JPS6349671Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a mounting structure for an electric heater used to remove frost generated on an evaporator in a refrigeration system such as a marine container. The present invention relates to a mounting structure for attaching an electric heater extending parallel to the cooling pipes to an evaporator having a large number of cooling pipes and a large number of cooling fins arranged orthogonally to the cooling pipes.

(Prior Art) Generally, in a refrigeration system for a marine container or the like, an electric heater is provided in the evaporator, and when the evaporator is frosted, the electric heater heats the fins of the evaporator. It is like removing frost that has adhered to the evaporator.

However, in attaching the electric heater to the evaporator, conventionally, for example,
As described in Japanese Patent No. 148964 and shown in FIG. Long electric heater 5
, and a holder a having a U-shaped cross section and a through hole b in the bottom wall is brought into contact with a plurality of locations at the lower end of the electric heater 5, while a hook part c and a shaft part d are brought into contact with each other. A plurality of locking fittings e are formed, the hooking portion c of the locking fitting e is locked in the mounting hole of the mounting plate 6, and the shaft portion d of the locking fitting e is inserted through the holder a. The electric heater 5 is supported in contact with the lower end surface of the fin 4 by screwing a nut f onto the shaft end of the shaft portion d that projects downward from the hole b and projects from the holder a. By heating the fins 4 with this electric heater 5, frost adhering to the fins 4 is removed.

(Problems to be Solved by the Invention) By the way, in the conventional electric heater mounting structure, when attaching and detaching the electric heater 5 to the evaporator 1, the connection between each of the holders a and the mounting plate 6 is difficult. In the meantime, it is necessary to attach and detach the nuts f of each locking fitting e provided to bring the electric heater 5 into contact with the fin 4, which is not only very troublesome but also takes a long time. Furthermore, during service work, when the electric heater 5 is removed and then reassembled, there is a problem that the nut f and other parts may be lost.

The present invention was devised in view of the above-mentioned problems, and its purpose is to make it possible to attach and detach the electric heater 5 to and from the evaporator 1 with a single touch, very easily and quickly, and to prevent the loss of parts. An object of the present invention is to provide a mounting structure for an electric heater that does not cause problems.

(Means for solving the problem) The mounting structure of the electric heater according to the present invention is as follows.
It is constructed as shown in FIGS.
A contact portion 6 for bringing the electric heater 5 into contact with the lower edge
forming a plurality of mounting plates 6 having a diameter of 1.a, and fixing these mounting plates 6 in parallel with the fins 4 at predetermined intervals, while forming a plurality of mounting plates 6 below the mounting plates 6, facing the abutting portion 6a; A holding member 7 having a holding part 7a that holds the electric heater 5 between it and the corresponding contact part 6a is disposed, and a long hole 7e extending in the vertical direction is formed at one end of the holding member 7. The holding member 7 is pivotally supported on the lower end portion of the mounting plate 6 via a A first spring 9 is provided at the other end of the holding member 7, and a notch hole 7f that is open to the side surface of the holding member 7 is formed, and a connecting member 11 that can be attached to and detached from the notch hole 7f from the open side of the mounting plate 6 is provided. The connecting member 11 is provided with a second spring 12 that supports the holding member 7 in a freely swinging manner and presses the holding member 7 toward the mounting plate 6 through the bottom surface of the member 7. .

(Function) When the electric heater 5 is attached to the evaporator 1, the electric heater 5 is attached to the fin 4.
By making contact with the lower end surface of the holding member 7 and swinging the holding member 7 upward, the notch hole 7b formed at one end of the holding member 7 is inserted into and supported by the connecting member 11. The electric heater 5 is elastically held between the holding member 7 and the fins 4 by the tension of the first and second springs 9 and 12 disposed in the fins, and when the electric heater 5 is removed, By pulling out the connecting member 11 from the notch hole 7b of the holding member 7 and swinging the holding member 7 downward, the electric heater 5 is removed.

(Example) The mounting structure of an electric heater to an evaporator according to the present invention will be described below with reference to an example shown in the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes an evaporator, in which a large number of cooling pipes 3 are installed horizontally in parallel to a support frame 2, and a large number of cooling pipes 3 are installed at predetermined intervals in the length direction of the cooling pipes 3. The cooling fins 4 are connected to the cooling pipe 3.
It is arranged so that it is orthogonal to the

Further, an electric heater 5 is removably attached to the lower side of the fin 4 in the evaporator 1 and extends parallel to the cooling pipe 3 and comes into contact with the lower surface of the fin 4. The fins 4 are heated to remove frost that adheres to the fins 4 during refrigeration operation.

