Dish washer

Abstract

The present invention relates to a dishwasher in which the compressor, condenser, expansion valve, evaporator, and refrigerant piping constituting the heat pump system are arranged in the base so that they can be collectively pulled in and out through the open front surface of the base, thereby allowing the entire heat pump system to be pulled out to the outside without the need to separate the tub from the base when maintenance and repair of the heat pump system is required, even with only the door, front panel functioning as a baseboard, and lower frame disassembled, so as to significantly improve the convenience of maintenance and repair.

Description

Technology Field

[0001] The present invention relates to a dishwasher, and more specifically, to a dishwasher in which the compressor, condenser, expansion valve, evaporator, and refrigerant piping constituting the heat pump system are arranged in the base so that they can be collectively pulled in and out through the open front surface of the base, thereby allowing the entire heat pump system to be pulled out to the outside without the need to separate the tub from the base when maintenance and repair of the heat pump system is required, even with only the door, front panel functioning as a baseboard, and lower frame disassembled, so as to significantly improve the convenience of maintenance and repair. Background Technology

[0003] A dishwasher is a device that cleans items stored inside, such as dishes and cooking utensils, by spraying cleaning water, such as regular water. At this time, the cleaning water used may contain detergent.

[0004] A dishwasher is generally configured to include a tub forming a washing space, a storage compartment accommodating objects to be washed inside the tub, a spray arm spraying washing water into the storage compartment, and a sump storing water and supplying washing water to the spray arm.

[0005] By using such a dishwasher, the time and effort required for washing items such as dishes after a meal can be reduced, thereby contributing to user convenience.

[0006] When using a dishwasher for washing, the wash water and air can be heated to enhance the washing effect. An electric heater can be used as a means of heating the wash water and air.

[0007] Meanwhile, dishwashers equipped with heat pump devices instead of electric heaters as an alternative heating method are emerging.

[0008] Since heat pumps have significantly higher energy efficiency compared to electric heaters, heating wash water with a heat pump can reduce electricity consumption compared to electric heaters.

[0009] In this regard, Chinese Patent Publication No. 118806186 (Prior Art 001) discloses the configuration of a dishwasher including a heat pump device as a heat source for washing water. Prior art literature

[0011] Chinese Patent Publication No. 118806186 The problem to be solved

[0012] However, the dishwasher disclosed in the aforementioned prior art document 001 is configured such that the compressor, condenser, expansion valve, and evaporator constituting the heat pump device are each individually arranged on the bottom surface of the base and positioned at dispersed locations.

[0013] Therefore, when repairing or replacing any one of the components of the heat pump device of prior art 001, such as the compressor, condenser, expansion valve, and evaporator, the entire case and tub of the dishwasher must be separated from the base, which may result in a problem of having a structure that is very disadvantageous for the maintenance and repair of the heat pump device.

[0014] In addition, the heat pump device of the dishwasher disclosed in prior art 001 is configured such that when assembled to the base, each component is individually assembled and fixed to the base.

[0015] Therefore, the dishwasher disclosed in prior art 001 is highly likely to have a problem in that the manufacturing process for assembling the heat pump device, sump, and water softener to the base must undergo a relatively complex process.

[0016] Furthermore, the dishwasher disclosed in prior art document 001 has a problem in that the structure of the base becomes very complex and manufacturing costs may increase because structures or fastening means for supporting and fixing the compressor, condenser, expansion valve, evaporator, and refrigerant piping, etc., which constitute the heat pump device, and structures or fastening means for fixing the sump and water softener, etc., must be added to the base.

[0017] The present invention is devised to solve the problems of the aforementioned prior art, and has a first objective of providing a dishwasher that can significantly improve the convenience of maintenance and repair by configuring the compressor, condenser, expansion valve, evaporator, and refrigerant piping constituting the heat pump system to be arranged in the base so that they can be collectively pulled in and out through the open front surface of the base, thereby allowing the entire heat pump system to be pulled out to the outside without the need to separate the tub from the base, even when only the door, front panel functioning as a baseboard, and lower frame are disassembled.

[0018] In addition, the present invention has a second objective of providing a dishwasher in which at least a sump and a water softener, together with the components of a heat pump system, are configured to be mounted on a module base rather than a base, thereby greatly simplifying the process of assembling and connecting the heat pump system, sump, and water softener to the base.

[0019] In addition, the third objective of the present invention is to provide a dishwasher configured so that the sump and water softener can be collectively removed and removed from the base along with the heat pump system while mounted on the module base, thereby significantly improving the convenience of maintenance and repair of the sump and water softener.

[0020] In addition, the fourth objective of the present invention is to provide a dishwasher in which the structure of the base can be greatly simplified by configuring the module base to be directly supported on the ground and configuring the bottom surface of the base to be partially omitted in the area corresponding to the module base.

[0021] The objects of the present invention are not limited to those mentioned above, and other unmentioned objects and advantages of the present invention may be understood from the following description and will be more clearly understood by the embodiments of the present invention. Furthermore, it will be readily apparent that the objects and advantages of the present invention can be realized by the means and combinations thereof set forth in the claims. means of solving the problem

[0023] A dishwasher according to the present invention comprises: a tub forming a washing space and accommodating dishes; a base forming a machine room and disposed below the tub; a sump disposed below the tub and storing washing water to be supplied to the tub; and a heat pump module disposed in the machine room and heating the washing water supplied to the sump; wherein the heat pump module is coupled to the base so as to be removable along the front-rear direction from the base.

[0024] In addition, the heat pump module can be withdrawn from or inserted into the base while sliding along the front and rear directions.

[0025] Additionally, the heat pump module comprises: a compressor for compressing a refrigerant; a condenser into which the refrigerant passing through the compressor is introduced and which heats the cleaning water to be supplied to the tub; an evaporator into which the refrigerant passing through the condenser is introduced; and a module base on which the compressor, the condenser, and the evaporator are mounted; and the module base may be disposed so as to be removable on the base.

[0026] In addition, the upper portion of the sump is coupled to the lower wall of the tub, and the lower portion of the sump can be positioned on the module base so as to be movable relative to the module base along the vertical direction.

[0027] In addition, the sump can be collectively drawn from the base and introduced into the base while mounted on the module base together with the compressor, the condenser, and the evaporator.

[0028] In addition, the sump may be moved relative to the downward direction before being withdrawn collectively from the base.

[0029] Additionally, it further includes a washing pump that pressurizes the washing water stored in the sump and supplies it to the tub; wherein the washing pump and the upper part of the sump are positioned on the module base such that they partially overlap each other when viewed from the upper direction, and the upper part of the sump can be separated from the lower wall of the tub before being collectively withdrawn from the base.

[0030] Additionally, it further includes a water softening device for softening the washing water to be supplied to the sump; and the water softening device may be coupled to the module base so as to be movable relative to the module base along the vertical direction.

[0031] In addition, the above water softening device can be collectively withdrawn from the base and introduced into the base while mounted on the module base together with the compressor, the condenser, and the evaporator.

[0032] In addition, the water softening device may be moved relative to the downward direction before being withdrawn collectively from the base.

[0033] Additionally, it further includes a water jacket for storing washing water to be supplied to the water softening device; and the water softening device can be separated from the water jacket before being withdrawn collectively from the base.

[0034] In addition, the condenser may be positioned in front of the sump.

[0035] In addition, the condenser can be arranged on the module base such that the left-right direction is the length direction.

[0036] Additionally, the module base comprises: a base plate providing an installation area on which the compressor, the condenser, and the evaporator are mounted; and a shear wall coupled to the front end of the base plate and formed to protrude upward from the base plate; and when viewed from the front, the condenser may be partially obscured by the shear wall.

[0037] In addition, the area of ​​the portion where the condenser is covered by the shear wall can be formed to be smaller than the area of ​​the portion where the condenser is not covered by the shear wall.

[0038] In addition, the heat pump module can pass through the front wall of the base and be introduced into the interior of the base.

[0039] Additionally, the module base comprises: a base plate providing an installation area for mounting the compressor, the condenser, and the evaporator; and a shear wall coupled to the front end of the base plate and formed to protrude upward from the base plate; and when the heat pump module is inserted into the interior of the base and mounted on the base, the shear wall can be coupled to the front wall of the base.

[0040] In addition, when the heat pump module is mounted on the base, the left-right movement of the shear wall can be prevented by the front wall of the base.

[0041] In addition, when the heat pump module is mounted on the base, the upward movement of the shear wall can be prevented by the front wall of the base.

[0042] In addition, during the process of the heat pump module being introduced into the interior of the base, the front wall of the base may guide the forward and backward movement of the shear wall. Effects of the invention

[0044] The dishwasher according to the present invention has the effect of significantly improving the convenience of maintenance and repair by allowing the heat pump system, sump, and water softener to be pulled out entirely to the outside through an open side of the base without the need to separate the tub from the base when maintenance and repair of the heat pump system, sump, and water softener are required.

[0045] In addition, the dishwasher according to the present invention has the effect of greatly simplifying the process for assembling and connecting the heat pump system, sump, and water softener to the base.

[0046] In addition, the dishwasher according to the present invention has the effect of eliminating the means for individually attaching and fixing the components of the heat pump system, the sump, and the water softener to the base.

[0047] In addition, the dishwasher according to the present invention has the effect of greatly simplifying the structure of the base by allowing the bottom surface of the base to be at least partially omitted.

[0048] In addition, the dishwasher according to the present invention is configured such that a modular heat pump system can be moved in and out along the horizontal direction relative to the base, thereby having the effect of significantly improving the convenience of the moving-in and out process for maintenance and repair.

