WO1999064744A1 - Compresseur a volute de type a commande de capacite en plusieurs etapes - Google Patents
Compresseur a volute de type a commande de capacite en plusieurs etapes Download PDFInfo
- Publication number
- WO1999064744A1 WO1999064744A1 PCT/JP1999/002761 JP9902761W WO9964744A1 WO 1999064744 A1 WO1999064744 A1 WO 1999064744A1 JP 9902761 W JP9902761 W JP 9902761W WO 9964744 A1 WO9964744 A1 WO 9964744A1
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- WIPO (PCT)
- Prior art keywords
- scroll
- compressor
- opening
- scroll compressor
- stage
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/10—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
- F04C28/16—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using lift valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
Definitions
- the present invention relates to a multi-stage displacement control scroll compressor that enables a partial load operation in a low displacement range.
- FIGS. 8 and 9 a cross-sectional view taken along the line XX in FIG. 8) as a scroll compressor in which a bypass hole is provided in a spiral to enable a partial load operation
- This scroll compressor is an asymmetric scroll type scroll compressor in which the end of the spiral of the first scroll 1 is longer than the end of the spiral of the second scroll 2 by ⁇ (rad) in the expansion angle.
- a first fluid working chamber A formed by the inner surface of the first scroll 1 and the outer surface of the second scroll 2 and a second fluid working chamber formed by the outer surface of the first scroll 1 and the inner surface of the second scroll 2 The chamber B and the force S are alternately opened and closed with respect to the single low-pressure board 3, and approximately one turn from the outermost contact point E of the second scroll 2 with respect to the first scroll 1.
- a common bypass hole 4 common to the first fluid working chamber A and the second fluid working chamber B is provided at a point J that is rewound inward.
- the first scroll 1 is provided with a valve hole 5 communicating with the common bypass hole 4, and a bypass passage 6 communicating with the low-pressure port 3 is provided on a side portion of the valve hole 5.
- a stepped cylindrical bypass valve 7 for opening and closing the common bypass hole 4 is slidably provided in the valve hole 5.
- a coil spring 8 is locked at the step of the bypass valve 7, and the upper part of the bypass valve 7 is sealed by a lid member 9 and is separated from the discharge dome 10.
- the operating pressure chamber 11 is connected to an operating pressure line 15 selectively connected to a low pressure line 13 and a high pressure line 14 by an electromagnetic valve 12 via a joint pipe 16.
- Reference numeral 17 denotes a capillary tube for preventing a short circuit between the high-voltage line 14 and the low-voltage line 13, and reference numeral 18 denotes a case.
- 19 is a high pressure port.
- the common bypass hole 4 is provided at the point J where the outermost contact point E of the second scroll 2 with respect to the first scroll 1 is rewound inward by approximately one turn from the force E. I have. Therefore, when the solenoid valve 12 is closed and high-pressure gas is supplied to the operation pressure chamber 11 of the bypass valve 7 and the bypass valve 7 is closed, the discharge capacity becomes the full capacity (100%). On the other hand, when the solenoid valve 12 is opened and the low-pressure gas is supplied to the operating pressure chamber 11 of the bypass valve 7 to open the bypass valve 7, the position of the common bypass hole 4 becomes the compression start point.
- the discharge capacity is about 60% of the total capacity. Thus, the discharge capacity of the scroll compressor can be switched between 100% and 60%.
- the conventional multi-stage capacity-controlled scroll compressor has the following problems. First, there is a problem that the operation range is limited because the volume ratio Vr becomes considerably small during the partial load operation of 50% or less.
- the volume ratio Vr of the compressor is required to be 1 or more even at a partial load.
- Increasing the specific volume ratio Vr lowers the critical partial load factor and enables partial load operation of 50% or less.However, in that case, the efficiency at full load decreases. It is not possible to increase the specific volume ratio Vr.
- a multi-type air conditioner in which one outdoor unit handles multiple indoor units, it is 20 ° /. 330% load operation is always required, and when the conventional multi-stage capacity-controlled scroll compressor is applied to the multi-type air conditioner, the operation of the compressor is frequently stopped.
- problems such as the inability to set optimal air conditioning conditions occur.
- common bypass holes may be provided at the center of the first and second scrolls.
- the rigidity is reduced.
