CN112022046A - Dish washer sleeve pipe heat transfer device and dish washer - Google Patents
Dish washer sleeve pipe heat transfer device and dish washer Download PDFInfo
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- CN112022046A CN112022046A CN201910482222.4A CN201910482222A CN112022046A CN 112022046 A CN112022046 A CN 112022046A CN 201910482222 A CN201910482222 A CN 201910482222A CN 112022046 A CN112022046 A CN 112022046A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 182
- 238000004851 dishwashing Methods 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims 1
- 238000005406 washing Methods 0.000 abstract description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 238000007599 discharging Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001580 bacterial effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241001631457 Cannula Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000004262 dental pulp cavity Anatomy 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4285—Water-heater arrangements
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
- A47L15/4225—Arrangements or adaption of recirculation or discharge pumps
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/06—Water heaters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Washing And Drying Of Tableware (AREA)
Abstract
The invention discloses a dish washer sleeve heat exchange device and a dish washer, the dish washer sleeve heat exchange device of the invention comprises: the water inlet end and/or the water outlet end of each sleeve are/is provided with a detachable first connecting structure or a plurality of sleeves, and different sleeves are sequentially communicated through the detachable first connecting structures to form a water flow channel. The sleeve heat exchange device of the dish washer adopts the mode that one or more independent sleeves are connected and assembled through the detachable connecting parts, so that foreign matters entering along with washing water in the sleeves can be conveniently cleaned and maintained, meanwhile, the positions of the sleeves can be arranged according to needs, the overall volume of the sleeve heat exchange device is reduced, and the occupied space is saved.
Description
Technical Field
The invention belongs to the field of dish washing machines, and particularly relates to a dish washing machine sleeve heat exchange device and a dish washing machine.
Background
The dish washer is used for automatically cleaning tableware such as dish, chopsticks, dish, knife and fork, and can be divided into two types of box type and conveying type according to the structure. It reduces the labor intensity for the cooking personnel in dining room, hotel and dining room of office, improves the working efficiency and promotes the cleanness and sanitation. Nowadays, various small dish washers have gradually entered ordinary households.
Some current dish washers use a heating pipe to supply heat to the dish washer, the heating pipe is arranged in a water tank at the bottom of an inner container, and when in washing, the heating pipe is used for heating, and circulating water of a circulating pump is used for washing dishes. However, this method consumes much power and does not dry thoroughly. Some dishwashers employ a heat pump system to heat the wash water. For example, the application number is 201420465616.1, the name is Chinese utility model patent of a heat pump type dish washing machine, the utility model provides a heat pump type dish washing machine, which comprises an inner container, a compressor, a condenser, a throttling device and an evaporator, wherein the condenser is arranged close to the outer wall of the inner container or wound on the outer wall of the inner container outside a water tank; the outlet of the compressor is connected with the inlet of the condenser, the outlet of the condenser is connected with the inlet of the evaporator through the throttling device, and the outlet of the evaporator is connected with the inlet of the compressor.
In the existing dish washer adopting the heat pump system, the condenser is generally a double-pipe heat exchanger, and the double-pipe heat exchanger is bent into a spiral shape. The heat exchanger is used for the dish washing machine and has the disadvantages that the occupied area is large, the space inside the spiral cannot be effectively utilized, and once the pollutants in the tableware enter the sleeve, the pollutants are not easy to discharge. Because whole double-pipe heat exchanger is formed for a long tube bending, can't clear up, in time adopt artifical maintenance also can't handle.
The present invention has been made in view of this situation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a dish washer sleeve heat exchange device and a dish washer.
In order to solve the technical problems, the invention adopts the technical scheme that:
the first purpose of the invention is to provide a sleeve heat exchange device of a dishwasher, which comprises:
a sleeve, the water inlet end and/or the water outlet end of the sleeve is provided with a detachable first connecting structure,
or a plurality of sleeves, different sleeves are communicated in sequence through the detachable first connecting structure to form a water flow channel.
In a further scheme, the sleeve comprises an outer pipe and an inner pipe, the inner pipe is arranged in the outer pipe, the end part of the inner pipe extends out of the outer pipe, the first connecting structure is arranged at the end part of the inner pipe of one sleeve, or the inner pipes of different sleeves are sequentially communicated through the first connecting structure;
preferably, the inner pipe is a straight pipe.
Further scheme, including many root canals cover pipes, first connection structure be the return bend, the both ends of return bend respectively with the end connection of two sheathed tube inner tubes, form the detachable kink between two sheathed tubes.
In a further scheme, the end part of the outer pipe is connected with the outer wall of the inner pipe in a sealing way;
the side part of the outer pipe of one sleeve is provided with a refrigerating medium inlet and a refrigerating medium outlet, or the outer pipes of a plurality of sleeves are sequentially communicated through a second connecting structure to form a refrigerating medium channel;
preferably, the end of the outer pipe is welded and sealed with the outer wall of the inner pipe.
