KR20220146389A - Pump and Dishwasher having the Same - Google Patents

Abstract

An objective of the present invention is to provide a pump that simultaneously performs functions of heating washing water and circulating washing water, and a dishwasher equipped with the pump. The present invention relates to a pump, which comprises: a partition wall which divides the inside of a body into two spaces; a first chamber located above the partition and provided with an inlet part through which water is introduced; a second chamber located above the partition wall and having a discharge part through which water is discharged; a communication hole provided in the partition wall to communicate the first chamber and the second chamber; an impeller provided in the second chamber to move the water inside the first chamber to the discharge part; a housing detachably provided to the body to form a bottom surface of the first chamber and provided as a conductor; and a heater which heats the housing.

Description

Pump and Dishwasher having the Same}

The present invention relates to a pump and a dishwasher provided with the pump.

Dishwasher is a home appliance that removes foreign substances remaining on the object to be washed by spraying washing water on the object to be washed.

Conventional dish washing machines include a tub that provides a washing space, a rack provided in the tub to receive a washing object, a jet arm that sprays washing water into the rack, a sump that stores washing water, and a sump that supplies washing water stored in the sump to the jet arm. It is common to include a pump.

On the other hand, some of the conventional dishwashers can wash or sterilize the object to be washed by using heated washing water (hot water) or supplying steam to the object to be washed.

Dishwasher using hot water generally generates hot water by heating washing water stored in the sump through a heater provided inside the sump.

In this case, since the heater is exposed inside the sump and has to contact the washing water, the conventional dishwasher has a disadvantage in that the water level inside the sump must be controlled so that the heater is not exposed in order to prevent the heater from overheating.

In addition, since heat transfer was possible only when the heater was in contact with washing water, foreign substances were attached to the surface of the heater to decrease heat exchange efficiency, or the surface of the heater was corroded to reduce durability.

Meanwhile, a dishwasher using steam is divided into a case in which steam is generated through a heater provided in the sump and a case in which steam is generated by providing a separate steam generator.

A dishwasher generating steam through a heater provided in the sump has the same problem as a dish washing machine generating hot water through a heater provided in the sump.

On the other hand, when the steam generator is provided as a storage unit for storing water and a heater provided inside the storage unit to heat water, a dishwasher generating steam through a separate steam generator is also provided through a heater provided inside the sump. Dishwashers that generate hot water have the same problems.

An object of the present invention is to provide a pump that simultaneously performs a function of heating washing water and a function of circulating washing water, and a dishwasher provided with the pump.

Another object of the present invention is to provide a pump having a structure that facilitates heat exchange between a heater and washing water, and a dishwasher provided with the pump.

Another object of the present invention is to provide a pump capable of preventing overheating of a heater without adjusting the level of washing water and a dishwasher equipped with the pump.

Another object of the present invention is to provide a pump capable of minimizing the amount of washing water for producing hot water or steam, and a dishwasher equipped with the pump.

Another object of the present invention is to provide a pump capable of preventing a decrease in efficiency and durability of a heater for heating washing water, and a dishwasher equipped with the pump.

Another object of the present invention is to provide a pump equipped with a detachable heater and a dishwasher equipped with the pump.

In order to solve the above problems, the present invention is a body; a partition wall dividing the inside of the body into two spaces; a first chamber positioned above the partition wall and provided with an inlet through which water is introduced; a second chamber positioned above the partition wall and provided with a discharge part for discharging water; a communication hole provided in the partition wall to communicate the first chamber and the second chamber; an impeller provided in the second chamber to move the water inside the first chamber to the discharge part; a housing detachably provided on the body to form a bottom surface of the first chamber and provided with a conductor; It provides a pump comprising a; heater for heating the housing.

The housing may include a receiving groove positioned outside the first chamber to accommodate the heater; It may further include a; is provided to surround the receiving groove and coupled to the body.

