JP6622397B2 - Two-stage variable capacity compressor and air conditioner system including the same - Google Patents

Description

  The present invention relates to a two-stage variable capacity compressor and an air conditioner system including the same.

  As national energy efficiency level requirements increase day by day, traditional two-stage variable capacity compressors solve the shortage of low temperature due to increased gas replenishment enthalpy and bring high temperature of air conditioners The amount will be satisfied. However, the two-stage variable capacity compressor compresses with two cylinders of high pressure and low pressure, so the pressure ratio for heavy load working environments (nominal cooling, nominal heating, national standard working environment, low temperature working environment, etc.) Is big. The pressure ratio can be effectively distributed by adopting two-stage compression, and high and low pressure class cylinders can be operated rationally. For light-load work environments (such as IPLV work environment, intermediate work environment, etc.) operated by air conditioner system, single cylinder single stage variable capacity operation is realized by switching between medium and low pressure by variable capacity mechanism, and energy during light work environment operation Although the problem of low efficiency can be solved effectively, the influence on medium to low pressure switching in the working environment is great, and the caulking pin may malfunction, and the switching will fail. Specifically, in the conventional method, the cylinder slide slot tail communicates with the intermediate cavity via the baffle plate gas introduction slot and the lower cylinder gas introduction slot, and realizes switching between intermediate pressure and low pressure by a variable capacity mechanism. In the two-stage operation mode, the intermediate cavity has a medium pressure, and the pressure difference received by the caulking pin is a pressure difference between the medium pressure and the low pressure. There is a possibility that the influence of the working environment is large and the pressure difference between the medium and low pressures is smaller than the spring force and the two stages cannot operate normally.

  In the current compressor, there are various lock mechanisms for controlling the movement of the slide. One is to control the movement of the caulking pin by turning on and off the electromagnetic, and this method is complicated in structure and control of the whole compressor in terms of mounting and reliability of the electromagnet. The other is to switch the intake pressure and exhaust pressure of the caulking pin tail to control the movement of the caulking pin under the resultant force of the spring force to lock the slide, or to operate the slide normally, so that the spring It is provided on the head, and it is necessary to add a position limiting structure, which complicates the structure. In addition, this method is applied only to the compressor device for low back pressure operation, and a spring is attached to the slide tail. I need it. The other is a sealed structure of the slide slot tail with the cylinder unloaded, and the slide motion is controlled by switching the pressure of the slide slot tail. The caulking pin can lock the sliding movement only when there is a pressure difference. The mounting of the caulking pin mounted on the lower flange is complicated, and the method of mounting the caulking pin in the lower flange silencing cavity and restricting the position by the silencer has a high demand for the hardness of the silencer. Further, the high pressure of the patent is high pressure oil drawn from the oil tank, which guarantees lubrication and sealing of the slide, but at the same time, the oil accumulates in the slide slot and causes the disadvantage of increasing power consumption during the slide operation process.

  The main object of the present invention is to provide a two-stage variable capacity compressor in which single / two-stage variable capacity switching is stable and safe, and an air conditioner system including the same.

  In order to achieve the above object, according to one aspect of the present invention, a first cylinder group and a second cylinder group disposed along the axial direction of a two-stage variable capacity compressor are provided, and the first cylinder group includes: A first cylinder having a first slide slot, a first via that communicates with the first slide slot and enters high pressure gas into a cylinder wall of the first cylinder along the first cylinder, and is movable to the first slide slot The first slide that has a positioning slot and contacts the outer peripheral surface of the first roller that is provided centrifugally, the upper end communicates with the first via, and the lower end selects high pressure gas or low pressure gas By inserting it in a position, it can be inserted into the positioning slot to lock the first slide at the center of rotation away from the first roller, or it can be unlocked from the positioning slot. A second cylinder group, a second cylinder provided with a second slide slot, and an outer peripheral surface of a second roller provided movably in the second slide slot and provided centrifugally And a second slide that abuts at all times.

  Further, the lock mechanism includes a caulking pin having an upper end portion communicating with the first via and a lower end portion configured to allow selection of high pressure gas or low pressure gas.

  In addition, the first cylinder is an intake port that communicates with the lower end portion of the caulking pin and selectively selects high pressure gas or low pressure gas, and is in contact with the communicated intake port, the main intake port, and the lower end portion of the caulking pin. And a tool.

  Further, the first cylinder group is provided below the first cylinder, and a mounting slot provided along the axial direction of the two-stage variable capacity compressor is opened at a position corresponding to the positioning slot, and the caulking pin is installed in the mounting slot. And a flange provided movably.

  Further, the flange has a flange gas introduction hole that communicates with the first slide slot via the intake port.

  Further, the first cylinder group is connected to the bottom of the flange, has a lower cover plate gas introduction slot, and the intake port communicates with the lower end of the caulking pin through the flange gas introduction hole and the lower cover plate gas introduction slot. A lid plate was further provided.

