TW564289B - Multiple stage compression type rotary compressor and method for making same - Google Patents

Abstract

A multiple stage compression type rotary compressor has an electric driving element in a sealed casing, a first and a second rotary elements wherein a coolant gas is compressed by the first rotary element and delivered to the sealed casing, and delivered coolant gas under an intermediate pressure is compressed by the second rotary element. The multiple stage compression type rotary compressor is characterized in that the second rotary element has a cylinder and a roller which is filled on an eccentric part of a spindle of the electric driving element so that the roller rotates eccentrically in the cylinder, a vane abutting the roller and separating the interior of the cylinder into a low pressure chamber side and a high pressure chamber side, a back pressure chamber constantly urging the vane towards the roller, a passage communicating a coolant outlet port of the second rotary element and the back pressure chamber, and a pressure regulator valve for regulating the pressure of the coolant applied onto the back pressure chamber through the passage.

Description

564289 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a multi-stage compression type rotary compressor, which is compressed by the rotary compression element of 1 and sent out of a sealed container ^ 2 of the rotary compression element and the compression error + ^ rotary compressor. Multi-stage compression type [prior art] The previous multi-stage compression type rotary compressor, ^ Especially, the internal intermediate pressure type multi-stage compression type rotary compressor is a refrigerant pain ▽ hoof milk from the first rotary compression element The suction port is sucked into the low pressure chamber side of the cylinder,

The main w is compressed to an intermediate pressure by the action of the roller toilet K, and is sent from the high-pressure chamber side opening of the gas rainbow 'and out of the muffler chamber to the closed container. Then, the refrigerant gas with an internal pressure of $ 150 is sucked into the low-pressure chamber side of the cylinder by the clear lambda of the second rotary compression element and the inlet, and it is smashed by the action of the roller and the fin. The compression of the segment becomes the high-temperature and high-pressure refrigerant gas, which is then discharged from the high-pressure chamber side through the outlet and w to the radiator and released by the expansion valve to the tomb. After the heat is absorbed, it is repeatedly sucked into the first rotary compression element. The cycle. [Problems to be Solved by the Invention] The wings of the multi-stage compression type rotary compressor are installed in a groove provided in the radial direction of the cylinder so that they can move freely. The fins are pushed against the rollers to separate the inside of the cylinder into a low-pressure chamber side and a high-pressure chamber side. At the same time, a spring that urges the fins to the roller side is provided behind the fins, and the fins are also moved to the roller side Rotary compressor of the middle pressure type which is installed in the groove and communicates with the back pressure chamber connected to the high pressure chamber of the cylinder in the groove, and the second rotary compression element

313801 .ptd Page 8 564289 V. Description of the invention (2) The internal pressure of the cylinder is higher than the internal pressure of the closed container, so the pressure on the refrigerant sending side of the second rotary compression element is applied to push the second Back pressure chamber of the wing of the rotary compression element. However, when 'the refrigerant of such a multi-stage compression rotary compressor uses a high-low level refrigerant' such as carbon dioxide (CO 2) as the refrigerant, as shown in FIG. 6 'the refrigerant sending pressure reaches the second rotation of the high pressure (HP) When the element is compressed, it reaches 12MPaG. Therefore, when the historical force of the refrigerant delivery side of the second rotary compression element is applied to the back pressure chamber, the pressure of the fins against the rollers will be higher than the necessary high pressure, so that the sliding part of the fin tips and the outer periphery of the rollers will be burdened It is heavy, causing significant wear and damage to the wings and rollers. &Quot; The present invention is made to solve these technical problems, and its purpose is to improve the durability of the fins and rollers of the multi-stage compression rotary compressor with internal intermediate pressure, and prevent the fins and rollers from being damaged. . , Α, and 'In order to reduce the differential pressure (pressure difference) of the second stage, the thickness (height) of the cylinder of the first rotary compression element was changed so that the exhaust volume of the second rotary compression element was smaller than Exhaust capacity of the first rotary compression element However, according to such a setting method, since the thickness (height) of the first cylinder is increased, the cylinder material of the first rotary compression element and the & Eccentric parts, rollers and other components. In addition, due to the increase in the thickness (height) of the cylinder, the thickness of the rotary compression mechanism (increased in height) will increase the size of the entire multi-stage compression rotary compressor. It will be difficult to miniaturize the compressor by 5 mm. Problem.

564289 V. Description of the invention (3) The present invention is to solve such a problem of the prior art, and to reduce the manufacturing cost by providing as few components as possible, and to prevent the size of the compressor from increasing. In terms of the manufacturing method of the multi-stage compression rotary compressor with the most suitable exhaust volume ratio, it can be easily set. Furthermore, when a refrigerant with a high and low pressure difference, such as carbon dioxide (CO2), is used as the refrigerant, the pressure of the sent refrigerant is as shown in Fig. 7, and the second rotary compression element forming the high pressure Hp reaches 12 MPa. Above, on the one hand, the first rotary compression element forming the low-stage side is 8 MPaG (intermediate pressure MP) when the outside air temperature is 15 ° C (the suction pressure LP of the first rotary compression element is 4 MPaG). As a result, the differential pressure in the first stage (the difference between the suction pressure Lp of the first rotary compression element and the output pressure MP of the i-th rotary compression element) reaches a value as high as 4 MPaG. Moreover, the higher the outside air temperature, the i-th The output pressure Mp of the rotary compression element increases sharply, so the differential pressure in the first stage increases. When the differential pressure in the first paragraph is so large, the internal and external pressure difference between the sending valve used to open and close the sending port of the first rotary compression element is too large, and the durability and reliability of the sending valve may be reduced due to damage to the sending valve. The present invention has been made to solve such a problem of the prior art, and an object of the present invention is to provide a multi-stage compression type rotary compressor which can prevent a reduction in durability and reliability caused by an excessively large differential pressure in the first stage. If the differential pressure in the second stage of the conventional technique is increased, the pressure difference between the inside and outside of the sending valve of the second rotary compression element is too large, resulting in the problem that the pressure difference causes damage to the sending valve of the second rotary compression element. The present invention has also been made to solve such a technical problem, and provides a discharge valve for a second rotary compression element which can prevent the second stage differential pressure from occurring.

313801.ptd Page 10 564289 V. Description of the invention (5) For this reason, if a refrigerant flow path is provided to the evaporator without depressurizing the refrigerant sent by the first rotary compression element, it will pass through during defrost. The refrigerant flow path causes the refrigerant sent from the first rotary compression element to be also supplied to the evaporator, so that the problem of the pressure reversal between the sending and suction of the second rotary compression element can be avoided. But 'this situation will form the form where the sending side of the first rotary compression element communicates with the sending side of the second rotary compression element, so that the pressure on the suction side and the sending side of the second rotary compression element is the same. There is a problem that the rotation of the second rotary compression element is unstable due to the drop of the blade of the second rotary compression element. The present invention also aims to solve such technical problems, and aims to provide a defrosting device in a refrigerant flow path using a multi-stage compression rotary compressor, which can avoid an unstable operation state during the defrosting operation of the evaporator. . [Summary of the Invention] [Means to Solve the Problem] The invention of item 1 of the scope of the technical application patent is provided with an electric component in a closed container, and the first and second rotary compression devices driven by the electric component. A multi-stage compression rotary compressor that sends the refrigerant gas compressed by the first rotary compression element out of the sealed Rongjie, and then sends the intermediate pressure refrigerant gas at the second rotary pressure of 7L pieces. A multi-stage compression type rotary compressor includes: a cylinder for forming a second rotary compression element and a 5 to 5 eccentricity within the cylinder at an eccentric portion formed on a rotary shaft of an electric component, and a roller abutting on the roller The inner part of the cylinder is divided into fins on the side of the low pressure chamber and the side of the pressure chamber, so that the fins are constantly pushed on the back of the roller side.

313801.ptd Page 12 564289 V. Description of the invention (6) The pressure chamber is used to communicate the communication path between the refrigerant delivery side of the second rotary compression element and the back pressure chamber, and the communication path is used to adjust the pressure applied to the back. The pressure adjustment valve of the pressure of the pressure chamber; therefore, the pressure adjustment valve can appropriately maintain the pushing force of the blade to the roller. Furthermore, if the second scope of the patent application is applied, the pressure in the back pressure chamber is maintained at a predetermined value lower than the pressure at the refrigerant sending side of the second rotary compression element and higher than the pressure in the closed container. While preventing the fins from falling, the back pressure applied to the fins is prevented from being higher than a necessary value, so that the pushing force of the fins to the rollers can be in an appropriate range. As a result, the burden on the tip of the fin and the sliding portion on the outer periphery of the roller can be reduced, damage to the fin and the roller can be avoided, and durability can be improved. According to the invention in the scope of patent application No. 3, in addition to the above-mentioned structure, it is also provided with a supporting component of a bearing having a rotating shaft of an electric component while closing the opening surface of the above-mentioned cylinder, and the supporting component The sending-out muffler chamber in the module, the communication path is formed in the support zero resistance member to connect the sending-out muffler chamber and the back pressure chamber, and the pressure regulating valve is set in the supporting component; Limited space, on the one hand, can adjust the pressure in the back pressure chamber of the wing without complicating the structure. In addition, since the communication path and the pressure regulating valve are installed in the supporting component in advance, the assembling workability is also excellent. The method for manufacturing a multi-stage compression type rotary compressor according to the present invention according to item 4 of the scope of patent application is a method for manufacturing a multi-stage compression type rotary compressor having the following structure. An electric component is provided in a closed container and driven by the electric component. The first and second rotary compression elements, the first and second rotary compression elements, are formed by the first and second cylinders and fitted in the electric element

313801.ptd Page 13 564289 V. Description of the invention (7) The first and second eccentric parts of the rotating shaft of the component are eccentrically rotated in each cylinder, and the first The refrigerant gas compressed and sent by the rotary compression element is sucked into the above-mentioned second rotary compression element and compressed to be sent out. In manufacturing such a multi-stage compression rotary compressor, it is not necessary to change the thickness (height) dimension of the first cylinder, and The inner diameter of the cylinder is changed to set the exhaust volume ratio of the first and second rotary compression elements. Therefore, 'it is not necessary to change the material of the cylinder of the first rotary compression element or all components such as the roller and the eccentric part of the rotary shaft, but it is possible to change only the roller or only the roller and the eccentric part, for example. . Furthermore, since the overall size can be prevented from being enlarged, the size can be reduced. According to the method for manufacturing a multi-stage compression rotary compressor according to item 5 of the scope of the patent application, in the above method, the exhaust volume of the second rotary compression element is set to 40% of the exhaust volume of the first rotary compression element. % To 75%. Setting the exhaust volume of the second rotary compression element so that it is 40% to 75% of the exhaust volume of the first rotary compression element, the exhaust volume ratio of the first and second rotary compression elements, Will be the most appropriate. According to the invention of item 6 of the scope of patent application, the sealed container is provided with an electric component and the first and second rotary compression components driven by the electric component, and the refrigerant gas compressed and sent by the first rotary compression component passes through The multi-stage compression type rotary compressor that is sucked in and compressed by the second rotary compression element is provided with a communication path for connecting the refrigerant suction side and the refrigerant output side of the first rotary compression element and opening and closing the communication path. Valve device, this

313801.ptd Page 14 564289 5. In the description of the invention (9), the communication path is opened, so the pressure difference between the sending pressure and the suction pressure of the second rotary compression element can be suppressed, that is, the differential pressure in the second stage is suppressed. Below the predetermined upper limit. Therefore, it is possible to prevent the failure of the second rotary compression element's delivery valve from being damaged. According to the invention in the ninth scope of the patent application, in addition to the above-mentioned structure, it also has a cylinder that constitutes the second rotary compression element, and a silencer chamber for sending the refrigerant gas compressed in the cylinder, and the first rotation The intermediate-pressure refrigerant gas compressed by the compression element is sent out of the closed container. The second rotating compression element sucks the intermediate-pressure refrigerant gas in the closed container, and the communication path is formed in the wall of the chamber that sends out the silencing chamber. The valve device is installed in the above wall by connecting the inside of the closed container with the outlet muffler chamber. Therefore, it is possible to connect the passage of the intermediate-pressure refrigerant gas compressed by the first rotary compression element and the second rotary compression element. The communication path of the refrigerant delivery side and the valve device for opening and closing the communication path are concentrated in the wall of the second rotary compression element. Therefore, the structure can be simplified and the overall size can be reduced. According to invention No. 10 in the scope of the patent application, it is provided with a rotary compression element driven by the electric component in a closed container with an electric component, and the rotary compression component compresses a rotary compressor of C0. Equipped with a rotary piston which is a rotary compression element and has an oscillating piston formed on an eccentric portion of a rotating shaft of an electric component and eccentrically moving in the cylinder. The oscillating piston is formed on the oscillating piston and projects radially from the roller portion. Separate the inner part of the cylinder into a fin section on the low-pressure chamber side and a high-pressure chamber side, and

313801.ptd Page 16 564289 V. Description of the invention (11) The use of a swing piston to achieve a significant simplification in structure and a significant reduction in production costs. The invention according to item 12 of the patent application scope is the invention of item 10 or 11 of the patent application scope plus the support portion is formed in the cylinder, and the flap portion of the swinging piston can be guided freely to enter The groove is rotatably provided in the guide groove and is constituted by a bush that movably supports the flap portion 玎. Therefore, the swinging and sliding action of the swinging piston can be smoothed. Therefore, the performance and reliability of the rotary compressor can be greatly improved. The defrosting device of the present invention according to item 13 of the scope of the patent application is provided with an electric element and a second rotary compression element driven by the electric element in a sealed container, and compresses the first rotary compression element. The multi-stage compression rotary compressor compressed by the second rotary compression element of the refrigerant is a gas cooler into which the refrigerant sent by the second rotary compression element of the multi-stage compression rotary compressor flows, and is connected to this gas cooling. The first pressure reducing device on the outlet side of the evaporator and the evaporator connected to the outlet side of the first pressure reducing device; and the refrigerant flowing out from the evaporator is compressed by the first rotary compression element. Refrigerant flow path, the refrigerant flow path includes a defrost flow path for supplying the refrigerant sent by the first and second rotary compression elements to the evaporator without reducing the pressure, and used to control the refrigerant in the defrost flow path The first flow path control device in circulation is provided in the second pressure reducing device for supplying the refrigerant sent from the first rotary compression element to the refrigerant passage of the second rotary compression element, and is used to control This pressure the refrigerant flowing into the second apparatus or whether to move back to the refrigerant pressure of the apparatus of this second flow path of the second control device ilk, ilk path when the first control means to defrost the cooling medium flow passage placed

