Dishwasher

Abstract

A dishwasher is provided. The dishwasher includes a wash pump for delivering wash water and a filter assembly connected to the wash pump and positioned downstream of the wash pump in a flow direction of the wash water. The filter assembly filters out foreign matter contained in the flowing wash water. The dishwasher further includes a condenser connected to the filter assembly and positioned downstream of the filter assembly in the flow direction of the wash water. The filter assembly is detachably coupled to the condenser.

Description

Technical Field

[0001] This disclosure relates to a dishwasher, and more specifically, to a dishwasher equipped with a heat pump system for heating the wash water. Background Technology

[0002] The content described in this section provides only background information about this disclosure and does not constitute prior art.

[0003] A dishwasher is a device that uses detergent and washing water to wash food residue (such as food crumbs) off dishes or cookware.

[0004] A typical dishwasher includes: a tub that provides washing space; shelves that are placed in the tub and hold dishes; spray arms that spray washing water onto the shelves; a water reservoir that stores the washing water; and a pump that supplies the washing water stored in the water reservoir to the spray arms.

[0005] The temperature of the wash water used in a dishwasher can be room temperature. However, using hot wash water can improve washing efficiency and shorten washing time. Therefore, hot wash water can be used for washing or rinsing dishes for at least a portion of the dishwasher's operation.

[0006] A heating device for heating washing water can be configured as, for example, an electric heater, a heat pump system, etc.

[0007] Because heat pump systems are more energy efficient than electric heaters, in recent years, there has been an increasing trend of incorporating heat pump systems into dishwashers for heating washing water.

[0008] A heat pump system can be equipped with a condenser, which heats the wash water through heat exchange between a high-temperature refrigerant and the relatively low-temperature wash water. The wash water can be heated to a high temperature as it flows through the condenser.

[0009] The refrigerant and wash water can flow in a manner that is far removed from each other within the condenser. Therefore, heat is transferred from the high-temperature refrigerant to the wash water, thus condensing the refrigerant while simultaneously heating the wash water. To increase the size of the interface between the wash water and the refrigerant, i.e., the heat transfer area between them, the flow path of the wash water can be constructed using multiple pipes.

[0010] Because multiple pipes are arranged in the condenser, wash water can flow into pipes with large diameters and then into pipes with small diameters. When the pipe diameter is relatively small, blockages may occur.

[0011] The washing water flowing through the pipes can be circulated through the dishwasher by the operation of the washing pump. Therefore, when washing dishes, foreign objects adhering to the surface of the dishes and removed from the surface by the washing water can be included in the circulating washing water.

[0012] When wash water containing foreign matter is introduced into a small-diameter pipe, the foreign matter contained in the wash water can adhere to the inner surface of the pipe and remain inside. As this circulation of wash water continues, the amount of foreign matter adhering to the inner surface of the pipe may continue to increase.

[0013] Therefore, as the dishwasher continues to be used, foreign objects continue to accumulate inside the pipes, which can lead to poor flow of wash water in the condenser. If this continues, at least some pipes may become clogged, and the flow of wash water may deteriorate even more rapidly.

[0014] This can lead to damage to the condenser, malfunction of the dishwasher, and in severe cases, the dishwasher may stop operating.

[0015] Therefore, a structure is needed that can inhibit the accumulation of foreign matter, including in the wash water, within the condenser and filter out these foreign matter. Furthermore, it is necessary to design a structure that inhibits the accumulation of foreign matter while also being easily disassembled so that the filtered and accumulated foreign matter can be easily removed. Summary of the Invention

[0016] One object of this disclosure is to provide a dishwasher with a heat pump system.

[0017] Another object of this disclosure is to provide a dishwasher having a structure that inhibits the accumulation of foreign matter, including in the wash water, within the condenser of a heat pump system.

[0018] Another object of this disclosure is to provide a dishwasher having a filter assembly for preventing foreign matter contained in the wash water from entering the condenser.

[0019] Another object of this disclosure is to provide a dishwasher having a structure in which the filter assembly is easily disassembled to facilitate cleaning of the filter assembly.

[0020] Another object of this disclosure is to provide a method for disassembling a dishwasher having an easily disassembled filter assembly.

[0021] The purpose of this disclosure is not limited to the purposes mentioned above. Other unmentioned purposes and advantages of this disclosure can be understood based on the following description and can be more clearly understood based on embodiments according to this disclosure. Furthermore, it will be readily understood that the purposes and advantages of this disclosure can be achieved using the means or combinations thereof as shown in the claims.

[0022] Implementations of a dishwasher may include a washing pump for delivering washing water.

[0023] The dishwasher may include a filter assembly to filter out foreign matter contained in the flowing wash water. The filter assembly may be connected to the wash pump. The filter assembly may be positioned downstream of the wash pump in the direction of wash water flow.

[0024] The condenser can be arranged downstream of the filter assembly in the direction of the wash water flow. The condenser can be connected to the filter assembly. The filter assembly can be detachably connected to the condenser.

[0025] The condenser may include a housing that defines the external shape of the condenser and is configured to allow wash water and refrigerant to flow separately therein. Pipes may be housed within the housing.

[0026] The pipe may include a plurality of pipes arranged spaced apart from each other along the diameter of the housing, wherein each of the plurality of pipes extends in the longitudinal direction of the housing, and wherein the washing water flows in and along these pipes.

[0027] The condenser may include a refrigerant inlet portion that protrudes outward from the housing, in which refrigerant flows through the refrigerant inlet portion into the housing.

[0028] The condenser may also include a refrigerant outlet portion that protrudes outward from the housing, in which refrigerant is discharged from the interior of the housing through the refrigerant outlet portion.

[0029] The condenser may also include a baffle formed within the housing, which is configured to define the flow path of the refrigerant.

[0030] The filter assembly may include a connector, one side of which is attached to the housing and the other side is connected to a pipe connected to the washing pump.

[0031] The filter assembly may also include a filter disposed within the connector. The filter assembly may also include clamps for detachably connecting the condenser and the connector to each other.

[0032] The clamp can fasten to the connector in the area where the housing and the connector are joined together, thereby securing the housing and the connector. The clamp can be formed as a ring.

[0033] One side of the connector can be attached to the outer surface of the condenser. The clamp can be attached to the outer surface of the connector.

[0034] The filter assembly may include a connector, one side of which is attached to the housing and the other side is connected to a pipe connected to the washing pump.

[0035] The filter assembly may include a filter disposed inside the connector.

[0036] The filter may include a filter protrusion formed to protrude upstream of the filter in the direction of the flow of the washing water.

[0037] The filter may also include a filter housing configured to surround the filter protrusion.

[0038] The filter protrusion can be configured such that one side is open and communicates with the water inlet of the pipe, and the other side is formed as a mesh structure.

[0039] The filter protrusions may include a plurality of filter protrusions arranged within the diameter of the filter housing. Each of the plurality of filter protrusions may be aligned with a respective tube in the longitudinal direction of the plurality of tubes.

[0040] The filter protrusion may consist of a top portion and a remaining portion. The top portion may be positioned upstream of the remaining portion in the direction of the wash water flow.

[0041] The top portion may have a curved surface that protrudes towards its upstream position in the flowing washing water.

[0042] At least a portion of the filter can be configured to have a shape that protrudes toward the condenser.

[0043] The filter may include a mesh element having at least a portion formed to protrude toward the condenser.

[0044] The filter may also include a reinforcing portion that bends outward from the end of the mesh element and forms an annulus with a predetermined width. The reinforcing portion increases the rigidity of the filter mesh element.

[0045] The connector may include a small-diameter portion and a large-diameter portion. The pipe connected to the washing pump may be connected to the small-diameter portion, and the large-diameter portion may be connected to the condenser.

[0046] The connector may also include a variable diameter portion disposed between a small diameter portion and a large diameter portion, and having a diameter that gradually increases as the variable diameter portion extends along the flow direction of the washing water.

[0047] The dishwasher may also include a mounting socket having one side that connects to the housing. The diameter of the side connected to the housing may be larger than the diameter of the opposite side.

[0048] The mounting socket may include a first unit connected to the condenser. The mounting socket may also include a second unit disposed on the other side of the first unit.

[0049] The mounting socket may include a third unit disposed between the first unit and the second unit. As the third unit extends toward the second unit, the diameter of the third unit may gradually decrease.

[0050] The first distance, defined as the shortest distance between the filters of each tube in the tube and the end adjacent to the filter, may be greater than the inner diameter of each tube in the tube.

[0051] The filter assembly may also include a retainer that is coupled to the opening portion of the filter and mounted on the connector.

[0052] The retainer may include an annular hollow body; and a first gripping portion disposed at an edge of the body and coupled to an end of the filter. The first gripping portion has a first recess defined therein and extending in the longitudinal direction of the filter assembly.

[0053] The retainer may include: an annular hollow body; and a second gripping portion disposed at an edge of the body and coupled to an end of the filter. The second gripping portion has a second recess defined therein and extending in the diametrical direction of the body.

[0054] At least a portion of the filter can be configured to have a conical shape that protrudes toward the condenser.

[0055] The filter may include a disc-shaped portion having a mesh structure; and a plurality of spacer members protruding from the disc-shaped portion toward the tube. The spacer members may be arranged to be spaced apart from each other in the diametrical direction of the disc-shaped portion.

[0056] The filter can be formed in the shape of a plate, wherein the diameter direction of the filter intersects the longitudinal direction of the tube.

