JPS627946Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a drain piping structure in an air conditioner having two air-side heat exchangers, and its purpose is to improve the flow of drain, increase the freedom of placement, and make it easier to clean the drain pan and perform other operations.

FIG. 1 shows a typical example of an air conditioner with two air-side heat exchangers. In FIG. 1, 1 and 2 are air side heat exchangers, and 3 is a heat source side heat exchanger (more specifically, a water side heat exchanger). A heat pump is formed in which one side functions as an evaporator and the other side functions as a condenser by connecting refrigerant piping to the container 3, and by driving the fan 10 to form an air flow as shown by the arrow in the figure. This figure shows a heat pump unit that exchanges heat between this air and heat source water introduced into a heat exchanger on the heat source side.

In such a unit with two air side heat exchangers 1 and 2, it is necessary that drain pans 4 and 5 are attached to the respective heat exchangers 1 and 2.
The present invention has devised a piping structure that effectively drains the drain from these two drain pans 4 and 5. The outer wall surface of the drain pipe 6 at this gap position and the outer wall surface of the refrigerant pipe 7 of the heat source side heat exchanger 3 are connected by, for example, welding. Features. When connecting the drain pans 4 and 5 to the drain pipe 6, as shown in FIG.
9, and the drain pans 4 and 5 are made detachable from the drain pipe 6.

According to the drain piping structure of the present invention, the drain flowing out from one drain pan 4 is transferred to the heat source side heat exchanger 3.
After being heated by the high-temperature, high-pressure refrigerant, it joins with the condensate flowing out from the other drain pan 5, and approximately half of the total amount of condensate generated exchanges heat with the high-temperature, high-pressure refrigerant. The heating effect is good, and since only one drain pipe 6 is required, the degree of freedom in arrangement is improved. Further, by using the flexible pipes 8, 9, the drain pans 4, 5 can be freely removed, so cleaning can be easily performed.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view showing an example of an air conditioner to which the drain piping structure of the present invention is applied, and FIG. 2 is a perspective view showing an example of the drain piping structure of the present invention. 1, 2... Air side heat exchanger, 3... Heat source side heat exchanger, 4, 5... Drain pan, 6... Drain pipe,
7... High temperature and high pressure refrigerant piping, 8, 9... Flexible pipe.

Claims (1)

[Claims for Utility Model Registration] (1) In an air conditioner in which a heat pump is formed between two air side heat exchangers 1 and 2 and a heat source side heat exchanger 3, each air side heat exchanger The drain pans 4 and 5 attached to the exchangers 1 and 2, respectively, are connected to one drain pipe 6 with a gap between them, and the outer wall surface of the drain pipe and the refrigerant pipe 7 of the heat source side heat exchanger 3 at this gap position are connected. A drain piping structure for an air conditioner characterized by joining the outer wall surface. (2) Drain pans 4 and 5 are connected to drain pipe 6 via flexible pipes 8 and 9, respectively, and drain pans 4 and 5 are detachable from drain pipe 6. Claim No. Drain piping structure described in item 1.