Dish washer

Abstract

The present invention relates to a dishwasher capable of preventing the deterioration of the operating efficiency of a heat pump module that may occur when air cooled through heat exchange with the evaporator is recirculated into the evaporator, by configuring the evaporator constituting the heat pump system to be placed inside a heat exchange duct forming a heat exchange path, and the air cooled through heat exchange with the evaporator to be exhausted to the outside of the base rather than being discharged into the receiving space between the tub and the base.

Description

Technology Field

[0001] The present invention relates to a dishwasher, and more specifically, to a dishwasher in which an evaporator constituting a heat pump system is positioned inside a heat exchange duct forming a heat exchange path, and air cooled while exchanging heat with the evaporator is configured to be exhausted to the outside of the base rather than being discharged into the receiving space between the tub and the base, thereby preventing the deterioration of the operating efficiency of a heat pump module that may occur when air cooled while exchanging heat with the evaporator is recirculated into the evaporator. Background Technology

[0002] 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.

[0003] 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.

[0004] 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.

[0005] 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.

[0006] Meanwhile, dishwashers equipped with heat pump devices instead of electric heaters as an alternative heating method are emerging.

[0007] 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.

[0008] 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

[0009] Chinese Patent Publication No. 118806186 The problem to be solved

[0010] However, the dishwasher disclosed in the aforementioned prior art document 001 is configured such that the evaporator constituting the heat pump device is placed on the bottom surface of the base in a state where it is entirely exposed to the receiving space of the base.

[0011] Therefore, as the air cooled through heat exchange with the evaporator constituting the heat pump device of prior art 001 is recirculated to the blower fan, there is a concern that the heat exchange efficiency of the evaporator may deteriorate, and consequently, a problem may arise in which the overall operating efficiency of the heat pump device deteriorates.

[0012] In addition, therefore, air that is cooled by heat exchange with the evaporator constituting the heat pump device of prior art 001 flows toward the sump, washing pump, and tub, and there is a possibility that it may cool them at least partially. Consequently, there is a concern that the washing water temperature and the tub temperature may drop below an appropriate level during the washing and heating rinse cycles, thereby deteriorating the washing efficiency.

[0013] Meanwhile, the dishwasher disclosed in the aforementioned prior art document 001 is configured such that a plurality of blower fans and a plurality of fan motors are positioned in front of the evaporator to increase the heat exchange efficiency of the evaporator constituting the heat pump device.

[0014] Therefore, as multiple blower fans and multiple fan motors are installed in the accommodation space formed between the tub and the base, a problem may arise in which the space efficiency of the accommodation space deteriorates.

[0015] Furthermore, the dishwasher disclosed in prior art 001 is configured such that the compressor and the main control panel, which correspond to the heating components, are placed adjacent to each other on the base.

[0016] At this time, the dishwasher disclosed in prior art document 001 has a problem in that it is not equipped with means to prevent overheating that may occur as the compressor and the main control panel are placed in close proximity, so there is a high risk of overheating of the compressor and the main control panel.

[0017] The present invention has been devised to solve the problems of the aforementioned prior art, and its first objective is to provide a dishwasher capable of preventing the deterioration of the operating efficiency of a heat pump module that may occur when air cooled through heat exchange with the evaporator is recirculated into the evaporator, by configuring the evaporator constituting the heat pump system to be placed inside a heat exchange duct forming a heat exchange path, and by configuring the air cooled through heat exchange with the evaporator to be exhausted to the outside of the base rather than being discharged into the receiving space between the tub and the base.

[0018] In addition, the present invention provides a second objective of a dishwasher capable of preventing deterioration of washing performance that may occur when cooled air cools the sump, washing pump, and tub by configuring the air cooled through heat exchange with the evaporator constituting the heat pump device so that it does not flow toward the sump, washing pump, and tub.

[0019] In addition, the third objective of the present invention is to provide a dishwasher that can minimize the space occupied by the blower module in the accommodation space and prevent deterioration of space utilization regarding the occupied space by configuring the blower module, which generates an airflow to be heat-exchanged with the evaporator, to include only a single blower fan and a single blower motor.

[0020] In addition, the fourth objective of the present invention is to provide a dishwasher that can effectively prevent overheating of the compressor and improve heat exchange efficiency for the condenser by configuring at least a portion of the airflow entering the evaporator to flow through a compressor corresponding to a heat-generating component.

[0021] In addition, the fifth objective of the present invention is to provide a dishwasher that can effectively prevent overheating that may occur when the compressor and the main control panel are placed in close proximity, by configuring the inlet of an air guide, which guides the flow direction of air entering the evaporator toward the compressor, to be formed toward or close to the main control panel.

[0022] 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 disposed below the tub; a sump disposed between the base and the tub and storing washing water to be supplied to the tub; and a heat pump module disposed between the base and the tub and heating the washing water supplied to the sump; wherein 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 heat exchange duct that accommodates the evaporator internally and forms a passage through which an airflow to be heat exchanged with the evaporator flows.

[0024] Additionally, the heat pump module further includes a blower module that generates an airflow of air to be heat-exchanged with the evaporator; and the heat exchange duct may include a first duct section that accommodates the evaporator; and a second duct section that accommodates the blower module.

[0025] In addition, the first duct section may be positioned further rearward than the second duct section.

[0026] In addition, the cross-sectional area of ​​the first duct section may be formed to be larger than the cross-sectional area of ​​the second duct section based on the direction perpendicular to the flow direction of the airflow.

[0027] Additionally, the heat exchange duct may further include a third duct section disposed between the first duct section and the second duct section.

[0028] In addition, the cross-sectional area of ​​the front end of the third duct section may be formed to be smaller than the cross-sectional area of ​​the rear end of the third duct section based on the direction perpendicular to the flow direction of the airflow.

[0029] In addition, the cross-sectional area may gradually increase as it progresses from the front end of the third duct section toward the rear end of the third duct section, based on a direction perpendicular to the flow direction of the airflow.

[0030] In addition, the third duct section can be integrally connected to the first duct section and the second duct section, respectively.

[0031] Additionally, the blower module includes a blower fan that accelerates the air to generate an airflow; and a blower motor that generates rotational driving force for the blower fan; and the blower fan and the blower motor may each be provided in a single unit.

[0032] In addition, the above-mentioned blower fan may be provided as an axial fan.

[0033] In addition, the heat exchange duct may be positioned so as to be in close contact with the inner surface of the rear wall of the base.

[0034] In addition, the rear wall of the base is provided with an outlet formed through it along the front-rear direction at a position where the heat exchange duct is placed in close contact, and the airflow of air that has been heat-exchanged with the evaporator can pass through the outlet and be exhausted.

[0035] Additionally, the compressor may be positioned further forward than the evaporator between the evaporator and one side wall of the base.

[0036] In addition, based on the front-rear direction, at least a portion of the compressor may be positioned further forward than the intake port of the heat exchange duct.

[0037] In addition, the compressor may be formed such that the volume of the portion positioned further forward than the intake port of the heat exchange duct is larger than the volume of the portion positioned further backward than the intake port of the heat exchange duct.

[0038] Additionally, the heat pump module may further include an air guide that guides the flow direction of the airflow to be heat-exchanged with the evaporator so that the airflow passes at least partially through the compressor and is introduced into the intake port of the heat exchange duct.

[0039] Additionally, the air guide comprises an upper wall positioned at a location spaced upward from the compressor; and a rear wall positioned at a location spaced rearward from the compressor; wherein the upper wall is connected to the top of the heat exchange duct and the rear wall can be connected to the outer circumference of the heat exchange duct.

[0040] Additionally, it further includes a main control panel that controls the operation of the compressor by interrupting the power supplied to the compressor; and the air guide is provided with an inlet into which an airflow to be heat-exchanged with the evaporator is introduced, and the inlet can be opened toward the main control panel.

[0041] In addition, the air guide is provided with an inlet into which an airflow to be heat-exchanged with the evaporator is introduced, and the inlet may be opened toward the front.

[0042] Additionally, the blower module includes a blower fan that accelerates the air to generate an airflow; and a blower motor that generates rotational driving force for the blower fan; wherein the blower fan is provided as a centrifugal fan and can be accommodated inside the air guide. Effects of the invention

[0043] The dishwasher according to the present invention is configured such that an evaporator is positioned inside a heat exchange duct forming a heat exchange path, and that air cooled while exchanging heat with the evaporator is exhausted to the outside of the base rather than being discharged into the receiving space between the tub and the base, thereby having the effect of preventing the deterioration of the operating efficiency of a heat pump module that may occur when air cooled while exchanging heat with the evaporator is recirculated into the evaporator.

