JP6595700B2 - Compressor and heat exchange system - Google Patents

Description

  The present invention relates to the field of heat exchange technology, and in particular, to a compressor and a heat exchange system.

In the existing technology, the amount of heating by the compressor is usually improved by using electric auxiliary heat, or the compressor having a function of increasing twin enthalpy is used to solve the problem of low heating capacity of the compressor at a low temperature. Have their own problems.
1. There is a problem of low energy efficiency in the method of improving the heat generation amount of the compressor by using electric auxiliary heat.
2. When using a compressor with a twin enthalpy increase function, the compressor discharge cannot be adjusted, the adaptability to the compressor operating conditions is poor, and the heating capacity and energy efficiency of the compressor under low temperature conditions When the compressor is operated under normal conditions in a situation where the above is guaranteed, there is a problem of low energy efficiency.

  The main object of the present invention is to provide a compressor and a heat exchanging system that can solve the problem that the compressor in the existing technology cannot be operated in a variable capacity so that the heating capacity of the compressor is low and the energy efficiency is low.

  In order to achieve the above object, according to one aspect of the present invention, a crankshaft includes a first cylinder, a second cylinder, and a third cylinder that are sequentially arranged along the axial direction of the crankshaft. The first cylinder is a high pressure cylinder, the second cylinder and the third cylinder are low pressure cylinders, and the compressor further includes a variable displacement switching mechanism that controls unloading or loading of the third cylinder; The compressor has a full operation mode and a partial operation mode. When the compressor is in the full operation mode, the variable displacement switching mechanism loads the third cylinder under the action of the exhaust pressure of the compressor, When in partial operation mode, the variable displacement switching mechanism provides a compressor that unloads the third cylinder under the effect of the compressor supply pressure.

  Furthermore, the variable capacity switching mechanism has a pressure control unit that is selectively connected to an exhaust port of the compressor or an air supply port of the compressor, and the pressure control unit has a cooperative relationship between the lock component and the vane of the third cylinder. And when the pressure control unit is connected to the inlet of the compressor, the lock part and the vane of the third cylinder are locked so that the third cylinder is unloaded, and the pressure control unit is And a locking component for unlocking the vane of the third cylinder so as to load the third cylinder.

  The variable capacity switching mechanism further includes an elastic recovery element, the first end of the lock part is locked or unlocked with the vane, and the elastic recovery element is provided at the second end opposite to the first end of the lock part. The pressure control unit controls the pressure at the first end of the lock part.

  In addition, the variable capacity switching mechanism further includes a pressure stabilizing branch that has a first end in communication with the compressor inlet and a second end that provides pressure to the second end of the locking component.

  Further, the pressure control unit is provided on the first branch path, the first branch communicating with the air supply port of the compressor, the second branch controlling the pressure of the first end of the lock part, and the first branch. The first on-off valve for controlling connection / disconnection of the first branch path, the first end communicates with the exhaust port of the compressor, and the second end controls the pressure at the first end of the lock part. A second branch path to be controlled; and a second on-off valve provided on the second branch path for controlling connection / disconnection of the second branch path.

  Further, the compressor has a first air supply port connected to the exhaust port of the second cylinder, a mixer exhaust port connected to the air supply port of the first cylinder, and the second air supply port supplied with gas. It further includes a mixer that is a mouth.

  Furthermore, the compressor further includes a first partition plate provided between the second cylinder and the third cylinder.

  Furthermore, the first partition plate has a first partition plate cavity communicated with the exhaust port of the second cylinder, and the second cylinder has an external communication port communicated with the first partition plate cavity. The first air supply port of the mixer communicates with the first partition plate cavity through the external communication port, and when the compressor is in the partial operation mode, the air supply port of the second cylinder, the second cylinder The exhaust port, the first partition plate cavity, the external communication port of the second cylinder, the mixer, the air supply port of the first cylinder, and the exhaust port of the first cylinder are communicated in this order.

  Further, the third cylinder has a first central flow path isolated from the compression chamber of the third cylinder, and the compressor is provided between the first partition plate and the third cylinder, A second partition plate having a second partition plate communication hole for communicating the first central flow path of the third cylinder and the first partition plate cavity, and a second cylinder of the third cylinder And a first flange having a first flange cavity provided on the remote side and communicated with the exhaust port of the third cylinder and the first central flow path, wherein the compressor is in all operating modes. In this case, the second cylinder air inlet, the second cylinder exhaust outlet, the first partition plate cavity, the second cylinder external communication port, the mixer, the first cylinder air inlet, the first cylinder The exhaust outlets are communicated in order, and the third Air supply port and an exhaust port of third cylinder Linder, the first flange cavity, the first central channel, communicates with the first partition plate cavity through the second partition plate through hole.

  Further, the compressor further includes an enthalpy increasing member communicated with the air supply port of the first cylinder.