The receiving groove may be provided by bending the housing toward the inside of the first chamber.

The fastening portion includes: a first extension extending from an edge of the receiving groove toward a direction away from the receiving groove; It may further include a; coupling the first extension to the body, the first extension is provided by bending the second extension.

The pump of the present invention may further include a flange protruding from the first extension to prevent the water leaking from the body from moving to the heater.

The present invention pump is provided along the circumferential surface of the body, the support portion is provided to protrude from the surface of the body; A plurality of third extension portions provided at the free ends of the second extension portions spaced apart from each other by a predetermined distance and configured to couple the housing to the support portion when bent toward the support portion may be further included.

The present invention pump is provided in the second extension, the projection receiving groove having a width greater than the distance between the one third extension and the other third extension; It may further include a protrusion provided on the support portion and inserted into the protrusion receiving groove.

The present invention pump is provided to pass through the first chamber steam outlet for discharging steam; A guider for dividing the inner space of the first chamber into a first area in which the steam outlet is located and a second area in which the steam outlet is not located according to the water level inside the first chamber; The first chamber may be divided such that a volume of the first area is greater than a volume of the second area.

The heater, the housing, the first chamber, and the second chamber may be sequentially stacked along the height direction of the body to form a vertical arrangement relationship.

The present invention is a tub in which the object to be washed is accommodated; a jet arm that sprays washing water to the washing target; a sump in which washing water is stored; a pump for supplying the washing water stored in the sump to the jet arm; further comprising: a body; a partition wall dividing the inside of the body into two spaces; a first chamber positioned under the partition wall and having an inlet portion communicating with the sump; a second chamber positioned above the partition wall and provided with a discharge unit communicating with the jet arm; a communication hole provided in the partition wall to communicate the first chamber and the second chamber; an impeller provided in the second chamber to move the washing water inside the first chamber to the discharge unit; a housing detachably provided on the body to form a bottom surface of the first chamber and provided with a conductor; It provides a dishwasher comprising a; heater for heating the housing.

The dishwasher of the present invention includes a support part protruding from the surface of the body along the circumferential surface of the body; a receiving groove provided in the housing to accommodate the heater and positioned outside the first chamber; a first extension portion extending from an edge of the receiving groove toward a direction away from the receiving groove; a second extension provided by bending the first extension; A plurality of third extension portions provided at the free ends of the second extension portions spaced apart from each other by a predetermined distance and configured to couple the housing to the support portion when bent toward the support portion may be further included.

The dishwasher of the present invention may further include a flange protruding from the first extension to surround the receiving groove and preventing the washing water leaking from the body from moving to the heater.

The dishwasher of the present invention includes: a protrusion receiving groove provided in the second extension part and having a width greater than the distance between one third extension part and the other third extension part; It may further include a protrusion provided on the support portion and inserted into the protrusion receiving groove.

The dishwasher of the present invention includes: a steam outlet provided to pass through the first chamber to discharge steam; A guider for dividing the inner space of the first chamber into a first area in which the steam outlet is located and a second area in which the steam outlet is not located according to the water level inside the first chamber; The first chamber may be divided such that a volume of the first area is greater than a volume of the second area.

The heater, the housing, the first chamber, and the second chamber may be sequentially stacked along a height direction of the pump to form a vertical arrangement relationship.

The present invention can achieve the effect of providing a pump that simultaneously performs a function of heating washing water and a function of circulating washing water, and a dishwasher equipped with the pump.

In addition, the present invention can achieve the effect of providing a pump having a structure for easy heat exchange between a heater and washing water, and a dishwasher provided with the pump.

In addition, the present invention can achieve the effect of providing a pump capable of preventing overheating of a heater without adjusting the level of washing water and a dishwasher equipped with the pump.

In addition, the present invention can achieve the effect of providing a pump capable of minimizing the amount of washing water for producing hot water or steam, and a dishwasher equipped with the pump.

