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 exhaust port of the low-pressure compression chamber of the pump body assembly is connected to the inlet of the intermediate chamber and the high-pressure compression chamber. Therefore, the refrigerant can be compressed in the low-pressure compression chamber and discharged into the intermediate chamber, and then enter the high-pressure compression chamber for secondary compression, thereby increasing the pressure of the finally discharged refrigerant. This is beneficial for improving the compressor's heating capacity in low-temperature environments or cooling capacity in high-temperature environments. The volume of the first enthalpy-increasing assembly is the sum of the volume of its first inlet pipe, the volume of its first intermediate shell, and the volume of its first exhaust pipe, i.e., the volume of the first enthalpy-increasing assembly is V1, and the volume of the intermediate chamber is V2, satisfying: V1≥0.5V2. By rationally designing the ratio of the volume of the first enthalpy-increasing assembly to the volume of the intermediate chamber, pulsation during gas replenishment is reduced, thereby improving the performance of the compressor.

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] Refrigeration equipment such as refrigerators and air conditioners contain compressors. Taking an air conditioner compressor as an example, to improve the compressor's heating capacity in low-temperature environments or cooling capacity in high-temperature environments, the compressor usually has an enthalpy-increasing component. This component can replenish refrigerant into the compressor's pump assembly, thereby increasing the compressor's displacement and enhancing its heating capacity in low-temperature environments or cooling capacity in high-temperature environments. However, when the enthalpy-increasing component replenishes refrigerant into the pump assembly, it can easily lead to increased jet pulsation, affecting the compressor's performance. 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 intermediate cavity of the first enthalpy-increasing component and the pump body component, and by rationally designing the ratio of the volume of the first enthalpy-increasing component to the volume of the intermediate cavity, reduces pulsation during gas replenishment and improves the performance of the compressor.

[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 port of the high-pressure compression chamber through the intermediate chamber; and a first enthalpy-increasing assembly connected to the intermediate chamber and used to supply refrigerant to the intermediate chamber, the first enthalpy-increasing assembly including a first intake pipe, a first intermediate housing, and a first exhaust pipe; wherein the sum of the volume of the first intake pipe, the volume of the first intermediate housing, and the volume of the first exhaust pipe is V1, and the volume of the intermediate chamber is V2, satisfying: V1≥0.5V2.

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

[0007] The exhaust port of the low-pressure compression chamber of the pump assembly is connected to the inlet ports of the intermediate and high-pressure compression chambers. Therefore, the refrigerant can be compressed in the low-pressure chamber before being discharged to the intermediate chamber, and then enter the high-pressure chamber for secondary compression, thereby increasing the final discharged refrigerant pressure. This improves the compressor's heating capacity in low-temperature environments or cooling capacity in high-temperature environments. The first enthalpy-enhancing component is connected to the intermediate chamber and can supply refrigerant to it. Therefore, the refrigerant discharged from the low-pressure chamber to the intermediate chamber mixes with the refrigerant discharged from the first enthalpy-enhancing component in the intermediate chamber. This reduces the refrigerant temperature, alleviates problems such as increased power consumption due to overheating during intake in the high-pressure chamber, and also increases the refrigerant intake volume. The volume of the first enthalpy-increasing component is the sum of the volumes of its first intake pipe, first intermediate housing, and first exhaust pipe, i.e., the volume of the first enthalpy-increasing component is V1, and the volume of the intermediate cavity is V2, satisfying the condition: V1 ≥ 0.5V2. If V1 is less than 0.5V2, the volume of the first enthalpy-increasing component is too small, resulting in insufficient refrigerant replenishment, increased pulsation during refrigerant replenishment, and consequently, increased compressor vibration amplitude and noise. Therefore, a reasonable design of the ratio of the volume of the first enthalpy-increasing component to the volume of the intermediate cavity is crucial to reduce pulsation during refrigerant replenishment and improve compressor performance.

[0008] According to some embodiments of the present invention, the compressor further includes a second enthalpy-increasing assembly, which is connected to the low-pressure compression chamber or the high-pressure compression chamber and is used to deliver refrigerant to the low-pressure compression chamber or the high-pressure compression chamber; the second enthalpy-increasing assembly includes a second intake pipe, a second intermediate housing, and a second exhaust pipe, wherein the sum of the volume of the second intake pipe, the volume of the second intermediate housing, and the volume of the second exhaust pipe is V3, the displacement of the low-pressure compression chamber is C1, and the displacement of the high-pressure compression chamber is C2, satisfying: V3≥0.2C1; or V3≥0.2C2.

