JPH0311590Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a rotary type that rotates between two positions within the casing of an air conditioner: a heat exchange position perpendicular to the air flow and a bypass position parallel to the air flow. This relates to drain processing for heat exchangers.

Conventional technology As a rotary heat exchanger, a practical application was already made in 1982.
Although the idea of No. 99853 has been proposed, it has not been implemented in which rotary heat exchangers are arranged in two stages, upper and lower, in a plane perpendicular to the airflow. In the case where the heat exchanger is arranged in stages, the heat exchanger is fixedly arranged.

Problems to be solved by the invention In the above-mentioned structure in which the fixed heat exchangers are arranged in two stages, upper and lower, the drain generated in the upper heat exchanger is drained into the lower drain pan by providing a dedicated drain receiver. However, if rotary heat exchangers are arranged in two stages, upper and lower, providing a drain receptacle exclusively for the upper rotary heat exchanger may be a problem due to space issues within the air conditioner casing. This method is difficult to adopt due to problems such as air resistance, and if the condensate generated in the upper rotary heat exchanger is allowed to fall directly onto the fin surface of the lower rotary heat exchanger, the condensate will be removed by the air flow. This has the disadvantage that it scatters to the downstream side and forms a water film on the fin surface of the lower stage rotary heat exchanger, significantly reducing the heat exchange capacity, that is, the cooling capacity.

Therefore, in this invention, the drain generated in the upper rotary heat exchanger is caught by using a frame that covers the top surface of the lower rotary heat exchanger like a drain pan, and the drain generated in the lower rotary heat exchanger is transferred to the lower rotary heat exchanger. By discharging the water through the attached dedicated drainage channel, the purpose is to prevent the drain from scattering to the downstream side and reduce the heat exchange capacity, that is, the cooling capacity, of the lower rotary heat exchanger. It was devised.

Means for Solving the Problems As stated in the claims of the utility model registration, the present invention provides for an upper heat exchanger and a lower heat exchanger to be connected in a plane orthogonal to the air flow within the casing of an air conditioner. The heat exchangers are arranged in two stages, upper and lower, and can rotate between two positions: a position perpendicular to the air flow and a position parallel to the air flow, and both heat exchangers occupy positions perpendicular to the air flow. The clearance between the bottom of the upper heat exchanger and the top of the lower heat exchanger for rotation is as follows:
It is closed by a partition plate attached to the air flow downstream side of the top surface portion, and a box-shaped frame pan having four peripheral walls and opening upward is on the top surface of the lower heat exchanger. A drain hole in a frame pan for receiving drain on the bottom of the upper heat exchanger is opened toward the frame pan on the top of the lower heat exchanger. The drain outflow hole opened in the frame pan is connected to the drain receiving frame pan at the bottom of the lower heat exchanger through a dedicated drainage channel. This solves the problem of drain processing when heat exchangers are arranged in two stages, upper and lower.

Effect According to the configuration of the present invention, during cooling, condensate generated by condensation on the rotary upper heat exchanger is transmitted through the fins and onto the frame pan that covers the entire top surface of the rotary lower heat exchanger. After flowing down to the drain, it flows into a dedicated drainage channel from the drain outlet hole and is discharged, and since it does not flow through the fins of the lower heat exchanger, it prevents the drain from scattering to the downstream side of the air flow and preventing the drain from flowing into the lower heat exchanger. There is no reduction in heat exchange capacity, that is, cooling capacity.

Embodiment Figures 1 and 2 show an example of implementation, in which the air conditioner is not shown in the casing.
An upper heat exchanger 1 and a lower heat exchanger 2 are arranged in two stages, upper and lower, in a plane perpendicular to the air flow A, and the rotation shafts 3 and 4 move the heat exchange position perpendicular to the air flow A and the air It is arranged so that it can rotate between two positions: a bypass position parallel to the flow A.

The above-mentioned upper heat exchanger 1 and lower heat exchanger 2 are surrounded by frames 5 and 6 to maintain rigidity.

The frame portion that covers the entire bottom surface of the upper heat exchanger 1 is used as a frame pan 7 for receiving drain, and has a plurality of drain holes 8 extending therethrough, and the edge of the frame pan 7 on the downstream side of the air flow A A rising wall 9 is formed over the entire length.

The frame 6 of the lower heat exchanger 2 has a frame pan 10 in which a portion that covers the entire top surface of the heat exchanger 2 faces a frame pan 7 that covers the entire bottom surface of the upper heat exchanger 1 located at the heat exchange position. The frame pan is 10
is formed into a box shape having four peripheral walls 11 and 12 and opening upward.

