CN211777997U - High-efficiency compressor, air conditioner, heat pump water heater and refrigerating device - Google Patents
High-efficiency compressor, air conditioner, heat pump water heater and refrigerating device Download PDFInfo
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- CN211777997U CN211777997U CN201922045929.7U CN201922045929U CN211777997U CN 211777997 U CN211777997 U CN 211777997U CN 201922045929 U CN201922045929 U CN 201922045929U CN 211777997 U CN211777997 U CN 211777997U
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Abstract
The utility model provides a high-efficient compressor and air conditioner, heat pump water heater, refrigerating plant, relates to compressor technical field, and this high-efficient compressor includes the casing, the lateral wall of casing is provided with the tonifying qi enthalpy gain pipe, the inside of casing has set gradually motor element, one-level compression portion, second grade compression portion by last under to, the exhaust passage volume of one-level compression portion is V1, the working volume of one-level compression portion is V2, the exhaust passage volume of second grade compression portion is V3, the working volume of second grade compression portion is V4. The utility model discloses a rational design one-level compression portion's exhaust passage volume V1, the working volume V2 of one-level compression portion, the exhaust passage volume V3 of second grade compression portion and the working volume V4 of second grade compression portion to when it satisfies 0.60 ≦ when (V2V 1)/(V4V 3) is ≦ 1.0, can effectual reduction refrigerant flow loss, improve compressor performance.
Description
Technical Field
The utility model relates to a compressor technical field especially relates to a high-efficient compressor and air conditioner, heat pump water heater, refrigerating plant.
Background
When a refrigerant is subjected to a refrigeration cycle, the refrigerant has a large pressure difference due to its physical properties, and a flow loss of the refrigerant in the compressor is relatively large, which is one of the main factors that the performance of the compressor is relatively low. One of the current techniques for reducing flow losses is to change the volume of the flow channel, mainly as follows:
patent No. 201310222509.6 discloses a three-cylinder rotor compressor, the compression volume of the first-stage compression mechanism is the first-stage compression volume V1, the compression volume of the second-stage compression mechanism is the second-stage compression volume V2, the compression volume of the third-stage compression mechanism is the third-stage compression volume V3, and V1 > V2 > V3.
Patent No. 201310655852.X discloses a compression device of a rotary compressor, which includes a cylinder, and an upper bearing and a lower bearing defining a chamber together with the cylinder; a piston defining a working space with the inner wall of the chamber; the first sliding sheet and the second sliding sheet divide the working space into a first working chamber and a second working chamber; a first suction port and a second suction port both communicating with the working space, wherein V1 and V2 are the maximum volumes of the first and second working chambers, respectively, and S1 and S2 are the opening areas of the first and second suction ports, respectively.
The patent No. 201410228879.5 discloses a double-stage enthalpy-increasing compressor, and the flange is provided with a middle cavity under, the middle cavity includes first cavity and second cavity, and the volume of first cavity is V1, the volume of second cavity is V2, and wherein, 0.5 is less than or equal to V1/V2 is less than or equal to 1.
The patent No. 201310134772.X discloses a double-stage enthalpy-increasing compressor, which comprises a low-pressure stage compression part, a high-pressure stage compression part and an enthalpy-increasing component, wherein the ratio of the area S2 of a high-pressure stage compression part exhaust port to the area S1 of a low-pressure stage exhaust port is S2/S1, the ratio of the working volume V2 of the high-pressure stage compression part to the working volume V1 of the low-pressure stage compression part is V2/V1, and the S2/S1 is set to be 0.85-1.2 times of the V2/V1.
Patent No. 201610108227.7 discloses a double vane compressor with two volumes in a single cylinder, the relationship between the volume V1 of the first compression chamber and the volume V2 of the second compression chamber: 1.1< V1/V2< 1.5.
The patent No. 201610025248.2 discloses a rolling rotor type two-stage compressor, which comprises a first-stage cylinder, a first-stage exhaust cavity, an enthalpy increasing component and a second-stage cylinder, wherein the first-stage exhaust cavity is communicated with an exhaust port of the first-stage cylinder and communicated with an air suction port of the second-stage cylinder and an outlet of the enthalpy increasing component through an intermediate flow channel, the displacement of the first-stage cylinder is V1, the volume of the first-stage exhaust cavity is V2, the sum of the volume of the first-stage exhaust cavity, the volume of the enthalpy increasing component cavity and the volume of the intermediate flow channel is a medium-pressure cavity volume which is marked as V5, wherein 1< V2: V1<7, and 3< V5: V1< 15.
