JPH04122981U - Heat exchanger - Google Patents

Abstract

(57) [Summary] [Purpose] To regulate the insertion amount L of the fluid feed pipe 16 and to prevent swirling flow along the inner surface of the tank 8 from occurring. [Structure] Projection wall 1 on the inner surface of the top plate 11 constituting the tank 8
8 is formed. The tip of the fluid feed tube 16, which has a beveled tip, is abutted against this projecting wall portion 18.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea was developed to improve heat exchangers used as evaporators in automobile air conditioners. Regarding good.

0002

[Conventional technology]

Air conditioners have an air conditioner that evaporates refrigerant inside and cools the air flowing outside. An example of a heat exchanger used as a vaporizer is one with the structure shown in Figure 4. For example, as shown in Japanese Patent Application Laid-Open No. 2-169127, it is known that .

0003 This conventional heat exchanger has a pair of protrusions 1a and 1b spaced apart from each other on one end edge. A U-shaped recess 3 is formed on one side of the metal plate 2, and both ends of the recess 3 are The protrusions 1a and 1b are formed so as to be continuous up to their edges. Inside of the recess 3 A large number of protrusions 4, 4 are formed in the recess 3, which corresponds to a heat exchanger tube. , disturbs the flow of fluid such as refrigerant flowing inside the folded channel 5, and causes the fluid and the metal plate to This ensures efficient heat exchange between the two.

0004 The metal plates 2, 2 as described above are made into a set of two, with their recesses 3 facing each other. By overlapping each other in the middle and liquid-tightly joining each other, a U-shaped folded flow is created. A channel 5 and a pair of joints 6a, 6 located at both ends of the channel 5 and protruding from the edge. It is assumed that element 7 has b.

[0005] Then, the joint portions 6a and 6b of each of the plurality of elements 7 are connected to a pair (one pair in FIG. 4). (Only shown) In the slit-shaped connection holes 9, 9 formed on the sides of the tank 8, At the same time, align the outer circumferential surfaces of the joints 6a and 6b with the inner circumferential edges of the connection holes 9 and 9. This is a liquid-tight brazing joint. The tank 8 is constructed by assembling a bottom plate 10 and a top plate 11 in the middle. The connection holes 9, 9 are , are formed on the bottom surface of the bottom plate 10. Along with this, a fin is placed between adjacent elements 7. (not shown).

[0006] Among the pair of tanks 8, one of the tanks 8 has a partition wall 1 fixed to the middle part. 2, it is divided into an inlet chamber 13 and an outlet chamber 14, and the flow is directed to the inlet chamber 13 side. A body inlet 15 is provided on the side of the outlet chamber 14, and a fluid outlet (not shown) is provided on the side of the outlet chamber 14. It is set up.

[0007] In the case of a heat exchanger configured as described above, fluid such as refrigerant is supplied from the fluid inlet 15. When the fluid is sent in, the fluid passes from the inlet chamber 13 through the folded passages 5 of some of the elements 7. and enters another tank, and from this another tank into the folded flow path 5 of the remaining element 7. through which it reaches the outlet chamber 14 of one of the tanks 8, and then from the fluid delivery port. put out

[0008] By the way, the fluid inlet 15 (and fluid outlet) has a structure shown in FIG. The fluid inlet pipe 16 is connected to the fluid inlet port 15 so that the flow of refrigerant, etc. The end of the tube used to transport the body can be freely connected.

[0009] That is, the fluid feed pipe 16 having a beveled end is inserted into the fluid feed port 15 at a certain location. Insert it by a certain length, and also connect the inner peripheral edge of this fluid inlet 15 and the above fluid inlet. The outer peripheral surface of the control tube 16 is liquid-tightly brazed.

0010

[Problem that the idea aims to solve]

However, in the conventional heat exchanger, the fluid is not fed into the fluid feed port 15. Since there was no means to regulate the insertion amount L of the control tube 16, this insertion amount L was set to a predetermined value. It was difficult to hold.

[0011] Also, the fluid sent into the tank 8 from the fluid feed pipe 16 causes this tank to Since a swirling flow is induced along the inner surface of the tank 8, the fluid sent into the tank 8 It becomes difficult to enter the folded channel 5 (Fig. 4) of the element 7, and the heat exchanger has sufficient performance. You will not be able to demonstrate your abilities.

0012 The heat exchanger of the present invention eliminates all of the above-mentioned disadvantages.

[0013]

[Means to solve the problem]

The heat exchanger of the present invention, like the conventional heat exchanger described above, has many heat exchanger tube equivalent parts. A tank is provided at the end of the core consisting of It consists of inserting a fluid feed pipe into the above tank through the fluid feed port. It is.

