JPH07174085A - Cooling structure for scroll compressor - Google Patents

Abstract

PURPOSE:To provide a compressor having the high cooling effect and the sealing effect at an arbitrary place in a compression chamber. CONSTITUTION:As for a scroll compressor which is constituted so that a compression chamber 10 is formed between a fixed scroll member 1 and a movable scroll member 8, and compression action is performed by the shift of the compression chamber 10 to the center side from the outer peripheral sides of the scroll parts 1b and 8b of both the scroll members 1 and 8 by the revolution movement of the movable scroll member 8, a cooling groove 13 is formed along the scroll-shaped end surface of the scroll part 1b of the fixed scroll member 1, and cooling liquid is supplied to the cooling groove 13 through a passage 14 formed on the fixed scroll member 1. The cooling liquid is spread on the whole region of the cooling groove 13 from the opened port part to the cooling groove 13 of the passage 14, and leaks into the compressor 10 from an arbitrary place of the cooling groove 13 and is uniformly dispersed to the whole region of the compression chamber 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling structure for a scroll compressor for cooling a working gas or the like by injecting a cooling liquid into a compression chamber.

[0002]

2. Description of the Related Art Conventionally, as a structure for cooling a working gas of a scroll compressor and a compressor main body, there has been disclosed in Japanese Utility Model Publication 1-58.
As shown in Japanese Patent Publication No. 790, there is known a type in which a radiation fin is formed on the back surface of a substrate of a fixed scroll member and a movable scroll member, and cooling air is forcedly introduced into the radiation fin. However, the method of introducing cooling air to the radiation fins has a limit in the amount of heat radiation, and the amount of heat radiation is insufficient and the fixed scroll member and the movable scroll member are seized up, or the working gas expands with a large amount of power to exert a compression action. There was a problem such as requiring.
Further, when the heat radiation fins are provided on the back surface of the fixed and movable scroll members, there is a problem that the compressor becomes large.

For this reason, there has been proposed a type in which the working gas or the like of the scroll compressor is cooled by directly injecting the cooling liquid into the compression chamber of the scroll compressor so that the cooling liquid absorbs heat. For example, in Japanese Unexamined Patent Publication No. 4-43882, a cooling liquid is injected into a compression chamber through one or a plurality of water injection holes provided in a fixed scroll member, and the temperature of a compressed surface of a movable scroll member and a working gas is increased by the cooling liquid. The type is shown in which the

[0004]

However, when the cooling liquid is injected into the compression chamber through one or a plurality of water injection ports, the cooling liquid is unevenly distributed in the compression chamber, so that the compression chamber is uniformly cooled. However, there is a risk that the above-mentioned problems partially occur. The present invention has been made in view of the problems existing in the above-mentioned prior art, and an object thereof is to provide a compressor having a high cooling effect everywhere in the compression chamber.

[0005]

In order to achieve the above-mentioned object, the present invention is configured as follows. That is, a fixed scroll member having a spiral portion projecting from the substrate and a movable scroll member having a spiral portion projecting from the substrate are similarly provided, and the compression chamber formed between the scroll members is defined by the movable scroll member. In a scroll compressor that performs a compression action by moving from the outer peripheral side to the center side of the spiral portion by the orbital movement of the spiral scroll groove, a spiral cooling groove is formed along the axial end surface of the spiral portion of the fixed scroll member. The cooling liquid is supplied to the cooling groove through a passage provided in the fixed scroll member.

At this time, it is effective that the cooling groove is formed only on the outer peripheral side of the spiral portion of the fixed scroll member, and a receiving groove for the tip seal is formed on the center side of the spiral portion. Further, at this time, it is effective that the cooling liquid is supplied to the accommodation groove of the tip seal formed along the axial end surface of the spiral portion of the fixed scroll member, and the accommodation groove is also used as the cooling groove. .

[0007]

According to the above construction, the cooling liquid is guided from the cooling liquid supply source to the cooling groove on the end face of the spiral portion of the fixed scroll member through the passage provided in the fixed scroll member. This cooling liquid spreads from the opening of the passage to the cooling groove to the entire cooling groove, and is also sprayed from the gap between the end surface of the scroll portion of the fixed scroll member and the movable scroll member substrate to the entire compression chamber formed between the scroll members. It Therefore, the cooling liquid uniformly spreads in the working gas in the compression chamber, and in the state of the liquid, heat is taken from the surroundings to raise the temperature, so that the temperature of the working gas and the fixed and movable scroll members rise everywhere in the compression chamber. Suppress.

