JPS61223213A - Plate type oil cooler - Google Patents

Abstract

PURPOSE:To simplify construction of an oil cooler and decrease its weight, by constituting the oil cooler by piling together plural sheets of plates which alternately provide openings with a flange and openings without a flange in a flat part of the annular plate providing a central hole and short cylindrical flanges. CONSTITUTION:This oil cooler 1 is constituted by piling together plural sheets of plates 2. Each plate 2, being formed in an annular shape with a central hole 3 and having short cylindrical flanges 4a, 4b in inner and outer peripheral edges, forms a flat part 5 in an intermediate part between the flanges. The flat part 5 alternately forms an even number of through holes 6a with a flange 8 and through holes 6b without the flange in an equal pitch P on a circumference 7 concentric with the plate 2. And the oil cooler, piling together plural sheets of the above plates 2 being successively displaced by the pitch P so as to arrange the through holes 6a and 6b alternately in the vertical direction, is constituted by securing both a cover 14 through a coating plate 9 to the upper part of the plates and a bottom chamber 15 to the bottom part of the plates.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a cylindrical plate-type oil cooler for internal combustion engines, in which oil filters are often mounted with oil filters stacked on top of each other.

(Prior art) A cylindrical plate-type oil cooler with a central hole is inserted into a hollow bolt provided with bracket glue ζ of an internal combustion engine, and an oil filter stacked on top of the upper part ζ is screwed onto the hollow bolt ξ. It is usually fixed by An example of such an oil cooler is disclosed in Japanese Patent Publication No. 55-48283.

An example is shown in FIG. The oil cooler 30 houses a cooler core 34 inside a cylindrical casing 31 having a cooling water inlet pipe 32 and a cooling water outlet pipe 33, and a collar 38.
A cooler unit 39 is formed by dividing the central opening and caulking the upper and lower plates together, and eight spacer plates 40 having communicating holes and eight cooler units 39 are stacked one on top of the other.

(Problems to be Solved by the Invention) Such a conventional oil cooler requires upper and lower plates, fins 37 for reinforcing the side number ζ, and a collar 38 for partitioning the center hole, and the counter plate ζ Since the spacer plate 40 is required, the cooler core 34 has many parts, has a complicated structure, and is heavy. Furthermore, since the casing 31 is required, the size and weight are increased. Furthermore, since the oil and water only come into contact with each other on the plane between the layers through the plate, it is difficult to increase the heat transfer area with a constant volume.

(Means for Solving the Problems) This invention is intended to solve the above problems, and eliminates the conventional housing, cooler core spacing plates, cooler unit fins, and collars, and uses a single-shaped plate. By overlapping, a partition from the outside and an isolated flow path for oil and water are formed, making it possible to subdivide the flow paths for oil and water. Its structure is as follows.

In other words, the flat part of the annular plate has a short cylindrical flange at the center opening and the outer periphery, and flanged openings (hereinafter referred to as through holes) and flanged openings (hereinafter referred to as through holes) are arranged alternately. and one circumference concentric with the plate,
Plates formed by drilling holes at equal pitches are stacked one on top of the other with the phase shifted from 1 one by one, and the flange of the through hole is placed adjacent to the periphery of the opposing through hole, and the flanges of the periphery of the plate are placed adjacent to each other one above and below. A row of cylindrical openings formed in the group of overlapping plates as described above and having the through hole of the uppermost plate as the upper end are joined to the first and second flanges respectively. The second opening row is divided into two groups ζ, and the cylindrical opening row whose upper end is the through hole of the uppermost plate is divided into two groups of third and fourth opening rows, and the uppermost plate top surface number ζ is divided into two groups. , a cover plate having a pre-opening communicating with the upper end of the second opening row and closing the upper ends of the first, third and fourth opening rows is fixed thereto; A cover covering the second row of openings is fixed, and the lower surface I of the lowest plate closes the lower end of the second row of openings.
an oil inlet chamber communicating with the lower end of the opening row, a water inlet chamber communicating with the lower end of the third opening row and having a water inlet pipe, and a water outlet chamber communicating with the lower end of the fourth opening row and having a water outlet pipe. This is a plate-type oil cooler which has a fixed bottom chamber with the above-mentioned chambers separated by partition walls. (Function) The plate-type oil cooler of this invention functions as follows. From the oil inlet chamber at the bottom of the oil cooler, through holes and through holes are alternately arranged vertically and vertically to form a cylindrical passage.
As it enters the row of openings and rises, it flows out into the plate layer at the through-hole portion without flanges. In this layer, heat exchange is performed with the cooling water of the upper and lower layers through the plate flat portion, and at the same time, heat exchange is performed with the cooling water through the through hole flanges of the third and fourth opening rows in the ζ layer. The oil then exits the oil cooler through the second opening array collection cover. The cooling water enters the water inlet chamber from the water inlet pipe, enters a third row of openings having the same structure as the first and second rows of openings, rises therein, and flows between every other layer of the plate. ,
The uppermost end is blocked by a covering plate and assembled into a fourth opening row ζ, which is then lowered and sent out from the water outlet pipe through the water outlet chamber. During this time, as in the case of oil, heat is exchanged with the oil through the flat portions on the top and bottom of the plate and through the through holes 7 flanges in the first and second opening rows.

