KR20170012945A - Dishwasher - Google Patents

Abstract

The present invention provides a washing machine comprising: a tub inserted into a receiving part through an opening face and provided with a tub for receiving a washing object, a spraying part for spraying washing water to a washing object, and a space for storing washing water, A water supply passage portion that is provided in the housing and connects at least one of the turbine and the sump to a water supply source; And a guider for preventing the housing from colliding with the accommodating portion when the tub is inserted into the accommodating portion.

Description

Dishwasher {DISHWASHER}

The present invention relates to a dishwasher.

The dishwasher is a household appliance that removes foreign matter remaining on the object to be cleaned by spraying washing water on the object to be cleaned.

Conventionally, a dishwasher includes a tub provided with a washing space, a rack provided in the tub for receiving a washing object, a spraying arm for spraying washing water into the rack, a sump for storing washing water, and washing water stored in the sump, It is common to include pumps.

Meanwhile, in conventional dishwashers, cleaning objects can be cleaned or sterilized by using a heated washing water (hot water) to wash objects to be cleaned or steam to be supplied to objects to be cleaned.

In the dishwasher using hot water, hot water was generated by heating the washing water stored in the sump through a heater provided inside the sump. In this case, since the heater has to be exposed to the inside of the sump 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 to prevent the heater from overheating.

In addition, since heat transfer is possible only when the heater is in contact with the washing water, foreign matter adheres to the surface of the heater to lower the heat exchange efficiency, and the surface of the heater is corroded and durability is deteriorated.

Meanwhile, the dishwasher using steam is divided into a case where steam is generated through a heater provided inside the sump and a case where steam is generated by having a separate steam generator.

The dishwasher generating steam through the heater provided inside the sump has the same problem as the dishwasher generating hot water through the heater provided in the sump. In the case where the steam generator is provided as a storage unit for storing water and a heater for heating water, the dishwasher for generating steam through a separate steam generator also supplies hot water through a heater provided inside the sump, There is the same problem as the dishwasher that generates.

Conventionally, a sump provided in a dishwasher is provided not only for storing washing water supplied from a water supply source but also for recovering washing water sprayed from a spray gun to a washing object. As a method for supplying washing water to the sump, There was a method of supplying wash water (tub water type) and a method of directly connecting a sump and a water source (sump water type).

Unlike the tub water supply type, the sump water supply type has a problem that the wash water stored in the sump moves in the direction of the water supply source when the negative pressure is generated in the water supply source (the wash water is discharged from the sump).

SUMMARY OF THE INVENTION The present invention provides a dishwasher in which wash water stored in a sump is prevented from being discharged to the outside of a sump even when a negative pressurization occurs in the water source.

It is another object of the present invention to provide a dishwasher having a flow path portion for preventing discharge of wash water stored in a sump to the outside of a sump even when a negative pressure is generated in a water supply source.

It is another object of the present invention to provide a dishwasher capable of preventing breakage of a flow path portion during assembly and installation.

It is another object of the present invention to provide a dishwasher which simultaneously performs a function of heating washing water and a function of circulating washing water.

In order to solve the above-mentioned problems, the present invention provides an air conditioner comprising: an accommodating portion having an opening; A tub inserted into the accommodating portion through the opening, the tub being accommodated in an object to be cleaned; A spraying part for spraying washing water to the object to be cleaned; A sump which provides a space for storing wash water and through which the wash water injected into the tub is recovered; A housing fixed to an outer circumferential surface of the tub and positioned between the housing portion and the tub; A water supply passage portion provided in the housing and connecting at least one of the tub and the sump to a water supply source; And a guider for preventing the housing from colliding with the accommodating portion when the tub is inserted into the accommodating portion.

The guider may include a guider body extending from the housing and a bending portion bent at a free end of the guider body.

The guider body may be positioned in the same plane as the housing.

The receiving portion may be provided as a cabinet forming an outer appearance of the tub.

The receiving portion may be provided with furniture or a wall having a space in which the tub can be accommodated.

The housing further includes a first communicating part for communicating the tub with the inside of the housing, wherein the water supply channel part is connected to a water supply channel connected to a water supply source; A first flow path communicating the water supply flow path and the first communication portion; And a second flow path for guiding the wash water supplied from the water supply path to the sump.

The present invention may further comprise: a water supply connection pipe connecting the second flow path and the sump; And a water softener provided in the water connection pipe to lower the hardness of the wash water.

The present invention may further include a second communicating part for communicating the inside of the housing with the outside of the housing; A drainage passage provided in the housing for guiding the wash water discharged from the sump to the outside of the receiving portion and passing through a position higher than a maximum water level set in the sump; And a siphon brake that communicates the drain passage and the second communication portion in accordance with the pressure inside the drainage passage.