  In addition, a third via communicating with the inlet of the second cylinder was opened on the side wall of the silencer cavity of the flange.

  Further, the first cylinder was further provided with a via, the flange was provided with a connection hole communicating with the silencer cavity of the flange, and the via communicated with the silencer cavity of the flange.

  In addition, the 4th and 5th vias are opened in the flange, the lower cover plate has a lower cover plate gas introduction slot, the fourth via is the fifth via, the lower cover plate gas introduction slot of the first cylinder group The high pressure gas or the low pressure gas is selectively introduced into the fourth via in communication with the lower end portion of the caulking pin through the.

  Further, the second cylinder has a sixth via communicated with the second slide slot, and is provided in the cylinder wall of the second cylinder along the radial direction of the second cylinder, so that high-pressure gas is introduced.

  According to another aspect of the present invention, there is further provided another air conditioning system including the two-stage variable capacity compressor, which is the above-described two-stage variable capacity compressor.

  Further, the air conditioner system includes an enthalpy increasing device, a Zener device and a separator connected to a two-stage variable capacity compressor, and a pipe line between the two-stage variable capacity compressor, the enthalpy increasing device, the Zener device and the separator. And a valve for controlling on / off, and a lower end portion of the lock mechanism allows high pressure gas or low pressure gas to be selected.

  In addition, the valve has a valve A provided in the first gas replenishment line communicating with the line between the inlet of the enthalpy increasing device and the inlet of the separator, the inlet of the enthalpy increasing device and the inlet of the separator. The first gas replenishment line is in communication with the line between the inlet of the enthalpy increasing device and the pipe between the outlet of the two-stage variable capacity compressor and the inlet of the zener device. Provided in the passage, and the outlet of the Zener device communicated with the inlet of the first cylinder and the pipe between the inlet of the Zener device and the outlet of the separator, and the inlet of the Zener device is connected to the valve C. Provided in the second gas replenishment line communicating between the valve D communicating with the line communicating between the valves D and the outlet of the enthalpy increasing device and the two-stage variable capacity compressor, , The third gas in communication with the intake of the second cylinder And a valve E provided in the fourth gas replenishing pipe, and a fourth gas replenishing pipe communicating with the silencing cavity of the flange of the first cylinder group.

  In addition, the valve has a valve A provided in the first gas replenishment line communicating with the line between the inlet of the enthalpy increasing device and the inlet of the separator, the inlet of the enthalpy increasing device and the inlet of the separator. Between the outlet of the two-stage variable capacity compressor and the inlet of the zener device, and the first gas replenishment conduit communicated with the conduit between the inlet of the valve B and the enthalpy increasing device. The valve C provided in the pipe line and the pipe line between the inlet of the Zener device and the outlet of the separator, and the inlet of the Zener device communicated with the pipe line communicating between the valve C and the valve D. And an intake port of the first cylinder is selectively communicated with the outlet of the Zener device or the outlet of the separator.

  Furthermore, the valve is a three-way valve, and is provided in a pipe line between the inlet of the enthalpy increasing device and the inlet of the separator, the outlet communicates with the inlet of the enthalpy increasing device, and the first inlet is the separator. A three-way valve with a second inlet communicating with the first gas replenishment line, and a two-stage variable capacity compressor and a separator. Communicated with the inlet of the device, the first inlet communicated with the outlet of the two-stage variable capacity compressor, the second inlet communicated with the outlet of the separator, and the outlet communicated with the inlet of the zener device, The second gas replenishment pipe is provided in the second gas replenishment line where the outlet of the zener device communicates with the inlet of the first cylinder and the second gas replenishment line communicating between the outlet of the enthalpy increase device and the two-stage variable capacity compressor A third gas refill line communicating with the intake of the second cylinder And a fourth gas replenishment pipe in communication with the outlet of the first cylinder, provided with a valve E provided in the fourth gas replenishment pipe.

  Furthermore, the valve is a three-way valve, and is provided in a pipe line between the inlet of the enthalpy increasing device and the inlet of the separator, the outlet communicates with the inlet of the enthalpy increasing device, and the first inlet is the separator. A three-way valve with a second inlet communicating with the first gas replenishment line, and a two-stage variable capacity compressor and a separator. Valve G communicating with the inlet of the device, with the first inlet communicating with the outlet of the two-stage variable capacity compressor, the second inlet communicating with the outlet of the separator, and the outlet communicating with the inlet of the Zener device And the intake port of the first cylinder is selectively communicated with the outlet of the Zener device or the outlet of the separator.

  By applying the claims of the present invention, the first via is opened in the cylinder wall of the first cylinder, and high pressure gas is introduced into the first via, so the gas pressure at the upper end of the lock mechanism is high pressure gas. is there. Since the lower end of the lock mechanism allows high pressure gas or low pressure gas to be selected, the gas pressure at the lower end of the lock mechanism is switched between the high pressure gas and the low pressure gas. The pressure difference received by the locking mechanism is the pressure difference between the high pressure and the low pressure, and the high / low pressure switching is performed to realize stable switching between the two-stage and single-stage variable capacity modes. Resolve possible switching stability problems.

