JP7083147B2 - Dishwasher booster - Google Patents

Description

The present invention relates to a dishwasher booster installed to supply hot water to a dishwasher in a commercial dishwasher system.

As disclosed in Patent Document 1, for example, a commercial dishwashing system includes a dishwasher for washing dishes brought into a washing room and hot water for rinsing in the dishwasher installed side by side in the dishwasher. It is known to be equipped with a dishwasher booster for supplying. As disclosed in Patent Document 2, for example, the booster for a dishwasher is heated by an instant heating type heat source unit that heats water supplied with a burner and a heat exchanger by the combustion exhaust of the burner, and a heat source unit. It is equipped with a tank for storing the hot water, and the hot water in the tank can be supplied to the dishwasher via the hot water outlet pipe. Further, it is also known that a circulation pump is provided between the heat source unit and the tank to form a circulation path for circulating hot water.

Japanese Unexamined Patent Publication No. 2006-239024 Japanese Unexamined Patent Publication No. 2001-299662

For the dishwasher booster, an instant heating type heat source unit equipped with a burner and a heat exchanger is used in order to immediately respond to the request from the dishwasher side. The heat source unit or tank unit may be housed in a housing that houses a main body-side device such as a dishwasher-side tank or a dishwasher-side pump for supplying washing water to the washing chamber. However, since the heat source unit requires a relatively large space, it is difficult to incorporate it into the housing together with the tank unit, and even if it is incorporated, maintenance becomes difficult depending on the installation position in the housing.

Therefore, it is an object of the present invention to provide a booster for a dishwasher in which a heat source unit and a tank unit can be arranged even in a narrow space inside a housing and good maintainability can be ensured.

In order to achieve the above object, the invention according to claim 1 is arranged in a housing in which a main body side device used in a dishwasher is housed, and has a heat source unit including a burner and a heat exchanger, and a heat source. A dishwasher booster that includes a tank unit that can store hot water heated by the unit and a circulation path that is equipped with a circulation pump to circulate hot water between the heat source unit and the tank unit.
The heat source unit is arranged on either the left or right side of the front side of the housing, and the tank unit has a flat box shape in which the thickness in a predetermined direction in a plan view is smaller than the thickness in the direction intersecting the predetermined direction . While being formed in an upright position along the longitudinal direction on one side of the housing on the rear side of the heat source unit ,
The circulation path is connected between the upstream end of the heat transfer tube of the heat exchanger and the longitudinal side surface of the tank unit, and between the downstream end of the heat transfer tube and the longitudinal side surface of the tank unit. Including the return tube
The forward pipe is formed by abutting the ends of the tank-side forward pipe connected to the tank unit and the heat source-side forward pipe connected to the heat source unit in the front-rear direction, and using flanges provided at each end. The quick fasteners are engaged at the same time,
The return pipe is characterized in that the tank-side return pipe connected to the tank unit and the heat source-side return pipe connected to the downstream end of the heat transfer pipe are inserted and connected in the front-rear direction .
According to the second aspect of the present invention, in the configuration of the first aspect, a locking plate for locking to a locked portion provided in the housing at an installation position in the housing is provided at the rear portion of the tank unit. It is characterized by being.

According to the first aspect of the present invention, the heat source unit is arranged on the front side of the housing toward one side, and the flat box-shaped tank unit is arranged on the rear side and one side of the heat source unit in an upright position. Therefore, the heat source unit and the tank unit can be arranged without interfering with the main body side device even in a narrow space inside the housing. Further, since the heat source unit is installed on the front side in the housing, it is easy to access and good maintainability can be ensured.
In particular, the outbound pipe forming the circulation path is configured such that the ends of the outbound pipe on the tank side and the outbound pipe on the heat source side are butted in the front-rear direction and the quick fasteners are simultaneously engaged with each other, and the circulation path is formed. Since the return pipe to be formed is configured by inserting and connecting the tank side pipe and the heat source side pipe in the front-rear direction, if the quick fastener on the outbound pipe side is removed and the heat source unit is moved forward, the outbound pipe and the return pipe are formed. Since the ends of the pipes forming the pipes are easily separated from each other, the heat source unit can be easily pulled out from the housing. On the contrary, when returning the heat source unit, if it is pushed into a predetermined position from the front, the ends of the corresponding pipes are butted against each other, so that the connection can be easily performed.
According to the second aspect of the present invention, in addition to the effect of the first aspect, the tank unit is taken in and out by providing a locking plate for locking to the locked portion in the housing at the rear portion of the tank unit. Can be easily performed.