313801.ptd Page 18 564289 V. Description of the invention (12) ^ — When the second flow path control device releases the refrigerant to the second pressure reducing device, so when the evaporator is in defrosting operation, the first The refrigerant sent from the first rotary compression element and the second rotary compression element is supplied to the evaporator without being decompressed, so that the second rotation phenomenon of the pressure in the second rotary compression element can be prevented.疋 In particular, according to the present invention, at the time of defrosting, the refrigerant supplied to the second rotary compaction element is supplied to the second rotary compression element through the pressure reducing device provided in the refrigerant passage. Therefore, in the second A predetermined pressure difference is formed between the suction and discharge of the rotary compression element. As a result, the operation of the second rotary compression element is stabilized and reliability is improved. In particular, if No. 14 of the scope of patent application is applied, using CO helium as a refrigerant, a particularly significant effect is exhibited in the refrigerant flow path. [Embodiment] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is an embodiment of a multi-stage compression type rotary compressor of the present invention, which is an internal intermediate pressure type multi-stage (2-stage) compression type rotary compressor 1 provided with the first and second rotary compression elements 3 2, 3 4 0 is a longitudinal sectional view, FIG. 2 is an enlarged sectional view of a pressure adjusting valve 107 of the rotary compressor 10, FIG. 3 is a front view of the rotary compressor 丨 0, and FIG. 4 is a side view of the rotary compressor 丨 〇 . In each figure, 10 is a rotary compressor of carbon monoxide (C0 0 is the internal intermediate pressure type multi-stage compression compressor of the refrigerant. The rotary compressor 丨 0 is a cylindrical closed container 12 made of steel plate. The electric element 1 4 on the upper side of the internal space of the closed container 12 is arranged below the electric element 丨 4 and is the first rotary compression element 3 2 (the first 1

313801.ptd Page 19 564289 V. Description of the invention (13) Ϊ i: machine and structure 2 V: K compression element 34 (segment 2) formed by a screw-closed container 1 2 will be the bottom of you ★ —Shidong The component "rotary compressor; = is composed of the body UA which is used to accommodate the plug on the upper part of the container body 12A, and is used to close, and the cover body 12β is above s / = 2 cover body 12B. 1 2 D, this mounting hole 丨 2 D is equipped with u / round mounting hole terminal 20 (wiring is not shown). U is the electric component 1 which supplies electric power to the electric component U. 4 is made by the stator installed along the airtight 22, and the rotor 24 which is installed on the inner peripheral surface of the upper space. This rotation = :: holds a number of rotating shafts 16 extending in the direction of the interval. The rotor 24 is fixed to the vertical through the center. The laminated body 26 in which a circular electromagnetic steel plate is laminated with the stator coil 2 of which the teeth of the laminated body 26 are wound in series in a winding manner is also the same as that of the stator 22, and the laminated body is formed with an electromagnetic steel plate. 30 ′, and then insert a permanent magnet MG into this laminated body 30. The first rotary compression element 32 and the second one There is an intermediate partition 36 between the rotary compression elements 34. That is, the first rotary compression element 3 2 and the second rotary compression element 3 4 are formed by: the intermediate partition 36, which is arranged on this intermediate partition 3 6 The upper and lower upper cylinders 38 and 40 are fitted to the upper and lower eccentric parts 4 2 and 4 4 which are arranged on the rotating shaft with a phase difference of 180 degrees and rotate eccentrically in the upper and lower cylinders 3 8 and 4 0. The upper and lower rollers 4 6 and 4 8 abut on the upper and lower rollers 4 6 and 4 8 to separate the upper and lower cylinders 3 8 and 40 respectively into the upper and lower vanes 50 and 52 of the low pressure chamber side and the high pressure chamber side, and , The opening surface of the upper side of the upper cylinder 38 and

3l3801.ptd Page 20 564289 V. Description of the invention (14) The opening surface of the lower side of the lower cylinder 40 is closed and also serves as the supporting component of the bearing of the rotating shaft 16. The upper part supports the component 5 4 and the lower part supports the zero. Components 5 6 and so on. The ratio of the exhaust volume of the first rotary compression element 32 and the exhaust volume of the second rotary compression element 34 is set as follows: The exhaust volume of the second rotary compression element 34 / the first rotary compression element 32 The exhaust volume X 100 = 40% to 75%. 〇 In the cylinder 38 above the second rotary compression element 34, as described in the second Θ, a guide groove 7 is formed for the above-mentioned fins. The outer side of this groove, that is, the rear side of the fin 50, is formed with a receiving portion 70A for receiving the spring component, that is, the spring 74. This spring 74 abuts on the back side end 4 'of the fin 50, and constantly urges the fin 50 against the roller 46 side. The 70 A side of this accommodating part guides the 70 side of the drainage groove and the closed container! 2 (container body 12 A) is open at the side, and a metal plug 1 37 is provided on the sealed container 12 side of the spring 74 housed in the accommodating portion 70A to prevent the spring 74 from falling. An o-ring (not shown) is attached to the peripheral surface of the plug 137 to seal the space between the plug 137 and the inner surface of the accommodating portion 70A. In addition, between the guide groove 70 and the accommodating portion 70 A, in order to spring the spring 7 4 and the f-piece 50 to the roller 4 6 side from time to time, there is provided a shrinking element 3 for rotating the second The refrigerant sending pressure of 4 is applied to the back pressure chamber 9 9 of the fins 50. The upper surface of this back pressure chamber 99 is connected to a second passage ιo6 described later. The upper support component 54 and the lower support component 56 are provided with suction passages 60 (the suction passages on the upper side are not shown) which communicate with the interior of the upper and lower cylinders 38 and 40 through suction ports (not shown). A part is recessed, and the recessed part is closed by the upper cover 66 and the lower cover 68 and sent out of the anechoic chamber.

3l3801 * Ptd Page 21 564289 V. Description of the invention (15) 62, 64 ° Send out the muffler chamber 64 and the closed container 12 to communicate with the communication path passing through the upper and lower cylinders 3 8, 4 0 and the intermediate partition 36. Above the communication path, an intermediate protruding tube 1 2 1 is placed, and the first rotary compression element 〇00 & β Riyu, Bu Fan pieces 3 2 compressed intermediate-pressure refrigerant gas is sent through this intermediate outlet tube 1 2 1 delivered to you + outside closed container 1 2 inside. Used to occlude the rotary compression element connected to the second> 〇, the upper part of the opening of the muffler chamber 6 2 in the muffler 34 to send out the muffler chamber 6 2, the upper adjacent box 6 6, to seal the closed volume 1 2 internal area The muffler chamber 62 and the electric component are separated from each other, such as ^ σσ, the upper supporting component 5 4 is internally formed with 诖, s & ^ ° Qiao reverse path 1 〇 〇 This line is connected to the 100 series, and the second Rotary compression element ^ ^ 4 above the cylinder 3 8 The first outlet of the muffler chamber 6 2 and the upper north, the path of the round but M η ton back pressure chamber 99, as shown in Figure 2, up and down Through the upper support, zero 1 ^ and piece 54, are made of, as above the upper cover 6 6 closed valve accommodation chamber 1 〇2, 逯, s · side through this accommodation chamber 1 0 2 μ ^ and send out the muffler chamber 6 The first path 1 〇2 of 2 is formed by connecting the upper side of the upper end 102 with the valve accommodating chamber 1 002 and the back pressure: position: 今, 室, chamber 106, and the path of the love 2 to 99 is the above The valve accommodation chamber 102 is a vertical hole △ ^. The cylindrical hole extending in the universal direction is 'lower' and closed with a sealing material 103.

~ 1 material 1 03 The lower side of the II side spring component 104 (coil spring) is mounted on the lower side, and the valve body 105 is mounted with a spring. The valve body 105 can be mounted on the upper end of the valve—the heart—1 n Ohm. The shuttle can be freely set in the pq valley to 102, and the valve can be accommodated in the valve ^ a ^ ^ τ ^ ^ ^ ^ And the spring component 104 constitute the pressure regulating valve 107 of the present invention. 105 The above second passage 106 is determined by the lower end of the valve accommodation chamber ι〇2

564289 V. Description of the invention (17) (not shown on the upper side), sending out the anechoic chamber 6 2. On the position corresponding to the upper side of the upper cover 6 6 (approximately corresponding to the lower end of the electric component 1 4), there is a sleeve 141 , 142, 143 and 144. The sleeves 141 and 142 are adjacent to each other up and down, and the sleeves 1 4 3 are located approximately on the diagonal of the sleeves 1 4 1. As for the casing 1 4 4, the casing 1 4 1 is located at a position which is about 90 degrees apart. One end of the refrigerant introduction pipe 92 for introducing refrigerant gas into the upper cylinder 38 is inserted in the sleeve 1 41, and one end of the refrigerant introduction pipe 92 is connected to a suction passage (not shown) of the upper cylinder 38. This refrigerant introduction pipe passes through the upper side of the sealed container 12 to reach the sleeve 1 4 4, and the other end is inserted into the sleeve 1 4 4 and communicates with the inside of the sealed container 1 2. One end of the refrigerant introduction pipe 94 is inserted into the sleeve 1 42 to introduce the refrigerant gas into the lower cylinder 40. One end of the refrigerant introduction pipe communicates with the suction passage 60 of the lower cylinder 40. The other end of the refrigerant introduction pipe 94 is connected to the lower end of the accumulator 146. A refrigerant delivery pipe 96 is inserted into the sleeve 1 4 3, and one end of the refrigerant introduction pipe 96 is connected to the outlet muffler chamber 62. The above-mentioned reservoir 1 4 6 is a storage tank for gas-liquid separation of the sucked refrigerant, and is hoisted to the upper part of the container body 1 2 A of the sealed container 12 through the bracket 1 4 8 on the reservoir side. Side closed container side bracket 1 47 (refer to Figure 3). The rotary compressor 10 of this embodiment is used in the refrigerant flow path of the water heater 153 as shown in FIG. The refrigerant outlet pipe 96 of the rotary compressor 丨 is connected to the inlet of a gas cooler 154 for water heating. The gas cooler 1 54 δ is placed in a hot water storage tank (not shown) of the water heater 153. The piping from the gas cooler 1 5 4 is: the pressure reducing device, that is, the expansion valve 1 5 6 is connected to the evaporator 1 5 7

313801.ptd Page 24 564289 V. Description of the invention (18) The inlet of the evaporator and the outlet of the evaporator 1 5 7 are connected to the A and the A ^ introduction tube 92, as shown in Figure 5, which is removed by the person in the midway. The frost tube 1 58 is connected through the flow path control device: constituting defrosting ^ The refrigerant sending to the inlet of the gas cooler 15 4 is connected to the valve 1 5 9; the healthy animal state 1 4 6 is omitted and not shown . The above is the structure of the structure, and the second explanation is that the movement, rotation, and rotation of the solenoid valve 1 59 are closed. Through the heating medium of "the stator coil 28 is energized by the terminal 20 and the wiring (not shown) to the electric component", the electric component 14 starts and the rotor 24 rotates. Due to this rotation, the upper and lower eccentrics are integrated with the rotating shaft 16 The upper and lower rollers 4 6 and 4 8 fitted in the parts 42 and 44 rotate eccentrically in the upper and lower cylinders 3 8 and 40. Therefore, the suction passage 60 formed through the refrigerant introduction pipe 94 and the lower supporting component 56 is not shown in the figure. The suction port shown in the figure draws the low-pressure side of the low-pressure chamber of the lower cylinder 4 (the first stage suction pressure: 4MPaG), which is compressed by the action of the lower roller 48 and the fins 52 to become an intermediate pressure (the first stage delivery pressure: 8MPaG), sent from the high-pressure chamber side of the lower cylinder 40 through an outlet (not shown) to the outlet muffler chamber 64 formed in the lower branch component 56. The refrigerant gas sent out from the intermediate pressure in the outlet muffler chamber 64 Through the above-mentioned communication route, the intermediate sending pipe 1 2 丨 is sent out of the closed container 12, and the closed container 12 becomes an intermediate pressure (8 MPaG). The intermediate pressure refrigerant gas in the closed container 12 after the mountain flows out from the bushing 1 4 4 By forming the refrigerant introduction pipe 92 and the upper support zero The suction path (not shown) of the module 54 is sucked into the low-pressure chamber side of the upper cylinder 38 through the suction port (not shown). The intermediate-pressure refrigerant gas that is entered is due to the action of the upper roller 46 and the fins 50. The compression of $ into the second stage becomes high-temperature and high-pressure refrigerant gas (the second stage sends out the pressure:

313801.ptd Page 25 564289 V. Description of the invention (22) ^ But \ is not limited to this, even if it is used in a multi-stage compression rotary compressor with 3 stages, 4 stages or more ^ rotary compression elements. In the ^ H known example, it is the refrigerant flow path of 1 ^ 5 3 when the multi-stage compression rotary compressor 10 is applied to hot water, but it is not limited to this. The present invention is still effective. This > Its-person 'describes the second embodiment of the present invention. FIG. 7 shows a longitudinal sectional view of a multi-stage (2-stage) compression type rotary compressor 10 in the middle of the first and second rotary compression elements 3 2, 3 and 4 of the present invention, and FIG. 8 This is a front view of the compression rotary compressor. Figure 9 is a side view of the multi-stage compression rotary compressor 10. & β In the drawings, 10 is an internal intermediate pressure multi-stage compression type rotary compressor using carbon dioxide as a refrigerant. This multi-stage compression type rotary compressor 10 is a cylindrical closed container made of steel plate 2 and an electric component 4 which is housed on the upper side of the internal space of this closed container 1 2 and is arranged here The lower side of the electric element 14 is formed by the first ^ rotation compression element 32 (paragraph 1) and the second rotation compression element 34 (paragraph 2) driven by the rotation axis 16 of the electric element 14 The rotary compression mechanism section 18 is configured. The closed container 12 has a bottom as the oil pan, and is composed of a container body 12A for a rotary compression mechanism part 18 for accommodating electric components, and an approximate bowl for closing an opening on the upper part of the container body 12A. It is formed by a cover 丨 2B. A circular mounting hole 12D is formed at the center of the upper surface of the cover 12B. The mounting hole 12D is provided with terminals 2 0 (wiring portion) for supplying electric power to the electric component 14 (Not shown). The electric component 14 is composed of a stator 2 2 installed along the inner peripheral surface of the upper space of the closed container 12, and a plurality of spaced inserts are maintained inside the stator 2 2.