[0044] In addition, the dishwasher according to the present invention has the effect of preventing deterioration of washing performance that may occur as cooled air cools the sump, washing pump, and tub.

[0045] In addition, the dishwasher according to the present invention has the effect of minimizing the space occupied by the blower module in the accommodation space and preventing the deterioration of space utilization regarding the occupied space.

[0046] In addition, the dishwasher according to the present invention has the effect of effectively preventing overheating of the compressor and improving the heat exchange efficiency of the condenser.

[0047] In addition, the dishwasher according to the present invention has the effect of effectively preventing overheating that may occur as the compressor and the main control panel are placed in close proximity.

[0048] 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

[0049] 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 plan view showing the state in which a heat pump module constituting a dishwasher according to the present invention is mounted on a base. Figure 6 is a plan view of the heat pump module illustrated in Figure 5. FIG. 7 is a front perspective view of the heat exchange duct, evaporator, and blower module shown in FIG. 6. FIGS. 8 and FIGS. 9 are a front view and a plan view showing the configuration shown in FIGS. 7 with the duct cover removed. FIG. 10 is a rear perspective view showing a state in which an exhaust port is formed on the rear wall of the base through which the airflow passing through the heat exchange duct shown in FIG. 9 is exhausted. FIG. 11 is a front perspective view illustrating a configuration in which a rear extension part is added to a first cover part constituting a duct cover. FIG. 12 is a vertical cross-sectional view of the configuration shown in FIG. 11. FIGS. 13 and FIGS. 14 are front perspective views of a heat pump module including an air guide according to a first embodiment of the present invention. FIG. 15 is a front perspective view of a heat pump module including an air guide according to a second embodiment of the present invention. FIGS. 16 and 17 are front perspective views of a heat pump module including an air guide according to a third embodiment of the present invention. FIGS. 18 and FIGS. 19 are a front perspective view and a plan view showing the state in which the heat pump module illustrated in FIGS. 16 and FIGS. 17 is mounted on a base. FIG. 20 is a front perspective view of a heat pump module including an air guide according to a fourth embodiment of the present invention. Specific details for implementing the invention

[0050] 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.

[0051] 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.

[0052] Throughout the specification, unless specifically stated otherwise, each component may be singular or plural.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] Hereinafter, the present invention will be described with reference to drawings illustrating the configuration according to an embodiment of the present invention.

[0059] [Overall Structure of the Dishwasher]

[0060] Hereinafter, the overall structure of the dishwasher (1) according to the present invention will be described in detail with reference to the attached drawings.

[0061] 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.

[0062] 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.

[0063] For example, the case (10) may include an upper panel (11), a left side panel (12), and a right side panel (13) that form the upper surface, left side, and right side, respectively, of the exterior of the dishwasher (1).

[0064] These upper panel (11), left side panel (12) and right side panel (13) can be formed integrally or formed individually and assembled.

[0065] 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.

[0066] 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).

[0067] 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).

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] A washing space (21) is formed inside the tub (20), and the open front surface can be opened and closed by a door (30).

[0074] 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.

[0075] 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).

[0076] Meanwhile, the drive unit (40) may be configured to include a sump (41) for storing washing water, a sump cover (42) for separating the sump (41) from the tub (20), a water supply unit (43) for supplying washing water to the sump (41) from the outside, a drainage unit (44) for discharging washing water from the sump (41) to the outside, a washing pump (45) for supplying washing water from the sump (41) to a spray unit, and a supply path (46).

[0077] The sump cover (42) is positioned above the sump (41) and can serve to spatially separate the tub (20) and the sump (41).

[0078] 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).

[0079] 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).

[0080] 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.

[0081] 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).

[0082] 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).

[0083] 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.

[0084] Meanwhile, the supply channel (46) serves to selectively supply washing water supplied from the washing pump (45) to the spraying section.

[0085] 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).

[0086] The supply channel (46) may be equipped with a supply channel switching valve (465) that selectively opens and closes the supply channels (461, 463).

[0087] 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.

[0088] Meanwhile, the spray unit is provided to spray washing water onto dishes stored in the storage unit (50).

[0089] 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).

[0090] 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).

[0091] 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).

[0092] 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).

[0093] 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).

[0094] 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).

[0095] 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) in an upward direction (U-direction) to increase cleaning efficiency.

[0096] 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.

[0097] Meanwhile, the washing space (21) may be provided with a storage section (50) for storing tableware.

[0098] 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).

[0099] 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.

[0100] 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.

[0101] 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).

[0102] 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).

[0103] 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.

[0104] 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.

[0105] Meanwhile, the door (30) is intended to open and close the open front surface of the tub (20) described above.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] Meanwhile, the rear panel 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 that can support the lower rack (51) of the storage unit (50) when the door (30) is fully opened.

[0111] 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.

[0112] Meanwhile, although not shown, the rear panel (30b) constituting the inner side of the door (30) may be further equipped with a detergent supply device for automatically supplying detergent into the interior of the tub (20).

[0113] 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.

[0114] 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).

[0115] 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.

[0116] As shown in FIG. 3, 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).

[0117] 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.

[0118] 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.

[0119] 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).

[0120] Meanwhile, the base (90) can provide a receiving space for components of the dishwasher (1), such as a sump (41).

[0121] To this end, the base (90) may have a front wall, a rear wall, a left wall, and a right wall that form the outer boundary surface of the receiving space.

[0122] 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).

[0123] 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).

[0124] The heat pump system may be provided together with the aforementioned wash water heater, or provided independently without the wash water heater.

[0125] As described below, the heat pump system provided in the dishwasher (1) according to the present invention can be placed inside the base (90) in a modularized state.

[0126] In addition, the heat pump system can be modularized and configured to be inserted and removed from the base (90) in batches.

[0127] 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).

[0128] The detailed configuration of the heat pump module (100) will be described later with reference to FIG. 4 and below.

[0129] [Schematic Configuration of a Heat Pump System]

[0130] 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.

[0131] FIG. 4 is a schematic diagram showing the configuration of a heat pump module (100).

[0132] 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).

[0133] 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.

[0134] 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).

[0135] 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).

[0136] 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).

[0137] 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).

[0138] Accordingly, the condenser (120) may be provided with separate flow paths through which the refrigerant and the cleaning water 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.

[0139] 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.

[0140] 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.

[0141] 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.

[0142] When the refrigerant comes out of the evaporator (130), it may be a mixed gas with a very low proportion of liquid or a superheated gas.

[0143] The refrigerant exiting 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. Meanwhile, in order to prevent the introduction of liquid refrigerant discharged from the evaporator (130), the refrigerant passing through the fourth pipe (154) can be introduced into the compressor (110) after passing through a gas-liquid separator (113).

[0144] 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).

[0145] 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) to generate an airflow.

[0146] As described below, the blower module (180) may be configured to include, for example, a blower fan (181) that accelerates air to generate an airflow, and a blower motor (182) that generates rotational driving force for the blower fan (181).

[0147] Additionally, as described below, the blower fan (181) and the blower motor (182) can be housed together with the evaporator (130) inside a heat exchange duct (170) that forms a passage through which airflow to be heat exchanged with the evaporator (130) flows.

[0148] Meanwhile, the heat pump module (100) of the dishwasher (1) according to the present invention may be installed directly on the base (90), or may be installed collectively in the receiving space of the base (90) in a modularized state separate from the base (90) and configured to be removed collectively from the receiving space of the base (90) to the outside.

[0149] Figure 5 and below illustrate, as an example, a configuration in which a heat pump module (100) is installed collectively in the receiving space of the base (90) in a modularized state separate from the base (90) and removed collectively from the receiving space of the base (90).

[0150] The configuration is illustrated. The present invention is not limited thereto, but will be described below based on the illustrated configuration.

[0151] For batch installation and batch removal, the heat pump module (100) may include a module base (160) on which at least a compressor (110), a condenser (120), an evaporator (130), and an expansion valve (140) are installed in batches.

[0152] 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 connected to the module base (160) and directly supported by the module base (160).