- the gas load in the spirals of the first and second scrolls is significantly reduced, and the balance between the gas load and the centrifugal load of the second scroll on the movable side is lost, resulting in poor lubrication in pin bearings (not shown). And the like, and the second scroll may be overturned. Disclosure of the invention
- a multi-stage displacement control scroll compressor includes a first bypass passage formed at a predetermined position in a compression chamber and returning compressed gas in a fluid working chamber to a suction port; A first opening / closing means for opening / closing the bypass passage, a second bypass passage communicating between the discharge side and the suction side, and opening / closing the second bypass passage. A second opening / closing means is provided.
- the second opening / closing means opens and closes the second bypass passage
- the load on the compressor is switched between 100% and the first predetermined percentage.
- the first opening / closing means opens and closes the first bypass passage
- the discharge capacity of the compressor is switched between 100% and the second predetermined%. Therefore, by combining the opening and closing of the first opening / closing means and the opening / closing of the second opening / closing means, the substantial load of the compressor can be switched to four stages.
- the discharge capacity of the compressor is switched to only the second predetermined percentage by the first opening / closing means. Therefore, the fixed volume ratio of the compressor and the second predetermined percentage are set so that the volume ratio when the discharge capacity of the compressor reaches the second predetermined percentage becomes 1 or more. If this is done, keep the volume ratio at 1 or more even when the actual load on the compressor is minimized. And reliable multi-stage load control is performed.
- the first scroll and the second scroll forming the compression chamber have a spiral end of one scroll larger than a spiral end of the other scroll. It is characterized by exhibiting an asymmetric spiral shape with an extension angle of 180 degrees.
- the first fluid working chamber formed by the inner surface of the first scroll and the outer surface of the second scroll, and the second fluid formed by the outer surface of the first scroll and the inner surface of the second scroll are alternately formed at the same position of the first bypass passage. Therefore, the high-pressure gas in each fluid working chamber is returned to the suction port from only one first bypass passage.
- the second bypass passage is provided outside the compressor body. According to the above configuration, the second bypass passage and the second opening / closing means do not need to be formed in the compressor main body, but may be formed between the discharge line and the suction line. Therefore, a multi-stage displacement control scroll compressor is manufactured at low cost.
- One embodiment of the multi-stage displacement control scroll compressor according to the present invention is characterized in that a plurality of the second bypass paths and a plurality of second opening / closing means are provided.
- a plurality of the second bypass passages and the second opening / closing means are provided. Therefore, by combining the opening and closing of each of the second opening and closing means and the opening and closing of the first opening and closing means, multi-stage load control of eight or more stages is performed.
- the second opening / closing means for opening / closing the second bypass passage is a motor-operated valve that can be controlled to an arbitrary opening.
- the opening of the second bypass passage is set to an arbitrary opening, so that the load on the compressor is switched between 100% and an arbitrary%. Therefore, the substantial load of the compressor can be switched to any multi-stage by a combination of the opening / closing control of the first opening / closing means and the opening control of the second opening / closing means.
- the second opening / closing means includes a difference between a pilot pressure and the suction side pressure or the discharge side pressure. It is characterized by being operated by pressure.
- control system of the second opening / closing means can be simply configured, and the multi-stage capacity control scroll compressor is manufactured at low cost.
- one embodiment of the multi-stage displacement control scroll compressor according to the present invention is characterized in that a liquid injection pipe for cooling a low-pressure chamber communicating with the suction port is provided.
- the low-pressure chamber and the drive motor are cooled by the cooling liquid injected from the liquid injection pipe.
- the rise in the temperature of the low-pressure chamber caused by returning the high-pressure gas in the compression chamber to the suction port is prevented, and the temperature of the discharge gas and the motor is reduced.
- the first opening / closing means and the second opening / closing means are operated by a pipe pressure, and a pilot of the first opening / closing means is provided.
- the port and the pilot port of the second opening / closing means are characterized by being connected to each pilot line via one joint fitting provided at the upper center of the compressor body.
- One embodiment of the multi-stage capacity control scroll compressor according to the present invention includes a standard scroll compressor having a fixed discharge capacity, wherein the multi-stage capacity control scroll compressor and the standard scroll compressor are provided. And a compressor connected in parallel.
- the multi-stage displacement scroll compressor and the standard scroll compressor constitute a twin multi-stage displacement scroll compressor. Therefore, switching to the two load states of unloading and full load by the above-mentioned standard scroll compressor, and n-stage load switching by the multi-stage capacity control scroll compressor By changing the load, the load is switched in 2 X n stages. In this way, load control is performed in multiple stages.
