JPH0364794B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a heat exchanger equipped with a defrosting heater for an evaporator used in a defrosting machine or the like.

Prior Art Conventionally, in order to ensure defrosting performance in this type of heater structure, the refrigerant pipe 101 and the heater pipe 102 were placed close to each other as shown in FIGS. 5, 6, and 7. However, since the heater pipe 102 has a complicated shape in which both parts are entangled at the U-bend part 103, the heater pipe 102 is arranged only on the outside of the front stage side 104 of the heat exchanger, and the sealing part 102 is arranged on the same straight line as the heater pipe 102. was installed.

Problems to be Solved by the Invention However, in the above configuration, the heater pipe 102 and the sealing part 106 are on the same straight line, so in order to prevent deterioration of the silicone rubber covering the sealing part, as shown in FIG. There was a problem that a certain distance C was required between the dehumidifiers and the size of the dehumidifier body became large.

In view of this point, the present invention aims to downsize the dehumidifier by changing the heater routing structure.

Means for Solving the Problems In order to solve the above problems, the present invention concentrates the two sealing parts of the heater (connection parts with electric wires) on either the left or right U-shaped tube parts of the heat exchanger. Further, one of the sealing portions is located between the front-stage finch tube and the rear-stage finch tube, and the other side is located between the rear-stage finch tube and the condenser, and the connection portion between the front-stage side and the rear-stage side of the heater is connected to the sealing portion. The configuration is such that they are arranged in the same direction.

Effect The effect of this technical means is as follows.

In other words, by concentrating the heater connection part and each sealing part on the same side, the heater pipe can be inserted from a direction parallel to the straight part of the refrigerant piping of the heat exchanger, which reduces the horizontal size of the dehumidifier. can be reduced.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to FIG. 1 of the accompanying drawings.
This will be explained based on FIG.

In Figures 1 to 4, 1a is the front finch tube of the evaporator A, 1b is the rear finch tube, 2 is the U-shaped tube, 3 is the inlet tube, and 4 is the outlet tube, and these refrigerant tubes are brazed. It is fixed at . 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, and these are formed in a meandering shape. Reference numeral 9 denotes a sealing portion on the front stage side of the heater pipe, and is provided between the front stage finch tube 1a and the rear stage finch tube 1b. Reference numeral 10 denotes a sealing portion on the rear side of the heater pipe, which is provided between the rear finch tube 1b and the condenser B. 11 and 12 are each sealing part 9,
This is an electric wire connected to 10. At the ends of the heater pipes 7, 8, sealing parts 9, 10 are attached to the evaporator A.
Extensions 7a and 8a are provided to provide a more constant distance. Reference numeral 13 denotes a connecting part 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. After the heater pipes 7 and 8 are inserted into a U-shaped groove 14 provided in the end plate 5, they are caulked and fixed by a claw 15 which is a part of the U-shaped groove 14 cut out.

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

With the above configuration, when inserting the heater pipes 7 and 8 into the U-shaped groove 14 of the end plate 5, as shown in FIG.
It can be inserted from the direction parallel to the straight line part a. Furthermore, as shown in Fig. 4, the size of the dehumidifier body is determined by the dimension D, and the size of the dehumidifier body is reduced while maintaining a distance C to prevent deterioration of the silicone rubber covering the sealing parts 9 and 10. can do.

Effects of the Invention As is clear from the above embodiments, the present invention provides a defrosting heater for a heat exchanger that is disposed on the front side and the rear side of the evaporator, and that the connecting part of the front and rear stages and the sealing part of the heater are the same. By placing one of the sealing portions of the heater between the front finch tube and the rear finch tube and the other between the rear finch tube and the condenser, the heater can be easily inserted and dehumidified. This allows the size of the machine body to be reduced. Further, by providing an extension between the heater and the sealing part, an insulation distance between the sealing parts can be ensured, and safety can be improved.

[Brief explanation of drawings]

Fig. 1 is a front view of a heat exchanger equipped with a defrosting heater showing an embodiment of the present invention, Fig. 2 is a side view of the heat exchanger, and Fig. 3 is a diagram showing the state in which the heater is assembled into the heat exchanger. FIG. 4 is a top view of the heat exchanger,
FIG. 5 is a front view of a conventional heat exchanger, FIG. 6 is a side view of the heat exchanger, and FIG. 7 is a top view of the heat exchanger. 1a... Front stage finch tube, 1b... Back stage finch tube, 5... End plate, 7... Heater pipe front stage side, 7a... Extension part, 8... Heater pipe rear stage side, 8a... Extension part, 9. 10... Sealing part, 1
3... Connecting portion, 14... U-shaped groove, A... Evaporator,
B... Condenser.

Claims (1)

[Scope of Claims] 1. A plurality of U-shaped grooves are provided on the outside of the front stage and the outside of the rear stage of the end plate of the evaporator, and the pipe of the defrosting heater is connected to the outside of the front stage and the rear stage of the evaporator through the connecting part. A condenser which engages across each of the outer grooves and seals the electrical wire connection in the defrosting heater, with one side between the front finch tube and the rear finch tube and the other side installed in parallel with the rear finch tube and the evaporator. Each of the sealing portions is disposed between the evaporator and the evaporator so as to extend in the same direction on the same side of the evaporator, and the connection portion of the defrosting heater is disposed on the same side of the evaporator. A heat exchanger equipped with a defrosting heater. 2. A heat exchanger equipped with a defrosting heater according to claim 1, which has an extending part inclined and extending a certain distance from the side surface of the evaporator between the sealing part and the defrosting heater. .