313801.Ptd Page 29 564289 V. Description of the invention (23) It is composed of a rotor 24 which is installed in the installation. The rotor 24 is fixed to a rotating shaft 16 extending vertically through the center. The stator 22 includes a laminated body 26 formed by laminating circular electromagnetic steel plates, and a stator coil 28 in which teeth of the laminated body 26 are wound in series. Similarly to the stator 22, the rotor 24 is formed of a laminated body 30 'from an electromagnetic steel plate, and a permanent magnet MG is inserted into the laminated body 30. An intermediate partition 36 is interposed between the first rotary compression element 32 and the second rotary compression element 3 4. That is, the first rotary compression element 32 and the second rotary compression element 34 are composed of an intermediate diaphragm 36, and the upper cylinder 38 and the lower cylinder 40 are arranged above and below the intermediate diaphragm 36. Within the upper and lower cylinders 38 and 40, a phase difference of 180 degrees is set on the upper and lower eccentric portions of the rotating shaft 1 6 4 and 4 4 and the upper and lower rollers 4 6 and 4 8 are eccentrically rotated and abutted on the upper and lower rollers 4 6 The upper and lower fins of the upper and lower cylinders 3, 8 and 40 are respectively divided into the upper and lower fins 50, 5 2 of the low pressure chamber side and the high pressure chamber side, and the upper and lower opening surfaces of the upper gas red 3 8 The opening surface on the lower side of the cylinder 40 is closed and is also used as a supporting component of the bearing of the rotating shaft 丨 6 to constitute the upper supporting component 54 and the lower supporting component 56. In the embodiment, the upper and lower cylinders 38, 40, each of which constitutes the second and first rotary compression elements 3 4, 32, are of the same thickness. Suppose that the inner diameter of each of the cylinders 38 and 40 is cut by D2 and D. When the exhaust volume ratios of the first and second rotary compression elements 3 2 and 3 4 are changed, the first The inner diameter Db of the cylinder 40 below the compression element 32 is rotated to set the exhaust volume ratio. For example, it is necessary to change the end degree (and degree) size of the lower cylinder 40 to set

313801.ptd Page 30 564289 V. Description of the invention (24) In the exhaust volume, the dimensions of the blank of the lower cylinder 40, the lower eccentric portion 44 and the thickness of the lower roller emblem U I) must be changed. That is, at this time, at least the lower cylinder 40 and the lower roller 48 are changed from the blank to t, and the lower eccentric portion "needs to change the cutting process of the rotary shaft 16. In the case of the present invention, at least for the lower cylinder 40, the material can be maintained as it is and the inner diameter can be changed during cutting. As for the lower roller 48, it is necessary to change the outer diameter at least, but if the inner diameter is the same, please change the eccentricity under "Beiyi" 4. As stated above According to the present invention, at least the blank of the lower cylinder 40 is maintained as it is and only the outer diameter of the cutting and the lower roller 48 is changed 'or' Only the outer diameter and inner diameter of the lower roller 4 8 and the lower deviation are changed ~ 4 , 44, can be. Due to the%, the change of parts can be suppressed to the minimum range, ^ Yes. Also, the optimal t-to-product ratio of the first and second rotary compression elements 3 2, 3 4 is set. In the embodiment, the exhaust gas of the second rotary compression element 34 is set to be more than 40% to 75% of the exhaust volume of the first rotary compression element 32. Ten supporting components 54 and The lower supporting components 56 are provided in the figure, and the entrance is connected to the interior of the upper and lower cylinders 38 and 〇. The inhalation channel 60 (the inhalation path on the upper side is not shown), and a part of the indentation is recessed, and the upper part of the indented cover 6 6 and the lower cover 6 8 are closed to send out silence to 62, 64. The anechoic chamber 64 and the closed container 丨 2 communicate with each other through a communication path penetrating the upper and lower cylinders 38 and the intermediate partition 36. The upper end of the communication path is provided with a protruding tube 1 2 1 upward, and the first rotation compression The intermediate-pressure refrigerant gas compressed by the element 3 2 passes through this intermediate delivery pipe 1 2 1 and is sent out of the closed container 12. It is used to close the cylinder 3 8 which is connected to the second rotary compression element 3 4.

564289 V. Description of the invention (25) '-4 The upper side of the upper opening of the muffler ^ 6 2 is closed at 6 6 to separate the inside of the closed container 12 from the muffler chamber 62 and the electric component 14 side. On this day, the environmental protection, flammability, and toxicity issues of the earth, the refrigerant uses the above-mentioned natural refrigerant of carbon dioxide (c02), and the lubricating oil uses, for example, mineral oil, alkyl benzene oil, ether oil, ester oil, pAG (Polyalkylene glycol) and other existing oils. The sides of the container body of the starter and closer 1 2 丨 2 a are respectively fixed with the suction passage 6 of the upper support component 5 4 and the lower support component 5 6 (not shown on the upper side), and the sound emission chamber 6 is sent out. 2. The sleeves 14, 142, 143, and 144 are located at positions corresponding to the upper side of the upper cover 6 6 (approximately corresponding to the position of the lower end of the electric component 丨 4). The sleeves 141 and 142 are adjacent to each other up and down, and the sleeves 143 are located approximately on the diagonal of the sleeves 141. As for the sleeve 144, it is located approximately 90 degrees away from the sleeve 141. One end of a refrigerant introduction pipe 92 for introducing refrigerant gas into the upper cylinder 38 is inserted in the sleeve 141, and one end of the refrigerant introduction pipe 92 communicates with a suction passage (not shown) of the upper cylinder 38. This refrigerant introduction pipe passes through the upper side of the hermetic container 12 to reach the casing 1 44, and the other end is inserted into the casing 1 44 and communicates with the interior of the hermetic container 12. One end of the refrigerant introduction pipe 94 is inserted into the sleeve 1 42 to introduce the refrigerant gas into the lower cylinder 40, and one end of the refrigerant introduction pipe communicates with the suction passage 60 of the lower cylinder 40. The other end of the refrigerant introduction pipe 9 4 is connected to the lower end of the reservoir i 4 6. A refrigerant outlet pipe 96 is inserted into the sleeve 1 4 3, and one end of the refrigerant guide pipe 96 is connected to the outlet muffler chamber 62. The above-mentioned accumulator 1 46 is for separating the sucked refrigerant into gas-liquid.

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564289 V. Description of the invention (26) The storage tank is hoisted from the reservoir side hanger 1 4 8 and is welded and fixed to the closed container side hanger 147 on the upper side of the container body 12 2 A (Refer to Figure 8). The rotary compressor 10 of this embodiment is used in the refrigerant flow path of the water heater 153 shown in Fig. 10. The refrigerant outlet pipe 9 6 of the rotary compressor 10 is connected to the inlet of a gas cooler 154 for water heating. The gas cooler 1 54 is installed in a hot water storage tank (not shown) of the water heater 1 53. The piping from the gas cooler 1 54 is connected to the inlet of the evaporator 15 7 through a pressure reducing device, that is, the expansion valve 1 5 6, and the outlet of the evaporator 15 7 is connected to the refrigerant introduction pipe 9 4. Refrigerant tube 92, as shown in Fig. 10, is partially divided into defrosting tubes 1 5 8 forming a defrosting flow path, and is connected to the gas cooling through a flow path control device, that is, a solenoid valve 15 9 Refrigerant delivery pipe 9 6 at the inlet of device 1 5 4. In Fig. 10, the accumulators 146 are omitted and not shown. Using the above structure to explain its operation is as follows. During the normal heating operation, the solenoid valve 1 5 9 is closed. When the stator coil 2 8 of the electric component 14 is energized via the terminal 20 and a wiring (not shown), the electric component 14 starts and the rotor 24 rotates. Due to this rotation, the upper and lower eccentric portions 4 2 and 4 that are integrally formed with the rotating shaft 16 are eccentrically rotated in the upper and lower cylinders 3 8 and 40. Then, the low-pressure refrigerant on the low-pressure chamber side of the lower cylinder 40 is sucked into the low-pressure chamber side of the lower cylinder 40 through the suction passage 60 formed in the refrigerant introduction pipe 94 and the lower supporting component 5 6 through the suction port (not shown). The intermediate pressure compressed by the action flows from the high-pressure chamber side of the lower cylinder 40 through a sending port (not shown) to the sending muffler chamber 64 formed in the lower supporting component 5 6 and passes through a communication path (not shown).

313801.ptd Page 33 564289 V. Description of the invention (27) The middle delivery pipe 121 is sent out of the closed container 12. Then, the inside of the closed container 12 becomes an intermediate pressure. The intermediate-pressure refrigerant gas in the closed container 12 flows out from the sleeve 144 through a suction passage (not shown) formed in the refrigerant introduction pipe 92 and the upper supporting component 54 and is sucked into the upper cylinder 38 through a suction port (not shown). Low-pressure room side. The sucked medium-pressure refrigerant gas is compressed by the action of the upper rollers 46 and the fins 50 into the second stage to become high-temperature-pressure refrigerant gas. The muffler chamber 62 in the upper supporting component 54 is then flowed into the gas cooler 154 through the refrigerant outlet pipe 96. At this time, the temperature of the refrigerant rises to about +10 (rc, so that the high-temperature and high-pressure refrigerant gas is heated to the water in the hot water storage tank by exotherm, and can be heated to about +90.00 hot water. On the one hand, the refrigerant It is cooled by the gas cooler 154, and flows out of the gas cooler 154. Then, it is decompressed by the expansion valve 156, and then flows into the evaporator 157, and is passed through the refrigerant introduction pipe through the accumulator 146 (not shown in Figure 10) 94 Re-inhaled into the first rotary compression element 32 and repeat the cycle as above. In this way, there is no need to change the thickness (height) size of the lower cylinder 40. After changing the inner diameter D1 of the lower cylinder 40, the second rotary compression element is changed. The exhaust volume of 3 4 is set to 40% or more and 75% or less of the exhaust volume of the first rotary compression element 32 to set the exhaust volume of the first and second rotary compression elements 3 2, 3 4 Therefore, on the one hand, it is possible to suppress the change of the cylinder blank or the eccentric part, the roller and other parts to the minimum range, and on the other hand, it is possible to reduce the compression load of the second rotary compression element 34 to form the most appropriate pressure to minimize the differential pressure Exhaust volume ratio. Also, due to rotation compression Mechanism department 丨 8 size up and down = expansion

313801.ptd

564289 V. Description of the invention (28) is large, so the multi-stage compression rotary compressor can be miniaturized. In the embodiment, the thickness (height) of the upper and lower cylinders 38, 40 is set to the same size, but it is not limited to this. Even if it is originally a different thickness (height), the first rotation compression element is changed. Cases where the inner diameter of the cylinder is set to the exhaust volume ratio are also included. Furthermore, in the embodiments, the multi-stage compression type rotary compressor 10 in which the rotary shaft 16 is a vertical type is described, but the present invention is applicable to a multi-stage compression type rotary compressor in which the rotary shaft is a horizontal type. Needless to say. Furthermore, the multi-stage compression type rotary compressor will be described with reference to a two-stage compression type rotary compressor having first and second rotary compression elements. However, the present invention is not limited to this, and even if the three-stage, four-stage, or Multi-stage compression rotary compressors with the above-mentioned rotary compression elements can also be applied. Furthermore, in the embodiment, the multi-stage compression rotary compressor 10 is applied to the refrigerant flow path of the water heater 153, but it is not limited to this. Even if it is applied to an indoor heater, etc., the present invention is still Is effective. Next, another embodiment of the present invention will be described in detail with reference to the drawings. Fig. 12 shows a longitudinal sectional view of an embodiment of the present invention having the internal intermediate pressure type multi-stage (2-stage) compression rotary compressor 10 of the first and second rotary compression elements 3 2, 3 4. In Fig. 12, 10 is an internal intermediate pressure multi-stage compression rotary compressor using carbon dioxide as a refrigerant. This multi-stage compression rotary compressor 10 is a cylindrical closed container made of steel plate 12. The electric component 14 arranged on the upper side of the internal space of the closed container 12 and the first one arranged on the lower side of the electric component 14 and driven by the rotary shaft 16 of the electric component 14 are arranged.

313801.ptd Page 35 564289 V. Description of the invention (29) ^ '一 ·' Rotational compression formed by the rotation of the compression element 32 (the first paragraph) and the second rotation compression element 34 (the second) of the rotation section The mechanism section 18 and the like. The closed container 12 has a bottom as an oil pan, and is composed of a container body 12A for accommodating the rotary pressure mechanism part 18 of the electric component 丨 4, and is used for closing an approximately bowl-shaped lid body 1 opened above the container body 12A. It is composed of 2B, and the moss body 2β center is formed with a circular safety hole 12D, and is installed; two two two i, ,, and e power is provided to the terminal 20 of the electric component 14 (the wiring part is not shown). The poor piece t = 14 is inserted along the inner peripheral surface of the upper space of the closed container 12 and is inserted at a distance of t inside the stator 22. The rotor 24 is fixed to the center through Rotating shaft 16 extending in the vertical direction. ^ The stator 2 2 has a laminated body formed by laminating _-shaped electromagnetic steel plates in a circle, 26, and ^ — a stator whose teeth are wound in series winding, "Q ° ^ 24 is the same as that of 疋 22, which is made of electromagnetic steel sheet to form a composite body 30, and then insert a permanent magnet into this multilayer body 30. ^ The first rotary compression element 32 and the second Γ of the rotary compression element 34: set ?: spacer 36: that is, the rotation compression element 32 of the (and the compression compression element of the second and third) το # 34 '系 、 由' Intermediate partition ⑼, arranged in The upper and lower upper and lower cylinders 38 and 40 are fitted into the middle partition plate 36, and the upper and lower cylinders 38 and 40 are fitted in the upper and lower eccentric portions 42 and 44 with a phase difference of 180 degrees in the upper and lower cylinders 38 and 40. The upper and lower rollers 46 and 48 are eccentrically rotated, and the upper and lower rollers 4 6 and 4 8 are abutted to separate the upper and lower cylinders 3 8 and 40 respectively. Upper and lower flap 5〇 low pressure chamber side and the high pressure side of the chamber 52, and the upper surface on the opening side of the cylinder 38 and below the lower surface of the opening 40 side of the cylinder to be closed and milk is used along with the rotation

31380l.ptd Page 36 564289 V. Description of the invention (30) The car is composed of 16 bearing parts above the supporting parts and parts 5 6 and so on. The upper part 5 4 and the lower suction port 1 6 1 and 1 6 2 are sent out of the muffler chamber 6 and 6 and the upper and lower air passages 58 and 60, respectively, and the recessed outlet is sent out of the muffler chamber 6 2 and 6 4 to “mute the muffler chamber 62 to The cover is closed by the cover, that is, the lower cover 6 8 is the center of the upper supporting component 5 4 and the central support of the lower supporting component 5 6 is the upper supporting component 5 4. The bearing car is supported by the bearing 5 6 A. .邛 Support parts 5 4 and 4 building parts support parts 5 6 form a cylinder 38, ιη + βπΑ & there is a suction through the muffler chamber ΓΪ and the cover is closed by a lid ':: upper cover 66, sent out of the muffler chamber 6 : Bearing 54a is formed upward, and bearing 56A is formed through. Between the rotation path 54A and the lower support component t a, the above-mentioned first rotary compression element 32 suction path 60 and the lower support component 56 are formed in the lower support component 56, and a communication path 丨 a daily communication path 100 is formed. It is used to communicate the rotation compression element of the first], that is, the refrigerant transmission side of the refrigerant transmission from the inlet f compressed by the suction passage 60 and the first rotation compression element 32, that is, the passage that sends the silencing chamber 64. 1 3 picture. '其 々 也 就是' "The muffler chamber 64 has one end of the first passageway 101, and the other end of the $ 1 passageway 1001 is opened to the valve device accommodation chamber 10, and the muffler room and valve device are shaped out. The accommodating room 1 2 communicates. This valve device accommodating chamber 102 is formed in a vertical direction, and is sucked on.卩 The opening and the lower part of the lower cover 6 8 side are closed with a seal 1 ′ 105.