  Furthermore, the compressor includes a first partition plate provided between the second cylinder and the first cylinder, and a third partition plate provided between the first cylinder and the first partition plate. Further included.

  Further, the third partition plate has a third partition plate communication hole, the first partition plate has a first partition plate cavity communicating with the exhaust port of the second cylinder, and the first partition plate. The plate cavity communicates with the first cylinder air supply port via the third partition plate communication hole. When the compressor is in the partial operation mode, the second cylinder air supply port and the second cylinder air supply port The exhaust port, the first partition plate cavity, the third partition plate communication hole, the first cylinder air supply port, and the first cylinder exhaust port communicate with each other in this order.

  Further, the third cylinder has a first central flow path isolated from the compression chamber of the third cylinder, and the second cylinder is a second central flow path isolated from the compression chamber of the second cylinder. And the second central flow path communicates with the first partition cavity, and the compressor is provided between the second cylinder and the third cylinder, and the first cylinder of the third cylinder is provided. A second partition plate having a second partition plate communication hole for communicating the central flow channel of the second cylinder and the second central flow channel of the second cylinder, and a side of the third cylinder away from the second cylinder And a first flange having a first flange cavity communicated with the exhaust port of the third cylinder and the first central flow path, and when the compressor is in the full operation mode, 2 cylinder air inlet, 2nd cylinder The air port, the first partition plate cavity, the air supply port of the first cylinder, and the exhaust port of the first cylinder are communicated in order, and the air supply port of the third cylinder is the exhaust port of the third cylinder, One flange cavity, a first central flow path, and a second partition plate communication hole communicate with the second central flow path and the first partition plate cavity.

  According to another aspect of the present invention, a heat exchange system including the following compressor is provided.

  According to the technical solution of the present invention, by providing a variable displacement switching mechanism in the compressor, at least one cylinder is used or unloaded by the action of the variable displacement switching mechanism, and the compressor has a variable displacement switching function. And it can satisfy | fill the driving | running requirement on different conditions, can improve the heating capability of the compressor on different conditions, and can improve the total energy efficiency of a compressor effectively.

It is a figure which shows the operation principle of the heat exchange system in case the compressor in this invention is all operation modes. It is a figure which shows the operation principle of a heat exchange system, when the compressor in this invention is a partial operation mode. It is a figure which shows the operation state when the variable capacity switching mechanism and 3rd cylinder in this invention are locked. It is a figure which shows the operating state when the lock | rock of the variable capacity switching mechanism and 3rd cylinder in this invention is cancelled | released. It is a figure which shows the external appearance structure of the compressor in Example 1 of this invention. It is a figure which shows the internal structure of the compressor in FIG. It is a figure which shows the flow of a refrigerant | coolant in case the compressor in FIG. 6 is a partial operation mode. It is a figure which shows the flow of a refrigerant | coolant when the compressor in FIG. 6 is all operation modes. It is a figure which shows the structure of the 1st partition plate of the compressor in FIG. It is a figure which shows the structure of the 2nd cylinder of the compressor in FIG. It is a figure which shows the structure of the 3rd cylinder of the compressor in FIG. It is a figure which shows the structure of the 1st flange of the compressor in FIG. It is a figure which shows the structure of the 1st flange cover of the compressor in FIG. It is a figure which shows the channel | path relationship after incorporating the 1st flange of the compressor in FIG. 6, a 3rd cylinder, and a 1st flange cover. It is a figure which shows the external appearance structure of the compressor in Example 2 of this invention. It is a figure which shows the internal structure of the compressor in FIG. It is a figure which shows the flow of a refrigerant | coolant in case the compressor in FIG. 16 is a partial operation mode. It is a figure which shows the flow of a refrigerant | coolant in case the compressor in FIG. 16 is all operation modes. It is a figure which shows the structure of the 1st cylinder of the compressor in FIG. It is a figure which shows the structure of the 1st partition plate of the compressor in FIG. It is a figure which shows the structure of the 2nd cylinder of the compressor in FIG.

  As long as there is no contradiction, the embodiments of the present application and the features in the embodiments can be combined. Hereinafter, the present invention will be described in detail with reference to the drawings and embodiments.

  The drawings constituting a part of the present invention are for the purpose of further understanding the present invention, and the examples and the description shown in the present invention are intended to interpret the present invention and are not intended to limit the present invention.

  Here, it is needless to say that everything described in detail below is illustrative only and is intended to further explain the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

  In the present invention, unless there is a contradictory explanation, the azimuth terms used, for example, “in, out” refer to the inside and the outside of the contour of each member itself, and the present invention is not limited to these azimuth terms. .

  In order to solve the problem that the compressor is not capable of variable capacity operation in the existing technology and the heating capacity of the compressor is low and the energy efficiency is low, the present invention provides a compressor and a heat exchange system, where The exchange system includes a compressor, which is a compressor as follows.