[0049] In addition to the effects described above, the specific effects of the present invention are described together with the specific details for implementing the invention below. Brief explanation of the drawing

[0051] FIG. 1 is a front perspective view of a dishwasher according to an embodiment of the present invention. Figure 2 is a schematic cross-sectional view of the dishwasher shown in Figure 1. FIG. 3 is a front perspective view showing the door of the dishwasher shown in FIG. 1 in an open state. FIG. 4 is a schematic diagram illustrating the configuration of a heat pump module provided in a dishwasher according to the present invention. FIG. 5 is a front perspective view illustrating a situation in which a heat pump module, sump, and water softener constituting a dishwasher according to the present invention are inserted and removed through an open front wall of the base. FIG. 6 is a front perspective view showing a state in which a sump and a water softener are mounted on a module base together with a heat pump module according to an embodiment of the present invention. FIG. 7 is a front perspective view showing the tub and the base with the module base shown in FIG. 6 mounted on the base. FIG. 8 is a front perspective view illustrating the process of separating the lower frame from the state shown in FIG. 7 and the separated state. FIG. 9 is a front perspective view illustrating the process of separating the wash water filter module from the sump and tub and separating the inlet cap from the connecting duct of the water softener from the state shown in FIG. 8, and the separated state. FIGS. 10 and 11 are a partial enlarged view and a vertical cross-sectional view illustrating the state in which the sump is connected to the tub and the state in which the water softener is connected to the tub before the batch withdrawal process of the module base proceeds. FIGS. 12 and 13 are a partial enlarged view and a vertical cross-sectional view illustrating the state in which the sump is separated from the tub and the state in which the water softener is separated from the tub before the batch withdrawal process of the module base proceeds. Figures 14 and 15 are magnified views of parts of Figure 13. FIG. 16 is a forward perspective view showing the module base being pulled forward from the front wall of the base and the module base being removed. Specific details for implementing the invention

[0052] The aforementioned objectives, features, and advantages are described in detail below with reference to the attached drawings, thereby enabling those skilled in the art to easily implement the technical concept of the present invention. In describing the present invention, detailed descriptions of known technologies related to the present invention are omitted if it is determined that such descriptions would unnecessarily obscure the essence of the invention. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

[0053] Although terms such as "first," "second," etc., are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used merely to distinguish one component from another, and unless specifically stated otherwise, the first component may also be the second component.

[0054] Throughout the specification, unless specifically stated otherwise, each component may be singular or plural.

[0055] In the following, the statement that any configuration is placed on the "upper (or lower)" of a component or on the "upper (or lower)" of a component may mean not only that any configuration is placed in contact with the upper (or lower) surface of said component, but also that another configuration may be interposed between said component and any configuration placed on (or below) said component.

[0056] In addition, where it is stated that one component is "connected," "combined," or "connected" to another component, it should be understood that while the components may be directly connected or connected to each other, another component may be "interposed" between each component, or each component may be "connected," "combined," or "connected" through another component.

[0057] Singular expressions used in this specification include plural expressions unless the context clearly indicates otherwise. In this application, terms such as "composed of" or "comprising" should not be interpreted as necessarily including all of the various components or steps described in the specification, and should be interpreted as meaning that some of the components or steps may be omitted or additional components or steps may be included.

[0058] Additionally, singular expressions used in this specification include plural expressions unless the context clearly indicates otherwise. In this application, terms such as "composed of" or "comprising" should not be interpreted as necessarily including all of the various components or steps described in the specification, and should be interpreted as meaning that some of the components or steps may not be included, or that additional components or steps may be included.

[0059] Throughout the specification, "A and / or B" means A, B, or A and B unless specifically stated otherwise, and "C to D" means C or more and D or less unless specifically stated otherwise.

[0060] Hereinafter, the present invention will be described with reference to drawings illustrating the configuration according to an embodiment of the present invention.

[0061] [Overall Structure of the Dishwasher]

[0062] Hereinafter, the overall structure of the dishwasher (1) according to the present invention will be described in detail with reference to the attached drawings.

[0063] FIG. 1 is a front perspective view showing a dishwasher (1) according to the present invention, FIG. 2 is a simplified cross-sectional view showing the internal structure of the dishwasher (1) according to the present invention, and FIG. 3 is a front perspective view showing the dishwasher (1) with the door (30) open.

[0064] As illustrated in FIGS. 1 to 3, the dishwasher (1) according to the present invention may include a case (10) that forms an outer shape.

[0065] For example, the case (10) may include an upper panel (11), a left side panel (12), a right side panel (13), and a front panel (15) that form the upper surface, left side, right side, and front surface, respectively, of the exterior of the dishwasher (1).

[0066] These upper panel (11), left side panel (12) and right side panel (13) can be formed integrally or formed individually and assembled.

[0067] Additionally, the front panel (15) is positioned at the bottom of the door (30) and corresponds to a configuration commonly known as a baseboard. The front panel (15) can be attached to the front wall of the base (90).

[0068] In addition, the dishwasher (1) according to the present invention may include a tub (20) that is installed inside a case (10), forms a washing space (21) where objects to be washed are washed, and has an open front surface.

[0069] In addition, the dishwasher (1) according to the present invention may include a door (30) that opens and closes the open front surface of the tub (20).

[0070] In addition, the dishwasher (1) according to the present invention may include a base (90) that is positioned at the bottom of the tub (2) and serves to support the tub (2).

[0071] Additionally, the dishwasher (1) according to the present invention may include a drive unit (40) located at the bottom of the tub (20) for supplying, collecting, circulating, and draining washing water for washing objects.

[0072] In addition, the dishwasher (1) according to the present invention may include a storage portion (50) that is detachably provided in the internal washing space (21) of the tub (20) and on which an object to be washed is placed.

[0073] In addition, the dishwasher (1) according to the present invention may include a spray unit installed adjacent to the storage unit (50) and spraying water for washing objects to be washed.

[0074] At this time, the objects to be cleaned placed in the storage section (50) may be, for example, tableware such as bowls, plates, spoons, chopsticks, and other cooking utensils. Unless otherwise mentioned below, the objects to be cleaned will be referred to as tableware.

[0075] First, the tub (20) can be formed in a box shape with the front surface completely open, corresponding to a configuration known as a so-called washing tank.

[0076] A washing space (21) is formed inside the tub (20), and the open front surface can be opened and closed by a door (30).

[0077] The tub (20) can be formed by press forming a metal plate that is resistant to high temperature and moisture, for example, a stainless steel-based material.

[0078] Additionally, on the inner surface of the tub (20), a plurality of brackets may be arranged for the purpose of supporting and installing functional components such as the storage unit (50) and injection unit described later within the tub (20).

[0079] Meanwhile, the drive unit (40) may be configured to include a sump (41) positioned below the tub (20) and storing washing water, a sump cover (42) separating the sump (41) from the tub (20), a water supply unit (43) supplying washing water to the sump (41) from the outside, a drainage unit (44) discharging washing water from the sump (41) to the outside, a washing pump (45) and a supply channel (46) for supplying washing water from the sump (41) to a spray unit.

[0080] The sump cover (42) is positioned above the sump (41) and can serve to spatially separate the tub (20) and the sump (41).

[0081] Additionally, the sump cover (42) may be provided with a plurality of recovery holes to recover the washing water sprayed into the washing space (21) through the spraying part into the sump (41).

[0082] That is, the washing water sprayed from the sprayer toward the dishes falls to the bottom of the washing space (21) and can be recovered back into the sump (41) via the sump cover (42).

[0083] Therefore, the sump cover (42) can perform the function of filtering at least partially food residue and the like contained in the washing water together with the washing water filter module described later.

[0084] The washing pump (45) is provided on one side of the sump (41) and functions to pressurize washing water and supply it to the spraying section.

[0085] One end of the washing pump (45) can be connected to the sump (41) and the other end can be connected to the supply path (46).

[0086] The washing pump (45) may be equipped with an impeller (451) and a motor (453), etc. When power is supplied to the motor (453), the impeller (451) rotates, and the washing water in the sump (41) is pressurized and then supplied to the spraying section through the supply path (46).

[0087] Although not shown, the washing pump (45) may be equipped with a washing water heater to heat the washing water supplied to the tub (20) during the washing or heating and rinsing process.

[0088] Meanwhile, the supply channel (46) serves to selectively supply washing water supplied from the washing pump (45) to the spraying section.

[0089] For example, the supply channel (46) may include a first supply channel (461) connected to the lower injection arm (61), and a second supply channel (463) connected to the upper injection arm (62) and the top nozzle (63).

[0090] The supply channel (46) may be equipped with a supply channel switching valve (465) that selectively opens and closes the supply channels (461, 463).

[0091] At this time, the supply flow switching valve (465) can be controlled so that each supply flow (461, 463) is opened sequentially and selectively or simultaneously.

[0092] The switching valve (465) can be detachably connected to the valve coupling portion of the sump (41).

[0093] Meanwhile, the spray unit is provided to spray washing water onto dishes stored in the storage unit (50).

[0094] More specifically, the spraying unit may include a lower spray arm (61) located at the bottom of the tub (20) and spraying cleaning water to the lower rack (51).

[0095] Additionally, the spraying unit may include an upper spray arm (62) located between the lower rack (51) and the upper rack (52) and spraying cleaning water to the lower rack (51) and the upper rack (52).

[0096] Additionally, the spraying unit may include a top nozzle (63) located at the top of the tub (20) and spraying washing water to the top rack (53) or the upper rack (52).

[0097] In particular, the lower spray arm (61) and the upper spray arm (62) are rotatably provided in the washing space (21) of the tub (20) so as to spray washing water while rotating toward the dishes mounted in the storage unit (50).

[0098] The lower spray arm (61) can be rotatably supported on the upper side of the sump cover (42) so as to rotate at the lower side of the lower rack (51) and spray cleaning water toward the lower rack (51).

[0099] In addition, the upper spray arm (62) can be rotatably supported by a spray arm holder (467) so that it can spray cleaning water while rotating between the lower rack (51) and the upper rack (52).

[0100] Meanwhile, although not shown, the lower wall (25) of the tub (20) may be further provided with means to divert the cleaning water sprayed from the lower spray arm (61) to the upper direction (U-direction) in order to increase cleaning efficiency.

[0101] As the detailed configuration of the injection unit can be any configuration already known in the industry, the specific description of the injection unit's configuration will be omitted below.

[0102] Meanwhile, the washing space (21) may be provided with a storage section (50) for storing tableware.