[0009] According to some embodiments of the present invention, the compressor further includes a liquid receiver connected to the low-pressure compression chamber, wherein the maximum diameter of the cross-section of the liquid receiver is greater than or equal to the maximum diameter of the cross-section of the second intermediate housing.

[0010] According to some embodiments of the present invention, the ratio of the sum of the volumes of the second intake pipe, the second intermediate housing, and the second exhaust pipe, V2, to the minimum flow area S2 of the second intake pipe is a2, which satisfies: 13 ≥ a2 ≥ 1.2.

[0011] According to some embodiments of the present invention, the ratio of the sum of the volumes of the first intake pipe, the first intermediate housing, and the first exhaust pipe, V1, to the minimum flow area S1 of the first intake pipe is a1, which satisfies: 13 ≥ a1 ≥ 1.2.

[0012] According to some embodiments of the present invention, the compressor further includes a liquid receiver connected to the low-pressure compression chamber, wherein the maximum diameter of the cross-section of the liquid receiver is greater than or equal to the maximum diameter of the cross-section of the first intermediate housing.

[0013] 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.

[0014] According to some embodiments of the present invention, the pump body assembly includes an upper bearing, a second cylinder, a partition, a first cylinder, and a lower bearing connected in sequence, wherein one of the plurality of cavities is formed within the partition.

[0015] According to some embodiments of the present invention, the partition includes an upper partition and a lower partition that are fixedly connected. The upper partition is fixedly connected to the lower end face of the second cylinder, and the lower partition is fixedly connected to the upper end face of the first cylinder. A first valve seat is provided in the cavity, and the first valve seat is provided with an exhaust port of the low-pressure compression chamber.

[0016] According to some embodiments of the present invention, the pump body assembly further includes a lower muffler connected to the lower bearing, the lower bearing having a second valve seat having an exhaust port of the low-pressure compression chamber, and the lower muffler and the lower bearing enclosing each other to form another of the plurality of chambers.

[0017] A refrigeration device according to a second aspect of the present invention includes the compressor described in the above embodiments.

[0018] The refrigeration device according to embodiments of the present invention has at least the following beneficial effects:

[0019] The compressor using the first aspect embodiment has its low-pressure compression chamber's exhaust port connected to the intermediate chamber and the high-pressure compression chamber's inlet port via a pump assembly. Therefore, the refrigerant can undergo primary compression in the low-pressure chamber before being discharged to the intermediate chamber, and then enter the high-pressure compression chamber for secondary compression, thereby increasing the final discharged refrigerant pressure. This improves the compressor's heating capacity in low-temperature environments or cooling capacity in high-temperature environments. The first enthalpy-increasing component is connected to the intermediate chamber and can supply refrigerant to it. Therefore, the refrigerant discharged from the low-pressure compression chamber to the intermediate chamber mixes with the refrigerant discharged from the first enthalpy-increasing component in the intermediate chamber, reducing the refrigerant temperature, mitigating problems such as increased power consumption due to overheating during high-pressure compression, and increasing the refrigerant intake volume. The volume of the first enthalpy-increasing component is the sum of the volumes of its first intake pipe, first intermediate housing, and first exhaust pipe, i.e., the volume of the first enthalpy-increasing component is V1, and the volume of the intermediate cavity is V2, satisfying the condition: V1 ≥ 0.5V2. If V1 is less than 0.5V2, the volume of the first enthalpy-increasing component is too small, resulting in insufficient refrigerant replenishment, increased pulsation during refrigerant replenishment, and consequently, increased compressor vibration amplitude and noise. Therefore, a reasonable design of the ratio of the volume of the first enthalpy-increasing component to the volume of the intermediate cavity is crucial to reduce pulsation during refrigerant replenishment and improve compressor performance.

[0020] 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

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 This is a schematic diagram of the structure of a compressor according to an embodiment of the present invention;

[0023] Figure 2 This is a cross-sectional view of a compressor according to an embodiment of the present invention;

[0024] Figure 3 This is a cross-sectional view of a pump body assembly according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of a first enthalpy-increasing component according to an embodiment of the present invention;

[0026] Figure 5 This is a cross-sectional view of a compressor according to another embodiment of the present invention.

