JPH04131667A - Condenser - Google Patents

Abstract

PURPOSE:To obviate a liquid receiver as an independent constituting part and improve service property upon dismantling service of an air-conditioning cycle by connecting the main body of the liquid receiver detachably to and integrally with one of header pipes so as to be neighbored to the header pipe. CONSTITUTION:Accumulated refrigerant solution flows through a refrigerant passage 2n from an outlet side union if, provided below an outlet side header pipe 1b, and a refrigerant passage hole 2c, provided below the ear 2k of the main body 2a of the liquid receiver, then, flows into the inner part of a cylindrical body 2a or the tank of the liquid receiver main body 2a through a refrigerant passage hole 2p, provided above the ear 2k of the liquid receiver. The refrigerant, entered the liquid receiver main body 2a, passes through drying agent 2b and the refrigerant solution is accumulated at the lower part of the liquid receiver main body 2a whereby gas is separated from liquid. The separated refrigerant solution is sucked up by a suck-up pipe 2d, then, flows through a connecting pipe and is circulated through an evaporator. The liquid receiver main body 2a is connected detachably to and integrally with the outlet side header pipe 1b of a condenser through bolts.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a condenser, and more particularly to a condenser with an integrated liquid receiver constituting an air conditioner for an automobile.

[Conventional technology]

The structure of the condenser and liquid receiver in a conventional automobile air conditioning system is as described in Japanese Utility Model Application Publication No. 58-49167, in which the condenser and liquid receiver are each installed as independent devices. In the condenser, the heat radiating parts located on both sides of the meandering tube are sandwiched by a pair of side boats, and a bracket that holds the liquid receiver in a predetermined position is protruded from one of the side ports. The liquid receiver was fixed with this bracket, and the liquid receiver and the outlet pipe protruding from the heat radiating part were connected by a pipe.

Furthermore, as described in Japanese Utility Model Application Publication No. 2-13954, the conventional structure is that in a condenser in which a pair of header pipes are connected through a plurality of refrigerant tubes, a header pipe on the refrigerant outlet side and a liquid receiver are connected. The main body was integrally molded, and the liquid receiver was placed adjacent to the header pipe.

[Problem to be solved by the invention]

The conventional technology described in Japanese Utility Model Application Publication No. 58-49167 arranges a condenser and a liquid receiver as independent devices,
The structure is such that the liquid receiver is held in relation to the condenser by a bracket installed on the side of the condenser, and each is connected to a pipe.
The structure is such that they are connected by . Therefore, no consideration was given to reducing size and weight and improving productivity by integrating parts, and there were problems in terms of secondary assembly work, size and weight reduction, and space saving.

In order to solve the above problem, the applicant has
No. 818 (filed on April 5, 1999) describes a pair of header pipes arranged at intervals, a plurality of heat exchange pipes connecting these header pipes, and these heat exchange pipes. In a condenser having fins disposed between pipes, we have proposed a condenser with an integrated liquid receiver, in which a liquid receiver is integrally connected to either one of the header pipes. This proposed invention reduces the number of parts, improves productivity, and makes it possible to reduce size, weight, and space.

The present invention further improves the prior invention and further improves the serviceability of a condenser with an integrated liquid receiver.

In other words, when disassembling an air conditioner cycle, there are cases where you only want to replace the liquid receiver, such as replacing the desiccant.
In the prior invention, the liquid receiver is integrated with the condenser, so if the liquid receiver is to be replaced, the condenser body must also be replaced. This makes replacement parts expensive and is uneconomical.

In addition, the conventional technology described in Utility Model Application Publication No. 13954/1997 is based on the integrated molding of the header pipe and the liquid receiver body.
- Solve the problem of the conventional technology described in Publication No. 49167,
Although the number of parts is reduced, making it possible to reduce the size and weight and save space, this conventional technology is also uneconomical and service-intensive because it is not possible to replace only the liquid receiver, as in the prior invention mentioned above. There was a problem with sexuality.