[0014] Furthermore, in the heat exchanger of the present invention, if a protruding wall portion is provided on the inner surface of the tank, In both cases, the tip of the fluid feed pipe whose end was beveled was brought into contact with this projecting wall. It is a feature.

[0015]

[Effect]

In the case of the heat exchanger of the present invention configured as described above, the fluid feed pipe into the tank The amount of insertion is regulated by the protruding wall formed on the inner surface of the tank. management becomes easier.

[0016] Also, the fluid sent into the tank from the fluid feed pipe is guided by the projecting wall. Since it is away from the inner surface of the tank, swirling flow along the inner surface of the tank is not caused. This makes it easier for the fluid sent into the tank to flow into the portion corresponding to the heat transfer tube.

[0017]

【Example】

FIG. 1 shows a first embodiment of the invention. A part of the top plate 11 that constitutes the tank 8 A protruding part 17 is formed on the inner surface by press working, and a part of this protruding part 17 forms the upper part. The part facing the fluid inlet 15 formed on the side surface of the recording top plate 11 is connected to the projecting wall part 1. It is set at 8. A fluid feed pipe 16 with an obliquely cut end is attached to this projecting wall portion 18. The tip of the

[0018] In the case of the heat exchanger of the present invention configured as described above, the fluid is fed into the tank 8. Since the insertion amount L of the tube 16 is regulated by the protruding wall portion 18, the insertion amount L of the tube 16 is The process becomes easier.

[0019] Further, the fluid sent into the tank 8 from the fluid feed pipe 16 is transferred to the projecting wall portion 18. It is guided away from the inner surface of the top plate 11 that constitutes the tank 8. For this reason, this tank The swirling flow along the inner surface of tank 8 was no longer induced, and the water was sent into tank 8. The fluid easily flows into the folded passage 5 (FIG. 4), which corresponds to the heat transfer tube.

[0020] The other configurations are similar to the conventional heat exchanger described above.

[0021] Next, FIG. 2 shows a second embodiment of the present invention. In the case of this embodiment, the tank 8 is A bank-like ridge 19 is formed on a part of the top plate 11 that constitutes the top plate 11, and this ridge 19 is connected to the projecting wall 1. It functions as 8. Other configurations and functions are the same as in the first embodiment described above. The same is true.

[0022] Next, FIG. 3 shows a third embodiment of the present invention. In the case of this embodiment, the tank 8 is The weir plate 2 is inserted into the tank 8 through a slit 20 formed in a part of the top plate 11. 1 is inserted, and this weir plate 21 functions as a projecting wall part 18. Weir plate 21 and pickpockets The gap with the cut 20 is closed with a brazing material. Other configurations and functions are described in the above section. This is the same as in the first to second embodiments.

[0023] It goes without saying that the structure of the fluid outlet port may be configured in the same way as the present invention. be.

[0024]

[Effect of the idea]

The heat exchanger of the present invention is constructed and operates as described above, but the fluid feed pipe By regulating the amount of insertion, manufacturing becomes easier, and swirling flow along the inner surface of the tank is prevented. By preventing this, performance can be improved.

[Brief explanation of drawings]

FIG. 1 is a sectional view of essential parts showing a first embodiment of the present invention.

FIG. 2 is a sectional view of a main part similarly showing a second embodiment.

FIG. 3 is a sectional view of a main part similarly showing a third embodiment.

FIG. 4 is an exploded perspective view of essential parts of an example of a heat exchanger to which the present invention is applied.

FIG. 5 is a sectional view of main parts showing a conventional structure.

[Explanation of symbols]

1a Projection 1b Projection part 2 Metal plate 3 Recess 4 Protrusion 5 Folded channel 6a Joint part 6b Joint part 7 elements 8 Tank 9 Connection hole 10 Bottom plate 11 Top plate 12 Bulkhead 13 Entrance room 14 Exit chamber 15 Fluid inlet 16 Fluid feed pipe 17 Projection 18 Projection wall part 19 Uplift 20 slits 21 Weir board

Claims (1)

[Scope of utility model registration request] Claim 1: A heat exchanger in which a tank is provided at the end of a core portion consisting of a large number of heat transfer tube equivalent parts and fins, and a fluid feed pipe is inserted into the tank through a fluid feed port formed on the side surface of the tank. A heat exchanger characterized in that a projecting wall is provided on the inner surface of the tank, and a tip of the fluid feed pipe having a beveled end is abutted against the projecting wall.