Compressors and refrigeration equipment

Abstract

This invention discloses a compressor and refrigeration equipment, relating to the field of compressor technology. The compressor includes a pump body assembly and a first enthalpy-increasing assembly. The pump body assembly is configured with a low-pressure compression chamber, an intermediate chamber, and a high-pressure compression chamber. The low-pressure compression chamber and the exhaust port are connected through the inlets of the intermediate chamber and the high-pressure compression chamber. The intermediate chamber can cool the refrigerant to a certain extent, which helps reduce the input force required for compression in the high-pressure compression chamber and improves the compressor's energy efficiency. The two-stage compression through the low-pressure and high-pressure compression chambers results in a higher refrigerant pressure at the final discharge, improving the compressor's volumetric efficiency. The ratio of the minimum flow area of ​​the first channel to the displacement of the low-pressure compression chamber is 'a', satisfying: 1 ≥ a ≥ 0.039. A reasonable design of the relationship between the minimum flow area of ​​the first enthalpy-increasing assembly and the displacement of the low-pressure compression chamber can improve the compressor's performance and meet heating requirements in low-temperature environments.

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] When an air conditioner is heating in a low-temperature environment, the temperature difference between the outdoor temperature and the evaporator decreases due to the low outdoor temperature. Heat transfer now relies on this temperature difference, leading to a reduction in the air conditioner's heating capacity. In related technologies, electric auxiliary heating is typically used to compensate for the insufficient heating capacity in low-temperature environments, but this method consumes a significant amount of energy. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a compressor that, by connecting the enthalpy-increasing component and the low-pressure compression chamber of the pump body assembly, and by rationally designing the relationship between the minimum flow cross-sectional area of ​​the enthalpy-increasing component and the displacement of the low-pressure compression chamber, can improve the performance of the compressor, meet the heating requirements in low-temperature environments, and reduce energy consumption.

[0004] The present invention also proposes a refrigeration device having the above-mentioned compressor.

[0005] According to a first aspect of the present invention, a compressor includes: a pump body assembly having a low-pressure compression chamber, an intermediate chamber, and a high-pressure compression chamber, wherein the exhaust port of the low-pressure compression chamber is connected to the inlet of the high-pressure compression chamber through the intermediate chamber; and a first enthalpy-increasing assembly connected to the low-pressure compression chamber through a first channel, the first enthalpy-increasing assembly being used to deliver refrigerant to the low-pressure compression chamber; wherein the ratio of the minimum flow area of ​​the first channel to the displacement of the low-pressure compression chamber is a, satisfying: 1 ≥ a ≥ 0.039.

[0006] The compressor according to embodiments of the present invention has at least the following beneficial effects:

[0007] The pump assembly is configured with a low-pressure compression chamber, an intermediate chamber, and a high-pressure compression chamber. The low-pressure compression chamber and the exhaust port are connected through the inlets of the intermediate and high-pressure compression chambers. Therefore, the refrigerant discharged from the low-pressure compression chamber can pass through the intermediate chamber before entering the high-pressure compression chamber. The intermediate chamber can cool the refrigerant to a certain extent, which helps reduce the input force required for compression in the high-pressure compression chamber and improves the compressor's energy efficiency. The two-stage compression through the low-pressure and high-pressure compression chambers results in a higher refrigerant pressure at the final discharge, improving the compressor's volumetric efficiency and providing better heating performance even in low-temperature environments. The first enthalpy-increasing component is connected to the low-pressure compression chamber through a first channel. This component acts as a gas replenishment unit, supplying refrigerant into the low-pressure compression chamber, increasing the output gas volume, and ultimately improving the compressor's compression efficiency. Since the ratio of the minimum flow area of ​​the first channel to the displacement of the low-pressure compression chamber is 'a', it satisfies the condition: 1 ≥ a ≥ 0.039. When a is less than 0.039, the minimum flow area of ​​the first channel is too small, resulting in large refrigerant flow loss, which is not conducive to increasing the supply. When a is greater than 1, the minimum flow area of ​​the first channel is too large, which can easily lead to refrigerant backflow. Therefore, rationally designing the relationship between the minimum flow cross-sectional area of ​​the first enthalpy-increasing component and the displacement of the low-pressure compression chamber can improve the performance of the compressor and meet the heating requirements in low-temperature environments.