  As shown in FIGS. 1 and 2, the heat exchange system includes a four-way valve 200, a first heat exchanger 300, a first throttle valve 400, a flash evaporator 500, and a second throttle valve 600. , A second heat exchanger 700, a dispenser 800, and an enthalpy increasing member 100 or a mixer 60, which will be described later, where the compressor outlet is a four-way valve 200, a first heat exchanger 300, The four-way valve 200 communicates with the four-way valve 200 via the first throttle valve 400, the flash evaporator 500, the second throttle valve 600, and the second heat exchanger 700. It is communicated to the mouth. The flash evaporator 500 is communicated with the compressor cylinder via the enthalpy increasing member 100 or the mixer 60.

  As shown in FIGS. 1 and 2, the compressor includes a crankshaft 10, a first cylinder 20, a second cylinder 30, and a third cylinder 40 that are sequentially arranged along the axial direction of the crankshaft 10. The first cylinder 20 is a high-pressure cylinder, the second cylinder 30 and the third cylinder 40 are low-pressure cylinders, and the compressor controls the unloading or loading of the third cylinder 40. When the compressor has a full operation mode and a partial operation mode, and the compressor is in the full operation mode, the variable displacement switching mechanism 50 is activated by the action of the exhaust pressure of the compressor. When the third cylinder 40 is loaded and the compressor is in the partial operation mode, the variable displacement switching mechanism 50 is operated by the third cylinder under the action of the supply air pressure of the compressor. 0, characterized in that to unload the.

  The high-pressure cylinder mentioned above refers to a cylinder whose atmospheric pressure is higher than that of the low-pressure cylinder, that is, the gas supplied from the low-pressure cylinder is compressed twice in the high-pressure cylinder and then compressed twice. Generate gas. Similarly, a low pressure type cylinder refers to a cylinder whose atmospheric pressure is lower than that of a high pressure type cylinder. The high pressure or low pressure here is relative and is not related to the numerical range of high pressure and low pressure.

  By providing a variable displacement switching mechanism in the compressor, at least one cylinder is used or unloaded by the action of the variable displacement switching mechanism 50, so that the compressor has a changeover switching function, and requires operation under different conditions. Can be satisfied, the heating capacity of the compressor under different conditions can be improved, and the overall energy efficiency of the compressor can be effectively improved. By using the variable capacity switching method, the compressor can be operated in different capacities and volume ratios under the conditions of the full operation mode and the partial operation mode, the capacity of the compressor to adapt to different conditions is strengthened, and the overall energy efficiency is high. Has merit.

  In the preferred embodiment shown in FIGS. 1 and 2, the variable displacement switching mechanism 50 controls the loading or unloading of the third cylinder 40. Here, the variable capacity switching mechanism 50 can also control the second cylinder 30 (not shown).

  As shown in FIGS. 1 to 4, the variable capacity switching mechanism 50 includes a pressure control unit and a lock component 52, and the pressure control unit is selectively connected to an exhaust port of the compressor or an air supply port of the compressor. The pressure control unit controls the cooperative relationship between the lock part 52 and the vane 41 of the third cylinder 40, and when the pressure control unit is connected to the intake port of the compressor, the lock part 52 and the third cylinder 40 are connected. When the vane 41 is locked and the third cylinder 40 is unloaded and the pressure control unit is connected to the exhaust port of the compressor, the lock part 52 and the vane 41 of the third cylinder 40 are unlocked. The third cylinder 40 is loaded. Since the exhaust pressure of the compressor is high and the supply pressure of the compressor is low, the lock between the lock part 52 and the vane 41 of the third cylinder 40 is released by the exhaust pressure of the compressor in the state shown in FIG. The third cylinder 40 is loaded, that is, used, at this time, the compressor realizes the full operation mode of large displacement small volume ratio twin compression, and in the state shown in FIG. Thus, the lock part 52 and the vane 41 of the third cylinder 40 are locked and the third cylinder 40 is unloaded, that is, the compressor is simply operated without being compressed. Realizes a partial operation mode of volume ratio twin compression.

  In the specific embodiment shown in FIGS. 3 and 4, the variable capacitance switching mechanism 50 further includes an elastic recovery element 53, the first end of the locking component 52 is locked or unlocked with the vane 41, and the elastic recovery element 53 is The pressure control unit is provided on the second end facing the first end of the lock component 52, and the pressure control unit controls the pressure at the first end of the lock component 52. Since the elastic recovery element 53 is provided, the elastic recovery element 53 provides the movement support force toward the vane 41 to the lock component 52 by the action of the elastic recovery element 53, and the exhaust pressure of the compressor acts against the elastic recovery element 53. Only when the lock part 52 and the vane 41 are unlocked, the compressor enters the full operation mode.

  The elastic recovery element 53 is preferably a spring.

  The lock component 52 in the present invention is a pin having a head, and both are locked after the head of the pin is engaged with the groove of the vane 41.

