KR20100091305A - Dishwasher for commercial use haring waste heat recovering apparatus - Google Patents

Abstract

PURPOSE: A dishwasher for commercial use embedded with a waste heat recovering apparatus is provided to enable easy cleaning because the waste heat recovering apparatus is easy to mount or separate. CONSTITUTION: A dishwasher for commercial use comprises a waste heat recovering apparatus(1300), a bellows direct water pipe, and a waste water upward guiding unit(1330). The waste heat recovering apparatus is installed in or separated from an installation space of a washer case and includes a waste water inlet(1311), a waste water outlet(1312), a direct water inlet(1313), a direct water outlet(1314), and a sludge removal drain port(1315). The waste water outlet is formed lower than the waste water inlet on the top of a box(1310). The direct water pipe is arranged zigzag from the bottom to the top inside the box and pre-heats direct water with the heat of waste water. The waste water upward guiding unit discharges the waste water upward from the bottom to the waste water outlet.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher for commercial use,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a dishwasher having a built-in waste heat recovery device, and more particularly, to a dishwasher having a built-in waste heat recovery device in which a waste heat recovery device is installed vertically in a dishwasher, In addition, since the waste heat recovery device is not exposed to the outside, the appearance of the dishwasher is improved. Moreover, since the waste heat recovery device can be easily detached from the dishwasher, the waste heat recovery device can be cleaned in a short time, And more particularly, to a dishwasher for business use having a built-in waste heat recovery device capable of improving the efficiency of the dishwasher.

Generally, in a restaurant or the like, a dishwasher for business use is often used to wash a large amount of dishware. When such a dishwasher is installed in a kitchen, a dishwasher main body A washing line is installed so as to be placed.

That is, the tableware to be cleaned is first cleaned first in the cleaning table, and the cleaned tableware is moved to the washing chamber of the dishwasher washing machine after being packed in the rack in the washing table, and the dishes in the washing room are cleaned / The washing machine main body and the drying stand are installed as one washing line so as to be transferred to the drying stand connected to one side of the dishwasher and dried.

Here, the structure and function of the dishwasher are as follows. The dishwasher has a pair of upper and lower washing nozzles and upper and lower rinsing nozzles rotatably mounted on the bottom surface and the upper surface of the washing chamber, And the upper and lower cleaning nozzles disperse the cleaning water toward the dishes of the rack placed in the center of the cleaning chamber to face the cleaning step and the upper and lower rinse nozzles perform the rinse step by spraying the rinse water toward the cleaned dishes .

In addition, a washing water tank and a rinse water tank are installed inside the washing machine body under the washing chamber, a washing motor for pumping washing water of the washing water tank to supply the washing water to the upper and lower washing nozzles, and a rinse water tank for rinsing, A rinsing motor for supplying the liquid to the lower rinsing nozzle, and a circuit board of a control unit for controlling the operation program of the dishwasher.

The hot water supplied through the water supply line after being preheated to about 42 ° C to 52 ° C by the ounce booster or the instantaneous water heater is configured to sequentially fill the rinse water tank and the wash water tank by the distributor in which each flow path is controlled by the solenoid valve In some products, hot water is directly supplied to the rinse water tank without using a dispenser depending on the product.

In addition, the rinse water tank is structured such that the hot water is automatically supplied when the water level is lowered by the valve operated by the water level sensor, and a separate heater is installed in the rinse water tank so that the rinse water is heated The drying effect can be obtained together with the sterilizing effect of the tableware to be rinsed when the rinsing step is performed.

A predetermined amount of detergent is put into the washing water tank by a separate detergent motor and a certain amount of rinse is injected into the rinse water tank by a separate rinsing motor.

Most of the operating parts of the dishwasher for business use are equipped with a rack temperature of about 65 ° C to 60 ° C in the washing water tank, And a rinsing step of rinsing and sterilizing hot water of 80 DEG C or more of the rinsing water tank is sprayed to the upper and lower rinsing nozzles when the cleaning step is completed.

Here, the water in the rinse water tank is subjected to a rinsing step once, and water of a reduced level is supplied from the instant water heater by a heater, then heated to 80 ° C to 85 ° C or higher by a heater, 85 ° C) is lower than the temperature of the washing water in the washing water tank (55 ° C to 60 ° C) although the temperature is lowered to about 60 ° C to 70 ° C during the rinsing of the tableware.