The drawings in the specification, which constitute part of this application, are used to provide a further understanding of the invention, and the exemplary embodiments of the invention and the description thereof are not appropriate and do not limit the invention. Not for interpretation.
1 is a cross-sectional view showing a first embodiment of a two-stage variable capacity compressor according to the present invention. 1 is an exploded view showing a first embodiment of a two-stage variable capacity compressor according to the present invention. FIG. FIG. 5 is an exploded view showing a second embodiment of the two-stage variable capacity compressor according to the present invention. FIG. 6 is a cross-sectional view showing a third embodiment of the two-stage variable capacity compressor according to the present invention. FIG. 6 is an exploded view showing a third embodiment of the two-stage variable capacity compressor according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a variable capacity two-stage operation principle diagram showing a first embodiment of an air conditioner system according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram illustrating a variable capacity single stage operation principle showing a first embodiment of an air conditioner system according to the present invention. FIG. 6 is a diagram showing the principle of variable capacity two-stage operation showing a second embodiment of the air-conditioning system according to the present invention. FIG. 5 is a principle diagram of variable capacity single-stage operation showing a second embodiment of the air-conditioning system according to the present invention. FIG. 6 is a principle diagram of variable capacity two-stage operation showing a third embodiment of the air-conditioning system according to the present invention. FIG. 7 is a principle diagram of variable capacity single-stage operation showing a third embodiment of an air-conditioning system according to the present invention. FIG. 6 is a diagram showing the principle of variable capacity two-stage operation showing a fourth embodiment of the air-conditioning system according to the present invention. FIG. 6 is a diagram illustrating a variable capacity single-stage operation principle showing a fourth embodiment of an air-conditioning system according to the present invention.

  In addition, when it does not collide, the characteristic in the Example and Example in this application can be combined mutually. Hereinafter, the present invention will be described in detail with reference to the drawings and embodiments.

  As shown in FIGS. 1 to 4, the present invention provides a two-stage variable capacity compressor.

  The two-stage variable capacity compressor includes a first cylinder group 10 and a second cylinder group 20 arranged along the axial direction of the two-stage variable capacity compressor.

  The first cylinder group 10 includes a first cylinder 11 having a first slide slot 12 and a first via 12a. The first via 12a communicates with the first slide slot 12 and is provided in the cylinder wall of the first cylinder 11 along the radial direction of the first cylinder 11, thereby putting high-pressure gas therein. The first slide 14 is movably provided in the first slide slot 12 and has a positioning slot 15 in contact with the outer peripheral surface of the first roller 30 provided centrifugally. The upper end portion of the lock mechanism 16 communicates with the first via 12a, and the lower end portion allows the high pressure gas or the low pressure gas to be selected, so that the lock mechanism 16 is inserted into the positioning slot 15 and the first slide is inserted into the first slide. 1 has a lock position for locking at the center of rotation away from the roller, or a lock release position for exiting from the positioning slot 15. After the locking mechanism 16 locks the first slide 14, the first cylinder 11 is idled and is not activated. After the locking mechanism 16 is removed from the first slide 14, the first slide 14 is pressed against the outer peripheral surface of the first roller 30, and the first cylinder is in an operating state.

  The second cylinder group 20 includes a second cylinder 21 and a second slide 23. The second cylinder 21 is provided with a second slide slot 22, and the second slide 23 is movably provided in the second slide slot 22, and is in contact with the outer peripheral surface of the second roller 40 provided centrifugally. did. The second cylinder 21 is in operation from start to finish during start-up and operation.

  Since the first via 12a is opened in the cylinder wall of the first cylinder 11 and high pressure gas is introduced into the first via 12a, the gas pressure at the upper end of the lock mechanism 16 is high pressure gas. Since the lower end portion of the lock mechanism 16 allows high pressure gas or low pressure gas to be selected, the gas pressure at the lower end portion of the lock mechanism 16 is switched between the high pressure gas and the low pressure gas. The pressure difference received by the lock mechanism 16 is a pressure difference between high pressure and low pressure, and high and low pressure switching is performed to realize stable switching between the two-stage and single-stage variable capacity modes. It solves the problem of switching stability that may exist in switching.

  The first slide slot 12 communicates with the frame body high pressure, the slide tail does not need to be equipped with an elastic tool, no special oil supply path is required, and the demand for slide operation lubrication can be satisfied, The slide slot has no harmful effect of increasing power consumption due to oil pools. High pressure gas or low pressure gas is introduced into the lower end of the lock mechanism 16 to switch the pressure, simplifying the lock mechanism, and reducing processing difficulty and production cost.

