CN111685691B - Heat recovery device of dish washer - Google Patents
Heat recovery device of dish washer Download PDFInfo
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- CN111685691B CN111685691B CN201911063717.XA CN201911063717A CN111685691B CN 111685691 B CN111685691 B CN 111685691B CN 201911063717 A CN201911063717 A CN 201911063717A CN 111685691 B CN111685691 B CN 111685691B
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- wall
- cover plate
- wall portion
- water inlet
- recovery device
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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
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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
- A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
- A47L15/4217—Fittings for water supply, e.g. valves or plumbing means to connect to cold or warm water lines, aquastops
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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
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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
- A47L15/4291—Recovery arrangements, e.g. for the recovery of energy or water
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- 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
Abstract
The application discloses dish washer heat reclamation device includes: the main box body and the first cover plate; the main box body comprises a first matching part, a second wall part and a third wall part; the first matching part is opposite to the first cover plate and arranged at intervals, and the second wall part is arranged around the edge of the first matching part; the second wall part is connected between the first matching part and the first cover plate; the third wall part comprises a first end, a second end and an extension part, the first end and the second end are both connected with the second wall part, and the extension part is protruded towards the direction of the first cover plate relative to the first matching part; the extension part and the first matching part are enclosed to form a heat exchange tube cavity; the second wall part is provided with a first water inlet and a first water outlet, the heat exchange tube cavity is communicated with the first water inlet and the first water outlet, and the main box body and the first cover plate are enclosed to form a water storage cavity; the second wall part is also provided with a second water inlet and a second water outlet; the water storage cavity is communicated with the second water inlet and the second water outlet. The application provides a dishwasher heat recovery device simple structure, sealed effectual.
Description
Technical Field
The application relates to the technical field of heat exchange, in particular to a heat recovery device of a dish washing machine.
Background
The dish washer is a common device for washing dishes, and the heat recovery device arranged on the dish washer can save energy consumption to a certain extent and improve the energy efficiency grade of the dish washer. In the related art, a heat recovery apparatus of a dishwasher includes a water tank and a heat exchange pipe installed in the water tank for heat exchange with water in the water tank. After the heat exchange tube was put into the water tank, the water tank need be stretched out to the end of intaking and the play water end of heat exchange tube, and the position that the heat exchange tube is connected with the water tank needs to increase the sealing member and carries out seal assembly to and need a plurality of installing supports to fix a position the heat exchange tube in the water tank, the heat recovery device structure is complicated to be unfavorable for the miniaturization, and the heat exchange tube is poor at the sealed effect in connection position with the water tank, appears the problem of leaking easily.
Disclosure of Invention
The problem that this application will be solved lies in providing a simple structure, sealed effectual dish washer heat reclamation device.
The embodiment of the application provides a dish washer heat reclamation device, its characterized in that includes: the main box body and the first cover plate;
the main box body comprises a first matching part, a second wall part and a third wall part; the first matching part is opposite to the first cover plate and arranged at intervals, and the second wall part is arranged around the edge of the first matching part; the second wall part is connected between the first matching part and the first cover plate;
the third wall part comprises a first end, a second end and an extension part formed between the first end and the second end, the first end and the second end of the third wall part are both connected with the second wall part, the extension part is positioned on one side of the first matching part close to the first cover plate, the extension part is connected with the first matching part, at least part of the extension part is protruded towards the direction of the first cover plate relative to the first matching part, and the extension part and the first matching part are matched to form a heat exchange tube cavity; the second wall part is connected with the first cover plate in a sealing mode, the main box body and the first cover plate are matched to form a water storage cavity, and the heat exchange tube cavity and the water storage cavity are isolated through the third wall part to form two cavities which are not communicated with each other;
the second wall part is also provided with a first water inlet matched with the first end and a first water outlet matched with the second end, and the heat exchange tube cavity is communicated with the first water inlet and the first water outlet; the second wall part is also provided with a second water inlet and a second water outlet; the water storage cavity is communicated with the second water inlet and the second water outlet.
