KR20230144409A - Dishwasher - Google Patents

Abstract

This disclosure relates to dishwashers. A dishwasher according to one aspect of the present disclosure includes a cabinet; a tub disposed inside the cabinet and accommodating a washing object; a washing pump that supplies washing water into the tub; a heater that heats water in the washing pump; a water chamber having a space for storing water therein and disposed on the outside of the tub to exchange heat with the air inside the tub; and a humidity sensor that detects the humidity inside the tub, wherein the water chamber receives water when the humidity inside the tub decreases after the supply of washing water into the tub is stopped, and remains on the dishes. Drying efficiency can be increased by utilizing the latent heat.

Description

Dishwasher {DISHWASHER}

The present disclosure relates to a dishwasher, and more specifically to a dishwasher equipped with a humidity sensor.

A dishwasher is a device that sprays washing water and steam onto the object to be cleaned contained inside a tub, thereby removing foreign substances from the object.

After the washing cycle in which washing water and steam is sprayed toward the object to be washed is completed, the dishwasher performs a drying cycle to remove moisture from the object to be washed. At this time, since heated washing water and steam are sprayed toward the washing object during the washing cycle, the temperature inside the tub is higher than the outside of the dishwasher after the washing cycle is completed.

However, since the conventional dishwasher performs the drying cycle, including opening the door, immediately after the washing cycle is completed, the latent heat remaining in the tub cannot be utilized, resulting in low drying efficiency.

Korean Patent Document KR20050118187A Korean Patent Document KR19880008816A

The present disclosure aims to solve the above-described problems and other problems.

Another object of the present disclosure may be to provide a dishwasher with improved drying efficiency.

Another purpose of the present disclosure may be to increase drying efficiency by utilizing the latent heat of dishes.

Another purpose of the present disclosure may be to increase drying efficiency without increasing the time required for the drying process.

Another purpose of the present disclosure may be to increase drying efficiency by utilizing a humidity sensor.

Another purpose of the present disclosure may be to reduce power consumption of dishwashers.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

A dishwasher according to one aspect of the present disclosure for achieving the above-described object includes a cabinet; and a tub disposed inside the cabinet and accommodating a cleaning object.

The dishwasher includes a washing pump that supplies washing water into the tub.

The dishwasher includes a heater that heats water in the washing pump.

The dishwasher includes a water chamber having a space inside to store water.

The water chamber is disposed outside the tub and exchanges heat with the air inside the tub.

The dishwasher includes a humidity sensor that detects humidity inside the tub.

The water chamber receives water when the humidity inside the tub decreases after the supply of washing water to the inside of the tub is stopped, and can dry the inside of the tub by utilizing the latent heat of the dishes before supplying water to the water chamber. there is.

After the supply of washing water to the inside of the tub is stopped, moisture inside the tub may evaporate through heat exchange with the cleaning object.

The water chamber can receive water when the change over time in the measured value of the humidity sensor is negative.

The humidity sensor may include a first humidity sensor disposed on an upper portion of the tub.

The humidity sensor may include a second humidity sensor disposed below the tub and spaced apart from the first humidity sensor.

The water chamber may receive water when the difference between the measured values of the first and second humidity sensors is less than a preset reference value after the supply of washing water into the tub is stopped.

The dishwasher may include a door that is rotatably coupled to the cabinet and opens and closes the inner space of the tub.

The door may be opened after the supply of washing water into the tub is stopped.

The door may be opened when the elapsed time since the supply of washing water into the tub is stopped is greater than a preset first reference time.

The door may be opened when the elapsed time since water supply to the water chamber is completed is greater than a preset second reference time.

The dishwasher may include a door motor that rotates the door.

The dishwasher may include a water supply valve that regulates the flow rate of water supplied to the water chamber.

The dishwasher may include a supply valve that adjusts the flow rate of water supplied from the water chamber to the tub.

The dishwasher may include a controller electrically connected to the door motor, the water valve, and the supply valve.

The controller may open the water supply valve and close the supply valve when the humidity inside the tub decreases after the supply of washing water into the tub is stopped.

The controller may open the door by rotating the door motor when the elapsed time since the supply of washing water into the tub is stopped is greater than a preset reference time.

The tub may include a tub side wall coupled to the water chamber.

The humidity sensor may be disposed inside the tub so that the tub side wall is positioned between the water chamber and the water chamber.