An object of the present invention is to provide a simplified air conditioner for an automobile by eliminating a liquid receiver as an independent component, and also to improve serviceability during disassembly of an air conditioner cycle, and a method for manufacturing the same. , and a liquid receiver.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a pair of header pipes arranged at intervals, a plurality of heat exchange pipes connecting these header pipes, and a plurality of heat exchange pipes arranged between these heat exchange pipes. in a condenser having fins, the body of the receiver being adjacent to one of the header pipes;
They are removably connected together.

Preferably, the liquid receiver main body has a sealing means at a connection part with the refrigerant outlet of the header pipe, and the sealing means is fixed by being integrally connected to the header pipe.

Preferably, the upper lid of the liquid receiver main body is fixed by bolts, and the desiccant inside the liquid receiver can be taken in and taken out.

More preferably, a longitudinal convex portion is provided on the outer periphery of the liquid receiver body, and a mounting bracket for mounting a safety component such as a fusible plug and a condenser on a vehicle is installed on this convex portion.

Preferably, the liquid receiver body and the header pipe are integrated via a mounting bracket that allows the liquid receiver body to be tilted with respect to the axis of the header pipe.

Furthermore, in order to achieve the above object, the present invention provides the above method for manufacturing a condenser, in which the liquid receiver body is integrally coupled to the header pipe by bolting.

Furthermore, in order to achieve the above object, the present invention provides a pair of header pipes arranged at intervals, a plurality of heat exchange pipes connecting these header pipes, and a heat exchange pipe between these heat exchange pipes. A liquid receiver used in a condenser having fins provided therein includes a liquid receiver body adjacent to one of the header pipes and detachably coupled to the body.

The present invention also provides a liquid receiver having a liquid receiver body containing a desiccant, in which the liquid receiver body is removably connected to one body adjacent to one of the header pipes of the condenser. be.

[Effect]

By connecting the liquid receiver body adjacent to one of the header pipes of the condenser in a removable manner, for example, by tightening bolts, the used liquid receiver body can be removed during disassembly service, and a new liquid receiver can be installed. It is possible to attach the main body, and there is no need to replace the entire condenser when replacing the liquid receiver as in the past.

In addition, by identifying the upper cover of the liquid receiver body by tightening bolts and installing the desiccant inside the liquid receiver so that it can be taken out and put in, it is possible to replace only the desiccant, making the replacement work even easier.

By arranging a sealing means at the connection between the liquid receiver body and the refrigerant outlet of the header pipe, and fixing the sealing means by integrally connecting the liquid receiver body and the header pipe, the header pipe and the liquid receiver body can be integrated. At the same time, it is possible to ensure sealing between the two, improving work efficiency and productivity.

When installing safety parts such as fusible plugs and condensers on the liquid receiver body, by providing a convex part on which a bracket can be installed, safety parts can be installed while making refrigerant passage holes easy to install, and it also saves space for mounting on various vehicles. The main body of the liquid receiver can be installed in the tank, improving common use and productivity.

By making it possible to install the liquid receiver body at an angle with respect to the axis of the header pipe, the liquid receiver body can be installed in various mounting spaces of vehicles, improving workability and common use. .

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

In FIGS. 1 and 2, a condenser 1 includes a pair of header pipes la on the refrigerant inlet side and the refrigerant outlet side made of aluminum and spaced apart from each other.

1b, and a plurality of heat exchange pipes 1c of a predetermined length made of aluminum are arranged in parallel between the header pipes 1a and 1b, and the ends of the heat exchange pipes 1c are brazed to the header pipes 1a and 1b. It is fixed by etc. Heat exchange fins 1d are arranged and fixed between the heat exchange pipes 1c. An inlet union 1e is fixed to the upper end of the refrigerant introduction side header pipe 1a, a blind cover (not shown) is fixed to the lower end by brazing, and a blind cover 1k (one is fixed to the both ends of the refrigerant outlet side header pipe 1b). (not shown) is fixed by brazing. Further, below the header pipe 1b, an outlet side union 1f is fixed for sending refrigerant to the main body 2a of the liquid receiver 2 which is formed separately and is integrally coupled. Furthermore, mounting brackets Ig and 1m made of aluminum are fixed to two locations above and below the header pipe 1b by brazing or the like for integrally joining the liquid receiver body 2a.

