JP2002277106A - Receiver tank integrated condenser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To save the space of a receiver tank integrated condenser furthermore and to skillfully solve a relation that the receiver tank is generally shorter than a header pipe and the pressure loss of refrigerant decreases as the cross-section thereof increases but the size is not reduced. SOLUTION: In the receiver tank integrated condenser, a recess 24 is formed at a part of a header pipe 5 in the longitudinal direction becoming the refrigerant outlet of the condenser 2 and the receiver tank body 30 is received in the recess 24 of the header pipe 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a condenser integrated with a receiver tank in which a condenser constituting a part of a cooling cycle and a receiver tank are integrated.

[0002]

2. Description of the Related Art Generally, in this type of heat exchanger,
Conventionally, a technique for integrally providing a receiver tank near a condenser, particularly near a header pipe serving as an outlet for a refrigerant of the condenser, in order to reduce installation space of the apparatus and to simplify installation of the apparatus. (For example, Japanese Patent Application Laid-Open No. 2-267478 and Japanese Utility Model Application Laid-Open No. 3-31266).

[0003] The first and second prior arts (JP-A-Heisei 2─)
No. 267478, Japanese Utility Model Application Laid-Open No. 3-31266)
However, in order to make the header pipe have the function of the receiver tank, the receiver tank is directly added to the header pipe.

[0004] However, in the first and second prior arts, the header pipe and the receiver tank are integrated not only in proximity but also in an integrated manner. As can be seen from the cross-sectional view of the receiver and the receiver tank, there is a disadvantage that the two circular members are connected and the lateral dimension of the capacitor is enlarged, and the space is not sufficiently reduced.

The invention disclosed in Japanese Utility Model Laid-Open No. 2-103667 has also been proposed. According to the present invention, the inside of the outlet side header pipe 13 is first and second through the chord portions 15, 15.
And the chord portions 15, 17
A penetrating pipe 18 is formed at 15 and communicates with the first pipe chamber 6 and the second pipe chamber 17, and the first pipe chamber 16 communicates with a plurality of refrigerant passages. The chamber 17 was a condenser with a built-in liquid receiver to which a liquid discharge pipe 19 was connected, and satisfied the demand for space saving.

[0006] However, only the header pipe in which two pipes having a substantially semicircular cross section are integrated is shown, and the pressure loss in the header pipe is large due to the decrease in the cross-sectional area. Further, Japanese Unexamined Patent Publication No. Hei 4-2274 has a configuration in which a modulator for storing excess refrigerant is connected to a condenser.
The invention of No. 36 was also proposed, but only the structure in which the receiver tank and the modulator were juxtaposed was shown, and it was insufficient to reduce the space.

[0007]

In the first place, the length of the receiver tank is generally shorter than the length of the header pipe, and the larger the cross-sectional area of the header pipe, the smaller the pressure loss of the refrigerant. Although it is advantageous, increasing the cross-sectional area is disadvantageous for the demand for downsizing the header pipe. The present invention was created while recognizing the relationship between the receiver tank and the header pipe.

That is, an object of the present invention is to provide a condenser integrated with a receiver tank in which not only the space is further reduced by recessing the header pipe but also the pressure loss is minimized.

[0009]

A condenser integrated with a receiver tank according to the present invention comprises a pair of header pipes arranged facing each other, a plurality of tubes communicating with the pair of header pipes, and a space between each of the tubes. A condenser including a fin interposed therein, and a receiver tank in which a desiccant is provided, and a refrigerant outlet channel chamber and a refrigerant for sending refrigerant from the refrigerant outlet channel chamber to one of the header pipes. A receiver passage, wherein the receiver tank includes a refrigerant inflow portion into which all of the refrigerant sent from the condenser flows, and a liquid refrigerant sending portion that sends out liquid refrigerant separated from gaseous refrigerant in the receiver tank to outside the receiver tank. And a recess is formed by recessing a part of the header pipe in the longitudinal direction, and at least a part of the main body of the receiver tank enters the recess. In that it is (claim 1).

[0010]

Therefore, according to the present invention, since a part of the header pipe has a concave part and a part for maintaining the same sectional area in the longitudinal direction of the header pipe, at least one part of the receiver tank main body is provided in the concave part. The portion can contribute to downsizing of the entry device, and the cross-sectional area of the header pipe where the recess is not formed is large, so that the pressure loss of the fluid can be suppressed to the minimum necessary.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 show an example of a receiver tank integrated capacitor according to the present invention. The receiver tank integrated capacitor 1 is assembled by connecting a capacitor 2 and a receiver tank 3 integrally. Have been.

The condenser 2 is formed in a thin and substantially rectangular shape, and has a pair of header pipes 4 and 5 arranged to face each other, and a plurality of heat exchangers communicating with the pair of header pipes 4 and 5. And a fin 7 interposed between the tubes 6.