[0008] According to some embodiments of the present invention, the ratio of the minimum flow area of ​​the first channel to the displacement of the high-pressure compression chamber is b, which satisfies: 4.7 ≥ b ≥ 0.18.

[0009] According to some embodiments of the present invention, the ratio of the displacement of the low-pressure compression chamber to the displacement of the high-pressure compression chamber is c, which satisfies: 0.4≤c≤0.8.

[0010] According to some embodiments of the present invention, the pump body assembly further includes a first cylinder, the low-pressure compression chamber is located inside the first cylinder, the first cylinder is provided with the first channel, and the first enthalpy-increasing component is inserted into the first channel.

[0011] According to some embodiments of the present invention, the compressor further includes a second enthalpy-increasing component for supplying refrigerant to the intermediate cavity, the second enthalpy-increasing component being connected to the intermediate cavity through a second channel, the minimum flow area of ​​the second channel being greater than or equal to the minimum flow area of ​​the first channel.

[0012] According to some embodiments of the present invention, the pump body assembly further includes a second cylinder and a partition, the high-pressure compression chamber is located inside the second cylinder, the partition is connected between the first cylinder and the second cylinder, the partition is provided with a second channel and the intermediate cavity, and the second enthalpy-increasing component is inserted into the second channel.

[0013] According to some embodiments of the present invention, the pump body assembly further includes a lower bearing, a lower muffler, a second cylinder, and a partition. The lower bearing and the lower muffler are connected to the first cylinder, and the lower bearing and the lower muffler together form a first cavity. The partition is connected between the first cylinder and the second cylinder, and the partition has a second cavity and a second channel. The second cavity and the first cavity are connected through a connecting channel and form the intermediate cavity. The second enthalpy-increasing component is inserted into the second channel.

[0014] According to some embodiments of the present invention, the intermediate cavity includes multiple cavities connected by a communication channel, and the exhaust port of the low-pressure compression cavity is configured to exhaust gas into one of the cavities or to exhaust gas into the multiple cavities respectively.

[0015] According to some embodiments of the present invention, the low-pressure compression chamber is provided in multiple ways, and the exhaust ports of the multiple low-pressure compression chambers are all connected to the intermediate chamber; and / or the high-pressure compression chamber is provided in multiple ways, and the air inlets of the multiple high-pressure compression chambers are all connected to the intermediate chamber.

[0016] A refrigeration device according to a second aspect of the present invention includes the compressor described in the above embodiments.

[0017] The refrigeration device according to embodiments of the present invention has at least the following beneficial effects:

[0018] The compressor using the first aspect embodiment has a pump assembly comprising a low-pressure compression chamber, an intermediate chamber, and a high-pressure compression chamber. The low-pressure compression chamber and the exhaust port are connected through the inlets of the intermediate and high-pressure compression chambers. Therefore, the refrigerant discharged from the low-pressure compression chamber can pass through the intermediate chamber before entering the high-pressure compression chamber. The intermediate chamber can cool the refrigerant to a certain extent, which helps reduce the input force required for compression in the high-pressure compression chamber and improves the compressor's energy efficiency. Furthermore, the two-stage compression through the low-pressure and high-pressure chambers results in a higher refrigerant pressure at the final discharge, improving the compressor's volumetric efficiency and providing better heating performance even in low-temperature environments. The first enthalpy-increasing component is connected to the low-pressure compression chamber through a first channel. This component acts as a gas replenishment mechanism, supplying refrigerant into the low-pressure compression chamber, increasing the output gas volume, and ultimately improving the compressor's compression efficiency. Since the ratio of the minimum flow area of ​​the first channel to the displacement of the low-pressure compression chamber is 'a', it satisfies the condition: 1 ≥ a ≥ 0.039. When a is less than 0.039, the minimum flow area of ​​the first channel is too small, resulting in large refrigerant flow loss, which is not conducive to increasing the supply. When a is greater than 1, the minimum flow area of ​​the first channel is too large, which can easily lead to refrigerant backflow. Therefore, rationally designing the relationship between the minimum flow cross-sectional area of ​​the first enthalpy-increasing component and the displacement of the low-pressure compression chamber can improve the performance of the compressor and meet the heating requirements in low-temperature environments.