The body 2a of the liquid receiver 2 is a cylindrical body as shown in FIGS. 3 and 4, and the lower end of the body 2a is connected to the lower lid 2.
A sight glass body 2h and a sight glass 2g are fixed to the opening at the upper end of the body 2a. A suction pipe 2d hanging down inside the body 2a is connected to the sight glass body 2h, and two drying side receivers 2C are attached to the suction pipe 2d, and particulate desiccant 2b is loaded between them.

Further, the body 2a has longitudinal ears 2j, 2 on its outer periphery.
k, and bolt holes 21.k are provided on the upper end surfaces of the ears 2j, 2.
The sight glass body 2h is fixed to the body 2a by attaching bolts 3 at two locations to the length 2m. In addition, the above-mentioned installation is a bracket) 1g, 1m is the ear part 2k on the body 2a.
is clamped and fixed with bolt 4. Furthermore, a mounting bracket 5 for mounting the condenser 1 on a vehicle is provided on the side surface of the ear portion 2j.
is attached with bolt 6.

FIG. 5 shows details of the structure of the connection between the refrigerant outlet of the header pipe 1b and the body 2a. The ear portion 2k of the body 2a is provided with a refrigerant passage portion 2n and a refrigerant passage hole 2o for circulating the refrigerant from the header pipe 1b of the condenser 1 into the interior of the body 2a.
2p is formed. The refrigerant passage portion 2n is located below the bolt hole 2m, and its lower end is covered with a blind plug 2f.

The refrigerant passage hole 2p is drilled from the ear 2j on the opposite side, and a fusible frame 21 is attached to the resulting hole in the ear 2j as a safety measure by utilizing the thickness of the ear 2j.

The outlet side union 1f is fixed to the header pipe 1b by brazing or the like, and the refrigerant passage hole 20 is formed at a position that fits the outlet side union 1f. An O-ring 11 is fitted around the outlet side union 1f, and the entrance of the refrigerant passage hole 2o is enlarged to receive this O-ring 11.

The aforementioned mounting bracket 1m is also fitted around the outlet side union 1f.

The lower lid 2e of the body 2a1, the side glass body 2h, and the blind plug 2f are all made of aluminum.

When assembling the liquid receiver 2, the lower cover 2e1 and the blind plug 2f are connected to the body 2a by brazing, the O-ring 11 is attached to the outlet side union 1f of the refrigerant outlet side header pipe 1b of the condenser 1, and the ear part While inserting the refrigerant passage hole 2o so that it is aligned with the refrigerant passage hole 2o, fix it with the bolt 4. Further, the mounting bracket 5 is attached with a bolt 6 to the ear portion 2j of the liquid receiver body 2a that is integrally coupled.

In the condenser 1 and liquid receiver 20 assembly described above, gaseous refrigerant pumped by a compressor (not shown) is introduced from the inlet side union part 1e of the inlet side header pipe 1a of the condenser 1, and heat exchange is performed. The heat exchange fins 1 are fed under pressure to the pipe 1c.
The refrigerant heat-exchanged by step d changes into liquid refrigerant and accumulates in the outlet header pipe 1b. The accumulated liquid refrigerant is transferred to the outlet side union 1 provided at the lower part of the outlet side header pipe 1b.
f and the refrigerant passage hole 2n provided at the lower part of the ear part 2 of the receiver body 2a, and flows through the refrigerant passage hole 2p provided at the upper part of the receiver ear part 2 to the body. 2a, that is, into the tank of the liquid receiver main body 2a.

