JPH09256970A - Scroll compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely partition a high/low pressure space, by adhering a first stepped part in a high/low pressure separator peripheral surface to a vessel main unit internal peripheral surface by diametric direction contraction of a vessel main unit after welding. SOLUTION: In a high/low pressure separator 4 used in a scroll compressor, a first stepped part 4e notched over a peripheral total surface is provided. This separator 4 is fixed to a frame 3 through a spacer 17, a tip end face of the stepped part 4e of the separator 4 is made in adhesion to an internal peripheral surface of a main unit by diametric contraction of a vessel main unit 9a after welding a closed vessel, a high pressure space 30 in a delivery side and a low pressure space 31 in a suction side are partitioned, to be sealed. A diametric direction contraction amount of the main unit 9a after welding is increased in accordance with approaching a closed vessel welding part 9e, so as to rationalize a position of the stepped part 4e of the separator 4, its deformation by excessive adhesion is prevented, simultaneously, a clearance between the periphery of the separator 4 and the main unit 9a can be suitably ensured by the stepped part 4e.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scroll compressor used in, for example, an air conditioner and a refrigerator.

[0002]

2. Description of the Related Art FIG. 10 is a vertical sectional view of a conventional scroll compressor disclosed in Japanese Patent Laid-Open No. 63-80088. In FIG. 10, reference numeral 1 is a fixed scroll, and plate-shaped spiral teeth 1a are formed on one surface (lower side) of the fixed scroll. Further, on the surface (upper side) opposite to the plate-like spiral tooth 1a,
A hollow cylindrical convex portion is formed, and a groove for accommodating the sealing material 10A for partitioning the high pressure space and the low pressure space is formed on the outer peripheral surface of the convex portion. Reference numeral 2 denotes an orbiting scroll having plate-shaped spiral teeth 2a formed on one surface (upper side) thereof, and a boss portion 2b receiving a driving force from the main shaft 8 on the opposite side (lower side) thereof. It is projected. 3 is a frame, the outer periphery of which is fixed to the container body 9a,
The upper end surface is fixed to the high / low pressure separator 4. Further, the frame 3 supports the thrust load of the orbiting scroll 2 and also supports the main shaft 8 in the radial direction.
A leaf spring 12 is provided with a plurality of bolt holes. The leaf spring 12 is fixed to the upper end surface of the frame 3 by inserting bolts into two drill holes on the center side thereof. As a result, the fixed scroll 1 becomes the frame 3
On the other hand, although it is elastically coupled in the axial direction by the leaf spring 12 and is capable of minute displacement, it is basically fixedly coupled in the radial direction and the rotational direction about the axis. By the way, the leaf spring 12 is engaged with the end face of the fixed scroll 1 on the side opposite to the spiral. The high / low pressure separator 4 is welded all around the inner peripheral surface of the container body 9a without being positioned with respect to the frame 3. In addition, FIG.
Also, as shown in FIG. 12, the discharge space 17 and the intermediate pressure void portion 4a that guides the gas during compression are formed between the high and low pressure separator 4 and the base plate portion 1b of the fixed scroll 1. is there.

[0003]

In the conventional scroll compressor as shown in FIG. 10, a high and low pressure separator 4 for partitioning a discharge space (high pressure space) and a suction space (low pressure space).
Are kinematically welded to the container body 9a and the container lid 9b. For this reason, unless the high-low pressure separator 4, the container body 9a, and the container lid 9b are fitted with high precision without a gap, airtightness will be poor at the time of simultaneous welding. Therefore, high working precision is required for these fitting parts. .

The present invention has been made in order to solve the above-mentioned problems, and it is possible to partition a sealed portion in a sealed state of a certain level or more and to improve the assembling property. For the purpose of providing.

[0005]

In order to achieve the above-mentioned object, a scroll compressor according to the present invention comprises a tubular container body and a container opening, which is hermetically sealed together by welding. A container lid which constitutes the container, and a fixed scroll having plate-like spiral teeth arranged in the container body in a state in which the movement in the radial direction and the axial direction is restrained, and in the axial direction so as to be finely displaceable. , An orbiting scroll that has a plate-like spiral tooth and forms a compression chamber by combining the plate-like spiral teeth together with a fixed scroll, and a space inside the closed container that is provided in the container body that contracts after welding, and a low pressure on the suction side A high- and low-pressure separator for partitioning the space into a high-pressure space on the discharge side, and a frame that is fixed to the low-pressure side inner peripheral surface of the container body and slidably supports the orbiting scroll. In a compressor, a first stepped portion is provided on the outer peripheral surface of the high-low pressure separator, which is cut out over the entire circumference, and is provided between the inner peripheral surface of the container body that contracts after welding and the tip end surface of the first stepped portion. It is configured to partition the high pressure space and the low pressure space.