The patent No. 201811317141.0 discloses a rotor compressor, a first compression cylinder is disposed in the first cavity, the volume of the compression cavity of the first compression cylinder is V1, the volume of the second cavity is V2, the volume of the first cavity is V3, wherein 2V1 is equal to or more than V2 and equal to or less than 3V1, and 5V1 is equal to or more than V2+ V3 and equal to or less than 10V 1.
Patent No. 201320067130.8 discloses a two-stage rotary compressor, the volume V1 of the high-pressure stage discharge passage is not more than 0.8 times the volume V2 of the low-pressure stage discharge passage and not less than 0.5 times.
The refrigerants used in the prior art are mainly R410A, R32, R134a and the like, and the applied compressors are mainly single-stage single-cylinder, single-stage double-cylinder and three-cylinder compressors, so the designed parameters are not completely suitable for the CO2 double-stage enthalpy-increasing compressor, and the improvement range of the performance of the compressor is limited.
SUMMERY OF THE UTILITY MODEL
One of the purposes of the utility model is to avoid the weak point among the prior art and provide a high-efficient compressor, this high-efficient compressor can reduce the refrigerant flow loss, improves the compressor performance.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a high-efficient compressor, which comprises a housin, the lateral wall of casing is provided with the tonifying qi enthalpy gain pipe, the inside of casing is by last motor element, one-level compression portion, second grade compression portion of having set gradually under to, the exhaust passage volume of one-level compression portion is V1, the working volume of one-level compression portion is V2, the exhaust passage volume of second grade compression portion is V3, the working volume of second grade compression portion is V4, satisfies following relational expression: 0.60-1.0 percent (V2/V1)/(V4/V3). By reasonably designing the discharge channel volume V1 of the first-stage compression part, the working volume V2 of the first-stage compression part, the discharge channel volume V3 of the second-stage compression part and the working volume V4 of the second-stage compression part, when the requirements of the discharge channel volume V3 of the second-stage compression part and the working volume V4 of the second-stage compression part are more than or equal to 0.60 and less than or equal to (V2/V1)/(V4/V3) and less than or equal to 1.0, the flow loss of the.
Further, the exhaust passage volume of the first-stage compression part is V1, the displacement volume of the first-stage compression part is V2, the exhaust passage volume of the second-stage compression part is V3, and the displacement volume of the second-stage compression part is V4, which satisfy the following relations: 0.60-0.70 (V2/V1)/(V4/V3). When the discharge passage volume V1 of the first-stage compression part, the working volume V2 of the first-stage compression part, the discharge passage volume V3 of the second-stage compression part and the working volume V4 of the second-stage compression part satisfy 0.60 ≦ (V2/V1)/(V4/V3) ≦ 0.70, the effect of reducing the refrigerant flow loss is optimal, and the improvement of the compressor performance is also optimal.
Furthermore, the tonifying qi increases enthalpy pipe with the inside of casing the top cavity intercommunication of one-level compression portion, one-level compression portion with the inside of casing the top cavity intercommunication of one-level compression portion, the top of casing is provided with the one-level blast pipe, the lateral wall of casing is provided with one-level breathing pipe, second grade blast pipe, the one-level breathing pipe with the inside intercommunication of one-level compression portion, the second grade breathing pipe with the inside intercommunication of second grade compression portion, the second grade blast pipe with the inside intercommunication of second grade compression portion.
Further, one-level compression portion with be provided with the baffle between the second grade compression portion, one-level compression portion includes the flange, and fixes the one-level cylinder of the bottom of going up the flange, and set up and be in the one-level roller of the inside of one-level cylinder, and with one-level roller complex one-level gleitbretter, second grade compression portion includes the second grade cylinder, and sets up the second grade roller of the inside of second grade cylinder, and with second grade roller complex second grade gleitbretter, and fix the lower flange of the bottom of second grade cylinder, the bottom of lower flange is provided with lower flange apron.