[0057] The dishwasher may also include a tub configured to hold tableware therein; a base disposed below the tub; and a mounting portion disposed in the base. A condenser may be mounted on the mounting portion.

[0058] The condenser can be installed on the mounting section. The refrigerant can condense in the condenser to dissipate latent heat of condensation, allowing the wash water to be heated by the dissipated heat of condensation.

[0059] The dishwasher may also include a water softener that produces soft water. The water softener can be installed on the mounting section.

[0060] The dishwasher may also include a water collector for storing wash water. The water collector can be installed on the mounting section. The water collector can be positioned below the tub.

[0061] The dishwasher may also include a cover detachably attached to a side surface of the base. The cover may be configured to open or close the interior space of the base.

[0062] The dishwasher may also include a cap that is detachably connected to the water softener. The cap can open or close the water inlet of the water softener.

[0063] When the operator wishes to clean or replace the filter, the cover can be removed from the base. The cap can then be removed from the water softener.

[0064] Next, the operator can remove the water collector cover from the water collector. Then, the operator can pull the mounting part out or extend it from the base.

[0065] Afterward, the operator can remove the filter assembly from the mounting section, disassemble the filter assembly, and clean or replace the filter.

[0066] A method for disassembling a dishwasher according to an embodiment may include removing a cover from the base. A method for disassembling a dishwasher may also include removing a cap from a water softener to turn the water softener on and off.

[0067] Disassembly methods for a dishwasher may include removing the water collector cover from the wash tub, thereby opening or closing the top opening of the water collector. Disassembly methods may include disconnecting each water collector and water softener from the tub. Disassembly methods may include pulling or extending the mounting portion from the base.

[0068] In the dishwasher according to this disclosure, the washing water discharged from the washing pump can flow through the filter assembly and be introduced into the condenser. Foreign matter contained in the circulating washing water can be filtered by the filter assembly and then introduced into the condenser.

[0069] Therefore, after a large amount of foreign matter has been removed from the wash water, the wash water can be introduced into multiple pipes with small diameters. This effectively prevents the condenser pipes from becoming clogged by foreign matter contained in the wash water.

[0070] Furthermore, in the dishwasher according to this disclosure, the filter assembly can be detachably connected to the condenser to clean the filter of the filter assembly.

[0071] Therefore, the operator removes the filter assembly from the condenser, disassembles and cleans the filter within, effectively preventing clogging. This improves the dishwasher's performance.

[0072] Furthermore, in the dishwasher according to this disclosure, the operator can easily connect the filter to or remove the filter from the dishwasher by attaching or removing the clamp from the condenser hose. Therefore, cleaning the filter is easy, thus providing convenience for the operator.

[0073] Furthermore, in the dishwasher according to this disclosure, the filter may include a filter protrusion. Additionally, the filter protrusion may include a tip portion disposed upstream of the remaining portion of the filter protrusion in the flow direction of the washing water. This tip portion may be configured to have a curved surface projecting upstream of its location in the flow direction of the washing water.

[0074] Because of this structure, foreign objects do not accumulate on the top portion of the pipe, which is positioned corresponding to the inlet location in the direction of the wash water flow. This allows the wash water to flow smoothly through the filter and condenser even when significant debris accumulates in the filter. This reduces dishwasher malfunctions caused by filter clogging. Furthermore, the filter and condenser are detachable, extending the cleaning cycle and making dishwasher maintenance convenient.

[0075] Furthermore, the dishwasher according to this disclosure may have a structure in which the filter assembly is easily disassembled. Therefore, the disassembly method of the dishwasher facilitates the cleaning or replacement of the filter. Thus, ease of operation can be improved.

[0076] In addition to the effects described above, the specific effects of this disclosure will be described together, along with the specific matters for implementing this disclosure. Attached Figure Description

[0077] Figure 1 This is a cross-sectional view of a dishwasher according to an embodiment.

[0078] Figure 2 This is a schematic diagram illustrating components arranged in the base of a dishwasher according to an embodiment.

[0079] Figure 3 This is a diagram illustrating a condenser and its associated components according to an embodiment.

[0080] Figure 4 yes Figure 3 Cross-sectional view.

[0081] Figure 5This is an exploded view used to illustrate the condenser and its associated components.

[0082] Figure 6 This is a diagram illustrating a filter according to an embodiment.

[0083] Figure 7 This is a diagram illustrating the state in which the lid is removed from the base of the dishwasher in an exemplary embodiment.

[0084] Figure 8 This is a diagram illustrating a portion of a dishwasher with a lid according to another embodiment.

[0085] Figure 9 yes Figure 8 Side view.

[0086] Figure 10 This is an example in Figure 8 The diagram shows the state in which the cover is pivoted to open the front surface of the base.

[0087] Figure 11 yes Figure 10 Side view.

[0088] Figure 12 This is a flowchart illustrating a disassembly method for a dishwasher according to an embodiment.

[0089] Figure 13 This is an illustration showing the lid connected to the base of the dishwasher.

[0090] Figure 14 This is an illustration showing the lid being removed from the base.

[0091] Figure 15 This is an illustration showing the water softener cap and the water collector cover being removed from the dishwasher.

[0092] Figure 16 This is a diagram showing the bottom of the tank with the water softener cap and collector lid removed from the dishwasher.

[0093] Figure 17 This is a diagram illustrating the state of the water softener and water collector after they have been removed from the tank.

[0094] Figure 18 Is in Figure 17 Front view of the area of ​​the dishwasher base in its current state.

[0095] Figure 19 This is an enlarged cross-sectional view of the filter assembly in the implementation method.

[0096] Figure 20 It is based on Figure 19 An enlarged view of the retainer in part 20 of the embodiments.

[0097] Figure 21 It is based on Figure 19 An enlarged view of the retainer of another embodiment of part 21.

[0098] Figure 22 This is a cross-sectional view showing a filter unit according to another embodiment.

[0099] Figure 23 This is a cross-sectional view showing a filter unit according to yet another embodiment.

[0100] Figure 24 This is a cross-sectional view showing a filter unit according to yet another embodiment.

[0101] Figure 25 This is a cross-sectional view showing a condenser and related components according to yet another embodiment.

[0102] Figure 26 It is shown as follows Figure 25 A three-dimensional view of a portion of the condenser shown.

[0103] Figure 27 It is shown Figure 26 A three-dimensional cross-section of a portion of the image.

[0104] Figure 28 Is it when in with Figure 26 When observing from different directions Figure 26 A perspective view of some of the components shown. Detailed Implementation

[0105] The aforementioned objects, features, and advantages will be described in detail below with reference to the accompanying drawings, so that those skilled in the art to which this disclosure pertains can easily practice the technical ideas of this disclosure. In describing this disclosure, detailed descriptions of well-known technologies related to this disclosure will be omitted where it is determined that such detailed descriptions might unnecessarily obscure the main points of this disclosure. Hereinafter, preferred embodiments of this disclosure will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to denote the same or similar components.

[0106] Although terms such as "first" and "second" are used to describe various components, these components are not limited by these terms. These terms are only used to distinguish one component from another, and unless there is an explicit statement to the contrary, "first component" can also be "second component".

[0107] Throughout this document, unless otherwise stated, each part may be singular or plural.

[0108] As used herein, unless the context clearly indicates otherwise, singular expressions include plural expressions. In this application, terms such as “consisting of” or “comprising” should not be construed as necessarily including all of the components or steps described herein, but should be interpreted as possibly excluding some of the components or steps, and may also include additional components or steps.

[0109] Throughout this disclosure, unless otherwise stated, “A and / or B” means A, B or A and B, and unless otherwise stated, “C to D” means including C to D.

[0110] As used in this article, terms such as “upper,” “lower,” and “side” are used to refer to a portion of the dishwasher in its normally installed state, or in one direction.

[0111] Figure 1 This is a cross-sectional view of a dishwasher according to an embodiment. The dishwasher according to the embodiment may include: a housing 11 that defines the appearance of the dishwasher; a tub 12 in which dishes to be washed are housed; a door 20 disposed on the front surface of the tub 12 to open and close the tub 12; and a water collector 100 disposed below the tub 12 to store washing water therein.

[0112] The dishwasher may also include: a plurality of spray arms 13, 14 and 15 disposed in a tub 12 and spraying wash water; a filter 110 disposed in a water collector 100 and filtering the wash water sprayed from at least one of the plurality of spray arms 13, 14 and 15 and returning it to the water collector 100; a wash pump 150 that delivers wash water stored in the water collector 100; and a switching valve 130 that controls the selective flow of wash water delivered by the wash pump 150 to at least one of the plurality of spray arms 13, 14 and 15.

[0113] The tub 12 can be formed in the shape of a hexahedron with an open front surface, and can have a washing chamber 12a defined therein. A connecting hole is formed in the bottom portion 12b of the tub 12, through which washing water flows into the water collector 100. In the washing chamber 12a, a plurality of shelves 16 and 17 are arranged therein, which accommodate washing objects. The plurality of shelves 16 and 17 may include a lower shelf 16 arranged in the lower region of the washing chamber 12a and an upper shelf 17 arranged in the upper region of the washing chamber 12a. The lower shelf 16 and the upper shelf 17 are arranged to be spaced apart from each other in the vertical direction and can slide in the forward direction of the tub 12 and extend from the tub 12.