[0103] The storage unit (50) can be provided to be inserted and removed from the interior of the tub (20) through the open front surface of the tub (20).

[0104] For example, FIG. 2 illustrates an embodiment comprising a storage unit configured to include a lower rack (51) located at the bottom of the tub (20) and capable of storing relatively large tableware, an upper rack (52) located above the lower rack (51) and capable of storing medium-sized tableware, and a top rack (53) located at the top of the tub (20) and capable of storing small tableware.

[0105] The present invention is not limited thereto, but will be described based on an embodiment of a dishwasher (1) equipped with three storage compartments (50) as illustrated.

[0106] These lower racks (51), upper racks (52) and top racks (53) can each be configured to be pulled out to the outside through the open front surface of the tub (20).

[0107] To this end, guide rails (54) may be provided on the side walls (26, 27) forming the inner surface of the tub (20). As described below, the guide rails (54) may include, for example, an upper rail (542), a lower rail (541), and a top rail (543).

[0108] A roller or wheel may be provided on the lower rack (51), upper rack (52), and top rack (53), respectively. By pulling the lower rack (51), upper rack (52), and top rack (53) out through the front of the tub (20), the user can store dishes in them or easily take out dishes that have been washed from them.

[0109] The guide rail (54) may be provided as a fixed guide rail in the form of a simple rail to guide the withdrawal and insertion of the storage unit (50), or as an extendable guide rail that guides the withdrawal and insertion of the storage unit (50) and increases the withdrawal distance as the storage unit (50) is withdrawn.

[0110] Meanwhile, the door (30) is intended to open and close the open front surface of the tub (20) described above.

[0111] A hinge portion (not shown) for opening and closing the door (30) is provided at the lower part of the normally open front surface, and, for example, the door (30) can be opened by rotating the door (30) in a top-down manner with the hinge portion as a rotation axis.

[0112] Here, on the outer surface of the door (30), a handle (31) for opening the door (30) and a control panel (32) for controlling the operation of the dishwasher (1) may be provided.

[0113] As described above, the control panel (32) may be equipped with a display (33) that visually displays information regarding the current operating status of the dishwasher (1), etc.

[0114] Additionally, the control panel (32) may be provided with a button section (34) including a selection button for inputting a user's course selection operation and a power button for inputting a user's operation to turn the dishwasher on and off.

[0115] Meanwhile, the rear panel (30b) forming the inner side of the door (30) can form one side of the tub (20) when the door (30) is closed, and at the same time, form a seating surface on which the lower rack (51) of the storage unit (50) can be supported when the door (30) is fully opened.

[0116] To this end, when the door (30) is fully opened, it is preferable that the rear panel (30b) of the door (30) forms a horizontal plane in the same direction as the guide rail (54) in which the lower rack (51) is guided extends.

[0117] Meanwhile, the rear panel (30b) constituting the inner surface of the door (30) may be further equipped with a detergent supply device for automatically supplying detergent into the interior of the tub (20).

[0118] Additionally, a door position detection unit (36) for detecting whether the door (30) is in a closed state or an open state may be provided on the outer side of the upper surface of the tub (20). For example, the door position detection unit (36) may include a door position sensor (S_d) or a latch sensor that detects the position of a door latch not shown.

[0119] Meanwhile, a drying air supply unit (80) for generating and supplying high or low temperature drying air to the cleaning space inside the tub (20) may be provided at the bottom of the tub (20).

[0120] As described above, the drying air supply unit (80) may be configured to include a filter member (883) for filtering external air, a blower fan (825) for generating a drying air stream, a heater (84) for heating the drying air stream, and an airflow guide (83) that is positioned inside the tub (20) and guides the drying air stream.

[0121] The lower wall (25) of the tub (20) may be provided with a drying air supply hole (254) so ​​that high-temperature drying air generated from the drying air supply unit (80) can be introduced into the interior of the tub (20).

[0122] By supplying high-temperature drying air or low-temperature drying air through such a drying air supply unit (80) into the interior of the tub (20) during the drying process, the drying efficiency and sterilization effect for tableware can be significantly improved compared to conventional methods.

[0123] Meanwhile, some of the airflow supplied into the interior of the tub (20) and humidified while drying the dishes may be discharged to the outside, and the remaining portion may be sucked into the drying air supply unit (80), and the discharge of the airflow may be achieved through partial opening of the door (30) or through a separate exhaust means not shown.

[0124] An intake duct (81) for recovering humid air from the tub (20) may be provided on the outer side of the left wall (26) or the outer side of the right wall (27) of the tub (20).

[0125] Meanwhile, the base (90) may provide a receiving space or machine room in which components of the dishwasher (1), such as a sump (41), are received.

[0126] To this end, the base (90) may be provided with a front wall, a rear wall, a left wall, and a right wall that form the outer boundary surface of the receiving space that becomes the machine room.

[0127] Furthermore, the tub (20) can be directly or indirectly supported through the front wall, rear wall, left wall, and right wall of the base (90).

[0128] Meanwhile, the dishwasher (1) according to the present invention may further include a heat pump system as a means for heating the washing water to be supplied to the tub (20).

[0129] The heat pump system may be provided together with the aforementioned wash water heater, or provided independently without the wash water heater.

[0130] As described below, the heat pump system provided in the dishwasher (1) according to the present invention can be placed in a modular state in the machine room of the base (90).

[0131] In addition, the heat pump system can be modularized and configured to be inserted and removed from the base (90) in batches.

[0132] In consideration of this, the heat pump system provided in the dishwasher (1) according to the present invention shall be referred to as a heat pump module (100).

[0133] The detailed configuration of the heat pump module (100) will be described later with reference to FIG. 4 and below.

[0134] [Schematic Configuration of a Heat Pump System]

[0135] Hereinafter, the detailed configuration of a heat pump module (100) according to an embodiment of the present invention will be described with reference to FIG. 4 and below.

[0136] FIG. 4 is a schematic diagram showing the configuration of a heat pump module (100).

[0137] Referring to FIG. 4, the heat pump module (100) may be configured to include a compressor (110), a condenser (120), an expansion valve (140), and an evaporator (130).

[0138] The compressor (110), condenser (120), expansion valve (140), and evaporator (130) can be sequentially connected through a refrigerant pipe (150), and the refrigerant pipe (150) provides a refrigerant flow path through which the refrigerant can flow.

[0139] For example, the refrigerant piping (150) may be configured to include a first pipe (151) connecting the compressor (110) and the condenser (120), a second pipe (152) connecting the condenser (120) and the expansion valve (140), a third pipe (153) connecting the expansion valve (140) and the evaporator (130), and a fourth pipe (154) connecting the evaporator (130) and the compressor (110).

[0140] The refrigerant can function as a working fluid that absorbs or releases heat while undergoing a phase change from liquid to gas or vice versa as it circulates sequentially through the compressor (110), condenser (120), expansion valve (140), and evaporator (130).

[0141] The compressor (110) compresses the refrigerant and discharges the refrigerant in a high temperature and high pressure state. The refrigerant discharged from the compressor (110) can be introduced into the condenser (120) through the first pipe (151).

[0142] The refrigerant can release heat of QH as it passes through the condenser (120). The heat released from the condenser (120) can be used to heat the wash water to be supplied to the tub (20).

[0143] Accordingly, the condenser (120) may be provided with a flow path through which the refrigerant and the cleaning water each pass. As the refrigerant passes through the condenser (120), it releases heat and undergoes a phase change from a gaseous state to a liquid state, thereby exchanging heat with the cleaning water.

[0144] At this time, the refrigerant that passes through the condenser (120) may be a mixture of liquid and gas with a very low proportion of gas, or a subcooled liquid.

[0145] The refrigerant exiting the condenser (120) can expand as it passes through the expansion valve (140). As a result of the expansion of the refrigerant, the temperature of the refrigerant is lowered, and the refrigerant can become a mixed gas in which gas and liquid are mixed.

[0146] The refrigerant exiting the expansion valve (140) is introduced into the evaporator (130) via the third pipe (153), and as it passes through the evaporator (130), it exchanges heat with the air in the receiving space of the base (90), absorbs QL of heat from the air and evaporates, thereby increasing the proportion of gas in the refrigerant.

[0147] When the refrigerant exits the evaporator (130), it may be a mixed gas with a very low proportion of liquid or a superheated gas.

[0148] The refrigerant coming out of the evaporator (130) passes through the fourth pipe (154) and flows back into the compressor (110), and after being introduced into the compressor (110), it can be compressed and converted into a high-temperature and high-pressure gas.

[0149] In this order, the refrigerant circulates through the heat pump module (100) and undergoes a phase change, and accordingly, the refrigerant can absorb heat in the evaporator (130) and release heat in the condenser (120).

[0150] Meanwhile, in order to increase the heat exchange efficiency in the evaporator (130), it is desirable to allow a large amount of air to flow toward the evaporator (130). To this end, the heat pump module (100) may further be equipped with a blower module (180) that blows air toward the evaporator (130).

[0151] As described below, the blower module (180) may be configured to include, for example, a blower fan that generates airflow and a blower motor that generates rotational driving force for the blower fan.

[0152] Additionally, the blower fan and blower motor can be housed inside the heat exchange duct (170) together with the evaporator (130).

[0153] Meanwhile, as illustrated in FIG. 5, the heat pump module (100) of the dishwasher (1) according to the present invention can be installed and mounted collectively in the machine room of the base (90) in a modularized state separate from the base (90).

[0154] In addition, the heat pump module (100) of the dishwasher (1) according to the present invention can be configured so that it can be removed from the machine room of the base (90) in a modularized state.

[0155] For collective installation and collective removal, the heat pump module (100) may include a module base (160) on which a compressor (110), a condenser (120), an evaporator (130), and an expansion valve (140) are collectively installed.

[0156] The compressor (110), condenser (120), evaporator (130), and expansion valve (140) constituting the heat pump module (100) can be mounted on the base (90) in a state where they are directly or indirectly connected to the module base (160) and directly or indirectly supported by the module base (160).