The application provides a dishwasher heat recovery device, the main tank body includes first cooperation portion, second wall portion and third wall portion, the extension of third wall portion forms the heat transfer lumen with the cooperation of first cooperation portion, and the main tank body forms the water storage chamber with the cooperation of first apron, because third wall portion and first cooperation portion are the structure of main tank body, also be the self structure formation of heat transfer lumen accessible main tank body, thereby be favorable to improving the leakproofness of heat transfer lumen, reduce the installation degree of difficulty that forms the structure of heat transfer lumen, the heat transfer lumen passes through third wall portion with the water storage chamber and keeps apart, also be favorable to improving the sealed effect between heat transfer lumen and the water storage chamber, make dishwasher heat recovery device simple structure compact, it is sealed effectual.
Drawings
FIG. 1 is a perspective view of a heat recovery device of a dishwasher according to an embodiment of the present application;
FIG. 2 is an exploded schematic view of one construction of the heat recovery device of the dishwasher shown in FIG. 1;
FIG. 3 is a schematic structural view of another structure of the heat recovery apparatus of the dishwasher shown in FIG. 1;
FIG. 4 is a schematic structural view of a first wall portion, a second wall portion and a third wall portion of the unitary structure shown in FIG. 3;
FIG. 5 is a schematic diagram of the structure shown in FIG. 4 from another perspective;
FIG. 6 is a schematic structural view of the second cover plate shown in FIG. 3;
FIG. 7 is a schematic view of a cross-sectional structure of a heat recovery unit of a dishwasher in a width direction;
FIG. 8 is an enlarged view of the structure of part A shown in FIG. 7;
FIG. 9 is a schematic structural diagram of the first cover plate shown in FIG. 3;
fig. 10 is an enlarged view of the structure of part B shown in fig. 7.
Detailed Description
In order to make the technical solutions of the present application better understood by those skilled in the art, the present application is further described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 10, the present application provides a heat recovery device 1 of a dishwasher, comprising: a main case 10 and a first cover 2. The main casing 10 includes a first fitting portion 101, a second wall portion 12, and a third wall portion 13.
The first fitting portion 101 is disposed opposite to and spaced apart from the first cover 2, and the second wall portion 12 is disposed around the edge of the first fitting portion 10. The second wall portion 12 is connected between the first fitting portion 101 and the first cover 2.
The third wall portion 13 includes a first end 131, a second end 132 and an extending portion 133 formed between the first end 131 and the second end 132, the first end 131 and the second end 132 of the third wall portion 13 are both connected to the second wall portion 12, the extending portion 133 is located on one side of the first fitting portion 101 close to the first cover plate 2, the extending portion 133 is connected to the first fitting portion 101, the extending portion 133 protrudes toward the first cover plate 2 relative to the first fitting portion 101, and the extending portion 133 and the first fitting portion 101 cooperate to form the heat exchange tube cavity 14. The second wall part 12 is connected with the first cover plate 2 in a sealing mode, the main box body 10 and the first cover plate 2 are matched to form a water storage cavity 15, and the heat exchange cavity 14 and the water storage cavity 15 are isolated through the third wall part 13 to form two cavities which are not communicated with each other.
The second wall 12 is provided with a first water inlet 121 matched with the first end 131 and a first water outlet 122 matched with the second end 132, and the heat exchange tube cavity 14 is communicated with the first water inlet 121 and the first water outlet 122. The second wall portion 12 is further provided with a second water inlet 123 and a second water outlet 124. The water storage cavity 15 is communicated with the second water inlet 123 and the second water outlet 124.
The main box 10 may be integrally manufactured, and the third wall portion 13 and the first matching portion 101 may be integrally formed, and of course, in order to reduce the processing difficulty, the main box 10 may also be split into a plurality of sub-structures to be processed respectively, and the plurality of sub-structures are finally hermetically connected to the integrated main box 10. The present application provides an alternative embodiment, and with reference to fig. 3, the first mating portion 101 comprises a first wall portion 11 and a second cover plate 3 connected together. The first wall portion 11 is parallel to the first cover plate 2, the second wall portion 12 surrounds the edge of the first wall portion 11 and is perpendicular to the first wall portion 11, the extending portion 133 protrudes from the first wall portion 11 in the direction of the first cover plate 2, a recess is formed on one side of the first wall portion 11 close to the second cover plate 3 by the extending portion 133, the second cover plate 3 closes the opening of the recess, and the extending portion 133 and the second cover plate 3 enclose the heat exchange tube cavity 14.