A plurality of drain outflow holes 13 are opened in this frame pan 10, and the drain outflow holes 13 are as follows:
It communicates with a dedicated drainage channel 14 fixed in the vertical direction of the lower heat exchanger 2, and the drainage channel 14 opens toward a drain pan (not shown) disposed below the lower heat exchanger 2. Although the drain channel 14 in the illustrated example is in the form of a gutter, it is of course possible to replace it with a pipe.

Frame pan 7 of upper heat exchanger 1 and lower heat exchanger 2
A gap H is formed between the four circumferential walls 11 and 12 of the frame pan 10 to provide rotational margin for both the heat exchangers 1 and 2. A partition plate 15 and a packing material 16 are attached to prevent air leakage from the gap H.

Note that the frame portion covering the entire bottom surface of the lower heat exchanger 2 is also a frame pan for receiving drain, similar to the frame pan 7 of the upper heat exchanger 1.

In the figure, numerals 17 and 18 are heat exchange fins, numeral 1
9 and 20 are heat exchange medium supply and discharge pipes, symbols B and C
indicates the rotation direction of the upper and lower heat exchangers 1 and 2.

Because of the above-described structure, the upper heat exchanger 1 and the lower heat exchanger 2 occupy a heat exchange position perpendicular to the air flow A, and when refrigerant is supplied to the supply/discharge pipes 19 and 20 and cooling starts, the upper heat exchanger 1 and the lower heat exchanger 2 The water droplets that have condensed on the surface of the fins 17 of the heat exchanger 1 flow down as drain onto the frame pan 7, flow down from the drain hole 8 onto the frame pan 10 of the lower heat exchanger 2, and are caught.
The water flows into the drainage channel 14 from the drain outlet hole 13 without flowing into the water, and is discharged to a drain pan (not shown) arranged below the lower heat exchanger 2.

Even if the condensate flowing down from the frame pan 7 of the upper heat exchanger 1 onto the frame pan 10 of the lower heat exchanger 2 is exposed to the blowing action of the air flow A, it is scattered to the downstream side of the air flow because of the presence of the partition plate 15. The condensate that has flowed down onto the frame pan 10 of the lower heat exchanger 2 will not flow down through the fins 18, and the fins 18 will have water droplets from the condensation caused by the action of the lower heat exchanger 2. Therefore, the heat exchange ability, that is, the cooling ability, is not inhibited, and the phenomenon in which a large amount of drain flowing down by the air flow A is scattered to the leeward side does not occur.

Effects The present invention has the configuration and operation described above, and the upper heat exchanger and the lower heat exchanger arranged in two stages, upper and lower, connect the heat exchange position and the bypass position, respectively. Despite the possibility of rotational displacement, condensate generated in the upper heat exchanger can be discharged without transmitting through the fins of the lower heat exchanger, thus preventing condensate from scattering to the downstream side of the air flow, and It is also possible to prevent the formation of a water film on the fin surface of the lower heat exchanger due to the drain of the exchanger 1, and there is an effect that the heat exchange capacity, that is, the cooling capacity of the lower heat exchanger is not reduced.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of an example of the embodiment, and FIG. 2 is a vertical sectional view of the structure shown in FIG. 1. 1: Upper heat exchanger, 2: Lower heat exchanger, 10: Frame pan, 11, 12: 4 peripheral walls, 13: Drain outlet hole, 14: Drainage channel, A: Air flow.

Claims (1)

[Scope of utility model registration request] In the casing of the air conditioner, the upper heat exchanger and the lower heat exchanger are arranged in two stages, upper and lower, in a plane perpendicular to the airflow, and one in a position perpendicular to the airflow and the other in a position parallel to the airflow. It is arranged so that it can rotate between positions, and when both heat exchangers occupy positions perpendicular to the air flow, the distance between the bottom part of the upper heat exchanger and the top part of the lower heat exchanger is The rotation allowance gap is closed by a partition plate attached to the airflow downstream side of the top surface portion, and the top surface of the lower heat exchanger has four
A box-shaped frame pan having a peripheral wall and opening upward is disposed, and the drain hole of the frame pan for receiving drain on the bottom of the upper heat exchanger is connected to the frame pan on the top of the lower heat exchanger. The drain outflow hole, which is opened toward the bottom of the lower heat exchanger and is opened in the frame pan on the top surface of the lower heat exchanger, is connected to the frame pan for drain receiving at the bottom of the lower heat exchanger through a dedicated drainage channel. Drain processing structure of rotary heat exchanger of air conditioner.