JPS59230531A - Waste heat utilizing apparatus of tablewear washer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a dishwasher, and in particular to a waste heat utilization device that effectively utilizes hot water overflowing from a washing tank to increase the temperature of water supplied to a rinse tank. It is something.

In the conventional dishwasher waste water heat utilization device disclosed in Japanese Utility Model Publication No. 55-37086, an overflow pipe is installed upright from the bottom of the washing tank, and the water that exceeds a predetermined water level due to falling rinsing water is removed. The water overflows to the outside, and at this time, a container placed between the bottom surface of the main body and the installation surface receives the overflowing hot water, and heat exchanges between this hot water and the water supply pipe to the rinse tank to increase the temperature of the water supply. I try to let it happen.

In such conventional devices, the container must be installed at a position lower than the bottom of the overflow pipe, and the height of the container is limited, and the installation area is also limited. It was not possible to perform heat exchange well.
The heat exchange area is increased by arranging the water supply pipes in a meandering manner on the same horizontal plane, but since the water supply pipes are located in the same temperate zone as the hot water, it is not possible to expect much increase in efficiency.

(c) Purpose of the Invention The present invention addresses the drawbacks of the prior art, improves the heat exchange efficiency of the overflow water from the wash tank and the water supply pipe to the rinse tank, increases the temperature of the water supply to the rinse tank, and saves thermal energy. The purpose is to save money.

B) Structure of the Invention The present invention includes a cleaning process in which cleaning hot water from a cleaning tank is sprayed onto the object to be cleaned from a cleaning nozzle, and hot water in a hot water storage tank for heating and storing water supplied from a water supply pipe from a rinsing nozzle to the object to be cleaned. This is a dishwasher that performs a jet rinsing process, and drops each port after washing and rinsing into a washing tank, and overflows the hot water that exceeds a predetermined water level in the washing tank to the outside. An overflow port is formed in the main body of the washer, an overflow pipe is extended from the overflow port, a recovery tank for collecting hot water flowing out from the overflow pipe is installed in parallel with the washing machine body, and the water supply pipe is installed in the recovery tank. This waste heat utilization device for a dishwasher is arranged in a vertical coil shape and the water flow direction in the coiled portion is from bottom to top.

(e) Example An example of the present invention will be described below with reference to the drawings. A cleaning chamber (2) whose front and both sides are opened by a door body (1) that can be raised and lowered is divided into the upper part of the main body, and above and below there are a cleaning nozzle (31032) and a rinsing nozzle (41) (
42) is rotatably arranged, and the object to be cleaned (5) is placed between these parts.
A rack (6) for storing the sumo wrestlers is placed on the support rail (a drain device (8) is installed at the bottom of the washing room (2), where the wrestlers are placed).
A cleaning tank (QO) is defined by a drain port (9) that can be opened and closed by a cleaning tank (QO). Furthermore, a removable strainer 0υ is arranged above the cleaning tank (101).

In the cleaning cycle, the cleaning hot water stored in the cleaning tank (IcI+) is pumped through the cleaning nozzle (31) by the cleaning pump Q21.
3t) and spraying it onto the object to be cleaned (5). On the other hand, as shown in Fig. 2, the rinse cycle mainly consists of a water heating device (14) supplied from a water supply pipe (13) connected to a water supply source, and a hot water storage tank aω that stores heated hot water. This uses boiling water from the rinsing nozzle (4,) (
42) and is sprayed onto the object to be cleaned (5). In the embodiment, the hot water storage tank α9 is configured inside the main body adjacent to the cleaning tank (10), but the water heater α6) may be installed outside the main body. Also a water heater (16
The hot water in ) is not limited to being used only as rinsing water, but may also be used for other purposes, for example, for supplying hot water to the cleaning tank QO) only for the first time. Furthermore, a pole tap type water supply control device (29) is attached to the tip of the water supply pipe (+3) to control the water supply to the hot water storage tank cod to a predetermined water level. By the way, the rinsing water after the rinsing cycle is in the cleaning tank 00.
), and since this rinsing water is high temperature and relatively clean, it is possible to prevent the temperature of the washing water from dropping and to exchange fresh water. As the amount of rinsing water that has fallen increases in the cleaning tank 00), the increased amount of hot water comparable to this amount of rinsing water is extended from the overflow port (IOA) formed at the top of the side wall of the cleaning tank 00). The hot water overflows out of the main body from the overflow pipe marked tJ, and this hot water is effectively used by the waste heat utilization device of the present invention.