Further, in the above-mentioned precondition, the inner peripheral surface of the container body facing the high / low pressure separator is provided with a second step portion notched over the entire circumference, and the second step of the container body contracts after welding. The high pressure space and the low pressure space are partitioned between the tip surface of the step and the outer peripheral surface of the high and low pressure separator.

Further, in the above-mentioned precondition, a ring-shaped protrusion projecting inward in the radial direction is provided on the inner peripheral surface of the container body at a position facing the high-low pressure separator, and the container body shrinks after welding. The high pressure space and the low pressure space are partitioned between the tip end surface of the ring-shaped protrusion and the outer peripheral surface of the high and low pressure separator.

Further, in the above-described precondition, a peripheral groove portion is formed over the entire outer peripheral surface of the high-low pressure separator, and a first ring-shaped elastic member having a diameter protruding outward from the outer peripheral surface of the high-low pressure separator is formed. The high pressure space and the low pressure space are partitioned between the inner peripheral surface of the container body, which is installed in the groove and contracts after welding, and the outer peripheral surface of the first ring-shaped elastic member.

In addition, in the above-mentioned precondition, the high and low pressure separator has a second diameter of a diameter protruding outward from the outer peripheral surface.
The ring-shaped elastic member is fixed, and the high-pressure space and the low-pressure space are partitioned between the inner peripheral surface of the container body that contracts after welding and the outer peripheral surface of the second ring-shaped elastic member.

Further, in the above-mentioned precondition, a first high pressure chamber for sealingly sealing one surface of the high and low pressure separator is integrally provided in the container lid, and the high and low pressure separator and the first high pressure chamber are provided. The enclosed space is a high-pressure space.

Further, in the above-mentioned precondition, a second high pressure chamber which is constructed separately from the closed container and covers one side of the high and low pressure separator in a sealed manner is provided in the closed container, and the high and low pressure separator is provided. The space surrounded by the second high pressure chamber is a high pressure space.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. First Embodiment of the Invention FIG. 1 is a vertical sectional view showing a scroll compressor according to the first embodiment. In FIG. 1, 1
Is a fixed scroll, and plate-like spiral teeth 1a are formed on one surface (lower side) of the fixed scroll. Further, a fan-shaped protruding portion 1e is provided on the outer periphery 1c of the base plate portion 1b having a cylindrical shape with the center of the base plate portion symmetrical. The fan-shaped protruding portion 1e is provided with a bolt hole (not shown) concentrically with the base plate portion 1b, and the leaf spring 13 is fixed by the bolt 16. Further, the base plate portion 1b of the fixed scroll 1 is provided with a communication path 1d, so that the gas during compression (intermediate pressure)
Is guided to the intermediate pressure void portion 4a formed by the base plate portion 1b of the fixed scroll 1, the high / low pressure separator 4, and the first and second seal rings 10 and 11. Reference numeral 2 denotes an orbiting scroll, which has plate-like spiral teeth 2a formed on one surface (upper side) thereof, and is fitted with a main shaft 8 on the opposite side (lower side) to be driven from the main shaft 8. A boss portion 2b that receives a force is projected. The orbiting scroll 2 forms a compression chamber P by combining the fixed scroll 1 with the plate-like spiral teeth 1a and 2a. Reference numeral 3 denotes a frame, the outer peripheral portion of which is fixed to the inner peripheral surface of the closed container 9 on the low pressure side, and the upper end surface of which is bolted to the high / low pressure separator 4. Further, the frame 3 supports the thrust load of the orbiting scroll 2 and also supports the main shaft 8 in the radial direction. Reference numeral 17 denotes a spacer, which supports the fixed scroll 1 on the frame 3 via the leaf spring 13 and adjusts the axial dimension of the intermediate pressure gap portion 4a by contacting the high and low pressure separator 4. As the spacer 17, several types having different thicknesses are prepared in order to adjust the dimension in the axial direction. The spacer 17 may be fastened to the high / low pressure separator 4 with a screw or the like, or may be integrally formed with the high / low pressure separator 4. The high and low pressure separator 4 has a high pressure space 30 below.
The first seal ring 1 for separating the intermediate pressure space 4a from the
0, and ring grooves (not shown) for accommodating the second seal ring 11 for partitioning the low pressure space 31 and the intermediate pressure space 4a are formed. The first and second seal rings 10 and 11 and the ring groove form the first and second seal portions, respectively. An Oldham joint 7 restrains the rotation of the orbiting scroll 2 and determines the phase of the orbiting scroll 2 and the frame 3 in the rotational direction. 8 is a main shaft, and the orbiting scroll 2
The torque for driving the motor is supplied from the electric motor M. Reference numeral 9a is a cylindrical container body, and 9b is a container lid body that is sealed by welding to the upper surface cylindrical opening of the container body 9a to form a closed container 9 together with the container body 9a. The fixed scroll 1 is arranged in the container body 9a in a state in which the movement in the radial direction and the direction around the axis is restricted, and in a state in which it can be slightly displaced in the axial direction.

