, please refer to Figures 1 to 3 The compressor 100 also includes a manifold 6, which has three ports 61, two of which are connected to the second ends of the first inner exhaust pipe 3 and the second inner exhaust pipe 4, respectively, and the other port 61 is connected to the exhaust pipe 5.

[0075] The position and orientation of the three interfaces 61 can be adjusted according to actual needs, which facilitates installation and maintenance, provides greater connection flexibility, and reduces installation time and cost.

[0076] The manifold 6 can be made of plastic, which is less expensive. There is no need to make a separate mold for the exhaust pipe 5. Standardized design can improve production efficiency and ensure the consistency of product quality.

[0077] Specifically, in this embodiment, the manifold 6 is bonded or heat-fused to the second ends of the first inner drain pipe 3 and the second inner drain pipe 4; and / or, the manifold 6 is bonded or heat-fused to the exhaust pipe 5.

[0078] As is understood, bonding is a method of joining two or more surfaces together using an adhesive (glue). Adhesives can be in liquid, paste, or solid form and cure through a chemical reaction or physical change to form a strong bond.

[0079] Hot melt bonding is a method of joining two or more thermoplastic materials by heating the surfaces together to melt them, then cooling and solidifying them to form a strong bond. This method is commonly used for joining plastic pipes and fittings.

[0080] By using adhesives, tiny gaps can be filled to create a seamless connection, reducing the risk of gas leakage and thus forming a good seal. Furthermore, adhesive bonding is suitable for joining various materials and can be flexibly applied to different design requirements.

[0081] By using heat fusion welding to create a seamless connection, the risk of gas leakage can be reduced, ensuring the airtightness of the system. At the same time, the connection points of heat fusion welding have high durability and can maintain stable performance over a long period.

[0082] Specifically, in some embodiments, the manifold 6 is made of plastic. This allows the manifold 6 to be connected to the exhaust pipe 5, the first inner exhaust pipe 3, and the second inner exhaust pipe 4 via heat fusion, forming a stable structure and reducing production costs.

[0083] Specifically, please refer to Figure 4 In other embodiments, the exhaust pipe 5 includes two connecting sections 51 and a confluence section 52. One end of each of the two connecting sections 51 is connected to the confluence section 52, and the other end is connected to the second end of the first inner exhaust pipe 3 and the second inner exhaust pipe 4, respectively.

[0084] It is understood that one end of one of the connecting sections 51 is connected to the second end of the first inner exhaust pipe 3, and one end of the other connecting section 51 is connected to the second end of the second inner exhaust pipe 4. The other ends of both connecting sections 51 are connected to the confluence section 52, which ultimately merges the two gas streams before discharging them from the compressor. The design of the two connecting sections 51 allows sufficient time for the gas to be evenly distributed before confluence, reducing turbulence at the inlet of the confluence section 52 and further reducing noise.

[0085] The two connecting sections 51 and the confluence section 52 are integrally formed to form a complete exhaust pipe 5 structure. The integral forming manufacturing process is relatively simple, reducing welding and assembly steps and lowering manufacturing costs. The seamless design reduces maintenance and repair workload and extends the service life of the exhaust pipe 5. Without the interference of seams and welding points, the gas converges more evenly in the confluence section 52, reducing turbulence and pulsation and further improving the stability of gas flow.

[0086] Specifically, in some embodiments, the first inner drain pipe 3 and / or the second inner drain pipe 4 are made of plastic pipes. Plastic pipes are typically made of thermoplastics (such as polyethylene, polypropylene, etc.), and have advantages such as good corrosion resistance, lightweight, and low cost. When connected to the manifold 6, a heat fusion connection can be used.

[0087] In this embodiment, please refer to Figure 1 and Figure 2Both the first high-pressure chamber 1 and the second high-pressure chamber 2 are provided with openings; the compressor 100 also includes two covers 7, which are respectively covered at the openings of the first high-pressure chamber 1 and the second high-pressure chamber 2; the first inner drain pipe 3 and the second inner drain pipe 4 are respectively bonded or heat-fused to the corresponding covers 7.

[0088] It should be noted that the two covers 7 are made of metal and can be connected to the crankcase by hexagonal head screws.

[0089] The cover 7 tightly covers the opening of the high-pressure chamber, ensuring that high-pressure gas will not leak and improving the system's sealing performance. The first inner drain pipe 3 and the second inner drain pipe 4 are fixed to the corresponding cover 7 by adhesive bonding or heat fusion to form a seamless connection, further improving the sealing performance.

[0090] The cover 7 is bonded or heat-fused to the first inner drain pipe 3 and the second inner drain pipe 4, ensuring that the connection points between the first inner drain pipe 3 and the second inner drain pipe 4 and the cover 7 are not easily detached under the impact of high-pressure gas. This eliminates the seams found in traditional welding or mechanical connections, reduces the risk of gas leakage, improves system reliability, reduces complex steps in the manufacturing process, and increases production efficiency.