It is a front view of the booster for a dishwasher. It is a side view from the right of the booster for a dishwasher. It is a perspective view of the inside of a booster for a dishwasher. It is a top view of the booster for a dishwasher which omitted the exhaust part. In the explanatory view of the tank unit, (A) shows the front surface, (B) shows the right side surface, (C) shows the left side surface, and (D) shows a plane surface. It is a perspective view of a tank unit. It is a front view of the tank unit which omitted the split case on the front side of FIG. In the explanatory view of the tank unit of the modified example, (A) shows the front surface, (B) shows the right side surface, and (C) shows the plane surface. It is a perspective view of the tank unit of the modified example. It is a central vertical sectional view of the tank unit of the modified example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view showing an example of a dishwasher booster (hereinafter, simply abbreviated as “booster”), FIG. 2 is a side view from the right, FIG. 3 is an internal perspective view, and FIG. 4 shows an exhaust unit. It is a plan view in the omitted state.
This booster 1 is installed in the lower part of the housing 2 of the dishwasher, and is located between the instantaneous heating type heat source unit 3, the tank unit 4 for storing hot water, and the heat source unit 3 and the tank unit 4. It is provided with a circulation path 5 for circulating hot water. In the housing 2, the dishwasher side tank 6 and the dishwasher side on the front side thereof are used as a main body side device for storing and supplying washing water used in a washing room (not shown) provided in the upper part. A pump 7 is provided. The front, back, left and right sides of the housing 2 are covered with wall plates (not shown).

The heat source unit 3 includes a combustion unit 10, a heat exchange unit 11, and an exhaust unit 12 in this order from the bottom.
First, the combustion unit 10 has a lower casing 13 that accommodates a plurality of burners as heating means and forms a combustion chamber inside. On the lower side of the lower casing 13, a fan 14 for supplying combustion air for the burner and a gas supply unit 15 connected to an external gas pipe and provided with a solenoid valve (not shown) for supplying fuel gas to the burner are provided. Has been done. The combustion unit 10 and the heat exchange unit 11 are covered from the left and right and the rear by a plan-viewing U-shaped cover 16 having an opening in the front.

The heat exchange unit 11 has a square cylindrical inner casing 17 that opens vertically and has a lower end connected to the lower casing 13, and has a predetermined interval in the middle casing 17 in the left-right direction as shown in FIG. A heat exchanger 18 including a plurality of fins 19, 19 ... (only a part of which is shown in FIG. 4) and a heat transfer tube 20 that meanderably penetrates the fins 19, 19 ... ing.
The exhaust unit 12 covers the upper casing 21 mounted on the inner casing 17 of the heat exchange unit 11, the exhaust pipe 22 assembled to the upper casing 21, and the upper side of the upper casing 21 and is locked to the inner casing 17. It is provided with a fixed hood 23 for fixing the upper casing 21. Inside the upper casing 21, a CO sensor 24 that is assembled from the front and projects into the upper casing 21 is provided. The exhaust pipe 22 extends rearward along the right wall of the housing 2 on the upper side of the tank unit 4 and the square tubular first pipe 25 connected to the upper casing 21 and extends to the right, and extends to the left side of the front end. It is composed of a second pipe 26 to which the tip of the first pipe 25 is plugged and connected to the surface. The second pipe 26 has a square cylinder shape in which the front end is closed and the rear end is opened, and the rear end is projected to the outside of the housing 2 as shown in FIG.

The tank unit 4 is a flat box-shaped body whose left and right thicknesses are smaller than the front and rear thicknesses in a plan view, and the left and right split cases 4a and 4b made of synthetic resin (however, the split case 4a is the split case 4b). It is formed by assembling.). As is also shown in FIGS. Recesses 31 that retract into are formed respectively. A water supply pipe connecting port 32 is provided on the left side surface of the convex portion 30, and a hot water pipe connecting port 33 is provided on the front surface of the concave portion 31. Further, an overflow pipe 34 is provided downward on the upper surface of the recess 31 toward the front, and an outward pipe connection port 35 is provided on the left side surface on the rear upper side thereof. Further, a return pipe connecting port 36 is provided on the left side surface on the lower rear side of the tank unit 4.