[0114] Multiple spray arms 13, 14, and 15 are arranged vertically. The multiple spray arms may include: a lower spray arm 13, which is arranged at the lowest end and sprays washing water upward toward the lower shelf 16; an upper spray arm 14, which is arranged on top of the lower spray arm 13 and sprays washing water upward toward the upper shelf 17; and a top spray arm 15, which is arranged at the upper end of the washing chamber 12a and on top of the upper spray arm 14, and sprays washing water downward.

[0115] Multiple spray arms 13, 14, and 15 are supplied with washing water from the washing pump 150 via multiple spray arm connection flow paths 18, 19, and 21. The multiple spray arm connection flow paths 18, 19, and 21 may include: a lower spray arm connection flow path 18, which connects to the lower spray arm 13; an upper spray arm connection flow path 19, which connects to the upper spray arm 14; and a top spray arm connection flow path 21, which connects to the top spray arm 15.

[0116] The lower spray arm 13, the upper spray arm 14, and the top spray arm 15 can be supplied with washing water from the washing pump 150 through the lower spray arm connecting flow path 18, the upper spray arm connecting flow path 19, and the top spray arm connecting flow path 21, respectively.

[0117] The water collector 100 can be arranged below the bottom portion 12b of the tub 12 and can collect washing water. The filter 110 can filter out contaminants from the washing water flowing from the tub 12 to the water collector 100.

[0118] Wash water sprayed by multiple spray arms 13, 14 and 15, along with contaminants deposited on and removed from the target object, falls into the bottom portion 12b of the tank 12. Thus, the contaminant-containing wash water can be filtered as it flows through a filter 110 connected to the bottom portion 12b of the tank 12, allowing contaminant-free wash water to be stored in the collector 100.

[0119] During the washing operation, the washing water circulates through the water collector 100, spray arms 13 to 15, tub 12 and filter 110, while washing the tableware contained in shelves 16 and 17.

[0120] Washing pump 150 supplies washing water stored in water collector 100 to at least one of a plurality of spray arms 13, 14 and 15. Washing pump 150 may include a washing motor that generates rotational force and an impeller that is rotated by the washing motor to deliver washing water. Washing pump 150 may be connected to switching valve 130 and washing water supply flow path 180.

[0121] When the washing pump 150 is operating, the washing water stored in the water collector 100 can be introduced into the washing pump 150 through the water collection flow path 170, and then delivered to the switching valve 130 through the washing water supply flow path 180.

[0122] The switching valve 130 selectively supplies washing water, delivered by the washing pump 150, to at least one of the lower spray arm 13, the upper spray arm 14, and the top spray arm 15. The switching valve 130 can selectively connect the washing water supply flow path 180 to at least one of the multiple spray arm connection flow paths 18, 19, and 21.

[0123] The water collector 100 is connected to a water supply flow path 23 through which washing water supplied from an external water source flows. A water supply valve 22 for controlling the flow rate of washing water supplied from the external water source can be installed in the water supply flow path 23. The water supply valve 22 controls the amount of washing water supplied from the external water source to the water collector 100. When the water supply valve 22 is opened, washing water supplied from the external water source can be introduced into the water collector 100 through the water supply flow path 23.

[0124] The water collector 100 can be connected to a drain flow path 24 for discharging washing water to the outside of the dishwasher. A drain pump 25 can be installed in the drain flow path 24 for discharging washing water from the water collector 100 through the drain flow path 24. When the drain pump 25 operates, the washing water stored in the water collector 100 can be discharged to the outside of the housing 11 through the drain flow path 24.

[0125] The heating device for heating the washing water can be installed inside the water collector 100 or in the washing pump 150. This heating device can be, for example, an electric heater, a heat pump system, etc.

[0126] In this implementation, a heat pump system can be used to heat the wash water. This heat pump system will be described first below.

[0127] A heat pump system is a system that pumps heat from a low-temperature environment to a high-temperature environment. In this regard, a compressor 500 can be used, for example, to achieve the heat pumping. In one implementation, the heat pump system can be implemented using a so-called two-phase flow refrigeration cycle, which raises the temperature of the refrigerant by compressing the two-phase flowing refrigerant into a gaseous state using the compressor 500.

[0128] A heat pump system for performing a two-phase flow refrigeration cycle may include a compressor 500, a condenser 300, an expander, and an evaporator 600. These components are interconnected via piping. As the refrigerant flows and circulates through these components, its phase and temperature change, allowing it to absorb or release heat from the surrounding environment.

[0129] The refrigerant can be introduced into the compressor 500 in a low-temperature gaseous state. The refrigerant is compressed in the compressor 500. From the outlet of the compressor 500, the refrigerant can be introduced into the condenser 300 in a high-temperature and high-pressure superheated gaseous state.

[0130] The refrigerant and the wash water can flow separately in the condenser 300. The refrigerant can be introduced into the condenser 300 and exchange heat with the wash water, and the wash water can be heated after receiving heat from the refrigerant.

[0131] In condenser 300, the refrigerant can undergo a phase change from a superheated gaseous state to a saturated state in which liquid and gas coexist, while the refrigerant is maintained at the theoretically same pressure.

[0132] The refrigerant flows into the condenser 300 in a superheated state, transferring heat to the wash water and thus lowering its temperature. Then, as the refrigerant reaches saturation, the liquid content can be gradually increased while the refrigerant is theoretically maintained at a constant temperature. During this liquefaction process, the refrigerant releases a large amount of latent heat of liquefaction, which the wash water absorbs and is then heated.

[0133] The refrigerant from the condenser 300 can be introduced into the expansion device in a saturated liquid or super-cooled liquid state. This expansion device can be configured as, for example, an expansion valve or a capillary tube device.

[0134] The refrigerant may undergo adiabatic expansion, meaning that its entropy remains theoretically constant within the expansion device. During this expansion, a portion of the refrigerant vaporizes, thus potentially reducing its pressure. As this portion of the refrigerant vaporizes to dissipate its heat of vaporization to the surrounding environment, the overall temperature of the refrigerant may decrease. In other words, the refrigerant can be introduced into the evaporator 600 under a low-temperature, low-pressure condition obtained while flowing through the expansion device.

[0135] When refrigerant is introduced into evaporator 600, the proportion of gas in the refrigerant can gradually increase while absorbing heat from the relatively high-temperature environment. Within evaporator 600, the proportion of gas in the refrigerant may gradually increase while theoretically maintaining the same pressure and temperature for the refrigerant.

[0136] The refrigerant discharged from the evaporator 600 can be introduced into the compressor 500 in which a small amount of liquid is present or in a slightly superheated state. The refrigerant introduced into the compressor 500 can circulate through the compressor 500, condenser 300, expansion unit and evaporator 600 while repeating the above process.

[0137] Typically, refrigeration devices utilize the principle that refrigerant absorbs heat in the evaporator 600. The heat pump system of this embodiment can utilize the heat released by the refrigerant in the condenser 300.

[0138] In a heat pump system, heat exchange occurs between the high-temperature refrigerant and the relatively low-temperature wash water in the condenser 300, thereby heating the wash water. The high-temperature wash water heated by the condenser 300 makes it easier to wash or rinse dishes than wash water at room temperature.

[0139] In this respect, the heat pump system does not always need to operate while the dishwasher is washing or rinsing. For example, when washing or rinsing with room temperature water, the compressor 500 does not operate, allowing room temperature water to be sprayed directly onto the dishes without heating the water.

[0140] Even if the compressor 500 stops operating and the wash water is not heated, the wash water can still flow through the condenser 300 and circulate throughout the dishwasher.

[0141] In another embodiment, a bypass flow path can be defined to bypass the condenser 300. Therefore, when the compressor 500 stops operating, the wash water can flow along this bypass flow path to bypass the condenser, thereby improving the performance of the condenser 300 and extending its service life.

[0142] Figure 2 This is a schematic diagram illustrating the components arranged in the base 30 of a dishwasher according to an embodiment. Components constituting the heat pump system may be arranged, for example, below the tub 12.

[0143] The dishwasher may include a base 30 disposed below the tub 12. A heat pump system and other devices for driving the dishwasher may be disposed in the base 30. The base 30 has an internal space defined therein and positioned below the tub 12, and this internal space may be used as a machine chamber in which various mechanical components are disposed. The dishwasher may include a mounting portion 40 on which a condenser 300 is mounted. The mounting portion 40 may be disposed in the base 30. The mounting portion 40 may be disposed below the tub 12.

[0144] The mounting portion 40 can typically be formed as a plate. Various components can be attached to the upper surface of the mounting portion 40.

[0145] The mounting portion 40 can be arranged inside the base 30. The mounting portion 40 can be easily removed from the base 30. For example, the mounting portion 40 can be mounted to the base 30 using a fastening device. This fastening device can be loosened, and the mounting portion 40 can be removed as follows: Figure 2 As indicated by the arrow, it moves in a sliding manner, thus allowing it to be removed from the base 30.

[0146] While the mounting portion 40 is guided by guide rails formed on the inner surface of the base 30, the mounting portion can slide to extend out of the base 30.

[0147] The condenser 300 can be arranged on the mounting portion 40. The refrigerant and wash water can flow separately in the condenser 300. The refrigerant can be condensed in the condenser 300. The refrigerant can be condensed to release its latent heat of condensation, allowing the wash water to be heated by the heat released by the refrigerant.

[0148] Although not shown, the expansion valve can be positioned appropriately in the mounting portion 40. Since the expansion valve is smaller than the other components constituting the heat pump system, it can be appropriately positioned within the available space of the mounting portion 40.