The dishwasher may include an upper rack disposed on an upper portion of the tub.

The dishwasher may include a lower rack located below the tub and spaced apart from the upper rack.

The first humidity sensor may be located at a height corresponding to the upper rack.

The second humidity sensor may be located at a height corresponding to the lower rack.

Specific details of other embodiments are included in the detailed description and drawings.

According to at least one of the embodiments of the present disclosure, the drying efficiency of the dishwasher can be improved by changing the timing of water supply to the water chamber.

According to at least one of the embodiments of the present disclosure, drying efficiency can be increased by utilizing the latent heat of dishes by changing the opening time of the door.

According to at least one of the embodiments of the present disclosure, the entire drying time can be maintained by only changing the timing of water supply to the water chamber and the opening timing of the door within the same drying time.

According to at least one of the embodiments of the present disclosure, power consumption of a dishwasher can be reduced by utilizing latent heat of dishes as energy used for drying.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view of a dishwasher according to an embodiment of the present disclosure.
Figure 2 is an internal structure diagram of a dishwasher according to an embodiment of the present disclosure.
3 is a portion of a dishwasher according to an embodiment of the present disclosure.
4 is a portion of a dishwasher according to an embodiment of the present disclosure.
5 is a portion of a dishwasher according to an embodiment of the present disclosure.
Figure 6 compares the administrative sequence of a conventional dishwasher and the dishwasher of the present disclosure.
Figure 7 is a control block diagram of a dishwasher according to an embodiment of the present disclosure.
Figure 8 is a graph comparing the temperature and humidity of a conventional dishwasher and the dishwasher of the present disclosure.
Figure 9 is a graph explaining the effect of a dishwasher according to an embodiment of the present disclosure.

Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Regardless of the reference numerals, identical or similar components will be given the same reference numbers and redundant descriptions thereof will be omitted.

The suffixes “module” and “part” for components used in the following description are given or used interchangeably only for the ease of preparing the specification, and do not have distinct meanings or roles in themselves.

Additionally, in describing the embodiments disclosed in this specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed descriptions will be omitted. In addition, the attached drawings are only for easy understanding of the embodiments disclosed in this specification, and the technical idea disclosed in this specification is not limited by the attached drawings, and all changes included in the spirit and technical scope of the present disclosure are not limited. , should be understood to include equivalents or substitutes.

Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is said to be “connected” or “connected” to another component, it is understood that it may be directly connected or connected to the other component, but that other components may exist in between. It should be. On the other hand, when a component is said to be “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

Singular expressions include plural expressions unless the context clearly dictates otherwise.

Referring to FIG. 1, the dishwasher 1 will be described.

Dishwasher 1 may include a cabinet 10. The cabinet 10 may form the external shape of the dishwasher 1.

The dishwasher 1 may include a tub 100. The tub 100 may be placed inside the cabinet 10. The cleaning object may be accommodated inside the tub 100.

The dishwasher 1 may include a driving unit 200. The driving unit 200 may be disposed on the lower side of the tub 100. The driving unit 200 may be placed inside the cabinet 10.

The dishwasher 1 may include a door 20. The door 20 may be rotatably disposed in the cabinet 10. The door 20 can be rotated from the cabinet 10 to open the interior space of the cabinet 10.

The dishwasher 1 may include a control panel 30. The user can operate the dishwasher 1 using the control panel 30. The control panel 30 can be rotated with respect to the cabinet 10 together with the door 20.

Referring to FIG. 2, the dishwasher 1 will be described.

The tub 100 accommodates a cleaning object. Washing water is sprayed into the tub 100. The tub 100 is disposed inside the cabinet 10 and forms a washing space 100S in which the washing object is accommodated.

A driving unit 200 for circulation of washing water is disposed on the lower side of the tub 100. The driving unit 200 may be placed inside the cabinet 10 . The driving unit 200 forms a driving space 200S in which structures for circulation of washing water, which will be described later, are arranged.

Inside the tub 100, an upper rack 110 on which a cleaning object is placed and a lower rack 120, which is disposed below the upper rack 110 and on which a cleaning object is placed, may be disposed.

Inside the tub 100, a plurality of spray tubes 150, 160, and 170 may be disposed to spray washing water toward the washing object mounted on the upper rack 110 and lower rack 120.