  In order to increase the control over the pressure of the lock component 52, the variable capacity switching mechanism 50 in the present invention further includes a pressure stabilization branch 54, and the first end of the pressure stabilization branch 54 is communicated with the air supply port of the compressor. The second end of the stable branch 54 provides pressure to the second end of the locking component 52 (see FIGS. 1 and 2). Since the pressure stabilization branch 54 provides the compressor air supply pressure to the second end of the lock part 52 throughout, the lock with the vane 41 is locked only when the compressor exhaust pressure acts on the first end of the lock part 52. Thus, the variable capacity switching mechanism 50 is easily controlled.

  In the preferred embodiment shown in FIGS. 1 and 2, the pressure controller includes a first branch 511, a first on-off valve 512 for controlling connection / disconnection of the first branch 511, and a second , And a second on-off valve 514 for controlling connection / disconnection of the second branch 513, and the first end of the first branch 511 is connected to the air supply port of the compressor The second end of the first branch passage 511 controls the pressure at the first end of the lock component 52. The first on-off valve 512 is provided on the first branch path 511. The first end of the second branch path 513 communicates with the exhaust port of the compressor, and the second end of the second branch path 513 controls the pressure at the first end of the lock part 52. The second on-off valve 514 is provided on the second branch 513. The first branch 511 provides the compressor exhaust pressure to the lock part 52, and the second branch 513 provides the compressor exhaust pressure to the lock part 52, thereby locking the lock part 52 and the vane 41. Realize release or lock switching.

  In addition, the dotted line part in a figure shows that the said branch path is cut | disconnected when the on-off valve corresponding to the said branch path is an OFF state.

  Depending on the difference of the gas replenishment member, two specific embodiments are provided in the present invention. In the first embodiment, the compressor uses the mixer 60, and in the second embodiment, the compressor uses the enthalpy increasing member 100. Hereinafter, two specific embodiments will be described respectively.

  In the first embodiment, as shown in FIGS. 5 to 14, the compressor further includes a mixer 60, and the first air supply port 61 of the mixer 60 is communicated with the exhaust port of the second cylinder 30. The mixer exhaust port 62 communicates with the air supply port of the first cylinder 20, and the second air supply port 63 of the mixer 60 is a gas supply port. As described above, the flash evaporator 500 is connected to the second air inlet 63 of the mixer 60.

  As shown in FIG. 5, the mixer 60 is provided outside the case 11 of the compressor. Thereby, the mixer 60 does not occupy the internal space of the compressor, and both can be reasonably arranged.

  As shown in FIG. 6, an upper lid assembly 12 and a lower lid 13 are provided at both ends of the case 11. The compressor is further provided in a stator assembly 14, a rotor assembly 15 provided in the stator assembly 14, a first roller 21 provided in the first cylinder 20, and a second cylinder 30. A second roller 33, a third roller 43 provided in the third cylinder 40, a third partition plate 16 provided between the second cylinder 30 and the first cylinder 20, including.

  As shown in FIG. 6, the compressor further includes a second flange 900, which is provided on the side of the first cylinder 20 away from the second cylinder 30.

  As shown in FIG. 6, the compressor further includes a first partition plate 70, and the first partition plate 70 is provided between the second cylinder 30 and the third cylinder 40. The compressor in this embodiment has a structure in which the second cylinder 30 exhausts and a mixer 60 (with an intermediate pressure refrigerant inside) is installed outside, and from the intermediate pressure refrigerant discharged from the low pressure type cylinder. The flow path to the intake of the high-pressure cylinder consists of an external pipe.

  As shown in FIGS. 7, 9, and 10, the first partition plate 70 has a first partition plate cavity 71 that communicates with the exhaust port of the second cylinder 30, and the second cylinder 30 further includes The external communication port 31 communicated with the first partition plate cavity 71 is provided, and the first air supply port 61 of the mixer 60 is communicated with the first partition plate cavity 71 via the external communication port 31.

  As shown in FIGS. 8 to 14, the third cylinder 40 has a first central flow path 42 that is isolated from the compression chamber of the third cylinder 40, and the compressor further includes a second partition plate 80. And the first flange 90, the second partition plate 80 is provided between the first partition plate 70 and the third cylinder 40, and the second partition plate 80 is further connected to the third cylinder 40. The second partition plate communication hole for communicating the one central flow path 42 and the first partition plate cavity 71 is provided. The first flange 90 is provided on the side of the third cylinder 40 away from the second cylinder 30, the first flange 90 has a first flange cavity 91, and the first flange cavity 91 is a third flange cavity 91. The exhaust port of the cylinder 40 communicates with the first central flow path 42.

  Here, the second partition plate 80, the first partition plate 70, and the second cylinder 30 form a refrigerant storage chamber in which the first partition plate cavity 71 stores the exhaust of the second cylinder 30. .