Next, the operation of the scroll compressor according to the first embodiment will be described. First, the closed container 9
The gas introduced therein is taken into the compression chamber P formed by the plate-shaped spiral teeth 1a and 2a of the fixed scroll 1 and the orbiting scroll 2, and is compressed by the reduction of the volume of the compression chamber due to the orbiting of the orbiting scroll 2. , Is discharged from the discharge port 1e. At the same time, in the course of this process, the gas in the process of being compressed is guided from the communication path 1d to the intermediate space 4a, and the fixed scroll 1 is pressed against the orbiting scroll 2. On the other hand, when liquid compression or the like occurs, the pressure in the compression chamber P formed by the plate-shaped spiral teeth 1a and 2a of the fixed scroll 1 and the orbiting scroll 2 becomes an abnormally high pressure, and the pressure in the intermediate space 4a is increased. Therefore, the force for pushing the fixed scroll 1 upward (force in the upward direction) by the pressure in the compression chamber P is higher than the force for pressing the fixed scroll 1 toward the orbiting scroll 2 (downward force), and the force is fixed. Push scroll 1 upwards. As a result, the pressure in the compression chamber P is released to the low pressure space 31 to prevent damage to the plate-shaped spiral teeth and the like.

In the scroll compressor constructed as described above, FIG. 2 shows a high / low pressure separator 4 and a container body 9.
The arrangement of a and the container lid 9b is shown. First step portion 4e notched on the entire outer peripheral surface of the high-low pressure separator 4
Is provided. Therefore, the high pressure space 30 and the low pressure space 31 are partitioned between the inner peripheral surface of the container body 9a that contracts after welding and the tip surface of the first step portion 4e. When assembling this scroll compressor, the high / low pressure separator 4 is fixed to the frame 3 via a spacer 17 with bolts (not shown), and the first step 4e of the high / low pressure separator 4 is a container after welding the closed container. Body 9a
The inner diameter of the container body 9a comes into close contact with the container body 9a due to the radial contraction, and the high pressure space 30 on the discharge side and the low pressure space 31 on the suction side are partitioned and sealed. Further, since the radial contraction amount of the container body 9a after welding is larger as it is closer to the closed container weld portion 9e, by optimizing the position of the first step portion 4e of the high / low pressure separator 4, Prevents deformation of the high / low pressure separator 4 due to excessive adhesion to the high / low pressure separator 4,
The intermediate void portion 4a and the first and second seal rings 10 and 11
The operation of can be secured. At the same time, the first step 4
Due to the presence of the notched portion e, an appropriate gap is secured between the outer periphery of the high / low pressure separator 4 and the container body 9a, whereby the assemblability of the high / low pressure separator 4 to the frame 3 can be improved.

Embodiment 2 of the Invention FIG. 3 shows the second embodiment.
FIG. 3 is a view showing the arrangement of a high / low pressure separator 4, a container body 9a, and a container lid 9b of the scroll compressor in FIG.
The general-purpose configuration of the scroll compressor in this embodiment is the same as that of the scroll compressor in the first embodiment shown in FIG. Here, in particular, the inner peripheral surface of the container body 9a facing the high / low pressure separator 4 is provided with a second stepped portion 9c which is notched over the entire circumference. The high / low pressure separator 4 is fixed to the frame 3 via a spacer 17 with a bolt (not shown). Then, due to the radial contraction of the container body 9a after welding the closed container, the tip surface of the second stepped portion 9c of the container body 9a is brought into close contact with the outer peripheral surface of the high-low pressure separator 4 to partition the high-pressure space 30 and the low-pressure space 31. And seal. In the second embodiment, since the amount of radial contraction of the container body 9a after welding is larger as it is closer to the closed container weld 9e, the height of the container body 9a can be increased by optimizing the position of the second step 9c. It is possible to prevent deformation of the high / low pressure separator 4 due to excessive close contact with the low pressure separator 4, and ensure the operation of the intermediate void portion 4a and the first and second seal rings 10, 11. At the same time, due to the presence of the notched portion of the second step portion 9c, an appropriate gap can be secured between the outer peripheral surface of the high / low pressure separator 4 and the container body 9a. The assemblability of can be improved. Further, since the second step portion 9c of the container body 9a is in close contact with the outer peripheral surface of the high / low pressure separator 4, even if there is longitudinal contraction (downward contraction) of the container body 9a after welding the closed container, Since the second step 9c slides on the outer peripheral surface of the high / low pressure separator 4, deformation of the high / low pressure separator 4 due to contraction in the vertical direction can be prevented.

