JP3132813U - Waste heat energy recycling device for dishwashers - Google Patents

Abstract

Disclosed is a waste heat energy reuse device for a dishwasher that can be made compact so that the device does not become bulky and can more effectively exchange heat between waste liquid and raw water.
SOLUTION: Hot water heated by a heating water heater 50 inside a washing machine 30 or hot water heated by a heating water heater 40 outside the washing machine 30 is sent to a heating water heater 50 inside the washing machine 30 to heat the internal heating water. In an automatic dishwashing machine that automatically cleans tableware with hot water heated by a vessel 50, a heat absorption pipe 3 formed in a meandering shape with a single pipe is provided inside a flat casing 5 provided with a drain port 4 at the bottom. The waste water submerged pipe 7 is horizontally arranged at the upper end of the flat casing 5, one end 15 of the heat absorption pipe 3 is connected to the raw water supply source 8, and the other end 16 of the heat absorption pipe 3 is It connects with the heating water supply port 9 provided in the washing machine 30, or it connects with the external heating water heater 40 of the washing machine 30, and connects the waste water submerged pipe 7 to the waste water discharge port of the washing machine 30.
[Selection] Figure 1

Description

  This invention is designed to improve the efficiency of the washer by reusing the waste heat energy contained in the waste water that is discarded after the end of use in the automatic dishwasher. The present invention relates to a thermal energy reuse device.

As a conventional waste heat energy reuse device for a dishwasher, there is one described in Patent Document 1. This equipment is equipped with a double corrugated pipe on the lower rear surface of the automatic dishwasher, and the waste water radiator pipe that is the inner pipe of this double corrugated pipe and the raw water endothermic pipe that is the outer pipe form a double structure. Double pipe nipples are fastened to both ends of the heavy corrugated pipe to separate the roles. One end of the inner pipe of the double corrugated pipe has a waste water outlet for discarding the washed water, and the other end of the inner pipe is waste water. Each outlet is configured, an endothermic water carrying outlet is formed at one end of the double corrugated pipe and a raw water carrying inlet is formed at the other end of the outer pipe, and the endothermic water carrying outlet is the primary heating hot water. The secondary heating water heater installed in the lower part of the automatic dishwasher is connected to the primary heating water heater to increase the use efficiency of the washing machine. Economic efficiency can be improved.
Utility model registration No. 3106414

  In the apparatus as described in Patent Document 1, the heat exchange pipe is a double corrugated pipe. Therefore, if the double corrugated pipe is arranged in a meandering manner, the waste heat energy reusing apparatus is bulky. There is a problem that the installation space for the washing machine is increased due to the increase in size.

  DISCLOSURE OF THE INVENTION In view of the above-described problems, the present invention can reduce the size of the apparatus so that the apparatus is not bulky, and can effectively perform heat exchange between the waste liquid and raw water, and the waste heat energy reuse apparatus for dishwashers. The purpose is to provide.

  Means for solving the above problems will be described with reference numerals in the embodiments described later. The apparatus for reusing waste heat energy for a dishwasher according to the first aspect of the present invention is a heating hot water in the washing machine 30. Tableware is automatically washed with hot water heated by the vessel 50, or by sending hot water heated by the heated water heater 40 outside the washing machine 30 to the heated water heater 50 inside the washing machine 30 and heated by the internal heated water heater 50 In the automatic dishwashing machine, the endothermic pipe 3 formed by meandering the single pipe 2 is inserted and arranged in a flat casing 5 which is formed in a flat shape and has a drain port 4 at the bottom. The upper end of the flat casing 5 is horizontally provided with a wastewater submergence pipe 7 having a large number of submergence holes 6 on the lower side, and one end 15 of the heat absorption pipe 3 is connected to the raw water supply source 8 to absorb heat. The other end 16 of the pipe 3 is a washing machine. 0 connected to the heated water supply port 9 or connected to the external heating water heater 40 of the washing machine 30, and the waste water submerged pipe 7 is connected to the waste water discharge port 10 of the washing machine 30 to heat the washing machine 30 internally. Waste water washed with warm water sent from the water heater 50 is supplied to the waste water submerged pipe 7, and the waste water is submerged into the lower heat absorption pipe 3 by the waste water submerged pipe 7.

