KR20010040265A - Receiver tank - Google Patents

Abstract

In the receiver tank 2 connected to the heat exchanger 1, in the receiver tank, an attachment portion 28 having a diameter smaller than the diameter of the main body portion 21 of the receiver tank is formed, and the attachment portion 28 is provided. It is a receiver tank of the structure which attaches attachment members 50, such as a bracket, to it and connects to other members, such as a header pipe of a heat exchanger. In addition, the attachment convex portion 28 penetrates through the inside of the main body of the receiver tank. The attachment convex portion 28 is a receiver tank in which an end portion is formed in an open shape, and a control member such as a pressure switch 40 is provided in the opening portion 28a.

Description

Receiver tank {RECEIVER TANK}

In general, a refrigeration cycle for automobiles is known as a heat exchange medium flocculating device, for example, a lamination type heat exchanger, and the heat exchanger is connected with a receiver tank for preventing a decrease in cooling capacity.

This receiver tank is an apparatus for removing gas (gas) refrigerant | coolants which remain uncondensed in the liquid refrigerant liquefied by the heat exchanger, and circulating only the heat exchange medium of a liquid phase phase in a cooling cycle.

In this way, when the receiver tank is connected, the heat exchange medium is a liquid single phase heat exchange medium in which gas and liquid are separated by the receiver tank and do not include a gas medium. In addition, the receiver tank has its internal volume set to a predetermined amount so that a sufficient amount of liquefied refrigerant can be stored.

Therefore, the receiver tank ensures a stable amount of refrigerant circulation at all times, despite changes in external environmental conditions, operation settings by the user, and the like, thereby preventing deterioration in cooling capacity and the like.

Moreover, this receiver tank is equipped with a filter, a desiccant, etc., and by this function, the foreign material and water in a medium are removed, and the heat exchange medium can be circulated through a clean state.

In this type of receiver tank, when the high pressure side pressure of the heat exchanger body or the refrigeration cycle unit of the receiver tank body becomes abnormally high, an available electric appliance, a pressure switch, etc., which release the refrigerant to the atmosphere The control member which is a Relief Valve of this is provided.

For example, in the invention described in JP-A-8-219590, a structure in which a receiver tank is integrally formed in a head pipe of a heat exchanger is described. In other words, the receiver tank is integrally joined to the header pipe of the heat exchanger by means such as a back soldering portion and a caulking by a caulking strip to the header pipe of the heat exchanger. . In addition, according to the invention disclosed in Japanese Unexamined Patent Publication No. 8-219590, the usable electronic body is used as a sealing means for the receiver tank, and the bolt-shaped main body constituting the electric field is formed by the O-ring of the receiver tank main body. It is mounted on the cylinder installed at the bottom.

In addition, the invention disclosed in Japanese Patent Application Laid-Open No. 9-53868 discloses a desiccant container filled with a desiccant, which is attached to an end lid that closes an upper opening of a receiver tank, to which the desiccant container is suspended. The head part is provided with a pressure switch for detecting the refrigerant pressure and an available electric field.

In addition, the invention described in Japanese Patent Application Laid-Open No. 9-170854 discloses that a receiver tank and a header pipe are independently provided so that an entrance through which a media outlet of the receiver tank and the header pipe is connected to each other is formed. The connecting block and the refrigerant passage are connected to each other so as to be connected through the attachment block.

In addition, Japanese Unexamined Patent Publication No. 9-217967 discloses that a connection through hole between the receiver tank and the header pipe is connected to each other by a connection block, and is connected to the heat exchanger at the top of the receiver tank. A coupling device is described. The coupling device includes a receiving bracket having a coupling recess fixed to an outer surface of the other end of the header pipe and a tip opening of a tubular receiver tank constituting the receiver tank. The closing body has a lid body and a hook strip having the lid body projecting radially outward from the outer circumferential edge thereof, and the tip end portion being a joining protrusion bent in the axial direction from the receiver tank. One end of the header pipe and the root of the receiver tank are engaged with the other end of the header pipe and the front end of the case by engaging the engaging protrusion of the hook strip with the engaging recess of the receiving bracket. It is configured to combine the ends.