In a further scheme, the second connecting structure is a connecting pipe, two ends of the connecting pipe are respectively communicated with the side walls of the outer pipes of the two sleeves, and areas between the inner pipes and the outer pipes of the multiple sleeves are sequentially communicated;
preferably, the communication position of the connecting pipe and the outer pipe is close to the end part of the outer pipe;
preferably, the connecting pipe is a straight pipe or an arc pipe;
in a further scheme, the central axes of the plurality of sleeves are arranged in parallel, and the central axes of the plurality of sleeves are positioned on the same plane or different planes;
preferably, the number of the sleeves is three, the three sleeves are arranged in parallel on the same plane, or the centers of the circles of the sections of the three sleeves form the vertex of a triangle;
preferably, the sleeve comprises a first sleeve, a second sleeve and a third sleeve, the third sleeve is positioned above the first sleeve, the circle center of the second sleeve is positioned on the central line of the connecting line of the circle centers of the sections of the first sleeve and the third sleeve, and the circle centers of the sections of the three sleeves form the vertex of an isosceles triangle;
preferably, one end of the inner pipe of the second sleeve is communicated with the end part of the first sleeve through an elbow pipe, the other end of the inner pipe of the second sleeve is communicated with the end part of the third sleeve through an elbow pipe, and the free end parts of the inner pipes of the first sleeve and the third sleeve form a water inlet and a water outlet respectively.
The positioning structure is connected with the sleeves, and the sleeves are positioned through the positioning structure and keep a certain distance;
preferably, the fixing structure comprises a fixing frame, through holes matched with the outer diameters of the sleeves are formed in the fixing frame, and the sleeves penetrate through the corresponding through holes to be connected with the fixing frame.
In a further scheme, a heat insulation structure is arranged on the periphery of the sleeve and/or among the sleeves to insulate the sleeves;
preferably, the heat insulation structure is a heat insulation layer made of heat insulation materials.
In a further scheme, a water inlet and a water outlet of the water flow channel are positioned on the same sleeve or different sleeves, and the water inlet and the water outlet are positioned at two ends of the sleeve.
The second purpose of the invention is to provide a dishwasher with the sleeve heat exchange device according to any one or combination of the above schemes, which comprises a water tank and a circulating pump, wherein the sleeve heat exchange device is respectively communicated with the water tank and the circulating pump.
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. the sleeve heat exchange device of the dish washer adopts the mode that one or more independent sleeves are connected and assembled through the detachable connecting parts, so that a user or a maintenance worker can clean foreign matters entering along with washing water in each sleeve at any time through the mode of detaching the connecting parts, the maintenance is convenient, the blockage in the sleeve is avoided, and the service life of the sleeve heat exchange device can be prolonged.
2. According to the sleeve heat exchange device of the dish washer, the independent sleeves are communicated through the detachable connecting parts, and the positions of the sleeves and the intervals among the sleeves can be arranged according to needs, so that the overall size of the sleeve heat exchange device is reduced, and the occupied space is saved.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic structural diagram of a double-pipe heat exchange device of a dishwasher according to the present invention;
FIG. 2 is another schematic structural diagram of the bushing heat exchanger of the dishwasher of the present invention;
FIG. 3 is a schematic sectional view of the heat exchanger of the casing of the dishwasher of the present invention;
FIG. 4 is a side view of a dishwasher according to the invention;
FIG. 5 is a schematic side view of the dishwasher of the present invention;
FIG. 6 is a schematic side view of a further side of the dishwasher of the present invention;
in the figure: the structure comprises a sleeve pipe 1, an outer pipe 2, an inner pipe 3, a first connecting structure 4, a second connecting structure 5, a water inlet 6, a water outlet 7, a refrigerating medium inlet 8, a refrigerating medium outlet 9, a fixing frame 10, a through hole 11, supporting legs 12, a first sleeve pipe 13, a second sleeve pipe 14 and a third sleeve pipe 15; 16 water flow channel, 17 refrigeration medium channel;
20 casing, 21 door body, 22 water tank, 23 circulating pump, 24 drain pump.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
As shown in fig. 1 to 3, the present embodiment provides a casing heat exchanging device of a dishwasher, comprising:
a sleeve 1, a first detachable connecting structure 4 is arranged at the water inlet end and/or the water outlet end of the sleeve 1,
or a plurality of sleeves 1, different sleeves 1 are communicated in sequence through the detachable first connecting structure 4 to form a water flow channel 16.
In this embodiment, each casing 1 is independently installed. According to the size of the model of the dish washer, the sleeve heat exchange device can comprise one sleeve 1, and also can be formed by sequentially communicating and combining two sleeves 1 and more than two sleeves 1 through the detachable first connecting structure 4. To a spiral sleeve pipe 1, the kink of sleeve pipe 1 deposits the foreign matter easily and can't clear up, and in this embodiment, first connection structure 4 between the independent sleeve pipe 1 can dismantle, so, the junction that deposits the clothing easily in the sleeve pipe 1 then can be easy dismantlement get off and wash, user or maintenance personal can clear up the foreign matter that each sleeve pipe 1 inside got into along with the washing water through the mode of dismantling adapting unit at any time, convenient maintenance, avoid blocking up in the sleeve pipe 1, can prolong sleeve pipe heat transfer device's life.
