JPH09184668A - Condenser equipped with liquid tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a coupling part structure by detachably combining a liquid tank with a condenser and securely supporting the weight of the liquid tank with the coupling part. SOLUTION: A connection block 30 fixed to a condenser 23 side and a mounting block 36 fixed to a liquid tank 24 side are combined and fixed with a bolt 43. In the contained and fixed state, a support surface 33 provided on the connection block 30 and a surface 42 to be supported provided on the mounting block 36 are brought into contact with each other. Further, in the combined state, a refrigerant outlet of the condenser 23 and a refrigerant inlet of the liquid tank 24 are communicated with each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION A condenser provided with a liquid tank according to the present invention is installed in series between a compressor and an evaporator of a vapor compression refrigerator forming an automobile air conditioner. Then, after the refrigerant compressed by the compressor is radiated and condensed, the foreign matters such as water are removed and then sent to the evaporator.

[0002]

2. Description of the Related Art A vapor compression refrigerator is incorporated in an automotive air conditioner for cooling and dehumidifying the interior of an automobile.
FIG. 6 is a circuit diagram showing a basic configuration of a vapor compression refrigerator described in Japanese Patent Laid-Open No. 4-95522. The high-temperature, high-pressure gaseous refrigerant discharged from the compressor 1 exchanges heat with the air while passing through the condenser 2 to lower the temperature and become condensed and liquefied. The liquid refrigerant generated as a result is once stored in the liquid tank 3 and then sent to the evaporator 5 via the expansion valve 4 and evaporated in the evaporator 5. Since the temperature of the evaporator 5 decreases due to the deprivation of latent heat of vaporization, the flow of air for air-conditioning through the evaporator 5 reduces the temperature of the air and simultaneously removes the water vapor contained in the air. Can be. The refrigerant evaporated and vaporized in the evaporator 5 is sucked by the compressor 1 and compressed, and the cycle is repeated again.

A liquid tank 3 constituting such a vapor compression refrigerator of an air conditioner for an automobile is conventionally provided with a condenser 2
And a pipe made between the condenser 2 and the evaporator 5. However, when the liquid tank 3 is configured separately from the condenser 2 as described above, not only is the installation space of the liquid tank 3 increased, but the liquid tank 3 is independent of the condenser 2 and has sufficient vibration resistance. It becomes necessary to attach it to the vehicle body by holding it.

In order to solve such a trouble, conventionally, a structure in which the liquid tank 3 and the condenser 2 are integrally formed is disclosed in JP-A-3-87572 and JP-A-4-103973.
Various proposals have been made as described in JP-A No. 4-131667 and the like. FIG. 7 shows the structure disclosed in Japanese Patent Laid-Open No. 4-103973. The capacitor 2 has a pair of header pipes 6a and 6b that are spaced apart from each other in the horizontal direction (left-right direction in FIG. 7) and are arranged in the vertical direction (up-down direction in FIG. 7). A plurality of flat heat transfer tubes 7 are provided between the pair of header pipes 6a and 6b. The plurality of flat heat transfer tubes 7, 7 are arranged in the horizontal direction so as to be separated from each other in the vertical direction. And each of these flat heat transfer tubes 7, 7
Both ends of the pair of header pipes 6a, 6a
b is airtightly and liquid-tightly penetrated, and the respective inner flow paths are made to communicate with the inner side of each of the header pipes 6a and 6b. The core portion 9 is formed between the flat heat transfer tubes 7 vertically adjacent to each other by sandwiching corrugated fins 8 formed of zigzag thin metal plates. Side plates 10 and 11 are provided on the upper and lower sides of the core portion 9, respectively.
0 and 11 are connected to the header pipe 6a,
6b is fixedly coupled to the upper and lower side surfaces of both ends.

In the condenser 2 having the above-mentioned structure, the refrigerant flowing in the flat heat transfer tubes 7 and the air flowing outside the flat heat transfer tubes 7 and 7 exchange heat in the core 9. The refrigerant is condensed and liquefied. That is, the gaseous refrigerant sent from the inlet pipe 12 provided at the upper part of the header pipe 6a on one side (the right side in FIG. 7) is supplied to the header pipe 6a and the header pipe 6b on the other side (the left side in FIG. 7). While flowing back and forth between them, they flow in the flat heat transfer tubes 7, 7 that constitute the core portion 9, and are condensed and liquefied in the meantime. The resulting liquid refrigerant accumulates at the lower end of the one header pipe 6a and is sent from the refrigerant transfer pipe 13 to the liquid tank 3.