  Further, the lock mechanism 16 includes a caulking pin 16a and an elastic tool 16b. The upper end portion of the caulking pin 16a communicates with the first via 12a, and the lower end portion of the caulking pin 16a allows high pressure gas or low pressure gas to be selected. The first cylinder 11 has an intake port 13b and a main intake port 13a. The lower end portion of the caulking pin 16a communicates with the intake port 13b, and the intake port 13b allows high pressure gas or low pressure gas to be selected. The elastic tool 16b is in contact with the lower end portion of the caulking pin 16a. The elastic tool 16b is provided below the caulking pin 16a, and can provide upward pressure for the caulking pin 16a. In this embodiment, the caulking pin head does not need to be provided with a spring position limiting mechanism.

  As shown in FIGS. 1 to 5, the first cylinder group 10 is provided below the first cylinder 11, and is provided along the axial direction of the two-stage variable capacity compressor at a position corresponding to the positioning slot 15. The mounting slot 18 is opened, and a flange 17 is further provided. The caulking pin 16a is movably provided in the mounting slot 18.

  As shown in FIG. 2, the flange 17 has a flange gas introduction hole 17a communicating with the first slide slot 12 through the air inlet 13b.

  As shown in FIG. 2, the first cylinder group 10 is connected to the bottom of the flange 17, has a lower cover plate gas introduction slot 19a, and the intake port 13b has a flange gas introduction hole 17a and a lower cover plate gas introduction slot 19a. The lower lid plate 19 is further provided in communication with the lower end of the caulking pin 16a via

  Further, as shown in FIG. 2, a third via 17 d communicating with the air inlet of the second cylinder 21 is opened on the side wall of the silencer cavity of the flange 17.

  As shown in FIG. 3, the first cylinder 11 is further provided with a via 11a, the flange 17 is provided with a connection hole 17e communicating with the silencing cavity, and the via 11a communicates with the silencing cavity of the flange 17.

  As shown in FIG. 5, the flange 17 is provided with a fourth via 17b and a fifth via 17c, the lower cover plate 19 has a lower cover plate gas introduction slot 19a, the fourth via 17b is a fifth via 17c, A high-pressure gas or a low-pressure gas is selectively introduced into the fourth via 17b through the lower lid plate gas introduction slot 19a so as to communicate with the lower end portion of the caulking pin 16a.

  Further, as shown in FIG. 2, the second cylinder 21 is provided on the cylinder wall of the second cylinder 21 along the radial direction of the second cylinder 21, so that high pressure gas is introduced and communicated with the second slide slot 22. The sixth via 24 is provided.

  The present invention further provides an air conditioner system including the two-stage variable capacity compressor 50 which is the above-described two-stage variable capacity compressor.

  As shown in FIGS. 6 to 13, the air conditioner system includes an enthalpy increasing device 60, a Zener device 70 and a separator 80 that are in communication with the two-stage variable capacity compressor 50, a two-stage variable capacity compressor 50, and an enthalpy increasing apparatus. 60, a valve for controlling on / off of the pipe line between the Zener device 70 and the separator 80, and a lower end portion of the lock mechanism 16 allows high pressure gas or low pressure gas to be selected.

  Specifically, as shown in FIGS. 1 and 2, the tail of the first slide slot 12 communicated with the high pressure in the frame via the first via 12a. The intake port 13b communicated with the intake port 13a of the first cylinder 11, and communicated with the lower end portion of the caulking pin 16a to which the elastic tool 16b was mounted via the flange gas introduction hole 17a and the lower lid plate gas introduction slot 19a. In the two-stage operation mode, the upper end of the caulking pin 16a is a frame high pressure, the lower end of the caulking pin 16a is the intake pressure of the lower cylinder, which is the first cylinder 11, and the pressure difference received by the caulking pin 16a is a high pressure and a low pressure. Due to the pressure difference, the caulking pin 16a is unloaded, and the first slide 14 operates normally.

  In the two-stage variable capacity compressor in another embodiment, the third via 17d is opened on the side wall of the silencer cavity of the flange 17, and the exhaust of the first cylinder, which is the exhaust of the first cylinder 11, is passed through the third via 17d. The external enthalpy increasing device 60 communicates with the enthalpy increasing replenishing gas and then enters the intake cavity of the second cylinder 21 through the intake port of the second cylinder 21 and secondarily compresses.

  In the variable capacity single-stage operation mode, the pressure at the inlet 13b of the first cylinder 11 is switched to high pressure by the variable capacity machine, that is, the upper end that is the head of the caulking pin 16a and the lower end that is the tail of the caulking pin 16a are high pressure. The caulking pin 16a moves upward under the action of a spring force, locks the first slide 14 of the first cylinder 11, and the lower cylinder, which is the first cylinder 11, is unloaded.