[0027] Icon labels:

[0028] Compressor 1000;

[0029] 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; upper partition 192; lower partition 193; intermediate cavity 194;

[0030] Casing 200; Inner cavity 210; Exhaust pipe 220;

[0031] Liquid reservoir 300;

[0032] Motor assembly 400; stator 410; rotor 420; crankshaft 430; first piston 431; second piston 432;

[0033] First enthalpy-increasing component 500; first intake pipe 510; first intermediate housing 520; first exhaust pipe 530;

[0034] Second enthalpy-increasing component 600; second air intake pipe 610; second intermediate housing 620; second exhaust pipe 630. Detailed Implementation

[0035] 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.

[0036] 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.

[0037] 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.

[0038] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" 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.

[0039] 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.

[0040] For example, refer to Figure 1 and Figure 2 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 gas 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 a pipe. 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.

[0041] Reference Figure 3 As 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 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 194, through which the exhaust port of the low-pressure compression chamber 111 communicates with the intake port of the high-pressure compression chamber 161. 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 friction during crankshaft 430 rotation and ensure stable operation of the crankshaft 430.

[0042] 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 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 194. From the intermediate chamber 194, 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.

[0043] 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 1 and Figure 2 As shown in the embodiment of the present invention, the compressor 1000 further includes a first enthalpy-increasing component 500, which is connected to the intermediate cavity 194. The first enthalpy-increasing component 500 serves to replenish gas and can deliver refrigerant into the intermediate cavity 194. By mixing with the existing refrigerant in the intermediate cavity 194, the overall temperature of the refrigerant in the intermediate cavity 194 is reduced, thereby reducing the power consumption required when the high-pressure compression chamber 161 compresses the refrigerant.

[0044] Reference Figure 4 As shown, in an embodiment of the present invention, the first enthalpy-increasing component 500 includes a first intake pipe 510, a first intermediate housing 520, and a first exhaust pipe 530. The sum of the volumes of the first intake pipe 510, the first intermediate housing 520, and the first exhaust pipe 530 is V1, and the volume of the intermediate cavity 194 is V2, satisfying: V1 ≥ 0.5V2, for example, V1 = 0.8V2, V1 = V2, V1 = 1.2V2, V1 = 1.5V2. It is understood that if V1 is less than 0.5V2, the volume of the first enthalpy-increasing component 500 is too small, resulting in insufficient refrigerant replenishment and increased pulsation during refrigerant replenishment, leading to increased vibration amplitude and noise of the compressor 1000. Therefore, a reasonable design of the ratio of the volume of the first enthalpy-increasing component 500 to the volume of the intermediate cavity 194 is necessary to reduce pulsation during refrigerant replenishment and improve the performance of the compressor 1000.

[0045] Reference Figure 5As shown, in an embodiment of the present invention, the compressor 1000 further includes a second enthalpy-increasing component 600. The second enthalpy-increasing component 600 is connected to the low-pressure compression chamber 111 through a first channel 112, thereby supplying refrigerant into the low-pressure compression chamber 111 to increase the discharge volume of the low-pressure compression chamber 111. The second enthalpy-increasing component 600 includes a second intake pipe 610, a second intermediate housing 620, and a second exhaust pipe 630. The sum of the volumes of the second intake pipe 610, the second intermediate housing 620, and the second exhaust pipe 630 is V3, and the discharge volume of the low-pressure compression chamber 111 is C1, satisfying: V3 ≥ 0.2C1. For example, V3 = 0.4C1, V3 = 0.8C1, V3 = 1.2C1, V3 = 1.5C1. Since the low-pressure compression chamber 111 exists in both intake and compression states, the refrigerant supplied by the second enthalpy-increasing component 600 to the low-pressure compression chamber 111 is intermittent, resulting in a short actual refrigerant replenishment time. If V3 is less than 0.2C1, the volume of the second enthalpy-increasing component 600 is too small, leading to insufficient refrigerant replenishment and hindering its effectiveness. Therefore, a reasonable design of the relationship between the volume of the second enthalpy-increasing component 600 and the displacement of the low-pressure compression chamber 111 is crucial. This design satisfies the required refrigerant replenishment while minimizing pulsation during the replenishment process, thereby improving the stability of the compressor 1000's operation and reducing its vibration and noise.