Further, go up the flange and seted up the flange cavity, the volume of going up the flange cavity is V11, upward set up the flange gas vent in the flange cavity, the volume of going up the flange gas vent is V12, one-level cylinder gas vent has been seted up to the one-level cylinder, the volume of one-level cylinder gas vent is V13, go up the flange gas vent with one-level cylinder gas vent intercommunication, go up the flange except that go up the flange cavity extremely the volume of all clearances of one-level blast pipe is V14, satisfies following relational expression: v1 ═ V11+ V12+ V13+ V14.
Further, the second grade cylinder has seted up the second grade cylinder gas vent, the volume of second grade cylinder gas vent is V31, lower flange cavity has been seted up to the lower flange, lower flange cavity with the volume of second grade blast pipe is V32, set up the lower flange gas vent in the lower flange cavity, the volume of lower flange gas vent is V33, the lower flange gas vent with the second grade cylinder gas vent intercommunication, the volume of tonifying qi enthalpy-increasing pipe is V34, satisfies the following relational expression: v3 ═ V31+ V32+ V33+ V34.
Further, the motor assembly comprises a motor stator, a motor rotor matched with the motor stator, and a crankshaft fixed with the motor rotor, and the motor assembly drives the first-stage compression part and the second-stage compression part through the crankshaft.
The utility model has the advantages that: the utility model discloses a high-efficient compressor, which comprises a housin, the lateral wall of casing is provided with the tonifying qi enthalpy gain pipe, the inside of casing is by last motor element, one-level compression portion, second grade compression portion of having set gradually under to, the exhaust passage volume of one-level compression portion is V1, the working volume of one-level compression portion is V2, the exhaust passage volume of second grade compression portion is V3, the working volume of second grade compression portion is V4, satisfies following relational expression: 0.60-1.0 percent (V2/V1)/(V4/V3). The utility model discloses a rational design one-level compression portion's exhaust passage volume V1, the working volume V2 of one-level compression portion, the exhaust passage volume V3 of second grade compression portion and the working volume V4 of second grade compression portion to when it satisfies 0.60 ≦ when (V2V 1)/(V4V 3) is ≦ 1.0, can effectual reduction refrigerant flow loss, improve compressor performance.
The second object of the utility model is to avoid the weak point among the prior art and provide an air conditioner, this air conditioner uses foretell high-efficient compressor, because the exhaust passage volume V1 through rational design one-level compression portion, the working volume V2 of one-level compression portion, the exhaust passage volume V3 of second grade compression portion and the working volume V4 of second grade compression portion, and when it satisfies 0.60 ≦ when (V2/V1)/(V4/V3) ≦ 1.0, can effectual reduction refrigerant flow loss, improve compressor performance.
The utility model discloses a three lies in avoiding the weak point among the prior art and providing a heat pump water heater, this heat pump water heater uses foretell high-efficient compressor, because the exhaust passage volume V1 through rational design one-level compression portion, the working volume V2 of one-level compression portion, the exhaust passage volume V3 of second grade compression portion and the working volume V4 of second grade compression portion, and when it satisfies 0.60 ≦ when (V2/V1)/(V4/V3) is ≦ 1.0, can effectual reduction refrigerant flow loss, improve compressor performance.
The fourth object of the present invention is to avoid the deficiency in the prior art and provide a refrigerating plant, this refrigerating plant uses foretell high-efficient compressor, because the exhaust passage volume V1 through rational design one-level compression portion, the working volume V2 of one-level compression portion, the exhaust passage volume V3 of second grade compression portion and the working volume V4 of second grade compression portion, and when it satisfied 0.60 ≦ V2/V1)/(V4/V3) ≦ 1.0, can effectual reduction refrigerant flow loss, improve compressor performance.
Drawings
The invention is further described with the aid of the accompanying drawings, in which, however, the embodiments do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived from the following drawings without inventive effort.
Fig. 1 is a sectional view of the overall structure of a high efficiency compressor of the present invention.
Fig. 2 is a perspective view of the whole structure of the upper flange of the high efficiency compressor of the present invention.
Fig. 3 is a perspective view of the overall structure of the one-stage cylinder of the high efficiency compressor of the present invention.
Fig. 4 is a perspective view of the overall structure of the second stage cylinder of the high efficiency compressor of the present invention.
Fig. 5 is a perspective view of the overall structure of the lower flange of the high efficiency compressor of the present invention.
Fig. 6 is a coefficient of performance (COP) curve of a high efficiency compressor according to the present invention.
