JPH0413582Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a liquid receiver used in a refrigeration system.
For example, it is placed on the side of a condenser in an automobile air conditioner and is used as a liquid receiver for storing liquid refrigerant condensed in the condenser.

[Conventional technology]

In conventional air conditioners for automobiles, a liquid receiver as shown in FIG. 3 or 4 has been used for general liquid. That is, as shown in FIG.
The side wall surface and bottom surface of 20 are integrally molded to form a cup-shaped container. A lid body 121 is attached to the upper surface of the liquid receiver body 120 consisting of this cup-shaped container.
will be installed. The lid portion 121 and the liquid receiver body are both made of aluminum material, and are produced by cold or hot forging. Moreover, both 120 and 121 are joined by welding to form a pressure-resistant sealed space inside. In the figure, 129 indicates a welding location. , and the lid body part 12
1 is formed with a refrigerant inflow passage and a refrigerant distribution passage. The refrigerant inflow passage is connected to the refrigerant inlet pipe 123 via a joint 121a and a joint 124 formed in the lid portion 121. Further, the refrigerant outlet passage is connected to the refrigerant outlet side pipe 125 via a joint portion 121b and a joint 126 that are also integrally formed on the lid portion 121. Furthermore, a sight glass 127 for observing the state of the refrigerant in the liquid receiver body 120 and a melt bolt 128 as a gas safety valve are attached to the lid body part 121.

In addition, there is a refrigerant suction pipe 1 inside the receiver body.
30 is fixed to the lid body 121, and a dustproof filter 13 is attached to the lower part of this suction pipe 130.
3 is placed. Further, a desiccant 131 held in a desiccant container 132 made of felt is disposed within the receiver body 120 to remove moisture from the refrigerant.

The one in FIG. 4 shows the side wall portion 1 of the liquid receiver main body 140.
40a and the top surface part 140b are made integrally by forging aluminum material, and the bottom surface part 1
40c is a rounded sealed container as shown in the figure by swaging and narrowing the lower end portion of the cylindrical side surface portion 140a. This fourth
The one in the figure also has a refrigerant inlet joint 142 on the lid part 140.
and 143 are attached and fixed. Also the fourth
In the figure, the dustproof filter 146 is formed into a flat plate shape.

However, in the liquid receiver having the structure as shown in FIG. However, since the refrigerant passage etc. have a complicated shape, it is essentially difficult to form the lid body 121 integrally with the liquid receiver body 120. Furthermore, although the lid body 121 is formed separately in the case shown in FIG. This increases the cost of 121 molding. In addition, the lid body 121 whose height has been increased by forging is further provided with joint portions 121a and 121.
It is necessary to drill holes such as b, which further increases the production cost.

On the other hand, in the example shown in FIG.
0b is formed integrally with the cylindrical side wall 140a, the manufacturing cost for the top side is not as high as in the example shown in FIG. This requires a lot of processing time, resulting in an even more expensive product. Furthermore, since the bottom of the container is formed by swaging processing, stress generated within the structure of the aluminum material during the swaging process may cause the aluminum material to form fine edges and peel off from the surface. If the aluminum material peels off from the surface in this way, fine pieces will become trapped inside the liquid receiver body during the manufacturing process, and when used in a refrigeration system, the fine pieces will be treated as foreign matter in the depressurizing device. etc. will be obstructed.

Therefore, in the present invention, the bottom member of the liquid receiver body is formed separately from the side wall part, and this bottom member is attached to the bottom of the liquid receiver body, thereby reducing the overall production cost of the liquid receiver. did.

[Problems to be solved by the invention] However, forming the bottom member separately in this way is not possible, for example, as disclosed in U.S. Pat.
It is disclosed in JP-A No. 179084, JP-A-49-27762, and JP-A-54-150761.

The present inventors investigated the liquid receivers shown in the prior art, in which the bottom member is formed separately, and found that in all conventional types of liquid receivers, the pressure resistance of the bottom member is sufficiently ensured. It became clear that there was no such thing.

The present invention was devised in view of the above points, and aims to reduce the overall manufacturing cost by separately forming the bottom member as the liquid receiver body and joining it to the side wall of the liquid receiver body. In addition to this premise, the objective is to further increase the pressure resistance of the separately formed bottom member.