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564289 V. Description of the invention (31) The position of the first passage 1 in the valve device accommodating chamber 1 0 2 is above the 1 of position, and the second passage 10 3 is open at one end, and this second passage is open. The other end of the person and s opens to the suction passage 60, and communicates the valve device accommodating chamber 102 with the suction passage 60. These first and second passages 1 (Π, 103, and the valve device capacity point = 102) are formed in the lower supporting component 56 to form the communication path 100. The valve device accommodates In the room 102, you can move up and down freely ί ^ Yes, a valve device 10 6 with a release valve function. The upper end of this valve device 10 6 is 11 ~ ^ one of the free spring 1 07 abuts, and this spring The other side of 1 07 is bulged on the sealing material 10 4 to form a spring 10 7 that constantly compresses the valve device 10 6 downwardly. Port position ㊁t1, shown in Figure 13, is located in the first path 101 When the position between the opening position of the suction fin / path 103 is opened, the pressure of the valve Φ M ri is pressed by the pressure of the upper device 1 0 ^ main lower reed (low pressure LP) and the spring 100 pressure, and From the bottom, there is a chalk from the first passage 1 〇1 筈 1 ni. Push the -valve device 106 upwards. That is, with the force of two of the bombs:] Guangjie refrigerant suction side of the Low-pressure refrigerant gas and refrigerant sending and receiving ί Two upper and lower cold: pressure of moving gas ^ force difference ί tmbe11 When the pressure of low-pressure refrigerant gas and intermediate-pressure refrigerant gas is less than 5MPaG, it is contained in the valve device capacity The valve device in the chamber 102 is in the state shown in FIG. 13 because it is located between the other end of the i-th device in the valve device accommodating chamber 102 and the second path om03. q The medium suction side is not connected to the refrigerant sending side, and it is blocked.

564289 V. Description of the invention (33) The upper cover 6 6 uses the outlet 3 9 to close the opening of the silencer chamber 6 2 which is inside the cylinder 3 8 which is connected to the second rotary compression element. 3 The inner area of the closed container 3 It is separated from the side for sending out the muffler chamber 62 and the electric component 14. Taxi L General

Qn J 葚 6 6 from the upper part of the dagger, as shown in FIG. 15, is composed of a circular steel plate having a substantially circular shape with a hole 5 4 A penetrating through the upper branch of the Aixian bearing. The main screw 78 is fixed to the upper supporting component 54 / from the top, and the top of the peripheral bolt 7 8 is bolted to the lower supporting component 56. The main screw in Fig. 5 is the second valve of the rotary compression element 'which opens and closes the outlet 3-9 in the outlet silencing chamber. 34. The sending valve 1 2 7 and 1 2 8 ′ are composed of elastic clothes clubs such as long metal plates. One side of the sending valve 127 and 128 is closely attached to the sending port ^ assembly, while the other side is at Unillustrated screw holes are separated by intervals. The j 1 bolt is fixed. The send-out valves 127 and 128 are shown at the send-out ports 39 and 41 with a certain pressure of $ f, and the send-out ports 39 and 41 can be closed by grounding with elastic force. Only freely In the figure 12, 96 is the suction pipe of the first rotary compression element 32, which is connected to the suction passage 60 of the lower supporting component 56. 97 and 98 are the suction piping and delivery piping of the & rotation compression element 34. The suction piping 9 has one end connected to the closed container 6 above the upper cover 6 6 and the other end connected to the second rotation. The suction passage 58 of the compression element 34. The sending-out pipe 98 is fixed by passing through the sending-out muffler chamber 62 of the second rotary compression element 34. 'At this time, considering the environmental protection, flammability, and toxicity of the earth, Delta uses the above-mentioned natural refrigerant of carbon dioxide (c02), and the lubricant uses H mineral oil, alkylbenzene oil, ether oil, ester oil, etc. Existing oils. σ

313801 .ptd Page 40 564289 V. Starting from the description of the invention (34) Based on the above structure, the operation is described as follows. : The stator coil 28 is given to the electric element "; the stator coil 28 is not equal to two and the rotor 24 is rotated. Due to this rotation, the upper and lower rollers 46, κ that are fitted with the unscrew eccentric portions 42, 44 are eccentric. "The upper and lower breast cylinders are then sucked through the suction pipe 96 and formed at π plus; and the inlet passage 60 is sucked into the low-pressure chamber side of the lower cylinder 4 () by the mouth 162 of the cylinder swing component 56 below the 16th figure. As shown, it is pressed by the action of the second suction wheel 48 and the lower wing 52: / two 56 = = ... sent out formed in the lower branch ... At this time, the suction passage of the refrigerant suction side is in the delivery muffler chamber 64 on the human exit side Refrigerant gas ^ = When the rolling and refrigerant reach, the reading device is located between the two forces of the device accommodation room. The second position is between 5 MPaG and the second communication path 103. It is within ^ 02 ^ The first path 10 And live. And inverse + Yu ...: So the communication path 100 is closed and the intermediate pressure refrigerant gas in the sound chamber 64 of the middle door 1 passes through the closed container 12 (not shown) to become the intermediate pressure ... the intermediate delivery pipe 121. So ' The dense medium temperature rises so that the evaporation temperature of the evaporating gas described later rises to = :, and the refrigerant in the suction passage 60 on the low pressure side Gas and middle ΐ i ΐΜΓ 「V The pressure difference of refrigerant gas within $ 64 has reached the above upper limit value ^ ^ £ Λ t! 02 ^ ϊ η ί, " ^ £ 1〇6'f ^ ^ Valley, or even 1 The communication position of the passage 1 of the brother 2 in 0 2 is the upper position, so the second passage Π) 1 communicates with the second passage 1 〇3, the middle 564289 V. Description of the invention (35) Pressurized refrigerant air flow into The low-pressure side suction path 6 0. Because this intermediate pressure refrigerant flows out (releases) to the suction side and the pressure difference between the two becomes less than 5 MPaG, the valve device returns to the lower communication position than the second passage 1 0 3. Therefore, the communication path 100 (the first passage 1 〇1, the valve device accommodating chamber i 〇2 and the second passage 丨 〇3) are the valve plugs of the valve device 106. The intermediate pressure in the closed container 12 The refrigerant gas passes through the suction piping and enters the suction passage 58 formed in the upper supporting component 5 4 from the inside of the closed container 12, and is then sucked into the upper cylinder 3 through the suction port 161 in the upper view of the upper cylinder 38 shown in FIG. 17. The low-pressure chamber side of 8. The sucked medium-pressure refrigerant gas is applied to the operation of the dead roller 46 and the upper wing 50 to perform the second stage. The refrigerant gas compressed into South Temperature and South Pressure (HP) passes from the high-pressure chamber side through the outlet 39 and from the outlet muffler chamber 62 formed on the upper supporting component 54 through the outlet pipe 9 8 and flows into the multi-stage compression rotary shrink The outside of the machine is not shown in the figure, the device. After that, it flows into the expansion valve (not shown) in sequence from the radiator, and there are electric components 14 in the closed container 12 and it is driven by the electric element = ^ 4 The i and second rotary compression elements 32, 34, the rotary compression element 32 2 compress the refrigerant oxygen sent out, and then compress the multi-stage compression that is sent to the second rotary compression element 34 and compress them. Type wire * Use br to turn the compressor 10 to connect the first one; 5 疋 to the compression element 3 2)) ren 丄 gan #! ^ ^ ^ ^ 1 π π ~ medium suction side and refrigerant delivery side The communication path 1 0 0, U and the valve device 1 06 for opening and closing the continuous refrigerant suction 彳 〇〇〇 of the first rotary compression element 32, the force difference becomes a predetermined upper limit value (5MPaG ') or more = The pressure passage 100 from the refrigerant sending side is opened, so the first stage and the valve unit 106 can reach a stage difference of k. Suppressed to upper limit

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Page 42 564289 Description of the invention (36) Therefore, the destruction caused by the pressure difference is suppressed. * The opening surface of the towel is connected to the bearing sound chamber 64 of the shaft 16 to communicate, and the valve will communicate with the path to reach a small piece. 5 6 forms a continuous assembly, so if the difference between 0 and 5 is eliminated, the first rotary compression element 3 2 can be sent out valve 1 2 7 inside and outside the upper limit value, which can prevent the sending valve 127 from pressure. damage. 'At the same time as the cylinder 4 below the rotary compression element 3 2 constituting the first block will be closed, the suction passage 6 within the lower support part 5 6 with the electric element 丨 4 will be formed, and the delivery will be formed at the lower support zero. The communication path 100 in the module 56 is also provided in the lower supporting component 56, so the 100 and the valve device 106 are concentrated on the purpose of the lower supporting component 56. In addition, the zero group of passages 100 can be supported in the lower part in advance and a valve device 10 can be installed there, and then the assembling operation of the multi-stage compression rotary compressor 10 can be improved. In the embodiment, the rotation axis is The multi-stage compression rotary compressor of the vertical type 10 will be described, but the present invention is applicable even if the horizontal multi-stage compression rotary compressor of the horizontal type is rotated, and it goes without saying. In addition, the upper limit of the differential pressure in the first stage shown in the embodiment is not limited to this, and it can be appropriately set according to the capacity and operating pressure of the rotary compressor. In addition, the multi-stage compression rotary compressor will be described as a two-stage compression rotary compressor having first and second rotary compression elements, but it is not limited to this, even if it has three, four, or four stages The multi-stage compression type rotary compressor of the above rotary compression element can still be applied to the present invention. Next, 'another embodiment of the present invention will be described with reference to the drawings. FIG. 9 is an embodiment of a multi-stage compression type rotary compressor according to the present invention.

313801.ptd Page 43 564289 V. Description of the invention (37) The second section of the rotary compression element 3 2, 3 4 internal intermediate pressure type multi-stage (2-stage) compression rotary compressor is a longitudinal sectional view. In Fig. 19, "1 〇" is an internal intermediate pressure multi-stage compression rotary compressor using carbon dioxide as a refrigerant. This multi-stage compression rotary compressor 10 is a cylindrical container body made of steel plate. 1 2A and a closed container 12 formed by a substantially bowl-shaped lid body 1 2B that closes the opening of the upper portion of the container body 12A, and the electric motor on the upper side of the internal space of the container body 1 2 A that is arranged in this closed container 12 is arranged Element 1 4 is the first rotary compression element 3 2 (paragraph 1) and the second rotary compression element 3 4 (the first rotary compression element 3 2 (paragraph 1) driven by the rotary shaft 16 of the electric component 14 under the electric component 14. Paragraph 2) is composed of a rotary compression mechanism section 18 and the like. The closed container 12 has an oil pan as its bottom. A circular mounting hole 12D is formed in the center of the upper surface of the above cover 12B, and this mounting hole 12D is installed to supply power to the terminal 2 of the electric element 丨 4 (the wiring is omitted and not shown) Show). The electric component 1 4 ′ is composed of a stator 2 2 installed along the inner peripheral surface of the upper space of the closed container 丨 2 and a rotor 24 that is inserted into the stator 2 2 at a certain interval to be inserted. The rotor 24 is fixed to a rotating shaft 16 extending vertically through the center. The stator 22 includes a laminated body 26 in which circular electromagnetic steel plates are laminated, and a stator coil 28 in which teeth of the laminated body 26 are wound in series. The rotor 24 is formed of a laminated body 30 made of an electromagnetic steel plate in the same manner as the stator 22, and a permanent magnet MG is inserted into the laminated body 30. The first rotary compression element 32 and the second rotary compression element 34 have the intermediate partition 36 between them. That is, the first rotation compression element 3 2 and the second rotation

3l3801.ptd Page 44 564289 V. Description of the invention (38) The waste reduction element 3 4 ′ is composed of an intermediate diaphragm 36, which is arranged above and below the intermediate diaphragm 36 and the upper cylinder 38 and the lower cylinder 40. It is fitted on the upper and lower eccentric parts 4 2, 4 4 which are arranged on the rotating shaft 16 with a phase difference of 180 degrees, and the upper and lower rollers 4 6, 4 8 are eccentrically rotated in the upper and lower cylinders 3 8, 40, and abut on The upper and lower rollers 4 6 and 4 8 separate the upper and lower cylinders 3 8 and 40 into upper and lower vanes 5 0 and 5 2 on the low-pressure chamber side and the high-pressure chamber side, respectively. The opening surface and the opening surface on the lower side of the cylinder 40 are closed and are also used as the upper support part 54 and the lower support part 56 of the supporting component of the bearing of the rotating shaft 16 and the like. As shown in Figure 2 2 to Figure 2 5, the upper branch component $ 4 and the lower support component 5 6 are provided with suction inlets 16 1 and 1 6 2 and the upper and lower cylinders 3 8 and 4 respectively. The connected suction passages 58 and 60 and the recessed portions of the upper support component 54 and the lower support component 56 are closed by the cover of the wall to reach the muffler chambers 6 and 64. That is, sending out the muffler chamber 6 2 is in the shape; $: 肖 音 $ 62 Upper part of the wall * 66, sending out the muffler room 64 in the form; into the ° σ⑺ reaches the lower wall cover 6 8 of the muffler chamber 64, Blocked. A bearing ^ is formed in the center of the upper supporting component 54, and a shaft / 4A is formed through the center of the lower supporting component 56. 16 is the upper supporting component 54. Α. Rotary shaft bearing 56A supported by V bearing 54A and the lower support optional component taking lower cover 68 is composed of a sweet circle shape < IB 户 steel plate household; t IA through the first rotary compression element 32 two by two, separated by Chenglian 64 is formed by the main bolts 129 at the periphery, the muffler lifter 56, and the main spiral 129 ...;