  Claim 2 is the waste heat energy recycling apparatus for dishwasher according to claim 1, wherein a large number of water-filling holes 6 provided in the wastewater-water pipe 7 are provided at a constant pitch in the longitudinal direction. It is characterized by.

  Claim 3 is the waste heat energy recycling apparatus for dishwasher according to claim 1 or 2, wherein the heat absorption pipe 3 is configured such that both end portions 15 and 16 protrude upward from the upper end of the flat casing 5, respectively. It is characterized by being.

  The effect of the invention by the above solution will be described with reference numerals of the embodiments described later. According to the invention according to claim 1, the endothermic pipe is provided inside the flat casing 5 provided with the drain port 4 at the bottom. 3 is disposed, and at the upper end of the flat casing 5, a wastewater submergence pipe 7 having a number of submergence holes 6 provided horizontally is disposed horizontally, and one end 15 of the heat absorption pipe 3 is connected to the raw water supply source 8. The other end 16 of the heat absorption pipe 3 is connected to the heating water supply port 9 of the washing machine 30 or to the external heating water heater 40 of the washing machine 30, and the waste water submerged pipe 7 is connected to the washing machine 30. It is connected to the waste water discharge port 10, and is used for cleaning with the warm water sent from the internal heating water heater 50 of the washing machine 30. The discarded waste cleaning water is supplied to the waste water submerged pipe 7, and this waste water submerged pipe 7 Since the waste washing water is submerged in the heat absorption pipe 3 below, it is included in the waste washing water. The are for example waste heat energy which corresponds to 60 ° C. effectively absorbed by the heat absorption pipe 3, it is possible to heat the low temperature cleaning raw water flowing inside the endothermic pipe 3 effectively.

  Further, unlike the conventional heat exchanging pipe made of a double corrugated pipe, the endothermic pipe 3 is formed by forming the single pipe 2 in a meandering shape. Therefore, if the pipe length is the same, the endothermic pipe 3 The structure can be made compact and small. Moreover, since the casing 5 into which the heat absorption pipe 3 is inserted and arranged is formed in a flat shape, the apparatus does not become bulky, and the space for installing the washing machine can be minimized.

  According to the second aspect of the present invention, a large number of the water-filling holes 6 provided in the waste water / water-filled pipe 7 are provided at a constant pitch in the longitudinal direction. In addition, since the waste water droplets are drowned by the water-filling holes 6 in a small state, the heat exchange surface area can be increased and heat exchange can be performed efficiently without waste. it can.

  According to the third aspect of the present invention, the endothermic pipe 3 is configured such that the end portions 15 and 16 protrude upward from the upper end of the flat casing 5, respectively. At the same time, the connection with the raw water supply source 8, the heating water supply port 9, and the external heating water heater 40 becomes easy, and the construction cost can be reduced.

  Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an automatic dishwasher equipped with a waste heat energy recycling apparatus for a dishwasher according to the present invention. 2 is a partial sectional front view of the waste heat energy reuse device, and FIG. 3 is a plan view of the waste heat energy reuse device.

  1 and 2, reference numeral 1 denotes a waste heat energy reuse device for a dishwasher according to the present invention, and 30 denotes an automatic dishwasher. The automatic dishwasher 30 sends the hot water heated by the heating water heater 40 installed outside the washing machine 30 to the heating water heater 50 provided inside the washing machine 30, and this internal heating water heater 50. The tableware is automatically washed with hot water heated in.