[0149] The dishwasher may include a water softener 41 for generating soft water. The water softener 41 may be installed on the mounting portion 40. Soft water refers to water containing very few or no minerals (e.g., calcium and magnesium). When using soft water to wash dishes, the washing efficiency can be improved, and the lifespan of the dishes can be extended. Therefore, it is necessary to use soft water to wash dishes as needed.

[0150] In one embodiment, washing water can be introduced into a water softener 41, and the water can be converted into soft water using the water softener 41, which can then be used for washing dishes. However, the water softener 41 is not an essential component of a dishwasher.

[0151] The water softener 41 can be connected to the water collector 100 via a pipe. Therefore, water introduced into the water softener 41 can be softened by the water softener 41. The softened water discharged from the water softener 41 can be introduced into the water collector 100 and used for washing dishes.

[0152] The dishwasher may include a water collector 100 therein, which stores washing water. The water collector 100 may be mounted on the mounting portion 40. The water collector 100 may be arranged below the tub 12.

[0153] The washing water stored in the water collector 100 can flow under the operation of the washing pump 150, and can wash the dishes contained in the tub 12 while circulating through the water collector 100, the washing pump 150, the multiple spray arms 13, 14 and 15 and the tub 12.

[0154] In this regard, the washing water is heated by a heat pump system and sprayed at high temperature from multiple spray arms 13, 14 and 15 to wash or rinse the dishes contained in the tub 12, thereby improving washing efficiency.

[0155] In addition, the washing pump 150 can be installed on the mounting part 40.

[0156] Furthermore, compressor 500 can be installed on mounting section 40. Compressor 500 can be connected to condenser 300. Compressor 500 compresses refrigerant.

[0157] In addition, the evaporator 600 can be installed on the mounting section 40.

[0158] As described above, the compressor 500, condenser 300, expansion device and evaporator 600 that constitute the heat pump system are interconnected by pipes, and the refrigerant may undergo a phase change as it circulates through the components that constitute the heat pump system, resulting in changes in its temperature and pressure.

[0159] In addition, when the washing pump 150 is operating, the washing water can flow sequentially through the washing pump 150, the condenser 300, the multiple spray arms 13, 14 and 15, the tank 12 and the water collector 100, and can be reintroduced into the washing pump 150 and circulated through the above-mentioned components again.

[0160] The refrigerant and wash water can flow separately in the condenser 300. Therefore, heat is transferred from the high-temperature refrigerant to the wash water, allowing the refrigerant to condense while the wash water is heated. To increase the area of ​​the interface between the wash water and the refrigerant, i.e., the heat transfer area between them, the flow path of the wash water can consist of multiple pipes 320.

[0161] Because multiple pipes 320 are arranged in the condenser 300, wash water can flow to the pipe with the larger diameter and then to the pipe 320 with the smaller diameter. When the pipe 320 has a relatively small diameter, blockage may occur in the pipe 320 with the smaller diameter.

[0162] The washing water flowing through pipe 320 can be circulated through the dishwasher under the operation of washing pump 150. Therefore, when washing dishes, foreign matter adhering to and removed from the surface of the dishes can be included in the circulating washing water.

[0163] When foreign matter contained in the washing water is introduced into the small-diameter pipe 320, the foreign matter may not leave the pipe 320 and may adhere to the inner surface of the pipe 320. As the washing water circulation process continues, the amount of foreign matter adhering to the inner surface of the pipe 320 may continue to increase.

[0164] Therefore, as the dishwasher continues to be used, foreign matter continues to accumulate inside pipe 320, which may worsen the flow of wash water in condenser 300. If this continues, at least some sections of pipe 320 may become clogged, thus potentially causing the flow of wash water to deteriorate even more rapidly.

[0165] As a result, damage to the condenser 300 may occur, the operation of the dishwasher may deteriorate, and in severe cases, the dishwasher may stop operating.

[0166] Therefore, a structure is needed that can inhibit the accumulation of foreign matter in the condenser 300 and filter these foreign matter. Furthermore, it is necessary to design a structure that inhibits the accumulation of foreign matter, making the structure easily disassembled so that the foreign matter filtered and accumulated thereon can be easily removed.

[0167] The structure will be described in detail below with reference to the accompanying drawings.

[0168] Figure 3 This is a diagram illustrating the condenser 300 and its associated components according to an embodiment. Figure 4 yes Figure 3 Cross-sectional view.

[0169] The dishwasher may include a filter assembly 200 for filtering out foreign matter contained in the flowing wash water. The filter assembly 200 may be connected to a wash pump 150. The filter assembly 200 may be arranged downstream of the wash pump 150 in the direction of wash water flow.

[0170] The condenser 300 can be arranged downstream of the filter assembly 200 in the direction of the wash water flow. The condenser 300 can be connected to the filter assembly 200.

[0171] Therefore, the wash water discharged from the wash pump 150 can flow through the filter assembly 200 and be introduced into the condenser 300. After the foreign matter contained in the circulating wash water is filtered out by the filter assembly 200, the wash water with the foreign matter removed can be introduced into the condenser 300.

[0172] Therefore, the wash water can be introduced into multiple tubes 320 with small diameters while the foreign matter contained therein is almost completely removed. Thus, the blockage of the condenser 300 tubes by foreign matter contained in the wash water can be very effectively suppressed.

[0173] When the dishwasher is running continuously, foreign matter contained in the wash water can adhere to the filter assembly 200. With prolonged use, the amount of foreign matter accumulating in the filter assembly 200 increases, and eventually, the filter assembly 200 may become clogged. To prevent this, it is necessary to clean the filter assembly 200 regularly.

[0174] In one embodiment, the filter assembly 200 may be detachably connected to the condenser 300 for cleaning purposes.

[0175] Therefore, the operator removes the filter assembly 200 from the condenser 300 and cleans it, effectively preventing the filter assembly 200 from being clogged by foreign objects. This improves the performance of the dishwasher.

[0176] The condenser 300 may include a housing 310 in which wash water and refrigerant flow separately. The housing 310 may define the external shape of the condenser 300. Pipes 320 may be housed within the housing 310.

[0177] The housing 310 can generally be formed as a cylinder with an internal space formed therein. The housing 310 can be made of, for example, a solid material with excellent corrosion resistance (e.g., copper, aluminum, stainless steel, etc.) to withstand high-pressure refrigerants.

[0178] The space through which the refrigerant flows can be confined within the housing 310. When high-temperature refrigerant flows into this space, heat can be released to the outside of the housing 310. Since this heat release to the outside reduces the performance of the condenser 300, an insulating material can be provided on the outer surface of the housing 310 to surround the housing 310, thereby suppressing the release of heat to the outside of the condenser.

[0179] The tube 320 may include a plurality of tubes housed within the housing 310 and separated from each other. Washing water may flow through the tube 320. The tube 320 may be implemented as, for example, a hollow tube having a cylindrical cross-section.

[0180] The tubes 320 can be arranged to be spaced apart from each other. Specifically, the tubes 320 can be arranged to be spaced apart from each other in the diametrical direction of the housing 310.

[0181] Because multiple tubes 320 are installed, the contact area between the refrigerant and the washing water, i.e., the heat exchange area, can be increased. Furthermore, due to this increased heat exchange area, uniform heat exchange may occur between the flowing refrigerant and the washing water, thereby improving heat exchange efficiency.

[0182] The condenser 300 may include a refrigerant inlet portion 331 through which refrigerant is introduced into the housing 310. The refrigerant inlet portion 331 may protrude outward from the housing 310. The condenser 300 may include a refrigerant outlet portion 332 through which refrigerant is discharged from the interior of the housing 310. The refrigerant outlet portion 332 may protrude outward from the housing 310.

[0183] For example, such as Figure 3 and Figure 4 As shown, each of the refrigerant inlet portion 331 and the refrigerant outlet portion 332 can be formed as a pipe having a predetermined length in a direction intersecting the longitudinal direction of the housing 310.

[0184] One end of each of the refrigerant inlet section 331 and the refrigerant outlet section 332 may be connected to a pipe through which the refrigerant flows.

[0185] The refrigerant inlet section 331 and the refrigerant outlet section 332 can be positioned relative to the flow direction of each of the washing water and the refrigerant.

[0186] For example, when the condenser 300 is implemented as a condenser 300 in which the flow directions of the washing water and the refrigerant are opposite to each other, the refrigerant inlet portion 331 can be arranged at a position adjacent to the washing water outlet of the condenser 300, and the refrigerant outlet portion 332 can be arranged at a position adjacent to the washing water inlet of the condenser 300.

[0187] In another example, when the condenser 300 is implemented such that the flow directions of the washing water and the refrigerant are the same, the refrigerant inlet portion 331 can be arranged adjacent to the washing water inlet of the condenser 300, and the refrigerant outlet portion 332 can be arranged adjacent to the washing water outlet of the condenser 300.

[0188] The refrigerant inlet 331 and refrigerant outlet 332 can be arranged to be spaced apart from each other in the longitudinal direction of the housing 310. The refrigerant introduced into the housing 310 does not flow but stagnates at the corners of the housing 310. Therefore, it is necessary to select the positions of the refrigerant inlet 331 and refrigerant outlet 332 to reduce the refrigerant stagnation area.

[0189] The refrigerant inlet portion 331 and the refrigerant outlet portion 332 can be positioned adjacent to two opposite ends in the longitudinal direction of the condenser 300, respectively. This structure can reduce the refrigerant stagnation area in the corners of the housing 310 where the refrigerant does not flow and remains stagnant.