  As shown in FIGS. 4 and 5, in the present embodiment, the tail of the first slide slot 12 of the first cylinder 11 communicated with the high pressure inside the frame via the first via 12a. The flange 17 is additionally provided with a fourth via 17b and a fifth via 17c. The fourth via 17b is directly connected to the external buffer cavity, and the lower cover plate gas introduction slot 19a is connected via the fifth via 17c. And communicated with the lower end of the caulking pin 16a. In the two-stage operation mode, the upper end which is the head of the caulking pin 16a is the frame body high pressure, the lower end which is the tail of the caulking pin 16a is the intake pressure, and the pressure difference received by the caulking pin 16a is the pressure difference between the high pressure and the low pressure The caulking pin is unloaded and the first slide 14 operates normally. The exhaust of the first cylinder 11 that is the exhaust of the first-class cylinder enters the intake cavity of the first cylinder 11 that is the upper cylinder intake cavity through the intake port of the second cylinder 21 through the first-class exhaust circulation path, and is secondarily compressed.

  In the variable capacity single-stage operation mode, the pressure of the fourth via 17b of the flange 17 is switched to high pressure by the variable capacity machine, that is, the caulking pin head and the caulking pin tail are at high pressure, and the caulking pin is upward under the action of the spring force. To lock the lower cylinder slide and the lower cylinder is unloaded.

  Preferably, as shown in FIG. 6 and FIG. 7, the valve is a valve A provided in a first gas replenishment line communicating with a line between the inlet of the enthalpy increasing device 60 and the inlet of the separator 80. A valve B provided in a conduit between the inlet of the enthalpy increasing device 60 and the inlet of the separator 80, and the first gas replenishment conduit communicating with the conduit between the inlet of the enthalpy increasing device 60; A valve C provided in a conduit between the outlet of the stage variable capacity compressor 50 and the inlet of the Zener device 70, the outlet of the Zener device 70 communicating with the inlet 13b of the first cylinder 11, and the inlet of the Zener device 70; Valve D, which is provided in the pipe line between the outlets of the separator 80, and the inlet of the Zener device 70 communicates with the pipe line that communicates with the valve C, the outlet of the enthalpy increasing device 60, and the two-stage variable capacity compression Provided in the second gas replenishment line communicating between the machines 50, The charging line includes a third gas replenishing line that communicates with the intake port of the second cylinder 21 and a fourth gas replenishing line that communicates with the exhaust port of the first cylinder 11, and is provided in the fourth gas replenishing line. And valve E.

  Preferably, as shown in FIGS. 8 and 9, the valve is provided with a valve A provided in a first gas replenishment line communicating with a line between the inlet of the enthalpy increasing device 60 and the inlet of the separator 80. A valve B provided in a conduit between the inlet of the enthalpy increasing device 60 and the inlet of the separator 80, and the first gas replenishment conduit communicating with the conduit between the inlet of the enthalpy increasing device 60; A valve C provided in a conduit between the outlet of the stage variable capacity compressor 50 and the entrance of the Zener device 70, and a Zener device provided in a conduit between the entrance of the Zener device 70 and the outlet of the separator 80 The inlet of the first cylinder 11 can be selected as the outlet of the Zener device 70 or the outlet of the separator 80, and the valve D communicated with a pipe line communicating with the valve C. Communicated.

  As shown in FIG. 6, when the variable displacement two-stage operation mode is started, the valves A, D and E are turned on, and the valves B and C are turned off. The tail of the first slide slot 12 has an open structure, communicates with the high pressure of the frame, and the lower end portion of the caulking pin 16a for locking the first slide 14 is the intake port 13b of the first cylinder 11 which is a first-class cylinder And communicated directly. When the valve D is turned on, the intake port 13b of the first cylinder 11 communicates with the intake pressure, the caulking pin 16a moves downward under the action of the high and low pressure difference, and the first slide 14 operates normally. The exhaust intermediate pressure formed after compression of the first cylinder 11 is mixed with the intermediate pressure of gas replenishment via the valve A and the enthalpy increasing device 60 by turning on the valve E, and then the intake air of the second cylinder 21 The exhaust high-pressure gas formed after entering the mouth and compressing the intermediate pressure of the second cylinder 21 enters the inside of the compressor frame and the exhaust pipe and is discharged to the air conditioner system. Realizes variable capacity two-stage operation mode.

  As shown in FIG. 7, when the variable capacity single-stage operation mode is started, valve A, valve D and valve E are turned off, and valve B and valve C are turned on. The tail of the first slide slot 12 has an open structure, communicates with the high pressure of the frame body, and the lower end portion of the caulking pin 16a for locking the first slide 14 communicates with the intake port 13b of the first cylinder 11. When the valve C is turned on, the intake port 13b of the first cylinder 11 communicates with the high-pressure gas, the caulking pin 16a moves upward under the action of the elastic member 16b, that is, the spring force, and the first slide 14 moves toward the caulking pin. Locked by 16a, the first cylinder 11 is unloaded. The low pressure gas enters the intake port of the second cylinder 21 via the valve B, and the exhaust high pressure gas formed after the low pressure of the second cylinder 21 is compressed enters the interior of the compressor frame and the exhaust pipe to the air conditioning system. To be discharged. Realize variable capacity single stage operation mode.