In addition, the present invention can achieve the effect of providing a pump capable of preventing a decrease in efficiency and durability of a heater for heating washing water, and a dishwasher equipped with the pump.

In addition, the present invention can achieve the effect of providing a pump equipped with a detachable heater and a dishwasher equipped with the pump.

1 shows an example of a dishwasher according to the present invention.
2 shows an example of the pump of the present invention.
3 shows an example of the coupling structure of the body and the heater assembly.
4 to 6 show an example of a partition wall provided in the pump.
7 and 8 show another embodiment of the partition wall.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Unless otherwise defined, all terms in this specification have the same general meaning as understood by those skilled in the art to which the present invention belongs, and if a term used in this specification conflicts with the general meaning of the term is subject to the definition used herein.

On the other hand, the configuration or control method of the device to be described below is only for explaining the embodiment of the present invention, not for limiting the scope of the present invention, the same reference numerals used throughout the specification refer to the same components indicate the

The present invention relates to a pump (8) capable of simultaneously performing a function of moving washing water and a function of heating washing water, and a device provided with the pump. It is shown as an example.

The pump 8 of the present invention may be provided in various devices other than the dishwasher, but hereinafter, for convenience of explanation, a case in which the pump 8 is provided in the dishwasher 100 will be described.

As shown in FIG. 1, the dishwasher 100 includes a cabinet 1, a tub 11 provided inside the cabinet to provide a washing space, spray arms 3 and 5 for spraying washing water to a washing object, and the It may be provided as a pump (8) for supplying washing water to the spray arm.

A rack in which the object to be washed is accommodated may be provided inside the tub 11, wherein the rack includes an upper rack 191 provided in an upper region of the tub, and a lower rack 193 provided under the upper rack. ) can be provided.

Since the tub 11 is opened and closed by the door 16 provided on one side of the cabinet, the user opens the tub 11 through the door 16 and then moves the racks 191 and 193 to the tub 11 . can be withdrawn from

When the rack is provided with an upper rack 191 and a lower rack 193 , the spray arm is an upper arm 3 that sprays washing water to the upper rack 191 , and a lower part that sprays washing water to the lower rack 193 . It may be provided as an arm (5).

The washing water (the washing water remaining in the tub) sprayed to the washing object from the jet arms 3 and 5 may be recovered to the sump 13 .

The sump 13 is provided under the tub 11 to store washing water, and may be distinguished from the tub 11 through the sump cover 15 . In this case, the sump cover 15 may be provided with a recovery hole 151 for communicating the inside of the tub 11 with the inside of the sump 13 .

Meanwhile, the sump 13 is connected to a water supply source (not shown) through a water supply passage 135, and the water supply passage 135 is to be opened and closed by a water supply valve 136 controlled by a controller (not illustrated). can

The washing water stored in the sump 13 is discharged to the outside of the dishwasher through the drain passage 137 and the drain pump 139 .

The washing water stored in the sump 13 is supplied to the jet arms 3 and 5 through a pump 8 and a supply passage 7, and the supply passage 7 is a connection passage connected to the pump 8 ( 77 ), a first supply passage 71 connecting the connection passage and the upper arm 3 , and a second supply passage 73 connecting the connection passage and the lower arm 5 .

The upper arm 3 may be rotatably coupled to the first supply passage 71 , and the lower arm 5 may be rotatably coupled to the second supply passage 73 .

The first supply passage 71 and the second supply passage 73 may be provided by branching the connection passage 77 . In this case, the branching point of the first supply passage 71 and the second supply passage 73 . A switching valve 75 for controlling the opening and closing of each supply passage may be provided.

The pump 8 has a body 82 fixed inside the cabinet 1, and a space inside the body 82 is divided into a first chamber C1 and a second chamber C2 inside the body 82. a partition wall 84 for forming an inlet portion 841 connecting It may be provided with a heater assembly (H) provided on the surface.