When the sleeve heat exchange device only comprises a sleeve 1, the sleeve 1 comprises an outer pipe 2 and an inner pipe 3 which are coaxially arranged, at least the inner pipe 3 of the sleeve 1 is linear, water flows in the inner pipe 3, a refrigerating medium flows between the inner pipe 3 and the outer pipe 2, the inner pipe 3 and the end part of the outer pipe 2 are connected in a sealing mode, a water inlet 6 and a water outlet 7 are formed in the inner pipe 3, and a refrigerating medium inlet 8 and a refrigerating medium outlet 9 are formed in the outer pipe 2. The water inlet 6 and the water outlet 7 of the inner tube 3 may be connected to other structures, such as a water tank 22, etc., through a detachable first connecting structure 4. The sleeve pipe 1 is linear, foreign matters are not easy to accumulate, and the connecting part of the sleeve pipe 1 and other structures can be detached, so that the sleeve pipe heat exchange device can be conveniently cleaned.
When the sleeve heat exchange device comprises two or more independent sleeves 1, the different sleeves 1 are sequentially communicated through the detachable first connecting structure 4 to form a longer water flow channel 16 in a combined manner, so that sufficient heat exchange between washing water and a refrigeration medium can be guaranteed, and the joints among the different sleeves 1 can be conveniently cleaned. The length and diameter of different sleeves 1 may be the same or different.
Each independent sleeve pipe 1 all includes outer tube 2 and inner tube 3, inner tube 3 sets up and stretches out in outer tube 2 at the inside tip of outer tube 2 and inner tube 3, communicates in proper order through first connection structure 4 between the inner tube 3 of different sleeve pipes 1. First connection structure 4 be the return bend, preferred soft rubber tube, the both ends of return bend respectively with the end connection of two sleeve pipes 1's inner tube 3, form the detachable kink between two sleeve pipes 1.
In this scheme, at least every sleeve pipe 1's inner tube 3 is the straight tube, and the smooth pipe of preferred avoids the foreign matter in the washing water to store up in sleeve pipe 1, and user or maintainer only need dismantle the return bend of two sleeve pipe 1 junctions and clear up can.
In the scheme, in order to realize the independence of the two channels of the water flow and the refrigerating medium, the end part of the outer pipe 2 and the outer wall of the inner pipe 3 are welded and sealed; the side parts of the outer pipes 2 of the plurality of sleeves 1 are sequentially communicated through the second connecting structure 5 to form a refrigerating medium channel 17; among the plurality of sleeves 1 forming the refrigerating medium channel 17, the sleeves 1 at the head end and the tail end are provided with a refrigerating medium inlet 8 and a refrigerating medium outlet 9, and other sleeves 1 are communicated through a second connecting structure 5.
The second connecting structure 5 is a connecting pipe, and may be made of a material that is not affected by a refrigerant, for example, the connecting pipe may be a copper pipe. The two ends of the connecting pipe are respectively communicated with the side walls of the outer pipes 2 of the two sleeves 1, so that the areas between the inner pipes 3 and the outer pipes 2 of the multiple sleeves 1 are sequentially communicated to form a refrigerating medium channel 17. The communication position of the connecting pipe and the outer pipe 2 is close to the end part of the outer pipe 2; the connecting pipe can be a straight pipe or an arc pipe.
Because the space in the dish washer is limited, the space occupied by the spiral sleeve 1 is large, and the space between the spirals cannot be effectively utilized, thereby causing the waste of space. Many bushings 1 in this embodiment are independent setting, consequently can arrange the position of each bushing 1 and the interval between the control sleeve 1 according to the particular case of dishwasher size to reduce bushing heat transfer device's whole volume, save occupation space.
Because many sleeve pipes 1 independent settings, connect through the return bend between the inner tube 3 of different sleeve pipes 1, many sleeve pipes 1's the mode of arranging then can have the multiple. The plurality of sleeves 1 can also be arranged in the front-back direction, the left-right direction, the parallel direction or a certain angle.
As a preferred embodiment, the central axes of the plurality of bushings 1 are parallel to each other, which takes up relatively little space. The central axes of the plurality of sleeves 1 may be located on the same plane or may be located on different planes. When the two sleeves 1 are included, the two sleeves 1 are parallel, namely, the two sleeves are arranged adjacently in parallel; when the number of the sleeves 1 is three or more, all the sleeves 1 may be arranged in parallel on the same plane, or in parallel on different planes.
As a specific mode, the sleeves 1 comprise three, the three sleeves 1 are arranged in parallel and arranged in parallel on the same plane, or the centers of the circles of the sections of the three sleeves 1 form the vertexes of a triangle; therefore, the whole volume of the sleeve heat exchange device can be reduced, and occupied space is saved.