[0046] In another embodiment of the present invention, the second enthalpy-increasing component 600 can also be connected to the high-pressure compression chamber 161, and the second enthalpy-increasing component 600 is used to supply refrigerant into the high-pressure compression chamber 161. The displacement of the high-pressure compression chamber 161 is C2, satisfying V3 ≥ 0.2C2, for example, V3 = 0.4C2, V3 = 0.8C2, V3 = 1.2C2, V3 = 1.5C2. Since both intake and compression states exist within the high-pressure compression chamber 161, the second enthalpy-increasing component 600 intermittently replenishes the refrigerant when supplying it, resulting in a short actual replenishment time. If V3 is less than 0.2C2, the volume of the second enthalpy-increasing component 600 is too small, resulting in insufficient replenishment and making it difficult to achieve the desired replenishment effect. Therefore, by rationally designing the relationship between the volume of the second enthalpy-increasing component 600 and the displacement of the high-pressure compression chamber 161, the pulsation impact during the gas replenishment process can be reduced while meeting the gas replenishment requirements, as well as the vibration and noise of the compressor 1000, thereby improving the stability of the compressor 1000's operation.

[0047] In embodiments of the present invention, the maximum diameter of the cross-section of the liquid receiver 300 is greater than or equal to the maximum diameter of the cross-section of the first intermediate housing 520. Since the total amount of refrigerant in the refrigeration system is usually constant, and the first enthalpy-increasing component 500 mainly functions as a gas replenishment unit while the liquid receiver 300 is used for gas intake, the volume of the first intermediate housing 520 does not need to be too large. If the diameter of the cross-section of the first intermediate housing 520 is too large, i.e., the volume of the first intermediate housing 520 is too large, the density of the refrigerant in the second intermediate housing 620 decreases, resulting in insufficient gas replenishment and an inability to effectively reduce the temperature of the refrigerant in the intermediate cavity 194, leading to increased power consumption when the high-pressure compression chamber 161 compresses the refrigerant. Therefore, rationally designing the relationship between the maximum diameter of the cross-section of the liquid receiver 300 and the maximum diameter of the cross-section of the first intermediate housing 520 can improve the overheating situation of the refrigerant entering the high-pressure compression chamber 161 and increase the intake volume. Simultaneously, it can reduce the volume of the first enthalpy-increasing component 500, making the compressor 1000 more compact and reducing costs. It also allows the center of gravity of the first enthalpy-increasing component 500 to be closer to the center of the compressor 1000, reducing rotational vibration and noise.

[0048] In embodiments of the present invention, the maximum diameter of the cross-section of the liquid receiver 300 is greater than or equal to the maximum diameter of the cross-section of the second intermediate housing 620. If the diameter of the cross-section of the second intermediate housing 620 is too large, i.e., the volume of the second intermediate housing 620 is too large, the density of the refrigerant in the second intermediate housing 620 decreases. Furthermore, the refrigerant delivery from the second enthalpy-increasing component 600 to the low-pressure compression chamber 111 or the high-pressure compression chamber 161 is intermittent, with a short delivery time. An excessively large diameter of the cross-section of the second intermediate housing 620 can easily lead to insufficient refrigerant delivery. Therefore, by rationally designing the relationship between the maximum diameter of the cross-section of the liquid receiver 300 and the maximum diameter of the cross-section of the second intermediate housing 620, the refrigerant delivery of the second enthalpy-increasing component 600 can be ensured. Simultaneously, the volume of the second enthalpy-increasing component 600 can be reduced, making the compressor 1000 more compact and reducing costs. It also allows the center of gravity of the second enthalpy-increasing component 600 to be closer to the center of the compressor 1000, reducing rotational vibration and noise.

[0049] In embodiments of the present invention, the ratio of the sum of the volumes V1 of the first intake pipe 510, the first intermediate housing 520, and the first exhaust pipe 530 to the minimum flow area S1 of the first intake pipe 510 is a1, satisfying 13 ≥ a1 ≥ 1.2, for example, a1 = 1.5, a1 = 2, a1 = 5, a1 = 8, a1 = 12. If a1 is less than 1.2, that is, the volume of the first enthalpy-increasing component 500 is too small or the minimum flow area of ​​the first intake pipe 510 is too large, it is easy to cause pressure fluctuations in the refrigerant, reduce the enthalpy-increasing effect, and increase the noise of the compressor 1000 during operation. If a1 is greater than 13, meaning the volume of the first enthalpy-increasing component 500 is too large or the minimum flow area of ​​the first intake pipe 510 is too small, when the volume of the first enthalpy-increasing component 500 is too large, the density of the refrigerant in the second intermediate shell 620 decreases, resulting in insufficient gas supply and an inability to effectively reduce the temperature of the refrigerant in the intermediate cavity 194, leading to increased power consumption when the high-pressure compression chamber 161 compresses the refrigerant. When the minimum flow area of ​​the first intake pipe 510 is too small, the intake resistance is high, leading to increased flow loss. Therefore, rationally designing the relationship between the volume of the first enthalpy-increasing component 500 and the minimum flow area of ​​the first intake pipe 510 can reduce pulsation and noise, improve the situation of high intake resistance and increased flow loss, and thus improve the working performance of the compressor 1000.