As shown in FIG. 2 , the body 82 may be provided in a cylindrical shape with an open upper surface and a lower surface, and the open surface 821 provided on the upper portion of the body 82 has a cover on the upper surface of the second chamber. 823 is provided, and the heater assembly (H) is detachably coupled to the open surface (825, the bottom surface of the first chamber) provided in the lower portion of the body.

Since the heater assembly H forms the bottom surface of the first chamber C1, the present invention can provide a pump 8 capable of simultaneously performing a washing water heating function and a washing water circulating function. Furthermore, since the heater assembly (H) is detachable from the outside of the pump (8) to the body (82), the present invention can provide a pump (8) that is easy to assemble or disassemble the heater assembly (H).

The impeller 85 is a means for moving the washing water flowing from the first chamber C1 to the second chamber C2 through the communication hole 86 to the discharge part 849, and is located outside the body 82. It can be rotated by the provided driving unit 87 .

The driving unit 87 may be provided as a motor 871 fixed to the cover 823 , and the rotating shaft 873 of the motor may pass through the cover 823 and be fixed to the impeller 85 .

As shown in FIG. 3 , the heater assembly H includes a housing 81 forming the bottom surface of the first chamber C1 and a heater positioned outside the first chamber C1 to heat the housing. (83) may be provided. Accordingly, the heater 83 , the housing 81 , the first chamber C1 , and the second chamber C2 are sequentially stacked along the height direction of the body 82 to form a mutually perpendicular arrangement relationship. will form

The housing 81 is preferably made of a conductor such as metal so that the heat energy supplied by the heater 83 can be effectively supplied to the washing water inside the first chamber C1.

The housing 81 includes a receiving groove 811 for positioning the heater 83 outside the first chamber C1, and a fastening part 812 for fixing the housing 81 to the body 82. can do.

The receiving groove 811 is preferably provided in a shape that maximizes the surface area of the housing 81 that exchanges heat with the washing water. is shown as an example.

In order to prevent the heater 83 inserted into the receiving groove 811 from being exposed to the outside of the receiving groove 811 , the present invention may further include a heater cover 815 fixed to the housing 81 . have.

The heater cover 815 is a means to block the supply of washing water or foreign substances to the heater 83 , as well as prevent parts of the dishwasher near the pump 8 from coming into direct contact with the heater 83 .

The fastening part 812 includes a first extension part 8121 extending from an edge of the accommodating groove 811 in a direction away from the accommodating groove 811, and attaching the first extension part 8121 to the lower open surface. It may be provided as a second extension 8123 coupled to the 825 .

The second extension portion 8123 may be provided by bending the first extension portion 8121 . In this case, the first extension portion 8121 is the body 82 provided with the lower open surface 825 . Supporting one end of the, the second extension portion 8123 will accommodate the circumferential surface of the body (82).

A support portion 827 protruding from the body 82 may be provided on a circumferential surface of the body 82 . In this case, the fastening portion 812 connects the second extension portion 8123 to the support portion 827 . ) may further include a third extension 8125 coupled to the.

The third extension 8125 is preferably provided at the free end of the second extension 8123 and spaced apart from each other by a predetermined distance 8127 .

As described above, since the housing 81 is a means for forming the bottom surface of the body 82 (the bottom surface of the first chamber), the washing water inside the first chamber C1 leaks through the fastening part 812 . is likely to be Accordingly, it is necessary to prevent the washing water discharged from the first chamber C1 from moving to the heater 83 . For this purpose, the housing 81 may further include a flange 817 .

The flange 817 may be provided anywhere in the housing 81 as long as the above-described function can be implemented. did it

The flange 817 shown in FIG. 3 is characterized in that it protrudes from the edge of the first extension portion 8121 toward the bottom surface of the cabinet 1 and surrounds the accommodating groove 811 . Therefore, since the washing water remaining on the surface of the second extension part 8123 will move away from the heater 83 through the flange 817 , in the present invention, the washing water of the first chamber C1 is connected to the fastening part 812 . ), even if it leaks, it is possible to prevent the washing water from moving to the heater 83 .