Third Embodiment of the Invention FIG. 4 shows the third embodiment.
FIG. 3 is a view showing the arrangement of a high / low pressure separator 4, a container body 9a, and a container lid 9b of the scroll compressor in FIG.
The general-purpose configuration of the scroll compressor in this embodiment is the same as that of the scroll compressor in the first embodiment shown in FIG. Here, in particular, a ring upper protrusion 9d that protrudes radially inward is provided on the inner peripheral surface of the container body 9a at a position facing the high-low pressure separator 4 over the entire circumference. The high / low pressure separator 4 is fixed to the frame 3 via a spacer 17 with a bolt (not shown). Then, due to the radial contraction of the container body 9a after welding the closed container, the tip end surface of the ring upper protrusion 9d on the container body 9a side is brought into close contact with the outer peripheral surface of the high / low pressure separator 4, and the high pressure space 30 and the low pressure space 31 are separated from each other. Partition and seal. Embodiment 3
In the above, since the radial contraction amount of the container body 9a after welding is larger as it is closer to the closed container weld 9e, the ring-shaped protrusion 9
By appropriately setting the position of d, the deformation of the high / low pressure separator 4 due to the excessive adhesion of the container body 9a to the high / low pressure separator 4 is prevented, and the intermediate void portion 4a and the first and second seal rings 10, 11 are prevented. The operation can be secured.
At the same time, due to the presence of the notched portions above and below the ring-shaped protrusion 9d, the gap between the outer peripheral surface of the high / low pressure separator 4 and the container body 9a is appropriately secured, so that the high / low pressure separator 4 is assembled to the frame 3. It is possible to improve the sex. In addition, the ring-shaped protrusion 9d of the container body 9a having weak rigidity
Adheres to the outer peripheral surface of the high / low pressure separator 4, so that the container main body 9a shrinks vertically after welding (shrinks downward).
On the other hand, since the ring-shaped protrusion 9d slides on the outer peripheral surface of the high / low pressure separator 4, it is possible to prevent the high / low pressure separator 4 from being deformed due to the vertical contraction.

Fourth Embodiment of the Invention FIG. 5 shows the first embodiment.
FIG. 3 is a view showing the arrangement of a high / low pressure separator 4, a container body 9a, and a container lid 9b of the scroll compressor in FIG.
The general-purpose configuration of the scroll compressor in this embodiment is the same as that of the scroll compressor in the first embodiment shown in FIG. Here, in particular, the peripheral groove portion 20 a is formed on the outer peripheral surface of the high-low pressure separator 4 over the entire circumference. Further, the first ring-shaped elastic member 20 is formed to have a diameter that projects outward from the outer peripheral surface of the high / low pressure separator 4, and is mounted in the peripheral groove portion 20a. High and low pressure separator 4
Are fixed to the frame 3 via the spacers 17 with bolts (not shown). Then, due to the radial contraction of the container body 9a after welding the closed container, the inner peripheral surface of the container body 9a comes into close contact with the outer peripheral surface of the first ring-shaped elastic member 20,
The high pressure space 30 and the low pressure space 31 are partitioned and sealed.
In the fourth embodiment, since the first ring-shaped elastic member 20 is used, the excessive radial and vertical contraction of the container body 9a after welding causes the first ring-shaped elastic member 2 to shrink.
Since it is sufficiently absorbed by 0, the high and low pressure separator 4
Can be prevented, and the operation of the intermediate space 4a and the first and second seal rings 10 and 11 can be ensured. The same effect can be obtained when the ring-shaped elastic member is housed in the circumferential groove portion (not shown) provided on the container body 9a side and sealed with the outer peripheral surface of the high / low pressure separator 4.

Embodiment 5 of the Invention FIG. 6 shows the fifth embodiment.
FIG. 3 is a view showing the arrangement of a high / low pressure separator 4, a container body 9a, and a container lid 9b of the scroll compressor in FIG.
The general-purpose configuration of the scroll compressor in this embodiment is the same as that of the scroll compressor in the first embodiment shown in FIG. Here, in particular, the second ring-shaped elastic member 21
Is formed to have a diameter that protrudes outward from the outer peripheral surface of the high-low pressure separator 4, and is fixed to the outer peripheral upper surface of the high-low pressure separator 4. The high / low pressure separator 4 is fixed to the frame 3 via a spacer 17 with a bolt (not shown). Further, a second ring-shaped elastic member 21 formed in an annular shape is concentrically attached to the upper surface of the outer peripheral portion of the high / low pressure separator 4 by bolts 22, and the container body 9a is radially contracted after welding of the closed container, whereby the container body is contracted. The inner peripheral surface of 9a is the second ring-shaped elastic member 21.
The high pressure space 30 and the low pressure space 3 are brought into close contact with the outer peripheral surface of the
Partition 1 and seal. In the fifth embodiment, since the second ring-shaped elastic member 21 is used, the excessive radial and vertical contraction of the container body 9a after welding is sufficiently caused by the second ring-shaped elastic member 21. Since it is absorbed, it is possible to prevent the deformation of the high and low pressure separator 4 and ensure the operation of the intermediate void portion 4a and the first and second seal rings 10 and 11.

