JPS5919908Y2 - rotary heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary heat exchanger, and particularly to an improvement in a circumferential seal portion provided on the outer periphery of the heat exchanger.

Conventionally, the circumferential seal of a rotary heat exchanger is a constriction part 20 provided at a vent 4' of a casing 3', as shown in FIG.
', an elastic belt-shaped circumferential sealing material 1' or a first
An integrally molded annular circumferential sealing material having the cross section of the circumferential sealing material shown in the figure was attached, and sealing was performed by pressing the outer peripheral end surface of the rotary heat exchanger 5'.

Conventionally, in order to provide a constriction section in the vent section of the casing as mentioned above, a constriction mold was required when molding the casing, and in high-mix, low-volume production, a mold was required for each different outer diameter of the rotary heat exchanger. was necessary.

Therefore, mold depreciation costs account for a very large proportion of the manufacturing cost of the rotary heat exchanger unit, greatly increasing the manufacturing cost of the heat exchanger unit.

The present invention addresses the above drawbacks and provides a rotary heat exchanger with a circumferential seal that maintains the conventional sealing performance and significantly reduces the manufacturing cost of the rotary heat exchanger unit.

The present invention will be described in detail below with reference to explanatory diagrams and embodiments shown in FIGS. 2 to 5.

FIG. 2 is an explanatory diagram showing the method of attaching the sealing material in the present invention, FIG. 3 is an embodiment of the rotary heat exchanger unit according to the present invention, and FIG. 4 is an illustration of the embodiment shown in FIG. 3. A sectional view and FIG. 5 are other embodiments of mounting the circumferential sealing material based on the present invention.

First, to explain the method of attaching the sealing material in the present invention, as shown in FIG. , as shown in FIG. 2, bend it to form a ring with the circumferential seal 1 facing outside.

Next, as shown in FIG. 3, a circumferential sealing material fixing member with the circumferential sealing material 1 attached to the inside of the vent hole 4 provided in the casing 3 located on both end faces of the rotary heat exchanger. Insert so that both ends of 2 overlap.

Due to its elasticity, the circumferential sealing material fixing member 2 exerts a restoring force toward the outside to return to its original shape, and as shown in FIG. Fixed at 3.

As described above, in the present invention, the circumferential sealing material 1 can be fixed extremely easily by the restoring force of the elastic band-shaped circumferential sealing material fixing member 2.

In addition, the belt-shaped circumferential sealing material 1 and the circumferential sealing material fixing member 2 having a length equal to the circumferential length of the vent hole,
Because a circumferential seal is formed, even if the outer diameter of the rotary heat exchanger is different, it is necessary to provide a matching vent in the casing and prepare the circumferential sealing material and fixing member for the circumferential length of the vent. Since the casing does not require a drawing part, if an NC machine tool is used to manufacture the casing, there is no need for expensive molds such as conventional molds for forming the drawing part, and the manufacturing cost of the heat exchanger unit can be reduced. can be significantly lower than before.

Next, an embodiment of the rotary heat exchanger according to the present invention will be explained. As shown in FIGS. 3 and 4, the rotary heat exchanger 5 includes a casing 3 having ventilation holes, a side plate 6, The shaft 9 of the heat exchanger is supported by a bearing 8 provided on the angle 7, and the shaft 9 of the heat exchanger is mounted in the center between the two angles via a spacer 10.

Angle 7 divides the ventilation hole into both passages,
A gap formed between the angle 7 and the end face of the heat exchanger 5 is sealed by a center seal 11 provided on the angle 7.

The heat exchanger 5 is driven by a drive motor 1 via a belt 12.
3.

Now, the circumferential seal is attached by elastically pressing the circumferential sealing material fixing member 2 to which the circumferential sealing material 1 is attached to the vent hole of the casing 3 in the manner of the sealing material attaching method of the present invention described above.

Positioning of the fixing member 2 is extremely simple, as it is accomplished by press-contacting the protrusions 14 provided at several locations on the fixing member to the inner surface of the casing 3 using the elasticity of the circumferential seal 2.

Note that the lengths of the circumferential sealing material 1 and the fixing member 2 are
In the figure, the circumferential length of the vent hole is used, but if there is something that divides the vent hole, such as an angle 7, as shown in Figure 3, use two pieces with a semicircular length. , there is no problem in applying elastic pressure to the entire circumference of the vent.