[0050] In embodiments of the present invention, the ratio of the sum of the volumes of the second intake pipe 610, the second intermediate housing 620, and the second exhaust pipe 630 (V2) to the minimum flow area S2 of the second intake pipe 610 is a2, satisfying 13 ≥ a2 ≥ 1.2, for example, a2 = 1.5, a2 = 2, a2 ​​= 5, a2 = 8, a2 = 12. If a2 is less than 1.2, that is, the volume of the second enthalpy-enhancing component 600 is too small or the minimum flow area of ​​the second intake pipe 610 is too large, it is easy to cause pressure fluctuations in the refrigerant, reduce the enthalpy-enhancing effect, and increase the noise of the compressor 1000 during operation. If a2 is greater than 13, meaning the volume of the second enthalpy-increasing component 600 is too large or the minimum flow area of ​​the second intake pipe 610 is too small, when the volume of the second enthalpy-increasing component 600 is too large, the density of the refrigerant in the second intermediate shell 620 decreases, resulting in insufficient gas supply and an inability to effectively reduce the temperature of the refrigerant in the intermediate cavity 194, leading to increased power consumption when the high-pressure compression chamber 161 compresses the refrigerant. When the minimum flow area of ​​the second intake pipe 610 is too small, the intake resistance is high, leading to increased flow loss. Therefore, rationally designing the relationship between the volume of the second enthalpy-increasing component 600 and the minimum flow area of ​​the second intake pipe 610 can reduce pulsation and noise, improve the situation of high intake resistance and increased flow loss, and thus improve the working performance of the compressor 1000.

[0051] Reference Figure 2 and Figure 3As shown, in an embodiment of the present invention, the partition member 190 is provided with a connected intermediate cavity 194 and a second channel. The first exhaust pipe 530 of the first enthalpy-increasing component 500 is inserted into the second channel, thereby supplying refrigerant to the intermediate cavity 194 through the second channel. The partition member 190 includes an upper partition 192 and a lower partition 193 connected to each other. The upper partition 192 is fixedly connected to the lower end face of the second cylinder 160, and the lower partition 193 is fixedly connected to the upper end face of the first cylinder 110. A groove is provided on the side of the upper partition 192 facing the lower partition 193, and the wall of the groove and the wall of the lower partition 193 facing the upper partition 192 together form the intermediate cavity 194. The use of two partitions facilitates manufacturing and improves production efficiency.

[0052] In another embodiment of the present invention, the intermediate cavity 194 may include multiple cavities connected by a connecting channel, and the exhaust port of the low-pressure compression cavity 111 is configured to exhaust exhaust to one of the cavities or to multiple cavities; that is, the volume of the intermediate cavity 194 refers to the sum of the volumes of all the cavities and the connecting channel. For example, the intermediate cavity 194 includes a first cavity 131 and a second cavity 191, 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. The second cavity 191 and the first cavity 131 are connected by a connecting channel to form an intermediate cavity 194. The intake pipe of the first enthalpy-increasing assembly 500 is inserted into the second channel. Therefore, the intermediate cavity 194 allows the refrigerant inside it to mix fully with the refrigerant of the first enthalpy-increasing assembly 500, reducing the problem of excessive pulsation when the two refrigerants are mixed and improving the mixing efficiency.

[0053] 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.

[0054] Reference Figure 2As 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.

[0055] In embodiments of the present invention, multiple low-pressure compression chambers 111 are provided, and the exhaust ports of the multiple low-pressure compression chambers 111 are all connected to the intermediate chamber 194. 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 the multiple high-pressure compression chambers 161 are all connected to the intermediate chamber 194, 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.

[0056] 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.