564289 V. Description of the invention (39) 5 4 ° Figure 2 2 is the lower view of the lower supporting component 5 6. Figure 1 2 8 is the first rotary compression element used to open and close the outlet 4 1 in the sending silencer. 3 2 of the delivery valve. The first rotary compression element 3 2 of 1 sends 1 muffler chamber 6 4 to communicate with the closed container 12 by a communication path that runs through the upper cover 66, the upper and lower cylinders 38 ^ 4 0, and the intermediate spacer 3 6 Pictured hole. An intermediate delivery pipe 121 is set up from the upper end of the communication path, and the intermediate delivery pipe 1 2 1 sends the intermediate-pressure refrigerant into the closed container 12. The upper cover 6 6 is divided to send out the muffler chamber 62 'which communicates with the inner of the cylinder 38 above the second rotary compression element 3 4 and sends out V 39 and a predetermined interval is left between the upper surface of the upper cover 6 6 and the upper cover. There are electric components 14. The upper cover 66, as shown in FIG. 23, is composed of a substantially circular steel plate having a through hole for the bearing 5 4 A of the upper supporting component 5 4, and the peripheral part is formed by a main screw. Inspection 78 ... Therefore, the top end of this main bolt 78 "is bolted to the lower supporting zero group body 5 6. In Fig. 23, 1 2 7 is attached to the outlet muffler chamber for opening and closing the second rotation compression of the outlet port 3 9 The send-out valve 0 of element 3 4 The send-out valves 127 and .128 are made of flexible metal parts made of metal plates with a substantially rectangular shape in the longitudinal direction. One of the send-out valves 1 2 7 and 1 2 8 abuts on the send-out port 3 9, 4 1 while being closed, the other side is fixed with a bolt (not shown) provided at a predetermined interval from the delivery ports 3 9, 4 1. The delivery valve 127, '] [28, with a certain bullet The pressure abuts on the outlets 39, 41 'and the outlet π 3ί) and 41 can be closed by opening and closing. The second rotary compression element: 3 4 The upper cover 6 6 is provided with the invention

313801.ptd Page 46 564289 V. Description of the Invention (40) — Connected path 2 0 0. This communication path 2000 is the connection of the intermediate pressure refrigerant gas compressed by the member 32 = the A ^ path of the first rotary compression element and the second rotary compression element 7 which is the passage in the closed container 12, And the second end of the piece of water ~ flat media = out side / send out the muffler chamber pg # @ 弟 道 201, the other end is connected to the valve Aigu Valley to 202. The valve device accommodating chamber 200 is a hole penetrating the upper cover 66 in a vertical direction, and the valve is poor: it is 9 n and the valve is placed on the top of the sealed container to the top of the sealed container. On the same day as the mouth, 'lower side' opened in the direction of sending out the anechoic chamber. The upper and lower openings of the chambers of this valve device are plugged with sealing materials 203 and 204 respectively. The sealing material 204 provided in the lower part of the valve device accommodating chamber 202 is provided with a second passage 205 for connecting the valve device accommodating chamber 200 with the sending-out muffler chamber 62. In this way, the first passage 20, the valve device accommodating chamber 200, and the second passage 205 constitute the communication passage 200. The valve device accommodating chamber 200 of the communication path 200 holds a ball-shaped valve device 207, and the upper part of the valve device 207 abuts on a telescopic spring 2 0 6 (spring pressure) Components). The other end of this spring is fixed to the sealing material 203 on the upper side, and the valve device is constantly pushed downward by this spring 206, and the passageway 205 is closed in the normal state. Then, the intermediate pressure refrigerant 1 in the closed container 12 is formed, and the first passage 2 0 1 flows into the valve device accommodating chamber 2 02, and the valve device 2 07 is pushed downward while being 'sent out' out of the muffler chamber 62. The high-pressure refrigerant flows from the second passage 2 0 5 of the sealing material 2 0 4 provided on the lower side into the valve device accommodating chamber 2 02, and the valve device is bounced upward from the bottom. In this way, the valve device 2 0 7 is abutted against the side of the spring 20 6, that is, the refrigerant gas having an intermediate pressure at the top and the spring force are used to spring the valve device downward.

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564289 V. Description of the invention (41) ^^-Refrigerant gas with pressure on the side is spring-pressed. In the normal state, the lower part of the device 2 0 abuts on the second passage 2 0 5 to form a block connected to the intestinal valve device 2 0 7. ^ ^ The spring pressure of the spring 2 0 6 is set so that when the pressure S of the intermediate-pressure refrigerant gas in the closed container 丨 2 and the high-pressure refrigerant gas sent out of the muffler chamber 6 2 ^, the upper limit value is, for example, 8 MPaG. For the i-th path, set 1 to 2 0, the set value of the high-pressure refrigerant gas flowing in from the path 2 0 5 of the brother 2. Therefore, the above-mentioned pressure difference reaches 8 MpaG (at the upper limit, the high-pressure refrigerant gas in the i-th passage 201 through the valve device accommodating chamber 2 0 2 is wider than / out of the muffler chamber 62 ^ closed container 1 2 ⑽ Out. Tian said the pressure difference narrowed to less than 8

阙 The device 2 ° 7 abuts on the second passage 205 to seal it. = The differential pressure between the road 201 and the second channel 205 is too large. , Close the foundation. As a result, as described above, the use of the above-mentioned carbon dioxide (white carbon dioxide, flammability, and toxicity), such as mineral oil, alkyl stupid oil (cc2), natural refrigerants and lubricating oil is prevented from being used in the refrigerant test questions. Using the above structure, the existing oils such as Geming ether oil, ester oil and so on. The wiring is given to the electric components. The operation is as follows. The rotor 24 is rotated via the terminal 20 and a starter (not shown). = When the stator coil 28 is energized, the upper and lower eccentric portions 42 and 44 of the electric component 14 compete for this rotation and are eccentrically rotated within 38, 40 provided integrally with the rotation shaft. people. The upper and lower rollers 4 6 and 4 8 are in the upper and lower cylinders. The suction passage 60 as shown in Figure 23 is drawn from the low-pressure chamber through the lower supporting component 56 which is formed in the lower supporting component. Side

313801.ptd Page 48 564289 V. Description of the invention (42) ~~ Low pressure #, ^ The intermediate pressure is compressed into the high pressure chamber side 4G of the swing cylinder 4G by the action of the lower roller 48 and the lower flap 52. It is formed in the lower middle sending and output silencing chamber 64 and a communication path (not shown) and is sent out from the middle g 1 2 1 into the closed container i 2. Cooling: ΐ: The intermediate-pressure refrigerant gas in the closed container 12 passes through the suction path 58 side of the upper supporting component 54 as shown in the figure. It is sucked into the low-pressure chamber of the upper cylinder 38 by the suction port 161 and enters it .: :: Intermediate pressure refrigerant is compressed into high-temperature and high-pressure refrigerant gas due to the side of the upper roller 46 and the upper wing 52.室 室 62. Mouth 39 reaches the muffler 62 which is formed in the middle of the outlet muffler 62 of the upper supporting component 54. The intermediate pressure refrigerant gas and the muffler are generally described in the closed container I2. If the pressure difference between the valve and m is less than 8MpaG ', then As described above, I am connected to the second passage 205 in the device accommodation room 205, and the second jin of room 62 is not connected to the road 200, so it is sent out to silence the sound in multiple stages. The refrigerant passage all flows into a radiator (not shown) which is managed outside the vehicle-type bismuth rotary compressor. Heater: The refrigerant of the heat sink is heated here to generate heat. The refrigerant crying from the heat is depressurized by a pressure reducing device (not shown) and flows into the unillustrated: λ " state for evaporation. Then it is sucked into the first rotation compression element 32 and the passage 60 again and repeats the above cycle. Low, pi f ΐ The temperature decreases and the evaporation temperature of the refrigerant in the evaporator is reduced. As described, it is also difficult to transfer the pressure (intermediate pressure) of the refrigerant from the first rotary compression element 3 2 to the closed container 1 2. rise. Closed because of this

564289 V. Description of the invention (43) --- When the pressure difference between the intermediate-pressure refrigerant gas in Yi 12 and the high-pressure refrigerant f sent out of the muffler chamber 62 reaches 8 MPaG, due to the pressure in the muffler chamber 62, Sin is connected to the second path 2 05. The valve device 207 rises against the power of the bomb 2206 and is separated by the second path 2 05. Therefore, the first path 2101 and the second path 2 0 5 communication ', the flow of the refrigerant under pressure flows into the closed container on the intermediate pressure side. If the pressure difference between the two fields decreases to less than 8 MPaG, the valve device 7 is closed by the second channel 20 5, and the second channel 2 05 is closed by the valve device 20 7 again. As described above, the sealed container 12 is provided with the electric components 14

This electric element 14 drives the 9th flute 9 A, the younger brother 1 and the second rotary compression element 32, 34, and the first rotary compression element 3 9 car tire β &gt; Shiri Hiroki K &amp;-W The intermediate-pressure refrigerant gas is sucked into the second slave rotor [the element 34 is compressed again by the sender, and the refrigerant path compressed by the first rotary compression element 32 and the second rotary compressor are compressed. The person said, 7 spider holes Yitong 0 ,,, β field ,, η η 〇 / piece of communication path of the refrigerant sending side 20, and a valve device 207 for opening and closing this communication path 200, gas The pressure difference between the refrigerant I and the second rotating compression element 34 Α A and the plant I &amp; W # «ΜΡ Ρ The refrigerant gas at the refrigerant outlet side is the upper limit of two: When the pressure is above MPaG, the communication path is about to be reached. The differential pressure of the segment is suppressed below the upper limit value, and the delivery valve 1 28 of the bismuth-to-compression element 34 is damaged. 38 spots: with: ^ Provide the cylinder sound chamber 62 above the rotating compression element 34 constituting the second and the outlet 66 for separating the compressed refrigerant gas, ... on the wall of the upper cover 62, that is, the upper cover i The inside of 2 is the same as that of the anechoic chamber, and the valve 2 is connected to the closed container <冋 时 ', and the valve device 207 is provided on the upper cover 66.

313801.ptd Page 50 564289 V. Description of the invention (44) ’Therefore, the differential pressure in the second stage can be suppressed without forming the communication path 200 into a complicated structure. In the embodiment, the multi-stage compression type rotary compressor in which the rotary shaft 16 is a vertical type is described. However, the present invention is applicable even if the rotary shaft is a multi-stage compression type in which the rotary shaft is a horizontal type. Needless to say. Furthermore, the multi-stage compression type rotary compressor will be described as a two-stage compression type rotary compressor having first and second rotary compression elements, but it is not limited to this, even if it has three, four, or more stages The present invention is still applicable to a multi-stage compression type rotary compressor of several rotary compression elements. Furthermore, the valve device 2 0 7 in the embodiment is a ball-shaped valve device, but it is not limited to this, and even a cylindrical valve device 2 1 7 as shown in FIG. 21 may be used. In this case, the valve device 2 丨 7 is arranged to abut the wall surface of the valve device accommodating chamber 202 to form a closed structure. In a normal state, it is located in the first passage 2 0 1 and the second passage 2 0 The valve device accommodation chamber 200 between 5 'blocks the communication path 2000. When the pressure difference exceeds 8 MPaG, the intermediary 2 1 7 is pushed up above the first channel 2 0 1, so the first channel 2 01 and the second channel 2 0 5 communicate with each other and the high-pressure refrigerant The air flows into the intermediate-pressure closed container 12. When the pressure difference between the two is less than 8 MPaG, the valve device 2i7 returns below the first channel 2 0 1, so the first channel 2 0 1 and the second channel 2 0 5 are valved 2 1 7 Blocked. k Next, another embodiment of the present invention will be described in detail with reference to the drawings. Fig. 27 is an embodiment of a multi-stage compression type rotary compressor according to the present invention, which is an internal intermediate pressure type multi-stage (2 stage) compression type rotary compressor provided with the Y and second rotary compression elements 3 2, 3 4 A longitudinal sectional view of 10.

313801.ptd Page 51 564289 V. Description of the invention (45) '--- &amp; β, 1' 10 is an internal intermediate pressure multi-stage pressure rotary compressor with carbon dioxide (C02) as the refrigerant, this The rotary compressor 10 is a round-shaped start-closed container 12 made of a steel plate, and an electric TL member 14 disposed on the upper side of the internal space of the closed container 12 is disposed on the lower side of the electric component And the i-th rotary compression element 3 2 (t t) is driven by the electric two-piece 1 4 rotation shaft 丨 6 and the rotary compression formed by the second rotary compression element 3 4 (paragraph 2) Structured by 18, etc. 〆 = The exhaust volume of the second rotary compression element 3 4 of the rotary compressor i 〇 in the example is set to be 'yj \ 〇closed container 1 2 compared with the exhaust volume of the i-th rotary compression element 32 2 The bottom is used as an oil pan, which is used to accommodate the rotary compression mechanism of the electric component 14, the container body of the 8, and the 2A, and the bowl-like shape that is used to close the opening of the upper part of the capacitive body. The cover body 2 B is constituted 'and' on the upper surface of the cover body 12 B is a terminal 20 (supplying a picture is not shown) for supplying electric power to the electric component 14. The electric component 1 4 'is composed of a stator 2 2' which is a women's wear along the inner periphery of the upper space of the closed container 12 and a rotor 24 inserted into the stator 22 to maintain a certain interval therebetween. The rotor 24 is fixed to a rotating shaft 16 extending vertically through the center. The stator 2 2 includes a laminated body 26 in which a circular electromagnetic steel plate is laminated, and a stator coil 28 in which teeth of the laminated body 26 are wound in a series winding manner. The rotor 24 is also formed of a laminated body 30 made of an electromagnetic steel plate in the same manner as the stator 22, and a permanent magnet MG is inserted into the laminated body 30. The first rotary compression element 32 and the second rotary compression element 34