In one embodiment of the present application, the first water inlet 121 is used for communicating with the inner container of the dishwasher, and the first water outlet 122 is used for communicating with the drain pipeline of the dishwasher; the second water inlet 123 is used for communicating with the water outlet of the water softening device, and the second water outlet 124 is used for communicating with the inner container of the dishwasher.
The heat exchange tube cavity 14 can flow hot water, for example, the hot water in the main washing stage of the dishwasher can enter the heat exchange tube cavity 14 to exchange heat after the main washing stage is finished, the water storage cavity 15 can store cold water softened by the water softening device, for example, water to be used in the rinsing stage of the dishwasher is stored, and the hot water flowing in the heat exchange tube cavity 14 can transfer heat to the cold water in the water storage cavity 15, so that the cold water is heated, and the purpose of heat recycling is realized.
The heat recovery device 100 of the dishwasher may further include a sealing tube 8, the number of the sealing tubes 8 may be multiple, for example, a first sealing tube 81 is installed at the first water inlet 121, a second sealing tube 82 is also installed at the first water outlet 122, and the first sealing tube 81 and the second sealing tube 82 enhance the sealing performance of the first water inlet and the first water outlet. The third sealing pipe 83 is installed at the second water inlet 123, the fourth sealing pipe 84 is also installed at the second water outlet 124, and the third sealing pipe 83 and the fourth sealing pipe 84 enhance the sealing performance of the second water inlet and the second water outlet.
The first, second, third and fourth sealing tubes 81, 82, 83 and 84 are identical in shape and may include a nipple portion and a flange portion. The flange portion has an outer diameter larger than that of the nipple portion. The arrangement of the first sealing pipe 81, the second sealing pipe 82, the third sealing pipe 83 and the fourth sealing pipe 84 facilitates the installation and sealing of the first water inlet 121, the first water outlet 122, the second water inlet 123 and the second water outlet 124 with external pipelines, and the first sealing pipe 81, the second sealing pipe 82, the third sealing pipe 83 and the fourth sealing pipe 84 can be manufactured integrally with the second wall portion 12 or assembled separately.
As shown in fig. 3 and 4, the second wall portion 12 includes a top wall 1211, a bottom wall 1212, and two oppositely disposed side walls 1213. The top wall 1211 is located above the bottom wall 1212 in the height direction, and the side wall 1213 connects the top wall 1211 and the bottom wall 1212. The connecting positions of the side walls 1213 and the top wall 1211 and the side walls 1213 and the bottom wall 1212 are provided with round corners with smooth transition, and the shape enclosed by the top wall 1211, the bottom wall 1212 and the two oppositely arranged side walls 1213 is approximately round rectangle. The round angle is arranged, so that the scratch hidden danger to installation personnel during installation is reduced.
Diapire 1212 is located side by side and the interval to first water inlet 121, first delivery port 122, second water inlet 123 and second delivery port 124, is favorable to reducing the consumption of water pump, and first water inlet 121 and first delivery port 122 all are located between second water inlet 123 and the second delivery port 124, and first water inlet 121 is located between first delivery port 122 and the second delivery port 124, and first delivery port 122 is located between first water inlet 121 and the second delivery port 123. The purpose of this arrangement is to make the adjacent cold water and hot water flow in opposite directions, and to enhance the heat exchange to the maximum extent.
In this embodiment, cold water softened by a water softener (not shown) enters the second water inlet 123 of the heat recovery device 100 of the dishwasher, exchanges heat with hot water, and finally flows out through the second water outlet 124, and hot water used by a certain washing program of the dishwasher enters the first water inlet 121 and then is discharged through the first water outlet 122, so that countercurrent heat exchange can be realized, and the heat exchange efficiency is better.
Referring to fig. 3, the extension 133 includes a plurality of straight sections 33 and a plurality of circular arc transition sections 44, the circular arc transition sections 44 are connected between two adjacent straight sections 33, and the plurality of straight sections 33 and the plurality of circular arc transition sections 44 cooperate to allow at least a portion of the extension 133 to be distributed in a twisted manner. The heat exchange area of the heat exchange tube cavity is maximized.