The refrigerant that has flowed into the receiver body 2a passes through the desiccant 2b, and the liquid refrigerant accumulates in the lower part of the receiver body 2a, where it is separated into gas and liquid. The separated liquid refrigerant is sucked up by the suction pipe 2d, flows out into a connecting pipe (not shown), and is circulated to the evaporator.

In this embodiment configured as described above, the liquid receiver main body 2a is removably connected to the outlet header pipe 1b of the condenser 1 by bolting, so that the number of parts is reduced, resulting in a smaller size, lighter weight, and space saving. In addition, since the refrigerant passage portion is joined via the O-ring 11,
At the same time as the header pipe 1b and the receiver main body 2a are integrated, the sealability of the joint is ensured, improving workability and productivity. Further, since the contact portions between the outlet header pipe 1b, the mounting brackets Ig and 1m, and the liquid receiver body 2a are all made of the same aluminum material, corrosion resistance is improved.

Furthermore, in this embodiment, the liquid receiver main body 2a can be removed during disassembly service and only the liquid receiver main body 2a can be replaced. The condenser 1 can therefore be reused, allowing for economical servicing.

Also, regarding the workability when replacing the desiccant 2b,
Simply remove the two bolts 3 fixing the sight glass body 2h without removing the liquid receiver 2, and the desiccant 2
b can be taken in and out, and only the desiccant 2b can be replaced, which further contributes to improving work efficiency.

Furthermore, in this embodiment, since the ear portion 2j is set on the body 2a, the refrigerant passage hole 2p is machined at one time through the ear portion 2j, and the thickness of the hole is used to fill the hole in the ear portion 1j as a blind plug. By installing the fusible plug 21, the refrigerant passage hole 2p can be easily drilled, and at the same time, the fusible plug 21 can be installed as a safety measure.

In addition, since the mounting bracket 5 for mounting the integrally connected condenser 1 on the vehicle is installed on the ear part 2j with bolts 6, the condenser can be installed by simply changing the installation position of the mounting bracket 5 with respect to the mounting position on the vehicle. It becomes possible to install an integrated condenser 1 having the same specifications without changing the structures of the liquid receiver 1 and the liquid receiver 2.

Therefore, it can be shared and contributes to improved productivity.

Another embodiment of the present invention will be described with reference to FIG.

In this embodiment, the receiver body is attached to the header pipe by changing its position relative to the header pipe.

In the above embodiment, the main body 2a of the condenser 2 is installed parallel to the header pipe 1b of the condenser 1, so if the condenser 1 is installed diagonally due to the installation space of the vehicle, the receiver main body 2a is similarly installed diagonally, and as a result, due to the gas-liquid separability of the liquid receiver main body 2a, the liquid refrigerant that accumulates inside the tank of the liquid receiver main body 2a accumulates obliquely. Therefore, the gas refrigerant is easily sucked into the suction pipe 2d. Therefore, in this embodiment, the upper mounting bracket 1g of the outlet side header pipe 1b is replaced with a mounting bracket 1h having a long groove shaped like an arc with the outlet side union 1f as the center, as shown in FIG. By fixing the mounting bracket 1h to the ear part 2 by inserting the liquid receiver body 2a into the outlet side union 1 with respect to the condenser 1 installed diagonally.
Attach in the vertical direction rotated around f. The lower mounting bracket 1n has a shape having a recess that matches the inclination direction of the header pipe 1b. As a result, in this embodiment, the liquid receiver body always faces in the vertical direction, so that the gas-liquid separation property is improved.

In the above embodiment, the liquid receiver main body 2a is joined at a position right beside the outlet header pipe 1b of the condenser 1 at almost the same height as the condenser 1. -84
Similar to No. 818, the height position can be adjusted arbitrarily to create a shape that suits the surrounding situation, and the angular position can also be arbitrarily adjusted with respect to the central axis of the lead-out header pipe to achieve the same purpose. You can also.