In addition, on the rear surface of the tank unit 4, a locking plate 37 in which a plurality of claws 38, 38, ... Are alternately bent to the left and right is fixed backward, while the convex portion 30 of the tank unit 4 is fixed. , The mounting bracket 39 protruding forward is fixed. Further, a mounting portion 40 for a float switch 41, which will be described later, is provided on the upper surface of the tank unit 4 behind the convex portion 30.

On the other hand, as shown in FIG. 7, a float switch 41 is provided inside the tank unit 4 downward from the mounting portion 40 so that the water level L set in the tank unit 4 can be detected.
Further, in front of the inside of the tank unit 4, an overflow plate 42 that partitions the upper space communicating with the overflow pipe 34 from the rear space is provided upward from the lower inner surface of the tank unit 4 to a height exceeding the water level L. There is. Therefore, when the hot water that exceeds the water level L exceeds the water level L1 at the upper end of the overflow plate 42, it flows into the space in front of the overflow plate 42 and is discharged to the outside from the overflow pipe 34.
Further, between the overflow plate 42 and the water supply pipe connection port 32 in the front-rear direction, there is an upper plate 43 that hangs down from the upper inner surface of the tank unit 4 to a position slightly higher than the overflow plate 42 to partition the inside of the convex portion 30 back and forth. It is provided.

Further, behind the water supply pipe connection port 32, an upper partition plate 44 is provided, which is inclined downward from the rear inner surface of the convex portion 30 toward the front and then extends downward behind the overflow plate 42. Further, below the upper partition plate 44, an inclined partition plate 45 that inclines upward from the rear to the front of the outgoing pipe connecting port 35 is provided. With the upper partition plate 44 and the inclined partition plate 45, the inside of the tank unit 4 has a front passage area A including a water supply pipe connection port 32 and an outward pipe connection port 35, and a hot water outlet pipe connection port having a float switch 41. A partition plate 46 is formed to partition the storage area B on the rear side including the 33 and the return pipe connection port 36.
However, both ends of the inclined partition plate 45 are not connected to the lower inner surface of the tank unit 4 and the lower end of the upper partition plate 44, and between the lower inner surface of the tank unit 4 and the passage area A and the storage area B. The lower communication portion 47 as a communication portion for communicating with the lower side is communicated with the lower end of the upper partition plate 44, and the passage area A and the storage area B are communicated with each other on the upper side. Are formed respectively.

Further, at the lower part of the storage area B, a horizontal plate 49 is provided above the hot water outlet pipe connection port 33 so as to project rearward from the inner surface of the tank unit 4, and above and below the horizontal plate 49, hot water in the storage area B is provided. Tank thermistors 50 and 50 for detecting the temperature are provided, respectively. Further, behind the horizontal plate 49 and between the return pipe connecting port 36, a rear inclined plate 51 that inclines upward from a non-contact position with the lower inner surface of the tank unit 4 toward the front is provided.
Although only the left split case 4a is shown in FIG. 7, the same overflow plate 42, upper plate 43, upper partition plate 44, inclined partition plate 45, etc. are provided in the right split case 4b from the left and right. The passage area A, the storage area B, and the like are formed by the butt. These plates are integrally formed with the divided cases 4a and 4b.

As shown in FIG. 3, the circulation path 5 has a forward pipe 55 connected between the upstream end of the heat transfer tube 20 of the heat exchanger 18 and the forward pipe connection port 35 of the tank unit 4, and the downstream of the heat transfer pipe 20. It includes a return pipe 56 connected between the end and the return pipe connection port 36 of the tank unit 4, and a circulation pump 57 provided in the outgoing pipe 55.
Further, a water supply pipe 58 connected to an external water pipe from the lower surface of the housing 2 is connected to the water supply pipe connection port 32 of the tank unit 4, and the water supply pipe 58 is provided with a water electromagnetic valve 59. Water can be supplied to the tank unit 4 by opening and closing the water electromagnetic valve 59.
Further, a hot water discharge pipe 60 is connected to the hot water discharge pipe connection port 33 of the tank unit 4. The hot water pipe 60 is connected to the washing room of the dishwasher via a rinsing pump (not shown).