Because it operates as described above, it differs from the conventional plate type oil cooler, and by setting a large number of rows of openings, it is possible to increase the heat transfer area by providing not only a flat part of the plate but also more flanges. . Further, since the through-hole flange serves as a support for the upper and lower plates, there is no need for additional reinforcing material such as conventional fins. Further, as in the embodiments described later, projections may be provided on the flat portion to provide reinforcement and increase the heat transfer area.

Furthermore, the flow of oil and cooling water in the plate layer is determined by considering the location and number of plate openings consisting of through holes and through holes, and the group classification of the first to fourth opening rows. You can choose to create a turbulent flow state or have the oil and cooling water flow in opposite directions, increasing the heat exchange efficiency.

Furthermore, since the oil cooler of the present invention has only a single-shaped plate forming its main portion, the structure of the oil cooler can be simplified and lightened.

(Example) The present invention will be explained in detail with reference to FIGS. 1 to 4 ξζ.

FIG. 1 shows an example of a plate according to the invention. The plate 2 is annular with a central hole 3 and inner and outer peripheries.

- Equipped with a short cylindrical flange 4a14b, with a flat portion 5 in the middle. Flat part 51CI! The openings 6 are arranged in an even number (eight in Fig. 1) at a pitch P of Cζ on a circumference 7 having the same center as the plate, and every other hole has a modified ζ flange 8, and the other holes are transparent without flanges. Hole 6b″&
Tt 9,? - Figures 3 and 4 show the oil cooler 1 in which these plates are placed one on top of the other in a face down position - Each plate is sequentially shifted by the pitch P and has through holes 6a.
and through holes 6b are arranged alternately in the vertical direction, and the flange 8
are joined to the periphery of the opposing through hole 6b. The 7 langes 48% 4b on the inner and outer circumferences are also joined. In this way, the plate group is divided into layers by each flat portion 5, and spaces separated by layers ζ are formed by the flanges 8. Then, vertical opening rows corresponding to the number of openings in the plate (eight in this example) are formed. These opening rows are divided into two groups, two of which are the first opening row 10 with the through hole 6b of the uppermost plate as the upper end, and the second opening row 11 (Fig. 3). Two of the four holes whose upper ends are the six through holes of the plate are in the third opening row 1.
2, and the others are divided into a fourth opening row (13 sections) (Fig. 4).

An annular cover plate 9 has an opening 9a communicating with the second wI opening row 1''l on the upper surface of the plate group, closes the upper ends of the first, third and fourth' opening holes, and has a central hole 9b. Fixed.

An annular cover 14 is provided with an oil outlet hole 14m on the upper surface of the cover plate 9, and the inside communicates with the second opening row through the opening 9a.
is fixed.

The bottom chamber 15 is fixed to the lower surface of the three stacked plates as described above. The bottom chamber 15 is provided with an oil inlet chamber 16 having an annular lower end having a central hole and an outer shape substantially equal to a plate, and a water inlet pipe 19, and a third opening row 1.
A closed water inlet chamber 17 that communicates with the lower end of the fourth opening row 13 and a closed water outlet chamber 1B that includes a water outlet pipe 20 and communicates with the lower end of the fourth opening row 13 are formed. 1
It is separated and divided by 123. □The oil cooler 1 receives oil sent from the oil pan of the internal combustion engine into the oil inlet chamber 16 and sends it to the first opening row. As the oil flows upward through the first opening row 10, Uζ
It flows between the flat parts of every other plate, reaches the second row of openings 11, passes through the opening 9a, into the cover 14, and is sent out from the opening 14a.1 Normally, it passes through the oil filter, and passes through the hollow center bolt in the central hole into the engine body. Sent. On the other hand, the cooling water enters the water inlet chamber 17 from the water inlet pipe 19 and enters the third
As it ascends through the row of openings 12, it flows between every other plate layer through the flat portions 5 and 7, and
The oil is cooled, passes through the fourth open rotor, collects in the oil outlet chamber 18, and is sent out from the water outlet vibrator 20.