However, as invented in Japanese Unexamined Patent Publication No. 8-219590 or Japanese Unexamined Patent Publication No. 9-53868, control of a pressure switch, an electric appliance, or the like is provided in an opening having a diameter equal to the diameter of the receiver tank body portion. When the member is attached, it becomes difficult to attach the control member so as to penetrate the inside of the main body. For example, in the invention disclosed in Japanese Unexamined Patent Publication No. Hei 8-219590, since the potting itself itself also functions as a sealing means of the receiver tank lower end portion, the main body shape before use is not made large so as to match the receiver tank opening. Can not be done. In addition, in the invention disclosed in Japanese Unexamined Patent Publication No. Hei 9-53868, since the soluble paste is attached to the head portion of the desiccant container suspended from the receiver tank, the structure of the head portion is complicated.

In addition, as in the invention described in Japanese Unexamined Patent Publication No. 8-219590 and Japanese Unexamined Patent Publication No. Heisei 9-53868, if the header pipe and the receiver tank of the heat exchanger are integrally formed by a caulking script or the like, Since the soldering area is large, there is a problem in that loss at the time of poor soldering is large. In addition, it is necessary to take out a dryer or a filter, which is a functional part in the receiver tank, one by one, and this causes a problem of complicated operation during storage or replacement of these functional parts.

Further, in the invention described in JP-A-9-170854, the pressure switch is attached in a state of protruding to the attached block, which causes a problem that the pressure switch is disturbed when the vehicle body is mounted.

In addition, as shown in Fig. 6, in consideration of the vibration applied when the vehicle body is mounted, in the invention described in JP-A-9-170854, the receiver tank 2 and the header pipe 6 are spaced apart from each other. While connecting by 80, a belt 81 is mounted between the receiver tank 2 and the header pipe 6, and the receiver tank 2 is stably coupled to the header pipe 6 of the heat exchanger. Doing.

However, when the belt 81 between the receiver tank 2 and the header pipe 6 is mounted, the belt 81 becomes larger in diameter than the outer circumferential diameter of the receiver tank 2, so that it is outward from the diameter of the main body of the receiver tank. There was a problem in that it protruded, which hindered the installation in a limited vehicle range.

In addition, the coupling device of the invention described in JP-A-9-217967 discloses a bracket having a coupling recess constituting the coupling device, although it does not protrude outward from the diameter of the main body of the receiver tank; There is a need to form a lid body or the like coupled to the bracket, which causes a problem that the formation of the coupling device is difficult.

Therefore, in view of the above problems, the present invention can connect the receiver tank to other members such as a header pipe without protruding the attachment member such as a bracket from the receiver tank main body. It is an object to provide an easy receiver tank.

The present invention relates to a receiver tank for use in a refrigeration cycle for automobiles.

1 is a front view of a heat exchanger and a receiver tank, according to an embodiment of the present invention.

2 is a side view of a heat exchanger and receiver tank, in accordance with an embodiment of the present invention.

3 is a partial longitudinal section of the receiver tank according to an embodiment of the present invention.

4 is a plan view of a heat exchanger and a receiver tank according to the first embodiment of the present invention.

FIG. 5 is a partial cross-sectional view taken along the X-X arrow of FIG. 2 according to the second embodiment of the present invention. FIG.

6 is a plan view showing a coupling structure of a heat exchanger and a receiver tank according to a conventional example.

The invention according to the first claim of the present invention is a receiver tank connected to a heat exchanger to store a liquid refrigerant therein, and to discharge the liquid refrigerant and to continuously supply the same.

It is a receiver tank of the structure which forms the attachment part of a diameter smaller than the diameter of the main-body part of a receiver tank in the said receiver tank, and attaches attachment members, such as a bracket, to the said attachment part, and connects to other members, such as a header pipe of a heat exchanger. .

Thus, if the attachment part of diameter smaller than the diameter of a receiver tank main part is formed, when attaching attachment members, such as a bracket, to this attachment part, the contacted part will not protrude from the outer periphery of a receiver tank, but a heat exchanger and a receiver tank Since the can be connected, the receiver tank can be connected to the other member without being obstructed at the time of mounting the vehicle body having a limited installation range.

The invention according to the second claim of the present invention is a receiver tank connected to a heat exchanger to store a liquid refrigerant therein, and to discharge and continuously supply the liquid refrigerant,

It is a receiver tank of the structure in which the attachment convex part of diameter smaller than the diameter of the main body part of a receiver tank is formed in the edge part of the said receiver tank.

In this way, if the attachment convex portion having a diameter smaller than the diameter of the receiver tank body portion is formed, the attachment member becomes larger than the diameter of the main body portion by attaching the abutting portion of the attachment member such as a bracket or the belt portion to the attachment convex portion. The receiver tank can be connected to the heat exchanger without the member protruding from the receiver tank, and the heat exchanger and the receiver tank can be connected without expanding the installation range.