Sixth Embodiment of the Invention FIG. 7 shows the sixth embodiment.
FIG. 3 is a diagram showing a high / low pressure separator 4, a container body 9a, a container lid 9b, and a first high pressure chamber 9f integrated with the container lid 9b in the scroll compressor in FIG. The general structure of the scroll compressor in this embodiment is shown in FIG.
It is similar to the scroll compressor of the first embodiment shown in FIG. Here, in particular, a first high-pressure chamber 9f that covers one surface of the high-low pressure separator 4 in a sealed manner is provided integrally connected to the inner surface of the container lid 9b. The high / low pressure separator 4 is fixed to the frame 3 via a spacer 17 with a bolt (not shown). Further, a cylindrical portion 4f is formed so as to project upward on the upper portion of the high / low pressure separator 4, and the sealing material 23 housed in the cylindrical portion 4f and a circular groove portion (not shown) provided on the outer periphery thereof. And the first high-pressure chamber 9f form a high-pressure space 30. With this configuration, it is possible to improve the assemblability of the scroll compressor. Further, since the high pressure space 30 is formed by the space surrounded by the first high pressure chamber 9f and the high / low pressure separator 4, the low pressure space 31 and the high pressure space 30 can be partitioned. In particular, since the container body 9a and the high / low pressure separator 4 are not in direct contact with each other, even if the container body 9a contracts and deforms after welding, the high / low pressure separator 4 does not deform.

Seventh Embodiment of the Invention FIG. 8 shows the seventh embodiment.
High and low pressure separator 4, container body 9a, container lid 9b, second high pressure chamber 25 of the scroll compressor in FIG.
It is the figure which showed. The general-purpose configuration of the scroll compressor in this embodiment is the same as that of the scroll compressor in the first embodiment shown in FIG. Here, in particular, the second high-pressure chamber 25 is configured separately from the closed container 9 and is arranged in the closed container 9 so as to cover one surface of the high-low pressure separator 4 in a sealed manner. The high / low pressure separator 4 is fixed to the frame 3 with a bolt (not shown) via a spacer 17. In addition, the second high pressure chamber 25 is provided with a bolt 2 above the high and low pressure separator 4.
By being fixed by 6, the space surrounded by these is formed as a high-pressure space 30. Embodiment 7
According to the above, the transmission of vibration due to the high pressure gas flow can be insulated between the second high pressure chamber 25 and the closed container 9. Therefore, noise and vibration of the scroll compressor can be reduced. Further, since the high pressure space 30 is formed between the second high pressure chamber 25 and the high and low pressure separator 4, the low pressure space 31 and the high pressure space 30 can be partitioned by this. Further, since the container body 9a and the high / low pressure separator 4 are not in direct contact with each other, even if the container body 9a contracts and deforms after welding, the high / low pressure separator 4 does not deform.

Eighth Embodiment of the Invention FIG. 9 shows the eighth embodiment.
2 is a vertical sectional view showing a scroll compressor according to FIG. FIG.
In the figure, reference numeral 1 is a fixed scroll, and plate-like spiral teeth 1a are formed on the surface on one side (lower side) thereof. Reference numeral 2 denotes an orbiting scroll having plate-shaped spiral teeth 2a formed on one surface (upper side) thereof, and a boss portion 2b receiving a driving force from the main shaft 8 protruding on the opposite side (lower side) surface thereof. It is set up.
Reference numeral 3 denotes a frame, which is fixed to the container body 9a via an outer peripheral projection 3a protruding outwardly over the entire outer peripheral surface, and a high pressure space 30 is above the fixed portion and a low pressure space 31 is below. It is divided into Also, frame 3
Supports the thrust load of the orbiting scroll 2 and also supports the main shaft 8 in the radial direction. An Oldham joint 7 restrains the rotation of the orbiting scroll 2 and determines the phase of the orbiting scroll 2 and the frame 3 in the rotational direction. Reference numeral 8 denotes a main shaft, to which torque for driving the orbiting scroll 2 can be applied from the electric motor M.

Next, the operation of the scroll compressor according to the eighth embodiment will be described. First, the closed container 9
The gas introduced therein is taken into the compression chamber P formed by the plate-shaped spiral teeth 1a, 2a of the fixed scroll 1 and the orbiting scroll 2, and is compressed by the reduction of the volume of the compression chamber due to the orbiting of the orbiting scroll 2. , Is discharged from the discharge port 1e into the high-pressure space 30. Here, in assembling this scroll compressor, the outer peripheral projection 3a of the frame 3 is provided with the container main body 9 after welding the container lid 9b and the container main body 9a.
Due to the radial contraction of “a”, it is firmly attached and supported to the inner peripheral surface of the container body 9a. Further, since the radial contraction amount of the container body 9a after welding is larger as it is closer to the closed container weld 9e,
By optimizing the position of the outer peripheral protrusion 3a of the frame 3,
It is possible to prevent the frame 3 from being deformed due to excessive close contact with the container body 9a.

Needless to say, the fixing method of the frame 3 as shown in the eighth embodiment can be applied to any of the scroll compressors shown in the first to seventh embodiments.