[0190] However, the refrigerant inlet 331 and the refrigerant outlet 332 can be located away from the position where the baffle 340 is provided, so that the refrigerant flows smoothly.

[0191] The condenser 300 may include a baffle 340 that defines a flow path for the refrigerant. The baffle 340 may be formed within the housing 310.

[0192] For example, multiple baffles 340 may be provided. Each baffle in the baffles 340 may be arranged within the housing 310, and the baffles 340 may be arranged to be spaced apart from each other in the longitudinal direction of the housing 310.

[0193] For example, the baffle 340 may protrude inward from the inner wall surface of the housing 310. The baffle 340 may protrude in a direction intersecting the longitudinal direction of the housing 310.

[0194] The baffles 340 can be arranged in a staggered or zigzag pattern along the longitudinal direction of the housing 310 in the vertical or diametrical direction. Therefore, baffles 340 can be provided to block a portion of the refrigerant flow generated within the housing 310.

[0195] Due to this structure, the baffle 340 can block the flow of refrigerant and change its flow direction. Therefore, the baffle 340 can increase the flow length of the refrigerant within the housing 310.

[0196] The filter assembly 200 may include a connector 210, one side of which is attached to the housing 310. The other side of the connector 210 may be connected to a pipe connected to the washing pump 150.

[0197] The filter assembly 200 may include a filter 220 disposed within the connector 210. The filter 220 may be used to filter out foreign matter contained in the washing water flowing into the filter assembly 200.

[0198] The filter assembly 200 may include a clamp 230 for detachably connecting the condenser 300 to the connector 210. The clamp 230 can press against the connector 210 connected to the condenser 300 to seal the interface between the condenser 300 and the connector 210. Therefore, the clamp 230 can prevent the formation of gaps between the condenser 300 and the connector 210. Thus, the clamp 230 can effectively suppress leakage between the condenser 300 and the connector 210.

[0199] The clamp 230 can be fastened to the connector 210 at the position where the housing 310 and the connector 210 are connected to each other, thereby fixing the housing 310 and the connector 210 to each other.

[0200] Figure 5This is an exploded view illustrating the condenser 300 and its related components. (Refer to...) Figure 5 The clamp 230 can be formed into a ring.

[0201] The clamp 230 can be made of various materials. For example, the clamp 230 can be made of a rubber material with strong tensile strength and easy elastic deformation to securely connect the connector 210 to the housing 310.

[0202] In another example, the clamp 230 may be made of a metal material with good corrosion resistance, such as copper, aluminum, or stainless steel. When the clamp 230 is made of a metal material, a connecting portion can be formed at the clamp, allowing the operator to easily attach the clamp 230 to and remove the clamp 230 from the connector 210. In this respect, the clamp 230 may have a structure in which a connecting mechanism, such as screws, is mounted on this connecting portion.

[0203] One side of the connector 210 can be connected to the outer surface of the condenser 300. Specifically, one side of the connector 210 can be connected to the outer surface of the housing 310. The clamp 230 can be connected to the outer surface of the connector 210.

[0204] Therefore, in order to connect the connector 210 to the condenser 300, the operator can first connect the connector 210 to the housing 310 of the condenser 300. Next, the operator can connect the clamp 230 to the outer surface of the housing 310 at the connection between the housing 310 and the connector 210. Thus, the connector 210 can be securely connected to the housing 310.

[0205] When connector 210 is removed from condenser 300 to clean filter 220, the operator can first remove clamp 230 from housing 310. Next, the operator can remove connector 210 from housing 310.

[0206] Therefore, connector 210 and housing 310 can be removed from each other. Filter 220, disposed within the removed connector 210, can be removed from connector 210 for cleaning.

[0207] Figure 6 This is a diagram illustrating a filter according to an embodiment.

[0208] The filter 220 may be configured such that at least a portion of it has a convex shape in the direction toward the condenser 300.

[0209] Because the filter 220 is formed in a convex shape, the total area of ​​the filter can be increased compared to the case where the filter 220 is in a disc shape.

[0210] Therefore, the total filter surface area through which washing water flows can be increased. Consequently, foreign matter contained in the washing water may adhere to the entire filter, which has a relatively large surface area. This extends the filter's cleaning cycle and thus reduces the frequency of cleaning operations, providing convenience for users and operators.

[0211] The filter 220 can be formed to bulge in the direction toward the condenser 300. Therefore, the filter 220 can be formed to bulge in the direction of the wash water flow.

[0212] Compared to a filter 220 that protrudes in the direction opposite to the flow of the washing water, this structure effectively reduces the flow resistance of the washing water. Therefore, the washing water can circulate smoothly.

[0213] The filter 220 may include a mesh 221 that is at least partially projecting in a direction toward the condenser 300. The mesh 221 may be configured in a mesh shape having holes defined therein through which wash water flows.

[0214] Washing water can flow through these holes. In this case, foreign objects contained in the washing water may not pass through the holes and may be captured by the filter 220. When the size of the holes formed in the mesh 221 is small, the effect of filtering foreign objects may increase, but the flow resistance of the washing water may increase. Therefore, the size of the holes can be appropriately selected considering the trade-off between the effect of filtering foreign objects and the flow resistance of the washing water.

[0215] The area of ​​the pores in the mesh 221 of the filter 220 of the filter assembly 200 can be equal to or smaller than the area of ​​the pores formed in the mesh of the filter 110 in the water collector. Therefore, a considerable number of foreign objects are filtered by the filter 110 of the water collector. For this reason, the size of the foreign objects that have passed through the filter 110 of the water collector can be smaller than the area of ​​the mesh of the filter 110. Therefore, the pore area of ​​the mesh 221 of the condenser filter assembly 200 is smaller than the pore area of ​​the filter 110, thereby filtering out more foreign objects.

[0216] The filter 220 may include a reinforcing portion 222 that bends from the end of the mesh member 221. The reinforcing portion 222 may be configured as an annular shape with a predetermined width. The reinforcing portion 222 may enhance the rigidity of the filter 220.

[0217] Due to the presence of numerous pores, the mesh element 221 has a generally weak structure. Therefore, the mesh element 221 can deform due to the momentum of the flowing wash water. When the mesh element 221 deforms, the amount of wash water that has flowed through it but not through it may increase. Consequently, foreign matter not filtered by the filter 220 may flow into the pipe 320, potentially causing blockage.

[0218] The reinforcing portion 222 can be arranged at the end of the mesh member 221 and formed as an annulus with a predetermined width. Therefore, the reinforcing portion 222 can strengthen the mesh member 221 and maintain its shape, preventing it from deforming due to flowing wash water. This effectively prevents unfiltered foreign matter from entering the pipe 320. Consequently, the performance of the filter 220 can be improved.

[0219] The connector 210 can be connected to a pipe with a small inner diameter on one side. The connector 210 can be connected to a housing 310 with a large inner diameter on the other side. Therefore, the connector 210 may include a portion having an inner diameter that increases as it extends in the direction of the flow of the washing water.

[0220] The connector 210 can be made of a metallic material (e.g., copper, aluminum, stainless steel, etc.) with excellent corrosion resistance and heat resistance to withstand high-temperature washing water. In another embodiment, the connector 210 can be made of a non-metallic material with excellent corrosion resistance and heat resistance, such as silicone resin.

[0221] The connector 210 may include a small-diameter portion 211 to which the conduit connected to the wash pump 150 is connected. The diameter of the small-diameter portion 211 may be smaller than the diameter of the large-diameter portion 212. The connector 210 may also include a large-diameter portion 212 to which the condenser 300 is connected. The diameter of the large-diameter portion 212 may be larger than the diameter of the small-diameter portion 211.

[0222] The filter 220 can be housed in the large-diameter portion 212. Therefore, the length and cross-sectional area of ​​the large-diameter portion 212 can correspond to the length and cross-sectional area of ​​the filter 220.

[0223] The connector 210 may include a variable diameter portion 213 disposed between the small diameter portion 211 and the large diameter portion 212. The diameter of the variable diameter portion 213 may gradually increase as the variable diameter portion extends along the flow direction of the washing water.

[0224] As the water flows through connector 210, the cross-sectional area of ​​the washing water can gradually increase due to the structure of connector 210. Because of this structure, the flow of washing water introduced into condenser 300 can be relatively stable compared to a situation where the cross-sectional area increases rapidly. Therefore, the flow resistance of the washing water can be reduced. Thus, the washing water can flow smoothly in connector 210 and condenser 300.

[0225] In this embodiment, by attaching or removing the clamp 230 to or from the condenser, the operator can easily attach or remove the filter 220 from the dishwasher. This facilitates the cleaning of the filter 220 and provides convenience for the operator.

[0226] The dishwasher may include a mounting socket 400, one side of which is connected to the housing 310. The mounting socket 400 may be configured such that the diameter of the side connected to the housing 310 is larger than the diameter of the other side.

[0227] The mounting socket 400 connects the housing 310 of the condenser 300, which has a large diameter, to a wash water pipe with a small diameter. Wash water can be discharged from the housing 310 and introduced into the wash water pipe. The mounting socket 400 can connect the housing 310 and the wash water pipes with different diameters to each other. The mounting socket 400 can be configured in a shape substantially symmetrical to the shape of the connector 210.

[0228] The mounting socket 400 may include a first unit 410 connected to the condenser 300. The first unit 410 may have a diameter larger than that of the second unit 420. The mounting socket 400 may include a second unit 420 disposed on the other side of the first unit 410. The second unit 420 may have a diameter smaller than that of the first unit 410.