The plate 32 shown in FIG. 5 has through-holes 36a and through-holes 36b arranged at 90 pitches to form a flange 38.The plate group has oil population, outlet opening, and water inlet of the cooling water layer in the oil layer. Opening, water outlet opening is 1 each
One by one. A plurality of protrusions 37 are provided over the entire surface of the flat portion 35. The protrusions 37 are arranged differently in the area of pitch P and in the area of pitch P, avoiding corresponding positions. The fifth ζ position of the plate is bent so that it comes into contact with the upper or lower plate flat part 35. A cross section of the plate 32 is shown in FIGS. 6(a) and 6(b).

The plate 42 shown in FIGS. 1 and 8 is 2 in 180 pitch.
Concentric circles 47m, 47b top)C2 openings 4
5m, 45b, 46m, and 46b are provided, and these are placed 1c on the same diameter line. When plate 42 is used, the 9th Fj! Like the oil cooler 41 of J, the plate 52 shown in FIG.
A through hole 56a and a through hole 56b are provided on the through hole 55.
b156b are placed close to each other, and a protrusion 59 with a radial direction is provided between them, and a protrusion 58 similar to that in FIG. 7 is provided. In the plate 52, the through holes 55b and 56b are offset to one side of the annular plate 52, and there is a protrusion 59, so that oil or cooling water flows from the through hole 55b to the through hole 56b or from the through hole 56b. The heat flows into the hole 55b by bypassing almost the entire circumference of the annular plate blocked by the protrusion 59, so that the flat part of the annular plate is utilized for heat transfer without waste. The protrusions 59 are arranged alternately on one end and the other end of the diameter in each layer of the oil cooler, so that oil and water flow in opposite directions.

In addition to the plate 52 shown in FIG. 10, the circumferences 57a and 57b may have very similar or equal diameters.

(Effects) Since this invention has the above-mentioned configuration, the structure can be simplified and lightened by using only a single-shaped plate, and by selecting the structure of the plate, a plate type with high heat exchange efficiency can be achieved. This is what you can get with an oil cooler.

Naturally, the cooling fluid and the fluid to be cooled are not limited to water and oil.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the plate of the embodiment, FIG. 2 is a sectional view thereof, and FIGS. 3 and 4 are sectional views of the embodiment. FIG. 5 is a plan view of the plate of the second embodiment, and FIG. 6 is a sectional view thereof. FIG. 7 is a plan view of the plate of the third embodiment;
FIG. 8 is a sectional view thereof, and FIG. 9 is a sectional view of the third embodiment. FIG. 10 is a plan view of the plate of the fourth embodiment, the first
Figure 1 is a sectional view thereof. FIG. 12 is a sectional view of a conventional plate type oil cooler.

Claims (6)

[Claims] (1) A flanged opening (hereinafter referred to as a through hole) and a flanged opening (hereinafter referred to as a through hole) are arranged alternately on the flat part of an annular plate that has short cylindrical flanges on the central opening and the outer periphery. , on the same circumference concentrically with the plate, plates are bored at equal pitches and stacked one on top of the other, with the phase shifted one pitch at a time. The flanges are joined to the vertically adjacent flanges, and the cylindrical opening rows formed in the stacked plate group as described above and having the through holes in the uppermost plate as the upper ends are connected to the first and second opening rows. The cylindrical opening row with the through hole of the uppermost plate as the upper end is divided into two groups, the third and fourth opening rows, and the second opening row is arranged on the top surface of the uppermost plate. A cover plate having an opening communicating with the upper end and closing the upper ends of the first, third, and fourth opening rows is fixed, and a cover having an oil outlet hole on the upper surface and covering the second opening row is fixed. However, on the bottom surface of the bottom plate,
An oil inlet chamber that closes the lower end of the second opening row and communicates with the lower end of the first opening row, a water inlet chamber that communicates with the lower end of the third opening row and includes a water inlet pipe, and a water outlet pipe that communicates with the lower end of the fourth opening row. A plate-type oil cooler comprising a bottom chamber, which has a water outlet chamber with a water outlet chamber, and has a bottom chamber which is separated from each other by a partition wall. (2) Protrusions are provided on the flat part of the plate, and the protrusions are arranged so that their positions do not correspond to the protrusions in adjacent pitch areas, and are brought into contact with the flat part of the upper or lower plate. A plate type oil cooler as described in item 1 of the scope. (3) The plate type oil cooler according to claims 1 and 2, wherein the circumference of the openings forms a plurality of concentric circles, and the same number of openings are provided on each circumference. (4) A plate type oil cooler according to any one of claims 1 to 3, wherein two openings are formed on two identical circumferences, and the openings are arranged on the same diameter. (5) A patent claim in which two openings are formed on the same circumference with both through holes close to each other, and a radially long convex protrusion is provided between both through holes. Range 1st to 3rd
Plate type oil cooler as described in section. (6) The plate type oil cooler according to claim 5, wherein the two concentric circles have the same diameter.