A plurality of injection tubes 150, 160, and 170 include a lower injection tube 150 disposed on the lower side of the lower rack 120, and an upper injection tube disposed between the upper rack 110 and the lower rack 120 ( 160) and a top spray tube 170 disposed on the upper side of the upper rack 110.

Each of the plurality of spray tubes 150, 160, and 170 may receive washing water from the washing pump 220. Inside the tub 100, a first injection pipe 130 and a second injection pipe 140 extending from the driving unit 200 may be disposed.

The first injection pipe 130 extends upward from the switching valve 240 and may extend toward the upper injection tube 160.

The second injection pipe 140 extends upward from the switching valve 240 and may extend toward the top injection tube 170.

The upper injection tube 160 is connected to the first injection pipe 130 and can receive washing water through the first injection pipe 130. The top spray tube 170 is connected to the second spray pipe 140 and can receive washing water through the second spray pipe 140.

The lower injection tube 150 is connected to the switching valve 240 and can receive washing water through the switching valve 240.

The lower injection tube 150 may include a plurality of lower injection nozzles 151. The lower spray nozzle 151 may be open toward the washing space 100s and may spray washing water toward the lower rack 120.

The upper injection tube 160 may include a plurality of upper injection nozzles 161. The upper injection nozzle 161 may be open toward the washing space (100s).

The top spray tube 170 can be rotatably disposed on the upper side of the tub 100 and can spray washing water toward the inside of the tub 100.

Inside the tub 100, a steam injection nozzle 180 is disposed to supply steam into the tub 100. The steam injection nozzle 180 may be placed in front of the tub 100 adjacent to the door 20. The steam injection nozzle 180 may be arranged to face the lower rack 120.

The steam injection nozzle 180 is connected to the cleaning pump 220 of the driving unit 200 and can receive steam generated by the cleaning pump 220.

The driving unit 200 includes a sump 210 that collects the washing water sprayed toward the washing space 100S, a washing pump 220 that extrudes the washing water collected in the sump 210 toward the tub 100, and a washing It may include a heater 230 connected to the pump 220 to heat the washing water flowing in the washing pump 220, and a switching valve 240 distributing the washing water extruded from the washing pump 220.

The sump 210 may include a filter 211 that filters out foreign substances contained in the collected wash water.

The washing pump 220 may be connected to the sump 210 through the pump inlet pipe 223. Washing water collected inside the sump 210 may flow into the washing pump 220 through the pump inlet pipe 223 when the washing pump 220 is operated.

The heater 230 may heat the washing water introduced into the washing pump 220 to create hot water or steam. The heater 230 may be disposed below the washing pump 220 and may be manufactured integrally with the washing pump 220.

Washing water in a hot water state heated in the washing pump 220 may flow into the switching valve 240 through the pump discharge pipe 234. Washing water flowing into the switching valve 240 may be distributed to the spray arm 150, the first distribution pipe 130, and the second distribution pipe 140. The switching valve 240 can selectively flow the incoming washing water to any one of the spray arm 150, the first distribution pipe 130, and the second distribution pipe 140.

Washing water in a steam state heated in the washing pump 220 may flow to the steam nozzle 180 through the steam nozzle inlet pipe 183. The steam nozzle 180 is connected to the cleaning pump 220 through the steam nozzle inlet pipe 183 and can receive steam from the cleaning pump 220.

The dishwasher 1 may include a door motor 250. The door motor 250 can rotate the door 20. The door 20 may be rotated from the cabinet 10 by rotation of the door motor 250. The door motor 250 may be placed inside the driving unit 200.

Dishwasher 1 may include a controller 260. The controller 260 can control the operation of the dishwasher 1. The controller 260 may be electrically connected to the door motor 250. The controller 260 can control the driving of the door motor 250.

Referring to FIG. 3, the dishwasher 1 will be described.

The door 20 may be rotatably disposed from the cabinet 10. The control panel 30 can be rotated together with the door 20.

The door 20 can be rotated from the cabinet 10 to open the inside of the washing space 100s. The air inside the washing space (100s) may be discharged to the outside of the cabinet (10).

Referring to FIG. 4, the dishwasher 1 will be described.

The tub 100 may form a space 100s in which a washing object is accommodated. Washing water contained in the internal space 100s of the tub 100 may be washed using heated washing water and steam.

The tub 100 may include a tub lower wall 101. The tub lower wall 101 may form the lower boundary of the tub 100. The driving unit 200 may be disposed on the lower side of the tub lower wall 101.