On the other hand, the liquid tank 3 is fixed to the side surface of the one header pipe 6a. That is, the cylindrical case body 14 constituting the liquid tank 3 is fixed to the side surface of the header pipe 6a by brazing or the like. The lower end opening of the case body 14 is closed by a bottom plate 15, and the upper end opening is closed by an upper plate 16.
The refrigerant transfer pipe 13 penetrates through the bottom plate 15, and the refrigerant transfer pipe 13 is inserted into the center of the case body 14. Therefore, a cylindrical space 18 is formed between the outer peripheral surface of the refrigerant transfer pipe 13 and the inner peripheral surface of the case body 14. In addition, a large number of small holes 1 are formed in a portion of the upper end of the refrigerant transfer pipe 13 existing above the case body 14.
7 and 17 are formed so that the liquid refrigerant sent from the header pipe 6a into the refrigerant transfer pipe 13 can be discharged freely. In addition, in the middle of the space 18, in order from the bottom,
A filter 19 for collecting and removing foreign matter such as dust, made of a porous material such as felt, a desiccant 20 such as silica gel and calcium chloride, and a porous restraint plate 21 such as wire mesh and punching metal. , Are provided in series with each other. Further, an outlet pipe 22 is provided at the lower end of the case body 14 so that the liquid refrigerant accumulated at the lower end of the space 18 can be taken out.

When the condenser having the liquid tank constructed as described above is used (when the vapor compression refrigerator having the condenser having the liquid tank is operated),
The refrigerant flowing as shown by the arrow in FIG. 7 is condensed and liquefied in the condenser 2 and then fed into the liquid tank 3. Then, the clean refrigerant from which water and foreign substances have been removed in the liquid tank 3 is sent out from the outlet pipe 22 toward the expansion valve 4 (see FIG. 6) immediately before the evaporator 5.
The condenser having the liquid tank configured and functioning as described above can handle the condenser 2 and the liquid tank 3 integrally, so that the condenser 2 can be easily installed in a limited space inside the engine room, and the condenser 2 and the liquid tank 3 can be easily installed. Since it is not necessary to independently secure vibration resistance with the tank 3, the installation work can be facilitated.

[0008]

However, in the case of the condenser having the conventional liquid tank configured and functioning as described above, when the liquid tank 3 needs to be repaired or replaced, the liquid tank 3 needs to be repaired or replaced. Only 3 can not be attached or detached. That is, even if a problem occurs only in the liquid tank 3, it is necessary to remove the entire capacitor 2 from the vehicle body. Therefore, the repair and replacement work of the liquid tank 3 becomes troublesome, and the repair cost increases. JP Hei 3
The same applies to the case of the invention described in Japanese Patent No. 87572.

On the other hand, the above-mentioned Japanese Unexamined Patent Publication No. 4-13166
Japanese Unexamined Patent Publication 7 discloses an invention in which a liquid tank is attachable to and detachable from a condenser. However, in the case of the invention described in this publication, since the liquid tank is supported and connected to the header pipe at two upper and lower positions, the supporting and connecting work becomes troublesome, and the assembling work, the repair work and the replacement work are performed. Is troublesome, and the cost required for these increases. The condenser equipped with the liquid tank of the present invention is
The invention was made in view of such circumstances.

[0010]

A capacitor provided with a liquid tank of the present invention satisfies the following requirements (1) to (3). The condenser and the liquid tank are arranged in series from the upstream side to the downstream side with respect to the flow direction of the refrigerant. The capacitor is a pair of header pipes spaced apart from each other and spaced apart from each other,
Each includes a plurality of heat transfer tubes that communicate the pair of header pipes with each other, and fins that are arranged between adjacent heat transfer tubes. A connection block having a discharge port is fixed to the side surface at one end of one of the pair of header pipes, and the downstream end of the condenser communicates with this discharge port. The above liquid tank has a case where the upper end is blocked,
An attachment block fixed to the lower end of the case and detachable from the connection block, and a part of a side surface of the attachment block. The ejection port in a state where the attachment block is connected and fixed to the connection block. An inlet communicating with the inlet, an outlet provided on the side surface of the other part of the mounting block, a lower end portion of the inlet communicating with the inlet, and a refrigerant transfer pipe having an upper end opened inside the upper portion of the case. Equipped with. The connection block is provided with a screw hole and a bearing surface facing upward, and the mounting block is provided with a through hole and a bearing surface facing downward, respectively, which bearing surface and the bearing surface. The outer end opening of the screw hole and the one end opening of the through hole are aligned with each other. The connection block and the mounting block are further tightened by screwing a bolt inserted through the through hole from the other end opening to the one end opening into the screw hole with the supported surface and the supporting surface in contact with each other. It is fixed by joining.