- the first opening / closing means operates at a pilot pressure, and a pilot port of the first opening / closing means and the pilot port. It is characterized in that it is connected to the fittings for connecting the pilot line to the port port with screws.
- the pilot port of the first opening / closing means and the fitting are securely connected by the taper screw. Therefore, a mounting structure that is resistant to vibration of the joint fitting and has high leakage resistance and heat resistance is realized.
- FIG. 1 is a partial cross-sectional view of a first embodiment of a multistage displacement control scroll compressor according to the present invention.
- FIG. 2 is a partial cross-sectional view when the discharge capacity of the multi-stage displacement control squeal compressor shown in FIG. 1 is 30%.
- FIG. 3 is a partial cross-sectional view of a multi-stage displacement scroll compressor different from FIG.
- FIG. 4 is a cross-sectional view of a multi-stage capacity control squeal compressor according to the second embodiment.
- FIG. 5 is a partial cross-sectional view of a multi-stage displacement control scroll compressor different from FIG.
- FIG. 6 is a configuration diagram of a multi-stage capacity control scroll compressor according to the third embodiment.
- FIGS. 7A and 7B are diagrams showing a mounting structure different from the mounting structure of the joint pipe to the lid member in FIGS. 1 and 3 to 5.
- FIG. 8 is a partial cross-sectional view of a conventional load control scroll compressor.
- FIG. 9 is a cross-sectional view taken along the line XX of FIG. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a partial cross-sectional view of a multi-stage displacement control scroll compressor according to a first embodiment.
- a second bypass valve 4 for selectively communicating between the suction side communicating with the low-pressure port 23 and the discharge side in the discharge dome 30 outside the spiral in the first scroll 21. 0 is provided.
- the bypass valve 27 is referred to as a first bypass valve
- the bypass valve 40 is referred to as a second bypass valve.
- the second bypass valve 40 has a cylindrical cylinder portion 42 protruding from the high pressure side surface of the end plate 41 of the first scroll 21, and a cylinder portion 42 having a ball at the tip. It is roughly constituted by a sliding valve body 43 and a spring 44 contracted between the valve body 43 and the cylinder part 42.
- the low pressure side end of the cylinder portion 42 has a shaft hole communicating with the inside of the cylinder portion 42, and a mounting portion 42a provided with a mounting screw on the outer peripheral surface.
- the end plate 41 is provided with a through hole 45 penetrating the end plate 41, and a mounting hole for fitting the mounting portion 4 2a of the cylinder portion 42 to the upper end of the through hole 45. 45 5a is provided. Then, by screwing the mounting portion 42 a of the cylinder portion 42 into the mounting hole 45 a of the end plate 41, the cylinder portion 42 protrudes from the surface on the high pressure side of the end plate 41 and is fixed. The suction side and the inside of the cylinder portion 42 communicate with each other through the through hole 45 and the shaft hole of the mounting portion 42a.
- the upper part of the cylinder part 42 is partitioned from the discharge dome 30 to form an operation pressure chamber 46.
- the operating pressure chamber 46 contains a second solenoid valve.
- An operation pressure line 48 selectively communicated with the low pressure line 33 and the high pressure line 34 by 47 is connected via a joint pipe 49.
- the solenoid valve 32 is referred to as a first solenoid valve
- the solenoid valve 47 is referred to as a second solenoid valve.
- Reference numeral 50 denotes a capillary tube for preventing a short circuit between the high voltage line 34 and the low voltage line 33.
- a step portion having a small diameter on the low pressure side is provided on the outer peripheral surface of the valve body 43, and a spring 44 is mounted on the small diameter portion.
- a through hole 51 communicating the inside and the outside in the radial direction is provided in the axial middle portion of the cylinder portion 42, and when the valve body 43 slides to the lowermost position, the valve body 43 is closed.
- the large-diameter portion closes the through hole 51 of the cylinder portion 42.
- the size of the through hole 51 is set such that the load on the compressor is, for example, 50%.
- the valve body 4 When the second solenoid valve 47 is closed and high-pressure gas is supplied to the operating pressure chamber 46 of the second bypass valve 40 and the valve body 43 is slid downward, the valve body 4 The large diameter portion of 3 closes the through hole 51, and the load of the compressor is set to 100% (hereinafter, the load thus set is referred to as a set load).