The present invention provides a washing machine comprising: a first chamber into which wash water stored in the sump flows; A second chamber communicating with the first chamber and the jetting section; An impeller rotatably installed in the second chamber for moving wash water flowing into the first chamber to the spray portion; A heat transfer part forming a bottom surface of the first chamber, the heat transfer part being attachable to and detachable from the first chamber; And a heating unit that is fixed to the heat transfer unit and is located outside the first chamber and heats the heat transfer unit.

The present invention can provide an improved dishwasher in which the wash water stored in the sump is prevented from being discharged to the outside of the sump even if a negative pressure is generated in the water supply source.

Further, the present invention can provide an improved dishwasher having a flow path portion for preventing the wash water stored in the sump from being discharged to the outside of the sump even if a negative pressure is generated in the water supply source.

Further, the present invention can provide an effect of providing a dishwasher capable of preventing breakage of the flow path portion during assembly or installation.

Further, the present invention can provide an effect of providing a dishwasher that simultaneously performs a function of heating the washing water and a function of circulating the washing water.

1 shows an example of the dishwasher of the present invention.
2 and 3 show an example of the flow path portion provided in the present invention.
Fig. 4 shows an example of a guider provided in the flow path portion.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that the present invention is not limited to the details of the embodiments described below, .

1, the dishwasher according to the present invention includes a receiving portion 1, a tub 11 provided inside the receiving portion for receiving a washing object, a jetting portion 3 for jetting the washing water to the object to be cleaned, And a circulation pump 8 for supplying wash water stored in the sump to the spray unit 3. [

The receiving portion 1 may be provided as a cabinet for enclosing the tub 11 and forming an outer appearance of the dishwasher, or may be a kitchen furniture (sink or the like) having a space in which the tub 11 can be accommodated, (not shown).

The rack 11 is provided with racks 191 and 193 for accommodating objects to be cleaned. The racks are provided with a first rack 191 and a second rack 193 located below the first rack .

The washing space provided by the tub 11 is opened and closed by a door 16. [ Thus, the user can draw the racks out of the cleaning space or insert the racks into the cleaning space by opening the doors.

The tub 11 is supported by a base 12, which is fixed to the base and is located below the tub. The sump 13 receives the washing water through the water connection pipe 131 and discharges the washing water to the outside of the sump through the drain connection pipe 135 and the drain pump 137.

The water connection pipe 131 may further include a water softener 133 for lowering the hardness of the washing water. The hardness of water is a value in terms of the amount of calcium and magnesium contained in the water in terms of ppm of calcium carbonate. If the hardness of water is high, the detergent may not be dissolved well and the washing performance of the dishwasher may be deteriorated. ) Is a means to solve such a problem.

A sump cover 15 is provided between the sump 13 and the tub 11. The sump cover is provided with a recovery hole 151 for communicating the inside of the tub with the sump. Therefore, the washing water injected into the tub in the jetting unit 3 will be collected into the sump through the collection hole.

When the first rack and the second rack are provided on the tub, the jetting unit 3 includes a first jetting arm 31 for jetting washing water into the first rack 191, a second jetting arm 31 for jetting washing water to the first rack 191, And a second minute sandstone 33 for spraying wash water.

The first and second minute sandstones are supplied with wash water through a hearth furnace (35), and the arm passage is provided to connect the respective powder sandstones (31, 33) and the circulation pump (8).

The metering passage 35 has a connection passage 351 connected to the circulation pump 8, a first rock passage 353 connecting the connection passage to the first rocking arm 31, And a second arm passage 355 connecting the first arm passage 33 and the second arm passage 355. Therefore, when the circulation pump 8 is operated, the washing water in the sump 13 flows into the connection flow path 351 and then supplied to the arms 31 and 33 through the respective arm flow paths 353 and 355.

The first and second arm flow paths 353 and 355 may be branched from the connection flow path 351. In this case, 357 may be provided. The switching valve 357 may selectively open the first arm flow path and the second arm flow path, or may simultaneously open the first and second arm flow paths.

The circulation pump 8 includes a pump body 81 located inside the base 12, a first chamber 82 provided inside the pump body and communicating with the sump 13, A second chamber 85 to which the oil channel 35 is connected, and an impeller 87 provided in the second chamber.

The first chamber 82 and the second chamber 85 are separated from each other by a partition wall 811 provided in the pump body 81. The partition wall may be provided with a partition wall through hole (813) for communicating the first chamber and the second chamber.

The first chamber 82 is connected to the sump 13 through a chamber inlet 821 and the second chamber 85 is connected to the connection channel 351 through a chamber outlet 851.