Further, since the cooling liquid is evenly dispersed in the compression chamber, the cooling liquid intervenes everywhere between the fixed scroll member and the movable scroll member forming the compression chamber, and the working gas in the compression chamber is generated. Reduce compression leakage.
In particular, since the cooling liquid flows out from the end face of the spiral portion of the fixed scroll member into the compression chamber, the cooling liquid intervenes more in the contact portion between the end face of the spiral portion of the fixed scroll member and the base plate of the movable scroll member. It suppresses the compression leak of working gas more strongly.

When the cooling groove is formed only on the outer peripheral side of the scroll portion of the fixed scroll member and the receiving groove for the tip seal is formed on the center side, the compression leakage of the working gas in the compression chamber on the center side of the spiral is further suppressed. To be done. Further, at the beginning of the compression stroke, the cooling liquid is evenly dispersed in the working gas in the compression chamber, and the cooling liquid suppresses the temperature rise in the compression chamber as the compression stroke progresses. In this case, since the outer peripheral side of the spiral portion has a lower pressure than the central side of the spiral portion, the cooling liquid is relatively easily supplied to the cooling groove provided on the outer peripheral side of the spiral portion.

When the receiving groove of the tip seal is also used as the cooling groove, since the tip seal is accommodated over the entire end surface of the scroll portion of the fixed scroll member, the compression leakage of the working gas in all the compression chambers is prevented. Both the seal and the cooling liquid are reduced, and the sealability of the compression chamber is increased.

[0011]

The first embodiment of the present invention will be described below.
A description will be given based on FIGS. FIG. 1 shows a vertical cross section of the entire scroll compressor, and FIG. 2 shows a horizontal cross section of an engaging portion of both scroll members. Further, air is assumed as the working gas of the scroll compressor in this embodiment.

As shown in FIG. 1, a front housing 2 and a rear housing 3 are joined and fixed to both front and rear end surfaces of a fixed scroll member 1 which also serves as a center housing. The rotary shaft 4 has a bearing 5 in the front housing 2.
Is rotatably supported by the eccentric shaft 6. A bush 7 is rotatably supported on the eccentric shaft 6. On the outer peripheral surface of the bush 7, a cylindrical boss portion 8c integrally formed at the center of the rear surface of the base plate 8a of the movable scroll member 8 is relatively rotatably fitted via a bearing 9.

The movable scroll member 8 revolves through the bush 7 without rotating about its own axis as the eccentric shaft 6 rotates and revolves as the rotating shaft 4 rotates. Movable scroll member 8
Since various known mechanisms are known for the mechanism for preventing the rotation of the vehicle and only performing the revolution, detailed description thereof will be omitted. As shown in FIG. 2, the fixed scroll member 1 is formed by continuously projecting a casing 1d and a spiral portion 1b on a substrate 1a. On the other hand, the movable scroll member 8 is formed by protruding the spiral portion 8b on the substrate 8a. The fixed scroll member 1 and the movable scroll member 8 are meshed with each other in both spiral portions 1b and 8b,
Further, the spiral parts 1b and 8b are arranged so as to contact each other, and the axial end faces of the spiral parts 1b and 8b come into contact with the substrates 1a and 8a of the other scroll member. Then, as shown in FIGS. 1 and 2, the compression chamber 10 is formed by the substrates 1a and 8a and the spiral portions 1b and 8b of the scroll members 1 and 8.

As shown in FIG. 1, a receiving groove 21 is formed on the axial end surface of the spiral portion 8b of the movable scroll member 8 along the spiral shape, and the receiving groove 21 is formed in the receiving groove 21. A tip seal 22 having a spiral shape similar to that of the above is accommodated. Further, on the axial end surface of the spiral portion 1b of the fixed scroll member 1, as shown in FIG. 2, a housing groove 11 having a length corresponding to one spiral is formed on the center side along the spiral shape. A tip seal 12 having a spiral shape similar to that of the accommodation groove 11 is accommodated in the accommodation groove 11. Further, on the outer peripheral side of the axial end surface of the spiral portion 1b, a cooling groove 13 having a length corresponding to one spiral is formed along the spiral shape.