- the second solenoid valve 47 is opened to supply low-pressure gas to the operating pressure chamber 46 of the second bypass valve 4 ⁇ and the valve body 43 is slid upward, the valve body 4 The through hole 51 of 3 is opened, and the set load of the compressor becomes 50%. That is, in the present embodiment, the second bypass passage is constituted by the through hole 45, and the second opening / closing means is constituted by the second bypass valve 40.
- the multi-stage displacement control scroll compressor having the above-described configuration enables multi-stage load control as follows by controlling the opening and closing of the first bypass valve 27 and the second bypass valve 40.
- the first scroll 21 has a point J (see FIG. 9), which is rewound inward by approximately one turn from the outermost contact point E of the second scroll 22 with respect to the first scroll 21. ),
- the first scroll 21 of the asymmetric spiral scroll compressor has the second scroll 2 with respect to the first scroll 21.
- the discharge capacity is 60 by communicating with the low pressure port 23.
- a first bypass valve 27 for setting / 0 is provided.
- a second bypass valve 40 for selectively setting the suction side and the discharge side to communicate with each other outside the spiral of the first scroll 21 to set the set load of the compressor at 50% is provided.
- the bypass valve 40 is opened and closed. Therefore, if the second bypass valve 40 and the first bypass valve 27 are closed, the actual load on the compressor can be reduced to 100%. Also, if the second bypass valve 40 is closed and the first bypass valve 27 is opened, the actual load on the compressor can be reduced to 60%. Further, when the second bypass valve 40 and the first bypass valve 27 are opened, the actual load of the compressor can be reduced to 30%.
- the multi-stage capacity control scroll compressor having the above-described configuration can
- a conventional asymmetric spiral type multi-stage capacity control scroll having a bypass valve (27) is provided with a through hole (45) penetrating the end plate (41) outside the spiral of the first scroll (21) in the compressor.
- a simple configuration can be achieved simply by screwing the mounting portion 42a of the cylinder portion 42 to the upper end.
- the second scroll valve 40 provided outside the spiral does not require the same precision as the first scroll valve 27 provided inside the spiral. Therefore, it can be provided inexpensively with a small number of parts.
- FIG. 3 is a partial cross-sectional view showing a modified example of the multi-stage capacity control squeal compressor shown in FIG.
- the operating pressure line 67, the high pressure port 68, the second bypass valve 69, the through hole 70, the second solenoid valve 71, and the operating pressure line 72 are used in the multistage displacement control scroll compressor shown in FIG.
- the first and second bypass valves 63 and 72 are connected via one joint pipe 74 attached to the center of the top surface of the casing 73 with the operating pressure lines 67 and 72. 6 Connected to 9.
- Two holes 74a and 74b are provided alternately in the joint pipe 74, and the operation pressure line 67 is connected to the first hole 74a by the first pipe bolt joint 75.
- an operating pressure line 72 is connected to the second hole 74 b by a second pipe bolt joint 76.
- an operating pressure chamber 78 of the first bypass valve 63 is connected to the first hole 74 a by a first pipe 77, and a second bypass valve 79 is connected to the second hole 74 b by a second pipe 79.
- the operation pressure chamber 80 of 69 is connected.
- FIG. 4 is a partial cross-sectional view illustrating a multi-stage displacement control scroll compressor according to the second embodiment.
- the bypass valve 84, the first solenoid valve 85, the low pressure line 86, the high pressure line 87, the operating pressure line 88, the joint pipe 89 and the high pressure port 90 are the multi-stage displacement control scrolls shown in Fig. 1.
- First scroll 21, second scroll 22, low pressure port 23, first bypass valve 27, first solenoid valve 32, low pressure line 33, high pressure line 34, operating pressure line 35 in compressor Has the same configuration as the joint pipe 36 and the high-pressure port 39, and operates similarly.
- a second bypass valve 40 is provided above a through hole 45 formed in the end plate 41 of the first scroll 21, and a second bypass valve 40 is provided.
- the set load of the compressor is switched between 100% and 50% by selectively opening and closing the suction port and the suction side and the discharge side.
- the selective communication between the suction side and the discharge side can be performed by other methods.