  As shown in FIG. 6, the compressor further includes a first flange cover 92, and the first flange 90 is provided between the third cylinder 40 and the first flange cover 92, and the first flange cover 92 is provided. The cavity 91 forms a refrigerant storage chamber for storing the exhaust of the third cylinder 40.

  The internal flow path of the refrigerant is formed on the third cylinder 40, the first flange 90, the second partition plate 80, the second cylinder 30, and the first partition plate 70. The variable pressure control passage 44 of the variable displacement switching mechanism 50 of the compressor is formed on the third cylinder 40, the first flange 90, and the first flange cover 92.

  As shown in FIG. 14, each of the third cylinder 40, the first flange 90, and the first flange cover 92 has a variable pressure control passage 44 (the pressure at the first end and the second end of the lock part 52 is adjusted). Control).

  When the compressor is in the partial operation mode, the air supply port of the second cylinder 30, the exhaust port of the second cylinder 30, the first partition plate cavity 71, the external communication port 31 of the second cylinder 30, the mixer 60, the air supply port of the first cylinder 20 and the exhaust port of the first cylinder 20 are communicated in this order. At this time, the first on-off valve 512 is turned on, the second on-off valve 514 is turned off, and the compressor operates in the double cylinder twin class mode with a small discharge large volume ratio. The refrigerant gas supplied by the dispenser 800 is introduced into the second cylinder 30, the first compressed refrigerant gas is discharged into the first partition plate cavity 71, and the external communication port 31 of the second cylinder 30. Through the mixer 60. At the same time, the supplementary gas supplied from the flash evaporator 500 side is introduced into the second air supply port 63 of the mixer 60, mixed with the gas in the mixer 60, and introduced into the first cylinder 20 for the second time. After that, the compression is performed, and then it is discharged to the upper space of the case 11 and further discharged from the exhaust pipe of the upper lid assembly 12. Thus, the compressor completes the refrigerant compressor overall flow.

  When the compressor is in the full operation mode, the air supply port of the second cylinder 30, the exhaust port of the second cylinder 30, the first partition plate cavity 71, the external communication port 31 of the second cylinder 30, and the mixer 60 The air supply port of the first cylinder 20 and the exhaust port of the first cylinder 20 are communicated in order, and the air supply port of the third cylinder 40 is the exhaust port of the third cylinder 40 and the first flange cavity 91. The first central channel 42 and the second partition plate communication hole communicate with the first partition plate cavity 71. At this time, the second on-off valve 514 is turned on, the first on-off valve 512 is turned off, and the compressor operates in a three-cylinder dual class mode with a large discharge and small volume ratio. The refrigerant gas supplied by the dispenser 800 is introduced into the second cylinder 30, and the refrigerant gas after the first compression is discharged into the first partition plate cavity 71. At the same time, the refrigerant supplied by the dispenser 800 is simultaneously introduced into the third cylinder 40, the refrigerant gas after the first compression is discharged into the first flange cavity 91, and the refrigerant gas in the first flange cavity 91 is The first flange 90, the second partition plate 80, the first partition plate cavity 71, and the external communication port 31 of the second cylinder 30 are put into the mixer 60. At the same time, the supplementary gas supplied from the flash evaporator 500 side is introduced into the second air supply port 63 of the mixer 60, mixed with the gas in the mixer 60, and then introduced into the first cylinder 20 for the second time. Is then discharged into the upper space of the case 11, and further discharged through the exhaust pipe of the upper lid assembly 12, whereby the compressor completes the refrigerant compressor overall flow.

  In the second embodiment, as shown in FIGS. 15 to 21, the compressor further includes an enthalpy increasing member 100, and the enthalpy increasing member 100 is communicated with the air supply port of the first cylinder 20. As described above, the flash evaporator 500 is connected to the enthalpy increasing member 100. As shown in FIG. 16, an upper lid assembly 12 and a lower lid 13 are provided at both ends of the case 11. The compressor further includes a stator assembly 14, a rotor assembly 15 provided in the stator assembly 14, a first roller 21 provided in the first cylinder 20, and a first roller provided in the second cylinder 30. 2 rollers 33 and a third roller 43 provided in the third cylinder 40.

  As shown in FIG. 16, the compressor further includes a first partition plate 70 and a third partition plate 16, and the first partition plate 70 is provided between the second cylinder 30 and the first cylinder 20. The third partition plate 16 is provided between the first cylinder 20 and the first partition plate 70. The compressor in the present embodiment has a structure that exhausts air from the second cylinder 30, and forms a flow path for medium pressure refrigerant in the case 11, and includes a third cylinder 40, a first flange 90, and a second cylinder, respectively. Partition plate 80, second cylinder 30, first partition plate 70, and third partition plate 16. The variable pressure control passage 44 of the compressor is provided on the third cylinder 40, the first flange 90, and the first flange cover 92 (controls the pressure at the first end and the second end of the lock part 52).

  As shown in FIG. 16, the compressor further includes a second flange 900, which is provided on the side of the first cylinder 20 away from the second cylinder 30.