[0019] Additional aspects and advantages of the 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

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a cross-sectional schematic diagram of a compressor according to an embodiment of the present invention;

[0022] Figure 2 This is a cross-sectional schematic diagram of a pump body assembly according to an embodiment of the present invention;

[0023] Figure 3 This is a cross-sectional schematic diagram of a compressor according to an embodiment of the present invention;

[0024] Figure 4 This is a graph showing the relationship between the ratio of the minimum flow area of ​​the first channel to the displacement of the low-pressure compression chamber and the compressor COP in one embodiment of the present invention.

[0025] Figure 5 This is a graph showing the relationship between the ratio of the minimum flow area of ​​the first channel to the displacement of the high-pressure compression chamber and the compressor COP in one embodiment of the present invention.

[0026] Icon labels:

[0027] Compressor 1000;

[0028] Pump body assembly 100; first cylinder 110; low-pressure compression chamber 111; first channel 112; lower bearing 120; lower silencer 130; first cavity 131; upper bearing 150; second cylinder 160; high-pressure compression chamber 161; upper silencer 170; third cavity 171; partition 190; second cavity 191; second channel 192; intermediate cavity 193;

[0029] Casing 200; Inner cavity 210; Exhaust pipe 220;

[0030] Liquid reservoir 300; air inlet pipe 310;

[0031] Motor assembly 400; stator 410; rotor 420; crankshaft 430; first piston 431; second piston 432;

[0032] First enthalpy-increasing component 500;

[0033] Second enthalpy-increasing component 600. Detailed Implementation

[0034] Embodiments of the present invention are described in detail below. 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 the present invention, and should not be construed as limiting the present invention.

[0035] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention 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 invention.

[0036] In the description of this invention, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or their sequential relationship.

[0037] In the description of this invention, unless otherwise explicitly defined, terms such as "setting," "installing," and "connecting" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0038] Compressors can be used in refrigeration or heating equipment, such as heat pump water heaters and air conditioners. They compress low-temperature, low-pressure refrigerant into high-temperature, high-pressure refrigerant, providing power for the refrigeration system's circulation. Compressors can employ multi-stage compression, which allows for higher volumetric efficiency and increases the refrigerant pressure discharged from the pump assembly, enabling them to perform well in both low-temperature heating and high-temperature cooling applications.

[0039] For example, refer to Figure 1 As shown, a compressor 1000 according to an embodiment of the present invention includes a housing 200, a pump assembly 100, a motor assembly 400, and a liquid receiver 300. The housing 200 has an inner cavity 210, and an exhaust pipe 220 for discharging air is provided at the upper end of the housing 200. The pump assembly 100 is installed inside the inner cavity 210, and the liquid receiver 300 is located outside the housing 200 and connected to the pump assembly 100 through an intake pipe 310. The motor assembly 400 includes a stator 410 and a rotor 420. The stator 410 is fixedly connected to the inner wall of the housing 200, and the rotor 420 is located between the stators 410.

[0040] Reference Figure 2As shown, the pump assembly 100 includes a lower bearing 120, a first cylinder 110, a partition 190, a second cylinder 160, an upper bearing 150, and a crankshaft 430. The motor assembly 400 drives the crankshaft 430 to rotate. Along the axial direction of the crankshaft 430, the crankshaft 430 includes a first eccentric portion and a second eccentric portion spaced apart. A first piston 431 is fitted onto the first eccentric portion, and a second piston 432 is fitted onto the second eccentric portion. The lower bearing 120 is connected to the lower end face of the first cylinder 110. The first cylinder 110 forms a low-pressure compression chamber 111. The first piston 431 is rotatably disposed within the low-pressure compression chamber 111. The air inlet pipe 310 of the reservoir 300 is connected to the first cylinder 110. A partition 190 is disposed on the side of the first cylinder 110 opposite to the lower bearing 120, and a second cylinder 160 is connected to the side of the partition 190 opposite to the first cylinder 110. The partition 190 serves to separate the first cylinder 110 and the second cylinder 160. The second cylinder 160 forms a high-pressure compression chamber 161, and a second piston 432 is rotatably disposed within the high-pressure compression chamber 161. The pump body assembly 100 is provided with an intermediate chamber 193, and the exhaust port of the low-pressure compression chamber 111 is connected to the intake port of the high-pressure compression chamber 161 through the intermediate chamber 193. An upper bearing 150 is connected to the upper end face of the second cylinder 160, and a crankshaft 430 passes through the upper bearing 150 and the lower bearing 120 to reduce the frictional force when the crankshaft 430 rotates and ensure the stable operation of the crankshaft 430.