313801.ptd Page 52 564289 V. Description of the invention (46) There is an intermediate partition 36 at intervals. That is, the first rotary compression element 32 and the second rotary compression element 34 are composed of the 'intermediate partition plate 36', which is arranged above and below the intermediate partition plate 36 and the upper cylinder 38 and the lower cylinder 40, which are located in the upper and lower cylinders. 38. Inside, the upper and lower eccentric portions 4 2, 4 4 'and' will be provided with a phase difference of 180 degrees at the upper and lower eccentric portions of the rotating shaft 16 and the lower cylinder 4 will be provided for j The open surface is closed and doubles as a bearing for the bearing of the rotating shaft 16. The upper support component 54 and the lower support component 56 are constructed ^ t 'The first rotary compression element 3 2 is provided and is coupled to the lower The eccentric portion 4 4 eccentrically rotates the lower roller 4 8 and the abutting on the lower roller 4 8 to separate the lower cylinder inside into the low-pressure chamber side and the high-pressure chamber side fins 52. The air cylinder 40 is provided with a guide groove for slidingly accommodating the fin 5 2 and a spring 7 6 arranged outside the guide groove, and the spring 7 6 abuts on the outer end of the fin 5 2 , The flaps 5 2 always press the rollers 4 8. A metal plug 1 3 7 is provided in the accommodating part on the side of the sealed container 丨 2 of the spring 76 to prevent the spring 7 6 from falling. The guide groove 'of the air cylinder 40 communicates with the closed container 12 on the outer end side of the fin 52 to form a structure in which an intermediate pressure in the closed container 丨 2 described later is applied to the fin 52. In the cylinder 38 above the second rotary compression element 34, a swing piston 1 10 is provided. The swing piston 1 10 is composed of a roller portion i 丨 2 and a flap portion i 丨 4 (Fig. 28). . The roller part 1 1 2 is connected to the eccentric part 4 2 above the rotation axis 丨 6, the upper eccentric part 42 rotates in this roller part i 丨 2, and the roller part i 丨 2 itself cooperates with this eccentric rotation of the upper eccentricity = 42 The structure that is eccentrically moved against the inner surface of the cylinder 38. The fin part 1 1 4 ’is rolled over but the roll part 1 丨 2 protrudes in the radial direction and is sleeved

564289 V. Description of the invention (47) The support groove 16b of the liner 116 described later is supported by 16A, and the upper cylinder 38 is divided into a low-pressure chamber side and a high-pressure chamber side (Fig. 28). The upper cylinder 38 is formed with a guide groove 70 extending in the radial direction from the inner periphery, and the inner end of the guide groove 70 is expanded upward and downward to form a substantially cylindrical support hole 88. The above-mentioned bushing 11 6 is inserted into the support hole 8 8, and the shaft of the bushing 1 1 6 in the up and down direction in the support hole 8 8 is rotatably supported. The above-mentioned support groove Π6A is formed through the center of this bushing 1 1 6 in the diameter direction of the bushing 1 16 (radial direction of the upper cylinder 38), and the flap portion 1 1 4 of the swinging piston 1 1 0 is formed. The guide groove 70 passes through the support groove 1 1 6 A and is slidably supported by the branch groove 1 1 6 A. In this state, while the wing part 1 1 4 can move freely within the guide groove 70, the bush 1 1 6 itself rotates, so the swing piston 11 0 itself can smoothly slide and can be shaken freely. Stayed in a branch house. That is, the “swing piston 11 〇” has a roller portion 1 1 2 coupled to an eccentric portion 4 2 formed on the rotation shaft 16 of the electric component 1 4 and eccentrically moved in the upper cylinder 3 8. The portion π 2 protrudes in the radial direction to partition the upper cylinder 38 into the wing portion 11 4 on the low-pressure chamber side and the high-pressure chamber side. Then, the swinging piston 110 can swing in the upper cylinder 38 with the eccentric rotation of the upper eccentric portion 42. In this case, the guide groove 70 and the bush 116 constitute a support portion in the present invention. The gap between the support hole 88 and the bush 1 1 6 and the support groove 11 16A and the wing 1 1 4 can be formed by the pressure of the second rotary compression element 3 4 without any leakage. Due to the manufactured structure, the second rotation

313801.ptd Page 54 564289 V. Description of the invention (49) ^-As for the casing 1 4 4 is located approximately 90 degrees away from the casing 1 4 1 The casing 141 is inserted with a 'for refrigerant One of the ends of the air introduction pipe 92 is the air introduction pipe 92. One end of the refrigerant introduction pipe 92 communicates with the suction passage of the upper cylinder \ 8. This refrigerant introduction pipe passes through the sealed container 丨 2 on the upper side f 144, and the other end is The sleeve 144 communicates with the closed container 丨 2 inside the sleeve 142, and one end of the introduction pipe 94 is inserted to introduce the refrigerant gas into the lower cylinder 40, and one end of the refrigerant introduction pipe communicates with the suction passage of the lower cylinder. The other end of the introduction pipe 94 is connected to a lower end (not shown). A refrigerant outlet pipe 96 is inserted into the sleeve 143, and one end of the refrigerant 9, 6 is connected to the outlet muffler 6 2 1 4 7 In order to support the production of the bracket of μ = accumulator. The structure of the above structure is also guaranteed, and the operation will be explained next. The stator coil 28 of the electric component 14 is energized through wiring not shown in the terminal, and each piece 1 4 starts and the rotor 24 rotates. Due to this rotation, the rotor and the moving body are set up and down. The upper and lower rollers 46 and the lower cylinders 38, 40 fitted with the eccentric portions 42, 44 are eccentrically rotated. The upper and lower portions are sucked through a suction channel formed by the refrigerant introduction pipe 94 and the lower support zero group, and sucked in by a suction pipe (not shown). The low pressure 6 of the lower cylinder 4 is sucked by the mouth = low-pressure (LP: 4MPaG) refrigerant, which is compressed by the movement of the rollers 48 and the fins 52 to become intermediate pressure (MP1: 8MPaG). The unillustrated sending port is sent out of the closed container via the above-mentioned communication path through the sending side sound chamber 64 formed in the lower supporting component 56. The inside of the canceller 12 becomes an intermediate pressure (Μρι).

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Page 56 564289 V. Description of the invention (50) The intermediate-pressure refrigerant gas in the closed container 12 flows out from the sleeve 1 44 and passes through the suction passage formed in the refrigerant introduction tube 92 and the upper supporting component 54. The suction port shown in the figure is sucked into the low-pressure chamber side of the upper cylinder 38. The sucked intermediate-pressure refrigerant gas is slidably supported by the swinging piston 11 in the support groove n6A provided in the sleeve 116 which is rotatably supported in the branch hole 88 of the upper cylinder 38. The flap portion 114 and the roller portion 112) swing into the second stage of compression and become high temperature and high pressure (second stage delivery pressure Hp: 1 2

MPaG) refrigerant gas is sent from the high-pressure chamber side through a not-shown outlet to form the inside of the upper supporting component 5 4 &gt; 1 A ΐ pipe 96 to the outside. Exit the muffler chamber 62, and then flow into the gas cooler and the like through the refrigerant out of the refrigerant. Γ: f to ❸ + 10 (rc, such a high temperature and high pressure refrigerant nt can heat the water in the water storage tank, and can be burned to about +9. On the one hand, the hot water of C, the refrigerant itself flows out of the condenser. However, I, the The body cooler is cooled, and it is vaporized by the gas cooler, and it is stored in the reservoir; 4 γ㈣m hum element 32, the tube 94 repeated as above and then sucked into the $ 1 side and compressed, so it is recognized: 'It constitutes the second rotation The cylinder 38 above the element 34, and the eccentric part 42 of the rotation axis of the H electric element 14 and the roller part 11 2 which moves on the upper gas red / eccentrically move the oscillating piston 1 1 〇, and the oscillating piston 1 1 〇 becomes 6 The roller portion 1 1 2 protrudes in the radial direction, and the upper cylinder 3 8 is partitioned into the low-strength chamber side and the high-pressure chamber side wing portion ii 4. At the same time, the wing portion 114 of the swing piston U0 can slide and swing Freely supported by the upper cylinder 38, so '..., the structure of applying back pressure to the wing and the wing

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Page 57 564289 V. Description of the invention (51) The spring which is pressed on the side of the roller. In particular, in the internal intermediate pressure multi-stage compression type rotary compressor as in the embodiment, since it is not necessary to apply the back pressure to the fins with the sending pressure of the second rotary compression element 34, the rotary compressor 10 can be made The simplification of the structure can greatly reduce the production cost. In the above embodiment, the swing piston 11 0 is provided on the second rotary compression element 3 4, but it is not limited thereto. Even if the swing piston 1 1 0 is provided on the first rotary compression element 32, the present invention is still effective. However, as in the embodiment, only the second rotary compression element 34 is provided with the swing piston 1 10, which can reduce the cost of parts. Furthermore, in the embodiments, the present invention is applied to a multi-stage compression rotary compressor of the internal intermediate pressure type, but it is not limited to this, and even a rotary compressor of a single cylinder type is still effective. Next, 'another embodiment of the present invention will be described in detail with reference to the drawings. Fig. 29 is an internal intermediate pressure multi-stage (2-stage) compression rotary compressor provided with the first and second rotary compression elements 3, 3 and 4 used in the embodiment of the multi-stage compression rotary compressor of the present invention. 10。 A longitudinal sectional view. In the figure, 10 is a multi-stage compression rotary compressor of internal intermediate pressure type using CO? (Carbon dioxide) as a refrigerant. This multi-stage compression rotary compressor i 〇 is a cylindrical closed container made of a steel plate 丨2. The electric component i 4 arranged on the upper side of the internal space of the closed container 12 is arranged, and the lower side of the electric component 14 is arranged and driven by the rotating shaft 16 of the electric component 14

Rotary compression element 32 (first paragraph), Chu # 丝 两, ^ L if again), the second rotary compression element 3 4 (second paragraph) formed by the rotary compression mechanism section 丨 8 and so on. The closed container 1 2 ′, with its bottom as the oil pan, is used to contain the container body i2A of the electric element 14 and the rotary compression mechanism portion 18, and

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Page 58 564289 V. Description of the invention (52)-The container is closed by a bowl-shaped lid with an opening π on the upper part of the container body 12A. In addition, a circle is formed in the center of the upper surface of the cover 12B: a structured hole (2D, a towel is fixed to the mounting hole 12D by welding)

Terminal 2 0 of component 14 (wiring is not shown). 7L The above-mentioned electric component 14 is formed by the stator 22 installed along the inner peripheral surface of the hermetic container and the rotor 24 inserted into the device at an interval of ^ = within this stator 22. &amp; rotor 24 is fixed to the rotation axis 16 extending in the vertical direction., ** 中 ％ # 26 定 ： Laminated body 2 6 ′ formed by laminating circular electromagnetic steel plates and the laminated body 2 β Xi method pre-addition basket Zb The tooth 4 is constituted by a stator coil 28 that is wound in series winding. The rotor ^ is also made of a laminated steel sheet 30 made of an electromagnetic steel plate similarly to the stator 22, and then a permanent magnet MG is inserted into the laminated body 30. The first rotary compression element 32 and the second rotary compression element 34 are separated by an intermediate partition 36. That is, the i-th rotary compression element 32 and the second rotary compression of the rotary compression mechanism 18 Element 3 4 is composed of an intermediate partition plate 36 and cylinders 38 and 40 arranged above and below the intermediate partition plate 36, and is fitted at a phase of 180 degrees within the upper and lower cylinders 38 and 40. The difference is set on the upper and lower eccentric parts of the rotating shaft 1 6, 2, 4, and 4. The eccentric rotation of the upper and lower rollers 4, 6, 4, 8 is a crime. The rollers separate the upper and lower cylinders 38, 40 into the low-pressure chamber side and the upper and lower wing #, not shown, and the upper and lower openings of the upper cylinder 38 and the lower side of the lower cylinder 40, respectively. The open surface is closed and is also used as a supporting component of the bearing of the rotating shaft 16 and a lower component 56 of the instrument. The upper &quot; 卩 supporting component 5 4 and the lower supporting component 5 6 are provided in the Suck

564289 V. Description of the invention (53) ---- The entrances 1 6 1 and 1 6 2 each have a famous soil "the upper and lower lice tanks 3 8, 40 and the internal inhalation passages 58 and 60 and 'cause a part of the depression and Open the recessed part above the upper part of the lower part of the cover 闭 6 8 and close the base and send it out of the muffler chambers 6 2 and 6. 4. Send out the muffler chamber 64 and the closed container 12 to penetrate the upper and lower cylinders 40 and the intermediate partition 36. A communication path (not shown) communicates, and an intermediate protruding tube 1 2 1 is provided on the communication path. The middle delivery pipe 121 is sent out of the closed container 12 and the upper cover 66 is partitioned to form a second rotary compression element. The upper muffler chamber 62 inside the cylinder 38 is separated from the upper cover 66 above the upper cover 66. Electric components 14 are provided at predetermined intervals. At this time, considering the environmental protection, flammability, and toxicity of the earth, the above-mentioned carbon dioxide (CO 0 natural refrigerant is used as the refrigerant, and the lubricating oil is, for example, mineral oil, alkyl stiff oil, Ether oil, ester oil, pAG (polyalkylene glycol) and other existing oils The sides of the container body 1 2 A of the fork closure 12 are welded and fixed respectively, and the suction passages 5 8 and 60 of the upper support component 5 4 and the lower support component 5 6 are sent out of the muffler chamber 6 2 at Corresponding to the upper side of the upper cover 6 6 (approximately corresponds to the position of the lower end of the electric component 14), there are sleeves 1 4 i, 142, 14 3, and 144. The sleeves 141 and 14 2 are adjacent to each other up and down, and the sleeve η 3 is located approximately on the diagonal of the casing 14 1. As for the casing 1 4 4, it is located approximately 90 degrees away from the casing 1 4 1. The casing 141 is inserted into the casing 141 for the refrigerant gas. One end of the refrigerant introduction pipe 92 introduced into the upper cylinder 38 is connected to one end of the upper cylinder 38

313801.ptd Page 60 564289 V. Description of the invention (54) Inhalation path 58. This refrigerant introduction pipe passes through the upper side of the hermetic container 12 to reach the casing 1 4 4. The other end is inserted into the casing 1 4 4 and communicates with the interior of the hermetic container 1 2 ° inside the casing 1 4 2. One end of the refrigerant introduction pipe 94 is inserted into the lower cylinder 40, and one end of the refrigerant introduction pipe communicates with the suction passage 60 of the lower cylinder 40. The other end of the refrigerant introduction pipe 94 is connected to a lower end of a reservoir (not shown). A refrigerant outlet pipe 96 is inserted into the sleeve 1 4 3, and one end of the refrigerant outlet pipe 96 is connected to the outlet muffler chamber 62. The above-mentioned reservoir is a storage tank for gas-liquid separation of the sucked refrigerant, and is hoisted through a bracket (not shown) on the reservoir side, and is welded and fixed to the upper side of the container body 12 A of the sealed container 12 Frame 1 4 7. Fig. 30 shows the refrigerant flow path of the water heater 153 using the embodiment of the present invention. The above-mentioned multi-stage compression rotary compressor 10 constitutes a part of the refrigerant flow path of the water heater 153 shown in Fig. 30. . The refrigerant outlet pipe 9 6 of the above-mentioned multi-stage compression rotary compressor 10 is connected to the inlet of the gas cooler 1 54, and the gas cooler i 54 is installed in the water heater 1 5 3 to heat cold water into hot water. Shown hot water tank. The piping from the gas cooler 1 5 4 reaches the inlet of the evaporator 15 7 through the first pressure reducing device, that is, the expansion valve 1 5 6, and the outlet of the evaporator 15 7 passes through the above-mentioned accumulator (No. 3 0). (Not shown) is connected to the refrigerant introduction pipe 94. In order to introduce the refrigerant in the closed container 1 2 into the refrigerant introduction pipe (refrigerant passage) 9 2 of the second rotary compression element 3 4, the defrost pipes 1 5 8 ′ constituting the defrost flow path are divided and constituted by The solenoid valve 1 5 9 of the first flow path control device is connected to the refrigerant outlet pipe 9 6 leading to the inlet of the gas cooler 15 4.