That is, the tip seal 22 is accommodated in the end surface of the scroll portion 8b of the movable scroll member 8 over the entire area of the scroll, while the scroll portion 1 of the fixed scroll member 1 is accommodated.
At the end face b, the tip seal 12
Is accommodated, and a cooling groove 13 is formed on the outer peripheral side where the chip seal 12 is not accommodated. As shown in FIGS. 1 and 2, a passage 1 that connects the cooling groove 13 and the outside of the compressor.
4 extends through the fixed scroll member 1, and the passage 14 is opened in the cooling groove 13 at a position near the center of the spiral. At the opening end of the passage 14 to the outside of the compressor,
The other end of the conduit 15 whose one end is connected to a water source via a pump is connected. Therefore, the cooling water as the cooling liquid can be supplied to the cooling groove 13 from the water source through the pipe line 15 and the passage 14. In addition, 16 in FIG. 1 is a blind lid.

A suction chamber 17 is formed on the outer peripheral side of the spiral portions 1b and 8b, and air as a working gas is sucked into the suction chamber 17. A discharge hole 1c is formed at the center of the base plate 1a of the fixed scroll member 1 so that the compression chamber 10 and the discharge chamber 18 formed in the rear housing 3 can communicate with each other. The discharge chamber 18 communicates with an external discharge conduit (not shown). Reference numeral 19 is a discharge valve, and 20 is a retainer that regulates the open position of the discharge valve.

Next, the operation of the scroll compressor constructed as described above will be described. When this scroll compressor is operated, the movable scroll member 8 revolves around the rotating shaft 4 along with the revolution of the eccentric shaft 6. Then, along with this, the refrigerant gas in the suction chamber 17 is transferred to both scroll members 1,
It is taken into the compression chamber 10 between 8. In FIG. 2, the compression chamber 10 has a spiral portion 1b along with the revolution of the movable scroll member 8.
Is moved from the outer peripheral side to the central side, and the compression action is performed while the volume is reduced. The air compressed by the reduction of the volume of the compression chamber 10 is discharged into the discharge hole 1 of the substrate 1a shown in FIGS.
The discharge valve 19 is pushed away from c and discharged into the discharge chamber 18.

During operation of the compressor, the pressure in the compression chamber 10 acts on the gap between the bottom surface of the housing groove 11 provided in the fixed scroll member 1 and the tip seal 12. Therefore, the tip seal 12 receives a back pressure from the air in the compression chamber 10 and comes into close contact with the substrate 8a of the movable scroll member 8 to provide a seal between the end face of the spiral portion 1b and the substrate 8a of the movable scroll member 8. Secure. Further, since the pressure in the compression chamber 10 also acts on the gap between the bottom surface of the housing groove 21 provided in the movable scroll member 8 and the tip seal 22, the end face of the spiral portion 8b and the fixed scroll member 1 are similarly processed. Substrate 1a
A seal between is secured. For this reason, the high-pressure compression chamber 10 located closest to the center of the scroll has both the scroll portions 1 of the movable and fixed scroll members 1 and 8 forming the compression chamber 10.
Since the b and 8b always have the tip seals 12 and 22 on the end faces, the low pressure compression chamber 1 located on the outer peripheral side of the spiral.
Sealed more strongly than 0.

Further, during the operation of the compressor, the cooling water supplied from the water source and pumped in the pipe 15 and the passage 14 by the pump is introduced into the cooling groove 13 at a position near the center of the spiral. As is clear from the above configuration,
Since the spiral portions 1b and 8b form the compression chamber 10 closer to the end of the compression stroke, the portions closer to the center side form the spiral portion 1b.
The pressure at the end faces of b and 8b is also higher in the portion closer to the center side. Therefore, the cooling water introduced into the cooling groove 13 at a position close to the center of the spiral of relatively high pressure flows in the cooling groove 13 along the spiral shape toward the outer peripheral side of the spiral of relatively low pressure. Along with that, the cooling water is cooled in the cooling groove 13.
Leaks into the compression chamber 10 through the gap between the spiral portion 1b and the substrate 8a everywhere. Since the cooling groove 13 is formed on the outer peripheral side of the spiral portion 1b, the cooling water is evenly dispersed in the compression chamber 10 at the beginning of the compression stroke.