The header pipes 4 and 5 are substantially cylindrical and have tube insertion plates 10a and 11a in which a number of insertion holes 8 into which the ends of the tubes 6 are inserted are formed, and tank plates 10b having an arc-shaped cross section. , 11b are overlapped in the middle with the partition plates 12, 13 interposed therebetween and joined together, and the upper and lower ends are closed with caps 15, 16. And inside the header pipes 4 and 5, there are flow passage chambers 20 to
23 is defined.

In the one header pipe 4, the flow path chamber 20 above the header pipe 4 constitutes an inlet portion of the refrigerant, and the flow path chamber 2
0, a refrigerant inlet pipe 36 is provided.
The coolant is supplied to the flow channel chamber 20 from 6.

In the other header pipe 5, the refrigerant outlet passage chamber 23 below it forms a refrigerant outlet, and the refrigerant from the upper end of the tank plate 11b constituting the header pipe 5 becomes the refrigerant outlet. The tank plate 11b is curved inward over the outlet channel chamber 23, and a concave portion 24 for holding the receiver tank 3 is provided in the curved portion. The recess 24 is formed by recessing a part in the longitudinal direction, and at the lower end thereof, a refrigerant delivery passage 25 for fixing a condenser-side joint 26 described below is opened. The side joint 26 is inserted and fixed.

The condenser-side joint 26 is a block-shaped one for detachably connecting the receiver tank 3, and is formed in a substantially elliptical shape.
The screw passages 28, 28 provided with the protrusions 7, 27 are formed in a protruding manner, and the communication passage 2 for inserting a connection protrusion 42 of the receiver tank side joint 32, which will be described later, approximately in the center thereof.
9 are drilled. The condenser-side joint 26 is fixed to the refrigerant delivery passage 25 of the header pipe 5 by so-called torch brazing, for example.

The receiver tank 3 is formed in a substantially elliptical cylindrical shape so as to fit into the concave portion 24 of the other header pipe 5 of the condenser 2 and has a substantially cylindrical body (receiver tank body) 30. An outlet cap 31 described below is fitted at the upper end of the body 30 and fitted with the receiver tank side joint 32 at the refrigerant inflow portion 46 at the lower end opening of the body 30, and a desiccant 33 and pipes 34 and 35 are disposed inside. I have. The outlet cap 31 and the receiver tank side joint 32
The O-ring (not shown) is fitted around the outer periphery of the
For example, a so-called electromagnetic crimping is performed by an electromagnetic force from the outside of the cylinder.

The outlet cap 31 is provided with a sight glass 37 for visually checking the amount of the refrigerant in the receiver tank 3, and a refrigerant outlet pipe 38 is formed so as to communicate with the pipe 35.

The receiver tank side joint 32 is formed in a block shape which is compatible with the capacitor side joint 26 of the capacitor 2 and is formed in a substantially elliptical shape, and screw holes 40, 40 are provided at both ends. Screw fixing part 4 provided
In addition to the projections 1 and 41, a connection projection 42 having a communication passage 43 inserted into the projection insertion hole 29 of the capacitor-side joint 26 is formed at the approximate center of the lower part. The coupling protrusion 42 of the receiver tank side joint 32 is inserted into the communication passage 29 of the capacitor side joint 26, and is fixed to the condenser side joint 26 with a screw. A communication hole 43 formed at the center of the connection protrusion 42 is provided with a pipe fitting hole 44 for inserting the lower end of the one pipe 34.
Are formed.

When the joint 26 on the condenser side and the joint 32 on the receiver tank side are connected in this manner, the communication passage 29 of the joint 26 on the condenser side and the communication passage 43 of the joint 32 on the receiver tank side communicate with each other. The condenser joint 26 and the receiver tank joint 32 constitute a refrigerant passage 45 connecting the condenser 2 and the receiver tank 3.

In the above configuration, in order to assemble the receiver tank 3 with the capacitor 2, the body 30 of the receiver tank 3 is aligned with the concave portion 24 of the header pipe 5 of the capacitor 2, and the connecting projection 42 of the receiver tank side joint 32 is connected with the capacitor The receiver tank 3 may be placed on the condenser joint 26 by inserting it into the communication passage 29 of the side joint 26, and the condenser joint 26 and the receiver tank joint 32 may be fixed by screws.

In the receiver tank integrated condenser 1 configured as described above, the high-pressure refrigerant gas flowing from the refrigerant inlet pipe 36 into the flow path chamber 20 of the one header pipe 4 communicates with the flow path chamber 20. The gas flows parallel to the inside of the tube 6 to reach the flow channel chamber 21 of the other header pipe 5, and from there, flows backward in the tube 6 communicating above the partition plate 13 to reach the flow channel chamber 22 of the header pipe 4, The gas flows through the tube 6 communicating with the flow channel chamber 22 toward the header pipe 5, and liquefies and collects in a refrigerant outlet flow channel chamber 23 serving as a refrigerant outlet.
The liquid refrigerant is sucked into the receiver tank 3 from the refrigerant outlet channel chamber 23 through the refrigerant passage 45 formed between the condenser-side joint 26 and the receiver-tank-side joint 32, and the pipe 34, the desiccant 33, and the pipe It is sucked up from the outlet pipe 38 via 35.