[0157] Additionally, as described below, the module base (160) can be detachably positioned on the base (90) so as to be largely separated from the bottom surface (91) of the base (90).

[0158] Additionally, the module base (160) can be placed on the base (90) so as to be directly supported in the direction of gravity through the ground.

[0159] Meanwhile, as shown in FIG. 5, at least a sump (41), a washing pump (45), and a water softening device (72) can be accommodated and supported together in the module base (160) along with the compressor (110), condenser (120), and evaporator (130) constituting the heat pump module (100).

[0160] That is, the sump (41), washing pump (45), and water softener (72) are configured to be received and supported on the bottom surface (91) of the conventional base (90).

[0161] However, the present invention may be configured so that a sump (41), a washing pump (45), and a water softening device (72) are accommodated and mounted in the module base (160) of the heat pump module (100).

[0162] Therefore, the module base (160) of the heat pump module (100) can serve the function of the bottom surface (91) of the conventional base (90).

[0163] Figure 5 and below illustrates an embodiment in which the lower part of the sump (41), the lower part of the washing pump (45), and the lower part of the water softening device (72) are each installed on the module base (160).

[0164] However, this is merely illustrative, and other components that were mounted and combined on the bottom surface (91) of the conventional base (90) in addition to the sump (41), washing pump (45) and water softener (72) may be additionally mounted on the module base (160).

[0165] The present invention is not limited thereto, but below it will be described based on an embodiment in which a sump (41), a washing pump (45), and a water softening device (72) are mounted and combined on the module base (160) of a heat pump module (100).

[0166] Meanwhile, the heat pump module (100) of the dishwasher (1) according to the present invention is installed collectively in the machine room of the base (90) and can be removed collectively from the machine room of the base (90) to the outside.

[0167] At this time, as the sump (41), washing pump (45), and water softening device (72) are mounted together on the module base (160), the heat pump module (100) and the sump (41), washing pump (45), and water softening device (72) can be removed from the machine room of the base (90) together.

[0168] To this end, the heat pump module (100) can be configured to be moved in and out collectively in a sliding manner along the horizontal direction through an open side of the base (90).

[0169] As illustrated in FIGS. 3 and 5, a water jacket (71) in which washing water is supplied to and used in the tub (20) during washing and rinsing of dishes may be attached to the outer surface of the right wall (27) of the exemplary tub (20).

[0170] In order to secure sufficient storage capacity, the bottom of the water jacket (71) can extend beyond the lower wall (25) of the tub (20) to the area of ​​the right wall (95) of the base (90).

[0171] At this time, a tub hole (118) may be formed in the water jacket (71) to connect the internal space with the cleaning space (21) of the tub (20).

[0172] A water jacket communication hole (272) may be formed through the right wall (27) of the tub (20) in correspondence with the tub hole (118).

[0173] In order to minimize the inflow of cleaning water and prevent the inflow of foreign matter, a grill cap (118a) similar in shape to the grill cap (813) of the aforementioned air intake hole (271) may be attached to the tub hole (118).

[0174] Additionally, a water softening device (72) for softening the washing water to be supplied to the sump (41) may be installed on the module base (160) below the lower wall (25) of the tub (20) adjacent to the water jacket (71).

[0175] Additionally, as described above, a drying air supply unit (80) may be provided below the lower wall (25) of the tub (20) to heat the air discharged from the tub (20) during the drying process and supply it back to the tub (20).

[0176] Additionally, as illustrated, the dry air supply unit (80) may include an intake duct (81) that sucks in air discharged from the tub (20).

[0177] For example, FIG. 3 illustrates a configuration in which an intake duct (81) is placed alongside a water jacket (71) on the outer surface of the right wall (27) of the tub (20).

[0178] Accordingly, an air intake hole (271) may be formed through the right wall (27) of the tub (20), and a grill cap (8113) that is coupled to the inlet of the intake duct (81) may be fixed to the air intake hole (271).

[0179] Additionally, as illustrated, a main control panel (210) may be placed on the left wall (94) of the base (90).

[0180] More specifically, the main control panel (210) can be positioned on the open left wall (94) of the base (90) in a manner that covers the open portion.

[0181] In addition, to minimize damage caused by leakage, the main control panel (210) may be positioned at a location spaced upward (U-direction) from the bottom surface (91) of the base (90).

[0182] In this way, considering the positional constraints where the drying air supply unit (80), the intake duct (81) of the drying air supply unit (80), the water jacket (71), and the main control panel (210) are arranged, it is preferable that the heat pump module (100) be configured to be inserted and removed at a location that minimizes interference with the drying air supply unit (80), the water jacket (71), and the main control panel (210).

[0183] To this end, the heat pump module (100) can be configured to be inserted and removed along the front-rear direction (FR direction) from an open area of ​​the front wall (92) of the base (90) with the sump (41), washing pump (45), and water softener (72) mounted on the module base (160).

[0184] In particular, when the dishwasher (1) according to the present invention is configured as a built-in type, the dishwasher (1) is blocked by kitchen furniture in the left direction (Le-direction), right direction (Ri-direction), and rear direction (R-direction).

[0185] Therefore, configuring the heat pump module (100) to be pulled forward through the front wall (92) of the base (90) may be particularly suitable for a built-in type dishwasher (1).

[0186] [Modular Structure and Disassembly Process of Heat Pump Modules]

[0187] Hereinafter, with reference to FIGS. 6 to 16, the arrangement structure and array structure of a heat pump module (100) according to an embodiment of the present invention, and the extraction process for collectively removing the heat pump module (100) from a base (90) will be described in detail.

[0188] First, referring to FIG. 6, a heat pump module (100) according to one embodiment may include a compressor (110) that compresses the refrigerant and discharges the refrigerant in a high temperature and high pressure state.

[0189] As described above, the compressor (110) constituting the heat pump module (100) according to one embodiment of the present invention may be an electric compressor in which a compression unit for compressing a refrigerant in a gaseous state and a motor unit for generating a rotational driving force to be braked to the compression unit are integrated.

[0190] At this time, considering the space utilization of the machine room of the base (90), it is necessary to minimize the area occupied by the compressor (110) in the module base (160).

[0191] To this end, the compressor (110) can be placed on the module base (160) in an upright position where the rotation axis is arranged along the up-and-down direction (UD direction).

[0192] A fastening tab (112) in the form of a flange may be provided at the bottom of the compressor body (111) of the compressor (110) so that it can be installed and fixed to the module base (160) in an upright state.

[0193] In the illustrated embodiment, a total of three fastening tabs (112) are provided, and each fastening tab (112) is arranged at equal intervals from each other. However, this is merely an example, and the number of fastening tabs (112) may be set differently depending on the shape and arrangement of the compressor (110).

[0194] Corresponding to the fastening tab (112) of the compressor (110), a fastening boss (not shown) may be integrally provided on the base plate (161) of the module base (160).

[0195] The fastening tab (112) of the compressor (110) can be firmly fastened to the fastening boss of the base plate (161) through a fastening means such as a screw bolt.

[0196] In order to reduce vibration or noise generated in the compressor (110), a bumper having a certain elasticity may be provided between the fastening tab (112) and the fastening boss.

[0197] Additionally, to guide the installation position of the compressor (110) and to supplement the rigidity of the fastening boss, an installation rib (162) may be integrally provided on the bottom surface (1611) of the base plate (161) of the module base (160).

[0198] As described, the installation rib (162) may be provided in the form of a barrier surrounding the fastening tab (112) formed at the bottom of the compressor (110).

[0199] Meanwhile, the compressor (110) can be positioned upright at a location as close as possible to the left edge of the base plate (161) of the module base (160) based on the left-right direction (Le-Ri direction).

[0200] Additionally, as illustrated, the compressor (110) can be positioned as close as possible to the inlet of the heat exchange duct (170) in which the blower module (180) is accommodated.

[0201] Through this, the compressor (110) can be exposed to the airflow flowing into or out of the heat exchange duct (170). Therefore, the airflow flowing into or out of the heat exchange duct (170) can be utilized as a means to cool the compressor (110).

[0202] In addition, the compressor (110) needs to be positioned in a location that minimizes interference with the sump (41) and minimizes the impact of leakage from the sump (41) and the wash pump (45).

[0203] To this end, as shown in FIG. 6, the compressor (110) can be positioned on the rear side of the sump (41) and the wash pump (45).

[0204] Additionally, the compressor (110) can be positioned so as not to overlap with the sump (41) and the wash pump (45) along the vertical direction (UD direction).

[0205] Meanwhile, a heat pump module (100) according to one embodiment of the present invention may include a condenser (120) that performs heat exchange between a refrigerant and a cleaning water.

[0206] For example, the condenser (120) of the heat pump module (100) according to one embodiment of the present invention may be provided in the form of a double pipe in which the flow path of the washing water and the flow path of the refrigerant are formed together inside.

[0207] In order to effectively form a flow path for the washing water and a flow path for the refrigerant inside, the condenser (120) can be configured to have a cylindrical shape.

[0208] Additionally, the cylindrical condenser (120) can be formed with a width in the direction of the central axis that is much larger than its diameter. Through this, the flow path of the cleaning water and the flow path of the refrigerant along the direction of the central axis can be secured to be as long as possible.

[0209] However, in order to increase the heating capacity or heat exchange capacity for the washing water, the volume of the condenser (120) needs to be secured at a level greater than a predetermined level.

[0210] However, in order to be effectively and efficiently placed in the machine room of the base (90) which is subject to height constraints in the vertical direction (UD direction), the condenser (120) can be arranged and installed in the module base (160) such that the horizontal direction (Le-Ri direction) is the longitudinal direction.

[0211] Meanwhile, in detail, the condenser (120) having a cylindrical shape may be composed of a segmented body that is divided along the longitudinal direction, as an example.

[0212] More specifically, the condenser (120) composed of a split body may include a first body (120a) in which an inlet pipe (123) into which washing water to be heated is introduced is formed.

[0213] As illustrated by example, the inlet pipe (123) may be integrally formed on one end of the first body (120a).