- the low-pressure line 86 and the high-pressure line 87 are connected by a bypass passage 93 provided with a second solenoid valve 91 and a capillary tube 92, so that the suction side and the discharge side are connected. It allows selective communication with the side.
- the above-mentioned capillary tube 92 prevents a short circuit between the high-pressure line 87 and the low-pressure line 86.
- the second solenoid valve 91 is configured so that the set load of the compressor when the second solenoid valve 91 is opened is 50% will be described as an example of the multi-stage capacity control scroll compressor according to the present embodiment. The operation will be described.
- the multi-stage capacity control scroll compressor performs multi-stage load control as follows by controlling the opening and closing of the first solenoid valve 85 and the second solenoid valve 91.
- the first solenoid valve 85 is closed in this state, the first bypass valve 84 is closed, and the discharge capacity becomes 100%. Therefore, the actual load of the compressor in this case is 100%.
- the first solenoid valve 85 is opened, the first bypass valve 84 is opened, and the discharge capacity becomes 60%. Therefore, the actual load of the compressor in this case is 60%.
- the set load of the compressor becomes 50%.
- the volume ratio Vr at the time of the minimum capacity operation is set to a value equal to or more than “1”, and a highly reliable partial load operation of 50% or less is performed. You can do it.
- the suction side and the discharge side are connected by a very simple method of connecting the low pressure line 86 and the high pressure line 87 with a bypass passage 93 provided with a second solenoid valve 91. It allows selective communication with the side. Therefore, unlike the first embodiment, there is no need to provide the second bypass valve 40 in the compressor main body, and the cost can be further reduced.
- the set load of the compressor can be arbitrarily changed in multiple stages. Therefore, in this case, by combining the opening and closing of the first solenoid valve 85, it is possible to perform a reliable multi-stage load control of 50% or less with high reliability.
- FIG. 5 is a partial cross-sectional view showing a modification of the multi-stage capacity control squeal compressor shown in FIG.
- First scroll 101, second scroll 1 ⁇ 2, low-pressure port 103, bypass valve 104, first solenoid valve 105, low-pressure line in the multi-stage displacement control scroll compressor shown in Fig. 5 106, high-pressure line 107, operating pressure line 108, fitting tube 109 and high-pressure port 110 are the first scroll in the multi-stage capacity control scroll compressor shown in Fig. 1.
- 2nd scroll 22, low pressure port 23, 1st no-pass valve 27, 1st solenoid valve 32, low pressure line 33, high pressure line 34, operating pressure line 35, joint pipe 36 and high pressure port It has the same configuration as 39 and operates similarly. However, it is assumed that the bypass valve 104 is provided at a position where the discharge capacity is set to 50%.
- the low-pressure line 106 and the high-pressure line 107 are connected to each other by a bypass passage 1 provided with a second solenoid valve 111 for setting the set load of the compressor to 75% when the compressor is opened. 1 3 and the bypass passage 1 1 4 with the 3rd solenoid valve 1 1 2 to set the load of the compressor at the time of opening to 65%. Then, by controlling the opening and closing of the first solenoid valve 105, the second solenoid valve 111, and the third solenoid valve 112, multi-stage load control is performed as follows.
- the set load of the compressor becomes 100% by closing the second solenoid valve 111 and the third solenoid valve 112.
- the first bypass valve 104 closes, and the discharge capacity becomes 100%. Therefore, the actual load of the compressor in this case is 100 ° / 0 .
- the first solenoid valve 105 is opened, the first bypass valve 104 is opened and the discharge capacity becomes 50%. Therefore, the actual load on the compressor in this case is 50%.
- the set load of the compressor becomes 75%.
- the first solenoid valve 105 is closed in this state, the discharge capacity becomes 100%. Therefore, the actual load of the compressor in this case is 75%.
- FIG. 6 is a configuration diagram of a multi-stage capacity control scroll compressor according to the third embodiment.
- a multi-stage capacity control scroll compressor (hereinafter referred to as a capacity controller) having any one of the above embodiments and a scroll compressor (hereinafter referred to as a non-capacity control) having a standard structure (non-capacity control) , Standard equipment) to perform high multi-stage load control of 50% or less.
- the standard compressor 1 2 1 is a non-capacity control type scroll compressor that has a maximum discharge capacity 1/2 that of the maximum capacity required by the system to be supplied with high-pressure gas (hereinafter simply referred to as the required maximum capacity). is there.