[0229] The mounting socket 400 may include a third unit 430 disposed between the first unit 410 and the second unit 420. The diameter of the third unit 430 may gradually decrease as the third unit extends toward the second unit 420. The diameter of the third unit 430 may gradually decrease as the third unit extends along the flow direction of the washing water.

[0230] As the water flows through the third unit 430, the cross-sectional area of ​​the washing water flow can gradually decrease due to the structure of the third unit 430. Because of this structure, the flow of washing water discharged from the condenser 300 can be relatively stable compared to a situation where the cross-sectional area decreases rapidly. Therefore, the flow resistance of the washing water can be reduced. Thus, the washing water discharged from the condenser 300 can flow smoothly through the mounting socket 400 and then through the washing water pipe.

[0231] Figure 7This is a diagram illustrating the state in which the cover 50 is removed from the base 30 in the dishwasher according to an exemplary embodiment.

[0232] The dishwasher may include a cover 50 detachably attached to a side surface of the base 30. The cover 50 can open and close the interior of the base 30.

[0233] As mentioned above, the filter 220 needs to be removed from the dishwasher periodically for cleaning or replacement. Therefore, the cover 50 can be configured to allow the operator to easily remove the filter 220 from the dishwasher.

[0234] The cover 50 can be disposed on the side of the base 30 where the filter assembly 200 is arranged. The cover 50 can be disposed on, for example, the front surface of the dishwasher. Typically, the dishwasher can be installed indoors in a built-in manner. Therefore, the front surface of the dishwasher is exposed to the outside, while the side and rear surfaces of the dishwasher are not exposed to the outside, making it difficult for the user or operator to access the dishwasher components through the side and rear surfaces.

[0235] Therefore, the condenser 300 and the filter assembly 200 can be arranged in the front area of ​​the base 30 to facilitate the removal of the filter 220. Thus, in order to easily disassemble the filter assembly 200 by exposing it to the outside, a cover 50 exposing the filter assembly 200 to the outside can be provided on the front surface of the dishwasher.

[0236] In one implementation, such as Figure 7 As shown, the cover 50 can be configured to be completely removed from the base 30. In this case, the operator can remove the cover from the base and then remove the mounting portion 40 from the base 30. Furthermore, the filter 220 can be removed from the dishwasher.

[0237] Alternatively, the cover 50 can be configured to selectively open or close the entire front surface of the base. Furthermore, the filter assembly 200 can be disassembled without removing the mounting portion 40 from the base 30. Additionally, the filter 220 can be removed from the filter assembly 200.

[0238] In another embodiment, the cover 50 may be configured to selectively open or close only the portion of the front surface of the base 30 corresponding to the area where the condenser 300 and filter assembly 200 are arranged. In this case, the operator can manipulate the cover 50 to open a portion of the front surface of the base. Furthermore, the filter assembly 200 can be disassembled without removing the mounting portion 40 from the base 30. Additionally, the filter 220 can be removed from the filter assembly 200.

[0239] The cover 50, which has a structure covering the entire front surface of the opening base 30, will be described below.

[0240] like Figure 7 As shown, the cover 50 can be attached to the base 30 using a coupling mechanism and / or in a form-fitting manner. The operator can remove the cover 50 from the base 30. Additionally, the operator can disassemble the externally exposed filter assembly 200 and remove the filter 220 from the filter assembly 200.

[0241] After cleaning or replacing the filter 220, the operator can reattach the cover 50 to the base 30.

[0242] Figure 8 This is a diagram illustrating a portion of a dishwasher with a lid 50 provided according to another embodiment. Figure 9 yes Figure 8 Side view.

[0243] like Figure 8 and Figure 9 As shown, the cover 50 can be pivotally hinged to the base 30 about a hinge, without being completely removed from the base 30. Therefore, when the cover 50 pivots to open the front surface of the base, the filter assembly 200 can be exposed to the outside.

[0244] Figure 10 This is an example in Figure 8 The view shows the state of the cover 50 pivoting to open the front surface of the base. Figure 11 yes Figure 10 Side view.

[0245] When the operator moves the cover 50 upwards by pivoting it about the hinge, as Figure 10 and Figure 11 As shown, the condenser 300 and filter assembly 200, arranged in the front region of the base 30, are exposed to the outside. In this state, the operator can disassemble the filter assembly 200. The filter housed in the filter assembly 200 can be removed from the filter assembly 200. In addition, the filter 220 can be cleaned or replaced.

[0246] The method for disassembling a dishwasher according to the embodiment for removing the filter 220 from the dishwasher will be described in detail below.

[0247] First, refer to Figure 15 The components related to the disassembly of the dishwasher will be described later.

[0248] The dishwasher may include a cap 401 detachably connected to the water softener 41. The cap 401 can open or close the water inlet of the water softener 41. The cap 401 may protrude upward from the bottom portion 12b of the tank 12. The cap 401 may be connected to the water inlet of the water softener 41, for example, by a threaded connection.

[0249] When soft water is needed, the user can remove cap 401. Additionally, wash water can be injected into the open water inlet of water softener 41. Therefore, water softener 41 can produce soft water. The soft water can be introduced into water collector 100 and used for washing.

[0250] To remove the mounting portion 40 from the base 30, the operator can remove the cap 401 and remove the water softener 41 from the bottom portion 12b of the tank 12. Afterward, the operator can remove the mounting portion 40 from the base 30.

[0251] The dishwasher may include a water collector cover 101 partially disposed in the tub 12. The water collector cover 101 may be detachably attached to the water collector 100. The water collector cover 101 may open or close the upper opening of the water collector 100.

[0252] The holes through which the washing water flows can be formed in a part of the water collector cover 101. Washing water sprayed onto the tank 12 may fall off due to gravity. The fallen washing water can be introduced into the water collector 100 through the holes formed in the water collector cover 101.

[0253] When the mounting part 40 is removed from the base 30, the operator can remove the water collector cover 101 and then remove the water collector 100 from the bottom part 12b of the tank 12. Afterward, the mounting part 40 can be removed from the base 30.

[0254] When the cover 50 is configured to be removed from the base to open the entire front surface of the base 30, the user can pull the mounting portion 40 out from the base 30. Therefore, the operator can more easily access the mounting portion 40 compared to when it is not pulled out from the base 30. Consequently, the operator can easily replace the filter 220.

[0255] For example, the operator can remove the mounting portion 40 from the base 30, and then pull or extend the mounting portion 40 out of the base 30 in a sliding manner. Afterward, the operator can remove the filter 220 from the removed mounting portion 40 and clean or replace the filter 220.

[0256] When cleaning or replacing filter 220, the operator can remove cover 50 from base 30. Next, the operator can remove cap 401 from water softener 41. Then, the operator can pull collector cover 101 out of collector 100. Next, the operator can remove mounting part 40 from base 30. Afterward, the operator can remove filter 220 from mounting part 40 and clean or replace the removed filter.

[0257] In another example, when the cover 50 is hinged to the base 30, the operator can move the cover 50 upward by pivoting about the hinge to open the front surface of the base 30 without removing the entire cover 50 from the base 30. Alternatively, the operator can pull the mounting portion 40 out of the base 30.

[0258] Figure 12 This is a flowchart illustrating a disassembly method for a dishwasher according to an embodiment. The disassembly method for a dishwasher according to an embodiment may include removing the cover 50 from the base 30 in S110. In the dishwasher disassembly method, in S120, the cap 401 used to open and close the water softener 41 may be removed from the water softener 41.

[0259] The method of disassembling the dishwasher may include, in S130, removing the water collector cover 101 that opens or closes the upper opening of the water collector 100 from the tank 12. The method of disassembling the dishwasher may include, in S140, detaching the water softener 41 from each of the water collector 100 and the tank 12. The method of disassembling the dishwasher may include, in S150, pulling the mounting portion 40 out of the base 30.

[0260] The following section will describe in detail the steps involved in disassembling the dishwasher.

[0261] Figure 13 The illustration shows the lid 50 attached to the base 30 of the dishwasher. Figure 14 This is an illustration showing the state where the cover 50 is removed from the base 30.

[0262] First, in S110, the water collector cover 101, which is used to open or close the upper opening of the water collector 100, can be removed from the bucket 12. The operator can then... Figure 13 The cover 50 is removed from the base 30 to open the front surface of the base 30.

[0263] In another example, when the cover 50 is hinged to the base, the operator can pivot the cover 50 upward about the hinge to open the front surface of the base 30 without removing the cover 50 from the base 30.

[0264] Figure 15 This is a diagram illustrating the state of the water softener 41 cap 401 and the water collector cover 101 of the water collector 100 after being removed from the dishwasher. Figure 16 This is a diagram of the bottom portion 12b of the bucket 12 when the cap 401 of the water softener 41 and the water collector cover 101 of the water collector 100 are removed from the dishwasher.

[0265] Next, in S120, the cap 401 used to turn the water softener 41 on and off can be removed from the water softener 41.

[0266] The operator can remove the cap 401, which is located on the bottom portion 12b of the tank 12, from the water softener 41. Therefore, the water softener 41 can be removed from the bottom portion 12b of the tank 12.

[0267] Next, in S130, the water collector cover 101, used to open or close the upper opening of the water collector 100, can be removed from the bucket 12. The operator can remove the water collector cover 101 from the bottom portion 12b of the bucket 12. Therefore, the water collector 100 can be removed from the bottom portion 12b of the bucket 12.