The sump 210 may be connected to the tub lower wall 101. Washing water in the inner space 100s of the tub 100 may be collected into the sump 210 through the sump hole 213.

The tub 100 may include a first tub side wall 102. The first tub side wall 102 may extend upward from the tub lower wall 101.

The tub 100 may include a second tub side wall 103. The second tub side wall 103 may extend upward from the tub lower wall 101.

The first tub side wall 102 and the second tub side wall 103 may be spaced apart from each other. The washing space 100s may be formed between the first tub side wall 102 and the second tub side wall 103. The first tub side wall 102 and the second tub side wall 103 may be called “tub side walls.”

The dishwasher 1 may include a water chamber 270. Water may be stored in the water chamber 270. The water chamber 270 may be disposed outside the tub side wall 102. The water stored in the water chamber 270 may exchange heat with the air in the washing space 100s. After the washing cycle is completed, the hot air in the washing space (100 s) may be condensed through heat exchange with cold water in the water chamber (270). Water condensed through heat exchange with the water chamber 270 may be collected into the sump 210 through the sump hole 213.

The dishwasher 1 may include a humidity sensor 190. The humidity sensor 190 can measure the humidity of the internal space 100s of the tub 100.

The humidity sensor 190 may include a first humidity sensor 191. The first humidity sensor 191 may be placed on the top of the tub side wall 102. The first humidity sensor 191 may be placed between the upper rack 110 (see FIG. 2) and the tub side wall 102.

Humidity sensor 190 may include a second humidity sensor 192. The second humidity sensor 192 may be placed below the tub side wall 102. The second humidity sensor 192 may be disposed between the lower rack 120 (see FIG. 2) and the tub side wall 102.

The first humidity sensor 191 and the second humidity sensor 192 may be spaced apart vertically. The first humidity sensor 191 may be arranged to face the cleaning object mounted on the upper rack 110. The second humidity sensor 192 may be arranged to face the cleaning object mounted on the lower rack 120.

The placement location and number of humidity sensors 190 are not limited to those described above. That is, the humidity sensor 190 may be placed in a position where it can measure the humidity of the internal space 100s of the tub 100.

The dishwasher 1 may include a temperature sensor 199. The temperature sensor 199 can measure the temperature of the inner space (100s) of the tub 100. The temperature sensor 199 may be spaced apart from the humidity sensor 190.

Referring to FIG. 5, the dishwasher 1 will be described.

Figure 5 shows the water chamber 270.

The water chamber 270 may be connected to the water supply pipe 280. The water chamber 270 can receive water from an external water source (not shown) through the water supply pipe 280.

The dishwasher 1 may include a water supply valve 281. The water supply valve 281 can control the flow rate of water in the water supply pipe 280. The water supply valve 281 may be electrically connected to the controller 260 (see FIG. 2). The controller 260 can control the opening and closing of the water supply valve 281.

The water chamber 270 may include a water supply port 271. The water supply port 271 may be connected to the water supply pipe 280. Water supplied from an external water source (not shown) may flow into the water chamber 270 through the water supply port 271.

The water chamber 270 may include a water supply passage 275. The water supply passage 275 may be connected to the water supply port 271. Water flowing in through the water supply port 271 may flow through the water supply passage 275.

The water chamber 270 may include a storage space 274. Water may be stored in the storage space 274. Water flowing through the water supply passage 275 may be stored in the storage space 274. After the washing cycle of the dishwasher 1 ends, the hot moist air remaining inside the tub 100 may exchange heat with cold water stored in the storage space 274 and condense.

The water chamber 270 may include a supply port 272. Water in the water chamber 270 may be supplied to the sump 210 through the supply port 272.

The water chamber 270 may include a supply valve 273. The supply valve 273 can control the flow rate of water in the supply port 272. The supply valve 273 may be electrically connected to the controller 260 (see FIG. 2). The controller 260 can control the opening and closing of the supply valve 273.

The water chamber 270 may include a drain port 276. Water in the water chamber 270 may be discharged to the outside of the dishwasher 1 through the drain port 276.