Therefore, when the electric heater 5 is removably attached to the evaporator 1, the following structure is adopted.

That is, as shown in detail in FIGS. 3 to 5, the lower end has a plurality of downwardly bulging portions 6b, 6b, and the electric heater 5 is provided between each of the bulging portions 6b.
A plurality of mounting plates 6 provided with contact portions 6a that contact the
The mounting plates 6 are fixed parallel to the fins 4 between the fins 4 at predetermined intervals.

Further, below the mounting plate 6, a holding portion 7 of the electric heater 5 is provided on the surface facing the contact portion 6a of the mounting plate 6.
A holding member 7 having a diameter is provided.

The holding member 7 includes a bottom wall 7b and side walls 7c, 7 extending upward from both sides of the bottom wall 7b in the width direction.
The holding part 7a of the electric heater 5 described above is formed on the upper surface of each of the side walls 7c, 7c, and the holding part 7a of the electric heater 5 described above is formed on the upper surface of each of the side walls 7c, 7c. Protrusions 7d, 7d that protrude upward are integrally formed on the upper parts of 7c, 7c.

And each protrusion 7d, 7d of the holding member 7
In addition, elongated holes 7e extending in the vertical direction are formed to face each other, and each of the protrusions 7d is inserted into one of the bulges 6b of the mounting plate 6, so that the elongated holes 7e of each of the protrusions 7d are spaced between the elongated holes 7e. By inserting the pivot pin 8 through the bulging portion 6b, the holding member 7 is supported by the mounting plate 6 so as to be able to swing up and down.

Further, a first tension spring 9 having locking rings 9a and 9b at both ends in the length direction is formed, and one locking ring 9a of the spring 9 is provided with a pivot support that is inserted between each protrusion 7d of the holding member 7. The locking ring 9b is locked to the pin 8, and the other locking ring 9b is made to project downward from the bottom wall 7b of the holding member 7, and the locking ring 9b projects from the bottom wall 7b.
By inserting the fixing pin 10 into the holding member 7, the first spring 9 is interposed between the bottom wall 7b of the holding member 7 and the mounting plate 6, and the tensile force of the first spring 9 causes the holding member 7 to This is done as if to force it upward.

Furthermore, the first spring 9 in the holding member 7
A notch hole 7f whose outer end is open toward the outside of the holding member 7 is formed at the end opposite to the arrangement example, and a connecting member 11 (described later) is inserted into this notch hole 7f from the open end thereof. It is inserted removably.

The connecting member 11 has a hook portion 1 at one end in the length direction.
1a, and a locking ring 11b is integrally provided at the other end. A contact plate 11c is inserted into the middle of the connecting member 11, and the plate 11c and the locking ring 1
1b, the connecting member 11 is inserted into the notch hole 7f of the holding member 7, and the bottom wall 7b of the holding member 7 is inserted between the bottom wall 7b of the holding member 7 and the contact plate 1.
By pressing with the second spring 12 through 1c, the holding member 7 is urged upward.

Further, the holding member 7 has a bottom wall 7b extending outward and downward, and a notch hole 7f is formed from the outer end side of the extending portion 7g to the inside of the bottom wall 7b. When the connecting member 11 is inserted into and locked into the connecting member 7f, the extending portion 7g also prevents the connecting member 11 from being detached without permission.

In this way, the tensile force by the first spring 9 and the pressing force by the second spring 12 cause the holding member 7 to
is urged upward so that the electric heater 5 is elastically held between the holding portion 7a of the holding member 7 and the contact portion 6a of the mounting plate 6,
Further, by pulling out the connecting member 11 outward from the notch hole 7f of the holding member 7 against the second spring 12 and swinging the holding member 7 downward around the pivot pin 8, , as if removing the electric heater 5.