With this purpose in mind, the present inventors investigated conventional liquid receivers. As a result, in the devices described in Japanese Utility Model Application Publication No. 59-195473 and Japanese Utility Model Application Publication No. 49-27762, the bottom member has a dish shape with its outer periphery bent upward; It was found that the structure was such that the side wall of the liquid receiver body was fitted into the inner periphery of the liquid receiver body, which weakened the joint between the bottom member and the side wall of the liquid receiver body. That is, as mentioned above, the end of the bottom member is bent upward and is located on the outer periphery of the side wall of the receiver main body.
In such a state, it is basically impossible to join the bottom member and the side wall of the liquid receiver main body by welding. That is, if welding is used, the side wall of the liquid receiver main body will melt, and if the side wall does not have sufficient thickness, there is a risk that a hole will form from this weld.

In addition, in the device described in Japanese Utility Model Application Publication No. 57-179084, the bottom member has a dish shape with its outer periphery bent upward, and this bottom member is connected to the side of the liquid receiver body via an O-ring. It is adapted to engage with the inner surface of the liquid part. Therefore, the structure is such that it is inherently impossible to integrally join the bottom member and the side wall of the liquid receiver main body by welding. Furthermore, in this conventional model, the bottom member has a flat plate shape, so it easily deforms so that it swells in response to internal pressure.
Therefore, a sufficient pressure-resistant structure cannot be obtained.

Furthermore, in the device described in JP-A-54-150761, a groove is provided in the bottom member, and the lower end of the side wall of the receiver main body is inserted into this groove to connect the lower end of the side wall and the bottom member. It has a structure. Therefore, the bottom member needs to be thick enough to form the groove, which results in an unnecessary increase in thickness and weight of the bottom member. Furthermore, since the bottom member is flat, the structure is difficult to withstand pressure.

[Means for solving problems]

In view of the above drawbacks of the prior art, the present invention secures jointing of the bottom member by welding the separately formed bottom member to the side wall of the liquid receiver body.

Moreover, in the present invention, the bottom member is shaped to have a reinforcing bent part that is once formed by bending upward around the bottom plate portion and then continuously bent downward, and by forming the bottom member into such a shape, To greatly improve the pressure resistance of a bottom member.

Moreover, in the present invention, the end of the bent part is overlapped with the inside of the lower end of the liquid receiver body, and in this state, the bottom member and the liquid receiver body are welded together, so that the welding part is and the side wall of the liquid receiver body both at the lower end. This provides a structure that prevents holes from being made in the side wall of the liquid receiver body due to welding.

[Effect]

Since the present invention has the above structure, the bottom member can be formed by bending, and can be formed by inexpensive press molding. Moreover, by forming the bottom member in such a shape that it is once bent upward and then subsequently bent downward, a reinforced structure with sufficient pressure resistance can be obtained. Furthermore, since the outer periphery of the bottom member is a bent part that is bent from the upper side to the lower side, when the bottom member is assembled from the lower side of the liquid receiver body, this bent reinforcing part acts as a fitting guide, and the bottom part It is possible to improve the ease of assembling the material.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 shows a liquid receiver used in a refrigerator for cooling an automobile as a first embodiment of the present invention. This liquid receiver is used in an automobile refrigerator to introduce liquid refrigerant from a refrigerant condenser located at the front of the engine room, and after gas-liquid separation, to lead out only the liquid refrigerant to the expansion valve side. Further, the liquid receiver is attached to the side of the condenser. The liquid receiver main body 101 is formed by deep drawing an aluminum material, and a cylinder wall portion 101a and a cylinder top portion 101b are integrally formed. As is clear from the figure, the wall thickness of the cylinder top portion 101b is equal to that of the cylinder wall portion 10.
It is thicker than 1a. and the cylinder top 10
1b has a refrigerant inflow hole 101g and a refrigerant outflow hole 10.
1h is formed. Further, a cylindrical joint portion 101i is formed in the center of the cylinder top portion 101b to protrude downward. A refrigerant suction pipe 103 is fixed to this joint portion 101i. That is, the suction pipe 103 has a bulged portion 103a formed at its end, and this bulged portion 103a is fixed to the joint portion 101i. In addition, 104 is an O-ring, and the O-ring 1 ensures airtightness between the suction pipe 103 and the joint part 101i.
04.