The heater 83 may include a heater body 831 that generates thermal energy when current is supplied, and a first terminal 833 and a second terminal 835 that supply current to the heater body. The first terminal 833 and the second terminal 835 are preferably exposed to the outside of the receiving groove 811 , but the heater body 831 is provided so as not to be exposed to the outside of the receiving groove by the heater cover 815 . It is preferable to be

Since the heater 83 provided in the present invention is located outside the first chamber C1, it does not come into contact with the washing water. Therefore, according to the present invention, it is possible to prevent problems such as deterioration of heat exchange efficiency between washing water and the heater due to adhesion of foreign substances to the surface of the heater 83 or deterioration of durability due to corrosion of the surface of the heater.

In order to facilitate the assembly of the heater assembly (H) and the body (82), the pump (8) may further include a position fixing part (89). The position fixing part 89 may be provided with a protrusion 891 provided on the support part 827 of the body, and a protrusion receiving groove 893 provided on the second extension part 8123 to accommodate the protrusion.

The protrusion 891 may be provided along the height direction of the body 82, and the protrusion accommodating groove 893 includes a gap 8127 between one third extension part and the other third extension part. It may be provided to have the same width.

However, when it is necessary to keep the assembly direction of the heater assembly H constant (eg, when it is necessary to prevent the two terminals 833 and 835 provided in the heater from facing the sump 13), the protrusion It is preferable that the width of the receiving groove 893 and the interval 8127 between the third extensions are set differently from each other. 3 illustrates an example in which the width of the protrusion receiving groove 893 is greater than the distance 8127 between the third extensions.

In the heater assembly H having the above structure, since the housing 81 forms the bottom surface of the first chamber C1, the impeller 85 is ), hot water (heated washing water) can be supplied to the spray arms 3 and 5 .

In this case, in the present invention, since the heater 83 heats the housing 81 forming the bottom surface of the first chamber C1, it is possible to prevent the heater from being overheated even without adjusting the water level inside the first chamber. In addition, it is possible to minimize the amount of washing water that must be supplied for steam or hot water production.

Such an effect will be maximized when the housing 81 of the heater assembly H is provided to form a plane parallel to the bottom surface of the cabinet 1 . That is, if the housing 81 is fixed to the body 82 to form a horizontal plane, the above-described effects will be maximized.

Since the above-described pump 8 has a heater assembly H on the bottom surface of the first chamber C1, if only the heater 83 is operated after supplying a certain amount of washing water to the first chamber C1, the pump (8) may also perform the function of a steam generator.

However, in order for the pump 8 to also perform a function of generating steam, the pump 8 has a steam outlet 843 for discharging the steam generated inside the first chamber C1 to the outside of the first chamber C1. more should be provided.

As shown in FIG. 1 , the steam outlet 843 may communicate with the tub 11 through the steam supply unit 6 , and the steam supply unit 6 has a nozzle 61 fixed to the tub 11 . , it may be provided with a supply pipe 63 connecting the nozzle 61 and the steam outlet 843 . The steam outlet 843 may be provided at a position lower than the partition wall 84 and higher than the inlet portion 841 .

On the other hand, when the steam outlet 843 is provided in the first chamber C1, at least one of the steam outlet 843 and the supply pipe 63 is a valve for preventing outside air from flowing into the first chamber C1. (844) should be further provided.

When outside air flows into the first chamber C1 through the steam outlet 843 , the water pressure of the washing water sprayed from the jet arms 3 and 5 may be lowered or the washing water may not be supplied to the jet arms. This is because if there is no valve 844 in the steam outlet 843 , air will be introduced into the first chamber C1 when the impeller 85 rotates.