[0153] As described below, the module base (160) is positioned so as to be in surface contact with the bottom surface (91) of the base (90) and can be positioned on the base (90) so as to be directly supported through the bottom surface (91) of the base (90).

[0154] Accordingly, the compressor (110), condenser (120), evaporator (130), and expansion valve (140) constituting the heat pump module (100) can be placed on the base (90) in a state where they are indirectly installed and indirectly supported in the receiving space of the base (90) through the module base (160).

[0155] Meanwhile, the heat pump module (100) of the dishwasher (1) according to the present invention may be installed collectively in the receiving space of the base (90), and configured so that the heat pump module (100) can be removed collectively from the receiving space of the base (90) to the outside, and the heat pump module (100) may be configured to be inserted and removed collectively through an open side of the base (90).

[0156] 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).

[0157] 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 side (95) of the base (90).

[0158] 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).

[0159] 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).

[0160] 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).

[0161] Additionally, a water softening device (72) for softening the washing water to be supplied to the sump (41) may be placed adjacent to the water jacket (71) and below the lower wall (25) of the tub (20).

[0162] 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).

[0163] Additionally, as illustrated, the dry air supply unit (80) may include an intake duct (81) that sucks in air discharged from the tub (20).

[0164] 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).

[0165] 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).

[0166] In this way, considering the positional constraints in which the drying air supply unit (80), the intake duct (81) of the drying air supply unit (80), the water jacket (71), and the water softening device (72) are arranged, it is preferable to configure the heat pump module (100) to be inserted and removed at a location that minimizes interference with the drying air supply unit (80), the water jacket (71), and the water softening device (72). To this end, the heat pump module (100) may be configured to be inserted and removed from the open left wall (94) of the base (90).

[0167] However, this is merely illustrative, and in the case where the drying air supply unit (80), the intake duct (81) of the drying air supply unit (80), the water jacket (71), and the water softening device (72) are positioned so as to be offset to the left relative to the sump (41) in close proximity to the right wall (27) of the tub (20) and the right side (95) of the base (90), the heat pump module (100) may be configured to be inserted and removed from the open right side (95) of the base (90).

[0168] The present invention is not limited thereto, but below, the invention will be described based on exemplary embodiments in which the heat pump module (100) is configured to be inserted and removed from the open left wall (94) of the base (90).

[0169] [Modular Structure of Heat Pump Modules]

[0170] Hereinafter, an exemplary arrangement structure and array structure of a heat pump module (100) according to the present invention will be described in detail with reference to FIGS. 5 and 6.

[0171] The heat pump module (100) according to the present invention may include a compressor (110) that compresses the refrigerant and discharges the refrigerant in a high temperature and high pressure state.

[0172] As described, the compressor (110) constituting the heat pump module (100) may be an electric compressor in which a compression section that compresses a refrigerant in a gaseous state and a motor section that generates rotational driving force to be braked to the compression section are integrated.

[0173] At this time, considering the space utilization of the base (90)'s accommodation space, it is necessary to minimize the horizontal area occupied by the compressor (110) in the module base (160).

[0174] To this end, the compressor (110) can be placed on the module base (160) in an upright position where the rotation axis is arranged parallel to the up and down direction (UD direction).

[0175] 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.

[0176] 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).

[0177] Corresponding to the fastening tab (112) of the compressor (110), the base plate (161) of the module base (160) may be integrally provided with a fastening boss (164, FIG. 8 and FIG. 9).

[0178] The fastening tab (112) of the compressor (110) can be firmly fastened to the fastening boss (164) of the base plate (161) through a fastening means such as a screw bolt.

[0179] 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.

[0180] Meanwhile, the compressor (110) can be positioned between the main control panel (210) and the evaporator (130) when viewed from the left-right direction (Le-Ri direction).

[0181] More specifically, the compressor (110) can be positioned as close as possible to the intake port (170a) of the heat exchange duct (170) in the space formed between the blower module (180) and the main control panel (210) that is accommodated in the heat exchange duct (170).

[0182] Through this, the compressor (110) can be exposed to the airflow entering the intake port (170a) of the heat exchange duct (170), and the cooling effect on the compressor (110) can be improved. Furthermore, as the airflow of air heated while passing through the compressor (110) enters the heat exchange duct (170), the heat exchange efficiency for the evaporator (130) can be further improved compared to the conventional method.

[0183] At this time, in order to increase the exposure area for the airflow (F_in) to be heat-exchanged, at least a portion of the compressor (110) can be positioned further forward than the intake port (170a) of the heat exchange duct (170) in the forward direction (FR direction).

[0184] More specifically, the volume of the compressor (110) in the portion positioned further forward than the intake port (170a) of the heat exchange duct (170) can be positioned such that it is larger than the volume of the compressor (110) in the portion positioned further rearward than the intake port (170a) of the heat exchange duct (170).

[0185] Additionally, as described below, an air guide (173) may be further included as a means to guide the flow direction of the airflow (F_in) so as to increase the proportion of the airflow (F_in) that has passed through the compressor (110) among the airflow (F_in) entering the heat exchange duct (170).

[0186] 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).

[0187] To this end, as shown in FIG. 5, the compressor (110) can be positioned behind the sump (41) and the wash pump (45).

[0188] 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).

[0189] Meanwhile, the heat pump module (100) may include a condenser (120) that performs heat exchange between the refrigerant and the washing water.

[0190] For example, the condenser (120) constituting the heat pump module (100) 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.

[0191] 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.

[0192] That is, in order to ensure that the flow path of the washing water and the flow path of the refrigerant are as long as possible along the central axis direction, the cylindrical condenser (120) can be formed with a width in the central axis direction that is much larger than its diameter.

[0193] 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.

[0194] However, in order to be effectively and efficiently placed in the receiving space of the base (90) which is subject to height constraints in the vertical direction (UD direction), the condenser (120) can be arranged and combined in the module base (160) such that the horizontal direction (Le-Ri direction) is the longitudinal direction.

[0195] Meanwhile, the condenser (120) having a cylindrical shape may be configured as a segmented body that is divided along the longitudinal direction, for example.

[0196] More specifically, the condenser (120) composed of a divided body may include a first body (121) in which an inlet pipe (123) into which washing water to be heated is introduced is formed.

[0197] As illustrated by example, the inlet pipe (123) can be integrally formed on the outer surface of the first body (121).

[0198] Additionally, the condenser (120) composed of a divided body may include a second body (122) in which an outlet pipe (124) through which heated washing water is discharged is formed.

[0199] As illustrated by example, the outlet pipe (124) can be integrally formed on the outer surface of the second body (122).

[0200] Although not shown, a washing water pipe (190) can be connected to each of the inlet pipe (123) and the outlet pipe (124).

[0201] For example, one end of the first washing water pipe (191) can be connected to the inlet pipe (123) of the first body (121).

[0202] 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.

[0203] 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 other end of the first washing water pipe (191).

[0204] 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.

[0205] 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 (121) through the first washing water pipe (191).

[0206] Additionally, as an example, one end of the second washing water pipe (192) may be connected to the outlet pipe (124) of the second body (122).

[0207] The other end of the second washing water pipe (192) can be connected to the aforementioned supply flow switching valve (465).

[0208] 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).

[0209] 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.

[0210] 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.

[0211] 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.

[0212] Through this, the process of separating the first washing water pipe (191) and the second washing water pipe (192) from the inlet pipe (123) and outlet pipe (124) of the condenser (120) in advance during the process of removing and separating the heat pump module (100) from the base (90) can be omitted.

[0213] Meanwhile, to increase the heating efficiency or heat exchange efficiency for the washing water, the outlet pipe (124) and the inlet pipe (123) of the condenser (120) may be positioned as far apart as possible along the longitudinal direction of the condenser (120).

[0214] To this end, based on the illustrated state, the inlet pipe (123) may be positioned as close as possible to the front end of the first body (121), and the outlet pipe (124) may be positioned as close as possible to the rear end of the second body (122).

[0215] Meanwhile, a condenser refrigerant pipe may be introduced inside the first body (121) and the second body (122) of the condenser (120) to convert the gaseous refrigerant into a liquid refrigerant.

[0216] For example, the condenser refrigerant tube can be introduced into the interior of the condenser (120) through the front end of the first body (121).