[0011]

In the capacitor having the liquid tank of the present invention configured as described above, when the liquid tank is coupled and fixed to the capacitor, the bolt inserted through the through hole provided in the mounting block is connected to the connection block. Tighten by screwing into the provided screw hole. When the bolts are screwed and tightened into the screw holes while the bearing surface of the connection block and the bearing surface of the mounting block are in contact with each other, the connection block and the mounting block are permanently connected. At the same time, it is possible to prevent the mounting block from rotating around the bolt due to the engagement between the bearing surface and the supported surface. Therefore, the displacement of the liquid tank with respect to the condenser can be reliably prevented only by tightening one bolt. When removing the liquid tank from the condenser for repair or replacement, loosen the above bolts,
The tip of this bolt is pulled out from the screw hole. As a result, the mounting block is separated from the connection block,
You can repair or replace only the liquid tank, leaving the condenser as it is.

[0012]

1 and 2 show a first example of an embodiment of the present invention in which a so-called lateral flow type condenser in which a refrigerant flows horizontally between a pair of header pipes. The applied example is shown. As shown in FIG. 1, a condenser provided with a liquid tank of the present invention includes a condenser 23 and a liquid tank 24, which are connected in series with each other from the upstream side to the downstream side with respect to the flow direction of the refrigerant shown by the arrow in the figure. It is arranged in. And the liquid tank 24
Are provided beside the capacitor 23.

The capacitor 23 includes a pair of left and right header pipes 25a and 25b which are spaced from each other. Each of these header pipes 25a, 2
Partition walls 26a and 26b are provided on the inside of 5b, respectively, and partition the inner middle portions of the header pipes 25a and 25b while maintaining airtightness and liquid tightness. The height position of the partition wall 26a provided on one (right side of FIG. 1) header pipe 25a and the height position of the partition wall 26b provided on the other (left side of FIG. 1) header pipe 25b should be different from each other. There is.
A plurality of flat heat transfer tubes 27, 27 (see FIG. 2) are provided between the inner surfaces of the pair of left and right header pipes 25a, 25b. Both ends of each heat transfer pipe 27, 27 penetrate through the inner side walls (walls on the opposite sides) of the header pipes 25a, 25b, respectively, while maintaining airtightness and liquidtightness.
Further, the heat transfer tubes 27, 27 are arranged in parallel with each other in a vertically spaced manner, and a corrugated fin 28, between the heat transfer tubes 27, 27 which are vertically adjacent to each other,
28 (see FIG. 2) is provided. The upper and lower ends of the core portion 29 composed of the plurality of heat transfer tubes 27, 27 and the fins 28, 28 have side plates 10, 11 (see FIG. 7) similar to the conventional structure shown in FIG. 7 is omitted. In Fig. 1, only the end of the side plate 11 at the lower end is shown in Fig. 2.).

A connection block 30 is provided on the outer surface of the lower portion of the header pipe 25a below the partition wall 26a, and the partition wall 2 is provided on the other header pipe 25b.
An inlet block 31 is provided on the outer surface of the upper portion of 6b,
Each is fixed. Connection block 30 of these
Is made of an aluminum alloy like the capacitor 23 including the header pipe 25a. The connection block 30 is formed in a thick L shape as a whole, and is brazed and fixed to the lower outer surface (the surface opposite to the core portion 29) of the header pipe 25a with the wide side facing down. There is.