In each of these pipes, for the connection between a plurality of pipes forming the going pipe 55, the connection with the circulation pump 57, and the connection between the water supply pipe 58 and the water electromagnetic valve 59, the flanges of the abutted pipe ends are simultaneously attached to the flanges. Quick fasteners 61, 61 ... are used that engage and connect the pipe ends to each other. In particular, the pipe connected to the tank unit 4 and becoming a part of the outgoing pipe 55 has an posture in which the end faces forward, and is connected to the heat source unit 3 and becomes another part of the outgoing pipe 55. It is connected to the pipe by a quick fastener 61. Further, the end portion 56a (FIG. 3) of the pipe connected to the tank unit 4 and becoming a part of the return pipe 56 is connected to the heat source unit 3 and becomes the other part of the return pipe 56. It is connected to (Fig. 1) by inserting it from the rear.
Therefore, if the quick fastener 61 is removed and the heat source unit 3 is moved forward, the ends of the pipes are easily separated from each other, so that the heat source unit 3 can be easily pulled out from the housing 2. On the contrary, when the heat source unit 3 is returned, if it is pushed into a predetermined position from the front, the ends of the corresponding pipes are butted against each other, so that the connection can be easily performed.

Further, a controller (not shown) is provided in the housing 2. This controller controls the combustion of the burner in the heat source unit 3, and also controls the circulation pump 57 and the water electromagnetic wave based on the detection temperature from the thermistor or tank thermistor 50 (not shown) provided in the circulation path 5 and the detection signal of the float switch 41. Controls the valve 59. As a result, the tank water supply control for supplying water up to the water level L into the tank unit 4 and the heat retention control for operating the heat source unit 3 to maintain the hot water in the tank unit 4 at a set temperature (for example, 80 ° C.) are performed. It is feasible.

In the booster 1 configured as described above, the heat source unit 3 is arranged in the housing 2 on the front right side of the dishwasher side tank 6 along the front wall of the housing 2. The folded portions 27, 27 formed at the left and right front ends of the cover 16 at this installation position come into contact with the front wall of the housing 2, so that the heat source unit 3 is surrounded by the cover 16 and the front wall. There is.
Further, the tank unit 4 is arranged in the housing 2 so as to extend in the front-rear direction along the right wall of the housing 2 on the right side of the dishwasher-side tank 6. Here, when the tank unit 4 is pushed backward, the locking plate 37 on the rear side is locked to the support bar 80 in the vertical direction as a locked portion provided at the right back corner in the housing 2. Positioned, if the front mounting bracket 39 is fixed to the vertical support bar 81 provided at the right front corner in the housing 2 on the right side of the heat source unit 3 at this position, it will be fixed in an upright position. It has become.
In this way, the heat source unit 3 and the tank unit 4 are arranged in the housing 2 in an L-shape in a plan view that does not interfere with the dishwasher-side tank 6 and the dishwasher-side pump 7.

Then, when the dishwasher starts washing, the controller turns on the circulation pump 57 to circulate hot water between the heat exchanger 18 of the heat source unit 3 and the tank unit 4 via the circulation path 5. Let me. At the same time, the detection temperature in the tank unit 4 is monitored by the tank thermista 50, and if the detection temperature is less than 80 ° C., the burner is burned by the combustion unit 10 of the heat source unit 3, and the heat exchanger 18 flows through the heat exchange unit 11. The hot water and the combustion exhaust of the burner are exchanged for heat to heat the hot water in the tank unit 4 until the temperature reaches 80 ° C. Since the tank thermistors 50 and 50 are provided above and below the horizontal plate 49, the lower tank thermistor 50 can detect the temperature of hot water directly supplied to the dishwasher from the hot water pipe connection port 33. The tank thermistor 50 on the upper side can detect the average hot water temperature in the storage area B. As the detected temperature, either one may be monitored, or the average value of both detected temperatures may be monitored.
The combustion exhaust of the burner passes through the inner casing 17 of the heat exchange section 11, then enters the upper casing 21 of the exhaust section 12, passes through the first pipe 25 and the second pipe 26 of the exhaust pipe 22, and is the housing 2. It is discharged to the outside of.