  As can be seen from FIGS. 1 and 2, the waste heat energy recycling apparatus 1 according to the present invention has a heat absorption pipe 3 formed in a serpentine shape with a series of single pipes 2 formed in a flat shape at the bottom. A wastewater submergence pipe 7 having a plurality of drainage holes 6 provided at a constant pitch in the longitudinal direction is horizontally arranged at the upper end of the casing 5 while being inserted into the casing 5 provided with the drain port 4. One end 15 of the endothermic pipe 3 is connected to a tap faucet 8 as a raw water supply source by a hose 17, and the other end 16 of the endothermic pipe 3 is connected to a heated water supply port 9 provided in the washing machine 30. 11 or connected to the raw water supply port 40a of the heating water heater 40 outside the washing machine 30 by the connection pipe 12, and further, one end 7a of the waste water submerging pipe 7 is connected to the waste water discharge port 10 of the washing machine 30. Connected, inside the washing machine 30 The waste water washed with warm water sent from the heating water heater 50 is supplied to the waste water submerged pipe 7, and the waste water is submerged into the lower heat absorption pipe 3 through this waste water submerged pipe 7 and is contained in the waste wash water. For example, waste heat energy corresponding to 60 ° C. is effectively absorbed by the heat absorption pipe 3, and the low-temperature cleaning raw water flowing through the heat absorption pipe 3 is heated to a required temperature.

  In addition, the heating water discharge port 40b of the heating water heater 40 is connected to the heating water supply port 9 of the washing machine 30 by the connecting pipe 13. The heating water heater 40 is, for example, a gas heating water heater, and the gas supply pipe 14 is connected to the gas supply port 40c.

  The casing 5 is characterized in that it is formed in a flat shape with an upper end opened by a front plate 5a, a back plate 5b, narrow left and right end plates 5c, 5c, and a bottom plate 5d. Note that the upper end of the casing may be closed with an upper plate (not shown) at a portion excluding both end portions 15 and 16 of the heat absorbing pipe 3. If an example of the dimensions of the flat casing 5 is shown for reference, the height H of the casing 5 is 400 mm, the lateral width W is 600 mm, and the longitudinal width T is 22.4 mm as shown in FIGS. is there. The drain port 4 is provided on one end side of the bottom plate 5d. Further, the water-filling holes 6 are provided at a pitch of 20 mm over the entire length of the water-filling pipe 7 having an inner diameter of 17.5 mm.

  As can be seen from FIGS. 1 and 2, the endothermic pipe 3 formed by forming a series of single tubes 2 in a meandering manner forms a vertical tube portion 3a extending in the vertical direction on the one end portion 15 side, and this vertical tube portion 3a. A meandering portion 3b extending substantially horizontally from the lower end portion to the required length and extending upward from the leading end portion is repeatedly formed in a plurality of stages, and the leading end portion of the uppermost meandering portion 3b is vertically extended to extend vertically. The tube portion 3c is formed, and the end portion of the vertical tube portion 3c is used as the other end portion 16 of the heat absorption pipe 3, and the heat absorption is performed in a state where the lowermost meandering portion 3b is close to the bottom surface of the flat casing 5. Both end portions 15 and 16 of the pipe 3 are inserted and arranged in the casing 5 in a state of protruding from the upper end of the casing 5.

  The wastewater submerged pipe 7 is horizontally installed at a position where a necessary interval is secured between the uppermost meandering portion 3b of the heat absorbing pipe 3 below the wastewater submerged pipe 7.

  Prior to the use of the waste heat energy recycling apparatus 1 for a dishwasher having the above-described configuration, the heat absorption pipe 3 is inserted and arranged in the flat casing 5, and both end portions 15 and 16 thereof are connected to the upper end of the casing 5. After making it project, the waste water submerged pipe 7 is horizontally disposed on the upper end portion of the flat casing 5, and then the flat casing 5 is attached to the lower rear surface portion 35 of the washing machine 30, and the waste water submerged pipe 7 Is connected to the waste water discharge port 10 of the washing machine 30 so that the waste washing water discarded for use in the automatic tableware washing machine 30 can flow into the waste water submerged pipe 7 and one end of the heat absorption pipe 3. 15 is connected to the faucet 8 of the water supply by the hose 17, and the other end 16 of the heat absorption pipe 3 is connected to the heating water supply port 9 of the washing machine 30 through the connection pipe 11 or heated hot water outside the washing machine 30. Raw water supply Connected by connecting tube 12 to 40a.