[0217] The condenser refrigerant tube introduced into the interior 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.

[0218] Meanwhile, as illustrated, the condenser (120) can be positioned in front of the sump (41) and the wash pump (45).

[0219] More specifically, the condenser (120) constituting the heat pump module (100) can be positioned between the sump (41) and the front wall (92) of the base (90).

[0220] At this time, so as not to cause interference with the lower frame (not shown) positioned in front of the front wall (92) of the base (90), the condenser (120) can be positioned so that no part protrudes forward from the front wall (92) of the base (90).

[0221] As the condenser (120) is positioned in such a location, the straight-line distance from the inlet pipe (123) and outlet pipe (124) of the condenser (120) to the inlet and outlet ends of the sump (41) or cleaning pump (45) can be minimized.

[0222] Therefore, the length of the first washing water pipe (191) connected to the inlet pipe (123) of the condenser (120) and the second washing water pipe (192) connected to the outlet pipe (124) of the condenser (120) can be minimized.

[0223] In addition, the space occupied by the first washing water pipe (191) and the second washing water pipe (192) inside the base (90) can be minimized, thereby improving the space utilization of the base (90)'s accommodation space.

[0224] Additionally, as illustrated, by being arranged lengthwise along the left-right direction (Le-Ri direction), the left-right direction (Le-Ri direction) length of the condenser (120) can be increased. This allows the heat exchange capacity of the condenser (120) to be secured.

[0225] In addition, with respect to the evaporator (130), the condenser (120) can be positioned at a location as far as possible from the evaporator (130) in the forward direction (FR direction). Therefore, the influence of the airflow (F_in) that exchanges heat with the evaporator (130) on the condenser (120) can be minimized.

[0226] Meanwhile, the heat pump module (100) 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.

[0227] As described above, the evaporator (130) is configured to undergo a phase change while exchanging heat with the airflow (F_in) generated through the air in the receiving space of the base (90).

[0228] Accordingly, similar to the condenser refrigerant tube, the evaporator (130) can be formed into a multi-row structure and a multi-layer structure by bending the evaporator refrigerant tube (131) multiple times. Through this, the heat exchange area for the airflow (F_in) to be heat exchanged can be maximized. As described below, for example, an evaporator (130) having a 3-row / 4-layer structure by bending the evaporator refrigerant tube (131) multiple times can be applied.

[0229] Meanwhile, the evaporator refrigerant pipe (131) of the evaporator (130) may be configured to exchange heat with the internal air of the receiving space of the base (90) or with external air introduced from the outside of the base (90).

[0230] Figure 5 and below illustrate an exemplary embodiment in which the evaporator refrigerant pipe (131) of the evaporator (130) is configured to exchange heat with the internal air of the receiving space of the base (90).

[0231] The present invention is not limited thereto, but is described based on a configuration in which the internal air of the receiving space of the base (90) is exhausted to the outside after heat exchange with the evaporator refrigerant pipe (131) and heat exchange fin (132) of the evaporator (130).

[0232] Meanwhile, when the evaporator refrigerant pipe (131) and heat exchange fin (132) of the evaporator (130) exchange heat with the internal air of the base (90), a flow path or passage needs to be formed so that the heat-exchanged air is discharged to the outside.

[0233] In this way, the evaporator refrigerant pipe (131) of the evaporator (130) can be positioned as close as possible to the rear wall (93) of the base (90) so that internal air can be positioned through the evaporator refrigerant pipe (131) of the evaporator (130) and the shortest path outside the base (90).

[0234] Meanwhile, to maximize the heat exchange efficiency for the internal air of the base (90), the evaporator refrigerant pipe (131) of the evaporator (130) can be accommodated inside the duct body (171) of the heat exchange duct (170) which forms a heat exchange path or heat exchange passage.

[0235] Accordingly, 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 (131) and heat exchange fin (132) housed inside.

[0236] Preferably, the evaporator (130) and the heat exchange duct (170) can be positioned on the base (90) such 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.

[0237] Meanwhile, corresponding to the duct body (171), an exhaust port (934) may be provided in the form of a grille on the rear wall (93) of the base (90). The airflow (F_out) that has undergone heat exchange while passing through the duct body (171) can pass through the exhaust port (934) and be smoothly exhausted to the outside of the base (90).

[0238] Meanwhile, a blower module (180) may be disposed inside the duct body (171) to generate an airflow (F_in) to be heat-exchanged by accelerating the evaporator refrigerant pipe (131) of the evaporator (130) and the internal air of the base (90).

[0239] At this time, the blower module (180) may be configured to include only a single blower fan (181) and a single blower motor (182). Through this, the increase in volume of the heat exchange duct (170) can be suppressed as much as possible, and the space utilization of the receiving space of the base (90) can be improved.

[0240] The detailed configuration of the heat exchange duct (170) accommodating the evaporator (130) and the blower module (180) will be described later with reference to FIGS. 7 to 10.

[0241] Meanwhile, the heat pump module (100) may include an expansion valve (140) disposed between the second pipe (152) and the third pipe (153).

[0242] In the illustrated embodiment, the expansion valve (140) may be positioned in front of the compressor (110) at a location where interference with the aforementioned compressor (110) and condenser (120) can be minimized.

[0243] Meanwhile, the heat pump module (100) may include a module base (160) that supports the aforementioned compressor (110), condenser (120), evaporator (130), and refrigerant piping (150) installed collectively.

[0244] More specifically, the module base (160) may include a plate-shaped base plate (161).

[0245] A compressor (110), a condenser (120), and an evaporator (130) can be fixed collectively on the upper side of the base plate (161), and a compressor (110), a condenser (120), and an evaporator (130) can be supported collectively.

[0246] As described above, a plurality of fastening bosses (164) 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.

[0247] However, considering the accommodation space of the base (90) which is subject to height constraints in the vertical direction (UD direction), the thickness of the base plate (161) can be formed to be approximately constant overall.

[0248] However, 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).

[0249] Accordingly, reinforcing ribs (1612) extending along the left-right direction (Le-Ri direction) and the front-back direction (FR direction) may be integrally provided on the upper or lower surface of the base plate (161). Through this, the rigidity of the module base (160) can be reinforced and damage can be prevented during the process of taking in and taking out the heat pump module (100).

[0250] Meanwhile, as shown in FIG. 6, the shape of the module base (160) can be determined by considering the position and arrangement direction in which the compressor (110), condenser (120), and evaporator (130) are respectively placed.

[0251] In addition, the external shape of the module base (160) can be determined to have a shape that avoids the sump (41) and the washing pump (45) placed on the base (90).

[0252] Considering this, when viewed from above, the base plate (161) of the module base (160) may have an exemplary left-right reversed U-shaped exterior.

[0253] At this time, the rear edge of the base plate (161) can be extended linearly along the rear wall (93) of the base (90).

[0254] Additionally, the left edge of the base plate may extend linearly along the left wall (94) of the base (90).

[0255] Meanwhile, similar to conventional methods, a main control panel (210) can be detachably disposed on the left wall (94) of the base (90).

[0256] The main control panel (210) controls the operation of electrical components by intermittently supplying power to electrical components such as a cleaning pump (45), a compressor (110), a blower motor (182), etc.

[0257] Therefore, in order to minimize the influence from the water jacket (71), water softener (72), sump (41), and wash pump (45) which may leak, the main control panel (210) may be placed on the left wall (94) of the base (90) at a position as far as possible from them as in the conventional method.

[0258] To this end, as shown in FIGS. 5 and 6, the main control panel (210) can be arranged along the edge of the left wall (94) of the base (90).

[0259] Additionally, 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.

[0260] 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).

[0261] However, as described above, the heat pump module (100) of the present invention is configured to be inserted and removed through the left wall (94) of the base (90) where the main control panel (210) is installed.

[0262] That is, the heat pump module (100) of the present invention can be configured to be withdrawn from the base (90) while moving horizontally along the left direction (Le-direction) and to be inserted into the base (90) while moving horizontally along the right direction (Ri-direction).

[0263] Accordingly, considering that the main control panel (210) is positioned to block the inflow and outflow of the heat pump module (100), the main control panel (210) can be configured to be at least partially mounted on the module base (160) and at least partially supported by the module base (160).

[0264] FIGS. 5 and 6 illustrate an exemplary configuration in which the main control panel (210) is entirely supported on the module base (160).