Therefore, since most of the used water changed from 60 ° C to 70 ° C flows into the washing water tank while the rinsing step is performed, the temperature of the washing water in the washing water tank gradually rises during operation of the dishwasher due to the temperature of the incoming used water, The washing water of the washing water tank is partially discharged through the overflow hole provided in the washing water tank every time the used water is introduced.

On the other hand, the water supplied to the rinse water tank in the business dishwasher is preheated to about 42 ° C to 52 ° C by the hot water booster or the instantaneous water heater as described above, and the water supplied to the rinse water tank and the washing water tank A hot water booster or an instantaneous water heater may be used. However, in order to reduce the cost due to the consumption of fuel and to facilitate the facility, a kitchen utensil for installing a waste heat recovery device for preheating water by using high- The applicant of the present invention has been registered as a patent No. 745699.

That is, as shown in FIGS. 1 and 2, one end of a plurality of partition walls 111 is connected to the inner surface of the housing 110 of the waste heat recovery apparatus 100 in a staggered manner, And a water discharge inlet 112 is formed in one side of the housing 110 so that water discharged from the washing water tank 320 of the dishwasher can be introduced into the water discharging inlet 112. In addition, On one side, a discharge outlet 113 is formed so that the discharge water flowing into the housing 110 is discharged to the outside.

A raw water pipe 200 is installed in a zigzag form in the space of the housing 110 and a hot water supply unit 120 connected to one end of the raw water pipe 200 is provided on one side of the housing 110 adjacent to the water discharge inlet 112, (Not shown) connected to the rinsing water tank 310 or the washing water tank 320. The other end of the housing 110 adjacent to the water discharge outlet 113 is connected to a raw water pipe The water inlet 130 connected to the other end of the washing water tank 200 is connected to the water pipe so that when the water overflowing from the washing water tank 320 of the dishwasher flows into the inside of the waste heat recovering apparatus 100, The water is sufficiently heat-exchanged with the raw water of the raw water pipe 200 installed in the waste heat recovery apparatus 100 so that the raw water that is moved to the distributor (not shown in the figure) of the dishwasher through the raw water pipe 200 is raised to an effective temperature It is.

However, such a conventional waste heat recovery apparatus has many problems and will be described in detail as follows.

That is, the water overflowing from the washing water tank 320 and flowing into the housing 110 of the waste heat recovery apparatus 100 is mixed with the food waste because the water is cleaned. Therefore, the bottom surface of the housing 110 Sludge that has settled in the drainage will accumulate and should be cleaned from time to time.

However, when the drain 110 is installed horizontally on the bottom of the dishwasher 400, the bottom 110 of the housing 110 is shallow and the sludge is accumulated on the bottom of the housing 110 more easily, The wastewater recovery apparatus 100 can not perform its proper function because the wastewater inlet 112 is blocked.

In addition, there is no outlet for discharging the sludge in the housing 110 of the waste water discharge apparatus 100 of the related art, and when the housing 110 is separated from the dishwasher 400 to clean the housing 110, Since the dishwasher 400 is installed at the bottom of the dishwasher 400 or the dishwasher 400 is sloped or completely laid on the floor, the housing 110 must be separated from the dishwasher 400 so that it takes a long time to clean the housing 110 .

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to minimize the clogging of the water outlet of the waste heat recovery device by the sludge, And the waste heat recovery device can be easily detached from the dishwasher, so that the waste heat recovery device can be easily cleaned in a short time without difficulty, .

In order to accomplish the object of the present invention, there is provided a waste heat recovering apparatus using waste heat of waste water overflowing in a wash water tank in a main body of a washer, and preheating the waste water to supply hot water to a rinse water tank or a wash water tank A wash water tank in which an overflow hole for overflowing wash water is formed at an upper end of a rear wall; The water outlet is provided at one upper end of the housing so as to allow the water to flow into the inside through the overflow hole, the water outlet is provided at the lower end of the housing at a lower position than the water outlet, and the direct inlet and outlet are provided in the housing A waste heat recovering device detachably attached to an installation space provided in the case of the washer main body and provided with a sludge removing drain port on a bottom surface thereof; A bellows type straight pipe filled with zig-zag from the inner bottom to the upper end of the enclosure so as to connect the direct inlet and the direct outlet from the inside of the waste heat recovering device and the direct water is preheated by the heat of withdrawal; And an upward flow inducing unit partitioned inside the enclosure to guide the flow upward.