313801.ptd Page 61 564289 V. Description of the invention (55) Piping = Phase between the control device of the expansion circuit 156 and the evaporator 15? = In addition, the frost tube 168 and the first frost The divergence point of the tube 158 = two solenoid valves 169. In addition, in addition to the second flow path control device, the valve opening and closing of the valve 169 and the solenoid valve 163 are controlled by the control device and the weight. The solenoid valve 163 is opened by the control device 164 during the normal heating operation and closed during the defrosting operation. Therefore, during the defrosting operation, the refrigerant gas supplied to the second rotary compression element 34 passes through the capillary 16 (the decompression device) provided in the refrigerant introduction pipe 92 (refrigerant passage), and is then decompressed and supplied to the first 2 of the rotary compression element 3 4. Therefore, as will be described later, a pressure difference occurs between the suction side and the delivery side of the 2nd 2nd compression compressor 34, so the P-side flaps can be dropped 'and the unstable operation during defrosting operation can be avoided. Conditions to improve reliability. With the above structure, the operation is as follows. Among them, the control device 16 4 closes the solenoid valves 15 9 and 16 9 during the heating operation, and the solenoid valve 16 3 is opened as described above. ′ 丨 The stator coil 2 is supplied to the electric component 丨 4 by the terminal 20 and a wiring (not shown). Then, the electric component 14 is started and the rotor 24 is rotated. Due to this rotation, the upper and lower eccentric portions 4 2 and 4 4 are integrally provided with the upper shaft 16 and the lower rollers 4 6 and 4 8 rotate eccentrically in the upper and lower cylinders 3 8 and 40. Yu Qi sucks the low pressure on the low-pressure chamber side of the lower cylinder 40 through the suction passage 6 formed in the refrigerant introduction pipe g 4 and the lower supporting component 5 6.

564289 V. Description of the invention (56) (Stage 1 suction pressure LP: 4MPaG) The refrigerant gas is compressed by the action of the roller 48 and the fins to become an intermediate pressure (MP1: 8MPaG). An unillustrated delivery port on the side is sent out of the closed container 12 through an output silencing chamber 64 formed in the lower supporting component and an intermediate delivery pipe 1 2 1 which is not shown in the figure. Then, the inside of the closed container 12 becomes an intermediate pressure (MP1). Then, the medium-pressure refrigerant gas in Φ closed volume 1 2 comes out from the refrigerant introduction pipe 92 of the casing 1 4 4 (the middle delivery pressure is the aforementioned MPO, and is connected in parallel to the capillary 1 of this refrigerant introduction pipe 9 2 The solenoid valve 1 6 3 of 60 is sucked into the low-pressure chamber side of the upper cylinder 3 8 through the suction passage 5 8 formed in the upper support part 5 4 (second stage suction pressure). The intermediate-pressure refrigerant gas' is compressed by the action of the roller 46 and the fins (not shown) to become the refrigerant gas of high temperature and south pressure (the second stage sends out the pressure HP: i2MPaG), which is sent from the high-pressure chamber. The side passes through an outlet (not shown), flows into the gas cooler 54 through an outlet muffler 6 2 and a refrigerant outlet pipe 96 formed in the upper branch component 54, and the refrigerant temperature at this time rises to approximately +1. (rc, such high-temperature and south-pressure refrigerant gas heats the cold water in the hot water storage tank through the heat of the gas cooler, and can be heated to about + 90 ° C. On the one hand, the refrigerant itself is in the gas cooler 丨 54 Is cooled and flows out of the gas cooler, and then, after being depressurized by the expansion valve 156, the flow The hair dryer 157 (at this time absorbs heat from the surroundings) passes through the accumulator through the refrigerant introduction pipe 94 and then sucks the second rotating compression element 32 inside the first and second cycles repeatedly. In an environment where the outside air temperature is extremely low, so &lt; heating If it is running, it will frost on the hair dryer 157. Therefore, the control device 164 operates regularly or by any means ^ to open the solenoid valves 1 5 9 and 1 6 9 'close the solenoid valve 6 3 and expand

313801.ptd Page 63 564289 V. Description of the invention (57) The service valve 1 5 6 is fully open to perform the defrost operation of the evaporator 5 7. Since the solenoid valves 1 59 and 169 are open, the refrigerant gas in the closed container sent by the first rotary compression element 3 2 is divided into two paths, all the way through the refrigerant introduction pipe 9 2, the defrost pipe 1 5 8, and the refrigerant sent out. Pipe 9 6 and defrosting pipe 1 6 8 flow into the downstream side of the expansion valve 1 5 6. The other path passes through the gas cooler 154 and the expansion valve 156 (full open state). Both paths flow directly into the evaporator 1 without pressure reduction. 5 7. The refrigerant gas sent by the rotary compression element 34 of 苐 2 passes through the refrigerant delivery pipe 9 6 and the defrost pipe 1 6 8 to the downstream side of the expansion valve 1 5 6 and directly enters the hair dryer 1 without reducing the pressure. 5 7. Since the high-temperature refrigerant flows into the 'evaporator 1 5 7 and is heated, the frost is melted and removed. Since the solenoid valves 1 59 and 169 are open, the delivery side and the suction side of the second rotary compression element 34 are communicated through the refrigerant delivery pipe 9 6, the defrost pipe 1 8 and the refrigerant introduction pipe 92, In this situation, both sides will have the same pressure, but in the present invention, the solenoid valve 1 6 3 is closed during the defrosting operation, so the suction side (the refrigerant introduction pipe 9 2 side) of the second rotary compression element 34 is formed with A capillary state of 160 was interposed between the delivery sides (the refrigerant delivery pipe 96 side). Then, 'the first rotary compression element 32 is compressed and sent out of the closed container 12', and the refrigerant gas supplied to the second rotary compression element 34 through the refrigerant introduction pipe 92 is supplied to this capillary 16 The second rotary compression element 34. That is, because the pressure is reduced through the capillary i 60, the second rotary compression element 34 = a pressure difference is generated between the suction side and the delivery side, so that the fins can be prevented from falling. 'Unstable operation conditions during defrosting operation are avoided. , Which can improve reliability. Such defrosting operation, for example, at a predetermined end temperature and time of defrosting

313801.ptd Page 64 564289 V. Description of the invention (59)-The pressure on the wings is applied to the wing # ′, so that the pressure of the wing on the roller can be appropriately adjusted. -The increase in the mouth's load on the large end of the fin and the sliding portion on the outer periphery of the roller is reduced, which can improve the durability of the fin and the roller, and prevent the fin ^ roller from being damaged. In addition, according to the invention in item 3 of the scope of patent application, in addition to the above structure w, it also has: while closing the opening surface of the cylinder, supporting components that are bearings of the rotating shaft of the electric component, And, the $ out and elimination in the supporting component is formed, and the communication path is formed in the supporting and selecting component to communicate with the muffler chamber and the back pressure chamber. At the same time, the pressure regulating valve is provided in the supporting component, so that In the case of effectively utilizing the limited space in the closed container without complicating the structure, the pressure in the back pressure chamber of the fin can be adjusted. In addition, since the communication path and the pressure regulating valve are provided in the supporting component in advance, the assembling workability is good. Furthermore, the “private”: the invention in item 4 of the scope of patent application is a method for manufacturing a multi-stage compression rotary compressor. The multi-stage compression compressor has a sealed container with electric components and is driven by the electric components. The rotary compression elements of 2 are composed of the first and second rotary compression elements and the first and second eccentric parts fitted in the first and second eccentric parts formed on the rotary shaft of the electric element. The multi-stage compression rotary compressor is composed of the first and second rollers eccentrically rotating in the cylinder, and sucks and sends the refrigerant gas compressed and sent by the first rotary compression element to the second rotary compression element. Without changing the thickness dimension of the first cylinder, by changing the inner diameter of the cylinder, the rows of the first and second rotary compression elements are set.

3l3801.ptd Page 66 564289 V. Description of the invention (60) The air volume ratio, so there is no need to change all the components such as the cylinder blank of the first rotary compression element or the roller, the eccentric part of the rotary shaft, etc., but only the change For example, the extremely small range of the roller or the roller and the eccentric portion reduces the cost. In addition, it is possible to prevent the entire size of the compressor from being enlarged, and to reduce the size. In addition, for example, in the second scope of the patent application, the exhaust volume of the second rotary compression element is set to 40% to 75% of the exhaust volume of the first rotary compression element. The exhaust volume ratio of the rotary compression element will be the most appropriate. In addition, according to the invention in item 6 of the scope of the patent application, it is a multi-stage compression type rotary compressor, which includes an electric component in a hermetic container, and the first and second rotary compression components driven by the electric component will pass through The refrigerant gas compressed and sent by the first rotary compression element is sucked in and compressed by the second rotary compression element, and has a communication path for connecting the refrigerant suction side and the refrigerant sending side of the first rotary compression element, and The valve device for opening and closing the communication path opens the communication path when the pressure difference between the refrigerant suction side and the refrigerant delivery side of the first rotary compression element is a predetermined upper limit value. Therefore, the first stage can be opened. The step differential pressure, that is, the pressure difference between the refrigerant suction side and the refrigerant delivery side of the first rotary compression element is suppressed below a predetermined upper limit value. As a result, it is possible to avoid a bad situation such as damage to the delivery valve of the first rotary compression element due to the excessive differential pressure in the first stage, and to improve the durability and reliability of the compressor. Furthermore, according to the invention in item 7 of the scope of the patent application, since the cylinder having the first rotary compression element is provided to close the opening surface of the cylinder, the bearing of the bearing of the rotary shaft of the electric element is supported. Building Zero Group

3l3801.ptd

Page 67 564289 V. Description of the Invention (61)

^, And 'Constructed here to support zero to zero, the sub-a communication path is formed while supporting the anechoic chamber, while the valve can be concentrated on the communication path and the valve device to achieve miniaturization, it is obtained by pre-assembly workability. improve. The suction passage in the module and the sending-out muffler component are connected to the suction channel and the delivery device and are installed in the component. Therefore, the valve device of the first rotary compression element is first installed in the cylinder. 7 The invention claimed in item 8 of the scope of the patent includes an electric element and an i-th and a second rotary compression element driven by the electric element in an airtight container, and an intermediate pressure compressed by the i-th rotary compression element. The refrigerant gas that is sucked in by the second rotary compression element and compressed is sent out. The multi-stage compression rotary compressor is provided with a passage for communicating the intermediate-pressure refrigerant gas compressed by the first rotary compression element with the second one. The communication path of the refrigerant sending side of the rotary compression element, and a valve device for opening and closing the communication path. The pressure difference between the intermediate pressure refrigerant gas and the refrigerant gas on the refrigerant sending side of the second rotary compression element is The communication path is opened above the predetermined upper limit value, so the pressure difference between the second rotary compression element and the suction pressure, that is, the second stage pressure difference suppression = force Value below. ; Upper limit With this, the sending failure of the second rotary compression element can be avoided before it happens. In addition to the damage of the valve, according to the invention in the ninth scope of the patent application, in addition to the above-mentioned &amp; two and the above-mentioned rotary compression element constituting the second rotation compression element, it is used to send out the compression in the cylinder Send out the refrigerant gas' mute the intermediate-pressure refrigerant gas 9 to 'compressed by the first rotary compression element' k

313801.ptd Page 68

564289 V. Description of the invention (63) The rotary compression element, the first rotary compression element sends the compressed C0 refrigerant gas out of a closed container, and the medium-pressure gas sent out is compressed by the second rotary compression element. The rotary compressor further includes a swing piston which is a cylinder constituting the second rotary compression element and has a roller portion which is eccentrically moved in the cylinder and formed on an eccentric portion surface of a rotary shaft of the electric component. The swinging piston protrudes in a radial direction from the roller portion to separate the inner portion of the cylinder into a low-pressure chamber side and a high-pressure chamber side fin portion, and a support portion provided on the cylinder to support the wing blade of the swing piston to be slidably and swingably supported Therefore, in the same way as the eccentric rotation of the eccentric part of the rotary shaft, the swing piston swings and slides with the support as the center, and its fin section constantly separates the inside of the second rotary compression element into the low-pressure chamber side and High-pressure chamber side. Therefore, there is no need to configure a spring and a back pressure chamber for urging the flaps against the roller side as before, and a structure for applying a back pressure to the back pressure chamber. Especially if the multi-stage compression type rotary compressor with intermediate pressure in the hermetic container of the present invention, the structure of applying back pressure will be quite complicated, but the structure will be significantly simplified and the production cost will be obtained by using a swing piston. Significantly reduced. In addition, according to the invention in item 12 of the scope of the patent application, the support portion is formed in the cylinder, and the guide groove by which the wing portion of the swinging piston can move freely and can be rotated freely. The bushing provided in the guide groove and movably supporting the above-mentioned fin portion can make the swinging and sliding movement of the swinging piston smooth. Therefore, the performance and reliability of the rotary compressor can be greatly improved. Furthermore, according to the invention in item 13 of the scope of the patent application, the reason is that: the sealed container is provided with the electric component and the first component driven by the electric component.

313801.ptd Page 70 564289 V. Description of the invention (64) 1. The second rotary compression element is a multi-stage compression rotary compressor that compresses the refrigerant compressed by the first rotary compression element by the second rotary compression element. The gas cooler to which the refrigerant sent by the second rotary compression element of the multi-stage compression rotary compressor will flow is connected to the first pressure reducing device on the outlet side of the gas cooler, and is connected here The first pressure reducing device is composed of an evaporator on the outlet side, and the refrigerant flowing out of the evaporator is compressed by the first rotating compression element. This refrigerant flow path includes: a defrosting flow path for supplying the refrigerant sent by the first and second rotary compression elements to the evaporator without being decompressed; and a first flow path for controlling the refrigerant flow in this defrosting flow path A flow path control device; a second pressure reducing device provided to supply the refrigerant sent by the first rotary compression element to the refrigerant path of the second rotary compression element; and a control unit for controlling the refrigerant Flow into the second pressure reducing device, or make the refrigerant bypass the second pressure reducing device and flow through the second flow control device, and let the first flow control device discharge the refrigerant to the defrosting flow. The second flow control device will release the refrigerant to the second decompression device. Therefore, when evaporating and defrosting, the first rotation compression element and the second rotation compression element ~ Refrigerant is supplied to the evaporator without decompression, and the reversal of pressure can be prevented from occurring in the second rotary compression element. First, according to the present invention, during the defrost, the refrigerant supplied to the second rotary compression element passes through the second rotary compression element provided in the refrigerant passage, so it is between the second rotary compression element being discharged. Make up the predetermined pressure difference. Therefore, the stable operation ratio of the second rotary compression element can be made reliable.