On the outer surface of the upper portion of the connection block 30,
The discharge port 32 is opened. The discharge port 32 penetrates the upper portion of the connection block 30 and the lower outer wall portion of the header pipe 25a, and communicates with the inside of the lower portion of the header pipe 25a. In addition, a flat bearing surface 33 is provided on the upper surface of the lower half of the connecting block 30 which is formed wider than the upper portion and which projects outward more than the narrow outer side surface of the upper portion. There is. Further, a screw hole 34 is opened on the outer surface of the lower portion of the connection block 30. Unlike the discharge port 32, the screw hole 34 does not communicate with the inside of the header pipe 25a. That is, in a portion of the header pipe 25a that is aligned with the screw hole 34,
In particular, no through hole or the like is formed.

On the other hand, the liquid tank 24 is provided with a cylindrical case 35 whose upper end is closed, and a mounting block 36 fixed to the lower end of the case 35. The attachment block 36 is detachable from the connection block 30. For this reason, the mounting block 36 is provided with a coupling portion 38 that is connectable to the connection block 30 on the lower surface of the lid plate portion 37 that closes the lower end opening of the case 35. The entire joint portion 38 is formed in an inverted thick L-shape, and is provided integrally with the lid plate portion 37 below the lid plate portion 37 with the wide side facing up.

An intake port 39 is provided on the inner surface of the upper portion of the coupling portion 38 so as to project from the inner surface of the upper portion. The intake port 39 is formed in the connection block 30 in a state where the coupling portion 38 forming the attachment block 36 is connected and fixed to the connection block 30.
Communicate with O on the outer peripheral surface of the tip of the intake port 39.
The ring 40 is locked all around. The outer peripheral edge of the O-ring 40 elastically abuts the inner peripheral surface of the discharge port 32 in a state where the intake port 39 and the discharge port 32 are communicated with each other, and the communication portion between the intake port 39 and the discharge port 32 is connected. To secure the sealing property of.

The connecting portion 3 which constitutes the mounting block 36.
A through hole 41 is formed in the lower portion of 8. In addition, a flat bearing surface 4 is formed on the lower surface of the wide upper portion that constitutes the coupling portion 38 and projects inwardly than the narrow lower portion.
2 are provided. The outer end (right end in FIGS. 1 and 2) opening of the screw hole 34 provided in the connection block 30 and the one end opening of the through hole 41 correspond to the supported surface 42 and the connection block 3.
With the bearing surface 33 of 0 abutting, they are aligned with each other. To connect the connecting block 30 and the mounting block 36, the supported surface 42 and the supporting surface 33 are brought into contact with each other, and the through-hole 41 is inserted in the state where the intake port 39 is inserted into the discharge port 32. The bolt 43 is inserted from the other end (right end in FIGS. 1 and 2) opening toward the one end opening. Then, the tip portion of the bolt 43 is screwed into the screw hole 34 and further tightened.

Further, the upper end of the intake port 39 is opened to the upper surface of the lid plate portion 37, and the lower end portion of the refrigerant transfer pipe 13 is connected to this opening portion. The upper end of the refrigerant transfer pipe 13 opens inside the upper portion of the case 35.
Therefore, the liquid refrigerant sent from the discharge port 32 into the refrigerant transfer pipe 13 through the intake port 39 is discharged from the upper end opening of the refrigerant transfer pipe 13 into the upper inside of the case 35. In the middle portion of the case 35, the filter 19, the desiccant 20, and the
A restraining plate 21 and the like are provided to remove water and foreign substances mixed in the refrigerant. Therefore, the refrigerant sent to the upper part of the case 35 flows down to the bottom part of the case 35 after removing foreign matters such as water.

Further, an upper end of the outlet port 44 is opened at a portion of the upper surface of the lid plate portion 37 which constitutes the mounting block 36, which is out of the upper end opening of the intake port 39. Then, the lower end of the outlet port 44 is opened to the upper outer surface of the coupling portion 38 that constitutes the mounting block 36. Therefore, the clean liquid refrigerant flowing down to the bottom of the case 35 is taken out of the liquid tank 3 through the outlet port 44. The lower end opening of the outlet port 44 is the outlet in the claims.