In the present invention, the waste heat recovery device is installed vertically in the dishwasher so that the drainage is good and the waste water inlet is not easily clogged due to the sludge, and the waste heat recovery device is installed inside the dishwasher, Since the waste heat recovering device is not exposed, the appearance of the dishwasher can be improved. Moreover, since the waste heat recovering device can be easily detached from the dishwasher, it is possible to complete the cleaning without a difficult time in cleaning the waste heat recovering device. There is an effect that can be improved.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 4 is a perspective view illustrating a dishwasher according to the present invention, FIG. 5 is a view of the waste heat recovering apparatus according to the present invention before the washing water tank is coupled to the washing water tank, FIG. FIG. 7 is a perspective view showing a main part separated before a dirt line is installed in the washing water tank according to the present invention, and FIG. 8 is a view illustrating a state in which a dirt line is detached and removed in the present invention.

The present invention preheats the direct water to the waste heat recovering device using the waste heat of the waste water that overflows through the overflow hole 1210 in the washing water tank 1200 in the washing machine body case 1000 and supplies the waste water to the rinse water tank 1100 or the washing water tank (1200), comprising: a wash water tank (1200) having an overflow hole (1210) for overflowing wash water at an upper end of a rear wall; A water outlet 1311 is provided at one upper end of the housing 1310 so as to allow the water to be drawn in through the overflow hole 1210. The other end of the housing 1310 is located at a position lower than the water outlet 1311 A drain outlet 1312 is provided and a direct inlet 1313 and a direct outlet 1314 are provided in the housing 1310 and a sludge removing drainage hole 1315 is provided on the bottom surface, A waste heat recovering device 1300 detachably installed in the installed space; A bellows-type direct water pipe 1320 which is filled with zig-zag from the inner bottom to the upper end of the enclosure 1310 so as to connect the direct inlet 1313 and the direct outlet 1314 in the waste heat recovery device 1300, ; And an upflow inducing unit 1330 partitioned inside the enclosure 1310 to guide the withdrawing water flowing into the waste heat recovering apparatus 1300 upward from the bottom of the bottom toward the withdrawing outlet 1312 .

Reference numerals 1317 denote fixing brackets installed above and below the waste heat recovery apparatus.

In the present invention, a separate waste heat recovery device 1300 is installed in the dishwasher so that the overflowed water in the washing water tank 1200 is introduced into the waste heat recovery device 1300, The raw water of the direct water pipe 1320 is preheated by using the heat of the water discharged from the device 1300 to flow into the rinse water tank 1100 and the washing water tank 1200 in a state where the direct water temperature is raised, The heating time of the heater for raising the washing water to the set temperature is reduced as much as the conventional case.

However, the feature of the present invention is that the waste heat recovery apparatus 1300 is vertically installed in the case 1000 of the dishwasher so as to improve the appearance of the dishwasher, the drainage is good, the sludge is less likely to be caught, (1300) is easy to remove from the dishwasher so that it can be easily cleaned without difficulty.

That is, the present invention is characterized in that the housing 1310 of the waste heat recovery apparatus 1300 for preheating the direct water using the heat of the water to be overflowed in the wash water tank 1200 is installed in the installation space in the cleaner body case 1000, As shown in Fig.

The upper end of the housing 1310 is provided with a water outlet 1311 for allowing the water from the washing water tank 1200 to flow into the housing 1310 through the overflow hole 1210, Has a discharge outlet (1312).

The housing 1310 is provided with a direct inlet 1313 and a direct outlet 1314. A drain port 1315 for removing sludge is provided on the bottom of the housing 1310. An inlet 1313 is provided in the housing 1310, And a direct outlet pipe 1320 is provided so as to connect the direct outlet port 1314 with a zigzag straight pipe 1320.

The water discharge upward guide portion 1330 is installed in the housing 1310 to guide the discharge water flowing into the housing 1310 upward from the bottom of the bottom toward the discharge outlet 1312.