Here, as shown in FIGS. 9A and 9B, the cylinder top portion 101b is formed into a flat portion around the refrigerant inflow hole 101g and the refrigerant outflow hole 101h. Each of these flat parts has a refrigerant inlet hole 1.
Screw holes 6a and 7a are formed adjacent to the refrigerant outlet hole 101h and the refrigerant outlet hole 101h.

FIGS. 7A and 7B are a front view and a plan view, respectively, showing the block joint 4 attached to the flat top portion on the side of the inflow hole 101g. This block joint 4 has a bolt through hole 4a formed at a position opposite to the screw hole 6a. The block joint 4 is made of aluminum alloy, and an L-shaped aluminum refrigerant pipe is arranged so as to pass through the joint 4. The tip of the refrigerant pipe protrudes downward from the block joint, and the tip 2' is disposed between the refrigerant inflow hole 101g. still,
Reference numeral 13 in FIG. 7 is an O-ring, which maintains airtightness between the tip 2' of the refrigerant pipe and the refrigerant pipe when it is fitted into the inflow hole 101g.

Figure 8 A and B are respectively the outflow side refrigerant holes 101.
The block joint 5 on the outflow side attached to h is shown. This block joint is formed as a protrusion 16 so that its lower part fits into the hole 101h. A recess is formed at a position facing this protrusion 16, and the sight glass 8 is attached to this recess. The block joint 5 is also made of aluminum alloy, and the sight glass 8 is fitted onto the block joint 5. Furthermore, refrigerant passages 5b and 5c are formed inside the block joint 5, and the protruding refrigerant pipe 3 is connected to these refrigerant passages. This refrigerant pipe 3
A locking portion is bulged at the end, and the block joint 5 is fitted into this locking portion.

15 in Figure 8 is a melt bolt, and when the internal refrigerant temperature rises above a predetermined value, the molten metal inside the melt bolt melts and releases the refrigerant into the atmosphere, causing an abnormal increase in the pressure inside the liquid receiver. This is to prevent Further, a bolt through hole 5a is formed in the block joint 5, and this hole 5a is arranged at a position opposite to the screw hole 7a shown in FIG.

FIG. 5 shows a state in which the block joints 4 and 5 described above are attached to the top portion 1a of the liquid receiver body 1. In the example shown in FIG. 5, the top portion 101b is formed separately from the side wall of the liquid receiver main body 101, but the upper surface of the top portion 101b is formed into a flat portion as in FIGS. 9A and 9B. As shown in FIGS. 5 and 6, the block joint 4 is fixed to the top portion 101b of the liquid receiver by bolts 6. As shown in FIGS. Similarly, the block joint 5 is also fixed to the top 101b of the receiver using bolts 7.

Returning to FIG. 1 again, the internal structure of the liquid receiver body 1 will be explained. A desiccant 105 for removing moisture from the refrigerant is disposed inside the receiver body. This desiccant 105 is held between upper and lower sides by felts 106, and the felts 106 are further held by perforation prevention plates 107 and 108. A through hole is formed in the center of the hole stopper plates 107 and 108, and the refrigerant suction pipe 103 passes through the inside thereof. Then, each of these positions, that is, the hole stopper plate 1
07, the felt 106, the desiccant layer 105, the felt 106 and the perforated stopper plate 108 are connected to the refrigerant suction pipe 10 by a push nut 109 to prevent falling.
It is fixed at 3.

A bottom member 102 is welded and fixed to the lower end 101c of the liquid receiver body 101. This bottom member 10
2 is a bottom plate portion 102a that covers the bottom of the liquid receiver body 1;
and a flange-like reinforcing structure portion 102b that is once formed by being bent upward by the peripheral portion of the bottom plate portion and then subsequently formed by being bent downward. As is clear from FIG. 1, the reinforcing structure portion 102
has a cylindrical shape that substantially matches the inner diameter of the lower end of the liquid receiver body 101, and the outer periphery of the reinforcing structure portion 102b and the inner periphery of the lower end 101c are in contact with each other.