[0214] Additionally, the condenser (120) composed of a divided body may include a second body (120b) in which an outlet pipe (124) through which heated washing water is discharged is formed.

[0215] As illustrated by example, the outlet pipe (124) can be integrally formed on one end of the second body (120b).

[0216] Washing water pipes (190) can be connected to the inlet pipe (123) and the outlet pipe (124), respectively.

[0217] For example, one end of the first washing water pipe (191) can be connected to the inlet pipe (123) of the first body (120a).

[0218] The other end of the first washing water pipe (191) can be connected to the inlet or outlet end of the washing pump (45) described above.

[0219] That is, the washing water before being pressurized by the washing pump (45) or the washing water pressurized by the washing pump (45) can be introduced into the condenser (120) through the first washing water pipe (191).

[0220] The present invention is not limited thereto, but below, the invention will be described based on a configuration in which the other end of the first washing water pipe (191) is connected to the outlet end of the washing pump (45), that is, a configuration in which the condenser (120) is connected downstream of the washing pump (45) based on the direction of flow of the washing water.

[0221] As the condenser (120) is connected downstream of the washing pump (45), washing water pressurized by the washing pump (45) can be introduced into the inlet pipe (123) of the first body (120a) through the first washing water pipe (191).

[0222] Additionally, one end of the second washing water pipe (192) can be connected to the outlet pipe (124) of the second body (120b).

[0223] The other end of the second washing water pipe (192) can be connected to the aforementioned supply flow switching valve (465).

[0224] Therefore, heated washing water can be delivered to the spray section through the second washing water pipe (192) via the supply flow switching valve (465).

[0225] Meanwhile, the first washing water pipe (191) and the second washing water pipe (192) can each be configured to have a material and shape that can be extended along the longitudinal direction.

[0226] To this end, the first washing water pipe (191) and the second washing water pipe (192) may be formed of a material having a material that is expandable along the longitudinal direction.

[0227] Alternatively, the first washing water pipe (191) and the second washing water pipe (192) may be formed to have a flexible shape, such as a corrugated pipe.

[0228] Through this, as described below, maintenance and repair of the condenser (120) can be performed by separating only the condenser (120) while the module base (160) is mounted on the base (90).

[0229] That is, the condenser (120) can be effectively removed from the module base (160) without the need to separate the first wash water pipe (191) and the second wash water pipe (192) from the inlet pipe (123) and outlet pipe (124) of the condenser (120) in advance.

[0230] In addition, the outlet pipe (124) and the inlet pipe (123) of the condenser (120) are formed at positions spaced apart as much as possible along the longitudinal direction of the condenser (120), thereby improving the heating efficiency or heat exchange efficiency for the washing water.

[0231] Meanwhile, a condenser refrigerant pipe may be introduced inside the condenser (120) to convert the gaseous refrigerant into a liquid refrigerant.

[0232] For example, the condenser refrigerant tube may be introduced into the interior of the condenser (120) through the outer surface of the third body (120c) of the condenser (120). As illustrated, the third body (120c) may be positioned between the first body (120a) and the second body (120b) and may be detachably connected.

[0233] The condenser refrigerant tube introduced into the interior of the third body (120c) of the condenser (120) may be formed to have a multilayer structure formed by bending multiple times or a coil structure wound multiple times in order to increase the heating efficiency or heat exchange efficiency for the cleaning water.

[0234] Through this, the heat exchange area for the washing water can be expanded, and the flow path of the refrigerant inside the third body (120c) can be secured to be longer.

[0235] Meanwhile, the condenser (120) is configured to be positioned at the very front among the components mounted on the module base (160).

[0236] More specifically, the condenser (120) can be positioned closest to the shear wall (163) of the module base (160).

[0237] Additionally, the condenser (120) can be arranged on the base plate (161) of the module base (160) such that the central axis line is parallel to the extension direction of the shear wall (163) of the module base (160).

[0238] Additionally, the condenser (120) can be positioned in the middle of the left-right direction (Le-Ri direction) of the module base (160) as the front of the sump (41).

[0239] As the lower frame (14) is separated from the shear wall (163) of the module base (160) by being positioned and arranged in the foremost position in this way, it becomes easily accessible to the user.

[0240] Therefore, when repair and replacement are to be performed only on the condenser (120), it is not necessary to remove the entire heat pump module (100) from the base (90), which has the effect of not requiring the entire unit to be removed.

[0241] Meanwhile, a heat pump module (100) according to one embodiment may include an evaporator (130) into which refrigerant that has passed through a condenser (120) is introduced and in which the liquid refrigerant undergoes a phase change to a gaseous state.

[0242] As described above, the evaporator (130) is configured to undergo a phase change while exchanging heat with the air in the machine room of the base (90) or with the outside air.

[0243] Therefore, similar to the condenser refrigerant tube, in order to maximize the heat exchange area for air, the evaporator (130) can be formed into a multi-layer structure formed by bending the evaporator refrigerant tube multiple times.

[0244] Meanwhile, the evaporator refrigerant pipe of the evaporator (130) can be configured to exchange heat with the internal air of the machine room of the base (90) or with external air introduced from the outside of the base (90).

[0245] Figure 6 and below illustrate an exemplary embodiment in which the evaporator refrigerant pipe of the evaporator (130) is configured to exchange heat with the internal air of the machine room of the base (90).

[0246] The present invention is not limited thereto, but is described based on a configuration in which the internal air of the machine room of the base (90) is exhausted to the outside after heat exchange with the evaporator refrigerant pipe of the evaporator (130).

[0247] Meanwhile, when the evaporator refrigerant pipe of the evaporator (130) exchanges heat with the internal air of the base (90), a flow path needs to be formed so that the heat-exchanged air is discharged to the outside.

[0248] As described, the evaporator refrigerant pipe of the evaporator (130) can be positioned as close as possible to the rear wall (93) of the base (90). This allows the internal air of the base (90) to be exhausted to the outside of the base (90) via the shortest path through the evaporator refrigerant pipe of the evaporator (130).

[0249] Meanwhile, the evaporator refrigerant pipe of the evaporator (130) can be accommodated inside the duct body (171) of the heat exchange duct (170) which forms the heat exchange path and the exhaust path. Through this, the heat exchange efficiency of the evaporator (130) with respect to the internal air of the base (90) can be maximized.

[0250] Therefore, the duct body (171) of the heat exchange duct (170) can be positioned as close as possible to the rear wall (93) of the base (90) with the evaporator refrigerant pipe contained inside.

[0251] Preferably, the heat exchange duct (170) can be placed on the module base (160) so that the rear surface of the duct body (171) is in close contact with the rear wall (93) of the base (90) as much as possible.

[0252] Meanwhile, corresponding to the duct body (171), the internal air of the base (90) that has undergone heat exchange while passing through the duct body (171) needs to be smoothly exhausted to the outside of the base (90).

[0253] To this end, the rear wall (93) of the base (90) may be provided with an exhaust port in the form of a grille.

[0254] Additionally, although not shown, a pair of column sections supporting the load of the tub (20) may be integrally formed on the rear wall (93) of the base (90). To prevent a decrease in strength, it becomes difficult to form an exhaust port at the location where the pair of column sections are formed.

[0255] Accordingly, the exhaust port of the duct body (171) and the base (90) of the heat exchange duct (170) can be positioned and formed in a location avoiding a pair of pillars.

[0256] Preferably, the duct body (171) of the heat exchange duct (170) is positioned in the area between a pair of pillars based on the left-right direction (Le-Ri direction), and an exhaust port may be formed immediately behind the duct body (171).

[0257] To distribute the load of the tub (20), a pair of column sections can be formed at positions symmetrical with respect to a centerline that divides the base (90) along the left-right direction (Le-Ri direction).

[0258] Accordingly, the duct body (171) of the heat exchange duct (170) and the exhaust port of the base (90) can be positioned at a location approximately in the center of the rear wall (93) of the base (90) with respect to the left-right direction (Le-Ri direction).

[0259] Meanwhile, with respect to the sump (41) and the washing pump (45), the duct body (171) of the heat exchange duct (170) can be positioned at a location immediately behind the sump (41).

[0260] Meanwhile, similar to the aforementioned condenser (120) and compressor (110), the heat exchange duct (170) and evaporator (130) can be modularized and arranged on the module base (160).

[0261] To this end, the duct body (171) can be detachably mounted on the base plate (161) of the module base (160) with the evaporator refrigerant pipe of the evaporator (130) accommodated inside the duct body (171).

[0262] Similar to the compressor (110), for a detachable connection to the duct body (171) of the heat exchange duct (170), the base plate (161) may be integrally provided with a connection boss (not shown) to which the duct body (171) is connected, which guides the connection position of the duct body (171).

[0263] Additionally, an installation rib (162) may be integrally provided on the bottom surface (1611) of the base plate (161) of the module base (160) to guide the installation position of the duct body (171) and to increase the bonding strength to the duct body (171).

[0264] Meanwhile, a blower module (180) that generates a forced airflow for internal air to be heat-exchanged with the evaporator refrigerant pipe of the evaporator (130) may be placed inside the duct body (171).

[0265] At this time, in order to minimize the increase in volume of the heat exchange duct (170) and increase space utilization, the blower module (180) may be configured to include a single blower fan and a single blower motor.

[0266] Examples are illustrated in FIG. 6 and below in which the blower fan is configured as an axial fan that generates an axial airflow. However, this is merely illustrative, and blower fans of different types may be applied depending on the design conditions of the duct body (171). For example, a Sirocco fan may be optionally applied.

[0267] Meanwhile, due to the constraints on the vertical (UD direction) and horizontal (Le-Ri direction) sizes in which the blower module (180) is installed, the blower fan constituting the blower module (180) can be set to have a diameter smaller than the horizontal (Le-Ri direction) width and vertical (UD direction) width of the evaporator (130).

[0268] Therefore, the cross-sectional area of ​​the portion of the heat exchange duct (170) in which the blower module (180) is accommodated can be formed to be smaller than the cross-sectional area of ​​the portion in which the evaporator refrigerant pipe is accommodated.