The figure includes:
the device comprises a shell 1, a gas supplementing and enthalpy increasing pipe 2, a motor component 3, a first-stage compression part 4, a second-stage compression part 5, a first-stage exhaust pipe 6, a first-stage air suction pipe 7, a second-stage air suction pipe 8, a second-stage exhaust pipe 9, a partition plate 10, an upper flange 11, a first-stage air cylinder 12, a first-stage roller 13, a first-stage slip sheet 14, a second-stage air cylinder 15, a second-stage roller 16, a second-stage slip sheet 17, a lower flange 18, a lower flange cover plate 19, an upper flange cavity 20, an upper flange air exhaust port 21, a first-stage air cylinder air exhaust port 22, a second-stage air cylinder air exhaust port 23, a lower flange cavity 24, a lower flange air exhaust port 25, a motor stator 26, a motor rotor 27.
Detailed Description
The invention will be further described with reference to the following examples.
Example 1
The high-efficiency compressor of this embodiment, as shown in fig. 1-5, including casing 1, casing 1's lateral wall is provided with tonifying qi enthalpy gain pipe 2, casing 1's inside has set gradually motor element 3, one-level compression portion 4, second grade compression portion 5 by last under to, the exhaust passage volume of one-level compression portion 4 is V1, the working volume of one-level compression portion 4 is V2, the exhaust passage volume of second grade compression portion 5 is V3, the working volume of second grade compression portion 5 is V4, satisfies following relational expression: 0.60-1.0 percent (V2/V1)/(V4/V3). By reasonably designing the discharge passage volume V1 of the first-stage compression part 4, the working volume V2 of the first-stage compression part 4, the discharge passage volume V3 of the second-stage compression part 5 and the working volume V4 of the second-stage compression part 5, when the requirements are that (V2/V1)/(V4/V3) is more than or equal to 0.60 and less than or equal to 1.0, the flow loss of the refrigerant can be effectively reduced, and the performance of the compressor is improved.
The discharge passage volume of the first-stage compression part 4 is V1, the displacement volume of the first-stage compression part 4 is V2, the discharge passage volume of the second-stage compression part 5 is V3, the displacement volume of the second-stage compression part 5 is V4, and the following relational expression is satisfied: 0.60-0.70 (V2/V1)/(V4/V3). When the discharge passage volume V1 of the first-stage compression part 4, the working volume V2 of the first-stage compression part 4, the discharge passage volume V3 of the second-stage compression part 5 and the working volume V4 of the second-stage compression part 5 satisfy 0.60 ≦ (V2/V1)/(V4/V3) ≦ 0.70, the effect of reducing the refrigerant flow loss is optimal, and the improvement of the compressor performance is also optimal.
The utility model discloses a solar energy heat pump air conditioner, including casing 1, tonifying qi enthalpy gain pipe 2 with the inside of casing 1 the top cavity intercommunication of one-level compression portion 4, one-level compression portion 4 with the inside of casing 1 the top cavity intercommunication of one-level compression portion 4, the top of casing 1 is provided with one-level blast pipe 6, the lateral wall of casing 1 is provided with one-level breathing pipe 7, second grade breathing pipe 8, second grade blast pipe 9, one-level breathing pipe 7 with the inside intercommunication of one-level compression portion 4, second grade breathing pipe 8 with the inside intercommunication of second grade compression portion 5, second grade blast pipe 9 with the inside intercommunication of second grade compression portion 5.
One-level compression portion 4 with be provided with baffle 10 between the second stage compression portion 5, one-level compression portion 4 includes flange 11, and fixes the one-level cylinder 12 of the bottom of last flange 11, and set up and be in the one-level roller 13 of the inside of one-level cylinder 12, and with one-level roller 13 complex one-level gleitbretter 14, second stage compression portion 5 includes second stage cylinder 15, and sets up the second stage roller 16 of the inside of second stage cylinder 15, and with second stage roller 16 complex second level gleitbretter 17, and fix the lower flange 18 of the bottom of second stage cylinder 15, the bottom of lower flange 18 is provided with lower flange apron 19.