  As shown in FIG. 8, when the variable displacement two-stage operation mode is activated, the valves A and D are turned on, and the valves B and C are turned off. The tail of the first slide slot 12 has an open structure, communicates with the high pressure of the frame, and the lower end portion of the caulking pin 16a for locking the first slide 14 is the intake port 13b of the first cylinder 11 which is a first-class cylinder The valve D was turned on, but communicated with the intake pressure. The caulking pin 16a moves downward under the action of the high and low pressure difference, and the first slide 14 operates normally. The intake port 13b of the first cylinder 11 communicates directly with the separator 80, and the intermediate exhaust pressure formed after the compression of the first cylinder 11, which is the first class cylinder, is replenished through the valve A by the pump baffle plate. After mixing in the medium pressure and enthalpy increasing device 60, the exhaust high pressure gas formed after the medium pressure of the second cylinder 21 enters the intake port of the second cylinder 21 and is compressed, Until it is discharged into the air conditioning system. Realizes variable capacity two-stage operation mode.

  As shown in FIG. 9, when the variable capacity single-stage operation mode is started, the valves A and D are turned off, and the valves B and C are turned on. The tail of the first slide slot 12 has an open structure, communicates with the high pressure of the frame, and the lower end portion of the caulking pin 16a for locking the first slide 14 does not communicate with the intake port 13b of the first cylinder 11. When the valve C is turned on, it communicates with the high pressure gas, the caulking pin 16a moves upward under the action of the spring force, the first slide 14 is locked by the caulking pin 16a, and the first cylinder 11 is unloaded. . The inlet 13b of the first cylinder 11 communicates with the separator 80, and the low pressure gas of the first cylinder 11 enters the low pressure gas and the high pressure class cylinder inlet through the valve B, and the low pressure of the second cylinder 21 is compressed. The exhaust high-pressure gas formed after this has entered the compressor frame and the exhaust pipe and is discharged to the air conditioner system. Realize variable capacity single stage operation mode.

  For convenience of mounting, in the above embodiment, the valves A and B and the valves C and D are replaced with three-way valves or four-way valves, respectively. The specific installation is as follows.

  Preferably, the valve is a three-way valve, provided in a conduit between the inlet of the enthalpy increasing device 60 and the inlet of the separator 80, and the outlet communicates with the inlet of the enthalpy increasing device 60, and the first inlet Is connected to the inlet of the separator 80, and the second inlet is a valve F connected to the first gas replenishment conduit, and a three-way valve, between the two-stage variable capacity compressor 50 and the separator 80. Provided in the pipeline, communicated with the inlet of the Zener device 70, the first inlet communicated with the outlet of the two-stage variable capacity compressor 50, the second inlet communicated with the outlet of the separator 80, and the outlet Communicates with the inlet of the Zener device 70, the outlet of the Zener device 70 communicates with the inlet 13b of the first cylinder 11, and the communication between the outlet of the enthalpy increasing device 60 and the two-stage variable capacity compressor 50. The second gas replenishment line is provided in the intake port of the second cylinder 21. A third gas replenishment conduit communicating with, and a fourth gas replenishment pipe in communication with the outlet of the first cylinder 11, provided with a valve E provided in the fourth gas replenishment pipe.

  Preferably, the valve is a three-way valve, and is provided in a pipe line between the inlet of the enthalpy increasing device 60 and the inlet of the separator 80, and the outlet communicates with the inlet of the enthalpy increasing device 60, and the first inlet Is connected to the inlet of the separator 80, and the second inlet is a valve F connected to the first gas replenishment conduit, and a three-way valve, between the two-stage variable capacity compressor 50 and the separator 80. Provided in the pipeline, communicated with the inlet of the Zener device 70, the first inlet communicated with the outlet of the two-stage variable capacity compressor 50, the second inlet communicated with the outlet of the separator 80, and the outlet And the valve G communicated with the inlet of the Zener device 70, and the inlet 13b of the first cylinder 11 is selectively communicated with the outlet of the Zener device 70 or the outlet of the separator 80.

  The present invention employs a two-stage enthalpy increasing compression technology to guarantee the amount to be increased at low temperatures and at the same time realizes stable switching between the two-stage and single-stage variable capacity modes by switching between high and low pressure by a variable capacity switching mechanism. And improve the energy efficiency of the air conditioning system in a light work environment. The claim improves the efficiency of the two-stage variable capacity compressor when operating in a light work environment, compensates for the energy efficiency deficiency of the two-stage variable capacity compressor during light load, and enters the single-stage variable capacity mode. It is possible to avoid the adverse effects of switching to stability and the oil pool of the slide slot where the cylinder is unloaded. The first slide slot 12 and the second slide slot 22 have an open structure, communicate with the frame body high pressure, and have higher reliability.

  As can be seen from the above, the embodiment according to the present invention achieves the following technical effects.