〔Effect of the invention〕

According to the present invention, by combining the condenser and the liquid receiver into one body, it is possible to obtain effects such as reduction in size and weight, space saving, and improvement in productivity, and also because the liquid receiver can be attached and detached.
Service work can be handled by replacing only the liquid receiver without replacing the entire condenser, which enables low-cost replacement and improves serviceability and workability.

Furthermore, since the desiccant can be put in and taken out of the liquid receiver, it becomes easier to replace the desiccant.

Further, since the sealing means at the connection between the receiver body and the refrigerant outlet of the header pipe is fixed at the same time as they are integrally connected to ensure sealing performance, workability and productivity are improved.

In addition, the protrusion provided on the receiver body makes it easy to process the refrigerant passage hole and install the fusible plug, and since the mounting bracket is installed on the protrusion, there is no need to change the installation position of the mounting bracket. It can accommodate various vehicle mounting spaces,
Workability and sharability are improved.

By making it possible to install the liquid receiver body at an angle with respect to the axis of the header pipe, the liquid receiver body can be installed in accordance with the installation space of various vehicles, improving workability and common use. do.

[Brief explanation of drawings]

FIG. 1 is a front view of a condenser according to an embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is an exploded perspective view of a liquid receiver, and FIG. 4 is an exploded perspective view of a liquid receiver. FIG. 5 is an enlarged sectional view of a refrigerant passage junction, and FIG. 6 is a side view of a condenser according to another embodiment of the present invention. Explanation of symbols 1...Condenser 1a...Inlet side header pipe 1b...Outlet side header pipe 1c...Heat exchange pipe 1d...Heat exchange fin 1f...Outlet side union (junction) ) 1g, 1m...Mounting bracket lh, in...Mounting bracket 11...O ring (sealing means) 2...Liquid receiver 2a...Body (liquid receiver body) 2b...Drying Agent 21... Fusible frame 2j, 2k... Ear part (convex part) 2n... Refrigerant passage 2o, 2p... Refrigerant passage hole 5... Mounting bracket

Claims (8)

[Claims] (1) A condenser that has a pair of header pipes arranged at intervals from each other, a plurality of heat exchange pipes connecting these header pipes, and fins arranged between these heat exchange pipes. 2. A condenser according to claim 1, wherein a main body of a liquid receiver is adjacently and removably connected integrally with one of the header pipes. (2) In the condenser according to claim 1, the liquid receiver body has a sealing means at a connection part with the refrigerant outlet of the header pipe, and the sealing means is fixed by being integrally connected with the header pipe. A condenser featuring: (3) The condenser according to claim 1, wherein the upper cover of the liquid receiver main body is fixed by bolts, and the desiccant inside the liquid receiver is installed so that it can be taken out and taken out. (4) In the condenser according to claim 1, a longitudinal convex portion is provided on the outer periphery of the liquid receiver body, and a safety component such as a fusible plug and a condenser are mounted on the vehicle. A condenser characterized by having a bracket installed. (5) The condenser according to claim 1, wherein the liquid receiver body and the header pipe are integrated via a mounting bracket that allows the liquid receiver body to be tilted with respect to the axis of the header pipe. vessel. (6) The method of manufacturing a condenser according to claim 1, wherein the liquid receiver body is integrally connected to the header pipe by bolting. (7) A condenser that has a pair of header pipes arranged at intervals from each other, a plurality of heat exchange pipes connecting these header pipes, and fins arranged between these heat exchange pipes. A liquid receiver for use in a liquid receiver, characterized in that the liquid receiver has a liquid receiver body adjacent to one of the header pipes and detachably coupled to the body. (8) A liquid receiver having a liquid receiver body containing a desiccant, characterized in that the liquid receiver body is adjacent to one of the header pipes of the condenser and is removably connected to the receiver body. Receiver.