The present invention is constructed as described above, and when the electric heater 5 is attached to the evaporator 1, the electric heater 5 is brought into contact with the lower surface abutting portion 6a of the mounting plate 6, and the connecting member 11 is With the holding member 7 in the outward swinging standby state, the holding member 7 is swung upward about the pivot pin 8 to bring the holding portion 7a of the holding member 7 into contact with the electric heater 5. After that, the connecting member 11 is advanced toward the holding member 7 side, and the connecting member 1 is inserted into the notch hole 7f of the holding member 7.
In this way, the connecting member 1 is inserted and locked on the back surface of one side of the holding member 7.
An upward elastic force is applied by the second spring 12 through the contact plate 11c of the holding member 7.
On the other side, an upward elastic force is applied by a first spring 9 interposed between the bottom wall 7b of the holding member 7 and the pivot pin 8, and the electric heater 5 is pressed against the mounting plate. 6 and the holding portion 7 of the holding member 7.
It is elastically fixed and supported between the

Further, when removing the electric heater 5, contrary to the above case, the connecting member 11 is swung outward to separate from the notch hole 7f of the holding member 7,
The holding member 7 is swung downward about the pivot pin 8, and the electric heater 5 is thus taken out.

(Effect of the invention) As explained above, in the mounting structure of the electric heater according to the present invention, a plurality of mounting plates 6 having contact portions 6a on the lower edges of which the electric heater 5 is brought into contact are formed, and these mounting plates 6 are A plate 6 is fixed parallel to the fin 4 at a predetermined interval, and is placed below the mounting plate 6, facing the contact portion 6a.
a holding part 7a that holds the electric heater 5 between
A long hole 7e extending in the vertical direction is formed at one end of the holding member 7, and the holding member 7 is pivotally supported at the lower end of the mounting plate 6 through this long hole 7e. At the same time, a first spring 9 is provided between the mounting plate 6 and the holding member 7 on this one end side to press the holding member 7 toward the mounting plate 6 side, and a side surface of the member 7 is provided on the other end side. Notch hole 7 opened to
f, and is provided with a connecting member 11 that is swingably supported on the mounting plate 6 and can be detached from the open side in the notch hole 7f, and this connecting member 11
Since a second spring 12 is provided that presses the holding member 7 toward the mounting plate 6 through the bottom surface of the member 7, by attaching and detaching the connecting member 11 to and from the holding member 7, the electricity is removed. The operation of attaching and detaching the heater 5 to the evaporator 1 can be done very easily and quickly with a one-touch operation.Moreover, in the present invention, since the component parts are supported by the mounting plate 6, the operation of attaching and detaching the electric heater 5 is easy. This has made it possible to no longer lose component parts.

[Brief explanation of the drawing]

Figure 1 is a front view of the evaporator according to the present invention, Figure 2 is a bottom view of the same, Figure 3 is an enlarged side view of the main parts, Figure 4 is a bottom view of the same, and Figure 5 is a part of the main parts. FIG. 6 is a side sectional view showing a conventional example. 1... Evaporator, 3... Cooling pipe, 4... Cooling fin, 5... Electric heater, 6... Mounting plate, 6a...
Contact part, 7... Holding member, 7a... Holding part, 7f
... Notch hole, 9 ... First spring, 11 ... Connection member, 12 ... Second spring.

Claims (1)

[Scope of utility model registration request] A large number of cooling pipes 3 are arranged horizontally.
This is a mounting structure in which an electric heater 5 extending parallel to the cooling pipe 3 is attached to an evaporator 1 comprising a large number of cooling fins 4 disposed orthogonal to the evaporator 1. A plurality of mounting plates 6 having contact portions 6a are formed, and these mounting plates 6 are fixed parallel to the fins 4 at predetermined intervals,
A holding member 7 having a holding part 7a that faces the contact part 6a and holds the electric heater 5 between the contact part 6a is disposed below the mounting plate 6. A long hole 7e extending in the vertical direction is formed at one end, and the holding member 7 is pivotally supported on the lower end of the mounting plate 6 through the long hole 7e, and the mounting plate 6 on this one end side and the holding member 7 for pressing the holding member 7 toward the mounting plate 6 side.
While the spring 9 is provided, a notch hole 7f that is open to the side surface of the holding member 7 is formed at the other end, and a connecting member 11 that can be attached and detached from the open side to the notch hole 7f is attached to the mounting plate 6. Supporting freedom of movement,
The holding member 7 is attached to this connecting member 11.
A structure for mounting an electric heater to an evaporator, characterized in that a second spring 12 is provided to press against the mounting plate 6 through the bottom surface of the evaporator.