  Since the first via 12a is opened in the cylinder wall of the first cylinder 11 and high pressure gas is introduced into the first via 12a, the gas pressure at the upper end of the lock mechanism 16 is high pressure gas. Since the lower end of the lock mechanism 16 allows high pressure gas or low pressure gas to be selected, the gas pressure at the lower end of the lock mechanism 16 is switched between the high pressure gas and the low pressure gas, and the two-stage operation is performed under a condition where there is a gas pressure difference. The caulking pin locks the slide under conditions where there is no gas pressure difference, and single stage variable capacity operation is realized. The pressure difference received by the lock mechanism 16 is a pressure difference between high pressure and low pressure, and high and low pressure switching is performed to achieve stable switching between the two-stage and single-stage variable capacity modes. Solve the switching stability problem that may exist in

  The above are only preferred embodiments of the present invention, but are not intended to limit the present invention, and various changes and modifications can be made by those skilled in the art. Any amendments, equivalent replacements, revisions and the like should be included in the protection scope of the present invention without departing from the spirit and principle of the present invention.

10: 1st cylinder group
11: 1st cylinder
11a: Via
12: 1st slide slot
12a: 1st via
13a: Main inlet
13b: Inlet
14: 1st slide
15: Positioning slot
16: Lock mechanism
16a: Caulking pin
16b: Elastic tool
17: Flange
17a: Flange gas introduction hole
17b: 4th via
17c: 5th via
17e: Connection hole
18: Installation slot
19: Lower lid plate
19a: Lower lid gas introduction slot
20: 2nd cylinder group
21: 2nd cylinder
22: Second slide slot
23: Second slide
24: 6th via
30: 1st roller
40: Second roller
50: Two-stage variable capacity compressor
60: Enthalpy increase device
70: Zener device
80: Separator

Claims (15)