- the capacity controller 122 is, for example, a multi-stage capacity control squeal compressor shown in FIG. 5, and has a maximum discharge capacity of 112, which is the required maximum capacity of the system.
- the capacity controller 122 controls the opening and closing of the bypass valve (see Fig. 5) by opening and closing the first solenoid valve 123 to switch the discharge capacity between 100% and 50%.
- the set load of the compressor is switched between 100% and 75% by opening and closing the second solenoid valve 124, and the compressor is opened and closed by opening and closing the third solenoid valve 125.
- the set load is switched between 100% and 65%.
- the capacity controller 122 has a nozzle, for example, outside the spiral of the first scroll.
- a liquid injection pipe 126 is provided, and a liquid line 127 from the system side is connected.
- the capacity is 25% of the required maximum capacity.
- the real load of the capacity controller 122 is set to 75%, the actual discharge capacity to the system is 37.5% of the required maximum capacity. Also, when the real load of the capacity controller 122 is set to 100%, the real discharge capacity to the system becomes 50% of the required maximum capacity.
- the standard machine 122 is brought into a full load (100%) state.
- the capacity controller 122 sets the substantial load to 24% as described above.
- the real load of the capacity controller 122 is set to 50%
- the real discharge capacity to the system will be 75% of the required maximum capacity.
- the real load of the capacity controller 122 is set to 75%, the real discharge capacity to the system will be 87.5% of the required maximum capacity.
- the real load of the capacity controller 122 is set to 100%, the real discharge capacity to the system becomes 100% of the required maximum capacity.
- a liquid injection pipe 126 is provided in the capacity controller 122 to inject a liquid refrigerant from the system side. Therefore, the injected liquid refrigerant flows down from the compression section composed of the first scroll and the second scroll to the motor side that rotationally drives the second scroll, and the compression section and the motor are cooled. In this way, the discharge gas and motor temperature are reduced, and the operable range is expanded.
- the mounting of the liquid injection pipe to the capacity controller can be applied to the multi-stage capacity controller scroll compressor in the first and second embodiments.
- the standard machine 1 2 1 having the maximum discharge capacity of 1/2 of the maximum capacity required by the system and the maximum discharge capacity of 1/2 of the maximum capacity required by the system are used.
- a twin-stage multi-stage capacity control scroll compressor is composed of the capacity controller 1 2 and Therefore, at the same time as switching the standard machine 12 1 between the unload state and the full load state, the effective load of the capacity controller 122 is switched to 24%, 50%, 75%, and 100%.
- the actual displacement of the twin multi-stage scroll compressors to the system is 12%, 25%, 37.5%, 50%, 62%, 7% of the required maximum capacity of the system. It is possible to switch to 8 levels of 5%, 87.5% and 100%.
- the real discharge capacity from the twin multi-step capacity control scroll compressor to the system can be switched to 16 levels.
- the maximum discharge capacity of the standard unit 122 and the capacity control unit 122 is assumed to be 1/2 of the required maximum capacity of the system, but is not limited to this. Instead, it should be set appropriately according to the required actual discharge capacity.
- joint pipe 3 6 connected to the operating chamber 3 1 of the Ebaipasu valve 2 7 in has its distal end to the lid member (2) 9 It is installed by inserting it into the drilled hole and sealed with O-ring 52.
- a mounting structure as shown in FIGS. 7A and 7B is adopted.
- a male thread 1 32 is provided at the taper at the end of the joint pipe 1 31.
- a female screw 134 is provided in the tapered hole of the lid member 133. Then, the tapered portion at the tip of the joint pipe 13 1 is screwed into the tapered hole of the lid member 133, and the joint pipe 13 1 is attached to the lid member 133. By sealing with a taper screw in this way, a mounting structure that is resistant to vibration of the joint pipe 13 1 and has high leakage resistance and heat resistance can be obtained.
- the joint pipe main body 135 and the pipe body 136 are separated, and the pipe body 136 is formed integrally with the lid member 137.
- the tip of the tube 136 is made to protrude through the hole 13 of the casing 138 and is welded at the hole 13. Then, the tapered hole of the joint pipe main body 135 is screwed into the taper portion at the tip of the pipe 136.
- the tube 1 36 configured integrally with the lid member 1 37, by coupling with the joint tube body 1 3 5 and tapered thread, the tube 1 36 strong leak resistance and heat resistance to vibration of The height and mounting structure can be obtained.