The impeller 87 is rotated by a driving unit 89 located outside the pump body 81. Therefore, when the impeller rotates, the washing water in the sump 13 flows into the first chamber 82, and the washing water flowing into the first chamber flows into the second chamber 85 through the partition wall through hole 813 And is supplied to the connection passage 351 through the chamber outlet 851.

The first chamber 82 may be provided with a heater 88 for heating the washing water. The heater may include a heat transfer part 881 forming a bottom surface of the first chamber 82 and a heating part 883 heating the heat transfer part. The heating unit 883 is fixed to the heat transfer unit 881 and is located outside the first chamber. The heating unit 883 may be a heating element that generates heat when current is supplied.

Conventionally, in the dishwasher, the heater for heating the washing water is generally located inside the chamber for storing the washing water. In this case, the controller of the dishwasher has a disadvantage in that it is necessary to control the water level in the chamber so that the heater is not exposed to the outside of the washing water, thereby preventing the heater from overheating.

However, in the present invention, the entire bottom surface of the first chamber 82 is constituted by the heat transfer portion 881 (conductor), and the heat transfer portion is heated by the heating portion 883 located outside the first chamber 82, The present invention can prevent the heater from overheating.

2, a water supply connection pipe 131 provided in the sump is connected to a water supply source through a flow path portion 9, and the water discharge connection pipe 135 is connected to a sump through the flow path portion 9 13) Drain the washing water inside the dishwasher.

3, the flow path unit 9 includes a housing 91 fixed to one surface of the tub 11, and a water supply connection pipe 131 provided inside the housing for connecting the water supply connection pipe 131 and the water supply source S And a water drain passage 97 connected to the water drain connection pipe 135. The water drainage passage 97 may be formed of a water supply pipe,

The housing 91 includes a first communicating portion 911 communicating with the tub 11. The water supply channel portion 95 includes a water supply channel 951 connected to a water supply source S, A first flow path 952 for guiding the washing water to the first communicating part 911 and a second flow path 955 for connecting the water supplying path and the water supplying connection pipe 131.

The dishwasher having the above structure can prevent the washing water stored in the sump 13 from flowing back into the housing 91 through the second flow path 955 even if negative pressure is generated in the water source S have. The first flow path 952 and the second flow path 955 are formed by branching the water supply flow path 951. A branch point between the first flow path 952 and the second flow path 955 is formed by the first communication part 911, And is connected to the tub 11 through a pipe. Thus, according to the present invention, air in the tub can be supplied to the water supply passage 951, and even if a negative pressure is generated in the water supply source S, the wash water stored in the sump can be prevented from moving to the housing 91.

A flow rate measuring unit 9511 may be provided in the water supply channel 951 to control the amount of washing water supplied to the sump 13 and the water supply channel 951 may be opened and closed by a valve 9513 . Therefore, the control unit (not shown) can control the amount of wash water supplied to the sump through the valve and the flow rate measuring unit.

The drain passage portion 97 may be provided as a drain passage 971 provided in the housing 91 and connected to the drain connection pipe 135. The drain passage 971 should be provided so that the sump 13 passes through a point L2 higher than the highest water level L1 of storable wash water. So that a certain amount of washing water can be stored in the sump.

In the dishwasher described above, when the drain pump 137 is operated, the wash water inside the sump will be discharged to the outside of the dishwasher through the drain connection pipe 135 and the drain passage 971.

On the other hand, if the wash water in the sump 13 starts to be discharged to the outside of the sump by the drain pump 137, even if the operation of the drain pump 137 is stopped, Will all be discharged to the outside of the sump. That is, the siphon phenomenon will prevent the washing water from remaining in the drain connection pipe 135 and the drain passage 971.

However, if the drainage passage 971 is connected to the drainage pipe, if the washing water does not remain in the drainage connection pipe 135 or the drainage passage 971, the odor may be introduced into the sump 13. [ In order to prevent such a problem, the siphon brakes 973 and 975 may be provided in the drainage passage 971.

The siphon brakes 973 and 975 may include a connection chamber 973 connected to the drain passage 971 and a check valve 975 for opening and closing the connection chamber. The check valve is a means for communicating the inside of the drainage passage 971 with the inside of the housing 91 according to the pressure inside the drainage passage 971.

When the drain pump 137 is operated, the check valve 975 will close the connection chamber 973. However, when the drain pump stops operating, the check valve 975 may open the connection chamber 973 to communicate the inside of the connection chamber 973 with the inside of the housing 91.