The valve 844 should be provided so that the fluid inside the first chamber C1 is discharged to the outside of the first chamber C1, but it blocks the inflow of the external fluid into the first chamber C1. That is, the valve 844 may be provided as a check valve that opens the steam outlet 843 or the steam supply unit only when the pressure inside the first chamber C1 is equal to or greater than a preset reference pressure.

However, in the pump 8 having the above structure, the steam inside the first chamber C1 may be supplied to the tub 11 through the supply pipe 63, but the injection arm 3 communicating with the first chamber C1 , 5) and the recovery hole 151 may also be supplied to the tub 11 .

The steam inside the first chamber C1 is connected to the pump 8 through the steam supply unit 6 , the injection arms 3 and 5 connected to the pump 8 through the supply passage 7 , and the sump 13 . The feature of being supplied to the tub through the recovery hole 151 may be advantageous in that steam can be uniformly supplied to the inside of the tub 11 by spraying steam at a plurality of points. There may be a problem that the required amount of steam cannot be supplied to the tub because it is highly likely to condense while moving along the tub.

In order to compensate for the above disadvantages, it is necessary to design the pump 8 so that most of the steam in the first chamber C1 is supplied to the tub 11 through the supply pipe 63 . In the present invention, the pump 8 may further include a guider on the partition wall 84 so that most of the steam in the first chamber C1 can be supplied to the tub 11 through the supply pipe 63 .

4 to 6 show an example of the guider 88 .

As shown in FIG. 4 , the guider 88 is provided to protrude from the partition wall 84 toward the housing 81 , and the free end of the guider 88 is provided so as not to contact the housing 81 . .

The guider 88 moves the inner space of the first chamber C1 according to the water level inside the first chamber C1, the first area where the steam outlet 843 is located, and the steam outlet 843 is not positioned. It is a means of dividing into a second area that is not.

That is, as shown in FIG. 5 , when the water level inside the first chamber C1 is higher than the free end of the guider 88 , the space inside the first chamber C1 is first opened by the guider 88 . It is divided into an area C11 and a second area C13.

To make the amount of steam discharged to the outside of the first chamber C1 through the steam outlet 843 greater than the amount of steam discharged to the outside of the first chamber C1 through a flow path other than the steam outlet 843, The volume of the first region C11 is preferably set to be larger than the volume of the second region C13 as shown in FIG. 6 .

In this case, the heater 83 is preferably fixed to the housing 81 so that the length of the heater positioned in the first region C11 is longer than the length of the heater positioned in the lower part of the second region C13 . do. That is, the heater 83 is preferably fixed to the receiving groove 811 so that the first terminal 833 and the second terminal 835 are located in the area where the second area C13 is projected onto the housing 81 . do.

On the other hand, if the volume of the first region C11 and the volume of the second region C13 are to be set to be the same, the amount of heat generated by the heater 83 heating the washing water located in the first region C11 is Preferably, it is provided so as to be greater than the amount of heat generated by the portion for heating the washing water located in the second region C13.

The heater 83 with a different calorific value depending on the location can be implemented in various ways. The length of the heater provided to heat the washing water located in the first region C11 heats the washing water located in the second region C13. An example may be provided to be longer than the length of the heater provided to do so.

In addition, the heater 83 having a cross-sectional area located under the first region C11 is larger than the cross-sectional area of the heater 83 positioned under the second region C13. It may be an example of implementing (83).

As shown in FIG. 6 , the guider 88 is positioned in the first area C11 and includes a base 884 surrounding a portion of an outer circumferential surface of the communication hole 86 , the first area C11 and the first area C11 . A first plate 881 connecting one end of the base 884 and an inner circumferential surface of the first chamber C1 to distinguish two regions C13, and to distinguish the first region from the second region A second plate 883 connecting the other end of the base 884 and the inner circumferential surface of the first chamber may be provided.