[0265] A pair of installation ribs (162) may be provided on the module base (160) as a means for supporting and fixing the main control panel (210).

[0266] A main control panel (210) can be fastened to a pair of installation ribs (162) by means of fastening means such as screw bolts not shown.

[0267] Although not shown, the main control panel (210) can be fastened to the left wall (94) of the base (90) at a location different from the installation rib (162) through separate screw bolts, etc.

[0268] Additionally, a slot to which the lower part of the main control panel (210) is joined can be formed along the front-to-back direction (FR direction) between a pair of installation ribs (162).

[0269] Meanwhile, as the main control panel (210) is configured to be supported at least partially on the module base (160), an area on the base plate (161) for mounting the main control panel (210) may be formed.

[0270] As shown in FIG. 6, the area where the main control panel (210) is mounted may be formed to the left of the area where the components of the heat pump module (100) are mounted.

[0271] Accordingly, the base plate (161) can be divided into a first area (A1) where the components of the heat pump module (100) are mounted and a second area (A2) where the main control panel (210) is mounted.

[0272] As described, the second region (A2) may extend along the front-rear direction (FR direction) on the left end edge side of the base plate (161).

[0273] Additionally, the second area (A2) may have a width in the left-right direction (Le-Ri direction) corresponding to the thickness in the left-right direction (Le-Ri direction) of the main control panel (210).

[0274] Meanwhile, the lower surface of the base plate (161) of the module base (160) can be placed on the base (90) in a state of surface contact with the bottom surface (91) of the base (90) as a whole.

[0275] A seating surface may be formed on the bottom surface (91) of the base (90) to which the base plate (161) is joined in a surface contact state.

[0276] The mounting surface of the base (90) may have a shape corresponding to the shape of the base plate (161) of the module base (160) and an area corresponding to the area of ​​the base plate (161) of the module base (160).

[0277] Meanwhile, a guide rib (911) that protrudes along the upward direction (U-direction) from the bottom surface (91) may be integrally formed on the bottom surface (91) of the base (90).

[0278] As shown in FIG. 5, the guide rib (911) can be extended along the outer edge of the base plate (161) of the module base (160).

[0279] Additionally, the guide rib (911) may be provided in a barrier shape to have a shape corresponding to the outer edge of the base plate (161).

[0280] Therefore, the mounting position of the heat pump module (100) is effectively guided by the guide rib (911) of the base (90), and the heat pump module (100) can be effectively prevented from deviating from its proper position.

[0281] In addition, the direction of movement of the heat pump module (100) can be effectively guided by the guide rib (911) of the base (90) when moving horizontally in the left-right direction (Le-Ri direction) for mounting and removing the heat pump module (100).

[0282] [Detailed Configuration of Heat Exchange Duct]

[0283] With reference to FIGS. 7 to 10 below, the detailed configuration of the heat exchange duct (170) constituting the heat pump module (100) according to the present invention and the detailed configuration of the outlet (934) through which the heat-exchanged airflow (F_out) is exhausted in the heat exchange duct (170) will be described.

[0284] First, referring to FIGS. 7 and 8, the heat exchange duct (170) of the heat pump module (100) according to the present invention may include a duct body (171) that accommodates an evaporator refrigerant pipe (131) and a blower module (180) inside.

[0285] The duct body (171) serves to accommodate the evaporator refrigerant pipe (131) and heat exchange fin (132) that constitute the evaporator (130) inside.

[0286] To this end, the duct body (171) may include a first duct section (1711) that accommodates an evaporator refrigerant pipe (131) and a heat exchange fin (132) inside.

[0287] As described above, considering the shape of the evaporator (130) in which the left-right direction (Le-Ri direction) is the length direction and the front-back direction (FR direction) is the thickness direction, the first duct section (1711) may be configured in the shape of a hollow cuboid box in which the left-right direction (Le-Ri direction) is the length direction and the front-back direction (FR direction) is the thickness direction.

[0288] Additionally, the duct body (171) may include a second duct section (1712) that accommodates a blower module (180) inside.

[0289] As described above, the blower module (180) may be configured to include only a single blower fan (181) and a single blower motor (182).

[0290] Due to the constraint of the vertical (UD direction) size of the blower module (180) being installed, the blower fan (181) constituting the blower module (180) can be set to have a diameter smaller than the horizontal (Le-Ri direction) width of the evaporator (130).

[0291] Therefore, the width of the second duct section (1712) in the left-right direction (Le-Ri direction) can be formed to be smaller than the width of the first duct section (1711) in the left-right direction (Le-Ri direction).

[0292] That is, the vertical cross-sectional area of ​​the second duct section (1712) can be formed to be smaller than the vertical cross-sectional area of ​​the first duct section (1711).

[0293] Therefore, when the second duct section (1712) is directly connected to the first duct section (1711), there is a risk that flow resistance and flow loss will occur significantly as the cross-sectional area of ​​the passage through which the heat-exchanged airflow (F_in) flows changes rapidly, thereby forming vortices or turbulence.

[0294] To this end, a third duct section (1713) with a vertical cross-sectional area that gradually expands may be provided between the first duct section (1711) and the second duct section (1712).

[0295] More specifically, considering the direction of travel of the airflow (F_in) to be heat-exchanged, the third duct section (1713) may have a shape in which the cross-sectional area gradually expands as it progresses from the front to the rear.

[0296] As described, the rear end of the third duct section (1713) is integrally connected to the first duct section (1711), and the front end of the third duct section (1713) can be integrally connected to the second duct section (1712).

[0297] Meanwhile, the heat exchange duct (170) serves to form a passage through which the airflow (F_in) to be heat-exchanged with the evaporator (130) flows.

[0298] To this end, the first duct section (1711), the second duct section (1712), and the third duct section (1713) constituting the heat exchange duct (170) may each be configured to have a hollow shape.

[0299] An intake port (170a) into which an airflow (F_in) to be heat-exchanged with the evaporator (130) is introduced can be formed through the front end surface of the second duct section (1712).

[0300] An exhaust port (170b) through which the airflow (F_in) to be heat-exchanged with the evaporator (130) is discharged can be formed through the rear end surface of the first duct section (1711).

[0301] Accordingly, as shown in FIG. 9, the internal air of the base (90) introduced through the intake port (170a) can be accelerated by the blower fan (181) to generate an airflow (F_in) that will be heat exchanged with the evaporator refrigerant pipe (131) and the heat exchange fin (132).

[0302] At this time, as the flow cross-sectional area gradually expands while passing through the third duct section (1713), the accelerated airflow (F_in) can be evenly diffused toward the evaporator refrigerant tube (131) and the heat exchange fin (132).

[0303] The airflow (F_out) that has been heat-exchanged with the evaporator refrigerant pipe (131) and the heat exchange fin (132) can be discharged to the outside of the heat exchange duct (170) by passing through the exhaust port (170b) formed through the rear surface of the first duct section (1711).

[0304] At this time, the open area of ​​the exhaust port (170b) of the first duct section (1711) can be formed to be smaller than the area of ​​the space occupied by the evaporator refrigerant pipe (131).

[0305] This takes into account the opening area of ​​the discharge port (934) formed through the rear wall (93) of the base (90), as described below.

[0306] As described below, the outlet (934) of the base (90) can be formed to be smaller than the area of ​​the space occupied by the evaporator refrigerant pipe (131).

[0307] Meanwhile, in order to be modularized like the aforementioned condenser (120) and compressor (110), the duct body (171) of the heat exchange duct (170) may be detachably coupled to the base plate (161) of the module base (160) or integrally connected to the base plate (161) of the module base (160).

[0308] In FIG. 7 and below, an exemplary configuration is shown in which the lower end of the first duct section (1711), the lower end of the second duct section (1712), and the lower end of the third duct section (1713) constituting the duct body (171) are each connected integrally to the upper surface of the base plate (161).

[0309] The present invention is not limited thereto, but below, it will be described based on an exemplary configuration in which the first duct section (1711), the second duct section (1712), and the third duct section (1713) are each integrally connected to the base plate (161).

[0310] Meanwhile, a blower module (180) that generates an airflow to be heat-exchanged with the evaporator refrigerant pipe (131) and heat exchange fin (132) of the evaporator (130) may be disposed inside the duct body (171).

[0311] 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 (181) and a single blower motor (182).