The housing 91 is connected to the inside of the tub 11 through the first communication portion 911. Accordingly, when the connection chamber 973 is opened by the check valve 975, air will flow into the drain passage 971, so that a part of the washing water in the drainage passage 971 flows to the outside of the dishwasher And the remaining part of the washing water inside the drainage passage 971 will remain in the drainage connection pipe 135. [ Therefore, the present invention can prevent the odor from flowing into the sump 13 through the washing water remaining in the drain connection pipe 135.

In order to more effectively realize the function of the siphon brake, the housing 91 may further include a second communicating part 913 for communicating the inside of the housing and the outside of the housing.

The housing 91 may further include an air flow path 915 connected to the second communication portion 913 to introduce air into the housing. The air exhausting end of the air flow path 915 917 may be provided at a position higher than the check valve 975. [ Even if the washing water leaks into the housing 91 through the check valve, the washing water is prevented from being discharged to the outside of the housing through the air passage.

The flow path portion 9 having the above-described structure is liable to be damaged by the receiving portion 1 when the tub 11 is coupled to the receiving portion 1. The flow path portion 9 may further include a guider 93 for preventing the flow path portion 9 from colliding with the receiving portion 1 when the tub 11 is coupled to the receiving portion 1 .

4, the guider 93 includes a guider body 931 fixed to the housing 91, and a bent portion 933 formed by bending the free end of the guider body 931. [ . ≪ / RTI >

In this case, it is preferable that the guider body 931 extending from the housing 91 is formed to form the same plane as the housing 91. However, the guider body 931 may be fixed to protrude from the surface of the housing 91.

The present invention may be embodied in various forms without departing from the scope of the invention. Accordingly, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

100: dishwasher 1: receptacle 11: tub
12: Base 13: Sump 131: Water supply connector
133: Water softener 135: Drain connector 137: Drain pump
15: sump cover 151: recovery hole 16: door
3: jetting part 35: molten oil 351: connecting channel
353: first arm passage 355: second arm passage 357: switching valve
8: circulation pump 81: pump body 811: partition wall
813: Perforation hole 82: First chamber opening 821: Chamber inlet
85: second chamber 851: chamber outlet 87: impeller
89: driving part 88: heater 9:
91: housing 911: first communicating part 913: second communicating part
915: air flow path 917: air outlet end 93: guider
931: Gudder body 933: Bending section 95: Water supply channel section
951: Water supply flow path 952: First flow path 955: Second flow path
97: drainage channel portion 971: drainage channel 973: connection chamber
975: Check valve

Claims (9)

A receiving portion provided with an opening face;
A tub inserted into the accommodating portion through the opening, the tub being accommodated in an object to be cleaned;
A spraying part for spraying washing water to the object to be cleaned;
A sump which provides a space for storing wash water and through which the wash water injected into the tub is recovered;
A housing fixed to an outer circumferential surface of the tub and positioned between the housing portion and the tub;
A water supply passage portion provided in the housing and connecting at least one of the tub and the sump to a water supply source;
And a guider for preventing the housing from colliding with the accommodating portion when the tub is inserted into the accommodating portion. The method according to claim 1,
Wherein the guider includes a guider body extending from the housing and a bent portion bent at a free end of the guider body. 3. The method of claim 2,
Wherein the guider body is positioned in the same plane as the housing. 4. The method according to any one of claims 1 to 3,
Wherein the receiving portion is provided in a cabinet forming an outer appearance of the tub. 4. The method according to any one of claims 1 to 3,
Wherein the receiving portion is provided with furniture or a wall having a space in which the tub can be accommodated. The method according to claim 1,
The housing further includes a first communicating part for communicating the inside of the housing with the tub,
Wherein the water supply channel portion includes a water supply channel connected to a water supply source; A first flow path communicating the water supply flow path and the first communication portion; And a second flow path for guiding the wash water supplied from the water supply channel to the sump. The method according to claim 6,
A water connection pipe connecting the second flow path and the sump;
Further comprising: a water softener provided on the water connection pipe to lower the hardness of the washing water. The method according to claim 6,
A second communicating part for communicating the inside of the housing with the outside of the housing;
A drainage passage provided in the housing for guiding the wash water discharged from the sump to the outside of the receiving portion and passing through a position higher than a maximum water level set in the sump;
And a siphon brake for communicating the drain passage and the second communication portion according to a pressure inside the drain passage. The method according to claim 1,
A first chamber through which the wash water stored in the sump flows;
A second chamber communicating with the first chamber and the jetting section;
An impeller rotatably installed in the second chamber for moving wash water flowing into the first chamber to the spray portion;
A heat transfer part forming a bottom surface of the first chamber, the heat transfer part being attachable to and detachable from the first chamber;
And a heating unit fixed to the heat transfer unit and positioned outside the first chamber and heating the heat transfer unit.

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