However, in the receiver tank integrated type capacitor 1, as described above, the receiver tank 3 is detachably connected to the capacitor side joint 26 provided on the header pipe 5 of the capacitor 2, so that the receiver tank 3 can be removed. Yes, maintenance is improved. Since the receiver tank 3 is configured to be mounted and connected on the capacitor-side joint 26 of the capacitor 2, the receiver tank 3 can be easily assembled and
Since the receiver tank 3 is held along the recess 24 provided in the header pipe 5, the entire device can be downsized. A refrigerant passage 45 connecting the refrigerant outlet passage chamber of the condenser 2 and the inlet side of the receiver tank 3 by the condenser side joint 26 and the receiver tank side joint 32.
, It is possible to eliminate the external piping which has been a problem in the past.

Next, an example of a receiver tank integrated capacitor according to another invention will be described with reference to FIG. 4 and FIG. However, components having basically the same configuration as those of the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted. Hereinafter, only different points will be described.

This embodiment is different from the above-described embodiment in that the tank plates 15 of the header pipes 4 and 5 are formed in a cylindrical shape, and a block-shaped capacitor-side joint 26A is formed on the side wall.
And the capacitor-side joint 26A is provided above the receiver tank 3 corresponding to the capacitor-side joint 26A.
The receiver tank side joint 32A conforming to the above is provided.

The condenser-side joint 26A and the receiver-tank-side joint 32A have a part of a side wall corresponding to the refrigerant outlet passage chamber 23 serving as a refrigerant outlet of the header pipe 5 of the condenser 2 and an upper side wall of the receiver tank 3 respectively. And a communication passage 52 communicating with the refrigerant outlet passage chamber 23 through a communication hole (refrigerant delivery passage) 51 provided in a side wall of the header pipe 5 therein, and a receiver tank 3. The provided communication path 53 is formed. The condenser-side joint 26A and the receiver-tank-side joint 32A are screwed via bolts 55, so that the receiver tank 3 is connected to the condenser 2.

In this connection, the communication hole 51 of the header pipe 5 of the capacitor 2, the communication passage 52 of the capacitor-side joint 26 A, and the communication hole 53 of the receiver tank 3 communicate with each other, thereby connecting the capacitor 2 and the receiver tank 3. A refrigerant passage 56 is formed.

However, in the receiver tank integrated capacitor 1, the receiver tank 3 is attached to and detached from the capacitor-side joint 26A provided in the header pipe 5 serving as the outlet of the capacitor 2, as in the first embodiment. Because they are freely connected, they can be removed, and maintenance is improved. Since the receiver tank 3 is attached from the side of the capacitor-side joint 26 of the capacitor 2, the receiver tank 3 can be easily assembled.
Further, since the refrigerant passage 56 connecting the outlet side of the condenser 2 and the inlet side of the receiver tank 3 is formed between the condenser side joint 26A and the receiver tank side joint 32A, the external piping which has been a problem in the past is eliminated. It is possible to

The header pipe 5 may have a two-part structure in which two tank plates are joined.

[0031]

As described above, according to the present invention,
The device can be easily assembled to the vehicle body by integrating it with the condenser of the receiver tank. Further, since at least a part of the receiver tank main body enters into the recess formed in the header pipe, the amount of protrusion of the receiver tank from the condenser can be reduced, and the apparatus can be downsized. The loss can be minimized.

[Brief description of the drawings]

FIG. 1 is a perspective view of a receiver tank integrated capacitor according to a first invention.

FIG. 2 is a sectional view of a main part of the above.

FIG. 3 is an exploded perspective view of a main part of the above.

FIG. 4 is a perspective view of a main part of a receiver tank integrated capacitor according to a second invention.

FIG. 5 is a sectional view of a main part of the above.

[Brief description of reference numerals]

 DESCRIPTION OF SYMBOLS 1 Condenser integrated with receiver tank 2 Condenser 3 Receiver tank 4, 5 Header pipe 6 Tube 7 Fin 24 Concave part 25 Joint connection part 26, 26A Condenser side joint 32, 32A Receiver tank side joint 33 Desiccant 45, 56 Refrigerant passage

Claims (1)

[Claims] 1. A condenser comprising a pair of header pipes arranged facing each other, a plurality of tubes communicating with the pair of header pipes, fins interposed between the respective tubes, and a desiccant therein. A receiver tank disposed, and one of the header pipes has a refrigerant outlet passage chamber and a refrigerant delivery passage for sending refrigerant from the refrigerant outlet passage chamber, and the receiver tank is sent from the condenser. A refrigerant inflow part into which all of the refrigerant flows in, and a liquid refrigerant sending part that sends out the liquid refrigerant separated from the gaseous refrigerant in the receiver tank to the outside of the receiver tank, and a part of the header pipe in a longitudinal direction. Wherein a concave portion is formed by recessing at least a part of the receiver tank main body into the concave portion.