In addition, since the receiver tank is stably connected to the heat exchanger by a bracket or the like, it is possible to improve the seismic resistance.

In the invention described in claim 3 of the present application, in the invention according to claim 2, the attaching convex portion is a receiver tank having a configuration that penetrates through the inside of the main body of the receiver tank.

In this way, when the attachment convex portion penetrating the inside is formed, it is possible to install a leaf valve such as a pressure switch on the attachment convex portion, and it is easy to attach the control member without providing a release passage or the like separately. Done.

In the invention described in claim 4 of the present application, in the invention according to claim 2, the receiver convex portion has an end portion formed in an open shape, and a receiver tank having a configuration such that a control member such as a leaf valve is provided in the opening. to be.

When a control member such as a leaf valve is attached to the opening of the attachment convex portion formed with a diameter smaller than the diameter of the main body portion, the control member is fixed to the attachment convex portion, and the attachment of the control member is performed without providing a release passage or the like separately. It becomes easy.

Next, the specific example of this invention is described based on drawing.

The receiver tank 2 of this example is used for the automobile air conditioner installed in the engine room of an automobile, and is provided so that the refrigerant | coolant condensed by the condenser of the air conditioning apparatus is temporarily stored.

1 is a front view of the heat exchanger 1 and the receiver tank 2. 2 is a side view of the heat exchanger 1 and the receiver tank 2.

As shown in FIG. 1, the heat exchanger 1 is alternately stacked with a plurality of flat tubes 4 and wave formed fins 5. Each end of each of the stacked flat tubes 4 and 4 is inserted into and connected to the tube insertion holes 8 and 8 of the header pipes 6 and 7, respectively. On the upper end side and the lower end side of the laminated tube 4, side plates 9 having a U-shaped cross section are provided. The opening of the upper and lower ends of the header pipes 6 and 7 is closed by the cap 10. The receiver tank 2 is connected to one header pipe 6, and the other header pipe 7, which is not connected to the receiver tank 2, has an inlet coupler 12 and an outlet pipe ( 13) is installed. In addition, the header pipe 6 connected to the receiver tank 2 is formed with an outlet and an inlet not shown for flowing through the heat exchange medium.

3 is a partial longitudinal side view showing the internal structure of the receiver tank.

As shown in FIG. 3, the receiver tank includes an upper chamber 26 and a lower chamber 27 partitioned into a desiccant layer 25 and a desiccant layer 25 for removing moisture in the refrigerant inside the tank member 21. And a suction pipe 24 that penetrates the desiccant layer 25 and sucks the refrigerant from the lower chamber 27 into the upper chamber 26.

In the receiver tank 2 of the present example, an attachment convex portion 28 having a diameter smaller than the diameter of the tank member 21 is formed above the upper chamber 26. This attachment convex part 28 is formed in the opening shape which penetrates and connects with the tank member 2 inside. The pressure switch 40 is attached to the opening part 28a of this attachment convex part 28.

In addition, the upper part of the suction pipe 24 is provided with a connecting through member 29 which penetrates through the opening of the attachment convex part 28, and the suction member 24 is attached to the connecting member 29. The discharge hole 29a which discharge | releases the refrigerant sucked up from the inside into the tank member 2 is formed.

The lower end of the tank member 2 and the suction pipe 24 is connected with a connector 3 for connecting the receiver tank 2 and the header pipe 6 to each other.

The connector 3 has a through flow passage 31 through which the outlet of the header pipe 6 and the suction pipe 24 connect, and a through flow passage 32 through which the inlet of the header pipe 6 is connected. Is formed.

Therefore, the coolant that flows through the heat exchanger 1 and cools down flows from the outlet of the header pipe 6 through the through passage 31 of the connector, is sucked up into the suction pipe 24, and the connecting through member 29 (2) flows into the upper chamber (26) inside the tank member (21) from the discharge hole (29a), passes through the desiccant layer (5), dehydrates, and is stored in the lower chamber (27).

Then, it flows through the through flow path 32 of the connector 3 and flows through the heat exchanger 1 again from the inlet of the header pipe 6 to remove moisture, foreign matter, etc. in the coolant cycle, The refrigerant flows smoothly.

The pressure switch 40 attached to the opening 28a of the attachment convex portion 28 provided on the upper part of the receiver tank 2 of this example opens the refrigeration cycle when the pressure becomes higher than the set value, thereby ensuring the safety of the refrigeration cycle. have.