- the end of the spiral of the first scroll 21, 61, 81, 101 is more than the end of the spiral of the second scroll 22, 62, 82, 102.
- the outermost contact point E of the second scroll 22, 62, 82, 102 with respect to the first scroll 21, 61, 8 1, 10 1 is extended by ⁇ (rad) by the extension angle,
- a so-called asymmetric spiral scroll compressor is described as an example.
- the present invention is not limited to this, and may be applied to a so-called symmetric scroll type scroll compressor in which the spiral ends of a pair of symmetric scrolls are shifted from each other by ⁇ (rad) at the expansion angle. Applicable.
- the first fluid working chamber A formed by the inner surface of the first scroll and the outer surface of the second scroll, the outer surface of the first scroll, and the inner surface of the second scroll Since the second fluid working chamber B is formed not in the same position but in opposition to each other, the first bypass valve for changing the displacement of the compressor is provided in the first fluid working chamber A. And the second fluid working chamber B need to be provided at positions facing each other.
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Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020007001426A KR100601270B1 (ko) | 1998-06-12 | 1999-05-26 | 다단계 용량제어 스크롤 압축기 |
EP99922489A EP1004773B1 (en) | 1998-06-12 | 1999-05-26 | Multi-stage capacity control scroll compressor |
DE69943017T DE69943017D1 (de) | 1998-06-12 | 1999-05-26 | Spiralverdichter mit mehrstufigem mengenregler |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10165022A JP2974009B1 (ja) | 1998-06-12 | 1998-06-12 | 多段階容量制御スクロール圧縮機 |
JP10/165022 | 1998-06-12 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09462207 A-371-Of-International | 2000-01-04 | ||
US10/052,530 Continuation US6478550B2 (en) | 1998-06-12 | 2002-01-23 | Multi-stage capacity-controlled scroll compressor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999064744A1 true WO1999064744A1 (fr) | 1999-12-16 |
Family
ID=15804366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/002761 WO1999064744A1 (fr) | 1998-06-12 | 1999-05-26 | Compresseur a volute de type a commande de capacite en plusieurs etapes |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1004773B1 (ja) |
JP (1) | JP2974009B1 (ja) |
KR (1) | KR100601270B1 (ja) |
CN (1) | CN1094566C (ja) |
DE (1) | DE69943017D1 (ja) |
ES (1) | ES2356224T3 (ja) |
WO (1) | WO1999064744A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6478550B2 (en) | 1998-06-12 | 2002-11-12 | Daikin Industries, Ltd. | Multi-stage capacity-controlled scroll compressor |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
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CN100343527C (zh) * | 2002-12-25 | 2007-10-17 | 乐金电子(天津)电器有限公司 | 具有防真空能力的涡轮压缩机 |
KR100547322B1 (ko) | 2003-07-26 | 2006-01-26 | 엘지전자 주식회사 | 용량 조절식 스크롤 압축기 |
KR100557056B1 (ko) | 2003-07-26 | 2006-03-03 | 엘지전자 주식회사 | 용량 조절식 스크롤 압축기 |
KR100695822B1 (ko) * | 2004-12-23 | 2007-03-20 | 엘지전자 주식회사 | 스크롤 압축기의 계단형 용량 가변장치 |
KR100585811B1 (ko) | 2004-12-31 | 2006-06-07 | 엘지전자 주식회사 | 용량 가변형 스크롤 압축기 |
US20090035167A1 (en) | 2007-08-03 | 2009-02-05 | Zili Sun | Stepped scroll compressor with staged capacity modulation |
JP5040907B2 (ja) * | 2008-09-30 | 2012-10-03 | ダイキン工業株式会社 | 冷凍装置 |