[0024]

As described above, according to the invention of claim 1, the first step portion of the outer peripheral surface of the high-low pressure separator is brought into close contact with the inner peripheral surface of the container main body by the radial contraction of the container main body after welding. As a result, the high pressure space and the low pressure space can be reliably separated from each other. In addition, by changing the gap between the first step before welding and the inner peripheral surface of the container main body or the position of the first step on the outer peripheral surface of the high / low pressure separator, the tightening margin of the high / low pressure separator due to contraction of the container main body can be improved. It can be adjusted, and thus deformation of the high and low pressure separator due to excessive contraction of the container body can be prevented. In addition, it is possible to improve the assemblability of the high and low pressure separator to the frame.

According to the second aspect of the present invention, the high pressure space and the low pressure space are obtained by bringing the second step portion of the inner peripheral surface of the container body into close contact with the outer peripheral surface of the high and low pressure separator by the radial contraction of the container main body after welding. And can be reliably separated. On the other hand, with respect to the contraction of the container body in the vertical direction, the second step portion slides on the outer peripheral surface of the high and low pressure separator, and therefore the high and low pressure separator is prevented from being pulled by the vertical contraction of the container body and displaced. In addition, by changing the gap between the outer peripheral surface of the high and low pressure separator and the second step before welding and the position of the second step on the inner peripheral surface of the container body, the high and low pressure separator can be tightened due to contraction of the container body. It can be adjusted, and thus deformation of the high and low pressure separator due to excessive contraction of the container body can be prevented. In addition, it is possible to improve the assemblability of the high and low pressure separator to the frame.

According to the third aspect of the present invention, the ring-shaped projection on the inner peripheral surface of the container body is brought into close contact with the outer peripheral surface of the high / low pressure separator by the radial contraction of the container main body after welding,
The high pressure space and the low pressure space can be reliably separated. On the other hand, the rigidity of the ring-shaped protrusion is low with respect to the vertical contraction of the container body, and therefore when the vertical contraction occurs, the ring-shaped protrusion slides on the outer peripheral surface of the high-low pressure separator, so that the high-low pressure separator is It is not pulled by the vertical contraction of the and dislocated. Also, by adjusting the gap between the outer peripheral surface of the high and low pressure separator and the ring-shaped protrusion before welding and the position of the ring-shaped protrusion on the inner peripheral surface of the container body, the tightening margin of the high and low pressure separator due to contraction of the container body can be adjusted. Therefore, it is possible to prevent the high-low pressure separator from being deformed due to excessive contraction of the container body. In addition, it is possible to improve the assemblability of the high and low pressure separator to the frame.

According to the invention of claim 4, the first ring-shaped elastic member mounted in the peripheral groove portion of the outer peripheral surface of the high / low pressure separator is brought into close contact with the inner peripheral surface of the container main body by radial contraction of the container main body after welding. By doing so, the high-pressure space and the low-pressure space can be partitioned more reliably. Further, since the sealing is performed by the elastic member, the first ring-shaped elastic member can surely seal even if the gap between the high and low pressure separator and the container body is non-uniform and even if the container body contracts excessively after welding. Since it serves as a cushioning material, deformation of the high and low pressure separator can be prevented. In addition, it is possible to improve the assemblability of the high and low pressure separator to the frame.

According to the invention of claim 5, the second ring-shaped elastic member fixed to the high-low pressure separator is brought into close contact with the inner peripheral surface of the container body by radial contraction of the container body after welding, whereby the high-pressure space is formed. And the low-pressure space are more reliably partitioned. Further, since the elastic member seals, even if the container body is excessively contracted by welding, the elastic member serves as a cushioning material, so that the high-low pressure separator can be prevented from being deformed. In addition, it is possible to improve the assemblability of the high and low pressure separator to the frame.

According to the invention of claim 6, the container lid and the first
Since it is integrally formed with the high-pressure chamber, the assemblability of the scroll compressor can be improved. Also, the first
Since the high-pressure space is formed between the high-pressure chamber and the high-low pressure separator, it is possible to partition the low-pressure space and the high-pressure space. Since the container body and the high / low pressure separator are not in direct contact with each other, the high / low pressure separator will not be deformed even if the container body contracts and deforms after welding.

According to the invention of claim 7, the closed container and the second
Since the high pressure chamber and the high pressure chamber are independently configured, vibration transmission due to the high pressure gas flow can be insulated between the second high pressure chamber and the closed container. Therefore, noise and vibration of the scroll compressor can be reduced. Further, since the high pressure space is formed between the second high pressure chamber and the high and low pressure separator, the low pressure space and the high pressure space can be partitioned by this. Since the container body and the high / low pressure separator are not in direct contact with each other, the high / low pressure separator does not deform even if the container body contracts and deforms after welding.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a main part of a scroll compressor according to a first embodiment of the present invention.

FIG. 2 is a partial cross-sectional view showing a close contact state between the high and low pressure separator and the close contact container according to the first embodiment of the present invention.

