JPH04108173U - oil cooler - Google Patents

Abstract

(57) [Summary] [Purpose] To distribute oil uniformly inside the arc-curved oil cooler. [Structure] The inner fin installed in the cooler element is divided into a plurality of parts, and the direction of oil flow is changed at the boundary between the dividing lines, thereby allowing oil to flow smoothly along the center line of the curved element.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a curved oil that can be placed in a narrow space such as an air-cooled oil cooler for vehicles. Regarding Kula.

0002

[Conventional technology]

Conventional oil coolers consist of a pair of long, thin dish-shaped plates stacked in opposite directions. Arrange inner fins to form elements. At the same time, the element It has entrances and exits at both ends. And oil inside this element. It is a device that performs heat exchange by circulating cooling air, etc. on the outer surface of the element. Ta. The inner fins of such oil coolers are made of metal plates with trapezoidal or rectangular waves. It bends into a shape, forming many L-shaped cuts on the side of each wave, and openings there. A device with a Such inner fins are made into strips using a press machine. It is manufactured into a long piece by continuously shaping it in the longitudinal direction, and it is Cut it according to the shape of the element and insert it between a pair of plates. and pre A brazing material or the like is inserted between the sheet and the fin, and it is melted in a high-temperature furnace and then solidified. By integrating the fins and the plate, the fins and the plate were integrated. Traditionally, such The inner fin is designed so that the wave ridgeline of the inner fin is perpendicular to the longitudinal direction of the element. It was arranged in a cross-flow type. Note that the oil cooler is formed in a straight line. In this case, the wave ridgeline of the inner fin is parallel to the oil flow direction. A parallel flow type (parallel flow type) was also proposed.

0003

[Issue to be solved]

In the former cross-flow type, such conventional oil coolers are The pressure loss of the oil flowing inside the component is extremely high, preventing smooth oil flow. There were drawbacks that hurt it. In addition, the latter parallel flow type has small oil pressure loss. It's going to be a disaster. However, if such an inner fin is curved If stored in a cooler, the oil flow will be uneven, resulting in reduced heat dissipation. . In other words, since the wave ridge of the inner fin is formed in a straight line, The oil flowing through the curved element is gradually gathered to one side of the element. The disadvantage is that it does not flow evenly.

0004

[Means to solve the problem]

Therefore, the present invention is designed to reduce oil pressure loss and ensure that oil is distributed throughout the element. In order to provide an oil cooler with good heat dissipation that distributes almost uniformly, the following configuration is adopted. . That is, a pair of plate-shaped plates 1, 1 whose entire planes are long and narrow and curved in an arc shape are connected to each other. In the opposite direction, the periphery is joined liquid-tightly, and oil inlet/outlet is provided at both longitudinal ends. 2, 2 are provided to form a flat flow path inside to constitute an element 3. and, The inner fin 6 installed in the flat flow path of the element 3 is located along the ridge line 4 of the element 3. The metal plate is bent into a trapezoidal or rectangular wave shape so that the center is straight. Along with that , a large number of L-shaped cut and raised parts 5 are formed on both sides of the wave in a staggered manner along the ridgeline of the wave. to be accomplished. Then, a plurality of inner fins 6 are arranged in series along the arcuate direction, and Each inner fin 6 has both ends of the ridge line 4 at the center thereof at both ends of the inner fin. It is formed so as to be arranged.

[0005]

[Effect]

According to this oil cooler, the oil flowing inside the element has low pressure loss. It flows along the ridgeline of the wave without being biased to a part of the curved element. , the direction of oil flow is changed at each boundary between a plurality of separated inner fins, Heat is dissipated by flowing almost uniformly to each part of the element along the curved element as a whole. Sexuality is encouraged.