The header pipe 6 and the receiver tank 2 of the heat exchanger are connected to each other by a connector 3 so as to be connected therethrough. However, due to the vibration applied when the vehicle body is mounted, the connector portion deteriorates. In some cases, it is difficult to maintain the connection strength.

In this case, generally, the upper part of the receiver tank 2 and the header pipe 6 are connected by attachment members 50, such as a bracket, and the receiver tank 2 is supported by two points of a bracket and a connector, and seismic strength is improved. Enhancing structures can be considered.

4 is a first specific example of the present invention, and is a plan view showing a state in which the receiver tank 2 is connected to the heat exchanger 1 by the attachment member 50.

As shown in FIG. 4, the attachment member 50 makes the receiver by bringing the belt member 51 provided on the attachment member 50 into contact with the attachment convex portion 28 formed on the tank member 21. The tank 2 and the header pipe 6 are combined.

The attachment member 50 is provided with an attachment surface 52 having a curvature coinciding with the outer circumference of the header pipe 6 so that the attachment surface 52 abuts on a predetermined position of the header pipe 6. In one case, a belt attaching surface 53 is formed in parallel with the tube 2. The belt member 51 surrounds the attachment convex portion 28, and both ends 51a and 51b of the belt member 51 are connected to the attachment surface 52 by the connection member 60.

In this case, since it is formed with the diameter smaller than the diameter of the attachment convex part 28 tank member 21, even if the belt member 51 of the attachment member 50 is attached, the belt member 51 will be a tank. The receiver tank 2 is connected to the heat exchanger 1 without protruding from the main body portion of the member 21 without expanding the installation range in the vehicle body.

FIG. 5 shows a second embodiment of the invention and is a partial cross sectional view taken along the X-X arrow of FIG. 2.

2 and 5, the attachment member 70 abuts the belt portion 71 of the attachment member 70 with the attachment convex portion 28 formed on the upper portion of the tank member 21. The receiver tank 2 and the header pipe 6 are coupled together.

In the attachment member 70, an attachment surface 72 having a curvature coinciding with the outer circumference of the header pipe 6 is formed, and from the attachment surface 72 toward the receiver tank 2, the belt portion ( 71) is formed.

In this case, since the attaching iron portion 28 is formed to have a diameter smaller than the diameter of the tank member 21, even if the belt 71 of the attaching member 70 is attached, the attaching member 70 is not connected to the tank. The receiver tank 2 is connected to the heat exchanger 1 without protruding from the main body portion of the member 21 without expanding the installation range in the vehicle body.

In addition, since the receiver tank 2 is connected to the header pipe 6 of the heat exchanger 1 by the connector 3 and the attachment member 70, the coupling strength is improved and the seismic resistance is secured.

In addition, if the attachment iron portion 28 having a diameter smaller than the diameter of the main body portion of the tank member 21 is formed in an opening shape through which the inside of the tank member 21 is connected, the opening 28a is formed in the opening 28a. It is possible to attach a control member such as a pressure switch, so that the number of parts can be reduced without the need to set a control member attaching component in a separate place, thereby reducing the cost.

In addition, in this example, although the attachment iron part 28 whose diameter is smaller than the diameter of the main body part of the tank member 21 is formed in the upper part of the tank member 21, it is not limited to the upper part, but a connection member is It is possible to form the small diameter part for attachment also in the intermediate part of the tank member 21 to be attached.

This invention is a receiver tank which can connect a receiver tank to other members, such as a header pipe, without protruding attachment members, such as a bracket from a receiver tank main body, and is suitable for the refrigeration cycle for automobiles with a small installation space.

Claims (4)

In the receiver tank connected to the heat exchanger, the liquid refrigerant is stored therein, and the liquid refrigerant is discharged and continuously supplied. A receiver tank having an attachment portion having a diameter smaller than the diameter of the main body portion of the receiver tank is attached to the receiver tank, and an attachment member such as a bracket is attached to the attachment portion and connected to another member such as a header pipe of a heat exchanger. . In the receiver tank connected to the heat exchanger, the liquid refrigerant is stored therein, and the liquid refrigerant is discharged and continuously supplied. A receiver tank, wherein an attachment convex portion having a diameter smaller than the diameter of the body portion of the receiver tank is formed. The receiver tank according to claim 2, wherein the attachment convex portion penetrates through an inside of the main body of the receiver tank. The receiver tank according to claim 2, wherein the convex portion for attachment is formed in an opening shape, and a control member such as a leaf valve is provided in the opening.