FIG. 3 is a partial cross-sectional view showing a close contact state between a high / low pressure separator and a close contact container according to Embodiment 2 of the present invention.

FIG. 4 is a partial cross-sectional view showing a close contact state between a high / low pressure separator and a close contact container according to a third embodiment of the present invention.

FIG. 5 is a partial cross-sectional view showing a close contact state between a high / low pressure separator and a close contact container according to a fourth embodiment of the present invention.

FIG. 6 is a partial sectional view showing a close contact state between a high / low pressure separator and a close contact container according to a fifth embodiment of the present invention.

FIG. 7 is a partial cross-sectional view showing a state in which a high-pressure space is formed by a high-low pressure separator and a high-pressure chamber according to Embodiment 6 of the present invention.

FIG. 8 is a partial cross-sectional view showing a state in which a high-pressure space is formed by a high-low pressure separator and a high-pressure chamber according to Embodiment 7 of the present invention.

FIG. 9 is a vertical cross-sectional view showing the main parts of a scroll compressor according to an eighth embodiment of the present invention.

FIG. 10 is a vertical sectional view showing a conventional scroll compressor.

FIG. 11 is a partial cross-sectional view showing a main part of a conventional scroll compressor.

FIG. 12 is a partial cross-sectional view showing a main part of a conventional scroll compressor.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Fixed scroll, 1a Plate-shaped spiral tooth, 2 Oscillating scroll, 2a Plate-shaped spiral tooth, 3 frame, 4 High / low pressure separator, 4e 1st step part, 9 Sealed container, 9a
Container body, 9b container lid, 9c second step, 9d
Ring-shaped projection, 9e Sealed container weld, 9f First high-pressure chamber, 20 First ring-shaped elastic member, 20
a circumferential groove portion, 21 second ring-shaped elastic member, 22 bolt, 25 second high pressure chamber, 30 high pressure space, 3
1 Low pressure space, P compression chamber.

Front Page Continuation (72) Inventor Shoichiro Hara 2-3-3 Marunouchi, Chiyoda-ku, Tokyo Sanryo Electric Co., Ltd. (72) Inventor Norihiko Toyota 2-3-3 Marunouchi, Chiyoda-ku, Tokyo Sanryo Electric Co., Ltd. In the company

Claims (7)