In particular, as shown in figure 4, the plurality of straight sections 33 and the plurality of arc transitions 44 include a first straight section 331 extending vertically upward from the second end 132, a first arc transition 441 extending curvedly from the first straight section 331, a second straight section 332 extending horizontally from the first arc transition 441 toward the side of the second water inlet 123, a third straight section 333 extending vertically upward from the first end 131, a second arc transition 442 extending curvedly from the third straight section 333, a fourth straight section 334 extending horizontally from the second arc transition 442 toward the side of the second water outlet 124, a third arc transition 443 extending curvedly from the fourth straight section 334, a fifth straight section 335 extending vertically upward from the third arc transition 443, a fourth arc transition 444 extending curvedly from the fifth straight section 335, and a sixth straight section 336 extending horizontally from the fourth arc transition 444 toward the side of the second water inlet 123.
The plurality of straight sections 33 and the plurality of arc transition sections 44 further include a plurality of fifth arc transition sections 445 and a plurality of seventh straight sections 337 connected between the second straight section 332 and the sixth straight section 336, the fifth arc transition sections 445 and the seventh straight sections 337 are alternately connected, wherein the plurality of seventh straight sections 337 are arranged in parallel and at intervals in the horizontal direction, the fifth arc transition sections 445 are in a semicircular arc shape, and two fifth arc transition sections 445 connecting each seventh straight section 337 are staggered and have opposite arc opening directions.
With the arrangement structure, the third wall part 13 has a simple structure and high heat exchange efficiency. The fifth arc transition section 445 is in a semicircular arc shape, which is beneficial to bending and manufacturing the third wall part 13. The plurality of straight segments 33 and the plurality of rounded transitions 44 are generally rectangular or semi-circular in cross-section. The heat exchanger is convenient to process and manufacture, and is beneficial to increasing the heat exchange area of the heat exchange tube cavity.
As shown in fig. 4, 7, and 8, a rib 134 protruding toward the first cover plate 2 is formed on one side of the extension portion 133 close to the first cover plate 2, a recess is correspondingly formed on one side of the extension portion 133 away from the first cover plate 2 on the rib 134, the rib 134 is disposed obliquely relative to the bottom wall 1212, and a gap or an abutting arrangement is formed between the rib 134 and the first cover plate 2 toward the top surface of the first cover plate 2. The number of the ribbed tube 134 is plural, and the ribbed tubes 134 are arranged in parallel at intervals.
The rib tube 134 may have a thickness comparable to the thickness of the third wall portion 13. The rib pipe 134 is convex to the direction of first apron 2, and the inside cavity of rib pipe 134 can increase the vortex effect of the inside and outside water storage chamber 15 rivers of heat transfer lumen 14, increases fluid heat transfer coefficient to reinforcing heat transfer effect. The top surface of the ribbed tube 134 facing the first cover plate 2 is provided with a gap or an abutting arrangement with the first cover plate 2, so that the volume of the water storage cavity 15 can be fully utilized.
As shown in fig. 5, the extension 133 includes a second fitting part 1331 and a first sub-wall 1332 connected to each other. The second matching portion 1331 extends from the first wall portion 11 toward the first cover 2, the second matching portion 1331 includes a first step 1333 and a second step 1334 connected with each other, the second step 1334 is closer to the first cover 2 than the first step 1333, correspondingly, the first step 1333 is closer to the second cover 3 than the second step 1334, and the first sub-wall 1332 protrudes from the second step 1334 toward the first cover 2.
As shown in fig. 6 and 8, the second cover plate 3 includes a fourth wall portion 31 and a first boss 32 connected to each other, the fourth wall portion 31 is mounted on the first step 1333, and a side of the fourth wall portion 31 away from the third wall portion 13 is substantially flush with a side of the first wall portion 11 away from the first cover plate 2. The first boss 32 is provided on the fourth wall portion 31 on the side facing the third wall portion 13, and the first boss 32 is attached to the second step 1334. The first boss 32, the fourth wall portion 31 and the first sub-wall 1332 enclose the heat exchange tube cavity 14. The heat exchange lumen 14 can be referred to the schematic of the side sectional view of the dishwasher heat recovery device 1 illustrated in fig. 7.