In this case, the free end of the base 884 , the free end of the first plate 881 , and the free end of the second plate 883 protrude from the partition wall 84 so as not to contact the housing 81 . should be This is to allow the guider 88 to divide the inside of the first chamber C1 into a first area and a second area only when the water level inside the first chamber C1 is higher than the free end of the guider 88 . Preferably, the first plate 881 and the second plate 883 partition the inside of the first chamber C1 so that the volume of the first area C11 is greater than the volume of the second area C13.

When the washing water is supplied to the first chamber C1, the guider 88 divides the first chamber C1 into a first area C11 and a second area C13. When the heater 83 operates in this state, steam will be generated in both the first region C11 and the second region C13 . However, since the volume of the first region C11 is larger than that of the second region C13 , most of the steam inside the first chamber C1 will be supplied to the tub 11 through the steam outlet 843 .

On the other hand, the above-described effect is obtained when the amount of heat generated by the heater that heats the first area C11 is greater than the amount of heat generated by the heater that heats the second area C13, the volume of the first area C11 and the second area C13 It can be expected even if the volume of is the same.

The guider 88 described above is useful in that it moves most of the steam inside the first chamber C1 to the tub 11 through the steam outlet 843, but the base 884 of the guider is located in the first area C11. ), a problem of making the flow path resistance of the second region C13 higher than the flow path resistance of the second region C13 may occur.

That is, because of the above-described imbalance in flow resistance, the amount of washing water moving to the communication hole 86 after passing through only the second region C13 rather than the amount of washing water moving to the communication hole 86 after passing through the first region C11. A problem may arise when the amount of

If the amount of washing water moving to the communication hole 86 after passing through the first region C11 is greater than the amount of washing water moving to the communication hole 86 after passing only the second region C13, the washing water is quickly discharged. Heating problems may occur. Therefore, the inlet 841 is preferably located in the first region C11 rather than the second region C13.

Meanwhile, if the inlet 841 cannot be positioned in the first region C11, the guider 88 is preferably designed in the form of FIG. 7 .

The guider 88 of FIG. 7 makes the flow path resistance of the first region C11 smaller than the flow path resistance of the second region C13, so that most of the washing water flowing into the first chamber C1 passes through the first region C11. It is characterized in that it is moved to the communication hole 86 after roughing.

That is, the guider 88 according to the present embodiment is located in the second region C13 and surrounds a portion of the outer peripheral surface of the communication hole 86, the first base 885, one end of the first base 885, and the second A first plate 881 connecting the inner circumferential surface of the first chamber C1 and a second plate 883 connecting the other end of the first base 885 and the inner circumferential surface of the first chamber C1 may be provided. .

Referring to FIG. 8 , in the guider 88 having the above-described structure, since the first base 885 is provided in the second region C13 , the flow resistance of the second region C13 is reduced in the first region C11 . ) is greater than the flow resistance of Accordingly, even if the inlet portion 841 is provided in the second region C13 , most of the washing water flowing into the first chamber C1 passes through the first region C11 and then moves to the communication hole 86 . will be. Through such a guider 88, the present invention can provide a pump that facilitates heat exchange between the heater and the washing water.

Furthermore, a first communication part 881a is provided on the first plate 881 so that the washing water flowing into the second region C13 can easily move to the first region C11, and the second plate 883 is provided. A second communication portion 883a may be provided.

The first communication part 881a may be provided such that the free end of the first plate is bent concavely toward the partition wall 84 , and the second communication part 883a has the free end of the second plate formed by the partition wall 84 . ) may be provided by being bent concavely toward. Therefore, the length from the partition wall 84 to the free end of the first communication part 881a is provided shorter than the length from the partition wall to the free end of the first plate 881, and from the partition wall 84 to the second communication part 881a ( The length to the free end of the 883a is preferably shorter than the length from the partition wall to the free end of the second plate 883 .

However, unlike the above, the first communication part 881a and the second communication part 883a may be provided with holes penetrating through each of the plates 881 and 883 .