It is preferable that the ends of the circumferential sealing material 1 and the fixing member 2 after being attached to the casing are brought into contact with each other without a gap, as shown in d of FIG. 2, or are overlapped as shown in FIG. 4.

Next, another embodiment of the present invention will be described.

Figure 5a shows an example in which positioning holes 15 are provided at several locations in the circumferential seal fixing member 2 and positioning plates 16 are provided in the casing 3.If the fixing member 2 is highly elastic, installation is extremely easy. Is possible.

b is an example in which the fixing member 2 has a positioning hole 15 and is attached to the casing 3 via the fixing angle 17. Not only can it be easily attached, but if it is fixed by applying force in the direction of the arrow when attaching, the vent hole can be fixed. It is possible to correct the gap between the circumferential sealing material 1 and the casing 3 caused by the accuracy of hole machining.

In addition to the example shown in a, C has a sealing material 18 interposed between the circumferential sealing material 1 and the casing 3, so it is not only easy to install, but also the circumferential sealing material generated due to machining accuracy. 1 and the casing 3 can be eliminated.

In d, a positioning groove 19 is provided in the circumferential sealing material, which not only allows for easy installation, but also eliminates the gap between the circumferential sealing material 1 and the casing 3 caused by machining accuracy.

Incidentally, the intermediate members explained above are indicated by the same symbols, and the conventional ones are indicated by ''.

Arrows also indicate deformation, force, and pressure 9 direction of rotation.

As described above, according to the present invention, the circumferential sealing material is formed of a plate-shaped elastic band, and the circumferential sealing material is localized in the ventilation hole, and the plate-shaped fixing material is pressed against the circumference of the ventilation hole. Since the component is attached to the inner surface of the circumferential seal, the circumferential seal can be attached to the ventilation hole that has only been drilled, without having to form a constricted part to secure the circumferential seal material as in the conventional method. be able to.

Therefore, since the drawing part can be omitted, the casing can be manufactured only by two-dimensional machining, and an expensive drawing mold or the like is not required.

In addition, since the circumferential seal and the fixing member are formed into plate shapes, the circumferential sealing material is elastically attached to the inner periphery of the ventilation hole by simply forming them to an appropriate length, rolling them up, and fitting them into the ventilation hole. , the installation of the seal becomes very simple.

Therefore, in rotary heat exchangers that are produced in small quantities in a wide variety of products according to demand, ventilation holes and circumferential sealing materials of various sizes are required to correspond to the large number of heat exchangers. According to the idea, the ventilation holes do not have ridges, so when manufacturing rotary heat exchangers of various sizes, there is no need for molds for each model, and it can be easily handled with simple machining. This makes it possible to significantly reduce the manufacturing cost of the rotary heat exchanger.

Moreover, since the circumferential seal and the fixing member are plate-shaped, the circumferential seal and the fixing member can be attached to the periphery of the ventilation hole by simply cutting the circumferential seal and the fixing member into appropriate lengths, rolling them up, and fitting them into the ventilation hole. This makes it possible to fix the circumferential seal much more easily than in the past.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a conventional rotary heat exchanger unit.
Fig. 2 is an explanatory diagram showing the present invention, Fig. 3 is a front view of a rotary heat exchanger unit according to the present invention, and Fig. 4 is A-A in Fig. 3.
A sectional view and FIG. 5 show another embodiment of the seal attachment according to the present invention, and the same members are indicated by the same symbols, and the conventional one is indicated by ''. Arrows are deformed. Force, pressure 9 Indicates direction of rotation. 1... Circumferential sealing material, 2... Circumferential sealing material fixing member, 3... Casing, 5...
...Rotary heat exchanger.

Claims (1)

[Scope of Claim for Utility Model Registration] A rotary heat exchanger in which a circumferential sealing material for sealing the outer circumferential portion of the rotary heat exchanger housed in a casing is fixed to the periphery of the ventilation hole of the casing, The circumferential sealing material is formed of a plate-shaped elastic band, and the circumferential sealing material is locally attached to the inner periphery of the ventilation hole, and a plate-shaped fixing member that presses against the circumference of the ventilation hole is attached to the circumferential sealing material. Rotating type with bullets attached to the inner surface