[0312] In FIG. 6 and below, embodiments are illustrated in which the blower fan (181) 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), such as a Sirocco fan that becomes a centrifugal fan. An embodiment in which the blower fan (181) is configured as a centrifugal fan will be described later with reference to FIG. 20.

[0313] 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 (181) 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).

[0314] As illustrated, the blower motor (182) can be supported by the bracket (183) so that the airflow (F_in) to be heat-exchanged is exposed by the bracket (183).

[0315] As shown in FIG. 8, a slot (1712a) having a front-to-back (FR direction) width corresponding to the front-to-back (FR direction) width of the bracket (183) of the blower module (180) may be formed inside the second duct section (1712).

[0316] With the blower motor (182) and blower fan (181) combined with the bracket (183), the bracket (183) can be inserted into the slot (1712a) of the second duct section (1712) in a sliding manner and combined.

[0317] Meanwhile, the first duct section (1711), the second duct section (1712), and the third duct section (1713) constituting the duct body (171) of the heat exchange duct (170) can each be configured so that their upper surfaces are completely open.

[0318] The heat exchange duct (170) may further include a duct cover (172) that serves to close the open upper surfaces of the first duct section (1711), the second duct section (1712), and the third duct section (1713) constituting the duct body (171).

[0319] As described, the duct cover (172) can be configured to collectively close the top surface of the first duct section (1711), the top surface of the second duct section (1712), and the top surface of the third duct section (1713).

[0320] More specifically, the duct cover (172) may include a first cover portion (1721) that closes the open top surface of the first duct portion (1711), and a second cover portion (1722) that closes the open top surface of the second duct portion (1712) and the open top surface of the third duct portion (1713).

[0321] As described, the first cover portion (1721) and the second cover portion (1722) can be formed integrally with each other.

[0322] Through this, the airflow (F_out) that has been heat-exchanged with the evaporator refrigerant pipe (131) and the heat exchange fin (132) can be prevented from leaking into the receiving space of the base (90). Through this, the phenomenon in which the airflow (F_out) that has been heat-exchanged with the evaporator refrigerant pipe (131) and the heat exchange fin (132) is re-entered into the heat exchange duct (170) or leaked into the tub (20) and sump (41), thereby lowering the washing water temperature, can be minimized.

[0323] Additionally, the duct cover (172) can be detachably attached to the upper surface of the duct body (171).

[0324] For a detachable connection, a fastening tab (112) extending downward can be integrally provided on the left end surface and the right end surface of the first cover part (1721).

[0325] Corresponding to the fastening tab (112), a locking projection (1711a) that is engaged with the fastening tab (112) may be integrally formed on the left and right sides of the first duct section (1711).

[0326] Therefore, for maintenance and repair, the heat pump module (100) is removed from the bottom surface (91) of the base (90) and pulled out from the open left wall (94) of the base (90), and then only the duct cover (172) can be independently separated from the duct body (171).

[0327] Therefore, even if only the duct cover (172) is separated from the duct body (171), the evaporator refrigerant pipe (131) and the blower module (180) housed inside the duct body (171) can be repaired or replaced. Accordingly, the convenience of maintenance and repair of the evaporator (130) and the blower module (180) can be improved.

[0328] Meanwhile, as described above, the airflow (F_out) that has been heat-exchanged with the evaporator (130) is configured to be exhausted to the outside of the dishwasher (1) after passing through the exhaust port (170b) of the heat exchange duct (170).

[0329] To this end, an outlet (934) may be formed through the rear wall (93) of the base (90) along the front-rear direction (FR direction).

[0330] As shown in FIG. 10, a pair of column sections (9311) supporting the load of the tub (20) may be integrally formed in the rear wall (93) of the base (90).

[0331] To prevent a decrease in strength, it may be difficult to form an outlet (934) at the location where a pair of pillars (9311) are formed.

[0332] Accordingly, the outlet (934) of the base (90) can be positioned and formed in a location that avoids a pair of pillars (9311).

[0333] Preferably, as illustrated, the duct body (171) of the heat exchange duct (170) is positioned in the area between a pair of column sections (9311) based on the left-right direction (Le-Ri direction), and an outlet (934) may be formed immediately behind the duct body (171).

[0334] As illustrated in FIG. 10, to distribute the load of the tub (20), a pair of column sections (9311) may be formed at positions symmetrical with respect to a centerline that divides the base (90) along the left-right direction (Le-Ri direction).

[0335] Accordingly, the duct body (171) of the heat exchange duct (170) and the outlet (934) 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).

[0336] However, as illustrated, the rear wall (93) of the base (90) may be configured to have a stepped shape.

[0337] More specifically, the rear wall (93) of the base (90) may include an upper wall surface (931) and a lower wall surface (932) formed by being concavely sunken forward from the upper wall surface (931) with respect to the front-rear direction (FR direction).

[0338] Therefore, a stepped space that is concavely sunken toward the front can be formed between the upper wall surface (931) and the ground where the base (90) is supported.

[0339] Such a stepped space may provide an area where a water supply pipe, drainage pipe, or power cable connected through the lower wall surface (932) of the rear wall (93) of the base (90) is placed or extended.

[0340] Meanwhile, as described above, the heat exchange duct (170) is positioned in close contact with the front surface of the rear wall (93) of the base (90).

[0341] Accordingly, the exhaust port (170b) of the heat exchange duct (170) can be positioned to belong to the area of ​​the upper wall surface (931) and the area of ​​the lower wall surface (932) of the rear wall (93) of the base (90).

[0342] With this in mind, the outlet (934) can be formed through so as to be in the area of ​​the upper wall surface (931) and the area of ​​the lower wall surface (932) of the rear wall (93) of the base (90).

[0343] Accordingly, the upper edge of the discharge port (934) may be positioned on the upper wall surface (931) of the rear wall (93), and the lower edge of the discharge port (934) may be positioned on the lower wall surface (932) of the rear wall (93).

[0344] Through this, a roof-shaped sunshade (933) can be formed on the rear upper part of the outlet (934) as shown in FIGS. 10 and 11.

[0345] The airflow (F_out) flowing out through the outlet (934) can be guided in a flow direction to move along the stepped space by the stepped shape of the rear wall (93) of the base (90) and the sunshade portion (933) of the rear wall (93).

[0346] In other words, the stepped space can function as a passage through which the heat-exchanged airflow (F_out) flows.

[0347] Meanwhile, a guide vane (935) that guides the flow direction of the heat-exchanged airflow (F_out) may be placed at the outlet (934) of the base (90).

[0348] For example, the guide vane (935) can guide the flow direction by splitting the heat-exchanged airflow (F_out) so that some of it flows along the left direction (Le-direction) and the rest of it flows along the right direction (Ri-direction).

[0349] Through this, the heat-exchanged airflow (F_out) passing through the bottom surface (91) of the base (90) and being re-entered into the receiving space of the base (90) can be minimized.

[0350] However, as the sunshade (933) is positioned immediately behind the exhaust port (170b) of the heat exchange duct (170) in this manner,

[0351] There is a possibility that some of the airflow (F_out) discharged through the exhaust port (170b) may be recirculated into the interior of the base (90) through the gap between the sunshade (933) and the rear surface of the heat exchange duct (170).

[0352] In order to prevent the re-entry of the heat-exchanged airflow (F_out) in this manner, the duct cover (172) of the heat exchange duct (170) may further include a rear extension (1721b).

[0353] As shown in FIG. 11, the front end of the rear extension (1721b) of the duct cover (172) can be integrally connected to the first cover part (1721).

[0354] Additionally, the rear end of the rear extension (1721b) of the duct cover (172) can be extended to a position that can at least partially cover the upper surface, left side, and right side of the sunshade (933).

[0355] Additionally, the rear extension (1721b) of the duct cover (172) can be positioned to form a surface contact state with the sunshade (933).

[0356] Accordingly, as shown in FIG. 12, a gap that may be formed between the sunshade (933) and the rear surface of the heat exchange duct (170) due to machining tolerance can be effectively sealed by the rear extension (1721b) of the duct cover (172).

[0357] Therefore, due to the machining tolerance, the leakage of heat-exchanged airflow (F_out) into the receiving space of the base (90) and the re-entry into the interior of the heat exchange duct (170) through the gap between the sunshade (933) and the rear surface of the heat exchange duct (170) can be minimized.