US8328531B2 (en) * | 2009-01-22 | 2012-12-11 | Danfoss Scroll Technologies, Llc | Scroll compressor with three-step capacity control |
JP5489142B2 (ja) * | 2011-02-22 | 2014-05-14 | 株式会社日立製作所 | スクロール圧縮機 |
CN106286292B (zh) * | 2015-05-27 | 2018-12-04 | 珠海格力节能环保制冷技术研究中心有限公司 | 压缩组件、变容量涡旋压缩机及空调器 |
CN105275804B (zh) * | 2015-10-15 | 2017-10-10 | 珠海格力节能环保制冷技术研究中心有限公司 | 涡旋压缩机的变容机构及涡旋压缩机 |
KR101747175B1 (ko) | 2016-02-24 | 2017-06-14 | 엘지전자 주식회사 | 스크롤 압축기 |
KR101800261B1 (ko) | 2016-05-25 | 2017-11-22 | 엘지전자 주식회사 | 스크롤 압축기 |
KR101839886B1 (ko) | 2016-05-30 | 2018-03-19 | 엘지전자 주식회사 | 스크롤 압축기 |
US10563891B2 (en) * | 2017-01-26 | 2020-02-18 | Trane International Inc. | Variable displacement scroll compressor |
JP6489166B2 (ja) * | 2017-07-05 | 2019-03-27 | ダイキン工業株式会社 | スクロール圧縮機 |
CN211343341U (zh) * | 2018-09-19 | 2020-08-25 | 艾默生环境优化技术(苏州)有限公司 | 涡旋压缩机 |
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JPH0979152A (ja) * | 1995-09-11 | 1997-03-25 | Sanyo Electric Co Ltd | スクロール圧縮機 |
JPH09170573A (ja) * | 1995-12-19 | 1997-06-30 | Daikin Ind Ltd | スクロール形流体機械 |
Family Cites Families (8)
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US3985472A (en) * | 1975-04-23 | 1976-10-12 | International Harvester Company | Combined fixed and variable displacement pump system |
JPH0744775Y2 (ja) * | 1987-03-26 | 1995-10-11 | 三菱重工業株式会社 | 圧縮機の容量制御装置 |
JPH0615872B2 (ja) * | 1987-06-30 | 1994-03-02 | サンデン株式会社 | 可変容量型スクロ−ル圧縮機 |
JP2656627B2 (ja) * | 1989-08-02 | 1997-09-24 | 株式会社日立製作所 | 密閉形スクロール圧縮機の給油装置 |
JP3100452B2 (ja) * | 1992-02-18 | 2000-10-16 | サンデン株式会社 | 容量可変型スクロール圧縮機 |
US5451146A (en) * | 1992-04-01 | 1995-09-19 | Nippondenso Co., Ltd. | Scroll-type variable-capacity compressor with bypass valve |
JP3132888B2 (ja) * | 1992-04-01 | 2001-02-05 | 株式会社日本自動車部品総合研究所 | スクロール型可変容量圧縮機 |
US5678985A (en) * | 1995-12-19 | 1997-10-21 | Copeland Corporation | Scroll machine with capacity modulation |
-
1998
- 1998-06-12 JP JP10165022A patent/JP2974009B1/ja not_active Expired - Fee Related
-
1999
- 1999-05-26 DE DE69943017T patent/DE69943017D1/de not_active Expired - Lifetime
- 1999-05-26 WO PCT/JP1999/002761 patent/WO1999064744A1/ja active IP Right Grant
- 1999-05-26 ES ES99922489T patent/ES2356224T3/es not_active Expired - Lifetime
- 1999-05-26 CN CN99800912A patent/CN1094566C/zh not_active Expired - Fee Related
- 1999-05-26 EP EP99922489A patent/EP1004773B1/en not_active Expired - Lifetime
- 1999-05-26 KR KR1020007001426A patent/KR100601270B1/ko not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0979152A (ja) * | 1995-09-11 | 1997-03-25 | Sanyo Electric Co Ltd | スクロール圧縮機 |
JPH09170573A (ja) * | 1995-12-19 | 1997-06-30 | Daikin Ind Ltd | スクロール形流体機械 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6478550B2 (en) | 1998-06-12 | 2002-11-12 | Daikin Industries, Ltd. | Multi-stage capacity-controlled scroll compressor |
Also Published As
Publication number | Publication date |
---|---|
KR20010022824A (ko) | 2001-03-26 |
EP1004773A1 (en) | 2000-05-31 |
KR100601270B1 (ko) | 2006-07-13 |
CN1272906A (zh) | 2000-11-08 |
EP1004773B1 (en) | 2010-12-08 |
ES2356224T3 (es) | 2011-04-06 |
JPH11351167A (ja) | 1999-12-21 |
JP2974009B1 (ja) | 1999-11-08 |
EP1004773A4 (en) | 2004-05-12 |
CN1094566C (zh) | 2002-11-20 |
DE69943017D1 (de) | 2011-01-20 |
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