Go up flange 11 and seted up flange cavity 20, the volume of going up flange cavity 20 is V11, upward set up flange gas vent 21 in the flange cavity 20, the volume of going up flange gas vent 21 is V12, one-level cylinder gas vent 22 has been seted up to one-level cylinder 12, the volume of one-level cylinder gas vent 22 is V13, go up flange gas vent 21 with one-level cylinder gas vent 22 intercommunication, go up flange 11 except go up flange cavity 20 to the volume of all gaps of one-level blast pipe 6 (including the volume of one-level blast pipe 6) is V14, satisfies following relational expression: v1 ═ V11+ V12+ V13+ V14.
The second grade cylinder 15 has seted up second grade cylinder gas vent 23, the volume of second grade cylinder gas vent 23 is V31, lower flange cavity 24 has been seted up to lower flange 18, lower flange cavity 24 with the volume of second grade blast pipe 9 is V32, lower flange gas vent 25 has been seted up in the lower flange cavity 24, the volume of lower flange gas vent 25 is V33, lower flange gas vent 25 with second grade cylinder gas vent 23 communicates, the volume of tonifying qi enthalpy-increasing pipe 2 is V34, satisfies the following relational expression: v3 ═ V31+ V32+ V33+ V34.
The motor assembly 3 comprises a motor stator 26, a motor rotor 27 matched with the motor stator 26, and a crankshaft 28 fixed with the motor rotor 27, and the motor assembly 3 drives the first-stage compression part 4 and the second-stage compression part 5 through the crankshaft 28.
The secondary exhaust pipe 9 of the high-efficiency compressor is communicated with an external gas cooler 29, the gas cooler 29 is communicated with an economizer 30, the economizer 30 is communicated with an air-supplementing enthalpy-increasing pipe 2, meanwhile, the economizer 30 is communicated with a throttling mechanism 31, the throttling mechanism 31 is communicated with an evaporator 32, the evaporator 32 is communicated with a primary air suction pipe 7, the primary exhaust pipe 6 is communicated with an intercooler 33, and the intercooler 33 is communicated with a secondary air suction pipe 8.
The coefficient of performance (COP) curve of the compressor is shown in FIG. 6, and it can be seen that when (V2/V1) is set to be 0.5-1.0 times of (V4/V3), the COP of the compressor is better, and when the COP of the compressor is further set to be 0.60-0.70 times, the COP of the compressor is better.
The working principle is as follows: when the compressor is electrified and rotates at a high speed, refrigerant compressed at the first stage compression part 4 firstly enters the position of the motor component 3 of the compressor shell 1 to form middle back pressure, the refrigerant enters the intercooler 33 through the motor rotor 27, the motor stator 26 and the first stage exhaust pipe 6 in sequence to cool medium temperature and medium pressure refrigerant after the first stage compression, then enters the second stage compression part 5 through the second stage air suction pipe 8 to perform second stage compression, finally enters the gas cooler 29 through the second stage exhaust pipe 9 to perform heat exchange, then the refrigerant enters the economizer 30, one part of the refrigerant flashes into gaseous refrigerant, is sprayed into the position of the motor component 3 of the compressor shell 1 through the air supplementing enthalpy increasing pipe 2, the other part of the refrigerant throttles and reduces pressure through the throttling mechanism 31, the refrigerant absorbs heat through the evaporator 32, and finally the low temperature and low pressure gaseous refrigerant enters the first stage compression part 4 through the first stage air suction pipe 7, a refrigeration cycle is formed.
Example 2
This embodiment provides an air conditioner using the high efficiency compressor described in embodiment 1, since the discharge passage volume V1 of the first compression part 4, the working volume V2 of the first compression part 4, the discharge passage volume V3 of the second compression part 5 and the working volume V4 of the second compression part 5 are properly designed, and when it satisfies 0.60 ≦ (V2/V1)/(V4/V3) ≦ 1.0, the refrigerant flow loss can be effectively reduced, and the compressor performance can be improved.
Example 3
This embodiment provides a heat pump water heater using the high efficiency compressor described in embodiment 1, since the discharge channel volume V1 of the first compression part 4, the working volume V2 of the first compression part 4, the discharge channel volume V3 of the second compression part 5 and the working volume V4 of the second compression part 5 are properly designed, and when it satisfies 0.60 ≦ (V2/V1)/(V4/V3) ≦ 1.0, the refrigerant flow loss can be effectively reduced, and the compressor performance can be improved.