Then, the bottom plate member 102 is fitted into the liquid receiver body from below the liquid receiver body 101, and in this fitted state, the lower end of the joint between them is welded. Note that 101 in the figure indicates this welding joint location.

Here, as described above, the reinforcing structure portion 102b is once formed by being bent upward and then subsequently bent downward, so that the upper end thereof is formed smoothly, and therefore the bottom member 102 is formed from below the liquid receiver body 101. It will be well guided during insertion.

In addition, as is clear from Fig. 1, welding point 10
Since 0 is the lower end of each of the reinforcing structure part 102b and the side wall part 101a of the receiver main body, a sufficient thickness of the material in the welding direction is ensured. That is, even if the welded portion 100 is melted to a predetermined value or more, a hole will not be made in the liquid receiver main body side wall portion 101a. In other words, the welded portion 100 does not reduce the wall pressure of the liquid receiver main body side wall portion 101a.

Further, in this example, the bottom member 102 is the bottom plate portion 102.
a and the reinforcing structure portion 102b are both integrally formed by press-molding an aluminum plate. Therefore, in this example, the bottom member can be molded relatively inexpensively. Furthermore, since the bottom member is provided with the reinforcing structure portion 102b on its outer periphery as described above, sufficient pressure resistance can be ensured even if a relatively thin aluminum plate is used.

Next, the assembly structure of the liquid receiver constructed as described above will be explained. First, as shown in FIG. 1, the top portion 101b and side wall portion 101a of the liquid receiver body are simultaneously deep drawn. At the same time, a refrigerant inlet hole 101g, a refrigerant outlet hole 101h, and screw holes 6a, 7a as shown in FIG. 9 are formed in the top portion 101b.

In this state, the refrigerant suction pipe 103 is fitted and coupled to the joint portion 101i communicating with the refrigerant inlet 101h. This connection is made between the bulge 103 and the joint 101.
This is done by tightening the lower end of the joint portion 101a while holding the O-ring 104 between the holes i.

Thereafter, the desiccant 105 held between the pressing plates 107 and 108 and the felt 106 is inserted into the receiver body 101 from below, and after insertion is fixed to the refrigerant suction pipe 103 with a bushing nut 109.

After the desiccant 105 is installed inside the receiver body, the bottom member 102 is attached to the lower end 10 of the receiver body.
1 side, the inner periphery of the reinforcing structure portion 102b is at the lower end 10
Insert it so that it comes into contact with the inner periphery of 1c. Then, in that state, the bottom member 102 and the liquid receiver main body 100
Weld with. This welding is performed, for example, by TIG welding.

Through the above steps, the assembled state shown in FIG. 1 is achieved. Meanwhile, apart from the above steps, block joints 4 as shown in FIGS. 7A and 7B are formed. This block joint 4 is formed by cold or hot forging aluminum material.
An aluminum alloy refrigerant pipe 2 is connected to this block joint 4. On the other hand, as shown in FIGS. 8A and 8B, the block joint 5 on the coolant outlet side is also formed in advance. The shape of this block joint 5 is also formed by cold or hot forging aluminum alloy. Then, a sight glass 8 is fitted and fixed to the block joint 5 via an O-ring. Further, the melt bolt 15 is screwed so as to face the internal refrigerant passage 5c of the block joint 5. At the same time, the refrigerant pipe 3 on the outlet side is fixed so as to communicate with the refrigerant passage 5c.

The block joint formed in advance in this manner is fixed by bolts 6 and 7 to the upper surface of the top portion 101b of the liquid receiver body configured as shown in FIG. At this time, since the bolts are tightened from the upper side of the liquid receiver main body 1, the attachment operation can be performed extremely easily.

The process of forming the liquid receiver main body 101 in the form shown in FIG. 1 and the process of forming block joints as shown in FIGS. It is done by hand. On the other hand, the fifth
As shown in the drawings and FIG. 6, the step of screwing the block joints 4 and 5 to the top portion 101b of the liquid receiver body 101 is performed during the step of actually installing the refrigeration system. That is, the block joints 4 and 5 would be installed in the engine room if the air conditioner is for an automobile.