The high temperature water overflowing from the wash water tank 1200 flows into the housing 1310 through the overflow hole 1210 through the water outlet 1311 formed in the housing 1310 of the waste heat recovery apparatus 1300, Since the direct water pipe 1320 is staggered so that the direct inlet 1313 and the direct water outlet 1314 are connected to each other in the housing 1310, the high temperature water discharged into the housing 1310 is discharged through the direct inlet 1313 The water is introduced into the direct water pipe 1320, is moved to the direct water outlet 1314, and the water is discharged and heat exchanged while the direct water is preheated to a predetermined temperature.

That is, the temperature of the overflow in the wash water tank 1200 and the flow of water into the enclosure 1310 through the water outlet 1311 of the enclosure 1310 is maintained at about 60 ° C, The temperature of the direct water to be moved is about 10 ° C to 13 ° C. The temperature of the water to be moved is preheated to a high temperature of about 40 ° C to 45 ° C while exchanging heat with the water to be discharged, and is sent to the distributor through the direct outlet 1314, And the rinse water tank 1100 as shown in FIG.

In the bottom of the housing 1310, the water-discharging upward guide portion 1330 and the water-discharging upward guide portion 1330 are formed in the bottom of the housing 1310 so that the water-discharging can be smoothly discharged upward toward the discharging outlet 1312. [ So that the water drawn into the housing 1310 is discharged to the water outlet 1312 through the water outlet upward guide portion 1330. [

The upper part 1331 made in an opening direction for allowing the air to flow upward is disposed at a position higher than the outlet port 1312. The outlet port 1312 is disposed at a lower position than the outlet port 1311, The upper portion of the housing 1310 is spaced apart from the upper plate by a predetermined distance h so as to escape through the water outlet 1312 only by the amount of water withdrawn by the air pressure acting through the upper portion 1331, A proper amount of water will remain.

As shown in FIG. 6, the enclosure 1310 of the waste heat recovery apparatus 1300, which is operated as described above, is vertically installed so as to be in close contact with the rear surface of the washing water tank 1200, So that the temperature of the direct water can be increased correspondingly.

That is, since the insertion tube 1220 having the O-ring 1221 is formed in the overflow hole 1210 of the washing water tank 1200 in order to closely attach the housing 1310 to the washing water tank 1200, And a support portion 1316 for pressing the O-ring 1221 of the insertion tube 1220 is formed inside the water discharge inlet 1311 of the housing 1310 so that the insertion tube 1220 is inserted into the water discharge inlet 1311 When the insertion tube 1220 is inserted into the water discharge inlet 1311, the insertion tube 1220 is not separated from the water discharge inlet 1311 until the support portion 1316 presses the insertion tube 1220 and artificially pulls the body 1310 I will not.

After the housing 1310 is assembled to the washing water tank 1200, the washing water tank 1200 may be fixed using a fixing bracket 1317 installed above and below the housing 1310.

If the waste heat recovery apparatus 1300 is vertically installed in the dishwasher in the above-described manner, the waste heat recovery apparatus 1300 is not exposed to the outside, and the waste heat recovery apparatus, It is possible to easily solve the problem of the appearance loss.

Further, when the waste heat recovery apparatus 1300 is installed vertically, the bottom becomes deeper, so that even if the sludge contained in the dehydration is piled up on the bottom surface, there is very little possibility that the dehydration inlet 1311 is clogged due to the sludge.

A sludge removing drainage hole 1315 is provided on the bottom of the housing 1310 of the waste heat recovery apparatus 1300 so that when the drainage hole 1315 is opened occasionally when the dishwasher is not used, 1315, and a considerable amount of sludge is discharged together with the amount of sludge so that the number of times of cleaning the waste heat recovery apparatus 1300 can be reduced.

In the present invention, a dirt wire netting 1240 is disposed in the washing water tank 1200 in order to minimize mixing of food waste with the waste water overflowed to the waste heat recovery apparatus 1300 after cleaning the tableware with the washing water of the washing water tank 1200 Install it.

That is, a fixing plate 1230 having a plurality of latching pieces 1232 formed on one side of the rim of the hole 1231 formed at the position corresponding to the overflow hole 1210 is provided on the inner surface of the washing water tank 1200 having the overflow hole 1210, And the dirt wire net 1240 can be easily attached to and detached from the fixing plate 1230 by forming the flange 1241 at the edge of the dirt wire netting 1240 to be hooked on the hooking piece 1232. As a result, When the dirt trapping wire 1240 is removed and the dirt is removed, the amount of dirt that flows into the waste heat recovering device 1300 along with the drainage is reduced so that the number of times of cleaning the waste heat recovering device 1300 can be significantly reduced It is.