During operation of the scroll compressor, the closer the compression chamber 10 formed between the scroll members 1 and 8 is to the center of the spiral, the higher the temperature due to the compression heat of the working air inside. It is rising. The cooling water evenly dispersed in the compression chamber 10 in the initial stage of the compression stroke takes up the compression heat of the working air in the compression chamber 10 as the compression stroke progresses and rises in temperature, and further vaporizes the compression heat of the working air. By taking away as heat and evaporating, the working air and thus the fixed and movable scroll members 1, and
The temperature rise of No. 8 is suppressed.

Further, the compression chamber 10 is formed by the base plates 1a, 8a and the spiral portions 1b, 8b of the fixed and movable scroll members 1, 8, and the cooling water uniformly dispersed in the compression chamber 10 is the fixed scroll member. 1 and the movable scroll member 8 intervene everywhere. Particularly, the cooling water flows from the end surface of the spiral portion 1b of the fixed scroll member 1 to the compression chamber 10
The spiral portion 1b of the fixed scroll member 1 leaks inward.
More cooling water is present in the contact portion between the end surface and the substrate 8a of the movable scroll member 8. Therefore, the compression chamber 10
The compressed leakage of working air from the inside is reduced.

In this embodiment, since the cooling water is evenly dispersed in the working air during the compression stroke, the heat of compression of the working air is absorbed everywhere in the compression chamber. For this reason,
The seizure is prevented over the entire area of the fixed and movable scroll members 1 and 8, and further, the expansion of the working air due to the high temperature is suppressed in various places of the compression chamber 10, so that the power required for performing the compression action is provided. It can be reduced.

Further, in this embodiment, since the cooling water is evenly dispersed in the compression chamber 10, a sealing effect is provided over the entire area of the compression chamber 10, and the fixed scroll in which the cooling liquid leaks out. Since the contact portion between the end surface of the spiral portion 1b of the member 1 and the substrate 8a of the movable scroll member 8 is strongly sealed, the compression leakage of the working air in the compression chamber 10 is reduced, and the compression efficiency of the compressor is improved. In particular, since the compression chamber 10 located on the most center side of the spiral is always sealed at both ends by the tip seals 12 and 22, the sealing effect is remarkable. Furthermore, the heat of recompression generated by recompressing the working air leaked from the compression chamber 10 can be reduced, and the heating of the compressor can be suppressed.

Further, in this embodiment, the cooling groove 13
Is provided on the outer peripheral side of the end face of the spiral portion 1b, the pressure in the cooling groove 13 is lower than that in the case where the cooling groove is provided on the center side of the end face of the spiral portion 1b. It is possible to pump the cooling liquid at an extremely low pressure. In this embodiment, the cooling groove 13 is the spiral portion 1b of the fixed scroll member 1.
Since only one spiral is provided on the outer peripheral side of the end face, it is possible to accommodate the tip seal for one spiral on the center side of the end face of the spiral portion 1b. If the tip seal for at least one turn of the spiral is housed in the center of the spiral, at least both ends of the compression chamber 10 located at the most center side of the spiral can be sealed by the both tip seals 12 and 22, so that the compression efficiency of the compressor is improved. Can be increased. Cooling groove 13
Is not necessarily limited to one spiral circumference on the outer peripheral side of the spiral, and the length of the cooling groove 13 may be further shortened to make the length of the tip seal 12 longer than one spiral circumference.

In this embodiment, the water source for the cooling water may be any water source such as a water pipe or a tank in which the water is stored. If the water source has means for pumping the cooling water to the compressor side, In particular, it is not necessary to connect a pump in the middle of the conduit 15. Further, in this embodiment, it is not always necessary to use cooling water to cool the working air, and any cooling that does not cause a chemical reaction with the working air and can be dispersed in the working air in terms of specific gravity is also possible. A liquid may be used. However, the type of cooling liquid may be limited depending on the use of the working air after compression.

Further, in this embodiment, the opening position of the passage 14 to the cooling groove 13 does not have to be near the center of the spiral, for example, it may be provided near the outer circumference of the spiral. In this case, since it is necessary to flow the cooling liquid introduced into the cooling groove 13 near the outer periphery of the relatively low-pressure spiral, toward the center of the relatively high-pressure spiral, the cooling liquid is cooled at a higher pressure than in the above-described embodiment. It is necessary to pump into the groove 13.