On the other hand, when rinsing is performed on the dishwasher side during the heat retention control or after the heat retention control and the hot water in the tank unit 4 is supplied to the washing room by the operation of the rinsing pump, the float switch 41 inside the tank unit 4. (For example, the water level L2 shown in FIG. 7) is detected. Then, the controller opens the water solenoid valve 59 and supplies water from the water supply pipe 58 into the tank unit 4 until the water level L is detected by the float switch 41.
At this time, the water supplied from the water supply pipe connection port 32 is supplied to the passage area A in front of the upper partition plate 44 and the inclined partition plate 45, and therefore immediately mixes with the hot water stored in the storage area B. There is no such thing, and the decrease in the hot water temperature in the storage area B is suppressed. Then, when the heat retention control is executed, the relatively low temperature hot water in the passage region A is sent from the outgoing pipe connection port 35 to the heat source unit 3 and heated by the heat exchange unit 11. Therefore, in the heat exchanger 18 of the heat exchange unit 11, the amount of heat from the burner can be efficiently applied, and boiling due to overheating is less likely to occur.

Since the hot water heated by the heat exchange unit 11 flows in from the return pipe connection port 36 at the lower rear part of the storage area B away from the passage area A, it becomes difficult to mix with the water in the passage area A and the decrease in hot water temperature is suppressed. Be done. Therefore, the heat is efficiently kept in the storage area B. In particular, since the rear inclined plate 51 is provided on the front side of the return pipe connection port 36, it becomes difficult for the inflowing high-temperature hot water to flow directly to the hot water outlet pipe connection port 33, and the hot water temperature in the storage area B becomes uniform. It is planned.

When the heat source unit 3 needs maintenance, if the front wall of the housing 2 is removed, the combustion unit 10, the heat exchange unit 11, and the exhaust unit 12 are exposed to the front surface as shown in FIG. Therefore, you can easily access the required parts. In particular, in the exhaust unit 12, since the CO sensor 24 is also exposed on the front surface, it can be easily replaced or cleaned.
If it becomes necessary to remove the heat source unit 3 from the housing 2, the quick fastener 61 connecting the forward pipe 55 and the return pipe 56 at the intermediate portion can be removed to easily move the heat source unit 3 forward. Can be pulled out to. If the tank unit 4 is also pulled forward as it is, the locking plate 37 is automatically disengaged from the support bar 80, so that the tank unit 4 can be easily taken out.

[Effect of the invention relating to the partition plate of the tank unit]
As described above, according to the booster 1 of the above-described embodiment, the water supply pipe connection port 32 returns to the front side at the upper part of the tank unit 4, and the outbound pipe connection port 35 returns to the front side at the lower part of the tank unit 4. The pipe connection port 36 is provided at the lower part of the tank unit 4 toward the rear side, respectively, and inside the tank unit 4, the inside of the tank unit 4 is a passage on the front side including the water supply pipe connection port 32 and the outbound pipe connection port 35. A partition plate 46 for partitioning the region A and the storage region B on the rear side including the return pipe connection port 36 is provided, and the lower communication portion 47 partially communicates the passage region A and the storage region B with the partition plate 46. Since the upper communication portion 48 is provided and the hot water outlet pipe connection port 33 is provided in the storage area B, the partition plate 46 can be used to distinguish between the passage area A on the water supply side and the storage area B on the heat retention and hot water supply side. Therefore, while keeping the hot water at a high temperature of 80 ° C. in the storage region B of the tank unit 4, it is possible to supply the hot water at a relatively low temperature from the passage region A to the heat source unit 3 to heat it. Therefore, the heating efficiency of the heat source unit 3 can be improved, and the possibility of boiling due to overheating can be reduced.

In particular, here, the upper partition plate 44 that hangs downward after the partition plate 46 is inclined so as to narrow the passage region A from the upper inner surface of the tank unit 4 downward, and the lower inner surface of the tank unit 4. Since the passage region A is inclined so as to be narrowed from the non-contact position of the above to the upper side, and the upper end includes the lower end of the upper partition plate 44 and the inclined partition plate 45 which is not in contact with each other, the space between the two regions is provided. It is possible to secure the flow of hot water in the tank unit 4 and to perform a partition that does not affect the detection of the water level in the tank unit 4.