When a condenser equipped with the liquid tank of the present invention constructed as described above is incorporated in a vapor compression refrigerator, a refrigerant communicating with the compressor 1 (FIG. 6) is provided in an inlet port provided in the inlet block 31. The downstream end of the pipe
The outlet ports 44 provided in the mounting block 36 are connected to the upstream ends of the refrigerant pipes communicating with the evaporator 5 (FIG. 6). For example, in order to take out the above-mentioned clean liquid refrigerant to the outside of the liquid tank 24, as shown in FIG. 2 (not shown in FIG. 1), the connecting block 4 is attached to the outer surface of the mounting block 36.
5 is connected and fixed. The connection block 45 includes a through hole 46 that matches the through hole 41, and the discharge port 4 is provided.
A pipe 47 leading to the expansion valve 4 (FIG. 6) is connected to a position aligned with the lower end opening of the valve 4. In order to connect the pipe 47 to the mounting block 36 via the connecting block 45, the bolt 43 is inserted into the through holes 46 and 41, and further screwed into the screw hole 34 to be tightened. When the compressor 1 is operated in this state, the condenser equipped with the liquid tank of the present invention condenses the refrigerant discharged from the compressor 1 and then sends it to the evaporator 5.

The refrigerant gas sent to the condenser 23 from the inlet port provided in the inlet block 31 is passed through the plurality of heat transfer tubes 27, 27 constituting the condenser 23.
While flowing back and forth between the pair of header pipes 25a and 25b, heat is exchanged with the air passing between the heat transfer pipes 27 and 27 and the fins 28 and 28 to condense and liquefy. The resulting liquid refrigerant is sent from the discharge port 32 provided in the connection block 30 to the intake port 39 provided in the mounting block 36 constituting the liquid tank 3. The liquid refrigerant thus sent to the intake port 39 is sent to the upper part of the case 35 through the refrigerant transfer pipe 13 and then flows down inside the case 35. Then, while flowing down, the filter 19 and the desiccant 20 remove water and foreign substances mixed in the refrigerant, and then send out toward the evaporator 5 through the discharge port 44.

When it is necessary to repair or replace the liquid tank 24, the bolt 43 is removed to attach the mounting block 36 provided at the lower end of the liquid tank 24 to the lower portion of the one header 25a. It is removed from the connection block 30 fixed to the outer surface. As a result, it is possible to repair or replace only the liquid tank 24 while leaving the condenser 23 as it is.

In particular, in the case of the condenser provided with the liquid tank of the present invention, the bearing surface 42 provided on the mounting block 36 fixed to the side of the liquid tank 24 is attached to the condenser 2
It is brought into contact with a bearing surface 33 provided on a connection block 30 fixed on the third side. Therefore, the weight of the liquid tank 24 can be supported by the condenser 23, and by supporting the condenser 23 on the vehicle body, the weight of the liquid tank 24 can be reliably supported by the vehicle body. Therefore, the liquid tank 24 can be reliably supported with respect to the condenser 23 only by supporting and coupling the connection block 30 and the mounting block 36.

In the above-mentioned first example, both the connecting block 30 and the mounting block 36 are thick L-shaped, but the two blocks 30, 36 are not limited to such a shape. . For example, the second example shown in FIG.
Alternatively, it may have a shape like the third example shown in FIG. In the case of the second example, the connection block 30a has a substantially rectangular parallelepiped shape with the upper surface 48 being a flat surface. On the other hand, the mounting block 36a is provided with an eaves portion 49 projecting toward the upper surface 48 at the upper end thereof. The lower surface 50 of the eaves 49 is a flat surface that contacts the upper surface 48. The inner side surface of the mounting block 36a, which is lower than the eaves portion 49, is a flat surface that comes into contact with the outer side surface of the connection bracket 30a. The lower surface 50 is a supported surface, and the upper surface 48 is a supported surface. Further, in the case of the third example, the connection block 30b is formed in a lateral convex shape, and the mounting block 36b is formed in a lateral concave shape. In the case of the third example, the discharge port 32 is provided on the outer surface of the upper end portion, and the screw hole 34 is provided at the most protruding intermediate portion. The uppermost surface 51 of the most protruding middle portion is the bearing surface. Also, the mounting bracket 36b
The upper surface 52 of the recessed portion is the bearing surface.