[0041] Therefore, when the compressor 1000 is operating, the low-temperature, low-pressure refrigerant enters the receiver 300. The receiver 300 reduces the amount of liquid refrigerant entering the pump assembly 100, preventing liquid slugging. Gaseous refrigerant enters the low-pressure compression chamber 111 through the outlet pipe of the receiver 300. When the crankshaft 430 rotates, it drives the first piston 431 to rotate within the low-pressure compression chamber 111, thus performing a primary compression of the low-temperature, low-pressure refrigerant. The refrigerant is then discharged through the exhaust port of the low-pressure compression chamber 111 into the intermediate chamber 193. From the intermediate chamber 193, the refrigerant enters the high-pressure compression chamber 161 for a secondary compression, and finally enters the inner cavity 210 of the housing 200. After further heating by the stator 410 and rotor 420, it becomes a high-temperature, high-pressure refrigerant, which is then discharged from the exhaust pipe 220 of the housing 200. By employing a two-stage compression method, the refrigerant pressure can be increased, enabling the compressor 1000 to perform well in both low-temperature heating and high-temperature cooling applications.

[0042] To increase the displacement of compressor 1000 and thus improve its cooling capacity in high-temperature environments or its heating capacity in low-temperature environments, refer to... Figure 1As shown in the embodiment of the present invention, the compressor 1000 further includes a first enthalpy-increasing component 500, which is connected to the low-pressure compression chamber 111 via a first channel 112. The first enthalpy-increasing component 500 serves to replenish gas, delivering refrigerant into the low-pressure compression chamber 111, increasing the gas output of the low-pressure compression chamber 111, and ultimately improving the compression efficiency of the compressor 1000.

[0043] In embodiments of the present invention, the ratio of the minimum flow area of ​​the first channel 112 to the displacement of the low-pressure compression chamber 111 is 'a', satisfying: 1 ≥ a ≥ 0.039. For example, a can be 0.8, 0.6, 0.5, 0.35, 0.2, 0.1, etc. It should be noted that the unit of flow area is mm. 2 The unit of displacement is cc, and this unit will be used in subsequent embodiments. It is understandable that when a is less than 0.039, the minimum flow area of ​​the first channel 112 is too small, resulting in significant refrigerant flow loss and hindering the increase of refrigerant supply; when a is greater than 1, the minimum flow area of ​​the first channel 112 is too large, easily leading to refrigerant backflow. (Refer to...) Figure 4 As shown, when the value of 'a' gradually increases, within the range of 0.039 to 1, the COP increase of compressor 1000 first gradually increases and then decreases. Therefore, by rationally designing the relationship between the minimum flow cross-sectional area of ​​the first enthalpy-increasing component 500 and the displacement of the low-pressure compression chamber 111, the performance of compressor 1000 can be improved, meeting the heating requirements in low-temperature environments. It should be noted that during cooling, COP refers to the ratio of the cooling capacity of compressor 1000 to the input power; during heating, it is COP + 1. The higher the COP value, the higher the efficiency of compressor 1000, and the more energy-saving it is.

[0044] In embodiments of the present invention, the ratio of the minimum flow area of ​​the first channel 112 to the displacement of the high-pressure compression chamber 161 is b, satisfying: 4.7 ≥ b ≥ 0.18. For example, b can be 4.5, 4.3, 3, 3.8, 3.5, 3, 2.5, 1.6, etc. It should be noted that since the displacement of the high-pressure compression chamber 161 is generally smaller than that of the low-pressure compression chamber 111, the value of b is generally greater than a. It is understandable that when b is less than 0.18, the minimum flow cross-section of the first channel 112 is too small, which easily increases the refrigerant flow loss, leading to a reduction in the supply. When b is greater than 4.7, it easily leads to refrigerant backflow, increased pulsation, and affects the performance of the compressor 1000. (Refer to...) Figure 5 As shown, when the value of b gradually increases, the performance improvement of compressor 1000 first increases and then decreases within the range of 0.18 to 6. Therefore, by rationally designing the relationship between the minimum flow cross-sectional area of ​​the first enthalpy-increasing component 500 and the displacement of the high-pressure compression chamber 161, the performance of compressor 1000 can be improved, meeting the heating requirements in low-temperature environments.