The dishwasher 1 can be driven in a washing cycle. The washing stroke may be a stroke in which heated washing water and steam are sprayed toward the cleaning object accommodated inside the tub 100. After the washing cycle is completed, the temperature inside the tub 100 may be higher than the outside of the cabinet 10 due to heated washing water and steam. The cold water stored in the water chamber 270 may exchange heat with the high temperature air inside the tub 100 after the washing process. After the washing cycle is completed, the high temperature air inside the tub 100 may exchange heat with cold water in the water chamber 270 and be condensed. Condensed water may fall downward along the tub side wall 102 and be collected into the sump 210 through the sump hole 213 (see FIG. 4).

Referring to FIG. 6, the dishwasher 1 will be described.

Figure 6 compares the administrative sequence of the conventional dishwasher and the administrative sequence of the dishwasher 1 of the present disclosure.

A conventional dishwasher supplies water to the water chamber immediately after the washing cycle (S110') and the drain cycle (S120') are completed (S140'). A conventional dishwasher supplies water to the water chamber (S140'), drains the water in the water chamber (S150'), opens the door (S160'), and ends the drying cycle (S170').

The dishwasher 1 of the present disclosure dries the inside of the tub 100 by performing latent heat drying (S130) after the washing cycle (S110) and the drain cycle (S120) are completed. Latent heat drying (S130) may mean drying using latent heat remaining in the dishes after the washing cycle is completed. During latent heat drying (S130), the latent heat remaining in the dishes may evaporate the moisture inside the tub 100. The dishwasher 1 may supply water to the water chamber after latent heat drying (S130) is performed (S140). That is, the dishwasher 1 may supply water to the water chamber after the washing cycle is completed and a predetermined time has elapsed (S140). The dishwasher 1 can drain the water in the water chamber (S150), open the door (S160), and then end the drying cycle (S170). After water is supplied to the water chamber (S140), a predetermined time may elapse until the door is opened (S160).

The conventional dishwasher and the dishwasher 1 of the present disclosure start the drying cycle at the same time T1. A conventional dishwasher supplies water to the water chamber at time T1 (S160'). On the other hand, the dishwasher 1 of the present disclosure performs latent heat drying (S130) at time T1, and supplies water to the water chamber at time T2, when a predetermined time has elapsed after the drying cycle begins (S140). . In addition, the door of the dishwasher 1 of the present disclosure is opened later than that of a conventional dishwasher. The dishwasher 1 of the present disclosure opens the door (S160) at T3, when a predetermined time has elapsed after the drying cycle begins, whereas the conventional dishwasher opens the door at a time earlier than T3 (S160'). )do.

Referring to FIG. 7, the dishwasher 1 will be described.

The controller 260 can control the operation of the dishwasher 1. The controller 260 may be electrically connected to the humidity sensor 190, the door motor 250, the water supply valve 281, and the supply valve 273. The controller 260 may receive information about the humidity value inside the tub 100 from the humidity sensor 190. The controller 260 can control the operation of the door motor 250, the water valve 281, and the supply valve 273.

The controller 260 can determine whether the washing cycle of the dishwasher 1 has ended (S210). When the washing water and steam are not supplied into the tub 100, the controller 260 may determine that the washing cycle has ended.

After the washing cycle is completed, the controller 260 may start the drying cycle of the dishwasher 1 (S220).

The controller 260 may detect a change in the humidity value inside the tub 100 (S230). The controller 260 may determine whether the amount of change in the internal humidity value of the tub 100 is less than 0 (S230).

The controller 260 may supply water to the water chamber 270 when the amount of change in the humidity value inside the tub 100 is less than 0 (S250). When the amount of change in the humidity value inside the tub 100 is less than 0, the controller 260 may open the water supply valve 281 to supply water to the water chamber 270 (S250). Accordingly, when the amount of moisture evaporated inside the tub 100 using the latent heat of the dishes no longer increases, condensation drying can be performed using the water chamber 270.

When the amount of change in the humidity value inside the tub 100 is greater than 0, the controller 260 can detect the difference between the humidity value of the first humidity sensor 191 and the humidity value of the second humidity sensor 192 (S240) ). When the amount of change in the internal humidity value of the tub 100 is greater than 0, the controller 260 sets the difference between the first humidity value of the first humidity sensor 191 and the second humidity value of the second humidity sensor 192 to the reference value ( It is possible to determine whether it is smaller than H) (S240). The controller 260 may supply water to the water chamber 270 when the difference between the first humidity value and the second humidity value is smaller than the reference value (H) (S250). When the difference between the first humidity value and the second humidity value is smaller than the reference value (H), the controller 260 may open the water supply valve 281 to supply water to the water chamber 270 (S250). Accordingly, even in a situation where the humidity inside the tub 100 increases due to the latent heat of the dishes, the first humidity value, which is the humidity value of the upper part of the tub 100, and the second humidity value, which is the humidity value of the lower part of the tub 100, If the difference is within a predetermined range, it is determined that the wet steam has sufficiently spread inside the tub 100, and condensation drying can be performed through water supply to the water chamber 270.