Next, FIG. 5 shows a fourth embodiment of the present invention.
As an example, an example is shown in which the present invention is applied to a so-called vertical flow type condenser in which a refrigerant flows vertically between a pair of header pipes. Further, in the case of the present example, a sub-condenser 53 integrally formed with the condenser 23a is provided on the downstream side of the liquid tank 24a with respect to the flow direction of the refrigerant.
It is provided in series with a. Each of the capacitor 23a and the sub-capacitor 53 is configured to include a pair of upper and lower header pipes 25a 'and 25b' which are spaced from each other. Each header pipe 25a ', 25b'
A partition wall (not shown) is provided inside the portion near one end (the portion near the left in FIG. 5) of each header pipe 25a.
The inside of one end (left end in FIG. 5) of ', 25b' is airtight
Partitioned while maintaining liquid tightness. Then, a part of the pair of header pipes 25a ', 25b' constitutes a portion of the capacitor 23a that is closer to the other end than the partition walls (a portion to the right of FIG. 5).
The sub-capacitor 53 is formed by the remaining portions 5a 'and 25b' which are closer to one end than the respective partition walls. or,
Heat transfer tubes 27a, 27a and sub heat transfer tubes (not shown) that form the condenser 23a and the sub condenser 53.
Is arranged in the vertical direction with the fins 28a, 28a sandwiched between the pair of header pipes 25a ', 25b' and the horizontally adjacent heat transfer pipes 27a, 27a and the sub heat transfer pipes. I have set up. Also, these heat transfer tubes 27
Side plates 10a and 11a are provided on both left and right edges of a core portion 29a including a and 27a, sub heat transfer tubes and fins 28a and 28a, respectively.

A connection block 30c is provided on the front side surface of one end of the header pipe 25a '(lower side in FIG. 5), and an inlet block is provided on the upper side surface of the other end (upper side of FIG. 5) of the header pipe 26b'. 31a are fixed by brazing. Of these, the connection block 30c is provided with a discharge port located near the center (rightward in FIG. 5) of the one header pipe 25a ′ and a feed port similarly located near one end (leftward in FIG. 5). . Then, the discharge port of these is communicated with a part of the inside of the header pipe 25a 'at a portion closer to the center of the header 25a' than the partition wall. Further, the feed port is a portion of the header pipe 25a 'closer to one end than the partition wall, and the header pipe 25
It communicates with the inside of the rest of a '. In the case of this example, the entire upper surface 48a of the connection block 30c is flattened, and a part of the upper surface 48a functions as a bearing surface. Further, the inlet block 31a has an inlet port 54
Is provided, and the inlet port 54 is communicated with the inside of the other end portion of the other header pipe 25b '. The refrigerant sent from the inlet port 54 has a pair of header pipes 25a 'and 25b', as indicated by arrows in FIG.
It flows while folding back the portion between them and reaches the discharge port. That is, the inlet port 54 corresponds to the upstream end opening of the condenser 23a, and the discharge port corresponds to the downstream end opening. or,
The feed port corresponds to the upstream end opening of the sub-condenser 53.

Further, with respect to the flow direction of the refrigerant, a mounting block 36c is fixed to the lower end of the case 35a which constitutes the liquid tank 24a connected in series between the condenser 23a and the sub condenser 53. The mounting block 36c is detachable from the connection block 30c. The upper half of the mounting block 36c is projected toward the one header pipe 25a 'side, and the lower surface of this projected portion is a flat supported surface 42a that closely contacts the upper surface 48a. Then, in a state where the upper surface 48a and the supported surface 42a are in contact with each other, the bolt 43a inserted into the central portion of the lower half of the mounting block 36c is used as a part of the mounting block 36c to serve as the discharge port and the feed port. The mounting block 36c can be joined and fixed to the connection block 30c by being screwed into a screw hole formed in the space between them and further tightened. In this state, the weight of the liquid tank 24a is supported by the connection block 30c. Incidentally, in accordance with the fact that the discharge port and the feed port provided in the connection block 30c are arranged in the horizontal direction, the intake port and the discharge port (not shown) of the mounting block 36c are also arranged in the horizontal direction. .

Further, an outlet block 55 having an outlet port 44a is fixed to the upper side surface of one end of the other header pipe 25b '. The outlet port 44a communicates with the inside of one end of the other header pipe 25b '. The refrigerant that has passed through the liquid tank 24a flows from the lower header pipe 25a 'to the upper header pipe 25b' in the sub-condenser 53 as shown by the arrow in FIG.
To reach the inside of one end of the other header pipe 25b '. Then, this refrigerant is discharged from the outlet port 44a, passes through the expansion valve 4, and then the evaporator 5
(See FIG. 6). As described above, the present invention is also applicable to a structure in which a pair of header pipes 25a 'and 25b' are arranged vertically and a refrigerant flows vertically between the header pipes 25a 'and 25b'. is there. In the structure of FIG. 5, the sub-capacitor 53 is omitted and the liquid tank 2
The refrigerant discharged from 4a may be directly sent to the expansion valve 4.