[Example of changing the tank unit]
In the above embodiment, the tank unit is made of resin, but it may be made of metal. Although FIGS. 8 to 10 show an example thereof, the same components as those of the tank unit 4 of the above-described embodiment are designated by the same reference numerals, and duplicate description will be omitted.
The tank unit 4A shown in FIGS. 8 to 10 is a flat box-shaped body that is thin to the left and right and is surrounded by metal plates at the top, bottom, left, right, and front and back. It has a protruding shape. Inside the tank unit 4A, a water supply pipe connecting port 32 that protrudes forward from the front surface of the upper front side and an outgoing pipe connecting port 35 that opens to the side surface below the water supply pipe connecting port 32 are provided. Behind these connection ports, a metal partition plate 65 that partitions the inside into a passage region A on the front side and a storage region B on the rear side is hung downward from the upper inner surface of the tank unit 4A. The lower end of the partition plate 65 is in non-contact with the lower inner surface of the tank unit, and forms a communication portion 66 that communicates the passage area A and the storage area B behind the outbound pipe connection port 35.

Further, a side view U-shaped bent portion 67 projecting rearward is formed in a portion slightly above the middle portion of the partition plate 65, and the lower end of the bent portion 67 is formed behind the partition plate 65. An overflow pipe 68 projecting from the lower surface of the tank unit 4A penetrates and is supported. The upper end of the overflow pipe 68 is higher than the water level L detected by the float switch 41 behind the overflow pipe 68.
Further, in the storage area B, a hot water outlet pipe connection port 33 is provided behind the overflow pipe 68 at the lower part of the tank unit 4A, a tank thermistor 50 is provided above the hot water outlet pipe connection port 33, and the return pipe connection port 36 is a partition plate. It is provided between the 65 and the overflow pipe 68 above the communication portion 66.
On the other hand, a locking plate 69 that locks to the support bar 80 is fixed backward to the rear of the upper end of the tank unit 4A, and base plates 70 and 70 for maintaining an upright posture are outwardly facing each other at the front and rear of the lower end. It is fixed.

Also in this tank unit 4A, the water supplied from the water supply pipe connection port 32 is supplied to the passage area A in front of the partition plate 65, so that it does not immediately mix with the hot water stored in the storage area B. , The decrease in the hot water temperature in the storage area B is suppressed. Then, when the heat retention control is executed, the relatively low temperature hot water in the passage region A is sent from the outgoing pipe connection port 35 to the heat source unit 3 and heated by the heat exchange unit 11. Since the hot water heated by the heat exchange unit 11 also flows into the storage region B from the return pipe connection port 36, the decrease in the hot water temperature is suppressed and the heat retention control is efficiently performed.

[Other changes]
The structure of the tank unit is not limited to the above-mentioned form and modification example, and can be changed as appropriate. It may be formed in an L shape or a curved shape instead of a shape. It does not have to be flat.
Further, as for the internal partition plate, for example, in the form of FIG. 7, the upper partition plate and the inclined partition plate are connected to eliminate the upper communication portion, the space between the lower communication portions is widened, and the partition plate is linear or curved. Can be formed into, etc. It is also possible to eliminate the horizontal plate and the rear inclined plate, or to make one tank thermistor. The position and shape of each connection port can also be changed as appropriate, for example, by reversing the arrangement of the front and back and left and right of each connection port.

Further, in the above embodiment, the heat source unit is arranged on the right side in the housing and the tank unit is also arranged on the right side behind the tank unit. On the contrary, the heat source unit is arranged on the left side in the housing and the tank unit is also arranged. It may be placed on the left side behind it. Further, the heat source unit and the tank unit may be arranged on the left and right instead of the front and back. As a heating means, other than a burner can be adopted.
In the above embodiment, the dishwasher-side tank and the main body-side devices such as the dishwasher-side pump are housed in the housing, but there is no main body-side device, and the heat source unit and the heat source unit are housed in the dedicated housing. The invention relating to the partition plate can be applied even to a booster in which a tank unit and a circulation path are housed.