The controller 260 may compare the elapsed time after the start of the drying cycle with the first reference time (LT1) (S260). The controller 260 may open the door 20 when the elapsed time after the start of the drying cycle is greater than the first reference time LT1 (S280). When the elapsed time after the start of the drying cycle is greater than the first reference time LT1, the controller 260 may open the door 20 by driving the door motor 250 (S280). Accordingly, after the door is closed and sufficient drying is achieved using the latent heat of the dishes, additional drying can be performed by opening the door.

When the elapsed time after the start of the drying cycle is less than the first reference time (LT1), the controller 260 may compare the elapsed time after water supply to the water chamber 270 and the second reference time (LT2) (S270). The controller 260 may determine whether the elapsed time after supplying water to the water chamber 270 is greater than the second reference time LT2 (S270). The controller 260 may open the door 20 when the elapsed time after water supply to the water chamber 270 is greater than the second reference time LT2 (S280). When the elapsed time after water supply to the water chamber 270 is greater than the second reference time LT2, the controller 260 may open the door 20 by driving the door motor 250 (S280). Accordingly, even if the drying process starts and the first reference time (LT1) has not elapsed, after the water supply to the water chamber 270 has been performed and sufficient condensation drying has been performed, the door 20 can be opened to perform additional drying. You can.

Referring to FIG. 8, the dishwasher 1 will be described.

Figure 8 (a) is a graph showing changes in temperature and humidity during the drying cycle of a dishwasher according to the prior art. Figure 8(b) is a graph showing temperature and humidity changes during the drying cycle of the dishwasher 1 of the present disclosure.

Referring to (a) of FIG. 8, in the case of a dishwasher according to the prior art, water is supplied to the water chamber at T1, immediately after the washing cycle is completed. Accordingly, the temperature and humidity rapidly decrease from time T1. Additionally, in the case of a dishwasher according to the prior art, the door is opened at time T3', a predetermined time elapsed from time T1.

Referring to (b) of FIG. 8, the dishwasher 1 of the present disclosure performs latent heat drying at T1 immediately after the washing cycle is completed. Accordingly, the humidity inside the tub increases while latent heat drying is performed. The dishwasher 1 of the present disclosure supplies water to the water chamber at time T2 when the slope θ of increasing humidity value during latent heat drying becomes smaller than 0. The dishwasher 1 of the present disclosure opens the door at time T3 after water is supplied to the water chamber.

The elapsed time between time T1 and time T3' of the dishwasher according to the prior art is shorter than the time elapsed between time T1 and time T3 of the dishwasher 1 of the present disclosure.

The dishwasher 1 of the present disclosure delays the timing of water supply to the water chamber 270 and the opening timing of the door 20 compared to the dishwasher of the prior art, thereby maximizing the drying effect by latent heat of dishes.

In the dishwasher 1 of the present disclosure, the time interval between T1 and T2 may be 10 minutes. In the dishwasher 1 of the present disclosure, the time interval between T1 and T3 may be 14 minutes.

Referring to FIG. 9, the effect of the dishwasher 1 will be explained.

The dishwasher 1 of the present disclosure can maintain the temperature and humidity in the tub before supplying water to the water chamber by delaying the timing of water supply to the water chamber and the opening timing of the door, thereby sufficiently evaporating the moisture inside the tub. . Accordingly, the drying efficiency inside the tub can be improved by sufficiently evaporating the moisture inside the tub and the moisture on the surface of the dishes.

In addition, the dishwasher 1 of the present disclosure performs moisture drying using the latent heat of dishes, thereby reducing power consumption for drying.

In the above, preferred embodiments of the present invention have been shown and described, but the present invention is not limited to the specific embodiments described above, and can be used in the technical field to which the invention pertains without departing from the gist of the present invention as claimed in the patent claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be understood individually from the technical idea or perspective of the present invention.