$ 71 pages 564289

313801.ptd Page 72 564289 Brief Description of Drawings [Simplified Description of Drawings] Figure 1: A longitudinal sectional view of a multi-stage compression rotary compressor according to an embodiment of the present invention. Fig. 2: An enlarged sectional view of the pressure regulating valve portion of the second rotary compression element of the multi-stage compression rotary compressor in Fig. 1. Fig. 3: Front view of the multi-stage compression rotary compressor in Fig. 1. Figure 4: Side view of the multi-stage compression rotary compressor in Figure 1. Fig. 5: The refrigerant flow diagram of the hot water heater using the multi-stage compression rotary compressor in Fig. 1. Fig. 6: A graph showing the relationship between the outside air temperature and the pressures of the multi-stage compression rotary compressor. Fig. 7 is a longitudinal sectional view of a multi-stage compression type rotary compressor according to an embodiment of the present invention. Fig. 8: Front view of the rotary compressor in Fig. 7. Figure 9: Side view of the rotary compressor in Figure 7. Fig. 10: A refrigerant flow diagram of a water heater using the rotary compressor in Fig. 7. Figure 11: A graph showing the relationship between the outside air temperature and various pressures in a multi-stage compression rotary compressor. Fig. 12: A longitudinal sectional view of a multi-stage compression type rotary compressor according to an embodiment of the present invention. Fig. 13: An enlarged sectional view of the communication path portion of the first rotary compression element of the multi-stage compression type rotary compressor in Fig. 12. Figure 14: Lower part of the multi-stage compression rotary compressor in Figure 12

313801.ptd Page 73 564289 Schematic illustration of the bottom view of the supporting components. Fig. 15: An upper view of the upper supporting components and the upper cover of the multi-stage compression rotary compressor in Fig. 12. Figure 16: The bottom view of the cylinder below the multi-stage compression rotary compressor in Figure 12 Figure 17: The top view of the cylinder above the multi-stage compression rotary compressor in Figure 12 Fig. 18: A graph showing the relationship between the outside air temperature and various pressures of a two-stage compression rotary compressor. Fig. 19 is a longitudinal sectional view of a multi-stage compression type rotary compressor according to an embodiment of the present invention. Fig. 20: An enlarged cross-sectional view of the communication path portion of the second rotary f-reduction 7L member of the multi-stage compression rotary compressor of Fig. 19. 〇 / End 2 Top view: An enlarged sectional view of the communication path part of the second bismuth-to-compression element of the multi-stage compression rotary compressor of the other embodiment. β φ f! 2 Figure 19 is a view of the components of the lower branch of the multi-stage compression rotary compressor. Figure 23: Figure 19: Supporting components and upper cover Figure 24: Figure 19: Lower view. Upper view of the multi-stage compression rotary compressor. Cylinder under the multi-stage compression rotary compressor Cylinder under the multi-stage compression rotary compressor Fig. 25: Fig. 19 Top view. Figure 26: A graph showing the relationship between the outside air temperature and various pressures

564289 Brief Description of Drawings Figure 27: A longitudinal sectional view of a multi-stage compression type rotary compressor using an embodiment of the present invention. Fig. 28: A refrigerant flow path diagram of the water heater using the present invention. Fig. 29: A longitudinal sectional view of a rotary compressor according to an embodiment of the present invention. Fig. 30: An enlarged sectional view of the swinging cylinder portion of the second rotary compression element of the rotary compressor in Fig. 29. 10 Rotary compressor 12 Closed container 12A Container body 12B Cover 12D Mounting hole 14 Electric component 16 Rotary shaft 18 Rotary compression mechanism section 20 Terminal 22 Stator 24 Rotor 26 ^ 30 Laminated body 28 Stator coil 32 First rotary compression element 34 Second Rotary compression element 36 Intermediate bulkhead 38 Upper cylinder 39 ~ 41 Send out a 40 Lower cylinder 42 ^ 44 Eccentric 46 ^ 48 Roller 50 ^ 52 Wing 54 Upper support component 54A, '56A Bearing 56 Lower support component 58 ^ 60 Suction passage 62 &gt; 64 Send out muffler room 66 Upper cover 68 Lower cover 70 Guide groove 70A Receiving section 74 '76 ^ 2 0 6 Spring

313801.ptd Page 75 564289

Brief description of the drawing 78 Main screw 88 Support hole 92 &gt; 94 Refrigerant introduction pipe 96 Refrigerant delivery pipe 97 Suction pipe 98 Delivery pipe 99 Back pressure chamber 100 '200 Communication path 10 Bu 201 First passage 102 Valve storage chamber 103 ~ 2 0 3 ,, \ 2 0 4 sealing material 104 Spring parts 105 Valve body 106 ~ 205 Second passage 107 Pressure regulating valve 110 Swing piston 112 Roller part 114 Wing part 116 Bushing 1 16A Support groove 121 Middle protruding pipe 127 ^ 128 Send-out valve 129 Main bolt 137 Plug 14 Bu 142 U3, 144 Bushing 146 Reservoir 147, 148 Bracket 153 Water heater 154 Gas cooler 156 Expansion valve 157 Evaporator 158 ^ 168 Defrost tube 159 ~ 163 1 6 9 Solenoid valve 160 Capillary tube 16 162 Suction port 164 Control device 202 Valve device accommodating chamber 2 0 7 '217 Valve device 313801.ptd page 76

Claims (1)

564289 Amendment No. 91 on 23073 six1 · Patent application scope A multi-stage compression type rotary compressor, which is provided with electric components in the snap-locks, and the first and second rotary compression components driven by the electric components The refrigerant gas compressed by the first rotary compaction element is sent out of the sealed container, and the intermediate pressure refrigerant gas sent out is compressed by the multi-stage compression rotation of the second rotary compression element. The compressor includes: ~ an air cylinder constituting the second rotary compression element and a roller fitted in an eccentric portion formed on a rotation shaft of the electric component and rotating eccentrically in the cylinder; The above-mentioned cylinder is partitioned into wing blades on the side of the low-pressure pressure chamber, which is used to constantly spring the fins to the back pressure chamber on the roller side, and is used to communicate with the second upper compression chamber of the rotary compression element. The communication path, and the dagger, are connected by the a-hai communication path to adjust the force applied to the above-mentioned back pressure chamber. The multi-stage compression rotary compressor of item 1 of Zhongshenyuan Patent, the above-mentioned ^^^ pressure wire adjustment valve maintains the pressure of the back pressure chamber to be more than the hermetically sealed capacity 疋 Λ compression / 1 piece of refrigerant The pressure on the sending side is lower than the predetermined value if the pressure of • Rushen = ϋ is high. Among them, the multi-stage compression rotary compressors named as the first or second part of the patent consumption, γ, γ, have: Electric: The opening surface of i L gas i is closed, and the supporting components of the bearing of the above-mentioned rotating shaft, as well as, 313801. Ptc Page 77 564289 Amendment ^^^ JH23073 6. The scope of the patent application is composed of the sending muffler chamber in the supporting component, and the above communication path is formed in μ # sending out the muffler chamber disc above the buttons to communicate with the above master. At the same time as the M chamber, it is placed in the above supporting components. The above &amp; force δ weekly integral valve is set. 4. A multi-stage compression type rotary compression flop Π &amp; iw The first and second rotations and fittings driven by the electric component are formed on the upper eccentric portion, and each of the above is provided with the electric component in a closed container, and the first and second rotational compression are moved. Element, this M thin element is composed of the first and second cylinders and the first and second rollers eccentrically rotated in the first and second cylinders of the rotation axis of the electric component, and the aforementioned first The refrigerant gas compressed and sent by the rotary compression element of No. 1 is sucked into the above-mentioned rotary compression element of No. 2 and sent out by compression. The manufacturing method of this multi-stage compression type rotary compressor includes: The thickness dimension of the above No. 1 cylinder is not changed, and The inner diameter of the cylinder is changed to set the exhaust volume ratio of the above-mentioned first and second rotary compression elements. 5 · As in the method of manufacturing a multi-stage compression rotary compressor in the fourth item of the patent application, where The exhaust volume of the second rotary compression element is set to be 40% to 75% of the exhaust volume of the first rotary compression element. 6. A multi-stage compression type rotary compressor is provided with: There are electric components, and the first and second rotary compression components driven by the electric components will be the first rotary 313801. ptc page 78 564289 amended ΛΙ ^ Π23073, the scope of the patent application for the conversion of the compression element, and, the π two stem &amp; the refrigerant gas out of the 纟 百 迗 is sucked and compressed by the second rotary compression element A multi-stage compression type rotary compressor includes: a refrigerant suction eight-side spot for connecting the above-mentioned first rotary compression element; a communication path on the exit side of the sister, Sheshan Xi㈣7, and a valve for opening and closing the communication path When the pressure difference between the refrigerant suction and delivery side of the first rotary compression element is greater than a predetermined upper limit, the communication path is opened. • :: The multi-stage compression rotary compressor with 6 items in the May patent scope, among which is special: The cylinder constituting the above-mentioned first rotary compression element is used to close the opening surface of the cylinder, and has the above-mentioned electric component. The supporting component of the bearing of the rotating shaft, and the suction passage and the outlet muffler chamber formed in the remote support component; the communication path is formed in the support component to communicate the suction path and the outlet muffler, and the valve The device is installed in the above components. 8-A multi-stage compression type rotary compressor, which is equipped with electric components in a sealed container, and the first and second rotary compression components driven by the electric components. The compressed intermediate-pressure refrigerant gas is a multi-stage compression rotary compressor that is sucked in and compressed by the second rotary compression element. 313801. ptc, page 79, 564289, _Case No. 91123073, amended on cf date of the month of the 6th, the scope of the patent application This multi-stage compression rotary compressor is equipped to communicate with the intermediate pressure refrigerant gas compressed by the first rotary compression element The passing path is a communication path with the refrigerant sending side of the second rotary compression element, and a valve device for opening and closing the communication path. The valve device is based on the intermediate pressure refrigerant gas and the second rotary compression element. When the pressure difference of the refrigerant gas on the refrigerant sending side is equal to or more than a predetermined upper limit value, the communication path is opened. 9. The multi-stage compression rotary compressor according to item 8 of the scope of patent application, which includes a cylinder constituting the second rotary compression element and a muffler chamber for sending the refrigerant gas compressed in the cylinder, The intermediate-pressure refrigerant gas compressed by the first rotary compression element is sent out of the sealed container, and the second rotary compression element sucks the intermediate-pressure refrigerant gas in the sealed container, and the communication path is formed at The inside of the wall of the sending-out silencing chamber is partitioned to communicate the inside of the closed container and the sending-out silencing chamber, and the valve device is provided in the wall. 1 0. A rotary compressor comprising a rotary compressor provided with an electric element in a closed container, and a rotary compression element driven by the electric element, and the rotary compressor compressing a CO medium using the rotary compression element is provided. Rotate the cylinder of the compression element, 313801. ptc page 80 564289 _ case number 91123073_ year ^ month sand __ VI. The scope of the patent application has a roller part that is connected to the eccentric part formed on the rotating shaft of the electric component and moves eccentrically in the cylinder. The swing piston is formed on the swing piston, and the roller portion protrudes in a radial direction to separate the inner portion of the cylinder into a low-pressure chamber side and a high-pressure chamber side fin portion, and is provided on the cylinder, and the wing blade of the oscillating piston may be A supporter that slides and swings freely. 1 1. A rotary compressor comprising: an electric element in a sealed container; and first and second rotary compression elements driven by the electric element. The first rotary compression element compresses the compressed CO. The medium gas is sent out of the above-mentioned closed container, and the medium-pressure gas sent out is compressed by the second rotary compression element, and the rotary compressor includes a cylinder constituting the second rotary compression element, and And a swing piston which is combined with a roller portion formed on an eccentric portion of a rotation shaft of the electric component and eccentrically moves in the cylinder, and is formed on the swing piston, and the roller portion protrudes in a radial direction to partition the inside of the cylinder into The vane portions on the low-pressure chamber side and the high-pressure chamber side, and a support portion provided on the cylinder and supporting the vane of the swinging piston slidably and swingably. 1 2. The rotary compressor according to item 10 or 11 of the scope of patent application, wherein the support part is formed in the above-mentioned cylinder and is made by the above-mentioned swing piston. 313801. ptc page 81 564289 VI. Patent application scope = the guide groove where the fin part can move freely and… sighed by the guide groove and the bush which can slide the fin part freely ^ .卞 乂 Support 1 3. —A defrosting device for a refrigerant flow path, which is provided with an electric element and a first and second rotary compression element driven by the electric element in a closed container. The compressed refrigerant is compressed by the multi-stage compression rotary compressor of the second rotary compression element described above, and the refrigerant sent from the second rotary compression element of the multi-stage compression rotary compressor flows into the &amp; The gas cooler 'and the first dust reducing device connected to the outlet side of the gas cooler, and the evaporator connected to the outlet side of the first pressure reducing device and the like are composed of the evaporator. The refrigerant flowing out of the refrigerant flow path compressed by the first rotary compression element includes: · The refrigerant sent from the first and second rotary compression elements is supplied to the evaporator without being decompressed. The first defrosting flow path is used to control the refrigerant flow of the defrosting flow path. The first flow path control device is provided for supplying the refrigerant sent from the first rotary compression element to the second flow path. The second passage of the compression path of the rotary compression element, the second decompression device, and the second decompression device for controlling the flow of the refrigerant into the second decompression device, or the second passage of the second decompression device for the refrigerant to flow. Flow control device, 313801. Ptc. Page 82 564289 Case No. 9Π23073 / October 孑 Amendment VI. Patent Application Scope When the first flow path control device discharges the refrigerant to the above defrosting flow path, the second flow path control device Then, the refrigerant is discharged to the second decompression device. 14. The defrosting device for the refrigerant flow path according to item 13 of the scope of patent application, in which CO ammonia is used as the refrigerant. 313801.ptc Page 83