Example 4
This embodiment provides a refrigerating apparatus using the high-efficiency compressor described in embodiment 1, which can effectively reduce the refrigerant flow loss and improve the compressor performance by properly designing the discharge passage volume V1 of the first-stage compression part 4, the working volume V2 of the first-stage compression part 4, the discharge passage volume V3 of the second-stage compression part 5 and the working volume V4 of the second-stage compression part 5, and when it satisfies 0.60 ≦ (V2/V1)/(V4/V3) ≦ 1.0.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. The utility model provides a high-efficient compressor, includes the casing, the lateral wall of casing is provided with tonifying qi enthalpy-increasing pipe, its characterized in that: the inside of casing has set gradually motor element, one-level compression portion, second grade compression portion by last under to, the exhaust passage volume of one-level compression portion is V1, the working volume of one-level compression portion is V2, the exhaust passage volume of second grade compression portion is V3, the working volume of second grade compression portion is V4, satisfies following relational expression: 0.60-1.0 percent (V2/V1)/(V4/V3).
2. A high efficiency compressor as set forth in claim 1, wherein: the exhaust passage volume of the first-stage compression part is V1, the working volume of the first-stage compression part is V2, the exhaust passage volume of the second-stage compression part is V3, the working volume of the second-stage compression part is V4, and the following relational expression is satisfied: 0.60-0.70 (V2/V1)/(V4/V3).
3. A high efficiency compressor as claimed in claim 1 or 2, wherein: the utility model discloses a casing, including casing, tonifying qi enthalpy gain pipe, one-level compression portion, casing, lateral wall, one-level breathing pipe, second grade blast pipe, the one-level breathing pipe with the inside of casing the top cavity intercommunication of one-level compression portion, the one-level compression portion with the inside of casing the top cavity intercommunication of one-level compression portion, the top of casing is provided with the one-level blast pipe, the lateral wall of casing is provided with one-level breathing pipe, second grade blast pipe, the one-level breathing pipe with the inside intercommunication of one-level compression portion.
4. A high efficiency compressor as set forth in claim 3, wherein: the one-level compression portion with be provided with the baffle between the second grade compression portion, the one-level compression portion includes the flange, and fixes the one-level cylinder of the bottom of last flange, and set up and be in the one-level roller of the inside of one-level cylinder, and with one-level roller complex one-level gleitbretter, the second grade compression portion includes the second grade cylinder, and sets up the second grade roller of the inside of second grade cylinder, and with second grade roller complex second grade gleitbretter, and fix the lower flange of the bottom of second grade cylinder, the bottom of lower flange is provided with lower flange apron.
5. A high efficiency compressor as set forth in claim 4, wherein: the upper flange has been seted up the upper flange cavity, the volume of upper flange cavity is V11, set up the upper flange gas vent in the upper flange cavity, the volume of upper flange gas vent is V12, one-level cylinder gas vent has been seted up to the one-level cylinder, the volume of one-level cylinder gas vent is V13, the upper flange gas vent with one-level cylinder gas vent intercommunication, the upper flange removes the upper flange cavity extremely the volume of all gaps of one-level blast pipe is V14, satisfies following relational expression: v1 ═ V11+ V12+ V13+ V14.
6. A high efficiency compressor as set forth in claim 4, wherein: the second grade cylinder has seted up the second grade cylinder gas vent, the volume of second grade cylinder gas vent is V31, lower flange cavity has been seted up to the lower flange, lower flange cavity with the volume of second grade blast pipe is V32, set up the lower flange gas vent in the lower flange cavity, the volume of lower flange gas vent is V33, the lower flange gas vent with second grade cylinder gas vent intercommunication, the volume of tonifying qi enthalpy-increasing pipe is V34, satisfies following relational expression: v3 ═ V31+ V32+ V33+ V34.
7. A high efficiency compressor as set forth in claim 1, wherein: the motor assembly comprises a motor stator, a motor rotor matched with the motor stator and a crankshaft fixed with the motor rotor, and the motor assembly drives the first-stage compression part and the second-stage compression part through the crankshaft.
8. An air conditioner, characterized in that: comprising the high efficiency compressor of any one of claims 1 to 7.
9. A heat pump water heater, its characterized in that: comprising the high efficiency compressor of any one of claims 1 to 7.
10. A refrigeration device, characterized in that: comprising the high efficiency compressor of any one of claims 1 to 7.
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