[0091] It should also be noted that if maintenance or replacement of parts is required, adhesive and thermoplastic connections are relatively easy to disassemble, facilitating inspection and maintenance, reducing maintenance frequency and workload, and lowering maintenance costs.

[0092] Using a mass-produced model from the existing technology as a reference prototype, the cooling capacity, input force, and compressor coefficient of performance (COP) of the compressors in the two embodiments provided by this invention were simulated and calculated. The results of the comparative analysis are as follows:

[0093] Style Cooling capacity / [W] Input force / [W] COP Existing technology 191.01 77.90 2.452 First Embodiment 192.98 77.68 2.484 Second Embodiment 191.63 77.62 2.469

[0094] Please refer to Figures 5 to 10 , Figure 5 This is a first-moment flow diagram of a certain model in mass production using existing technology. Figure 6 This is a second-time streamline diagram of a certain mass-produced model in the existing technology. Figure 7 This is a first-time streamline diagram of the first embodiment of the compressor provided by the present invention. Figure 8 This is a second-time-phase streamline diagram of the first embodiment of the compressor provided by the present invention. Figure 9 This is a first-moment streamline diagram of the second embodiment of the compressor provided by the present invention. Figure 10The second-time-phase streamline diagram of the compressor in the second embodiment of the present invention clearly shows that, in the first and second embodiments, the input force of the compressor 100 is reduced, the load is reduced, and the flow resistance is smaller; the compressor performance coefficient COP is improved.

[0095] The present invention also proposes a refrigeration device, which may be a refrigerator, an air conditioner, etc. The refrigeration device includes a heat exchanger and a compressor 100. The specific structure of the compressor 100 is as described in the above embodiments. Since the refrigeration device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0096] Specifically, in one embodiment, the refrigeration equipment includes a refrigerator. During the refrigerator's refrigeration process, when the compressor 100 operates, it can reduce throttling losses while increasing the refrigeration capacity.

[0097] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A compressor, characterized in that, include: case; An electric motor is disposed within the housing, and the electric motor has an output shaft; A crankshaft connected to the output shaft for being driven to rotate by the motor; A crankcase, disposed within the housing, the crankcase comprising: A compression cylinder includes a working chamber and a piston movably mounted in the working chamber. The piston is connected to the crankshaft via a connecting rod to drive the piston when the crankshaft moves. The compression cylinder has an air inlet and an air outlet. A first high-pressure chamber and a second high-pressure chamber, wherein the first high-pressure chamber is connected to the exhaust port of the compression cylinder, and the second high-pressure chamber is not connected to the exhaust port of the compression cylinder, and the first high-pressure chamber and the second high-pressure chamber are interconnected; and, A first inner drain pipe and a second inner drain pipe, wherein a first end of the first inner drain pipe is connected to the first high-pressure cavity, and a first end of the second inner drain pipe is connected to the second high-pressure cavity; and... An exhaust pipe, wherein the exhaust pipe is connected to the second end of the first inner exhaust pipe and the second inner exhaust pipe; The inner diameter of the first inner pipe is set to be smaller than the inner diameter of the second inner pipe.

2. The compressor as described in claim 1, characterized in that, The compressor also includes a manifold with three ports, two of which are connected to the second ends of the first inner exhaust pipe and the second inner exhaust pipe, respectively, and the other port is connected to the exhaust pipe.

3. The compressor as described in claim 2, characterized in that, The manifold is bonded or heat-fused to the second ends of the first inner drain pipe and the second inner drain pipe; and / or, The manifold is bonded to the exhaust pipe or heat-fused together.

4. The compressor as described in claim 2, characterized in that, The manifold is made of plastic.

5. The compressor as described in claim 1, characterized in that, The exhaust pipe includes two connecting sections and a confluence section. One end of each of the two connecting sections is connected to the confluence section, and the other end is connected to the second end of the first inner exhaust pipe and the second inner exhaust pipe, respectively.

6. The compressor as claimed in claim 1, characterized in that, The first inner drain pipe and / or the second inner drain pipe are made of plastic pipe.

7. The compressor as claimed in claim 1, characterized in that, Both the first high-pressure chamber and the second high-pressure chamber are provided with openings; The compressor also includes two covers, which are respectively placed over the openings of the first high-pressure chamber and the second high-pressure chamber; The first inner pipe and the second inner pipe are respectively bonded or heat-fused to the corresponding cover body.

8. A refrigeration device, characterized in that, Includes the compressor as described in any one of claims 1 to 7.

9. The refrigeration equipment as described in claim 8, characterized in that, The refrigeration equipment includes a refrigerator.

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