On the other hand, the guider 88 according to the present embodiment is located in the first area C11 and connects one end of the first base 884 and the other end of the first base 884 to the second base 887. may include more.

In this case, the second base 887 is provided to surround the outer circumferential surface of the communication hole 86 , and the distance L2 from the partition wall 84 to the free end of the second base 887 is the partition wall It is preferable to be provided shorter than the distance (L1) to the free end of the first base (885).

The present invention may be modified and implemented in various forms, but the scope of the rights is not limited to the above-described embodiments. Therefore, if the modified embodiment includes the elements of the claims of the present invention, it should be regarded as belonging to the scope of the present invention.

100: dishwasher 1: cabinet 11: tub
13: sump 135: water supply passage 137: drain passage
15: sump cover 16: door 6: steam supply unit
61: nozzle 63: supply pipe 7: supply passage
8: pump 82: body 84: bulkhead
C1: first chamber 841: inlet 843: steam outlet
844: valve C2: second chamber 849: outlet
86: communication hole 88: guider 881: first plate
883: second plate 884: base 885: first base
887: second base 85: impeller 87: driving unit
H: heater assembly 81: housing 811: receiving groove
812: fastening portion 815: heater cover 817: flange
83: heater 89: position fixing part

Claims (10)

body;
an inlet for introducing water into the body;
a discharge unit for discharging water inside the body;
an impeller that is rotatably provided inside the body, introduces water into the body through the inlet, and moves the water inside the body to the outlet;
a housing provided as a conductor to form a bottom surface of the body;
a heater provided to heat the housing; and
The pump comprising a; steam outlet provided to discharge the steam generated in the operation of the heater to the outside of the body, the steam outlet provided to be located at a point higher than the inlet. According to claim 1,
The pump, characterized in that the discharge portion is provided to be located at a higher point than the inlet portion. 3. The method of claim 2,
and a valve provided at the steam outlet to allow the fluid inside the body to be discharged to the outside, and to block the fluid from being introduced into the body. According to claim 1,
A guider for dividing the body internal space into a first area in which the steam outlet is located and a second area in which the steam outlet is not located according to the water level inside the body; the pump characterized in that it further comprises. 5. The method of claim 4,
The pump, characterized in that the volume of the first area is set to be larger than the volume of the second area. 3. The method of claim 2,
The heater is a pump, characterized in that the length of the portion for heating the liquid located in the first region is longer than the length of the portion for heating the liquid located in the second region. 7. The method according to any one of claims 1 to 6,
The housing is provided bent toward the inside of the body, the receiving groove located outside the body; further comprising,
The heater is fixed to the receiving groove, the pump characterized in that it is located outside the body. 8. The method of claim 7,
A fastening part provided in the housing to surround the receiving groove and coupled to the body; further comprising, the fastening part
a first extension portion extending from an edge of the receiving groove toward a direction away from the receiving groove;
a second extension coupling the first extension to the body, the second extension provided by bending the first extension; and
and a flange protruding from the first extension to prevent the washing water leaking from the body from moving to the heater. a tub in which the object to be washed is accommodated;
a jet arm that sprays washing water to the washing target;
a sump in which washing water is stored; and
a pump for supplying the washing water stored in the sump to the spray arm;
body;
an inlet for introducing water stored in the sump into the body;
a discharge unit for supplying water inside the body to the jet arm;
an impeller that is rotatably provided inside the body, introduces water into the body through the inlet, and moves the water inside the body to the outlet;
a housing provided as a conductor to form a bottom surface of the body;
a heater provided to heat the housing; and
and a steam outlet provided in the body to discharge the steam generated during operation of the heater to the outside of the body, the steam outlet being provided in the body to be positioned higher than the inlet. 10. The method of claim 9,
and a valve provided at the steam outlet to allow the fluid inside the body to be discharged to the outside and to block the fluid from being introduced into the body.

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