[0045] In embodiments of the present invention, the ratio of the displacement of the low-pressure compression chamber 111 to the displacement of the high-pressure compression chamber 161 is c, satisfying: 0.4 ≤ c ≤ 0.8, for example, c = 0.5, c = 0.6, c = 0.7. Taking the displacement of the high-pressure compression chamber 161 as an example, when c is less than 0.4, for low-temperature heating conditions, the displacement of the low-pressure compression chamber 111 is too small, resulting in insufficient heating capacity and a poor user experience; when c is greater than 0.8, the displacement of the low-pressure compression chamber 111 is too large, and the high-pressure compression chamber 161 cannot completely consume the refrigerant discharged from the low-pressure compression chamber 111, resulting in excess performance and a decrease in the volumetric efficiency of the compressor 1000. Therefore, rationally designing the ratio of the displacement of the low-pressure compression chamber 111 to the displacement of the high-pressure compression chamber 161 can improve the problem of high exhaust resistance, reduce vibration and noise, and improve the volumetric efficiency of the compressor 1000.

[0046] Reference Figure 2 As shown, in an embodiment of the present invention, the first cylinder 110 is provided with a first channel 112, and the outlet pipe of the first enthalpy-increasing component 500 is inserted into the first channel 112. The opening of the first channel 112 gradually increases in size towards the first enthalpy-increasing component 500, thereby facilitating connection with the outlet pipe of the first enthalpy-increasing component 500 and improving the sealing at the connection point, thus mitigating leakage. In another embodiment of the present invention, the first channel 112, in addition to employing... Figure 2 The through-hole shown can also be in the form of a pipe, depending on the actual situation.

[0047] Reference Figure 3 As shown in the embodiment of the present invention, the compressor 1000 further includes a second enthalpy-increasing component 600, which is connected to the intermediate cavity 193 through a second channel 192, thereby supplying refrigerant to the intermediate cavity 193. It is understood that since the low-pressure compression cavity 111 discharges refrigerant into the intermediate cavity 193 after compressing the refrigerant, the refrigerant supplied to the intermediate cavity 193 by the second enthalpy-increasing component 600 can mix with the refrigerant in the intermediate cavity 193, and finally enter the interior of the high-pressure compression cavity 161 through the air inlet. Therefore, the intermediate cavity 193 allows for thorough mixing of the refrigerant inside and the refrigerant from the second enthalpy-increasing component 600, reducing excessive pulsation during mixing and improving mixing efficiency.

[0048] In an embodiment of the present invention, the minimum flow area of ​​the second channel 192 is greater than or equal to the minimum flow area of ​​the first channel 112. Therefore, the flow rate of the second enthalpy-increasing component 600 is greater than the flow rate of the first enthalpy-increasing component 500, which can reduce the flow loss in the jetting process and improve the performance of the compressor 1000.

[0049] Reference Figure 2As shown, in an embodiment of the present invention, the partition member 190 has a connected intermediate cavity 193 and a second channel 192. The outlet pipe of the second enthalpy-increasing component 600 is inserted into the second channel 192, thereby supplying refrigerant to the intermediate cavity 193 through the second channel 192. The partition member 190 includes two connected partitions, one of which has a groove on its side facing the other partition; that is, both partitions have grooves, and the two grooves enclose the intermediate cavity 193. Using two partitions simplifies the structure of the partition member 190 and improves production efficiency.

[0050] In another embodiment of the invention, the intermediate cavity 193 may include multiple cavities connected by a communication channel, and the exhaust port of the low-pressure compression cavity 111 is configured to exhaust air into one of the cavities or into multiple cavities. For example, referring to... Figure 2 As shown, the pump assembly 100 also includes a lower silencer 130, which is connected to a lower bearing 120. A first cavity 131 is formed between the lower bearing 120 and the lower silencer 130. A partition 190 forms a second cavity 191 and a second channel 192 that are connected to each other. The second cavity 191 and the first cavity 131 are connected through the connecting channel to form an intermediate cavity 193. The air inlet pipe 310 of the second enthalpy-increasing assembly 600 is inserted into the second channel 192. Therefore, the intermediate cavity 193 allows the refrigerant inside it and the refrigerant of the second enthalpy-increasing assembly 600 to mix thoroughly, reducing the problem of excessive pulsation when the two refrigerants are mixed and improving the mixing efficiency.