  As shown in FIGS. 16, 19, and 20, the third partition plate 16 has a third partition plate communication hole, and the first partition plate 70 is communicated with the exhaust port of the second cylinder 30. It has the 1st partition plate cavity 71, and the 1st partition plate cavity 71 is connected to the air inlet of the 1st cylinder 20 via the 3rd partition plate communication hole.

  As shown in FIGS. 17 to 21, the third cylinder 40 has a first central flow path 42 isolated from the compression chamber of the third cylinder 40, and the second cylinder 30 is further a second cylinder. The second central flow path 32 is isolated from the 30 compression chambers, and the second central flow path 32 communicates with the first partition plate cavity 71, and the compressor further includes the second partition plate 80 and the second partition plate 80. 1, the second partition plate 80 is provided between the second cylinder 30 and the third cylinder 40, and the second partition plate 80 is further connected to the first center of the third cylinder 40. A second partition plate communication hole for communicating the flow path 42 with the second central flow path 32 of the second cylinder 30 is provided. The first flange 90 is provided on the side of the third cylinder 40 away from the second cylinder 30, the first flange 90 has a first flange cavity 91, and the first flange cavity 91 is a third flange cavity 91. The exhaust port of the cylinder 40 communicates with the first central flow path 42.

  Here, the first partition plate 70, the third partition plate 16, and the second cylinder 30 form a refrigerant storage chamber in which the first partition plate cavity 71 stores the exhaust of the second cylinder 30. . By the first flange 90, the third cylinder 40, and the first flange cover 92, the first flange cavity 91 forms a refrigerant storage chamber for storing the exhaust of the third cylinder 40.

  When the compressor is in the partial operation mode, the air supply port of the second cylinder 30, the exhaust port of the second cylinder 30, the first partition plate cavity 71, the third partition plate communication hole, and the first cylinder The 20 air supply ports and the exhaust port of the first cylinder 20 are communicated in order. At this time, the second on-off valve 514 is turned off, the first on-off valve 512 is turned on, and the compressor operates in the twin cylinder twin class mode with a small discharge and large volume ratio. The refrigerant gas supplied by the dispenser 800 is put into the second cylinder 30, and the refrigerant gas after the first compression is discharged into the first partition plate cavity 71, together with the gas replenished from the enthalpy increasing member 100 side. 1 is injected into the cylinder 20 and compressed for the second time, and then discharged into the upper space of the case 11 and further discharged from the exhaust pipe of the upper lid assembly 12. To complete.

  When the compressor is in the full operation mode, the air supply port of the second cylinder 30, the exhaust port of the second cylinder 30, the first partition plate cavity 71, the air supply port of the first cylinder 20, the first The exhaust port of the cylinder 20 is communicated in order, and the air supply port of the third cylinder 40 is the exhaust port of the third cylinder 40, the first flange cavity 91, the first central flow path 42, and the second partition plate. The second central flow path 32 and the first partition plate cavity 71 communicate with each other through the communication hole. At this time, the second on-off valve 514 is turned on, the first on-off valve 512 is turned off, and the compressor operates in a three-cylinder dual class mode with a large discharge and small volume ratio. The refrigerant gas supplied by the dispenser 800 is introduced into the second cylinder 30, and the refrigerant gas after the first compression is discharged into the first partition plate cavity 71. At the same time, the refrigerant supplied by the dispenser 800 is simultaneously introduced into the third cylinder 40, the refrigerant gas after the first compression is discharged into the first flange cavity 91, and the refrigerant gas in the first flange cavity 91 is It enters the first partition plate cavity 71 through the first flange 90 and the second partition plate 80. At this time, both the gas in the first partition plate cavity 71 and the gas replenished from the enthalpy increasing member 100 side are introduced into the first cylinder 20 and the second compression is performed. And is further discharged from the exhaust pipe of the upper lid assembly 12, whereby the compressor completes the refrigerant compressor overall flow.

  The terminology used herein is for describing a specific embodiment and is not intended to limit the exemplary embodiments of the present application. Unless stated otherwise, singular forms include plural forms and “include” and / or “include” in the specification of the application refer to features, steps, operations, elements, components, and / or Or that there is a combination of them.

  It should be noted that the terms “first”, “second”, etc. in the specification, claims and drawings of the present application are for distinguishing similar objects, and are not intended to limit a specific order or order. Absent. Such numerical values may be interchanged in some cases so that the embodiments of the present application described herein may be implemented in a different order than illustrated or described.

  The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. All modifications, substitutions, improvements and the like within the spirit and principle of the present invention are included in the protection scope of the present invention.