[Effect of the invention relating to the arrangement of the heat source unit and the tank unit]
As described above, according to the booster 1 of the above-described embodiment, the heat source unit 3 is arranged on the front side in the housing 2 on the right side, and the tank unit 4 is flat in which one thickness is smaller than the other thickness in a plan view. Since it is formed in a box shape and is arranged in an upright state along the right side surface of the housing 2 on the rear side of the heat source unit 3 in the longitudinal direction, the heat source unit 3 and the tank unit are arranged even in a narrow space inside the housing 2. 4 can be arranged without interfering with the dishwasher side tank 6 and the dishwasher side pump 7. Further, since the heat source unit 3 is installed on the front side in the housing 2, access is easy and good maintainability can be ensured.
In particular, here, since the locking plate 37 for locking to the support bar 80 provided in the housing 2 at the installation position in the housing 2 is provided at the rear portion of the tank unit 4, the tank unit 4 is provided with a locking plate 37. It can be easily taken in and out.

[Other changes]
Also in the invention relating to the arrangement of the heat source unit and the tank unit, the structure of the tank unit is not limited to the above-mentioned form and modification example, and can be appropriately changed.
Further, in the above embodiment, the heat source unit is arranged on the right side in the housing and the tank unit is also arranged on the right side behind the tank unit. On the contrary, the heat source unit is arranged on the left side in the housing and the tank unit is also arranged. It may be placed on the left side behind it.

1 ... Dishwasher booster, 2 ... Housing, 3 ... Heat source unit, 4, 4A ... Tank unit, 5 ... Circulation path, 6 ... Dishwasher side tank, 7 ... Dishwasher Side pump, 10 ... combustion part, 11 ... heat exchange part, 12 ... exhaust part, 13 ... lower casing, 16 ... cover, 18 ... middle casing, 18 ... heat exchanger, 21 ... upper Casing, 30 ... convex part, 31 ... concave, 32 ... water supply pipe connection port, 33 ... hot water supply pipe connection port, 34,68 ... overflow pipe, 35 ... outbound pipe connection port, 36 ... return pipe Connection port, 41 ... float switch, 44 ... upper partition plate, 45 ... inclined partition plate, 46, 65 ... partition plate, 47 ... lower communication part, 48 ... upper communication part, 50 ... tank thermistor , 55 ... Outbound pipe, 56 ... Return pipe, 57 ... Circulation pump, 58 ... Water supply pipe, 60 ... Hot water supply pipe, 61 ... Quick fastener, 66 ... Communication section, A ... Passage area, B・ ・ Storage area.

Claims (2)

It is placed inside the housing that houses the main unit used in the dishwasher.
A heat source unit equipped with a burner and a heat exchanger, a tank unit capable of storing hot water heated by the heat source unit, and a circulation path provided with a circulation pump to circulate hot water between the heat source unit and the tank unit. And is a dishwasher booster that includes
The heat source unit is arranged on the front side of the housing on either the left or right side.
The tank unit is formed in a flat box shape in which the thickness in a predetermined direction in a plan view is smaller than the thickness in a direction intersecting the predetermined direction, and the tank unit is formed in a flat box shape on the rear side of the heat source unit. While it is placed upright along the longitudinal direction on the side side ,
The circulation path is a forward pipe connected between the upstream end of the heat transfer tube of the heat exchanger and the longitudinal side surface of the tank unit, and the downstream end of the heat transfer tube and the longitudinal direction of the tank unit. Includes a return tube connected to and from the sides
In the forward pipe, the ends of the tank-side forward pipe connected to the tank unit and the heat source-side forward pipe connected to the heat source unit are abutted against each other in the front-rear direction, and the ends thereof are respectively. The quick fastener is engaged with the provided flange at the same time.
The return pipe is characterized in that a tank-side return pipe connected to the tank unit and a heat source-side return pipe connected to the downstream end of the heat transfer pipe are plugged and connected in the front-rear direction. Machine booster. The tableware according to claim 1, wherein a locking plate for locking to a locked portion provided in the housing is provided at a rear portion of the tank unit at an installation position in the housing. Booster for washing machine.

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