Next, a specific configuration of a typical waste heat device of the present invention will be explained. α minus 3 partition plates <zo+ ) (202) (2
03), four tanks (21+X21tX21s) (
A recovery tank divided into 21<), the first tank (21,)
The overflow piping u8 from the main body is connected to the final tank (214), and the partition plate (20,) (202) (20
The overflow port (23) is located at a position slightly lower than the height of
is open. Also, partition plate (2o+) (2otX2
The lower end of the os) is connected to the bottom surface (
19A), which communicates with adjacent tanks by arranging them with a small interval between them (251) (25202)
53). Furthermore, 6 tanks (21,) (212) (2
13) (214) has a water supply pipe (
131 are arranged continuously in the middle. 6 tanks (21□X21
2X21S) In (21,), the water supply pipe αJ is formed in a vertical coil shape, so that the water flow direction in the water supply pipe 0 is directed from the final tank (214) to the first tank (211), and is coiled. It is set so that the flow flows from the bottom to the top. Although not directly related to the present invention, a collection tank (I
→The top surface is covered with a removable lid t26), and the water supply pipe Q3 inside the collection tank (Ij) is covered with a flare nut (27).
1) (272) can be removed, and the partition plates (201, 202, and 203) are also designed to be removable in a sliding manner, making cleaning and maintenance services inside the tank easy. Ru. Furthermore, a filter (c) is installed at the top of the first tank (211) to collect as clean hot water as possible.

In the waste heat utilization apparatus configured as described above, relatively high temperature hot water enters the first tank (211) from the cleaning tank (11) via the overflow pipe a& in every rinse cycle. This hot water passes through the first communication part (25,) to the second tank (212), and passes through the second communication part (252) to the third tank (25,).
213), and the final tank (213) through the third communication part (25,).
14) and finally drained from the overflow port @. Therefore, the water supply pipe U (to) is of various types (21,) (2
12) Heat is exchanged with hot water in (213) and (214), but at this time, the water passing through the water supply pipe α3) is transferred to the final tank (214).
The temperature is gradually increased from the temperature to the first tank (211).
4) Inside, the hot water flows from the lower part to the upper part by convection (
As the temperature of the water increases, the water flows from the bottom to the top of the coiled portion, increasing the temperature efficiently. The water whose temperature has increased through heat exchange in this way is used in the water heater αω.
Since the hot water is supplied to the hot water storage tank 05, the heating device α(
b) Thermal energy can be significantly saved.

(F) Effects of the Invention The waste heat utilization device of the present invention allows the recovery tank to have a large depth, so the installation area of the recovery tank does not need to be large compared to the conventional method (the The water collection capacity can be increased, and the water supply pipes are arranged in a vertical coil shape inside the recovery tank, and water flows from the bottom to the top of this coiled part, which improves the heat exchange efficiency of the water supply pipes. As a result, the temperature of the water supplied to the hot water storage tank of the water heater can be increased, leading to the effect of significantly saving the thermal energy of the water heater.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a dishwasher equipped with the waste heat utilization device of the present invention, FIG. 2 is a schematic diagram of a water heater, and FIG. 3 is a detailed diagram of the waste heat utilization device of the present invention. α0)...Cleaning tank, (IOA)...Over 7o-port, (13...Water pipe, (15)...
・Hot water storage tank, σ9...Recovery tank. Applicant Sanyo Electric Co., Ltd. and 1 other representative Patent attorney Shizuo Sano N12 Figure 3

Claims (1)

[Claims] 1. A cleaning process in which the cleaning water from the cleaning tank is sprayed onto the object to be cleaned from the cleaning nozzle, and a rinsing process in which hot water from the hot water storage tank, which heats and stores water supplied from the water supply pipe, is injected from the rinsing nozzle onto the object to be cleaned. In a dishwasher of a type in which each port after washing and rinsing is dropped into the washing tank and hot water exceeding a predetermined water level in the washing tank overflows to the outside, hot water exceeding a predetermined water level is placed on the upper part of the wall of the washing tank. An overflow port is formed for discharging the hot water, an overflow pipe is extended from the overflow port, and a recovery tank for recovering the hot water flowing out from the overflow pipe is installed in parallel with the main body of the washer. A waste heat utilization device for a dishwasher, characterized in that the pipes are arranged in a coiled manner in the vertical direction, and the water flow direction in the coiled portion is made to flow from bottom to top.