Next, the operation of the liquid receiver having the above structure will be explained. The liquid refrigerant condensed in the condenser of the refrigeration system flows into the receiver main body 101 through the inlet side piping. The liquid refrigerant is separated into a liquid refrigerant and a gas refrigerant in a sealed space within the liquid receiver body 101, and the liquid refrigerant is stored below. Note that moisture contained in the refrigerant is removed by the desiccant 105. Then, the refrigerant from which water has been removed is sucked up by the refrigerant suction pipe 103 and discharged from the refrigerant pipe 3 through the refrigerant passage 5c of the block joint 5. This refrigerant pipe 3 is in communication with a pressure reducing means arranged inside the vehicle cabin, and supplies liquid refrigerant to the pressure reducing means.

In this way, the liquid receiver body is located upstream of the pressure reducing means and stores the high-pressure refrigerant of the refrigeration cycle. In particular, in this example, since the bottom member 102 is formed separately, durability when the bottom member 102 is subjected to high pressure becomes a problem. However, the bottom member 1 of the present invention
Since the bottom member 102 is reinforced by bending and forming a flange-shaped reinforcing portion 102b around the bottom member 102, the bottom member 102 will not be deformed even if high pressure is applied to the inside.
Moreover, since the welding point between the bottom member 102 and the receiver main body 101 is at the lower end of the receiver, a sufficient amount of welding can be achieved.

It should be noted that, although the above-mentioned example is a desirable example of the present invention, the present invention has various aspects other than the above-mentioned example.

FIG. 2 shows another example of the present invention in which a tapered part 101e is formed in the lower part of the liquid receiver main body 1, and a bottom part 10
This is an example in which the projected area of 2' is reduced. This second
Even in the illustrated example, the bottom member 102' is the bottom plate portion 10.
The reinforcing structure part 10 is formed by once bending upward from 2a' and then bending downward again.
2b' is molded. The outer periphery of the reinforcing structure portion 102b' comes into contact with the inner wall 101c' at the lower end of the side wall of the liquid receiver main body.

In the example shown in FIG. 2, the projected area of the bottom member 102' is made smaller by the tapered part 101e, so that the internal pressure applied to the bottom member 102' can be reduced, and the joint strength of the welded part 100 can be increased to the first level.
It is possible to have a more spacious structure compared to the illustrated example.

10 and 11 show other examples of the discharge side block joint 5, which, like the example shown in FIG. This is a structure for fixing the piping 3. In the example shown in FIG. 10, the refrigerant pipe 3 is connected by tightening the joint 20a at the end of the block joint. Note that 22 is an O-ring for maintaining airtightness. In the illustration in FIG. 11, a sleeve 23 is used to reinforce the connection of the further part.

FIGS. 12A to 12F show an example in which the refrigerant pipes are rotatably attached. That is, the L-shaped inlet pipe 2 is loosely fitted into the block joint 4, and the relative angle between the inlet refrigerant pipe 2 and the block joint 4 is free until the bolts 6 are tightened and fixed. will be set. Therefore, as shown in FIG. 12 A and B, it may be assembled so that the longitudinal direction of the block joint 4 and the axial direction of the refrigerant pipe 2 coincide, and as shown in FIG. 12 E and F, the refrigerant on the inlet side The piping 2 may be installed at an angle. Furthermore, as shown in FIGS. 12C and 12D, the longitudinal axis of the block joint 4 and the refrigerant pipe 2 may be perpendicular to each other.

Similarly, the examples shown in FIGS. 12A to 12F show examples in which the third position of the refrigerant pipe of the block joint 5 can be set in two ways. This shows both cases in which the refrigerant passage 5c is bored in the block joint 5 from the right direction in the figure and from the left direction. Figures 12A, 12C, and 12E show an example in which the refrigerant pipe 3 is attached to the block joint 5 from the left side in the figure. 12B, D and F show an example in which the refrigerant pipe 3 is fixed by twisting it toward the right side of the block joint 5.