Further, in order to fix the positions of the plurality of sleeves 1, in this embodiment, the sleeve heat exchange device further includes a positioning structure, the positioning structure is connected to each sleeve 1, and the sleeves 1 are positioned by the positioning structure and keep a certain distance therebetween. The positioning structure has the advantages that the positioning structure is used for fixing the multiple sleeves 1 at one position to form a whole, the whole occupied space is limited, the relative positions of the multiple sleeves can be limited, a certain distance is kept between the sleeves, and the phenomenon that the bent pipe connected between the sleeves is excessively bent to cause blockage is avoided.
The fixing structure comprises a fixing frame 10, through holes 11 matched with the outer diameters of the sleeves 1 are formed in the fixing frame 10, and the sleeves 1 penetrate through the corresponding through holes 11 to be connected with the fixing frame 10. The number of the through holes corresponds to the number of the sleeves, and the diameter of the through holes corresponds to the outer diameter of the sleeves. When the external diameters of the sleeves are the same, the diameters of the through holes are the same, the external diameters of different sleeves are different, and the diameters of the through holes are in one-to-one correspondence with the external diameters of the sleeves, so that the effect of positioning and fixing is achieved.
The bottom of the fixing frame 10 is also provided with supporting feet 12, and the supporting feet 12 are arranged perpendicular to the fixing frame 10 and supported on a plane below the sleeve heat exchange device. The plane here may be the bottom wall of the dishwasher housing 20, or may be other surfaces on which the sleeve heat exchanger is placed. The supporting legs 12 are plate-shaped and may be formed by bending the bottom of the fixing frame 10, or may be connected to the fixing frame 10 in an independent structure.
Further, in order to ensure the heat exchange efficiency of the sleeve heat exchange device, a heat insulation structure is arranged on the periphery of the sleeve 1 and/or among the sleeves 1 to insulate the sleeves 1; the heat insulation structure is a heat insulation layer made of heat insulation materials.
Furthermore, the water inlet 6 and the water outlet 7 of the water flow channel 16 are positioned on the same sleeve 1 or different sleeves 1, and the water inlet 6 and the water outlet 7 are positioned at two ends of the sleeve 1 so as to be connected with different devices in sufficient space to form a passage for washing water to enter the inner container of the dishwasher. For example, the water inlet 6 of the water channel 16 is connected with the water tank 22, the water outlet 7 is connected with the circulating pump 23, and when the circulating pump 23 is operated, the water in the water tank 22 enters the inner container of the dishwasher through the water channel 16 in the sleeve 1 and the circulating pump 23.
As a more specific embodiment, a double-tube heat exchanger device with three tubes 1 is illustrated:
the sleeve heat exchange device comprises a first sleeve 13, a second sleeve 14 and a third sleeve 15, wherein the first sleeve 13, the second sleeve 14 and the third sleeve 15 are straight pipes and are arranged in parallel. The third sleeve 15 is positioned above the first sleeve 13, the circle center of the second sleeve 14 is positioned on the central line of the connecting line of the circle centers of the cross sections of the first sleeve 13 and the third sleeve 15, and the circle centers of the cross sections of the three sleeves 1 form the vertex of an isosceles triangle. One end of the inner pipe of the second sleeve 14 is communicated with the end part of the inner pipe of the first sleeve 13 through a bent pipe, the other end is communicated with the end part of the inner pipe of the third sleeve 15 through a bent pipe, and the free end parts of the inner pipes of the first sleeve 13 and the third sleeve 15 respectively form a water inlet 6 and a water outlet 7, so that a water flow channel 16 is formed. The side wall of one end of the outer tube of the second sleeve 14 is communicated with the side wall of the outer tube of the first sleeve 13 through a copper tube, and the side wall of the other end is communicated with the side wall of the outer tube of the third sleeve 15 through a copper tube. The side wall of the outer pipe close to the water inlet 6 on the first sleeve 13 is provided with a refrigerating medium outlet 9, and the side wall of the outer pipe close to the water outlet 7 on the third sleeve 15 is provided with a refrigerating medium inlet 8, so that a refrigerating medium channel 17 is formed. The direction of the water flow is opposite to the flow direction of the refrigerant medium.
The vertically placed fixing frame 10 is provided with three through holes 11, wherein each through hole comprises a first through hole, a second through hole and a third through hole, the third through hole is positioned above the first through hole, the circle center of the second through hole is positioned on the central line of the connecting line of the circle centers of the cross sections of the first through hole and the third through hole, and the circle centers of the cross sections of the three through holes form the vertex of an isosceles triangle. The three sleeves 1 respectively penetrate through the corresponding through holes in a one-to-one correspondence mode and are fixed. An insulating layer is arranged between the three sleeves.
In this embodiment, the casing heat exchanger can be used as a condenser of a heat pump module of a dishwasher to heat washing water in a washing cycle and a drying cycle of the dishwasher.
Example two
As shown in fig. 4-6, the present embodiment provides a dishwasher, which includes a housing 20, a door 21 disposed on one side of the housing 20, a liner of the dishwasher disposed in the housing 20, a spraying arm disposed in the liner, and a water tank 22, a circulating pump 23 and a heat pump system disposed at the bottom of the liner. The heat pump system comprises a sleeve heat exchange device, and the sleeve heat exchange device in the embodiment is the sleeve heat exchange device in the first embodiment. The sleeve heat exchange device is respectively communicated with the water tank 22 and the circulating pump 23, and when the circulating pump 23 works, water in the water tank 22 sequentially passes through the water outlet of the water tank, the sleeve heat exchange device, the circulating pump and the spraying arm to enter the inner container for washing.
Specifically, when sleeve pipe heat transfer device only includes a sleeve pipe 1, sleeve pipe 1 includes outer tube 2 and the inner tube 3 of coaxial setting, and inner tube 3 is the linear type, supplies the water flow circulation among the inner tube 3, supplies the refrigerant circulation between inner tube 3 and the outer tube 2, seals between the tip of inner tube 3 and outer tube 2 to be connected, sets up water inlet 6 and delivery port 7 on the inner tube 3, sets up refrigerant import 8 and refrigerant export 9 on the outer tube 2.
The water inlet 6 of the sleeve 1 is communicated with the water outlet of the water tank, the water outlet 7 is communicated with the water inlet of the circulating pump, the height of the axis of the sleeve 1 is not lower than that of the water outlet of the water tank and not higher than that of the water inlet of the circulating pump, so that when the dishwasher works, the circulating pump 23 works, negative pressure is formed at the position of the water inlet of the circulating pump, washing water enters the sleeve 1 from the water tank 22 to exchange heat with a refrigerating medium, and the washing water is heated, enters the circulating pump 23 to be pressurized and then is conveyed. And circulating pump 23 stop work the time, rivers in inner bag and the sleeve pipe 1 can be according to the liquid level height of dish washer water, in refluence return water tank 22 under self gravity, are favorable to keeping the cleanliness in the sleeve pipe 1, avoid the bacterium to breed in the sleeve pipe 1.
When the sleeve heat exchange device comprises at least two sleeves 1, different sleeves 1 are sequentially communicated through the detachable first connecting structure 4, namely bent pipes, so that a water flow channel 16 is formed; along the water flow direction, the sleeve 1 positioned at the starting end of the water flow channel 16 is communicated with the water outlet of the water tank, and the height of the axis of the sleeve is not lower than that of the water outlet of the water tank; the sleeve 1 at the end of the water flow channel 16 is communicated with the water inlet of the circulating pump, and the height of the axis of the sleeve is not higher than that of the water inlet of the circulating pump.
In a further scheme, along the water flow direction, the heights of the axes of the plurality of sleeves 1 are gradually increased in sequence, the water inlet 6 of the water flow channel 16 is arranged on the sleeve 1 with the lowest axis position, and the water outlet 7 of the water flow channel 16 is arranged on the sleeve 1 with the highest axis position. So, on the rivers direction, rivers passageway 16 highly risees gradually, and when circulating pump 23 stop work, rivers among the rivers passageway 16 can flow back under self gravity, and the refluence is got back to basin 22, is favorable to keeping the cleanness in the sleeve pipe 1, reduces bacterial growing.
For each casing 1, the axis of each casing 1 may be parallel to the horizontal plane or may be inclined at an angle to the horizontal plane. When the sleeve is inclined, the height of the water inlet end is lower than that of the water outlet end, so that water flow backflow is facilitated.
In a further scheme, the sleeve 1 is located between the water tank 22 and the circulating pump 23 in the water flow direction, one end of the sleeve 1, which is provided with the water inlet 6 of the water flow channel 16, is close to the water tank 22, and one end of the sleeve 1, which is provided with the water outlet 7 of the water flow channel 16, is close to the circulating pump 23. Thus, both ends of the double-pipe heat exchanger are respectively provided with sufficient space to be connected with the water tank 22 and the circulating pump 23.
The water tank 22 and the circulating pump 23 may be disposed at both ends of the same side in the axial direction of the casing 1, may be disposed at both ends of different sides in the axial direction of the casing 1, or may be disposed at both ends of the end of the casing 1. No matter which mode, more spaces can be reserved at the two ends of the sleeve 1 where the water inlet 6 and the water outlet 7 of the water flow channel 16 are located, and the sleeve heat exchange device is favorably connected with and installed on the water tank and the circulating pump.
In a further scheme, the water tank 22 is located at the bottom inside the casing 20, and the sleeve heat exchanging device is located at the bottom inside the casing 20 and is disposed on a side of the water tank 22 facing the door body 21.
The water tank 22 is located at the bottom of the housing 20 below the inner container. The position between the water tank 22 and the door 21 of the dishwasher is defined as the front side of the water tank 22, the position between the water tank 22 and the back plate opposite to the door 21 of the dishwasher is defined as the rear side of the water tank 22, and the sleeve heat exchanger is located at the bottom of the casing 20 and is arranged on one side of the water tank 22 facing the door 21, namely, on the front side of the water tank 22.
In a further scheme, the water discharging pump 24 is further included, the water discharging pump 24 is communicated with the water tank 22, and the positions of the axes of all the sleeves 1 in the sleeve heat exchange device are higher than the position of the communication position of the water discharging pump 24 and the water tank 22, so that when water in the water tank 22 is discharged by the water discharging pump 24, the water in the sleeves 1 can flow backwards and is discharged by the water tank 22 and the water discharging pump 24, which is beneficial to keeping cleanness in the sleeves 1 and reducing bacterial growth.
The plurality of sleeves 1 in the embodiment each comprise an outer pipe 2 and an inner pipe 3, the inner pipe 3 is arranged inside the outer pipe 2, the end part of the inner pipe 3 extends out of the outer pipe 2, and the end part of the outer pipe 2 is connected with the outer wall of the inner pipe 3 in a sealing manner; the side parts of the outer pipes 2 of the plurality of sleeves 1 are sequentially communicated through connecting pipes to form a refrigerating medium channel 17; the ends of the inner pipes 3 of the plurality of sleeves 1 are sequentially communicated through bent pipes to form a water flow channel 16.
In order to fix the positions of the multiple sleeves, in this embodiment, the sleeve heat exchange device further includes a positioning structure, the positioning structure is connected to each sleeve, and the sleeves are positioned by the positioning structure and keep a certain distance therebetween. The positioning structure has the advantages that the positioning structure is used for fixing the multiple sleeves at one position to form a whole, the whole occupied space is limited, the relative positions of the multiple sleeves can be limited, a certain distance is kept between the sleeves, and the phenomenon that the bent pipe connected between the sleeves is excessively bent to cause blockage is avoided.
The fixing structure comprises a fixing frame 10, through holes 11 matched with the outer diameters of the sleeves 1 are formed in the fixing frame 10, and the sleeves 1 penetrate through the corresponding through holes 11 to be connected with the fixing frame 10. The number of the through holes corresponds to the number of the sleeves, and the diameter of the through holes corresponds to the outer diameter of the sleeves. When the external diameters of the sleeves are the same, the diameters of the through holes are the same, the external diameters of different sleeves are different, and the diameters of the through holes are in one-to-one correspondence with the external diameters of the sleeves, so that the effect of positioning and fixing is achieved.
As a more specific embodiment, a double-tube heat exchanger device with three tubes 1 is illustrated:
the sleeve heat exchange device comprises a first sleeve 13, a second sleeve 14 and a third sleeve 15, wherein the first sleeve 13, the second sleeve 14 and the third sleeve 15 are straight pipes and are arranged in parallel. The third sleeve 15 is positioned above the first sleeve 13, the circle center of the second sleeve 14 is positioned on the central line of the connecting line of the circle centers of the cross sections of the first sleeve 13 and the third sleeve 15, and the circle centers of the cross sections of the three sleeves 1 form the vertex of an isosceles triangle. One end of the inner tube of the second sleeve 14 is communicated with the end of the inner tube of the first sleeve 13 through a bent tube, the other end is communicated with the end of the inner tube of the third sleeve 15 through a bent tube, the free end of the inner tube of the first sleeve 13 forms a water inlet 6, and the free end of the inner tube of the third sleeve 15 forms a water outlet 7, so that a water flow channel 16 is formed. The side wall of one end of the outer tube of the second sleeve 14 is communicated with the side wall of the outer tube of the first sleeve 13 through a copper tube, and the side wall of the other end is communicated with the side wall of the outer tube of the third sleeve 15 through a copper tube. The side wall of the outer pipe close to the water inlet 6 on the first sleeve 13 is provided with a refrigerating medium outlet 9, and the side wall of the outer pipe close to the water outlet 7 on the third sleeve 15 is provided with a refrigerating medium inlet 8, so that a refrigerating medium channel 17 is formed. The three cannulas 1 are fixed and positioned by a fixing frame 10.
Therefore, the axial positions of the first sleeve 13, the second sleeve 14 and the third sleeve 15 are sequentially and gradually increased, the water inlet 6 is arranged on the first sleeve 13 with the lowest axial position, the water outlet 7 of the first sleeve 13 is connected with the water outlet of the water tank, and the axial position of the first sleeve 13 is not lower than that of the water outlet of the water tank; so that the water in the casing 1 can flow back to the water tank 22 of the dishwasher to be discharged when not in operation. The water outlet 7 is arranged on a third sleeve 15 with the highest axial position, the water outlet 7 of the third sleeve 15 is connected with the water inlet of the circulating pump, and the axial position of the third sleeve 15 is not higher than the water inlet of the circulating pump; thus, when the circulating pump 23 works, negative pressure is formed at the water inlet of the circulating pump, washing water enters the sleeve 1 from the water tank 22 to exchange heat with a refrigerating medium, is heated and enters the washing pump to be pressurized, and then is conveyed to the spraying arm to wash tableware.
Meanwhile, the position of the axis of the first casing 13 is not lower than the communication position of the drain pump 24 and the water tank 22, so that the water in the casing 1 can flow back to the water tank 22 and be discharged through the drain pump 24 when the water is drained.
In addition, the present embodiment also provides a control method of the dishwasher, including:
when the dish-washing machine works, the circulating pump 23 is started, and the washing water in the water tank 22 sequentially enters the inner container of the dish-washing machine through the sleeve heat exchange device and the circulating pump 23;
when the operation is stopped, the water in the inner container and the sleeve heat exchange device can flow back to the water tank 22;
when the dishwasher drains water, the drainage pump 24 works, and water in the inner container and the casing heat exchanger flows back to the water tank 22 and is drained by the drainage pump 24.
As a specific aspect, a control method of a dishwasher includes:
when the dishwasher works, the circulating pump 23 is started, washing water in the water tank 22 enters the inner pipe of the first sleeve 13 from the water inlet 6, and enters the inner container of the dishwasher through the inner pipe of the second sleeve 14, the inner pipe of the third sleeve 15, the circulating pump 23 and the spraying arm;
when the operation is stopped, water in the liner and the sleeve heat exchange device can flow back to the water tank 22 through the third sleeve 15, the second sleeve 14 and the first sleeve 13 in sequence under the action of self gravity;
when the dishwasher drains water, the drainage pump 24 works, and water in the inner container and the sleeve heat exchange device can flow back to the water tank 22 through the third sleeve 15, the second sleeve 14 and the first sleeve 13 in sequence and is drained by the drainage pump 24.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A dishwasher jacket heat exchange device, comprising:
a sleeve, the water inlet end and/or the water outlet end of the sleeve is provided with a detachable first connecting structure,
or a plurality of sleeves, different sleeves are communicated in sequence through the detachable first connecting structure to form a water flow channel.
2. The double-pipe heat exchange device of the dish washing machine as claimed in claim 1, wherein the double-pipe comprises an outer pipe and an inner pipe, the inner pipe is arranged inside the outer pipe, the end part of the inner pipe extends out of the outer pipe, the first connecting structure is arranged at the end part of the inner pipe of one double-pipe, or the inner pipes of different double-pipes are communicated in sequence through the first connecting structure;
preferably, the inner pipe is a straight pipe.
3. The heat exchanger of claim 2, comprising a plurality of sleeves, wherein the first connecting structure is a bent tube, two ends of the bent tube are respectively connected with the ends of the inner tubes of the two sleeves, and a detachable bending part is formed between the two sleeves.
4. The dishwasher bushing heat exchange device of claim 2, wherein the end of the outer tube is connected to the outer wall of the inner tube in a sealing manner;
the side part of the outer pipe of one sleeve is provided with a refrigerating medium inlet and a refrigerating medium outlet, or the outer pipes of a plurality of sleeves are sequentially communicated through a second connecting structure to form a refrigerating medium channel;
preferably, the end of the outer pipe is welded and sealed with the outer wall of the inner pipe.
5. The double-pipe heat exchange device of the dish washer of claim 4, wherein the second connecting structure is a connecting pipe, two ends of the connecting pipe are respectively communicated with the side walls of the outer pipes of the two double pipes, and the areas between the inner pipes and the outer pipes of the multiple double pipes are sequentially communicated;
preferably, the communication position of the connecting pipe and the outer pipe is close to the end part of the outer pipe;
preferably, the connecting pipe is a straight pipe or an arc pipe.
6. The heat exchange device of the bushing of the dishwasher of any one of claims 1 to 5, wherein the central axes of the plurality of bushings are arranged in parallel with each other, and the central axes of the plurality of bushings are located on the same plane or different planes;
preferably, the number of the sleeves is three, the three sleeves are arranged in parallel on the same plane, or the centers of the circles of the sections of the three sleeves form the vertex of a triangle;
preferably, the sleeve comprises a first sleeve, a second sleeve and a third sleeve, the third sleeve is positioned above the first sleeve, the circle center of the second sleeve is positioned on the central line of the connecting line of the circle centers of the sections of the first sleeve and the third sleeve, and the circle centers of the sections of the three sleeves form the vertex of an isosceles triangle;
preferably, one end of the inner pipe of the second sleeve is communicated with the end part of the first sleeve through an elbow pipe, the other end of the inner pipe of the second sleeve is communicated with the end part of the third sleeve through an elbow pipe, and the free end parts of the inner pipes of the first sleeve and the third sleeve form a water inlet and a water outlet respectively.
7. The dishwasher sleeve heat exchange device according to any one of claims 1 to 5, further comprising a positioning structure, wherein the positioning structure is connected with each sleeve, and the sleeves are positioned and kept at a certain interval by the positioning structure;
preferably, the fixing structure comprises a fixing frame, through holes matched with the outer diameters of the sleeves are formed in the fixing frame, and the sleeves penetrate through the corresponding through holes to be connected with the fixing frame.
8. The dishwasher bushing heat exchange device according to any one of claims 1 to 5, wherein a heat preservation structure is further provided at the outer periphery of the bushing and/or between the bushings to preserve heat of the bushing;
preferably, the heat insulation structure is a heat insulation layer made of heat insulation materials.
9. The heat exchanger of any one of claims 1 to 5, wherein the water inlet and the water outlet of the water flow channel are located on the same casing or different casings, and the water inlet and the water outlet are located at both ends of the casing.
10. A dishwasher having a double pipe heat exchanger according to any of claims 1 to 9, comprising a water tank and a circulation pump, the double pipe heat exchanger being in communication with the water tank and the circulation pump, respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910482222.4A CN112022046B (en) | 2019-06-04 | 2019-06-04 | Dish washer sleeve pipe heat transfer device and dish washer |
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| CN201910482222.4A CN112022046B (en) | 2019-06-04 | 2019-06-04 | Dish washer sleeve pipe heat transfer device and dish washer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112137546A (en) * | 2019-06-27 | 2020-12-29 | 青岛海尔洗碗机有限公司 | Dish washing machine |
| CN112137542A (en) * | 2019-06-27 | 2020-12-29 | 青岛海尔洗碗机有限公司 | Dish washing machine and control method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06201282A (en) * | 1993-12-06 | 1994-07-19 | Fujikura Ltd | Heat pipe type heat exchanger |
| EP0627607A2 (en) * | 1993-06-02 | 1994-12-07 | Wieland-Werke Ag | Steam-heated heat exchanger |
| CN206094547U (en) * | 2016-09-29 | 2017-04-12 | 中国铁道科学研究院节能环保劳卫研究所 | Many first medium heat cascade utilization's double -pipe heat exchanger |
| CN106852673A (en) * | 2015-12-08 | 2017-06-16 | 杭州三花家电热管理系统有限公司 | Heat-pump-type dish-washing machine |
| CN107981814A (en) * | 2017-11-29 | 2018-05-04 | 广东顺德拉鲁设计有限公司 | The integrated flow promoter system of dish-washing machine |
| CN109373641A (en) * | 2018-12-31 | 2019-02-22 | 柳州亚翔科技有限公司 | Condensing unit for automotive air-conditioning condenser |
| CN109381148A (en) * | 2017-08-11 | 2019-02-26 | 青岛海尔洗碗机有限公司 | A kind of heat-pump-type dish-washing machine and control method |
| CN109419470A (en) * | 2017-08-28 | 2019-03-05 | 青岛海尔洗碗机有限公司 | A kind of heat-pump-type dish washer control method and heat-pump-type dish-washing machine |
| CN109668319A (en) * | 2017-10-13 | 2019-04-23 | 浙江三花智能控制股份有限公司 | Dish-washing machine |
-
2019
- 2019-06-04 CN CN201910482222.4A patent/CN112022046B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0627607A2 (en) * | 1993-06-02 | 1994-12-07 | Wieland-Werke Ag | Steam-heated heat exchanger |
| JPH06201282A (en) * | 1993-12-06 | 1994-07-19 | Fujikura Ltd | Heat pipe type heat exchanger |
| CN106852673A (en) * | 2015-12-08 | 2017-06-16 | 杭州三花家电热管理系统有限公司 | Heat-pump-type dish-washing machine |
| CN206094547U (en) * | 2016-09-29 | 2017-04-12 | 中国铁道科学研究院节能环保劳卫研究所 | Many first medium heat cascade utilization's double -pipe heat exchanger |
| CN109381148A (en) * | 2017-08-11 | 2019-02-26 | 青岛海尔洗碗机有限公司 | A kind of heat-pump-type dish-washing machine and control method |
| CN109419470A (en) * | 2017-08-28 | 2019-03-05 | 青岛海尔洗碗机有限公司 | A kind of heat-pump-type dish washer control method and heat-pump-type dish-washing machine |
| CN109668319A (en) * | 2017-10-13 | 2019-04-23 | 浙江三花智能控制股份有限公司 | Dish-washing machine |
| CN107981814A (en) * | 2017-11-29 | 2018-05-04 | 广东顺德拉鲁设计有限公司 | The integrated flow promoter system of dish-washing machine |
| CN109373641A (en) * | 2018-12-31 | 2019-02-22 | 柳州亚翔科技有限公司 | Condensing unit for automotive air-conditioning condenser |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112137546A (en) * | 2019-06-27 | 2020-12-29 | 青岛海尔洗碗机有限公司 | Dish washing machine |
| CN112137542A (en) * | 2019-06-27 | 2020-12-29 | 青岛海尔洗碗机有限公司 | Dish washing machine and control method |
| CN112137546B (en) * | 2019-06-27 | 2024-07-30 | 青岛海尔洗碗机有限公司 | Dish washer |
| CN112137542B (en) * | 2019-06-27 | 2024-07-30 | 青岛海尔洗碗机有限公司 | Dish washer and control method |
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| CN112022046B (en) | 2024-09-13 |
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