10: Crankshaft; 11: Case; 12: Upper lid assembly; 13: Lower lid; 14: Stator assembly; 15: Rotor assembly; 16: Third partition plate; 2: First cylinder; 30: second cylinder; 31: external communication port; 32: second central flow path; 33: second roller; 40: third cylinder; 41: vane; 42: first central flow path; 43: third roller; 44: variable pressure control path; 50: variable displacement switching mechanism; 511: first branch path; 512: first on-off valve; 513: second branch path; 514: second path 52: Locking part; 53: Elastic recovery element; 54: Pressure stabilizing branch; 60: Mixer; 61: First air inlet; 62: Mixer air outlet; 63: Second air inlet; : First partition plate; 71: 80: second partition plate; 90: first flange; 91: first flange cavity; 92: first flange cover; 100: enthalpy increasing member; 200: four-way valve; 400: first throttle valve; 500: flash evaporator; 600: second throttle valve; 700: second heat exchanger; 800: dispenser; 900: second flange.

Claims (14)

A crankshaft (10), and a first cylinder (20), a second cylinder (30), and a third cylinder (40) arranged in order along the axial direction of the crankshaft (10), The first cylinder (20) is a high pressure type cylinder, and the second cylinder (30) and the third cylinder (40) are low pressure type cylinders,
A variable displacement switching mechanism (50) for controlling unloading or loading of the third cylinder (40), wherein the compressor has a full operation mode and a partial operation mode;
When the compressor is in the full operation mode, the variable displacement switching mechanism (50) loads the third cylinder (40) by the action of the exhaust pressure of the compressor,
When the compressor is in the partial operation mode, the variable displacement switching mechanism (50) unloads the third cylinder (40) by the action of the supply air pressure of the compressor ,
The first air supply port (61) communicates with the exhaust port of the second cylinder (30), the mixer exhaust port (62) communicates with the air supply port of the first cylinder (20), and the first And further includes a mixer (60) in which the second air supply port (63) is a gas supply port,
A first partition plate (70) provided between the second cylinder (30) and the third cylinder (40);
The first partition plate (70) has a first partition plate cavity (71) communicated with an exhaust port of the second cylinder (30), and the second cylinder (30) further includes the first partition plate (70). An external communication port (31) communicating with one partition plate cavity (71), and the first air supply port (61) of the mixer (60) is connected to the first communication port via the external communication port (31). When the compressor is in a partial operation mode, the air supply port of the second cylinder (30), the exhaust port of the second cylinder (30), First partition plate cavity (71), external communication port (31) of second cylinder (30), mixer (60), air supply port of first cylinder (20), first cylinder (20) of the exhaust port is passed sequentially communicated Compressor which is characterized. The variable capacitance switching mechanism (50)
A pressure controller selectively connected to an exhaust port of the compressor or an air supply port of the compressor;
Controls cooperative relationship between the vanes (41) of the said pressure controller Gallo click part (52) a third cylinder (40), said pressure control unit is connected to the air supply port of the compressor When the third cylinder (40) is locked with the vane (41) of the third cylinder (40) so that the third cylinder (40) is unloaded, and the pressure control unit is connected to the exhaust port of the compressor A locking part (52) for unlocking the vane (41) of the third cylinder (40) so as to load the third cylinder (40). The compressor according to 1.   The variable capacity switching mechanism (50) further includes an elastic recovery element (53), and a first end of the locking part (52) is locked or unlocked with the vane (41), and the elastic recovery element (53) is provided. ) Is provided on the second end of the lock component (52) opposite the first end, and the pressure control unit controls the pressure at the first end of the lock component (52). The compressor according to claim 2.   The variable capacity switching mechanism (50) has a first end communicating with the air supply port of the compressor, and a second end providing a pressure stabilizing branch (54) providing pressure to the second end of the lock part (52). The compressor according to claim 3, further comprising: The pressure control unit is
A first branch (511) that has a first end in communication with the air supply port of the compressor, and a second end that controls the pressure at the first end of the lock part (52);
A first on-off valve (512) provided on the first branch path (511) for controlling connection / disconnection of the first branch path (511);
A second branch (513) having a first end communicating with the exhaust port of the compressor and a second end controlling the pressure at the first end of the locking part (52);
And a second on-off valve (514) provided on the second branch path (513) for controlling connection / disconnection of the second branch path (513). Item 4. The compressor according to Item 3. The third cylinder (40) has a first central channel (42) isolated from the compression chamber of the third cylinder (40);
Provided between the first partition plate (70) and the third cylinder (40), the first central flow path (42) of the third cylinder (40) and the first cylinder A second partition plate (80) having a second partition plate communication hole for communicating with the partition plate cavity (71);
The third cylinder (40) is provided on the side away from the second cylinder (30) and communicates with the exhaust port of the third cylinder (40) and the first central flow path (42). A first flange (90) having a first flange cavity (91) to be