In addition, in the above example, only the sight glass 8 was fixed to the outlet side block joint 5, but the first
Figure 3 A, B, Figure 14 A, B, Figure 15, 16
As shown in FIGS. 17 and 18, a pressure switch 31 may be attached to the block joint. This pressure switch measures the pressure of the refrigerant discharged from the liquid receiver, that is, the high pressure upstream of the pressure reducing means in the refrigeration cycle. Specifically, when the high-pressure side pressure rises to a predetermined value or more, an electric signal is output to ensure the safety of the refrigeration system. In particular, in the embodiments shown in FIGS. 14 to 16, in addition to the first pressure switch 31, a second pressure switch 31' is also used as the pressure switch 31. Thereby, the high pressure side pressure of the refrigeration system can be detected in two stages.

In the examples illustrated in FIGS. 13 to 18, especially the 17th
As shown in the figure, the pressure switch 31 is fixed to the block joint 4 by screws. In the examples shown in FIGS. 17 and 18, the pressure switch 31 is fixed to the block joint 4 on the inflow side. This means that the refrigerant pressure at the inflow side block joint 5 and the refrigerant pressure at the outflow side block joint 5 are both high pressure at the upstream side of the pressure reducing means of the refrigeration system, although there is some pressure loss in the receiver 101 passage. This is because it can detect almost the same characteristics.

In addition, in the illustrated example in FIGS. 15 and 16, a refrigerant replenishment valve 52 is provided at the inlet side block joint 4.
An example is shown below. This replenishment valve 52 is used to supply new refrigerant into the receiver 101 through this valve 52 when the amount of refrigerant in the refrigeration system decreases.

In Fig. 19, not only the inlet side refrigerant pipe 2 but also the outlet side refrigerant pipe 3 are formed in an L shape, and the bulge part with the pipes 2 and 3 is formed by the inlet side block joint 4 and the outlet side block joint 5. Shows the structure to be fixed. Further, FIG. 20 is a plan view showing the inlet side block joint 4 and the outlet side block joint 5 shown in FIG. 19. As is clear from FIGS. may have a structure that does not include any functional parts such as a sight glass. Functional parts such as the sight glass 8 and pressure switch 31 are provided separately on the base part 72.
It should be fixed with clips and screws.
In addition, in FIG. 19, the base portion 72 has joint portions 7 at both ends thereof.
2a and 72b are formed, and the outlet side refrigerant pipes 3 and 3' are fitted and fixed via these joints.

Figures 21 and 22 show block joint 4.
and 5 are fixed to the top surface of the liquid receiver body 101. In this example, the stud bolts 80 and 81 are fixed to the top surface of the lower part of the liquid receiver, and the stud bolts are connected to the block joint 4.
After inserting into the bolt through holes 5 and 5, it is screwed and fixed with nuts 82 and 83. This second
Even in the examples shown in FIGS. 1 and 22, the nuts 82 and 83 can be installed and fixed from the upper side of the liquid receiver, and the work of installing the refrigerant pipes 2 and 3 can be facilitated.

23A and 23B and FIGS. 24A and 24B show other examples of fixing the refrigerant pipes 2 and 3 to the block joints 4 and 5, respectively. In the example shown in FIG. 23, the bulge portion 2a of the refrigerant pipe is pressed against the block joint 4 by pressing the O-ring 92, and in this state, the clamp body 91 fixes the refrigerant pipe to the block joint 4. That is, the clamp member 91 has a structure in which the eye-shaped portion 91a fits into the fitting groove 90b of the block joint. As shown in FIG. 23B, the clamp member 91 has a U-shape, and fitting of the claw 91a into the groove 91b is achieved by sliding the clamp member 91 from the side. At this time, the piping will be guided by the notch 91c of the clamp member 91.

In addition, in the example shown in FIG. 24, the block joint 4,
5, and in that state the circlip 9
By fitting the refrigerant pipes 6 into the engagement grooves 95b, the refrigerant pipes 2 and 3 are prevented from coming off.

In the examples shown in FIGS. 23 and 24, a clamp material 91 or a circular clip 96 was used instead to fix the refrigerant pipes, but in any case, in this example, the refrigerant pipes 2, 3 and block joints 4, 5 are fixed. The connections are made using mechanical fixing structures such as eyelets or clamps, without using heat such as welding. Therefore, even when attaching relatively heat-sensitive parts such as the sight glass 8 and pressure switch 31 to the block joint, the heat generated when the refrigerant piping is connected will not have an adverse effect on functional parts such as the sight glass 8. do not have.