  In addition, when the output of the heating water heater 50 provided in the inside of the washing machine 30 is relatively large, the other end portion 16 of the heat absorption pipe 3 is connected to the heating water supply port 9 of the washing machine 30, and the heating water heater When the output of 50 is relatively small, the other end 16 of the heat absorption pipe 3 is connected to the raw water supply port 40a of the heating water heater 40 outside the washing machine 30.

  Thus, when the automatic dishwasher 30 is used, low-temperature cleaning raw water (tap water, which is rinsing water) supplied from one end 15 of the heat absorbing pipe 3 is transferred from the vertical pipe portion 3a to the meandering portion 3b. On the other hand, the waste washing water of about 60 ° C., which has been used as the dish washing water in the automatic dishwashing machine 30 and is discarded for use, flows into the waste water submerged pipe 7 and is about 60 ° C. by the waste water submerged pipe 7. Waste washing water is sprinkled in the form of thin continuous droplets in the lower endothermic pipe 3. The waste water flooded in the heat absorption pipe 3 is discharged from the apparatus 1 through the drain port 4 while accumulating at the bottom of the flat casing 5.

  By the waste water drainage of about 60 ° C. by the waste water submerged pipe 7 as described above, the heat absorption pipe 3 absorbs the waste heat of the waste wash water, so that the low temperature raw water of about 8 ° C. circulating inside is approximately 40 ° C. The heated hot water is preheated to, for example, the heated water supply port 9 from the outlet side end 16 of the heat absorbing pipe 3 and supplied to the heated water heater 50 inside the washing machine 30 where the washing is performed. After being heated to 80 ° C. or higher, which is an appropriate water temperature, the water is introduced into the cleaning chamber and used as rinse water.

  Further, when the heated hot water is supplied from the outlet side end portion 16 of the heat absorbing pipe 3 to the heated water heater 40 outside the washing machine 30, the heated water heater 40 is heated to a required temperature around 60 ° C. The water is supplied from the heating water supply port 9 of the cleaning machine 30 to the heating water heater 50 inside the cleaning machine 30 where it is heated to 80 ° C. or higher, which is the appropriate water temperature of the cleaning water, and introduced into the cleaning room. Will be used.

  Therefore, the waste washing water that has been used as the dish washing water in the automatic dishwashing machine 30 and is discarded for use is repeatedly circulated by the reuse system of the waste heat energy recycling apparatus 1 as described above, so that For dishwashers by conducting heat of approximately 40 ° C, which is two-thirds of 60 ° C, to the newly introduced low-temperature raw raw water (tap water) through the heat absorption pipe 3 The waste heat recycling system can be realized continuously.

  As described above, the waste heat energy recycling apparatus 1 is provided with the heat absorption pipe 3 formed in a meandering shape inserted into the casing 5 provided with the drain port 4 at the bottom, and the upper end portion in the casing 5. In addition, a wastewater submergence pipe 7 having a large number of submergence holes 6 on the lower side is horizontally arranged, one end 15 of the endothermic pipe 3 is connected to the raw water supply source 8, and the other end 16 of the endothermic pipe 3 is a washing machine. 30 is connected to the heating water supply port 9 provided in 30 or connected to the external heating water heater 40 of the washing machine 30, and the waste water submerged pipe 7 is connected to the waste water discharge port 10 of the washing machine 30. Washed with warm water sent from the internal heating water heater 50 of the machine 30 The waste cleaning water discarded is supplied to the waste water submerged pipe 7, and the waste cleaning water is submerged into the heat absorption pipe 3 below by the waste water submerged pipe 7. Therefore, the waste heat energy corresponding to 60 ° C contained in the waste cleaning water Energy is effectively absorbed by the heat absorption pipe 3, it is possible to effectively heat the low temperature cleaning raw water flowing inside the endothermic pipe 3. At this time, the supply pressure of the cleaning raw water supplied to the endothermic pipe 3 is adjusted to, for example, a pressure of 0.65 MPa by a pressure reducing valve (not shown) appropriately provided on the way from the raw water supply source 8 to the endothermic pipe 3. As a result, the raw cleaning water flowing in the heat absorption pipe 3 can be effectively exchanged with the waste cleaning water submerged from the waste water submerged pipe 7, which affects the supply pressure of the raw water supply source 8. Therefore, it is easy to achieve a time balance between the flow rate of the raw cleaning water and the amount of the waste cleaning water, and as a result, the heat exchange efficiency can be increased. Furthermore, since a large number of the water drain holes 6 provided in the waste water submerged pipe 7 are provided at a constant pitch in the longitudinal direction, heat exchange can be performed uniformly over the entire longitudinal direction of the heat absorbing pipe 3, and Since the water droplets are drained by the holes 6 in a small state, the heat exchange surface area is increased accordingly, and heat exchange can be performed efficiently without waste.