[0269] In addition, it is necessary to minimize flow resistance and flow loss for the airflow of internal air passing through the duct body (171) of the heat exchange duct (170).

[0270] To this end, the portion of the heat exchange duct (170) in which the blower module (180) is accommodated may be configured to have a shape in which the cross-sectional area gradually expands as it progresses from the front to the rear.

[0271] Meanwhile, the duct body (171) of the heat exchange duct (170) can be configured so that the upper surface is completely open.

[0272] The heat exchange duct (170) may further include a duct cover (172) that serves to close the open top surface of the duct body (171).

[0273] As described, the duct cover (172) can be configured to collectively close the upper surface of the portion in which the blower module (180) is accommodated and the upper surface of the portion in which the evaporator refrigerant pipe is accommodated.

[0274] Additionally, the duct cover (172) can be detachably connected to the duct body (171).

[0275] Therefore, for maintenance and repair, the heat pump module (100) is removed from the base (90) and pulled out from the open front wall (92) of the base (90), and then the duct cover (172) can be independently separated from the duct body (171) without separating the entire duct body (171) from the module base (160).

[0276] Therefore, even without the process of separating or disassembling the duct body (171), a state can be formed where the evaporator refrigerant pipe and the blower module (180) housed inside the duct body (171) can be repaired or replaced by separating only the duct cover (172) from the duct body (171).

[0277] Accordingly, the convenience of maintenance for the evaporator (130) and the blower module (180) can be improved.

[0278] Meanwhile, a heat pump module (100) according to one embodiment of the present invention may include an expansion valve (140) disposed between a second pipe (152) and a third pipe (153).

[0279] In the illustrated embodiment, the expansion valve (140) can be positioned so that interference with the aforementioned compressor (110) and condenser (120) can be minimized.

[0280] For example, the expansion valve (140) may be positioned in the space between the compressor (110) and the condenser (120) with respect to the front-rear direction (FR direction), connected to the second pipe (152) and the third pipe (153), respectively.

[0281] Meanwhile, a heat pump module (100) according to one embodiment of the present invention may include a module base (160) on which the aforementioned compressor (110), condenser (120), evaporator (130), and refrigerant piping (150) are installed and mounted collectively.

[0282] More specifically, the module base (160) may include a plate-shaped base plate (161).

[0283] In one embodiment of the present invention, a compressor (110), a condenser (120), and an evaporator (130) may be mounted collectively on the upper surface of a base plate (161), and the compressor (110), condenser (120), and evaporator (130) may be supported collectively.

[0284] As described above, a plurality of fastening bosses and mounting ribs (162) may be integrally formed on the upper surface of the base plate (161) so that the compressor (110), condenser (120), and evaporator (130) can each be individually fastened and supported.

[0285] However, considering the machine room of the base (90) which is subject to height restrictions in the vertical direction (UD direction), the thickness of the base plate (161) can be formed to be approximately constant overall.

[0286] However, as described below, the heat pump module (100) is configured such that the compressor (110), condenser (120), and evaporator (130), etc., are fixed collectively to the module base (160) and are collectively inserted and removed from the base (90) along the front-rear direction (FR direction).

[0287] Therefore, in order to prevent damage during the insertion and removal process and to secure a certain degree of rigidity, a reinforcing rib (1612) extending along the left-right direction (Le-Ri direction) and the front-back direction (FR direction) may be integrally provided on the bottom surface (1611) of the base plate (161).

[0288] Additionally, among the outer edges of the base plate (161), the left side edge, the right side edge, and the rear edge may be integrally provided with a barrier-shaped border wall (1613) that protrudes upward (U-direction).

[0289] Meanwhile, as shown in FIG. 6, in addition to the compressor (110), condenser (120) and evaporator (130), the base plate (161) may be equipped with a sump (41), a water softener (72), and a washing pump (45).

[0290] For example, the wash pump (45) and the sump (41) may be positioned on the base plate (161) such that they partially overlap each other when viewed from the upper direction (U-direction).

[0291] More specifically, the sump body (411) constituting the upper part of the washing pump (45) and the sump (41) can be positioned on the base plate (161) such that partial overlap occurs when viewed from the upper direction (U-direction).

[0292] Additionally, the lower part of the collection section (412) of the sump (41) where the washing water is stored may be supported by or come into contact with the base plate (161).

[0293] At this time, the sump body (411) connected to the top of the collection unit (412) can be detachably connected to the lower wall (25) of the tub (20).

[0294] More specifically, as described below, a sump body (411) can be coupled to a first coupling groove (256) that is formed concavely from the lower wall (25) of the tub (20) toward the lower direction (D-direction).

[0295] At this time, the valve coupling part (413) formed protruding upward (U-direction) inside the sump body (411) can be inserted into the sump hole (252) formed in the first coupling groove (256).

[0296] Although not shown, the aforementioned supply flow switching valve (465) may be coupled to the valve coupling part (413).

[0297] In this way, as the sump body (411) is coupled to the first coupling groove (256) and the valve coupling part (413) is inserted into the sump hole (252), the separation process between the sump body (411) and the first coupling groove (256) and the separation process between the valve coupling part (413) and the sump hole (252) can be performed before the collective removal of the heat pump module (100) proceeds as described below.

[0298] To this end, as described below, the water collection portion (412) constituting the lower part of the sump (41) can be supported on the base plate (161) of the module base (160) so as to be movable relative to the base plate (161) along the vertical direction (UD direction).

[0299] Additionally, as illustrated, a water softening device (72) may be placed to the right of the sump (41).

[0300] More specifically, the water softening device (72) may include a tank body (721) in which a regenerating agent and an ion exchange resin are contained.

[0301] Additionally, the water softening device (72) may include a tank base (723) that is coupled to the lower part of the tank body (721).

[0302] Additionally, the water softening device (72) may include a tank cover (722) that is coupled to the upper part of the tank body (721).

[0303] At this time, as illustrated, the tank base (723) of the water softening device (72) can be detachably coupled to the base plate (161).

[0304] Additionally, a connecting duct (724) for additional injection of a regenerating agent may be integrally formed in the tank cover (722).

[0305] A male screw portion (7241) may be formed on the upper outer surface of the connecting duct (724).

[0306] The male threaded portion (7241) of the connecting duct (724) can pass through the water softener connection hole (255) of the aforementioned tub (20) and be exposed to the interior of the washing space (21).

[0307] An input cap (7225) can be screw-coupled to the male screw portion (7241).

[0308] As the input cap (7225) is fastened to the male threaded portion (7241) of the connecting duct (724), the connecting duct (724) can be connected to the lower wall (25) of the tub (20).

[0309] Additionally, a port portion (725) for receiving, recovering, and discharging washing water may be integrally formed in the tank cover (722).

[0310] More specifically, the port section (725) may include an inlet port (7221), a recovery port (7222), and an outlet port (7223).

[0311] The inlet port (7221), the recovery port (7222), and the outlet port (7223) constituting the port section (725) can each be detachably connected to the connecting part (715) of the aforementioned water jacket (71).

[0312] As the connecting part (715) of the water jacket (71) is inserted into the inlet port (7221), the recovery port (7222), and the outlet port (7223), respectively, the water jacket (71) and the tank body (721) can be connected.

[0313] At this time, the inlet port (7221), the recovery port (7222), and the outlet port (7223) are configured to be connected to and separated from the connection part (715) of the water jacket (71) in a collective manner.

[0314] To this end, the inlet port (7221), the recovery port (7222), and the outlet port (7223) may each have the same height and be formed to protrude toward the connection part (715).

[0315] In this way, as the inlet cap (7225) is fastened to the male threaded portion (7241) of the connecting duct (724), the connecting duct (724) is connected to the lower wall (25) of the tub (20), and the port portion (725) is connected to the connecting portion (715) of the water jacket (71), the separation process between the connecting duct (724) and the inlet cap (7225), the separation process between the connecting duct (724) and the lower wall (25) of the tub (20), and the separation process between the port portion (725) and the connecting portion (715) of the water jacket (71) can be performed prior to the collective removal of the heat pump module (100) as described below.

[0316] To this end, as described below, the tank base (723) constituting the lower part of the water softening device (72) can be coupled to the base plate (161) of the module base (160) so as to be movable relative to the base plate (161) along the vertical direction (UD direction).

[0317] The process of relative movement in the vertical direction (UD direction) of the sump (41) and the water softener (72) for collective removal and collective withdrawal will be described later with reference to FIGS. 10 to 15.

[0318] In this way, a sump (41), a water softener (72), and a washing pump (45), having a relatively large volume compared to the components of the heat pump module (100), are mounted collectively on the base plate (161) of the module base (160) together with the components of the heat pump module (100).

[0319] Accordingly, the base plate (161) of the module base (160) can be configured to have an area corresponding to the bottom surface (91) of the conventional base (90).

[0320] In addition, considering the total weight of the components mounted on the base plate (161) of the module base (160), it is desirable that the module base (160) not be directly supported on the bottom surface (91) of the base (90) while mounted on the base (90).

[0321] To this end, as described below, the module base (160) can be configured to be directly supported on the ground.

[0322] Additionally, in order for the module base (160) to be supported by the ground while the module base (160) is mounted on the base (90), the bottom surface (91) of the base (90) may be removed at a corresponding position of the module base (160) to form an open area.

[0323] Additionally, as shown in FIG. 6, the base plate (161) of the module base (160) may have an asymmetrical shape with respect to the left-right direction (Le-Ri direction).

[0324] Accordingly, the bottom surface (91) of the base (90) may be formed in an asymmetrical shape with respect to the left-right direction (Le-Ri direction) in an area where there is no overlap with the module base (160).

[0325] Through the asymmetrical shape of the base plate (161) as described above, misassembly can be prevented when the module base (160) is mounted on the base (90).

[0326] Meanwhile, the module base (160) may include a shear wall (163) formed integrally on the shear edge of the base plate (161).

[0327] As described, the shear wall (163) may be provided in the form of a barrier that extends linearly along the left-right direction (Le-Ri direction) and protrudes upward (U-direction) along the shear edge of the base plate (161).

