JPH0364793B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a mounting device for a defrosting heater of an evaporator used in an air conditioner, a dehumidifier, or the like.

Prior Art Conventionally, in order to ensure defrosting performance, this type of heater mounting structure has a U-bend section 103 to bring the refrigerant pipe 101 and the heater pipe 102 close together, as shown in FIGS. 4 and 5. Since the heat exchanger has a complicated shape in which both are intertwined, the heater is disposed only on the outside of the front side 104 of the heat exchanger.

Problems to be Solved by the Invention However, in the above configuration, the front side 104 of the heat exchanger
You can remove the frost on the rear side 105.
There was a problem in that it was difficult to completely defrost the frost that had formed on the surface, and as a result, the defrosting time became long and time was wasted.

In view of this problem, the present invention provides a heater mounting structure that increases defrosting efficiency by disposing heater pipes on both the front and rear sides of the heat exchanger and completes defrosting in a short time.

Means for Solving the Problems In order to solve the above problems, the present invention concentrates the two sealing parts of the heater, consisting of the front stage side and the rear stage side, on either the left or right U-shaped tube part of the heat exchanger. let me,
Furthermore, the connecting portion between the front side and the rear side of the heater is arranged in the same direction as the sealing portion.

Effect The effect of this technical means is as follows.

That is, by forming the bent shape of the pipe portion of the heater as described above, it is possible to open the space between the front and rear stages around the connecting portion between the front and rear stages of the heater, as shown in FIG. This allows the heater pipe to be inserted from a direction parallel to the straight section of the refrigerant piping of the heat exchanger, allowing the heater pipe to be placed on both the front and rear sides of the heat exchanger without being affected by the shape of the refrigerant piping's inlet and outlet pipes. This allows for reliable defrosting in a short period of time.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the accompanying drawings.

In FIGS. 1 to 3, 1 is the main refrigerant pipe of the heat exchanger A, 2 is a U-shaped pipe, 3 is an inlet pipe, and 4 is an outlet pipe, and each refrigerant pipe is fixed by brazing. 5 is an end plate, and 6 is a fin. 7 is the front stage side of the heater pipe, and 8 is the rear stage side of the heater pipe. Reference numeral 9 denotes a sealing portion on the front side of the heater pipe, 10 denotes a sealing portion on the rear side of the heater pipe, and numerals 11 and 12 denote electric wires connected from the respective sealing portions. Reference numeral 13 denotes a pipe that connects the front side 7 and the rear side 8 of the heater pipe, and is arranged on the same side as the two sealing parts 9 and 10 in the left-right direction. After the heater pipes 7 and 8 are inserted into the U-shaped groove 14 provided in the end plate 5,
It is caulked and fixed by a claw 15 which is a part of the U-shaped groove 14 cut out.

Next, the effect of the configuration of this embodiment will be explained.

With the above configuration, the heater pipe 7,
8 into the U-shaped groove 14 of the end plate 5, as shown in FIG.
After opening back and forth, the heater pipes 7 and 8 can be inserted from a direction parallel to the straight portion 1a of the main refrigerant pipe 1 of the heat exchanger A. This allows insertion regardless of the shapes of the inlet pipe 3 and the outlet pipe 4. Furthermore, if the connecting portion 13 of the heater pipe is placed on the opposite side of the sealing portions 9 and 10, the sealing portions 9 and 10 side will be opened and inserted in order to open the heater pipe around the connecting portion 13. However,
At this time, the sealing parts 9 and 10 are easily damaged by the end plates 5 and fins 6 of the heat exchanger A, whereas in the case of this embodiment, the connecting part 13 and the sealing parts 9 and 10 are arranged in the same direction. This makes insertion extremely easy.

In addition, if necessary, U is also attached to the fin 6 of the heat exchanger.
The grooves may be provided continuously, and the heater pipes 7 and 8 may be inserted into both the end plate 5 and the fin 6.

Effects of the Invention As is clear from the above embodiments, the present invention provides a heat exchanger defrosting heater consisting of a front stage side and a rear stage side, which is disposed on the front side and rear side of the heat exchanger. The connecting part and the sealing part of the heater are gathered in the same direction, and this allows the heater to be
It is possible to realize a defrosting device that can be easily inserted into the groove, and can perform reliable defrosting in a short time by disposing it on the front and rear surfaces.

[Brief explanation of drawings]

Fig. 1 is a front view of a heat exchanger showing a heat exchanger defrosting heater mounting structure according to an embodiment of the present invention, Fig. 2 is a side view of the same heat exchanger, and Fig. 3 is a heater of the same embodiment. FIG. 4 is a front view of the heat exchanger showing a conventional heat exchanger defrosting heater mounting structure, and FIG. 5 is a side view of the heat exchanger. 1...Main refrigerant pipe, 3...Inlet pipe, 4...Outlet pipe, 5...End plate, 6...Fin, 7...Heater pipe front stage side, 8...Heater pipe rear stage side, 9,1
0... Sealing part, 13... Connection part, 14... U-shaped groove.

Claims (1)

[Claims] 1 A plurality of U-shaped grooves are provided on the front outer side and the rear outer side of the end plate of the finch tube type heat exchanger, and the pipe of the defrosting heater consisting of the front side and the rear side is arranged on the front side outside and the rear side of the heat exchanger. The two sealing portions of the heater are provided in the same direction, and the connection portion between the front side and the rear side is arranged in the same direction as the sealing portion, and the U-shaped groove of the end plate of the heat exchanger is provided on the outside. Mounting device for the heat exchanger defrosting heater installed and fixed in the.