[Claims] 1. A tubular container main body, a container lid body that is sealed by welding at a cylindrical opening of the container main body to form a closed container together with the container main body, and a radial direction and an axial direction in the container main body. The fixed scroll having plate-like spiral teeth arranged in a state in which the movement of the plate is restrained and capable of being slightly displaced in the axial direction, and the plate-like spiral teeth having the plate-like spiral teeth and the plate-like spiral teeth of each other. An oscillating scroll that forms a compression chamber in combination, a high-low pressure separator that partitions the space in the closed container provided in the container body that contracts after welding into a low-pressure space on the suction side and a high-pressure space on the discharge side,
In a scroll compressor having a frame which is fixed to the inner peripheral surface of the container body on the low pressure side and slidably supports the orbiting scroll, the outer peripheral surface of the high and low pressure separator is notched over the entire circumference. 1. A scroll compressor characterized in that the high pressure space and the low pressure space are partitioned between the inner peripheral surface of the container body that contracts after welding and the tip end surface of the first step portion. . 2. A tubular container main body, a container lid which is sealed by welding at a cylindrical opening of the container main body to form a closed container together with the container main body, and a radial direction and an axial direction in the container main body. The fixed scroll having plate-like spiral teeth arranged in a state in which the movement of the plate is restrained and capable of being slightly displaced in the axial direction, and the plate-like spiral teeth having the plate-like spiral teeth and the plate-like spiral teeth of each other. An oscillating scroll that forms a compression chamber in combination, a high-low pressure separator that partitions the space in the closed container provided in the container body that contracts after welding into a low-pressure space on the suction side and a high-pressure space on the discharge side,
In a scroll compressor provided with a frame for slidably supporting the orbiting scroll fixed to an inner peripheral surface of the container main body on a low pressure side, an inner peripheral surface of the container main body at a position facing the high-low pressure separator. The surface is provided with a notched second step portion, and the high pressure space and the high pressure space are provided between the tip surface of the second step portion of the container body that contracts after welding and the outer peripheral surface of the high and low pressure separator. A scroll compressor characterized by partitioning from a low-pressure space. 3. A cylindrical container body, a container lid body that is sealed by welding at a cylindrical opening of the container body to form a closed container together with the container body, and a radial direction and an axial direction in the container body. The fixed scroll having plate-like spiral teeth arranged in a state in which the movement of the plate is restrained and capable of being slightly displaced in the axial direction, and the plate-like spiral teeth having the plate-like spiral teeth and the plate-like spiral teeth of each other. An oscillating scroll that forms a compression chamber in combination, a high-low pressure separator that partitions the space in the closed container provided in the container body that contracts after welding into a low-pressure space on the suction side and a high-pressure space on the discharge side,
In a scroll compressor provided with a frame for slidably supporting the orbiting scroll fixed to an inner peripheral surface of the container main body on a low pressure side, an inner peripheral surface of the container main body at a position facing the high-low pressure separator. On the surface, a ring-shaped protrusion projecting inward in the radial direction is provided over the entire circumference, and the high-pressure space is provided between the tip surface of the ring-shaped protrusion of the container body that contracts after welding and the outer peripheral surface of the high-low pressure separator. A scroll compressor, characterized in that it separates from the low-pressure space. 4. A cylindrical container main body, a container lid body that is sealed by welding at a cylindrical opening of the container main body to form a closed container together with the container main body, and a radial direction and an axial direction in the container main body. The fixed scroll having plate-like spiral teeth arranged in a state in which the movement of the plate is restrained and capable of being slightly displaced in the axial direction, and the plate-like spiral teeth having the plate-like spiral teeth and the plate-like spiral teeth of each other. An oscillating scroll that forms a compression chamber in combination, a high-low pressure separator that partitions the space in the closed container provided in the container body that contracts after welding into a low-pressure space on the suction side and a high-pressure space on the discharge side,
In a scroll compressor having a frame fixed to an inner peripheral surface on the low pressure side of the container body and slidably supporting the orbiting scroll, a peripheral groove portion is formed on the outer peripheral surface of the high and low pressure separator over the entire circumference. Then, a first ring-shaped elastic member having a diameter protruding outward from the outer peripheral surface of the high-low pressure separator is attached to the peripheral groove portion, and the inner peripheral surface of the container body contracts after welding and the first ring-shaped elastic member. A scroll compressor characterized by partitioning the high-pressure space and the low-pressure space from the outer peripheral surface of an elastic member. 5. A tubular container body, a container lid body that is sealed by welding at a cylindrical opening of the container body to form a closed container together with the container body, and a radial direction and an axial direction in the container body. The fixed scroll having plate-like spiral teeth arranged in a state in which the movement of the plate is restrained and capable of being slightly displaced in the axial direction, and the plate-like spiral teeth having the plate-like spiral teeth and the plate-like spiral teeth of each other. An oscillating scroll that forms a compression chamber in combination, a high-low pressure separator that partitions the space in the closed container provided in the container body that contracts after welding into a low-pressure space on the suction side and a high-pressure space on the discharge side,
In a scroll compressor having a frame fixed to the inner peripheral surface of the container body on the low pressure side and slidably supporting the orbiting scroll, a diameter protruding outward from the outer peripheral surface of the high and low pressure separator. The second ring-shaped elastic member is fixed, and the high-pressure space and the low-pressure space are partitioned between the inner peripheral surface of the container body that contracts after welding and the outer peripheral surface of the second ring-shaped elastic member. A scroll compressor characterized in that 6. A cylindrical container main body, a container lid body that is sealed by welding at the cylindrical opening of the container main body to form a closed container together with the container main body, and a radial direction and an axial direction in the container main body. The fixed scroll having plate-like spiral teeth arranged in a state in which the movement of the plate is restrained and capable of being slightly displaced in the axial direction, and the plate-like spiral teeth having the plate-like spiral teeth and the plate-like spiral teeth of each other. An oscillating scroll that forms a compression chamber in combination, a high-low pressure separator that partitions the space in the closed container provided in the container body that contracts after welding into a low-pressure space on the suction side and a high-pressure space on the discharge side,
A scroll compressor having a frame fixed to an inner peripheral surface of a low pressure side of the container body and slidably supporting the orbiting scroll, wherein a first surface of the high and low pressure separator is hermetically covered. A scroll compressor, wherein a high-pressure chamber is integrally provided in the container lid, and a space surrounded by the high-low pressure separator and the first high-pressure chamber is the high-pressure space. 7. A container body having a cylindrical shape, a container lid body that is sealed by welding at a cylinder opening of the container body to form a closed container together with the container body, and a radial direction and an axial direction in the container body. The fixed scroll having plate-like spiral teeth arranged in a state in which the movement of the plate is restrained and capable of being slightly displaced in the axial direction, and the plate-like spiral teeth having the plate-like spiral teeth and the plate-like spiral teeth of each other. An oscillating scroll that forms a compression chamber in combination, a high-low pressure separator that partitions the space in the closed container provided in the container body that contracts after welding into a low-pressure space on the suction side and a high-pressure space on the discharge side,
In a scroll compressor, which is fixed to the inner peripheral surface on the low-pressure side of the container body and includes a frame that slidably supports the orbiting scroll, the scroll compressor is configured separately from the closed container, and A second high-pressure chamber that covers one side of the low-pressure separator in a sealed manner is provided in the closed container, and a space surrounded by the high-low pressure separator and the second high-pressure chamber is used as the high-pressure space. And scroll compressor.