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

Any or other embodiments of the present disclosure described above are not exclusive or distinct from each other. Certain embodiments or other embodiments of the present disclosure described above may have their respective components or functions combined or combined (Certain embodiments or other embodiments of the disclosure described above are not mutually exclusive or distinct from each other. Any or all elements of the embodiments of the disclosure described above may be combined with another or combined with each other in configuration or function).

For example, this means that configuration A described in a particular embodiment and/or drawing may be combined with configuration B described in other embodiments and/or drawings. In other words, even if the combination between configurations is not directly explained, this means that the combination is possible except in cases where the combination is described as impossible (For example, a configuration “A” described in one embodiment of the disclosure and the drawings and a configuration "B" described in another embodiment of the disclosure and the drawings may be combined with each other. Namely, although the combination between the configurations is not directly described, the combination is possible except in the case where it is described that the combination is impossible).

The above detailed description should not be construed as restrictive in any respect and should be considered illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included within the scope of the present invention (Although embodiments have been described with reference to a number of illustrative embodiments Thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope of the principles of this disclosure.More particularly, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art).

1: Dishwasher 10: Cabinet
20: Door 30: Control panel
100: Tub 190: Humidity sensor
200: Drive unit 250: Door motor
260: Controller 270: Water chamber
280: water supply pipe

Claims (12)

cabinet;
a tub disposed inside the cabinet and accommodating a washing object;
a washing pump that supplies washing water into the tub;
a heater that heats water in the washing pump;
a water chamber having a space for storing water therein and disposed on the outside of the tub to exchange heat with the air inside the tub; and
It includes a humidity sensor that detects the humidity inside the tub,
The water chamber is,
A dishwasher that receives water when the humidity inside the tub decreases after the supply of washing water into the tub is stopped.
According to claim 1,
A dishwasher in which, after the supply of washing water to the inside of the tub is stopped, moisture inside the tub evaporates through heat exchange with the object to be washed.
According to claim 1,
The water chamber is,
A dishwasher that receives water when the change over time in the measured value of the humidity sensor is negative.
According to claim 1,
The humidity sensor is,
A first humidity sensor disposed at the top of the tub; and
It includes a second humidity sensor disposed spaced apart from the first humidity sensor at the bottom of the tub,
The water chamber is,
A dishwasher that receives water when the difference between the measured values of the first humidity sensor and the second humidity sensor is less than a preset reference value after the supply of washing water into the tub is stopped.
According to claim 1,
It is rotatably coupled to the cabinet and further includes a door that opens and closes the inner space of the tub,
The door is
A dishwasher that is opened after the supply of washing water to the inside of the tub is stopped.
According to clause 5,
The door is
A dishwasher that opens when the elapsed time after the supply of washing water into the tub is stopped is greater than a preset first reference time.
According to clause 5,
The door is
A dishwasher that opens when the elapsed time since water supply to the water chamber is completed is greater than a preset second reference time.
According to claim 1,
a door rotatably coupled to the cabinet and opening and closing the inner space of the tub;
a door motor that rotates the door;
a water supply valve that regulates the flow rate of water supplied to the water chamber;
a supply valve that regulates the flow rate of water supplied from the water chamber to the tub;
Further comprising a controller electrically connected to the door motor, the water valve, and the supply valve,
The controller is,
After the supply of washing water into the tub is stopped, when the humidity inside the tub decreases, the water supply valve is opened and the supply valve is closed,
A dishwasher that opens the door by rotating the door motor when the elapsed time since the supply of washing water to the inside of the tub is stopped is greater than a preset reference time.
According to claim 1,
The humidity sensor is,
A dishwasher disposed inside the tub.
According to claim 1,
The tub is,
It includes a tub side wall coupled to the water chamber,
The humidity sensor is,
A dishwasher disposed inside the tub so that the tub side wall is positioned between the water chamber.
According to claim 1,
The humidity sensor is,
A first humidity sensor disposed at the top of the tub; and
A dishwasher including a second humidity sensor disposed at a lower portion of the tub and spaced apart from the first humidity sensor.
According to claim 11,
an upper rack disposed on the upper part of the tub; and
Further comprising a lower rack spaced apart from the upper rack at the bottom of the tub,
The first humidity sensor is located at a height corresponding to the upper rack, and the second humidity sensor is located at a height corresponding to the lower rack.