[0268] Reference Figure 15 Some components of the filter 110, which filters the washing water that will be collected in the water collector 100, can be connected to the water collector cover 101. Therefore, when the water collector cover 101 is removed, some components of the filter 110, together with the water collector cover 101, can be removed from the dishwasher.

[0269] The steps S110 to S130 above do not necessarily have to be performed in the order of S110, S120 and S130. The operator can change the order at will to carry out the disassembly work.

[0270] Figure 17 This is a diagram illustrating the state in which the water softener 41 and the water collector 100 are removed from the tank 12.

[0271] Next, in S140, the connection between the water softener 41 and each of the water collector 100 and the tank 12 can be released. The water inlet of the water softener 41 can protrude upward and can be force-fitted to a hole formed in the bottom portion 12b of the tank 12.

[0272] Similarly, the top of the water collector 100 can also be connected to another hole formed in the bottom portion 12b of the bucket 12 by an interference fit.

[0273] Therefore, even after the cap 401 and the water collector cover 101 are removed, the water softener 41 and the water collector 100 can remain connected to the bottom portion 12b of the tank 12.

[0274] Operators can, for example Figure 17 Press down on the water inlet of the water softener 41 and the upper part of the water collector 100 as indicated by the middle arrow. Therefore, the water inlet of the water softener 41 and the upper part of the water collector 100 can move downwards as indicated by the arrow. Thus, the water softener 41 and the water collector 100 can be removed from the bottom portion 12b of the tank 12.

[0275] Figure 18 Is in Figure 17 Front view of the dishwasher base 30 in its current state.

[0276] Next, in S150, the mounting portion 40 can be pulled out from the base 30. Since the connection between the water softener and each of the collector and the tank was released in step S140, the components arranged on the mounting portion 40 can be completely removed from the tank 12.

[0277] Therefore, the operator can slide the mounting portion 40 to pull it out from the base 30. Thus, the mounting portion 40 can be fully exposed to the outside. Therefore, the operator can disassemble the filter assembly 200 arranged on the mounting portion 40, remove the filter 220 from the filter assembly 200, and clean or replace the filter.

[0278] After the filter 220 has been cleaned or replaced, the mounting part 40 can be reassembled onto the base 30 in the reverse order of the disassembly process described above.

[0279] In one embodiment, the dishwasher may have a structure in which the filter assembly 200 is easily disassembled. Therefore, the disassembly method of the dishwasher facilitates the cleaning or replacement of the filter 220. This improves ease of operation.

[0280] Figure 19 This is an enlarged cross-sectional view of a filter assembly 200 according to one embodiment.

[0281] In an implementation, the first distance D1, which is defined as the shortest distance between the end of the filter 220 and the tube 320, can be greater than the inner diameter TD of the tube 320.

[0282] When the first distance D1 is greater than the inner diameter TD of the pipe 320, the washing water that is disturbed when flowing through the filter 220 can be changed into a stable flow state with a certain degree of stability, and then can be introduced into the pipe 320 in a relatively stable manner.

[0283] Therefore, this structure reduces the flow resistance of the washing water in the flow path between pipe 320 and filter 220. This allows the washing water to flow smoothly. Furthermore, this is advantageous for maintaining the water pressure of the washing water.

[0284] In one embodiment, the filter assembly 200 may include a retainer 240 that is coupled to an opening of the filter 220. The retainer 240 may be positioned upstream of the filter 220 in the flow path of the washing water in the direction of water flow. The retainer 240 may be coupled to the filter 220 to stably connect the filter 220 to the connector 210.

[0285] In addition, the retainer 240 can enhance the rigidity of the filter 220, making the filter 220 less susceptible to deformation by the flowing washing water.

[0286] In addition, the retainer 240 prevents the formation of a gap between the connector 210 and the filter 220. Therefore, the retainer 240 effectively prevents foreign objects from escaping through the gap.

[0287] The retainer 240 can be mounted on the connector 210. Due to the difference between the diameter of the large-diameter portion 212 and the diameter of the variable-diameter portion 213 of the connector 210, the retainer 240 can be press-fitted to the connector 210. In another embodiment, threads can be formed on the respective retainers in the retainer 240 and on the boundary between the large-diameter portion 212 and the variable-diameter portion 213 of the connector 210. Therefore, the retainer 240 and the connector 210 can be helically connected to each other. In this way, the retainer 240 can be stably mounted on the connector 210.

[0288] The retainer 240 and the filter 220 can also be connected to each other by a force-fit or a screw connection. The connection structure between the retainer 240 and the filter 220 will be described in detail below.

[0289] Figure 20 It is based on Figure 19 An enlarged view of the retainer 240 in part 20 of the embodiment. Figure 20 The example shown is a retainer 240 to which a filter 220 without reinforcement 222 is attached.

[0290] The retainer 240 may include an annular body 241 in which a hollow space is formed. The retainer 240 may include a first gripping portion 242 disposed at the edge of the body 241. The first gripping portion 242 may be coupled to an end portion of the filter 220. The first gripping portion 242 may include a first recess 2421 extending in the longitudinal direction of the filter assembly 200.

[0291] The first gripping portion 242 may extend continuously along the circumference of the body 241. In another embodiment, a plurality of first gripping portions 242 may be arranged to be spaced apart from each other along the circumference of the body 241.

[0292] The end of the opening portion of the filter 220, that is, the upstream portion in the flow direction of the washing water of the filter 220, can be formed as an annular shape. The end of the annular shape is inserted into the first recess 2421 formed in the first gripping portion 242, so that the filter 220 and the retainer 240 can be connected to each other.

[0293] The filter 220 and the retainer 240 can be connected to each other by force or by screw connection.

[0294] Figure 21 It is based on Figure 19 An enlarged view of the retainer 240 of another embodiment of part 21. Figure 21 An example is a retainer 240 to which a filter 220 having a reinforcing portion 222 is coupled.

[0295] The retainer 240 may include an annular body 241 in which a hollow space is formed. The retainer 240 may include a second gripping portion 243 disposed at the edge of the body 241. The second gripping portion 243 may be coupled to an end of the filter 220. The second gripping portion 243 may include a second recess 2431 extending in the diametrical direction of the body 241.

[0296] The second gripping portion 243 may extend continuously along the circumference of the body 241. In another embodiment, a plurality of second gripping portions 243 may be arranged to be spaced apart from each other along the circumference of the body 241.

[0297] The filter 220 has a reinforcing portion 222 formed on the end of the filter opening. The annular reinforcing portion 222 formed on the end of the filter 220 can be fitted into a second recess 2431 formed in the second gripping portion 243. Therefore, the filter 220 and the retainer 240 can be connected to each other.

[0298] The reinforcing part 222 can be connected to the second recess 2431 of the second gripping part 243 in a force-fit manner.

[0299] Figure 22 This is a cross-sectional view showing a filter 220 according to yet another embodiment. In the filter 220 according to the following embodiments, for example, descriptions of content that is repeated above, such as the connection structure between the filter 220 and the retainer 240, may be omitted.

[0300] like Figure 22 As shown, filter 220 can be configured to have a conical shape that at least partially convex in the direction toward condenser 300. Filter 220 can have a straight cross-section, for example, a "V" shape.

[0301] In this structure, compared to the case where the cross-section of filter 220 is curved, the manufacture of filter 220 is easier, and the manufacturing time and cost of filter 220 can be reduced.

[0302] Figure 23 This is a cross-sectional view showing a filter 220 according to yet another embodiment.

[0303] like Figure 23As shown, filter 220 may include a disc-shaped portion 223 in which a mesh structure is formed. Filter 220 may include spacer members 224 that protrude from the disc-shaped portion 223 toward tube 320. A plurality of spacer members 224 may be arranged to be spaced apart from each other in the diametrical direction of the disc-shaped portion 223.

[0304] The spacer member 224 can contact the pipe 320 or the housing to maintain the spacing between the disc portion 223 and the pipe 320. Therefore, the washing water that has flowed through the disc portion 223 can be changed to a slightly more stable, steady flow state, and then flow into the pipe 320 in a stable flow state. Thus, the flow resistance of the washing water can be reduced.

[0305] This structure of filter 220 can reduce the volume of each of filter 220 and connector 210, thereby increasing the volumetric efficiency of the dishwasher. Furthermore, this structure of filter 220 can be simpler than the structure of filter 220 described above, thus making the manufacture of a filter 220 with this structure easier.

[0306] Figure 24 This is a cross-sectional view illustrating a filter 220 according to yet another embodiment.

[0307] like Figure 24 As shown, the filter 220 can be configured in a plate shape, oriented such that its diameter direction intersects the longitudinal direction of the housing. The plate-shaped filter 220 can be formed into a disc shape having a shape corresponding to the connector 210.

[0308] Compared to the filter 220 described above, the filter 220 with this structure is the simplest and smallest in size. Therefore, the manufacturing time and cost of the filter 220 can be reduced, and the volumetric efficiency of the dishwasher can be increased.

[0309] Furthermore, the filter 220 with this structure may have one side that contacts the pipe 320 or the housing 310 and the other side that connects to the retainer 240. Therefore, the filter 220 can be stably fixed to the connector 210. Thus, the position of the filter 220 can be effectively prevented from changing due to the flow of washing water.

[0310] Figure 25 This is a cross-sectional view illustrating a condenser 300 and its associated components according to another embodiment. Figure 26 This is an example Figure 25 A perspective view of a portion of the condenser 300 illustrated herein. Descriptions of content identical to the above will be omitted below.