[0328] In this way, as the shear wall (163) is integrally formed on the shear edge of the base plate (161), the rigidity of the shear edge side of the base plate (161) can be reinforced.

[0329] Additionally, the shear wall (163) can serve as a grip portion that acts as a handle that can be grasped by a user when removing or mounting the heat pump module (100) in bulk.

[0330] In order to prevent damage caused by gripping during mass removal and mass installation, the shear wall (163) can be formed as a double wall structure.

[0331] As described below, the lower edge of the lower frame (14) is configured to be inserted into the interior of the double-wall structure. Therefore, the shear wall (163) of the module base (160) can serve to support and fix the lower end of the lower frame (14).

[0332] Meanwhile, the width in the front-rear direction (FR direction) at the left and right ends of the shear wall (163) can be formed to be larger than the width in the front-rear direction (FR direction) at the intermediate position between the left and right ends.

[0333] Additionally, as described below, the front-rear direction (FR direction) width of the shear wall (163) at the left and right ends can be set to be greater than or equal to the front-rear direction (FR direction) width of the front wall (92) of the base (90).

[0334] As described below, when the module base (160) is mounted on the base (90), the left and right ends of the shear wall (163) can be combined with the front wall (92) of the base (90).

[0335] As the front-rear direction (FR direction) width of the left and right ends of the shear wall (163) is formed to be greater than the front-rear direction (FR direction) width of the front wall (92) of the base (90), the horizontal movement direction of the module base (160) can be effectively guided by the shear wall (163) of the module base (160) and the front wall (92) of the base (90).

[0336] Additionally, by the combination of the shear wall (163) of the module base (160) and the front wall (92) of the base (90), relative movement of the module base (160) along the left-right direction (Le-Ri direction) and the up-down direction (UD direction) can be prevented while the heat pump module (100) is mounted on the base (90).

[0337] Therefore, the shear wall (163) of the module base (160) and the front wall (92) of the base (90) can function as a stopper that prevents relative movement of the heat pump module (100).

[0338] The relative movement prevention structure of the module base (160) will be described later with reference to FIG. 16.

[0339] Hereinafter, the process of removing or disassembling the heat pump module (100) according to one embodiment from the base (90) will be described.

[0340] For the convenience of explanation and as an example, Figure 7 and below shows a state in which the door (30) and case (10) have been removed from the tub (20) and base (90).

[0341] The following description can be applied with only the door (30) and the front panel (15) separated from the tub (20) and the base (90), without separating the upper panel (11), the left side panel (12), and the right side panel (13) that constitute the case (10).

[0342] Referring to FIGS. 7 and 8, the process of separating the lower frame (14) from the tub (20) and base (90) can be carried out first.

[0343] As described, the lower frame (14) serves to cover the open portion of the front wall (92) of the base (90) and the open area between the tub (20) and the base (90).

[0344] As described, the upper part of the lower frame (14) is detachably connected to the lower surface of the front part of the lower wall (25) of the tub (20).

[0345] In addition, the lower part of the lower frame (14) is detachably connected to the shear wall (163) of the module base (160).

[0346] In particular, as described above, the lower part of the lower frame (14) can be combined with the module base (160) in a state where it is simply inserted into the shear wall (163) having a double wall structure.

[0347] In addition, the middle part of the lower frame (14) can be fastened to the front wall (92) of the base (90) through screw bolts, etc.

[0348] Therefore, by separating the upper part of the lower frame (14) from the tub (20), separating the middle part of the lower frame (14) from the front wall (92) of the base (90), and separating the lower part of the lower frame (14) from the front wall (163) of the module base (160), the lower frame (14) can be removed from the tub (20) and the base (90) as shown in FIG. 8.

[0349] When the lower frame (14) is separated from the tub (20) and the base (90), the open area of ​​the front wall (92) of the base (90) can be exposed to the outside.

[0350] Additionally, a state can be formed in which observation and access to the heat pump module (100) housed in the internal space of the base (90) is possible through the open area of ​​the front wall (92).

[0351] In particular, as shown in FIG. 8, the condenser (120) is configured to be positioned at the forefront among the components placed on the module base (160).

[0352] That is, the condenser (120) is positioned immediately behind the front wall (163) of the module base (160).

[0353] Additionally, the condenser (120) is arranged so that the extension direction of the central axis is approximately the same as the extension direction of the shear wall (163).

[0354] Therefore, at least among the heat pump modules (100), the condenser (120) is positioned and arranged in a location accessible to the user by only separating the lower frame (14) without performing the process of removing the module base (160).

[0355] Furthermore, as shown in FIG. 11, the upper edge of the shear wall (163) of the module base (160) can be configured to be formed at a lower position relative to the vertical direction (UD direction) than the central axis of the condenser (120).

[0356] Therefore, when viewed from the front with the lower frame (14) removed, a state can be formed in which the condenser (120) is partially obscured by the shear wall (163) of the module base (160).

[0357] More specifically, the area of ​​the portion where the condenser (120) is covered by the shear wall (163) of the module base (160) can be formed to be smaller than the area of ​​the portion where the condenser (120) is not covered by the shear wall (163) of the module base (160).

[0358] Therefore, the repair and replacement of the condenser (120) can be easily performed without separate operation on other components placed on the module base (160).

[0359] Meanwhile, although not illustrated, a condenser supporter may be disposed between the condenser (120) and the base plate (161) of the module base (160) to support the condenser (120) at a position spaced upward (U-direction) from the base plate (161).

[0360] Therefore, although not illustrated, when removing the condenser (120) for repair and replacement, a process of separating the condenser supporter from the condenser (120) and the base plate (161) may be performed first.

[0361] However, if repair and replacement are to be performed on components of the heat pump module (100) other than the condenser (120), a process of pulling out the module base (160) in a sliding manner toward the front is required.

[0362] However, as described above, among the components mounted on the module base (160), the sump (41) is configured such that the sump body (411) is connected to the lower wall (25) of the tub (20).

[0363] Additionally, a wash water filter module (47) for filtering out foreign substances, such as food waste, contained in the wash water flowing into the sump (41) may be combined with the sump (41).

[0364] As illustrated in FIG. 9, similar to the conventional method, the washing water filter module (47) may include a handle body part (471) that functions as a grip part held by a user, a plate-shaped screen filter part (472) disposed on the side of the sump (41), and a mesh filter part (473) disposed inside the sump (41).

[0365] In particular, since the bottom of the mesh filter section (473) is configured to be fixed to the bottom inner surface of the water collection section (412) of the sump (41), the separation of the mesh filter section (473) must be performed first in order to move the sump (41) in the forward and backward direction (FR direction).

[0366] Similar to the conventional method, the handle body part (471), screen filter part (472), and mesh filter part (473) are combined with each other and connected to the lower wall (25) and sump (41) of the tub (20).

[0367] Therefore, as shown in FIG. 9, if the handle body part (471) is grasped and moved relative to the upper direction (U-direction), it can be removed collectively from the tub (20) and sump (41).

[0368] Meanwhile, as described above, the valve coupling part (413) constituting the sump (41) is coupled to the supply flow switching valve (465), and the supply flow switching valve (465) is coupled to the sump cover (42).

[0369] Therefore, after removing the wash water filter module (47), the supply flow switching valve (465) and the sump cover (42) can be removed.

[0370] In addition, as described above, among the components mounted on the module base (160), the water softening device (72) is configured such that the connecting duct (724) is connected to the lower wall (25) of the tub (20) through the inlet cap (7225).

[0371] Therefore, in order to move the water softening device (72) in the forward and backward direction (FR direction), the process of separating the inlet cap (7225) from the connecting duct (724) as shown in FIG. 9 must be performed first.

[0372] FIGS. 10 and 11 show the state in which the wash water filter module (47) and the supply flow switching valve (465) are removed from the sump (41) and the inlet cap (7225) is separated from the sump body (411) through these processes.

[0373] However, as described above, even if the wash water filter module (47) and the supply flow switching valve (465) are removed from the sump (41) and the inlet cap (7225) is separated from the sump body (411), a state is not formed in which the heat pump module (100) can be immediately withdrawn in bulk.

[0374] More specifically, as shown in FIGS. 10 and 11, the sump body (411) of the sump (41) is coupled with a first coupling groove (256) and a second coupling groove (257) inserted inside.

[0375] As described, a sump hole (252) into which a valve coupling part (413) is inserted and coupled is formed through the first coupling groove (256) along the vertical direction (UD direction).

[0376] Additionally, the second coupling groove (257) is additionally formed by being concavely recessed downward (D-direction) from the first coupling groove (256).

[0377] Accordingly, due to the insertion connection between the sump body (411) and the second coupling groove (257) and the insertion connection between the valve coupling part (413) and the sump hole (252), the sump (41) becomes unable to move horizontally relative to the tub (20).

[0378] Additionally, the connecting duct (724) of the water softener (72) is connected to the tub (20) with the male threaded portion (7241) passing through the water softener connection hole (255) and protruding upward (U-direction).

[0379] In addition, the water softening device (72) and the water jacket (71) are connected with the connection part (715) of the water jacket (71) inserted into the port part (725) of the water softening device (72).

[0380] Accordingly, due to the insertion and connection of the connecting duct (724) of the water softening device (72) and the insertion and connection of the connecting part (715), the water softening device (72) becomes unable to move horizontally relative to the tub (20).

[0381] The dishwasher (1) according to the present invention may include means to resolve the condition of being unable to move horizontally in the horizontal direction due to a jamming caused by insertion coupling.

[0382] More specifically, the sump (41) and the water softening device (72) can be configured to be supported on the base plate (161) of the module base (160) such that relative movement in the horizontal direction is not possible, but relative movement in the vertical direction (UD direction) is possible.

[0383] For example, the lower portion of the collection section (412) of the sump (41) may be supported in a simple fit or contact state rather than a forced fit to the installation rib (162) of the base plate (161).

[0384] Additionally, for example, the lower part of the tank base (723) of the water softening device (72) can be supported by a simple fit rather than a forced fit to the installation rib (162) of the base plate (161).