Since the condenser provided with the liquid tank of the present invention is constructed and operates as described above, the condenser and the liquid tank can be integrally handled as in the conventional structure, and therefore, the limit inside the engine room is limited. Since it is easy to install in the space provided and it is not necessary to separately secure the vibration resistance of the condenser and the liquid tank, the installation work can be facilitated. While maintaining the above effects as they are, if the liquid tank fails, only the liquid tank can be attached / detached without attaching / detaching the capacitor, so that the time required for repair and the cost can be reduced. . Moreover, since the liquid tank can be attached and detached only by operating one bolt, the attachment and detachment work is facilitated, and the assembly, disassembly and repair are facilitated, and the cost required for these can be reduced. It has an excellent effect.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a first example of an embodiment of the present invention with a liquid tank removed from a condenser.

FIG. 2 is an enlarged view of a portion A in FIG.

FIG. 3A in FIG. 1 showing a second example of the embodiment of the present invention.
FIG.

FIG. 4 is a view showing the third example and corresponding to a portion A in FIG. 1.

FIG. 5 is a schematic perspective view showing the fourth example.

FIG. 6 is a circuit diagram of a vapor compression refrigerator in which a condenser and a liquid tank are incorporated.

FIG. 7: 1 of conventional condenser with liquid tank
The partial longitudinal front view which shows an example.

[Explanation of symbols]

 1 Compressor 2 Condenser 3 Liquid Tank 4 Expansion Valve 5 Evaporator 6a, 6b Header Pipe 7 Flat Heat Transfer Tube 8 Fin 9 Core Part 10, 10a, 11, 11a Side Plate 12 Inlet Pipe 13 Refrigerant Transfer Pipe 14 Case Body 15 Bottom Plate 16 Top Plate 17 Small Hole 18 Space 19 Filter 20 Desiccant 21 Suppression Plate 22 Outlet Pipe 23, 23a Condenser 24, 24a Liquid Tank 25a, 25b, 25a ', 25b' Header Pipe 26a, 26b Partition Wall 27, 27a Heat Transfer Pipe 28, 28a Fin 29 , 29a Core part 30, 30a, 30b, 30c Connection block 31, 31a Inlet block 32 Discharge port 33 Bearing surface 34 Screw hole 35, 35a Case 36, 36a, 36b Mounting block 37 Lid plate part 38 Coupling part 39 Intake port 40 O Ring 41 through holes 42,42a the supported surface 43,43a bolt 44,44a outlet port 45 connecting block 46 through holes 47 pipe 48,48a top 49 visor portion 50 bottom surface 51 top surface 53 sub-condenser 54 inlet port 55 outlet block

Claims (1)

[Claims] 1. A condenser provided with a liquid tank, which satisfies the following requirements. The condenser and the liquid tank are arranged in series from the upstream side to the downstream side with respect to the flow direction of the refrigerant. The capacitor is a pair of header pipes spaced apart from each other and spaced apart from each other,
Each includes a plurality of heat transfer tubes that communicate the pair of header pipes with each other, and fins that are arranged between adjacent heat transfer tubes. A connection block having a discharge port is fixed to the side surface at one end of one of the pair of header pipes, and the downstream end of the condenser communicates with this discharge port. The above liquid tank has a case where the upper end is blocked,
An attachment block fixed to the lower end of the case and detachable from the connection block, and a part of a side surface of the attachment block. The ejection port in a state where the attachment block is connected and fixed to the connection block. An inlet communicating with the inlet, an outlet provided on the side surface of the other part of the mounting block, a lower end portion of the inlet communicating with the inlet, and a refrigerant transfer pipe having an upper end opened inside the upper portion of the case. Equipped with. The connection block is provided with a screw hole and a bearing surface facing upward, and the mounting block is provided with a through hole and a bearing surface facing downward, respectively, which bearing surface and the bearing surface. The outer end opening of the screw hole and the one end opening of the through hole are aligned with each other. The connection block and the mounting block are further tightened by screwing a bolt inserted through the through hole from the other end opening to the one end opening into the screw hole with the supported surface and the supporting surface in contact with each other. It is fixed by joining.