  And in this waste heat energy reuse apparatus 1, since the heat absorption pipe | tube 3 consists of what formed the single pipe | tube 2 in the meander shape unlike the conventional heat exchange pipe | tube consisting of a double corrugated pipe | tube, pipe length If the length is the same, the structure of the heat absorbing pipe 3 can be made compact and small. Moreover, since the casing 5 into which the heat absorption pipe 3 is inserted and arranged is formed in a flat shape as shown in FIGS. 2 and 3, the apparatus 1 is not bulky, and the space for installing the washing machine is minimized. Can be.

  Further, the endothermic pipe 3 is configured such that both end portions 15 and 16 protrude upward from the upper end of the casing 5, respectively, so that it can be easily inserted into the casing 5, and the raw water supply source 8 and Connection with the heating water supply port 9 and the external heating water heater 40 becomes easy, and the construction cost can be reduced.

It is a perspective view which shows the automatic dishwasher provided with the waste heat energy reuse apparatus for dishwashers which concerns on this invention. It is a partial cross section front view of a waste heat energy reuse apparatus. It is a top view of a waste heat energy reuse apparatus same as the above.

Explanation of symbols

1 Waste heat energy reuse device 2 Single pipe 3 Heat absorption pipe 4 Drain outlet 5 Casing 6 Hole 7 Waste water submerged pipe 8 Water tap (raw water supply source)
9 Heating Water Supply Port 10 Wastewater Discharge Port 15 One End 16 of the Endothermic Piping Other End 30 of the Endothermic Piping 30 Automatic Dishwasher 40 Heating Water Heater Outside the Washing Machine 50 Heating Water Heater Inside the Washing Machine

Claims (3)

  Tableware is automatically washed with hot water heated by the heating water heater inside the washing machine, or hot water heated by the heating water heater outside the washing machine is sent to the heating water heater inside the washing machine and heated by the internal heating water heater. In the automatic dishwashing machine, a heat absorption pipe formed by meandering a single pipe is inserted and arranged in a flat casing having a flat bottom and having a drain outlet at the bottom, and the flat casing In the upper end of the inside, a wastewater submergence pipe with a large number of submergence holes is horizontally installed, one end of the endothermic pipe is connected to the raw water supply source, and the other end of the endothermic pipe is heated by the washing machine. Connect to the water supply port, or connect to the external heating water heater of the washing machine, connect the waste water drain pipe to the waste water discharge port of the washing machine, and wash with warm water sent from the internal heating water heater of the washing machine Supply the wastewater to the wastewater drainage pipe, Dishwashing waste heat energy reuse apparatus being characterized in that so as to watering the waste water below the endothermic pipe by a tube.   The waste heat energy recycling apparatus for dishwashers according to claim 1, wherein a number of water drain holes provided in the waste water / water drain pipe are provided at a constant pitch in a longitudinal direction thereof.   The waste heat energy recycling apparatus for dishwashers according to claim 1 or 2, wherein both ends of the heat absorption pipe are configured to protrude upward from the upper end of the flat casing.

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