[0385] Accordingly, the sump (41) and the water softening device (72) can be supported in a state where they cannot move relative to each other due to their own weight, but can move downward (D-direction) when a load greater than their own weight is applied.

[0386] Therefore, when a load slightly greater than the self-weight is applied to the sump (41) and the water softening device (72) respectively toward the downward direction (D-direction), they can be easily moved toward the downward direction (D-direction).

[0387] At this time, the relative movement amount in the lower direction (D-direction) of the sump (41) and the water softener (72) can be set differently.

[0388] For example, the relative movement amount in the vertical direction (UD direction) of the sump (41) can be defined as the movement amount that forms a state in which the upper part of the sump body (411) and the upper part of the valve coupling part (413) of the sump (41) are completely detached from the sump hole (252) in the downward direction (D-direction).

[0389] Additionally, for example, the relative movement amount in the vertical direction (UD direction) of the water softening device (72) can be defined as a movement amount that forms a state in which the male threaded portion (7241) of the connecting duct (724) is completely detached from the water softener communication hole (255) in the downward direction (D-direction) and the connecting portion (715) of the water jacket (71) is completely detached from the port portion (725) of the water softening device (72).

[0390] Accordingly, as illustrated in FIGS. 12 to 15, when a user applies a load slightly greater than the user's own weight to the sump (41) in the downward direction (D-direction), the upper end of the sump body (411) and the upper end of the valve coupling part (413) of the sump (41) can be completely detached from the sump hole (252).

[0391] As described above, the sump body (411) constituting the upper part of the washing pump (45) and the sump (41) is positioned on the base plate (161) such that partial overlap occurs when viewed from the upper direction (U-direction).

[0392] Accordingly, the sump body (411) of the sump (41) is positioned so that it does not come into direct contact with the washing pump (45) before the upper part of the sump body (411) is completely separated from the sump hole (252), but after the sump body (411) is separated from the sump hole (252), a structure can be formed in which the sump (41) can be stably supported by the washing pump (45).

[0393] Likewise, when the user applies a load slightly greater than the self-weight to the water softening device (72) in the downward direction (D-direction), the male threaded portion (7241) of the connecting duct (724) can be completely detached from the water softener communication hole (255), and the connecting portion (715) of the water jacket (71) can be completely detached from the port portion (725).

[0394] In this way, when the sump (41) and the water softener (72) are each completely detached from the tub (20) and the water softener (72) is completely detached from the water jacket (71), if a force is applied to simply pull the shear wall (163) of the module base (160) forward, the heat pump module (100) can be collectively pulled forward and removed from the machine room of the base (90) while the sump (41), water softener (72), and washing pump (45) are mounted on the module base (160) as shown in FIG. 16.

[0395] However, although separated from the lower wall (25) of the tub (20), the upper end of the sump body (411) and the upper end of the valve coupling part (413) constituting the uppermost part of the sump (41) are in a state of being very close to the lower wall (25) of the tub (20) in the vertical direction (UD direction).

[0396] Additionally, although separated from the lower wall (25) of the tub (20), the upper end of the connecting duct (724) constituting the uppermost part of the water softening device (72) is in a state where it is very close to the lower wall (25) of the tub (20) in the vertical direction (UD direction).

[0397] The shape of the front wall (92) of the base (90) can be set by considering the uppermost position of the sump (41) and the uppermost position of the water softening device (72) in the vertical direction (UD direction).

[0398] For example, as illustrated in FIG. 16, in order to prevent collision and interference with the uppermost part of the sump (41) and the uppermost part of the water softening device (72), the front side of the base (90) may have an open area formed along the vertical direction (UD direction) from the ground to the lower wall (25) of the tub (20).

[0399] Such an open area can be formed continuously up to the rear wall (93) of the base (90).

[0400] At this time, the front wall (92) of the base (90) may not be entirely open but may have a partially open shape. For example, the front wall (92) of the base (90) may be formed on the left end side and the right end side of the front surface of the base (90) with the middle part omitted.

[0401] In addition, when viewed from the front, the front wall (92) formed on the left end side can be provided in an L-shape.

[0402] In addition, when viewed from the front, the front wall (92) formed on the right end side can be provided in a reversed L-shape.

[0403] In addition, when viewed from the front, the front wall (92) formed on the left end and the front wall (92) formed on the right end may have mutually symmetrical shapes.

[0404] Additionally, the front wall (92) formed on the left end and the front wall (92) formed on the right end may have a front-rear direction (FR direction) width that is the same as or slightly smaller than the front-rear direction (FR direction) width of the left end and right end of the shear wall (163) as described above.

[0405] Accordingly, a slot may be formed between the front wall (92) formed on the left end side and the front wall (92) formed on the right end side through which the base plate (161) and the front wall (163) of the module base (160) pass.

[0406] As the front wall (92) of the base (90) is configured to have such a shape, the sliding movement of the module base (160) in the front-rear direction (FR direction) can be effectively guided when the module base (160) is pulled forward.

[0407] Additionally, when the module base (160) is moved in toward the rear for mounting into the machine room of the base (90), the left and right ends of the front wall (163) of the base (90) can be combined with the front wall (92) of the base (90).

[0408] Accordingly, by the combination of the shear wall (163) of the module base (160) and the front wall (92) of the base (90), relative movement of the module base (160) along the left-right direction (Le-Ri direction) and the up-down direction (UD direction) can be prevented while the heat pump module (100) is mounted on the base (90).

[0409] In addition, the shear wall (163) of the module base (160) and the front wall (92) of the base (90) can function as a stopper that prevents relative movement of the heat pump module (100).

[0410] Although the present invention has been described above with reference to the illustrated drawings, the present invention is not limited by the embodiments and drawings disclosed in this specification, and it is obvious that various modifications can be made by a person skilled in the art within the scope of the technical concept of the present invention. Furthermore, even if the effects of the configuration according to the present invention were not explicitly described while describing the embodiments of the present invention above, it is natural to acknowledge that the effects predictable by said configuration should also be recognized. Explanation of the symbols

[0412] 1: Dishwasher 30: Door 20: Tub 90: Bass 100: Heat pump module

Claims

Claim 1 A dishwasher comprising: a tub forming a washing space and accommodating dishes; a base forming a machine room and positioned below the tub; a sump positioned below the tub and storing washing water to be supplied to the tub; and a heat pump module positioned in the machine room and heating the washing water supplied to the sump; wherein the heat pump module is coupled to the base so as to be removable along the front-rear direction from the base. Claim 2 In claim 1, the heat pump module is a dishwasher that is withdrawn from or inserted into the base while sliding along the front and rear directions. Claim 3 In claim 1, the heat pump module comprises: a compressor for compressing a refrigerant; a condenser into which the refrigerant passing through the compressor is introduced and which heats the washing water to be supplied to the tub; an evaporator into which the refrigerant passing through the condenser is introduced; and a module base on which the compressor, the condenser and the evaporator are mounted; and the module base is a dishwasher that is removable and disposed on the base. Claim 4 A dishwasher according to claim 3, wherein the upper portion of the sump is coupled to the lower wall of the tub, and the lower portion of the sump is positioned on the module base so as to be movable relative to the module base along the vertical direction. Claim 5 In claim 4, the sump is a dishwasher that is collectively drawn from the base and introduced into the base while mounted on the module base together with the compressor, the condenser, and the evaporator. Claim 6 In claim 5, the sump is moved relative downward before being drawn out collectively from the base in a dishwasher. Claim 7 A dishwasher according to claim 5, further comprising a washing pump that pressurizes washing water stored in the sump and supplies it to the tub; wherein the washing pump and the upper portion of the sump are positioned on the module base such that they partially overlap each other when viewed from the upper direction, and the upper portion of the sump is separated from the lower wall of the tub before being collectively withdrawn from the base. Claim 8 In claim 3, the dishwasher further comprises a water softening device for softening the washing water to be supplied to the sump; wherein the water softening device is coupled to the module base so as to be movable relative to the module base along the vertical direction. Claim 9 In claim 8, the water softening device is a dishwasher that is collectively withdrawn from the base and introduced into the base while mounted on the module base together with the compressor, the condenser, and the evaporator. Claim 10 In claim 9, the water softening device is a dishwasher that moves relative downward before being collectively withdrawn from the base. Claim 11 In claim 9, the dishwasher further comprises a water jacket storing washing water to be supplied to the water softening device; wherein the water softening device is separated from the water jacket before being drawn out collectively from the base. Claim 12 In paragraph 3, the condenser is a dishwasher positioned in front of the sump. Claim 13 In claim 12, the condenser is arranged on the module base such that the left-right direction is the longitudinal direction of the dishwasher. Claim 14 In claim 12, the module base comprises: a base plate providing an installation area in which the compressor, the condenser, and the evaporator are mounted; and a shear wall coupled to the front end of the base plate and formed to protrude upward from the base plate; and a dishwasher in which the condenser is partially obscured by the shear wall when viewed from the front. Claim 15 A dishwasher according to claim 14, wherein the area of ​​the portion where the condenser is covered by the shear wall is smaller than the area of ​​the portion where the condenser is not covered by the shear wall. Claim 16 In paragraph 3, the heat pump module is a dishwasher that passes through the front wall of the base and is introduced into the interior of the base. Claim 17 In claim 14, the module base comprises: a base plate providing an installation area in which the compressor, the condenser, and the evaporator are mounted; and a shear wall coupled to the front end of the base plate and formed to protrude upward from the base plate; and when the heat pump module is inserted into the interior of the base and mounted on the base, the shear wall is coupled to the front wall of the base. Claim 18 A dishwasher according to claim 15, wherein when the heat pump module is mounted on the base, the left-right movement of the front wall is prevented by the front wall of the base. Claim 19 A dishwasher according to claim 15, wherein when the heat pump module is mounted on the base, the upward movement of the shear wall is prevented by the front wall of the base. Claim 20 A dishwasher according to claim 15, wherein, during the process in which the heat pump module is introduced into the interior of the base, the forward and backward movement of the front wall is guided by the front wall of the base.

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