[0006]

【Example】

Next, embodiments of the present invention will be described based on the drawings. Figure 1 shows this oil cooler. Fig. 2 is an explanatory perspective view of the inner fin of the Fig. 3 is a partially cutaway partial view of the oil cooler. It is. This oil cooler is an air-cooled oil cooler, and its entire plane is curved. It is what was done. Installation space for such a curved oil cooler is extremely limited. It is used in vehicles such as motorcycles that have been used for many years. This oil cooler element The plate 3 has a pair of upper and lower curved plate-like plates 1 stacked in opposite directions and has a double plate inside. It houses several inner fins 6. Also, both ends of the element 3 in the longitudinal direction An oil inlet/outlet 2 is provided in each of the parts. Elements made like this 3 is 1 or more, the oil inlet and outlet ports 2 are aligned with each other, and an annular spacer 9 is provided on the edge of the opening. For example, a corrugated outer fin 7 is layered between each element 3. is inserted as shown in Fig. 3. Oil comes out from both ends of the outermost element 3. A boss portion 8 is provided at each entrance 2. The interior of this type of oil cooler The inner fin 6 is formed by bending a metal plate into a wave shape with the center of the ridgeline extending in a straight line. A large number of L-shaped cut and raised parts 5 are cut and raised on both sides of the wave along the ridge line 4 of the wave. It is shaped like a bird. This type of inner fin is usually produced by a press machine. Continuously formed from strips.

[0007] After being formed in this way, an inner filler is formed to match the internal shape of element 3. The outer periphery of the ring 6 is cut. In this embodiment, the three inner fins 6 are arranged in an arcuate direction. Consisting of two arranged in series. Then, each inner fin is adjusted to the size of the ridgeline of the wave. Each section is formed as part of a sector, extending from one end of the arc to the other. . By connecting these members as shown in the diagram, the flow of the gas inside the element can be controlled. The air flows along the ridge line 4 of the inner fin, and Flows roughly along the arc shape of the element, changing direction at the boundary. do. Therefore, oil can be prevented from being biased to one side of the curved portion of the element. That is, in FIG. 2, the oil flowing from the left oil outlet 2 flows into the element It will flow almost uniformly through each part of the inside and flow out from the oil outlet 2 on the right side. . In addition, in this embodiment, each element 3 is stacked in three stages with a spacer 9 interposed therebetween. , the oil inlet/outlet ports 2 of each element communicate with each other. At the same time, the element An outer fin 7 is interposed between the outer fins 3 and 3. And outer fin 7, inner The fins 6 and the inner and outer surfaces of each dish-shaped plate 1 are integrated by brazing or soldering. Fixed. Furthermore, the outermost outer fin 7 has a size made of a plate. The side member 10 is fixed, and the side member 10 is connected to the However, the oil cooler is fixed to a vehicle or the like.

[0008]

[Effect of the idea]

According to this oil cooler, the oil flowing inside the element has low pressure loss. It flows along the ridgeline of the wave without being biased to a part of the curved element. , the direction of oil flow is changed at each boundary between a plurality of separated inner fins, Heat is dissipated by flowing almost uniformly to each part of the element along the curved element as a whole. Sexuality is encouraged. Therefore, the pressure loss associated with oil circulation is small, and the oil cooler has good heat exchange performance. It becomes la. Moreover, the wave ridgeline of the inner fin 6 is formed in a straight line. Therefore, the oil cooler is easy to manufacture and has excellent mass productivity.

[Brief explanation of drawings]

FIG. 1 is an explanatory perspective view of an inner fin 6 installed in the oil cooler of the present invention.

FIG. 2 is a schematic plan view showing the inside of the oil cooler.

FIG. 3 is a partially cutaway explanatory view showing an end of the oil cooler.

[Explanation of symbols]

1 Dish-shaped plate 2 Oil entrance/exit 3 elements 4 Ridge line 5 Cut and raise part 6 Inner fin 7 Outer fin 8 Boss part 9 Spacer 10 Side members

Claims (1)

[Scope of utility model registration request] Claim 1: A pair of dish-shaped plates (1), (1) whose entire planes are long and narrow and curved in an arc shape are oriented oppositely to each other, their peripheral edges are liquid-tightly joined, and entrances and exits (1) are provided at both longitudinal edges. 2), (2) is provided, and the metal plate is bent into a trapezoidal or rectangular wave shape so that the center of the element (3) with a flat flow path formed inside and the center of each ridge line (4) is a straight line. In addition, a large number of L-shaped cut and raised portions (5) are formed on both sides of the wave in a staggered manner along the ridgeline of the wave, and inner fins (6) are installed inside the flat flow path. death,
A plurality of the inner fins (6) are arranged in series along the arcuate direction, and each of the inner fins is configured such that both ends of the ridge line (4) at the center thereof are arranged at both ends of the inner fin. An oil cooler characterized by: