Dish washer

Abstract

A dishwasher according to one embodiment may include a tub for receiving dishes. The dishwasher may include a mounting portion disposed on the lower side of the tub. The dishwasher may include a compressor mounted on the mounting portion. The compressor may compress a refrigerant. The dishwasher may include a sump mounted on the mounting portion. Wash water may be stored in the sump. The dishwasher may include a wash pump mounted on the mounting portion. The wash pump may transport wash water. The dishwasher may include a fixing member coupled to the mounting portion. A compressor may be coupled to the fixing member. The fixing member may be formed of a vibration-absorbing material.

Description

Technology Field

[0001] The present invention relates to a dishwasher, and more specifically, to a dishwasher equipped with a heat pump system for heating washing water. Background Technology

[0002] The content described in this section merely provides background information regarding the present invention and does not constitute prior art.

[0003] A dishwasher is a device that uses detergent and washing water to clean dirt, such as food residue, stuck to dishes or cooking utensils.

[0004] A typical dishwasher includes a tub that provides a washing space, a rack provided within the tub for holding dishes, a spray arm that sprays wash water onto the rack, a sump that stores wash water, and a pump that supplies wash water stored in the sump to the spray arm.

[0005] The washing water used in a dishwasher may be at room temperature, but using high-temperature washing water can improve washing efficiency and reduce washing time. Therefore, washing or rinsing of dishes can be performed using high-temperature washing water in at least some of the processes during the operation of the dishwasher.

[0006] A heating device for heating the washing water may be equipped with, for example, an electric heater of the electric heating type, a heat pump system, etc.

[0007] Since heat pump systems are more energy-efficient than electric heaters, the adoption of heat pump systems for heating wash water in dishwashers has been increasing recently.

[0008] A heat pump system may be equipped with a compressor that compresses the refrigerant into a gaseous state of high temperature and high pressure. The compressor can operate most dynamically among the components constituting the heat pump system.

[0009] Therefore, a structure is required to support and secure the compressor so that it operates stably in the dishwasher.

[0010] In addition, rotating parts such as scrolls or blades in compressors can rotate at high speeds. Consequently, vibration and noise caused by vibration may occur in the compressor.

[0011] Vibration can adversely affect the compressor and other parts of the dishwasher. Additionally, noise generated by the compressor's vibration can cause discomfort to the user.

[0012] Therefore, a structure capable of reducing vibration and noise generated by the compressor is required.

[0013] Meanwhile, as the compressor operates, high-temperature heat may be generated. This high-temperature heat can be released to the outside, becoming useless waste heat. Therefore, a structure capable of recovering this waste heat is required to increase the energy efficiency of the heat pump system. The problem to be solved

[0014] The object of the present invention is to provide a dishwasher having a structure in which the compressor is supported and fixed so that it operates stably in the dishwasher.

[0015] In addition, the objective of the present invention is to provide a dishwasher having a structure capable of effectively reducing vibration and noise generated in the compressor.

[0016] In addition, the objective of the present invention is to provide a dishwasher having a structure capable of recovering high-temperature waste heat generated in a compressor.

[0017] 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 from 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

[0018] A dishwasher according to one embodiment may include a tub in which dishes are received.

[0019] The dishwasher may include a mounting portion positioned on the lower side of the tub.

[0020] The dishwasher may include a compressor mounted in the mounting section. The compressor can compress the refrigerant.

[0021] The dishwasher may include a sump mounted in the mounting section. Wash water may be stored in the sump.

[0022] The dishwasher may include a wash pump mounted on a mounting part. The wash pump can transport wash water.

[0023] The dishwasher may include a fixing member that is coupled to a mounting part. A compressor may be coupled to the fixing member. The fixing member may be formed of a vibration-absorbing material.

[0024] The mounting portion may include a coupling projection protruding from the upper surface of the mounting portion. A fixing member may be coupled to the coupling projection.

[0025] Protrusions and depressions may be formed alternately in the vertical direction on the fixed member.

[0026] Accordingly, the compressor may include a mounting projection that protrudes laterally from the lower portion. A hole into which a fixing member is inserted may be formed in the mounting projection.

[0027] The mounting protrusion can be mounted in the recess of the fixing member.

[0028] The connecting protrusions may be provided in at least three numbers. Each connecting protrusion may be spaced apart from one another and arranged radially.

[0029] The mounting portion may include a barrier wall positioned to surround a plurality of coupling protrusions. The barrier wall may protrude from the upper surface of the mounting portion.

[0030] The dishwasher may include a waste heat recovery pipe arranged to be wound multiple times on the outer surface of the compressor. Refrigerant may flow through the waste heat recovery pipe. The waste heat recovery pipe may absorb heat generated from the compressor.

[0031] A waste heat recovery pipe may be provided to connect an evaporator, where the refrigerant flows and evaporates, and a compressor. The waste heat recovery pipe may be positioned between the outlet of the evaporator and the inlet of the compressor.

[0032] The compressor may include a main body that compresses the refrigerant. The main body may form the external shape of the compressor.

[0033] The compressor may include a gas-liquid separator connected to the inlet of the main body. The gas-liquid separator can separate the liquid and gas contained in the refrigerant.

[0034] The waste heat recovery pipe may be provided to be connected to the gas-liquid separator.

[0035] The main body may be formed in a cylindrical shape and arranged so that its longitudinal direction is parallel to the vertical direction. The waste heat recovery pipe may be provided to be wound multiple times around the main body.

[0036] The dishwasher may include a vibration absorber positioned on the exterior of the main body. The vibration absorber may be coupled to the main body. The vibration absorber may be formed so that a waste heat recovery pipe passes through it. The vibration absorber may be formed of a vibration-absorbing material.

[0037] The waste heat recovery pipe can be wound multiple times around the main body. Each wound pipe of the waste heat recovery pipe can be arranged to be spaced apart from each other in the vertical direction. Effects of the invention

[0038] In the dishwasher according to the present invention, the compressor can be coupled to the mounting part via a fixing member provided with a vibration-absorbing material.

[0039] Due to this structure, almost all of the vibrations generated by the compressor during operation can be absorbed by the stationary member. Therefore, the amount of these vibrations propagated to the mounting part can be very small.

[0040] Therefore, the propagation of vibrations generated in the compressor to the mounting part is suppressed, and the impact applied to other parts provided in the mounting part due to vibration can be effectively suppressed.

[0041] In addition, this effectively suppresses noise generated by vibration of all parts placed in the mounting area. As a result of this noise suppression, convenience can be provided to the user.

[0042] In addition, in the dishwasher according to the present invention, the mounting protrusion of the compressor can be stably and conveniently mounted in the recess of the fixing member or removed from the recess.

[0043] Due to this structure, the compressor can be supported and fixed to the mounting part by a fixing member so that it operates stably in the dishwasher.

[0044] In addition, in the dishwasher according to the present invention, since the refrigerant is preheated in the waste heat recovery pipe and flows into the compressor, the compressor can reach the set outlet pressure and outlet temperature of the refrigerant with less work. Therefore, the waste heat recovery pipe can effectively increase the energy efficiency of the compressor.

[0045] In addition, the compressor can be cooled by a waste heat recovery pipe. Accordingly, overheating of the compressor can be effectively suppressed.

[0046] In addition, in the dishwasher according to the present invention, the vibration absorbing unit can absorb vibrations of the compressor body and the waste heat recovery pipe to effectively suppress vibrations and noise generation caused therefrom.

[0047] The vibration absorber can maintain the vertical spacing between each wound pipe of the waste heat recovery pipe. Therefore, it is possible to effectively prevent the spacing between each pipe from changing and becoming irregular, which would lead to a decrease in heat exchange efficiency between the main body and the waste heat recovery pipe.

[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 cross-sectional view of a dishwasher according to one embodiment. FIG. 2 is a drawing for explaining a part placed on a base in a dishwasher according to one embodiment. Figure 3 is a partial perspective view showing the state in which a compressor is mounted on the mounting part. Figure 4 is a partial perspective view showing the compressor separated from Figure 3. FIG. 5 is a perspective view showing a fixing member according to one embodiment. Figure 6 is a side view showing the area where the compressor is positioned in the mounting section. 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] 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.

[0054] 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.

[0055] In the specifications, terms such as "top," "bottom," and "side" are used to refer to parts or directions of the dishwasher as it is installed for general use.

[0056] FIG. 1 is a cross-sectional view of a dishwasher according to one embodiment. A dishwasher according to one embodiment may include a case (11) forming an exterior, a tub (12) in which dishes to be washed are received, a door (20) provided on the front of the tub (12) to open and close the tub (12), and a sump (100) provided on the lower side of the tub (12) in which washing water is stored.

[0057] Additionally, the dishwasher may include a plurality of spray arms (13, 14, 15) provided in a tub (12) for spraying washing water, a filter (110) provided in a sump (100) for filtering washing water sprayed from at least one of the plurality of spray arms (13, 14, 15) and recovered to the sump (100), a washing pump (150) for transporting washing water stored in the sump (100), and a switching valve (130) for flowing washing water transported by the washing pump (150) to at least one of the plurality of spray arms (13, 14, 15).

[0058] The tub (12) is formed in the shape of a cuboid with an open front, and a washing chamber (12a) can be formed inside. A communication hole is formed in the bottom (12b) of the tub (12) through which washing water flows into the sump (100). The washing chamber (12a) is provided with a plurality of racks (16, 17) for storing items to be washed. The plurality of racks (16, 17) may include a lower rack (16) positioned at the bottom of the washing chamber (12a) and an upper rack (17) positioned at the top. The lower rack (16) and the upper rack (17) are spaced apart vertically and can be slid out toward the front of the tub (12).

[0059] A plurality of spray arms (13, 14, 15) are arranged in an up-and-down direction. The plurality of spray arms (13, 14, 15) may include a lower spray arm (13) positioned at the bottom and spraying washing water from the bottom to the top toward the lower rack (16), an upper spray arm (14) positioned above the lower spray arm (13) and spraying washing water from the bottom to the top toward the upper rack (17), and a tower spray arm (15) positioned at the top of the washing room (12a) above the upper spray arm (14) and spraying washing water from the top to the bottom.

[0060] A plurality of spray arms (13, 14, 15) receive washing water from a washing pump (150) through a plurality of spray arm connecting channels (18, 19, 21). The plurality of spray arm connecting channels (18, 19, 21) may include a lower spray arm connecting channel (18) connected to a lower spray arm (13), an upper spray arm connecting channel (19) connected to an upper spray arm (14), and a tower spray arm connecting channel (21) connected to a tower spray arm (15).

[0061] The lower sandstone (13), upper sandstone (14) and tower sandstone (15) can each receive washing water from the washing pump (150) through the upper sandstone connecting channel (18), upper sandstone connecting channel (19), and tower sandstone connecting channel (21).

[0062] A sump (100) is positioned below the bottom (12b) of a tub (12) to collect wash water. A filter (110) can filter contaminants from the wash water moving from the tub (12) to the sump (100).

[0063] Washing water sprayed through multiple spray arms (13, 14, 15) falls to the bottom (12b) of the tub (12) along with contaminants adhering to the object to be washed. Accordingly, the dishware containing contaminants passes through a filter (110) arranged to communicate with the bottom (12b) of the tub (12), thereby filtering out the contaminants and allowing it to be stored in the sump (100).

[0064] During the washing operation, the washing water can wash dishes contained in the rack (16, 17) while circulating through the sump (100), spray arms (13, 14, 15), tub (12), and filter (110).

[0065] The washing pump (150) supplies washing water stored in the sump (100) to at least one of a plurality of spray arms (13, 14, 15). The washing pump (150) may include a washing motor that generates rotational force and an impeller that is rotated by the washing motor to transport washing water. The washing pump (150) may be connected to a switching valve (130) and a washing water supply path (180).

[0066] When the washing pump (150) is driven, the washing water stored in the sump (100) flows into the washing pump (150) through the collection channel (170) and can then be transferred to the switching valve (130) through the washing water supply channel (180).

[0067] The switching valve (130) selectively supplies washing water, which is transported by the washing pump (150), to at least one of the lower part sand arm (13), the upper part sand arm (14), and the top part sand arm (15). The switching valve (130) can selectively connect at least one of the washing water supply path (180) and the plurality of sand arm connection paths (18, 19, 21).

[0068] The sump (100) is connected to a water supply channel (23) through which washing water supplied from an external water source flows. The water supply channel (23) may be equipped with a water supply valve (22) that controls the washing water supplied from the external water source. The water supply valve (22) can supply washing water from the external water source to the sump (100). When the water supply valve (22) is opened, the washing water supplied from the external water source can flow into the sump (100) through the water supply channel (23).

[0069] A sump (100) may be connected to a drain channel (24) that drains washing water to the outside of the dishwasher. A drain pump (25) that drains washing water within the sump (100) through the drain channel (24) may be provided in the drain channel (24). When the drain pump (25) is operated, washing water stored in the sump (100) can be drained to the outside of the case (11) through the drain channel (24).

[0070] A heating device for heating the washing water may be provided inside the sump (100) or in the washing pump (150). The heating device may be provided, for example, as an electric heater, a heat pump system, etc.

[0071] In the embodiment, the washing water can be heated using a heat pump system. The heat pump system will be described first below.

[0072] A heat pump system is a system that pumps heat from a low-temperature environment to a high-temperature environment. At this time, such heat pumping can be implemented, for example, using a compressor (500). In an embodiment, a heat pump system can be implemented using a so-called two-phase flow refrigeration cycle, in which the temperature of the refrigerant is raised by compressing the two-phase flowing refrigerant in a gaseous state using a compressor (500).

[0073] A heat pump system carrying out a two-phase flow refrigeration cycle may include a compressor (500), a condenser (300), an expansion device, and an evaporator (600). Each of these components is connected to one another by piping, and as the refrigerant flows and circulates through these components, a phase change occurs and the temperature changes, allowing it to absorb heat from the surroundings or release heat to the surroundings.

[0074] The refrigerant may be introduced into the compressor (500) in a low-temperature gaseous state. In the compressor (500), the refrigerant may be compressed. At the outlet of the compressor (500), the refrigerant may be introduced into the condenser (300) in a superheated gaseous state at high temperature and high pressure.

[0075] In the condenser (300), the refrigerant and the washing water can flow separately. The refrigerant flows into the condenser (300) and exchanges heat with the washing water, and the washing water can be heated by receiving heat from the refrigerant.

[0076] The refrigerant can undergo a phase change from a superheated gaseous state to a saturated state where liquid and gas coexist while maintaining the same pressure in the condenser (300).

[0077] The refrigerant is introduced into the condenser (300) in a superheated state and transfers heat to the washing water, causing the temperature to drop. When it reaches a saturated state, the proportion of liquid can theoretically increase gradually at the same temperature. During this liquefaction process, the refrigerant releases a large amount of heat of liquefaction, and the washing water can be heated by receiving this heat.

[0078] The refrigerant may be introduced into the expansion device in a saturated liquid or super-cooled liquid state from the condenser (300). This expansion device may be equipped with, for example, an expansion valve or a capillary device.

[0079] The refrigerant can undergo adiabatic expansion in the expansion device, that is, theoretically, an expansion with the same enthalpy. During this expansion process, a portion of the refrigerant vaporizes, and consequently, the pressure of the refrigerant can be lowered. As a portion of the refrigerant vaporizes and releases heat of vaporization to the surroundings, the temperature of the entire refrigerant can be lowered. In other words, as the refrigerant passes through the expansion device, it can enter the evaporator (600) in a low-temperature and low-pressure state.

[0080] The refrigerant introduced into the evaporator (600) can gradually increase the proportion of gas while absorbing heat from the surroundings, which are at a relatively high temperature. In the evaporator (600), the proportion of gas can gradually increase while theoretically maintaining the same pressure and the same temperature.

[0081] The refrigerant discharged from the evaporator (600) may flow into the compressor (500) with some liquid present or slightly superheated. The refrigerant flowing into the compressor (500) may circulate through the compressor (500), condenser (300), expansion device, and evaporator (600) while repeating the process described above.

[0082] Typically, a refrigeration device is a device that utilizes the absorption of heat by a refrigerant in an evaporator (600). The heat pump system of the embodiment can utilize the heat released by the refrigerant in a condenser (300).

[0083] In a heat pump system, heat exchange occurs between a high-temperature refrigerant and a relatively low-temperature washing water in a condenser (300), and the washing water can be heated accordingly. The high-temperature washing water heated by the condenser (300) can wash or rinse dishes more easily compared to when it is at room temperature.

[0084] Meanwhile, this heat pump system does not need to always operate while the dishwasher is running. For example, when washing or rinsing with room temperature water, the compressor (500) is not operated, so that room temperature water can be sprayed onto the dishes without heating the washing water.

[0085] Even when the compressor (500) is stopped and the washing water is not heated, the washing water can pass through the condenser (300) and circulate throughout the dishwasher.

[0086] In another embodiment, by forming a bypass path that bypasses the condenser (300), the cleaning water can be diverted through the bypass path when the compressor (500) stops operating, thereby improving the performance of the condenser (300) and extending its lifespan.

[0087] FIG. 2 is a drawing for explaining the parts placed on the base (30) in a dishwasher according to one embodiment. The parts constituting the heat pump system may be placed, for example, on the lower side of the tub (12).

[0088] The dishwasher may include a base (30) provided on the lower side of the tub (12). A heat pump system and other devices for driving the dishwasher may be placed on the base (30). The base (30) forms a space on the lower side of the tub (12), and this space may become a machine room where various machine parts are placed.

[0089] The dishwasher may include a mounting portion (40) on which the condenser (300) is mounted. The mounting portion (40) may be placed on the base (30). The mounting portion (40) may be placed on the lower side of the tub (12).

[0090] The mounting portion (40) can generally be formed in a plate shape. Various parts can be attached to the upper surface of the mounting portion (40).

[0091] The mounting part (40) can be placed inside the base (30). The base (30) can be easily separated from the base (30). For example, the mounting part (40) can be mounted to the base (30) by a fastening mechanism. The mounting part (40) can be separated from the base (30) by releasing the fastening mechanism and sliding it as shown by the arrow in FIG. 2.

[0092] Alternatively, the mounting part (40) may be provided to be guided by a guide rail formed on the inner side of the base (30) and to slide from the base (30).

[0093] A condenser (300) can be placed in a mounting portion (40). A refrigerant and a cleaning water can flow separately in the condenser (300). The refrigerant can be condensed in the condenser (300). As the refrigerant condenses, it releases heat of liquefaction, and the cleaning water can be heated by the released heat of liquefaction.

[0094] Although not shown, the expansion valve can be placed in a suitable location on the mounting part (40). Since the expansion valve is small compared to other parts, it can be placed in a suitable space on the mounting part (40).

[0095] The dishwasher may include a water softening unit (41) that produces soft water. The water softening unit (41) may be mounted on the mounting unit (40). Soft water is water that has a very low content of minerals such as calcium and magnesium, or does not contain them. When washing with soft water, the washing efficiency of the dishes can be improved, and the lifespan of the dishes can also be increased. Therefore, it is necessary to wash with soft water as needed.

[0096] In the embodiment, washing water is introduced into the water softening unit (41), and after being softened using the water softening unit (41), it can be used for dishwashing. However, the water softening unit (41) is not an essential component of the dishwasher.

[0097] The water softening section (41) can be connected to the sump (100) via piping. Therefore, water flowing into the water softening section (41) can be softened by the water softening section (41). The softened water discharged from the water softening section (41) can flow into the sump (100) and be used for cleaning.

[0098] The dishwasher may include a sump (100) in which wash water is stored. The sump (100) may be mounted on a mounting portion (40). The sump (100) may be positioned on the lower side of a tub (12).

[0099] Washing water stored in the sump (100) can be flowed by the washing pump (150) to wash dishes contained in the tub (12) while circulating through the sump (100), washing pump (150), a plurality of spray arms (13, 14, 15), and tub (12).

[0100] Of course, the washing water can be heated by a heat pump system and sprayed from a plurality of spray arms (13, 14, 15) at a high temperature to wash or rinse dishes contained in the tub (12), thereby improving washing efficiency.

[0101] Additionally, a cleaning pump (150) may be mounted on the mounting portion (40). Additionally, a compressor (500) may be mounted on the mounting portion (40). The compressor (500) can compress refrigerant. Additionally, an evaporator (600) may be mounted on the mounting portion (40).

[0102] As described above, the compressor (500), condenser (300), expansion device, and evaporator (600) constituting the heat pump system are connected to each other by piping, and the refrigerant circulates through each component, undergoing a phase change and changing temperature and pressure.

[0103] Meanwhile, when the washing pump (150) is operated, the washing water flows sequentially through the washing pump (150), the condenser (300), the plurality of spray arms (13, 14, 15), the tub (12), and the sump (100), and then flows back into the washing pump (150) to circulate through the aforementioned components again.

[0104] The compressor (500) can compress the refrigerant to produce a gas in a high temperature and high pressure state. Therefore, the compressor (500) can operate most dynamically among the components constituting the heat pump system.

[0105] Therefore, a structure is required in which the compressor (500) is stably supported and fixed to the mounting part (40) so that it can operate stably in the dishwasher.

[0106] In addition, in the compressor (500), rotating parts such as scrolls or blades can rotate at high speed. Accordingly, vibration and noise caused by vibration may occur in the compressor (500).

[0107] Vibration can have an adverse effect on the compressor (500) and other parts equipped in the dishwasher. Additionally, noise generated by the vibration of the compressor (500) can cause discomfort to the user.

[0108] Therefore, a mounting part (40) fixing structure is required to reduce vibration and noise generated in the compressor (500).

[0109] Meanwhile, as the compressor (500) operates, high-temperature heat may be generated in the compressor (500). This high-temperature heat may be released to the outside and become useless waste heat. Therefore, in order to increase the energy efficiency of the heat pump system, a structure capable of recovering this waste heat is required.

[0110] This will be explained in detail below with reference to the drawings.

[0111] FIG. 3 is a partial perspective view showing the state in which the compressor (500) is mounted on the mounting part (40). FIG. 4 is a partial perspective view showing the state in which the compressor (500) is detached from FIG. 3.

[0112] The compressor (500) of the embodiment generally has a cylindrical shape and can be positioned vertically. Accordingly, the compressor (500) can be provided to be coupled with the mounting part (40) at the bottom.

[0113] The dishwasher may include a fixing member (700) that is coupled to a mounting part (40). A compressor (500) may be coupled to the fixing member (700). The fixing member (700) may be formed of a vibration-absorbing material.

[0114] For example, the fixed member (700) may be formed of a material including rubber, silicone, etc., which has excellent vibration absorption properties.

[0115] Accordingly, the compressor (500) can be coupled to the mounting part (40) via a fixed member (700) provided with a vibration-absorbing material.

[0116] Due to this structure, as the compressor (500) operates, almost all of the vibration generated in the compressor (500) can be absorbed by the fixed member (700). Therefore, the amount of such vibration propagated to the mounting part (40) can be very small.

[0117] Therefore, vibrations generated in the compressor (500) are suppressed from propagating to the mounting part (40), so that the impact on other parts provided in the mounting part (40) due to vibrations can be effectively suppressed.

[0118] In addition, this effectively suppresses the noise generated by vibration of all parts placed in the mounting part (40). As this noise is suppressed, convenience can be provided to the user.

[0119] FIG. 5 is a perspective view showing a fixed member (700) according to one embodiment.

[0120] The mounting portion (40) may include a coupling projection (40-1) protruding from the upper surface of the mounting portion (40). A fixing member (700) may be coupled to the coupling projection (40-1).

[0121] A fastening hole may be formed in the coupling projection (40-1). A coupling mechanism, such as a screw, may be coupled to the fastening hole. Meanwhile, a hole may be formed in the fixing member (700). Accordingly, the coupling mechanism may be inserted through the fixing member (700) and the fastening hole. As a result, the fixing member (700) can be firmly fixed to the coupling projection (40-1) by the coupling mechanism.

[0122] Referring to FIG. 5, the fixed member (700) may have protrusions (710) and recesses (720) alternately formed in the vertical direction. The protrusions (710) and recesses (720) may be provided in multiple numbers, and each protrusion (710) and recess (720) may be arranged alternately in the vertical direction of the dishwasher.

[0123] Accordingly, the compressor (500) may include a mounting projection (510) that protrudes laterally from the lower portion. A hole into which a fixing member (700) is inserted may be formed in the mounting projection (510).

[0124] For example, the mounting protrusion (510) may be formed integrally with the main body (520) that forms the outer shape of the compressor (500). The mounting protrusion (510) may be positioned at the bottom of the compressor (500). Accordingly, the mounting protrusion (510) may be positioned adjacent to the mounting part (40).

[0125] The mounting protrusion (510) can be mounted in the recess (720) of the fixing member (700). That is, the fixing member (700) can be fitted into the hole formed in the mounting protrusion (510).

[0126] The fixing member (700) may be formed of a material with good elastic deformation. Accordingly, the mounting protrusion (510) can be mounted to the fixing member (700) by a press fit. Therefore, the mounting protrusion (510) can be mounted to the fixing member (700) without a separate coupling tool and can also be removed from the fixing member (700).

[0127] The recesses (720) of the fixing member (700) may be provided in multiple numbers. Each recess (720) may be arranged to be spaced apart from each other in the vertical direction of the dishwasher. Accordingly, by fitting the mounting protrusion (510) of the compressor (500) into one of the recesses (720), the vertical height of the compressor (500) can be adjusted and fixed to the mounting part (40).

[0128] The coupling protrusions (40-1) may be provided in at least three numbers. Each coupling protrusion (40-1) may be spaced apart from one another and arranged radially. Of course, the mounting protrusions (510) may be provided in a number and shape corresponding to the plurality of coupling protrusions (40-1).

[0129] When there are two or fewer connecting protrusions (40-1), the compressor (500) may be tilted in a specific direction during operation of the compressor (500). In an embodiment, three or more connecting protrusions (40-1) may be provided, and they may be arranged radially.

[0130] Due to this structure, even if vibration occurs due to the operation of the compressor (500), the compressor (500) can be stably supported by three or more support points.

[0131] In an embodiment, as with the structure described above, the mounting protrusion (510) of the compressor (500) can be stably and conveniently mounted to the recess (720) of the fixing member (700) or removed from the recess (720).

[0132] Due to this structure, the compressor (500) can be supported and fixed to the mounting part (40) by a fixing member (700) so as to operate stably in the dishwasher.

[0133] The mounting portion (40) may include a barrier wall (40-2) arranged to surround a plurality of coupling protrusions (40-1). The barrier wall (40-2) may protrude from the upper surface of the mounting portion (40).

[0134] Referring to FIG. 4, the barrier wall (40-2) may be formed to surround a plurality of connecting protrusions (40-1) on the outer side of the connecting protrusion (40-1). For example, when three connecting protrusions (40-1) are provided, the barrier wall (40-2) may be provided in a generally triangular shape.

[0135] The barrier wall (40-2) can prevent washing water from accessing the compressor (500). Since the mounting part (40) is positioned below the tub (12) and the sump (100), washing water falling from the tub (12) or the sump (100) can accumulate on the upper surface.

[0136] When the cleaning water accumulated on the upper surface of the mounting part (40) approaches the compressor (500), the cleaning water flows into the compressor (500) and may have an adverse effect on the compressor (500).

[0137] Accordingly, the barrier wall (40-2) protruding from the upper surface of the mounting portion (40) can prevent washing water from approaching the compressor (500). Accordingly, the barrier wall (40-2) can protect the compressor (500) from washing water.

[0138] The dishwasher may include a waste heat recovery pipe (501) arranged to be wound multiple times on the outer surface of the compressor (500). A refrigerant may flow through the waste heat recovery pipe (501). The waste heat recovery pipe (501) may absorb heat generated from the compressor (500).

[0139] To increase the heat exchange efficiency between the compressor (500) and the waste heat recovery pipe (501), the waste heat recovery pipe (501) may be positioned so that at least a portion of it contacts the outer surface of the compressor (500).

[0140] A waste heat recovery pipe (501) may be provided to connect an evaporator (600) through which refrigerant flows and evaporates, and a compressor (500). The waste heat recovery pipe (501) may be positioned between the outlet of the evaporator (600) and the inlet of the compressor (500).

[0141] Accordingly, the refrigerant discharged from the evaporator (600) can flow into the compressor (500) via the waste heat recovery pipe (501). The low-temperature refrigerant discharged from the evaporator (600) can flow through the waste heat recovery pipe (501), be preheated by the heat generated in the compressor (500), and then flow into the compressor (500).

[0142] Therefore, since the refrigerant is preheated in the waste heat recovery pipe (501) and flows into the compressor (500), the compressor (500) can reach the set outlet pressure and outlet temperature of the refrigerant with less work. Accordingly, the waste heat recovery pipe (501) can effectively increase the energy efficiency of the compressor (500).

[0143] In addition, the compressor (500) can be cooled by the waste heat recovery pipe (501). Accordingly, overheating of the compressor (500) can be effectively suppressed.

[0144] When the compressor (500) overheats, the compressor (500) stops operating in order to protect the compressor (500). In the embodiment, the compressor (500) is cooled by the waste heat recovery pipe (501) so that overheating is suppressed, so the stoppage of operation due to overheating of the compressor (500) is eliminated or the number of stoppages of operation can be significantly reduced.

[0145] The main body (520) forming the outer shape of the compressor (500) may be formed of a metal material. In addition, the waste heat recovery pipe (501) may also be formed of a metal material with high thermal conductivity, such as copper or aluminum, to increase heat exchange efficiency.

[0146] FIG. 6 is a side view showing the area where the compressor (500) is placed in the mounting part (40).

[0147] The compressor (500) may include a main body (520) that compresses the refrigerant. The main body (520) may form the outer shape of the compressor (500).

[0148] The compressor (500) may include a gas-liquid separator (530) that communicates with the inlet of the main body (520). The gas-liquid separator (530) can separate the liquid and gas contained in the refrigerant.

[0149] The refrigerant discharged from the evaporator (600) can be introduced into the compressor (500) after passing through the gas-liquid separator (530). The gas-liquid separator (530) can separate the liquid contained in the refrigerant, i.e., the liquid refrigerant. Therefore, the liquid refrigerant entering the compressor (500) and impacting the rotating parts of the compressor (500) to damage these parts can be effectively suppressed.

[0150] Meanwhile, the gas-liquid separator (530) can separate not only the liquid refrigerant but also the liquid oil contained in the refrigerant.

[0151] The waste heat recovery pipe (501) may be provided to be connected to the gas-liquid separator (530). Accordingly, the refrigerant discharged from the evaporator (600) can sequentially flow to the waste heat recovery pipe (501), the gas-liquid separator (530), and the compressor (500).

[0152] Accordingly, liquid refrigerant or liquid oil remaining in the preheated refrigerant that has passed through the waste heat recovery pipe (501) can be separated in the gas-liquid separator (530) and prevented from flowing into the compressor (500).

[0153] Due to this structure, damage to the compressor (500) by liquid refrigerant or liquid oil can be effectively prevented.

[0154] The main body (520) may be formed in a cylindrical shape and arranged so that its longitudinal direction is parallel to the vertical direction. The waste heat recovery pipe (501) may be provided to be wound multiple times on the main body (520).

[0155] The higher the number of turns of the waste heat recovery pipe (501), the better the effect of preheating the refrigerant can be. However, the higher the number of turns of the waste heat recovery pipe (501), the higher the flow resistance of the refrigerant can be. Accordingly, the power consumption of the compressor (500) that forcibly circulates the refrigerant can be increased.

[0156] Taking these points into consideration, the number of windings for the main body (520) of the waste heat recovery pipe (501) can be appropriately selected.

[0157] Since the waste heat recovery pipe (501) is wound on the main body (520) of the compressor (500), vibrations generated from the compressor (500) can be transmitted to the waste heat recovery pipe (501). Accordingly, the waste heat recovery pipe (501) can vibrate.

[0158] If the waste heat recovery pipe (501) vibrates, the flow of the refrigerant flowing through the waste heat recovery pipe (501) becomes unstable, which can reduce the performance of the heat pump system.

[0159] Additionally, if the waste heat recovery pipe (501) vibrates, the position of the waste heat recovery pipe (501), which is wound multiple times, may be deformed. In this case, the heat recovery efficiency of the waste heat recovery pipe (501) may be reduced. Therefore, preparations for this are necessary. Accordingly, in the embodiment, a waste heat recovery pipe (501) may be provided.

[0160] The dishwasher may include a vibration absorbing part (502) disposed on the outside of the main body (520). The vibration absorbing part (502) may be coupled to the main body (520). The vibration absorbing part (502) may be formed so that a waste heat recovery pipe (501) passes through it.

[0161] The vibration absorbing part (502) may be formed of a vibration-absorbing material. For example, the vibration absorbing part (502) may be formed of a material including rubber, silicone, etc., which has excellent vibration-absorbing properties.

[0162] The vibration absorption unit (502) can absorb vibrations of the compressor (500) body (520) and the waste heat recovery pipe (501) to effectively suppress vibrations and noise generation caused by them.

[0163] The vibration absorbing part (502) can be attached to the surface of the compressor body (520) by, for example, adhesive.

[0164] The waste heat recovery pipe (501) can be wound multiple times on the main body (520). Each wound pipe of the waste heat recovery pipe (501) can be arranged to be spaced apart from each other in the vertical direction.

[0165] Each wound pipe of the waste heat recovery pipe (501) can be arranged to pass through the vibration absorption section (502). Accordingly, a spacing between each pipe can be maintained.

[0166] Accordingly, the vibration absorption unit (502) can maintain an upward and downward spacing between each wound pipe of the waste heat recovery pipe (501).

[0167] If the spacing between each pipe changes and becomes irregular due to vibration of the compressor (500), the total contact area between the main body (520) and the waste heat recovery pipe (501) may decrease. As a result, the heat exchange efficiency between the main body (520) and the waste heat recovery pipe (501) may be lower than the design value.

[0168] In the embodiment, the vibration absorbing member (502) can maintain the vertical spacing between each wound pipe of the waste heat recovery pipe (501). Therefore, it is possible to effectively prevent the spacing between each pipe from changing and becoming irregular, thereby preventing the heat exchange efficiency between the main body (520) and the waste heat recovery pipe (501) from decreasing.

[0169] 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 explaining 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

[0170] sump (100) Washing pump (150) Compressor (500) waste heat recovery pipe (501) Vibration absorption part (502) Mounting protrusion (510) main body (520) Gas-liquid separator (530)

Claims

Claim 1 A dishwasher comprising: a tub for accommodating dishes; a mounting portion disposed on the lower side of the tub; a compressor mounted on the mounting portion and compressing a refrigerant; and a fixing member coupled to the mounting portion and coupled to the compressor and formed of a vibration-absorbing material. Claim 2 A dishwasher according to claim 1, wherein the mounting portion includes a coupling projection protruding from the upper surface of the mounting portion and to which the fixing member is coupled, and the fixing member has protrusions and depressions alternately formed in the vertical direction. Claim 3 In paragraph 2, the compressor comprises a mounting projection that protrudes laterally from the lower portion and has a hole formed therein into which the fixing member is inserted, and the mounting projection is mounted in a recess of the fixing member, a dishwasher. Claim 4 A dishwasher according to paragraph 3, wherein the coupling protrusions are provided in at least three, and each of the coupling protrusions is spaced apart from each other and arranged radially. Claim 5 A dishwasher according to paragraph 2, wherein the mounting portion is arranged to surround a plurality of the coupling protrusions and includes a barrier wall protruding from the upper surface of the mounting portion. Claim 6 A dishwasher according to claim 1, comprising a waste heat recovery pipe arranged to be wound multiple times on the outer surface of the compressor, through which a refrigerant flows and which absorbs heat generated in the compressor. Claim 7 In paragraph 6, the above waste heat recovery pipe is configured to connect the compressor to an evaporator through which the refrigerant flows and evaporates. Claim 8 In claim 7, the waste heat recovery pipe is positioned between the outlet of the evaporator and the inlet of the compressor, in a dishwasher. Claim 9 A dishwasher according to claim 6, wherein the compressor comprises a main body for compressing a refrigerant; and a gas-liquid separator that is in communication with the inlet of the main body and separates the liquid and gas contained in the refrigerant, and the waste heat recovery pipe is provided to be in communication with the gas-liquid separator. Claim 10 A dishwasher according to claim 9, wherein the main body is formed in a cylindrical shape and arranged so that its longitudinal direction is parallel to the vertical direction, and the waste heat recovery pipe is configured to be wound multiple times around the main body. Claim 11 A dishwasher according to claim 9, comprising a vibration absorbing part disposed outside the main body, coupled to the main body, formed to allow the waste heat recovery pipe to pass through, and formed of a vibration-absorbing material. Claim 12 A dishwasher according to claim 11, wherein the waste heat recovery pipe is wound multiple times on the main body, and each pipe is arranged to be spaced apart from each other in the vertical direction, and each wound pipe of the waste heat recovery pipe is arranged to pass through the vibration absorbing part so as to maintain a spacing between each pipe. Claim 13 A dishwasher comprising: a tub for receiving dishes; a mounting portion disposed on the lower side of the tub; a sump mounted on the mounting portion and storing washing water; a washing pump mounted on the mounting portion and transporting washing water; a compressor mounted on the mounting portion and compressing a refrigerant; and a fixing member coupled to the mounting portion and coupled to the compressor and formed of a vibration-absorbing material. Claim 14 In claim 13, the above-mentioned mounting portion includes a coupling projection protruding from the upper surface of the above-mentioned mounting portion and to which the above-mentioned fixing member is coupled, and the above-mentioned compressor includes a mounting projection protruding laterally from the lower portion and having a hole formed therein into which the above-mentioned fixing member is inserted, a dishwasher. Claim 15 A dishwasher according to claim 14, wherein the fixing member has protrusions and depressions formed alternately in the vertical direction, and the mounting protrusion is mounted on the depression of the fixing member. Claim 16 A dishwasher according to claim 13, comprising a waste heat recovery pipe arranged to be wound multiple times on the outer surface of the compressor, through which a refrigerant flows and which absorbs heat generated in the compressor, wherein the waste heat recovery pipe is configured to connect the compressor to an evaporator through which the refrigerant flows and evaporates. Claim 17 A dishwasher according to claim 16, wherein the compressor comprises a main body for compressing a refrigerant; and a gas-liquid separator communicating with the inlet of the main body and separating the liquid and gas contained in the refrigerant, and wherein the waste heat recovery pipe is configured to be wound multiple times on the main body. Claim 18 A dishwasher according to claim 17, comprising a vibration absorbing part formed of a vibration-absorbing material, which is disposed on the outside of the main body, coupled to the main body, and formed so that the waste heat recovery pipe passes through it, wherein each wound pipe of the waste heat recovery pipe is disposed to pass through the vibration absorbing part and a spacing between each pipe is maintained.

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