[0051] In one embodiment of the invention, the lower bearing 120 is provided with a valve seat, allowing the refrigerant in the low-pressure compression chamber 111 to sequentially enter the first chamber 131, the connecting channel, and the second chamber 191 through the valve seat, and finally enter the high-pressure compression chamber 161. In another embodiment of the invention, both the lower bearing 120 and the partition plate 190 are provided with valve seats, allowing the refrigerant in the low-pressure compression chamber 111 to enter the first chamber 131 and the second chamber 191 through the two valve seats respectively. That is, the low-pressure compression chamber 111 adopts a dual-exhaust scheme, which can effectively reduce exhaust losses and improve the performance of the compressor 1000.

[0052] Reference Figure 2 As shown in the embodiment of the present invention, the pump body assembly 100 further includes an upper silencer 170, which is connected to an upper bearing 150, and a third cavity 171 is formed between the upper silencer 170 and the upper bearing 150. The refrigerant discharged from the high-pressure compression chamber 161 can enter the third cavity 171 before being discharged into the inner cavity 210, which helps to reduce exhaust noise and improve the user experience.

[0053] In embodiments of the present invention, multiple low-pressure compression chambers 111 are provided, and the exhaust ports of each of the multiple low-pressure compression chambers 111 are connected to the intermediate chamber 193. For example, the multiple low-pressure compression chambers 111 are arranged sequentially in a vertical direction. In embodiments of the present invention, multiple high-pressure compression chambers 161 can also be provided, and the inlets of each of the multiple high-pressure compression chambers 161 are connected to the intermediate chamber 193, and the multiple high-pressure compression chambers 161 are arranged sequentially in a vertical direction. It is understood that providing multiple low-pressure compression chambers 111 or multiple high-pressure compression chambers 161 can improve the compression efficiency of the refrigerant.

[0054] In embodiments of the present invention, the gaseous refrigerant used for replenishing gas in the first enthalpy-increasing component 500 can be provided by a flash evaporator, which is installed in the circulation loop of the refrigeration or heating system. Taking the heating system as an example: after the liquid refrigerant releases heat through the condenser, it flows through the first throttling device. Under the action of the first throttling device, it changes from a completely liquid refrigerant to a gas-liquid mixture. The gas-liquid mixture then enters the flash evaporator. The gaseous refrigerant flows along the outlet of the flash evaporator to the first enthalpy-increasing component 500, while the liquid refrigerant flows out from the liquid outlet of the flash evaporator and enters the evaporator after passing through the second throttling device. Finally, the refrigerant that has absorbed heat enters the low-pressure compression chamber 111 through the liquid receiver 300. The refrigerant used for replenishing gas in the second enthalpy-increasing component 600 can also be provided by a flash evaporator. That is, the refrigeration or heating system can be equipped with two flash evaporators, which respectively supply gaseous refrigerant to the first enthalpy-increasing component 500 and the second enthalpy-increasing component 600. In another embodiment of the present invention, the flash evaporator can be replaced by a plate heat exchanger, that is, the refrigerant used for gas replenishment in the first enthalpy-increasing component 500 and the second enthalpy-increasing component 600 can also be provided by a plate heat exchanger, and the appropriate solution can be selected according to the actual situation.