[0358] [Detailed Structure of the Air Guide]

[0359] Hereinafter, the detailed configuration of the air guide (173) of the heat pump module (100) according to the present invention will be explained with reference to FIGS. 13 to 19.

[0360] As described above, the present invention aims to prevent overheating that may occur when the compressor (110) and the main control panel (210) are placed in close proximity.

[0361] As described above, the compressor (110) can be positioned between the main control panel (210) and the evaporator (130) when viewed from the left-right direction (Le-Ri direction).

[0362] More specifically, it can be placed in the space formed between the blower module (180) accommodated in the heat exchange duct (170) and the main control panel (210).

[0363] At this time, with respect to the heat exchange duct (170), the compressor (110) can be positioned close to the intake port (170a) of the heat exchange duct (170).

[0364] Therefore, the compressor (110) can be exposed to the airflow entering the intake port (170a) of the heat exchange duct (170), and the cooling effect on the compressor (110) can be improved.

[0365] However, there is a possibility that the cooling effect caused by the airflow (F_in) to be heat-exchanged between the compressor (110) and the main control panel (210) may be insufficient if it is placed only in close proximity to the intake port (170a) of the heat exchange duct (170).

[0366] As a means to guide the flow direction of the airflow (F_in) so as to increase the proportion of the airflow (F_in) that has passed through the compressor (110) among the airflow (F_in) flowing into the heat exchange duct (170), the heat pump module (100) may further include an air guide (173).

[0367] FIGS. 13 and FIGS. 14 illustrate the configuration of an air guide (173) according to a first embodiment.

[0368] Referring to FIGS. 13 and 14, the air guide (173) according to the first embodiment may include an upper wall (1731) positioned at an upward (U-direction) distanced from the compressor (110).

[0369] As described, the upper wall (1731) serves as a roof that covers the compressor (110) from the upper side.

[0370] Therefore, when viewed from the upper direction (U-direction), the compressor (110) is obscured by the upper wall (1731), so that it cannot be observed from the upper side.

[0371] Therefore, the airflow (F_in) flowing vertically toward the compressor (110) can be blocked by the upper wall (1731) of the air guide (173).

[0372] Meanwhile, the upper wall (1731) of the air guide (173) may be integrally connected to the second cover portion (1722) of the duct cover (172), or formed separately and configured to be coupled to the second cover portion (1722) of the duct cover (172).

[0373] The illustrated first embodiment includes, for example, a configuration in which the right edge of the upper wall (1731) of the air guide (173) is integrally connected to the second cover portion (1722) of the duct cover (172).

[0374] Additionally, the air guide (173) according to the first embodiment may further include a rear wall (1732) positioned at a rearward distance from the compressor (110).

[0375] As described, the rear wall (1732) serves to shield the compressor (110) from the rear.

[0376] Therefore, when viewed from the rear, the compressor (110) is completely obscured by the rear wall (1732), so that it cannot be observed from the rear.

[0377] Therefore, the airflow (F_in) flowing forward from the rear of the compressor (110) toward the compressor (110) can be blocked by the rear wall (1732) of the air guide (173).

[0378] As described, the upper edge of the rear wall (1732) of the air guide (173) can be integrally connected to the rear edge of the upper wall (1731).

[0379] Additionally, the right end edge of the rear wall (1732) can be extended to a position where it contacts the outer circumference of the duct body (171) of the heat exchange duct (170).

[0380] Therefore, the airflow (F_in) flowing from the rear of the compressor (110) toward the compressor (110) can be blocked.

[0381] Additionally, the lower edge of the rear wall (1732) may be extended to a position where it contacts the bottom surface (1611) of the base plate (161) of the module base (160).

[0382] As described, the upper wall (1731) and the rear wall (1732) of the air guide (173) according to the first embodiment may be provided in the shape of a plate that is completely closed without having an opening.

[0383] Meanwhile, the air guide (173) according to the first embodiment may further include a left wall (1733) positioned at a location spaced apart from the compressor (110) in the left direction (Le-direction).

[0384] As described, the upper edge of the left wall (1733) is integrally connected to the left edge of the upper wall (1731), and the rear edge of the left wall (1733) can be integrally connected to the left edge of the rear wall (1732).

[0385] However, the left wall (1733) is positioned between the compressor (110) and the main control panel (210) and is positioned to separate them.

[0386] A plurality of openings may be provided in the left wall (1733) of the air guide (173) according to the first embodiment so that the airflow (F_in) passing through the main control panel (210) can flow toward the compressor (110).

[0387] As such, the air guide (173) according to the first embodiment is configured through the upper wall (1731), the rear wall (1732), and the left wall (1733), so that the front surface is opened by the air guide (173) and an open passage can be formed through which heat-exchanged airflow (F_out) can flow.

[0388] As the compressor (110) is positioned in such a way that it is exposed to the open passage, at least a portion of the airflow (F_in) entering the intake port (170a) of the heat exchange duct (170) can be introduced after passing through the compressor (110).

[0389] In particular, the ratio of airflow (F_in) introduced after passing through the outer surface of the compressor (110) can be significantly increased by the upper wall (1731) and rear wall (1732) of the air guide (173), thereby improving the cooling efficiency of the compressor (110).

[0390] In addition, as the proportion of the airflow (F_in) heated by the compressor (110) increases, the heat exchange efficiency for the evaporator (130) can be significantly improved.

[0391] Meanwhile, although not shown, the first pipe (151) and the second pipe (152) may be extended through the open front surface of the air guide (173), and the third pipe (153) and the fourth pipe (154) may be extended through the rear wall (1732) of the air guide (173).

[0392] FIG. 15 illustrates the configuration of an air guide according to a second embodiment of the present invention.

[0393] The air guide (173) according to the second embodiment may further include a front wall (1734) and a right wall (1735) compared to the air guide (173) according to the first embodiment described above.

[0394] As described, the upper edge of the front wall (1734) of the air guide (173) according to the second embodiment can be integrally connected to the front edge of the upper wall (1731).

[0395] Additionally, the left edge of the front wall (1734) can be integrally connected to the front edge of the left wall (1733).

[0396] Additionally, the lower edge of the front wall (1734) may extend to a position where it contacts the bottom surface (91) of the base (90) and the bottom surface (1611) of the module base (160).

[0397] Meanwhile, as described, the front edge of the right wall (1735) of the air guide (173) according to the second embodiment can be integrally connected to the right edge of the front wall (1734).

[0398] Additionally, the rear edge of the right wall (1735) can be extended to contact the front end surface of the second duct section (1712) of the duct body (171).

[0399] Additionally, the bottom edge of the right wall (1735) can be extended to a position where it contacts the bottom surface (91) of the base (90).

[0400] As the front wall (1734) and the right wall (1735) are further added to form the second air guide (173), a closed passage can be formed inside the second air guide (173) in which only the inlet (1736) and the outlet are open.

[0401] At this time, the compressor (110) can be accommodated inside a closed passage formed by the second air guide (173) in its entirety.

[0402] Therefore, compared to the first embodiment, the proportion of airflow (F_in) flowing through the compressor (110) is significantly increased, so the cooling efficiency for the compressor (110) and the heat exchange efficiency for the evaporator (130) can be significantly increased.

[0403] Meanwhile, a plurality of openings formed in the left wall (1733) of the air guide (173) according to the second embodiment function as inlets (1736) of the closed passage.

[0404] As described, the left wall (1733) of the air guide (173) according to the second embodiment is arranged parallel to the left wall (94) of the base (90) and the main control panel (210).

[0405] Accordingly, the inlet (1736) of the air guide (173) according to the second embodiment is opened toward the main control panel (210).

[0406] Accordingly, the airflow (F_in) passing through the main control panel (210) can be introduced into the inlet (1736) along the right direction (Ri-direction).

[0407] The airflow (F_in) introduced in the right direction (Ri-direction) along the inlet (1736) can be switched so that its flow direction is directed toward the rear as it is introduced into the intake port (170a) of the heat exchange duct (170) after passing through the outer surface of the compressor (110).

[0408] Meanwhile, a filter mesh (1737) capable of filtering foreign substances such as dust may be disposed on the left wall (1733) of the air guide (173) according to the second embodiment in which the inlet (1736) is formed.