In the two-stage variable capacity compressor having the first cylinder group (10) and the second cylinder group (20) arranged along the axial direction,
The first cylinder group (10)
A first cylinder (11), a first slide slot (12), in communication with the first slide slot (12), said first cylinder (11) said first cylinder I along the radial direction of the ( A first cylinder (11) having a first via (12a) for introducing high-pressure gas by being provided on the cylinder wall of 11),
A first slide (14) having a positioning slot (15) in contact with the outer peripheral surface of the first roller (30) provided movably in the first slide slot (12) and provided centrifugally,
An upper end portion communicates with the first via (12a), and a lower end portion selectively inserts a high pressure gas or a low pressure gas so that the first slide is inserted into the positioning slot (15) and the first roller is inserted into the first roller. A lock position that locks to the center of rotation away from the lock mechanism, or a lock mechanism (16) that has a lock release position that comes out of the positioning slot (15),
The second cylinder group (20)
A second cylinder (21) having a second slide slot (22) and having a sixth via (24) communicating with the second slide slot (22); A second cylinder (21) for introducing a high-pressure gas by being provided on the cylinder wall of the second cylinder (21) along the radial direction ;
The second slide slot (22) is movably provided, and includes a second slide (23) that is in contact with the outer peripheral surface of the second roller (40) provided centrifugally. Features a two-stage variable capacity compressor. The locking mechanism (16)
The two-stage variable according to claim 1, characterized in that an upper end portion communicates with the first via (12a), and a lower end portion includes a caulking pin (16a) for selectively selecting a high pressure gas or a low pressure gas. Capacity compressor. The first cylinder (11)
An intake port (13b) that communicates with a lower end portion of the caulking pin (16a) so as to select a high-pressure gas or a low-pressure gas.
3. The two-stage variable capacity compressor according to claim 2, further comprising an elastic tool (16b) in contact with a lower end portion of the caulking pin (16a). The first cylinder group (10)
A mounting slot (18) provided along the axial direction of the two-stage variable capacity compressor is opened at a position corresponding to the positioning slot (15) provided below the first cylinder (11), 4. The two-stage variable capacity compressor according to claim 3, further comprising a flange (17) provided so that the caulking pin (16a) is movable in the mounting slot (18).   The two-stage according to claim 4, wherein the flange (17) has a flange gas introduction hole (17a) communicating with the first slide slot (12) via the intake port (13b). Variable capacity compressor. The first cylinder group (10)
Connected to the bottom of the flange (17), has a lower cover plate gas introduction slot (19a), and the intake port (13b) has the flange gas introduction hole (17a) and the lower cover plate gas introduction slot (19a). 6. The two-stage variable capacity compressor according to claim 5, further comprising a lower lid plate (19) communicating with a lower end portion of the caulking pin (16a) via a screw.   The two-stage according to claim 4, wherein a third via (17d) communicating with the air inlet of the second cylinder (21) is provided in a side wall of the silencer cavity of the flange (17). Variable capacity compressor.   The first cylinder (11) is further provided with a via (11a), the flange (17) is provided with a connection hole (17e) communicating with the sound deadening cavity, and the via (11a) is provided with the flange (17 5. The two-stage variable capacity compressor according to claim 4, wherein the two-stage variable capacity compressor is in communication with a silencing cavity.   The flange (17) is provided with a fourth via (17b) and a fifth via (17c), and the lower cover plate (19) of the first cylinder group (10) has a lower cover plate gas introduction slot (19a). The fourth via (17b) communicates with the lower end of the caulking pin (16a) via the fifth via (17c) and the lower cover plate gas introduction slot (19a), and the fourth via 5. The two-stage variable capacity compressor according to claim 4, wherein a high-pressure gas or a low-pressure gas is selectively introduced into (17b). An air conditioner system comprising a two-stage variable capacity compressor (50) which is the two-stage variable capacity compressor according to any one of claims 1 to 9 . The air conditioner system includes an enthalpy increasing device (60), a zener device (70) and a separator (80) in communication with the two-stage variable capacity compressor (50), the two-stage variable capacity compressor (50), And a valve for controlling on / off of the pipe line between the enthalpy increasing device (60), the Zener device (70) and the separator (80), and the lower end of the lock mechanism (16) has a high-pressure gas or Air conditioning system of claim 1 0 Add selectable low pressure gas, characterized in that. The valve is
A valve A provided in a first gas replenishment line communicating with a line between the inlet of the enthalpy increasing device (60) and the inlet of the separator (80);
Provided in a conduit between the inlet of the enthalpy increasing device (60) and the inlet of the separator (80), the first gas replenishment conduit is connected to the inlet of the valve B and the enthalpy increasing device (60). A valve B communicating with the pipe line between,
Provided in a pipeline between the outlet of the two-stage variable capacity compressor (50) and the inlet of the Zener device (70), the outlet of the Zener device (70) is the inlet (13b) of the first cylinder (11) ) Communicated with valve C,
Provided in a conduit between the inlet of the Zener device (70) and the outlet of the separator (80), and the inlet of the Zener device (70) communicates between the valve C and the valve D Valve D in communication with
Provided in a second gas replenishment line communicating between the outlet of the enthalpy increasing device (60) and the two-stage variable capacity compressor (50), the second gas replenishment line is connected to the second cylinder (21 ) And a fourth gas replenishing pipe communicated with the silencer cavity of the flange (17) of the first cylinder group (10), the fourth gas replenishing pipe Air conditioning system of claim 1 1 in which the valve E provided, with a, characterized in that to. The valve is
A valve A provided in a first gas replenishment line communicating with a line between the inlet of the enthalpy increasing device (60) and the inlet of the separator (80);
Provided in a conduit between the inlet of the enthalpy increasing device (60) and the inlet of the separator (80), the first gas replenishment conduit is connected to the inlet of the valve B and the enthalpy increasing device (60). A valve B communicating with the pipe line between,
A valve C provided in a pipeline between the outlet of the two-stage variable capacity compressor (50) and the inlet of the zener device (70);
Provided in a conduit between the inlet of the Zener device (70) and the outlet of the separator (80), the inlet of the Zener device (70) is a conduit communicating between the valve C and the valve D And a valve D in communication with
The first intake port of the cylinder (11) (13b), said through outlet or selectably communicating with the outlet of the separatory device (80) of the Zener device (70), that in claim 1 1, wherein The listed air conditioning system. The valve is
A three-way valve, provided in a conduit between the inlet of the enthalpy increasing device (60) and the inlet of the separator (80), the outlet communicating with the inlet of the enthalpy increasing device (60), A valve F having a first inlet communicating with the inlet of the separator (80) and a second inlet communicating with the first gas replenishment line;
A three-way valve, provided in a pipe line between the two-stage variable capacity compressor (50) and the separator (80), communicated with the inlet of the Zener device (70), the first inlet is In communication with the outlet of the two-stage variable capacity compressor (50), the second inlet is in communication with the outlet of the separator (80), the outlet is in communication with the inlet of the Zener device (70), A valve G in which an outlet of the Zener device (70) communicates with an intake port (13b) of the first cylinder (11);
Provided in a second gas replenishment line communicating between the outlet of the enthalpy increasing device (60) and the two-stage variable capacity compressor (50), the second gas replenishment line is connected to the second cylinder (21 ) And a fourth gas replenishment pipe communicating with the exhaust port of the first cylinder (11), and a valve E provided in the fourth gas replenishment pipe; Air conditioning system of claim 1 1, it is characterized in that comprises a. The valve is
A three-way valve, provided in a conduit between the inlet of the enthalpy increasing device (60) and the inlet of the separator (80), the outlet communicating with the inlet of the enthalpy increasing device (60), A valve F having a first inlet communicating with the inlet of the separator (80) and a second inlet communicating with the first gas replenishment line;
A three-way valve, provided in a pipe line between the two-stage variable capacity compressor (50) and the separator (80), communicated with the inlet of the Zener device (70), the first inlet is The valve G communicated with the outlet of the two-stage variable capacity compressor (50), the second inlet communicated with the outlet of the separator (80), and the outlet communicated with the inlet of the Zener device (70). And comprising
Claim 1 1, wherein the first air inlet of the cylinder (11) (13b) is passed through outlet or selectably communicating with the outlet of the separatory device (80) of the Zener device (70), it Air conditioning system.

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