[Effect of idea]

As explained above, the liquid receiver of the present invention has a structure in which a flat surface is formed on the top of the receiver body and the block joint is fixed with bolts, and the refrigerant pipe is connected to the block joint in advance. This structure has the effect of facilitating connection between the refrigerant pipe and the liquid receiver body.

Furthermore, in the present invention, a bottom member is separately formed on the bottom surface of the liquid receiver main body, and this is fixed to the lower end of the side wall of the liquid receiver main body by welding, so that a closed container can be easily formed.

In particular, in the present invention, the bottom member has a reinforcing flange portion that is continuously bent upward from the periphery of the bottom plate portion and then continuously bent downward, so that the pressure resistance of the bottom member can be increased. In particular, when the bottom plate portion and the reinforcing flange portion are both press-molded in the bottom member, the manufacturing cost of the bottom member can be significantly reduced.

In addition, as mentioned above, a reinforcing flange is provided around the bottom member, and the end thereof is formed so as to face downward from above, and in that state, it is fitted into the inner periphery of the lower end of the liquid receiver body. , the welding between the bottom member and the liquid receiver body can be performed satisfactorily.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing the main body of the liquid receiver according to the present invention, Fig. 2 is a cross-sectional view showing another example of the liquid receiver of the present invention, and Figs. 3 and 4 are respectively conventional liquid receivers. 5 is a half sectional view showing the top of the liquid receiver of the present invention, FIG. 6 is a plan view of FIG. 5, and FIG.
B is a front view and a plan view of the block joint shown in FIG. 5, FIGS. FIGS. 10 and 11 are a partial sectional view and a plan view of the illustrated liquid receiver body, respectively. FIGS. 10 and 11 are a sectional view and FIG. Figures 13a to 13f are plan views showing modified examples of the refrigerant piping installation state of the liquid receiver of the present invention, respectively, and Figures 13a and 13b are views showing other examples of the outflow side block joint used in the liquid receiver of the present invention, respectively. Partial sectional view and side view, Figure 14 A,
B is a partial sectional view and a side view showing still another example of the block joint used in the liquid receiver of the present invention, FIG. 15 is a front view showing the liquid receiver of the present invention, and FIG. FIG. 17 is a sectional view showing another example of the liquid receiver of the present invention; FIG. 18 is a plan view of the liquid receiver illustrated in FIG. 17; FIG. 19 is a plan view of the liquid receiver of the present invention. FIG. 20 is a sectional view showing the top surface of the liquid receiver shown in FIG. 19, and FIG.
The figure is a front view showing still another example of the liquid receiver of the present invention, FIG. 22 is a plan view of the liquid receiver shown in FIG. 24A and 24B are a cross-sectional view and a side view showing still another example of the refrigerant pipe installation structure of the block joint used in the present invention, respectively. be. 1...Liquid receiver, 2...Inflow side refrigerant piping, 3...
Outflow side refrigerant piping, 4... Inflow side block joint, 5... Outflow side block joint, 100...
...Welded portion, 101... Liquid receiver body, 102... Bottom member.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A liquid receiver body consisting of a cylindrical airtight container extending in the vertical direction, and a lid member located at the top of the liquid receiver body and having a flat portion at its upper part. , a refrigerant inflow side block joint that is removably fixed to the flat part of the lid member with bolts and that guides the refrigerant into the receiver main body via the refrigerant pipe; and a refrigerant inlet block joint that is removably fixed to the flat part of the lid member with bolts a refrigerant outflow side block joint that is fixed to and guides the refrigerant out of the liquid receiver main body via a refrigerant pipe; a bottom plate portion 102a that is located at the bottom of the liquid receiver main body and covers the bottom of the liquid receiver main body; , a bent portion 102b that is once bent upward from the periphery of the bottom plate portion and then continuously bent downward so that its end overlaps and is welded to the inside of the lower end of the liquid receiver body; A liquid receiver for a refrigeration device, comprising: a bottom member having the following features: (2) Utility model registration The liquid receiver for a refrigeration device according to claim 1, characterized in that the bottom member is formed by integrally molding the bottom plate portion and the bending portion. do.