In this embodiment, if the working air after compression needs to be dry depending on the application, an air dryer may be installed on the discharge side of the compressor. Next, a second embodiment of the present invention will be described with reference to FIGS. In this embodiment, as shown in FIG. 3, the tip seal accommodating groove 25 is formed over the entire axial end surface of the spiral portion 1b of the fixed scroll member 1, and the tip seal 2
6 are accommodated.

The length of the tip seal 26 is bisected by the alternate long and short dash line L shown in FIG. 3, and one round of the spiral on the spiral center side from the alternate long and short dash line L is divided into the tip seal 26a,
Assuming that the tip seal 26b is a portion of the spiral on the outer circumferential side of the spiral from the one-dot chain line L, the tip seal 26a on the central side of the spiral is formed in a conventional rectangular cross section.
As shown in FIG. 4, the tip seal 26b on the outer peripheral side of the spiral is formed in a cross-sectional shape having a recess 27 on the surface facing the bottom surface of the housing groove 25. All other configurations are first
Similar to the embodiment, except that the passage 14 formed in the fixed scroll member 1 is provided on the bottom surface of the accommodating groove 25 slightly on the outer circumference side of the spiral line in FIG. It is opened as shown in.

When the scroll compressor constructed as described above is operated, the accommodation groove 2 is formed over the entire end faces of the spiral portions 1b and 8b of the fixed and movable scroll members 1 and 8.
In the gap between the bottom surface of 5, 21 and the tip seal 26, 22,
The pressure in the compression chamber 10 acts. Therefore, the tip seals 26 and 22 receive a back pressure due to the air in the compression chambers 10 and come into close contact with the substrate 8a of the movable scroll member 8 and the substrate 1a of the fixed scroll member 1, respectively, and all the compression chambers 1
At 0, secure the seals at the front and rear ends.

Further, when the compressor is in operation, cooling water is pumped through the passage 14 provided in the fixed scroll member 1 as in the first embodiment. This cooling water is introduced to a position closer to the center of the spiral in the accommodation groove 25 in which the tip seal 26b is accommodated, and is directed toward the spiral outer peripheral side in the passage defined by the bottom surface of the accommodation groove 25 and the recess 27 of the tip seal 26b. While flowing through the storage groove 25, it leaks into the compression chamber 10 everywhere on the storage groove 25 through the gap between the storage groove 25 and the tip seal 26b and the gap between the spiral portion 1b and the substrate 8a. Therefore, as in the first embodiment, the cooling water is evenly dispersed in the compression chamber 10 at the beginning of the compression stroke.

In this embodiment, as in the first embodiment, the compression heat of the working air is absorbed everywhere in the compression chamber 10, so that seizure of the fixed and movable scroll members 1 and 8 is prevented and at the same time. Since the expansion of the working air is suppressed, the power required for compression is reduced. Further, in this embodiment, since the cooling water is evenly dispersed in the compression chamber 10, a sealing effect is provided over the entire region of the compression chamber 10, and the spiral portions 1b of the fixed and movable scrolls 1, 8 are Since the tip seals 26 and 22 are housed in the entire area of the end face of 8b, all the compression chambers 10 are sealed at both front and rear ends by the tip seals 26 and 22. Therefore, the sealing effect of the compression chamber 10 is higher than that of the first embodiment, the compression leakage of the working air in the compression chamber 10 is further reduced, and the compression efficiency of the compressor is improved.

In this embodiment, the tip seal 26a and the tip seal 26b may be two separate tip seals or one continuous tip seal.
Further, in this embodiment, the cross-sectional shape of the concave portion 27 in the tip seal 26b is not limited to the rectangular shape as shown in FIG. 4, but may be any shape as long as it can serve as a passage for the cooling water. Absent.

The present invention is not limited to the construction of the above-described embodiment, and the construction of each part can be arbitrarily modified and embodied without departing from the spirit of the present invention. For example, the following modifications can be implemented. 1) An accommodation groove for the tip seal is formed over the entire axial end surface of the spiral portion of the fixed scroll member, and a cooling groove is also formed in parallel with the accommodation groove.