When the compressor is in the full operation mode, the air supply port of the second cylinder (30), the exhaust port of the second cylinder (30), the first partition plate cavity (71), the second An external communication port (31) of the cylinder (30), the mixer (60), an air supply port of the first cylinder (20), and an exhaust port of the first cylinder (20) are sequentially communicated, and The air supply port of the third cylinder (40) is the exhaust port of the third cylinder (40), the first flange cavity (91), the first central flow path (42), and the second partition. The compressor according to claim 1 , wherein the compressor communicates with the first partition plate cavity (71) through a plate communication hole. A heat exchange system including a compressor, wherein the compressor is the compressor according to any one of claims 1 to 6 . A crankshaft (10), and a first cylinder (20), a second cylinder (30), and a third cylinder (40) arranged in order along the axial direction of the crankshaft (10), The first cylinder (20) is a high pressure type cylinder, and the second cylinder (30) and the third cylinder (40) are low pressure type cylinders,
A variable displacement switching mechanism (50) for controlling unloading or loading of the third cylinder (40), wherein the compressor has a full operation mode and a partial operation mode;
When the compressor is in the full operation mode, the variable displacement switching mechanism (50) loads the third cylinder (40) by the action of the exhaust pressure of the compressor,
When the compressor is in the partial operation mode, the variable displacement switching mechanism (50) unloads the third cylinder (40) by the action of the supply air pressure of the compressor,
An enthalpy increasing member (100) in communication with the air inlet of the first cylinder (20);
A first partition plate (70) provided between the second cylinder (30) and the first cylinder (20);
A third partition plate (16) provided between the first cylinder (20) and the first partition plate (70);
The third partition plate (16) has a third partition plate communication hole, and the first partition plate (70) communicates with the exhaust port of the second cylinder (30). The compressor has a plate cavity (71), and the first partition plate cavity (71) communicates with an air supply port of the first cylinder (20) through the third partition plate communication hole. Is in the partial operation mode, the air supply port of the second cylinder (30), the exhaust port of the second cylinder (30), the first partition plate cavity (71), the third partition A compressor characterized in that a plate communication hole, an air supply port of the first cylinder (20), and an exhaust port of the first cylinder (20) are communicated in order. The variable capacitance switching mechanism (50)
A pressure controller selectively connected to an exhaust port of the compressor or an air supply port of the compressor;
When the pressure control unit controls the cooperative relationship between the lock part (52) and the vane (41) of the third cylinder (40), and the pressure control unit is connected to the intake port of the compressor, When the third cylinder (40) is locked with the vane (41) of the third cylinder (40) so as to unload and the pressure control unit is connected to the exhaust port of the compressor, 9. A locking part (52) for unlocking the vane (41) of the third cylinder (40) to load the third cylinder (40). The compressor described. The variable capacity switching mechanism (50) further includes an elastic recovery element (53), and a first end of the locking part (52) is locked or unlocked with the vane (41), and the elastic recovery element (53) is provided. ) Is provided on the second end of the lock component (52) opposite the first end, and the pressure control unit controls the pressure at the first end of the lock component (52). The compressor according to claim 9. The variable capacity switching mechanism (50) has a first end communicating with the air supply port of the compressor, and a second end providing a pressure stabilizing branch (54) providing pressure to the second end of the lock part (52). The compressor according to claim 10, further comprising: The pressure control unit is
A first branch (511) that has a first end in communication with the air supply port of the compressor, and a second end that controls the pressure at the first end of the lock part (52);
A first on-off valve (512) provided on the first branch path (511) for controlling connection / disconnection of the first branch path (511);
A second branch (513) having a first end communicating with the exhaust port of the compressor and a second end controlling the pressure at the first end of the locking part (52);
And a second on-off valve (514) provided on the second branch path (513) for controlling connection / disconnection of the second branch path (513). Item 11. The compressor according to Item 10. The third cylinder (40) has a first central flow path (42) isolated from the compression chamber of the third cylinder (40), and the second cylinder (30) further includes the second cylinder (30). A second central flow path (32) isolated from the compression chamber of the cylinder (30), the second central flow path (32) communicating with the first partition plate cavity (71),
The first central flow path (42) of the third cylinder (40) and the second cylinder are provided between the second cylinder (30) and the third cylinder (40). A second partition plate (80) further having a second partition plate communication hole for communicating with the second central flow path (32) of (30);
The third cylinder (40) is provided on the side away from the second cylinder (30) and communicates with the exhaust port of the third cylinder (40) and the first central flow path (42). A first flange (90) having said first flange cavity (91) to be
When the compressor is in the full operation mode, the air supply port of the second cylinder (30), the exhaust port of the second cylinder (30), the first partition plate cavity (71), the first The air supply port of the cylinder (20) and the exhaust port of the first cylinder (20) are communicated in order, and the air supply port of the third cylinder (40) is the exhaust gas of the third cylinder (40). The second central flow path (32) and the first partition through the opening, the first flange cavity (91), the first central flow path (42), and the second partition plate communication hole. The compressor according to claim 8, characterized in that it is in communication with a plate cavity (71). A heat exchange system including a compressor, wherein the compressor is the compressor according to any one of claims 8 to 13.