[0057] 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. By employing the compressor 1000 of the above embodiments, the exhaust port of the low-pressure compression chamber 111 of the pump assembly 100 of the compressor 1000 is connected to the inlet of the high-pressure compression chamber 161 through an intermediate chamber 194. Therefore, the refrigerant can be compressed in the low-pressure compression chamber 111 and discharged to the intermediate chamber 194, and then enter the high-pressure compression chamber 161 for secondary compression, thereby increasing the pressure of the finally discharged refrigerant. This is beneficial for improving the heating capacity of the compressor 1000 in low-temperature environments or the cooling capacity in high-temperature environments. The first enthalpy-increasing component 500 is connected to the intermediate cavity 194 and can supply refrigerant to the intermediate cavity 194. Therefore, the refrigerant discharged from the low-pressure compression chamber 111 to the intermediate cavity 194 and the refrigerant discharged from the first enthalpy-increasing component 500 mix in the intermediate cavity 194, which can reduce the temperature of the refrigerant, improve the problem of increased power consumption caused by overheating of the high-pressure compression chamber 161, and also increase the refrigerant intake volume. The volume of the first enthalpy-increasing component 500 is the sum of the volume of its first intake pipe 510, the volume of its first intermediate shell 520, and the volume of its first exhaust pipe 530, that is, the volume of the first enthalpy-increasing component 500 is V1, and the volume of the intermediate cavity 194 is V2, satisfying: V1≥0.5V2. If V1 is less than 0.5V2, the volume of the first enthalpy-increasing component 500 is too small, the refrigerant replenishment is insufficient, the pulsation during replenishment increases, resulting in increased vibration amplitude and noise of the compressor 1000. Therefore, by rationally designing the ratio of the volume of the first enthalpy-increasing component 500 to the volume of the intermediate cavity 194, the pulsation during gas replenishment can be reduced, thereby improving the performance of the compressor 1000.

[0058] 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.

[0059] 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 body 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 air inlet of the high-pressure compression chamber through the intermediate chamber. A first enthalpy-increasing component is connected to the intermediate cavity and used to supply refrigerant to the intermediate cavity. The first enthalpy-increasing component includes a first intake pipe, a first intermediate housing, and a first exhaust pipe. Wherein, the sum of the volume of the first intake pipe, the volume of the first intermediate shell and the volume of the first exhaust pipe is V1, and the volume of the intermediate cavity is V2, satisfying: V1≥0.5V2; The compressor further includes a second enthalpy-increasing component, which is connected to the low-pressure compression chamber or the high-pressure compression chamber and is used to supply refrigerant to the low-pressure compression chamber or the high-pressure compression chamber. The second enthalpy-increasing component includes a second intake pipe, a second intermediate shell, and a second exhaust pipe. The sum of the volumes of the second intake pipe, the second intermediate shell, and the second exhaust pipe is V3. The displacement of the low-pressure compression chamber is C1, and the displacement of the high-pressure compression chamber is C2, satisfying: V3 ≥ 0.2C1; or V3 ≥ 0.2C2. The ratio of the sum of the volumes of the second intake pipe, the second intermediate shell, and the second exhaust pipe, V2, to the minimum flow area S2 of the second intake pipe is a2, satisfying: 13 ≥ a2 ≥ 1.

2.

2. The compressor according to claim 1, characterized in that: The compressor also includes a liquid receiver connected to the low-pressure compression chamber, wherein the maximum diameter of the liquid receiver's cross-section is greater than or equal to the maximum diameter of the cross-section of the second intermediate housing.

3. The compressor according to claim 1, characterized in that: The ratio of the sum of the volumes of the first intake pipe, the first intermediate shell, and the first exhaust pipe, V1, to the minimum flow area S1 of the first intake pipe is a1, which satisfies: 13 ≥ a1 ≥ 1.

2.

4. The compressor according to claim 1, characterized in that: The compressor also includes a liquid receiver connected to the low-pressure compression chamber, wherein the maximum diameter of the liquid receiver's cross-section is greater than or equal to the maximum diameter of the cross-section of the first intermediate housing.

5. 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.

6. The compressor according to claim 5, characterized in that: The pump assembly includes an upper bearing, a second cylinder, a partition, a first cylinder, and a lower bearing connected in sequence, with one of the plurality of cavities formed within the partition.

7. The compressor according to claim 6, characterized in that: The partition includes an upper partition and a lower partition that are fixedly connected. The upper partition is fixedly connected to the lower end face of the second cylinder, and the lower partition is fixedly connected to the upper end face of the first cylinder. It is also provided with a first valve seat located in the cavity, and the first valve seat is provided with an exhaust port of the low-pressure compression chamber.

8. The compressor according to claim 6, characterized in that: The pump assembly also includes a lower muffler connected to the lower bearing. The lower bearing is provided with a second valve seat, and the second valve seat is provided with an exhaust port of the low-pressure compression chamber. The lower muffler and the lower bearing together form another of the plurality of chambers.

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

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