[0311] like Figure 25 and 26As shown, the filter assembly 200 may include a connector 210, one side of which is connected to the housing 310 and the other side is connected to a pipe connected to the washing pump 150. Additionally, the filter assembly 200 may include a filter 220 disposed within the connector 210.

[0312] The filter 220 may include a filter protrusion 225 that protrudes upstream in the direction of the flow of the washing water. The filter 220 may include a filter housing 226 provided to surround the filter protrusion 225.

[0313] The filter housing 226 is generally cup-shaped, and a plurality of filter protrusions 225 can be arranged within the filter housing. The filter housing 226 can be accommodated in the connector 210, and one side of it can face the water inlet of the pipe 320. The other side of the filter housing 226 is open. The filter protrusions 225 can be accommodated in the internal space defined within the filter housing 226.

[0314] In one example, at least a portion of the filter 220 may be formed as a mesh element, through which washing water flows. The filter protrusion 225 may be provided as a mesh element. Alternatively, both the filter protrusion 225 and the filter housing 226 may be provided as mesh elements.

[0315] The filter protrusion 225 can be configured such that one side is open and communicates with the water inlet of the pipe 320, and the other side is formed in a mesh manner. Therefore, washing water can flow through the mesh on the other side of the filter protrusion 225 and through its open side, and be introduced into the pipe 320. Foreign matter contained in the washing water can accumulate within the filter housing 226 without penetrating the filter protrusion 225. Foreign matter accumulated in this way can be removed by an operator disassembling the filter assembly 200 and cleaning the filter 220.

[0316] The number of filter protrusions 225 can correspond to the number of multiple tubes 320. Each filter protrusion in the plurality of filter protrusions 225 can be aligned with each tube in the plurality of tubes 320 along the length of the condenser housing. Therefore, the wash water that has flowed through the filter protrusions 225 can be directly introduced into the water inlet of the tube 320 without encountering large flow resistance. Due to this structure, the flow resistance of the wash water passing through the filter 220 and flowing into the tube 320 can be effectively reduced, and the wash water can flow smoothly.

[0317] Figure 27 This is an example Figure 26 A three-dimensional cross-section of a portion of the image. Figure 28 Is it when in with Figure 26When observing from different directions Figure 26 A perspective view of some of the components shown.

[0318] The filter protrusion 225 may include a tip portion 225a facing upstream of it in the direction of the flow of the washing water. The tip portion 225a may be arranged at a position corresponding to the water inlet of the pipe 320, that is, at a position overlapping with the position of the water inlet of the pipe 320 in the direction of the flow of the washing water.

[0319] Therefore, a large amount of washing water can flow through multiple top sections 225a and be introduced into pipe 320.

[0320] The filter protrusion 225 can be formed into a grid shape.

[0321] In another embodiment, to increase the rigidity of the filter protrusion 225 and improve the ease of manufacturing the filter protrusion, the top portion 225a can be formed as a mesh only at a position corresponding to the water inlet of the pipe 320 in the direction of the washing water flow, and the rest of the filter protrusion 225 can be formed as a closed structure through which washing water does not flow. Even with this structure, a considerable amount of washing water flows through the top portion 225a, making the flow resistance of the washing water very low.

[0322] Multiple filter protrusions 225 are arranged spaced apart from each other in the diametrical direction of the filter housing, such that recessed spaces can be formed between the filter protrusions 225. Foreign matter may accumulate in the recessed spaces. Even when foreign matter accumulates in the recessed spaces, a large amount of washing water flows through the filter protrusions 225, so that the washing water flow is not disturbed by the accumulated foreign matter.

[0323] The top portion 225a can be configured to have a curved surface that protrudes upstream in the direction of the washing water flow. Due to this configuration, foreign matter will not accumulate on the upstream end surface of the filter protrusion 225, i.e., on the curved surface of the top portion 225a in the direction of the washing water flow, before the washing water flows over the top portion 225a.

[0324] Because the curved surface of the tip portion 225a protrudes upstream in the direction of the washing water flow, it can be formed into a streamlined shape relative to the flow of the washing water. Therefore, when the washing water flows, foreign matter adhering to the curved surface of the tip portion 225a protruding upstream in the direction of the washing water flow can be actively carried away or washed away by the washing water. Thus, the accumulation of foreign matter on the curved surface of the tip portion 225a protruding upstream in the direction of the washing water flow can be effectively suppressed.

[0325] Foreign matter removed from the top portion 225a and carried or washed away by the washing water does not pass through the filter 220, but can accumulate in the aforementioned recessed space. Since the recessed space does not interfere with the flow of washing water, the flow resistance of the washing water caused by the foreign matter accumulating in the recessed space is very low. Therefore, even when a large amount of foreign matter accumulates in the filter 220, the washing water can flow smoothly through the filter 220.

[0326] In another embodiment, the top portion 225a may be configured as a cone shape pointing upstream in the direction of the washing water flow. This cone shape may have the same effect as a convex surface.

[0327] In one embodiment, the filter 220 may include a filter protrusion 225. Furthermore, the filter protrusion 225 may include a top portion 225a and a remaining portion, wherein the top portion 225a may be positioned upstream of the remaining portion in the flow direction of the washing water. The top portion 225a may be configured as a curved surface protruding upstream of itself in the flow direction of the washing water.

[0328] Due to this structure, foreign matter does not accumulate on the top portion 225a, which is located at a position corresponding to the water inlet of pipe 320 in the direction of wash water flow. Therefore, even when foreign matter significantly accumulates in the filter 220, wash water can flow smoothly through the filter 220 and condenser 300. This reduces dishwasher malfunctions caused by filter 220 clogging. Furthermore, the cleaning cycle for disassembling and cleaning the filter 220 is extended, making dishwasher maintenance convenient.

[0329] The present disclosure has been described above with reference to the accompanying drawings illustrated herein. However, the present disclosure is not limited to the embodiments and drawings disclosed herein, and it will be apparent to those skilled in the art that various modifications can be made to it within the scope of the technical concept of the present disclosure. Furthermore, even if the effects of the configuration according to the present disclosure are not explicitly described and explained in the description of the embodiments of the present disclosure, it should be apparent that the predictable effects arising therefrom should be appreciated.

Claims

1. A dishwasher, the dishwasher comprising: A washing pump, which is used to deliver washing water; A filter assembly connected to the washing pump and located downstream of the washing pump in the direction of flow of the washing water, wherein the filter assembly is configured to filter foreign matter contained in the flowing washing water; and A condenser, connected to the filter assembly and located downstream of the filter assembly in the flow direction of the wash water, The filter assembly is detachably connected to the condenser.

2. The dishwasher according to claim 1, wherein, The condenser includes: A housing that defines the external shape of the condenser and is configured such that the washing water and refrigerant flow separately within the housing; and A plurality of pipes are received in the housing and arranged to be spaced apart from each other on the diameter of the housing, wherein each of the plurality of pipes extends in the longitudinal direction of the housing, and wherein the washing water flows in the pipes and along the pipes.

3. The dishwasher according to claim 2, wherein, The condenser includes: A refrigerant inlet portion protrudes outward from the housing, wherein the refrigerant flows through the refrigerant inlet portion into the housing; A refrigerant outlet portion protrudes outward from the housing, wherein the refrigerant is discharged from the interior of the housing through the refrigerant outlet portion; and A baffle is formed within the housing and configured to define the flow path of the refrigerant.

4. The dishwasher according to claim 2, wherein, The filter assembly includes: A connector having one side connected to the housing and the other side connected to a pipe connected to the washing pump; A filter, the filter being arranged within the connector; and A clamp for detachably connecting the condenser and the connector to each other.

5. The dishwasher according to claim 2, wherein, The filter assembly includes: A connector having one side coupled to the housing and the other side connected to a pipe connected to the washing pump; and A filter, the filter being arranged within the connector, The filter includes: A filter protrusion, the filter protrusion being formed to protrude upstream of the filter in the direction of the flow of the washing water; and A filter housing configured to surround the filter protrusion.

6. The dishwasher according to claim 5, wherein, The filter protrusion is configured such that one side of the filter protrusion is open and communicates with the water inlet of the pipe, and the other side of the filter protrusion is formed with a mesh structure. The filter protrusions include a plurality of filter protrusions arranged along the diameter of the filter housing. Wherein, each of the plurality of filter protrusions is aligned with each of the plurality of pipes along the length of each pipe.

7. The dishwasher according to claim 5, wherein, The filter protrusion consists of a top portion and a remaining portion, wherein the top portion is located upstream of the remaining portion in the flow direction of the washing water. The top portion has a curved surface that protrudes towards the top portion at a position upstream of the flowing washing water.

8. The dishwasher according to claim 4, wherein, At least a portion of the filter is configured to have a shape that protrudes toward the condenser.

9. The dishwasher according to claim 8, wherein, The filter includes: A mesh element, the mesh element having at least a portion formed to protrude toward the condenser; and The reinforcing portion is bent outward from the end of the mesh element and formed into an annulus with a predetermined width, wherein the reinforcing portion enhances the rigidity of the mesh element of the filter.

10. The dishwasher according to claim 4, wherein, The connector includes: The small-diameter portion is connected to a pipe connected to the washing pump; The large-diameter portion, which is connected to the condenser; and A variable diameter portion is arranged between the small diameter portion and the large diameter portion, and has a diameter that gradually increases as the variable diameter portion extends along the flow direction of the washing water.

Images