2) Compressor, condenser 31, receiver 32, expansion valve 3 as shown in FIG.
3. In the refrigeration cycle for air conditioning having the evaporator 34, the liquid refrigerant stored in the receiver 32 is transferred to the pipe line 35.
The pressure is fed to the compressor by the pressure feeding means 36. In the compressor, the liquid refrigerant is evenly dispersed as a cooling liquid in the compression chamber with the same configuration as that of the above-described embodiment.

3) In a compressor in which lubricating oil is contained in the working gas, a lubricating oil storage space 41 is installed in the compressor, as shown in FIG. Lubricating oil is pumped from the storage space 41 to the compressor via the pipe line 42 and the cooler. The lubricating oil is evenly dispersed as a cooling liquid in the compression chamber by the same configuration as that of the above-described embodiment.

[0036]

As described above in detail, according to the present invention,
Since the cooling liquid is evenly dispersed in the working gas during the compression stroke and the compression heat is efficiently absorbed by the cooling liquid, the risk of seizure of the fixed and movable scroll members in various places in the compression chamber is avoided and It has an excellent effect that the compression action can be performed with a relatively small power.

Further, by uniformly distributing the liquid in the compression chamber, a sealing effect is provided over the entire contact portion between the fixed scroll member and the movable scroll member in the compression chamber, and in particular, the spiral of the fixed scroll member is swirled. The contact portion between the end face and the substrate of the movable scroll member is strongly sealed. Therefore, the compression leakage of the working gas in the compression chamber is reduced, the compression efficiency of the compressor is improved, and the heat of recompression of the leaked working gas can be reduced.

When the cooling groove is formed only on the outer peripheral side of the spiral portion of the fixed scroll member and the receiving groove for the tip seal is formed on the center side, the sealing effect of the compression chamber on the center side of the spiral becomes high. In addition, since the cooling liquid can be pumped to the cooling groove from the passage provided in the fixed scroll member at a relatively low pressure, the power for pumping the cooling liquid can be saved.

When the accommodation groove of the tip seal is also used as the cooling groove, the compression leak of the working gas in the compression chamber is reduced by the tip seal and also by the cooling liquid, so that the sealing property of the compression chamber is reduced. And the compression leakage of the working gas in the compression chamber is further reduced, and the compression efficiency of the compressor is further improved.

[Brief description of drawings]

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

FIG. 2 is a cross-sectional view of the scroll compressor according to the first embodiment.

FIG. 3 is a cross-sectional view of a scroll compressor according to a second embodiment.

FIG. 4 is an enlarged sectional view of a housing groove portion of a scroll compressor according to a second embodiment.

FIG. 5 is a refrigeration cycle diagram showing a method of supplying a cooling liquid in the present invention.

FIG. 6 is a vertical cross-sectional view of the scroll compressor showing a method of supplying the lubricating oil for cooling in the present invention.

[Explanation of symbols]

1 ... Fixed scroll member, 8 ... Movable scroll member, 1
b, 8b ... Swirl portion, 11, 25 ... Chip seal accommodating groove, 12, 26 ... Chip seal, 13 ... Cooling groove, 14 ...
aisle

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tatsuya Hirose 2-chome, Toyota-cho, Kariya city, Aichi prefecture Toyota Industries Corporation

Claims (3)

[Claims] 1. A compression chamber formed between a fixed scroll member having a spiral portion projecting from a substrate and a movable scroll member having a spiral portion projecting from the substrate, the compression chamber being formed between the scroll members. In a scroll compressor that performs a compression action by moving from the outer peripheral side to the center side of the spiral portion by the revolution movement of the movable scroll member, a spiral cooling groove is formed along the axial end surface of the spiral portion of the fixed scroll member. A cooling structure for a scroll compressor, wherein the cooling liquid is supplied to the cooling groove along a passage provided in the fixed scroll member. 2. The cooling groove is formed on the outer peripheral side and the accommodation groove for the tip seal is formed on the central side along the axial end surface of the spiral portion of the fixed scroll member. 1. A cooling structure for a scroll compressor according to 1. 3. A spiral groove is formed along the axial end surface of the spiral portion of the fixed scroll member, and the chip seal is accommodated in the groove and the cooling liquid is supplied. Item 3. A cooling structure for a scroll compressor according to Item 1.