[0055] A refrigeration device according to one embodiment of the present invention includes the compressor 1000 of the above embodiments. The refrigeration device can be a central air conditioner, a modular air conditioner, a split air conditioner, a ducted air conditioner, a window air conditioner, etc. The refrigeration device employs the compressor 1000 of the above embodiments. The pump assembly 100 of the compressor 1000 is configured with a low-pressure compression chamber 111, an intermediate chamber 193, and a high-pressure compression chamber 161. The low-pressure compression chamber 111 and the exhaust port are connected through the air inlet of the intermediate chamber 193 and the high-pressure compression chamber 161. Therefore, the refrigerant discharged from the low-pressure compression chamber 111 can pass through the intermediate chamber 193 before entering the high-pressure compression chamber 161. The intermediate chamber 193 can cool the refrigerant to a certain extent, which helps to reduce the input force required for compression in the high-pressure compression chamber 161 and improves the energy efficiency of the compressor 1000. Furthermore, the two-stage compression through the low-pressure compression chamber 111 and the high-pressure compression chamber 161 results in a higher refrigerant pressure discharged by the compressor 1000, which improves the volumetric efficiency of the compressor 1000 and provides better heating performance even in low-temperature environments. The first enthalpy-increasing component 500 is connected to the low-pressure compression chamber 111 through the first channel 112. The first enthalpy-increasing component 500 acts as a gas replenishment unit, supplying refrigerant into the low-pressure compression chamber 111, increasing the gas output of the low-pressure compression chamber 111, and ultimately improving the compression efficiency of the compressor 1000. Since the ratio of the minimum flow area of ​​the first channel 112 to the displacement of the low-pressure compression chamber 111 is 'a', it satisfies the condition: 1 ≥ a ≥ 0.039. When a is less than 0.039, the minimum flow area of ​​the first channel 112 is too small, resulting in significant refrigerant flow loss, which is detrimental to increasing the replenishment amount. When a is greater than 1, the minimum flow area of ​​the first channel 112 is too large, easily leading to refrigerant backflow. Therefore, rationally designing the relationship between the minimum flow area of ​​the first enthalpy-increasing component 500 and the displacement of the low-pressure compression chamber 111 can improve the performance of the compressor 1000 and meet the heating requirements in low-temperature environments.

[0056] Since the refrigeration equipment adopts all the technical solutions of the compressor 1000 in the above embodiments, it has at least all the beneficial effects brought about by the technical solutions in the above embodiments, which will not be repeated here.

[0057] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A compressor, characterized in that, include: The pump assembly includes a low-pressure compression chamber, an intermediate chamber, and a high-pressure compression chamber. The exhaust port of the low-pressure compression chamber is connected to the inlet of the high-pressure compression chamber through the intermediate chamber. The pump assembly also includes a first cylinder, in which the low-pressure compression chamber is located. The first cylinder has a first channel, and a first enthalpy-increasing component is inserted into the first channel. The compressor also includes a second enthalpy-increasing component for supplying refrigerant to the intermediate chamber. The second enthalpy-increasing component is connected to the intermediate chamber through a second channel. The pump assembly also includes a second cylinder and a partition. The high-pressure compression chamber is located in the second cylinder. The partition is connected between the first cylinder and the second cylinder. The partition has a second channel and the intermediate chamber, and the second enthalpy-increasing component is inserted into the second channel. The first enthalpy-increasing component is connected to the low-pressure compression chamber through a first channel. The first enthalpy-increasing component is used to deliver refrigerant to the low-pressure compression chamber. The minimum flow area of ​​the second channel is greater than or equal to the minimum flow area of ​​the first channel. Wherein, the ratio of the minimum flow area of ​​the first channel to the displacement of the low-pressure compression chamber is a, which satisfies: 1≥a≥0.039; the ratio of the minimum flow area of ​​the first channel to the displacement of the high-pressure compression chamber is b, which satisfies: 4.7≥b≥0.18; and the ratio of the displacement of the low-pressure compression chamber to the displacement of the high-pressure compression chamber is c, which satisfies: 0.4≤c≤0.

8.

2. The compressor according to claim 1, characterized in that: The pump assembly further includes a lower bearing, a lower muffler, a second cylinder, and a partition. The lower bearing and the lower muffler are connected to the first cylinder, and the lower bearing and the lower muffler together form a first cavity. The partition is connected between the first cylinder and the second cylinder, and the partition has a second cavity and a second channel. The second cavity and the first cavity are connected through a connecting channel to form the intermediate cavity. The second enthalpy-increasing component is inserted into the second channel.

3. The compressor according to claim 1, characterized in that: The intermediate cavity includes multiple chambers that are connected by a communication channel. The exhaust port of the low-pressure compression chamber is configured to exhaust air into one of the chambers or into each of the multiple chambers.

4. The compressor according to claim 1, characterized in that: The low-pressure compression chamber is provided in multiple locations, and the exhaust ports of the multiple low-pressure compression chambers are all connected to the intermediate chamber; and / or The high-pressure compression chamber is provided in multiple ways, and the air inlets of the multiple high-pressure compression chambers are all connected to the intermediate chamber.

5. A refrigeration device, characterized in that: Includes the compressor as described in any one of claims 1 to 4.

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