1 is a perspective view illustrating a dishwasher having a conventional waste heat recovery device.

2 is a cross-sectional view of a main portion showing a conventional waste heat recovering apparatus.

3 is a schematic view showing a state where a conventional waste heat recovery device is installed in a dishwasher.

4 is a perspective view illustrating a dishwasher according to the present invention.

5 is a view showing a state before the waste heat recovering device and the washing water tank are joined according to the present invention.

6 is an assembled sectional view of a waste heat recovery apparatus and a wash water tank according to the present invention.

FIG. 7 is a perspective view of a main part separated before a dirt line is installed in a washing water tank according to the present invention. FIG.

8 is a diagram illustrating a state in which a dirt trapping network is attached and detached in the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

1000: washer main body case 1100: rinse water tank

1200: wash water tank 1210: overflow ball

1220: Insertion tube 1221: O-ring

1230: Fixing plate 1231: Hole

1232: latching piece 1240: dirt line

1241: Flange 1300: Waste heat recovery device

1310: Enclosure 1311: Exit entrance

1312: Water outlet 1313: Direct water inlet

1314: direct outlet port 1315: drain port

1316: Support part 1317: Fixing bracket

1320: direct water pipe 1330:

1331:

Claims (5)

The waste water in the washing water tank 1200 in the washing machine main body case 1000 is preheated by the waste heat recovering device using the waste heat of the waste water overflowing through the overflow hole 1210 and is discharged to the rinse water tank 1100 or the washing water tank 1200 A dishwasher for a business that supplies hot water, A water discharge inlet 1311 is provided in correspondence with one upper end of the housing 1310 to allow water to be drawn in through the overflow hole 1210 of the washing water tank 1200, A drain port 1313 is provided at a lower position than the drain port 1311 and a direct inlet port 1313 and a direct outlet port 1314 are provided in the housing 1310 and a sludge removing drain port 1315 is provided on the bottom surface, A waste heat recovery device 1300 detachably attached to an installation space provided in the case 1000; A bellows-type direct water pipe 1320 filled with zig-zag from the inner bottom to the upper end of the enclosure 1310 so as to connect the direct inlet 1313 and the direct outlet 1314 in the waste heat recovery device 1300 and preheating the direct water by the heat of withdrawal; A water-withdrawing upward directing part 1330 partitioned inside the enclosure 1310 so as to guide the discharge water flowing into the waste heat recovery device 1300 upward from the bottom of the bottom toward the discharge water outlet 1312; And the waste heat recovering device is built-in. The method according to claim 1, The enclosure 1310 of the waste heat recovery apparatus 1300 includes: Wherein one side is closely attached to the rear surface of the washing water tank 1200 so as to receive the washing water heat of the washing water tank 1200 from the inside of the housing 1310. [ Equipped dishwasher. 3. The method according to claim 1 or 2, An insertion tube 1220 having an O-ring 1221 is provided in an overflow hole 1210 of the washing water tank 1200 so as to be inserted into the water outlet 1311, A support portion 1316 for pressing the O-ring 1221 of the insertion tube 1220 is formed inside the water discharge inlet 1311 of the housing 1310 And the housing (1310) is detachably attached to the housing (1310). 3. The method according to claim 1 or 2, The water discharge upward directing section 1330, The upper end portion 1331 made to be open to allow the air to flow upward is disposed higher than the exit expelling port 1312 and is spaced apart from the upper plate of the enclosure 1310 by a predetermined distance h so that air pressure acting through the upper end portion 1331 And the waste water is prevented from being sucked into the discharge outlet (1312). 3. The method according to claim 1 or 2, On the inner surface of the washing water tank 1200 having the overflow hole 1210, A fixing plate 1230 having a plurality of engaging pieces 1232 formed thereon is attached to one side of the rim of the hole 1231 coinciding with the overflow hole 1210, Wherein the dirt trapping wire 1240 is provided with a flange 1241 which is fitted to the stopping piece 1232 at a rim and the dirt catching wire 1240 is installed in a detachable manner.

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