[0409] Therefore, foreign substances such as dust can be prevented from accumulating in the evaporator (130) or contamination of the condensate generated during the heat exchange process of the evaporator (130).

[0410] Meanwhile, although not shown, the first pipe (151) and the second pipe (152) may be extended through the front wall (1734) of the air guide (173), and the third pipe (153) and the fourth pipe (154) may be extended through the rear wall (1732) of the air guide (173).

[0411] Meanwhile, FIGS. 16 to 19 illustrate the configuration of an air guide (173) according to a third embodiment of the present invention.

[0412] The air guide (173) according to the third embodiment may be configured such that an inlet (1736) is formed in the front wall (1734) compared to the air guide (173) according to the first embodiment described above.

[0413] Accordingly, the inlet (1736) of the air guide (173) according to the third embodiment is opened toward the front.

[0414] As the inlet (1736) is formed in the front wall (1734) and opens toward the front, the first pipe (151) and the second pipe (152) can pass through the inlet (1736) and extend along the front-rear direction (FR direction).

[0415] Therefore, unlike the embodiments described above, the air guide (173) according to the third embodiment does not need to form a separate through hole in the front wall (1734) through which the first pipe (151) and the second pipe (152) pass.

[0416] In addition, unlike the embodiments described above, the rear wall (1732) of the air guide (173) according to the third embodiment can be moved to a position parallel to the rear surface of the first duct body (171) of the duct body (171).

[0417] Therefore, as shown in FIG. 17, the third pipe (153) and the fourth pipe (154) can be arranged so as to be entirely accommodated inside the closed passage.

[0418] That is, the space occupied by the third pipe (153) and the fourth pipe (154) can be secured inside the closed passage.

[0419] Therefore, unlike the embodiments described above, the air guide (173) according to the third embodiment does not need to form a separate through hole in the rear wall (1732) through which the third pipe (153) and the fourth pipe (154) pass.

[0420] Meanwhile, as the rear wall (1732) of the air guide (173) according to the third embodiment moves toward the rear, the closed passage can be extended toward the rear with respect to the intake port (170a) of the heat exchange duct (170).

[0421] Therefore, in addition to the effect of expanding the cross-sectional area of ​​the closed passage, the flow path of the airflow (F_in) in the closed passage inside the air guide (173) according to the third embodiment can be additionally diverted at the rear side of the compressor (110).

[0422] Therefore, the time the airflow (F_in) stays in the closed passage of the air guide (173) according to the third embodiment can be increased, and vortices or turbulence can be easily generated for the airflow (F_in).

[0423] Accordingly, the thermal efficiency of the airflow (F_in) to the compressor (110) can be further improved.

[0424] Meanwhile, FIG. 20 illustrates the configuration of an air guide (173) according to the fourth embodiment of the present invention.

[0425] The air guide (173) according to the fourth embodiment may include a blower fan (181) configured as a centrifugal fan compared to the configuration according to the above-described embodiment.

[0426] As described, the blower fan (181) which becomes a centrifugal fan can be arranged in a modular state, such as, for example, a Sirocco fan, with a blower motor (182).

[0427] As it is equipped with a centrifugal fan, the rotational axis of the blower fan (181) can be arranged along the left and right directions.

[0428] Additionally, the inlet of the blower module (180) can be opened toward the left direction (Le-direction).

[0429] In addition, as it is equipped with a centrifugal fan, unlike the embodiments described above, the blower module (180) can be formed such that its width in the front-to-back direction (FR direction) is much larger than its width in the up-and-down direction (UD direction) and its width in the left-and-right direction (Le-Ri direction).

[0430] Accordingly, as described, the blower module (180) according to the fourth embodiment can be arranged to be entirely accommodated inside the air guide (173).

[0431] In addition, as the blower module (180) is accommodated inside the air guide (173), unlike the previously described embodiments, the second duct section (1712), which constitutes the heat exchange duct (170) and serves to accommodate the blower module (180), may be omitted.

[0432] Accordingly, the heat exchange duct (170) according to the fourth embodiment can have its width in the front-rear direction (FR direction) reduced compared to the previously described embodiments.

[0433] At this time, the intake port (170a) of the heat exchange duct (170) can be formed on the front end surface of the third duct section (1713).

[0434] To prevent a decrease in airflow efficiency, the outlet of the airflow module (180) according to the fourth embodiment may be configured to be directly connected to and communicate with the intake port (170a) formed in the third duct section (1713) of the heat exchange duct (170).

[0435] 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

[0436] 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 disposed below the tub; a sump disposed between the base and the tub and storing washing water to be supplied to the tub; and a heat pump module disposed between the base and the tub and heating the washing water supplied to the sump; wherein 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 heat exchange duct that accommodates the evaporator internally and forms a passage through which an airflow to be heat exchanged with the evaporator flows. Claim 2 In claim 1, the heat pump module further comprises a blower module that generates an airflow of air to be heat-exchanged with the evaporator; and the heat exchange duct comprises a first duct section that accommodates the evaporator; and a second duct section that accommodates the blower module. Claim 3 In claim 2, the dishwasher in which the first duct section is positioned further rear than the second duct section. Claim 4 A dishwasher according to claim 2, wherein the cross-sectional area of ​​the first duct section is larger than the cross-sectional area of ​​the second duct section based on a direction perpendicular to the flow direction of the airflow. Claim 5 In claim 4, the heat exchange duct further comprises a third duct section disposed between the first duct section and the second duct section; a dishwasher. Claim 6 A dishwasher according to claim 5, wherein the cross-sectional area of ​​the front end of the third duct section is formed to be smaller than the cross-sectional area of ​​the rear end of the third duct section with respect to a direction perpendicular to the flow direction of the airflow. Claim 7 A dishwasher according to claim 5, wherein the cross-sectional area gradually increases as it progresses from the front end of the third duct section toward the rear end of the third duct section with respect to a direction perpendicular to the flow direction of the airflow. Claim 8 In claim 5, the third duct section is a dishwasher integrally connected to the first duct section and the second duct section, respectively. Claim 9 In claim 2, the blower module comprises: a blower fan that accelerates the air to generate an airflow; and a blower motor that generates rotational driving force for the blower fan; and the blower fan and the blower motor are each provided in a single unit. Claim 10 In claim 9, the blower fan is a dishwasher equipped with an axial fan. Claim 11 In claim 1, the heat exchange duct is positioned to be in close contact with the inner surface of the rear wall of the base. Claim 12 A dishwasher according to claim 11, wherein the rear wall of the base is provided with an outlet formed through the front and rear directions at a position where the heat exchange duct is placed in close contact, and the airflow of air that has been heat-exchanged with the evaporator passes through the outlet and is exhausted. Claim 13 In claim 11, the compressor is positioned further forward than the evaporator between the evaporator and one side wall of the base in a dishwasher. Claim 14 In claim 13, a dishwasher in which at least a portion of the compressor is positioned further forward than the intake port of the heat exchange duct based on the front-rear direction. Claim 15 In claim 14, the compressor is a dishwasher in which the volume of the portion positioned further forward than the intake port of the heat exchange duct is larger than the volume of the portion positioned further backward than the intake port of the heat exchange duct. Claim 16 A dishwasher according to claim 1, wherein the heat pump module further comprises an air guide that guides the flow direction of the airflow to be heat-exchanged with the evaporator so that the airflow is introduced into the intake port of the heat exchange duct at least partially through the compressor. Claim 17 In claim 16, the air guide comprises: an upper wall positioned at a location spaced upward from the compressor; and a rear wall positioned at a location spaced rearward from the compressor; wherein the upper wall is connected to the top of the heat exchange duct and the rear wall is connected to the outer circumference of the heat exchange duct. Claim 18 A dishwasher according to claim 16, further comprising a main control panel that controls the operation of the compressor by interrupting the power to be supplied to the compressor, wherein the air guide has an inlet into which an airflow to be heat-exchanged with the evaporator is introduced, and the inlet is open toward the main control panel. Claim 19 In claim 16, the air guide is provided with an inlet into which an airflow to be heat-exchanged with the evaporator is introduced, and the inlet is open toward the front of the dishwasher. Claim 20 In claim 16, the blower module comprises: a blower fan that accelerates the air to generate an airflow; and a blower motor that generates rotational driving force for the blower fan; wherein the blower fan is provided as a centrifugal fan and the dishwasher is housed inside the air guide.

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