As shown in fig. 9 and 10, the first cover plate 2 includes a fifth wall 21 and a second boss 22 connected to each other, the fifth wall 21 is parallel to the first wall 11, the second boss 22 protrudes from the fifth wall 21 toward the water storage cavity 15, the second boss 22 is close to the edge of the fifth wall 21, the second boss 22 is hermetically combined with the second wall 12, and the end surface of the second wall 12 facing the fifth wall 21 is hermetically combined with the fifth wall 21. The first wall 11, the second wall 12, the third wall 13, the fifth wall 21 and the second boss 22 enclose the water storage cavity 15. The water storage chamber 15 can be referred to in the illustration of the side sectional view of the dishwasher heat recovery device 1 illustrated in fig. 7.
The heat recovery device 1 of the dish washer is made of plastic polypropylene. The material is favorable for improving the heat exchange efficiency of water, and the plastic polypropylene material has the advantages of good temperature resistance, low cost, light weight, and multiple advantages of cost, product stability, weight and heat exchange efficiency.
The outer contour of the dishwasher heat recovery device 1 is approximately a cuboid, the length L of the dishwasher heat recovery device 1 is less than or equal to 550mm, the width W is less than or equal to 30mm, and the height H is less than or equal to 600 mm. In a possible embodiment, the dimension of the dishwasher heat recovery device 1 is 350 × 23 × 450mm, the wall thickness of the first cover plate 2, the second cover plate 3, the first wall portion 11, and the second wall portion 12 of the dishwasher heat recovery device 1 may be 2mm to 4mm, and the wall thickness of the third wall portion 13 is about 0.8mm to 2.5 mm.
The dishwasher heat recovery device 1 is generally placed on the side wall of the dishwasher, and the length and height of the dishwasher heat recovery device 1 are slightly smaller than the dimensions of the side wall of the dishwasher. The dishwasher also comprises a water pump, a valve part and a related pipeline which are arranged at the bottom to form a circulating system. During heat exchange, hot water flows inside the heat exchange tube cavity 14, and cold water flows inside the water storage cavity 15. After heat exchange, the temperature of the cold water rises, and after reaching the preset temperature through the action of electric heating, the cold water enters the dishwasher for washing.
In the process of prewashing, main washing, rinsing and drying of dish washing, hot water discharged in the main washing stage has higher heat, and the heat is effectively recovered, so that the water temperature in the next dish washing stage is increased, the energy consumed by power-saving heating can be saved to a certain extent, and the energy efficiency grade of the dish washing machine is improved. The dishwasher heat recovery device 1 provided herein can achieve the purpose of saving electric energy of the dishwasher by recovering heat of hot water in the main washing stage, and of course, the dishwasher heat recovery device 1 can also recover heat of hot water in other stages and even heat of hot water of other products.
Embodiments of the present application also disclose a heat recovery method of a dishwasher, which may be applied to the above heat recovery apparatus 1 of the dishwasher, the heat recovery method of the dishwasher including the steps of:
s1, main washing process: water in the water storage cavity 15 of the heat recovery device 1 of the dish washing machine enters the water tank, the temperature rises after electric heating, and tableware in the dish washing machine is washed after the preset temperature is reached.
S2, heat exchange process: the inner fork of the water storage cavity 15 is filled with new cold water again, after the main washing stage is finished, hot water in the water tank is not discharged, but enters the heat exchange tube cavity 14 under the action of the water pump after being filtered, and exchanges heat with the cold water stored in the water storage cavity 15.
S3, rinsing process: the hot water in the heat exchange tube cavity 14 is cooled and discharged out of the dish washing machine after heat exchange, the temperature of the cold water in the water storage cavity 15 rises after heat exchange, the cold water enters a water tank at the bottom of the dish washing machine, the cold water is heated up through electric heating, and after the cold water reaches a preset temperature, the cold water enters the dish washing machine to finish a hot rinsing process.
The heat recovery device 1 of the dishwasher provided by the application has the advantages of simple manufacturing process, lower price, tight arrangement of the main part extension part 133 of the third wall part 13 and large heat exchange area. The end face of one side of the third wall part 13 close to the second cover plate 3 is provided with the rib pipe 134, the rib pipe 134 can increase water flow disturbance and heat exchange coefficient, so that heat exchange amount is increased, an outer connecting pipe can be integrally manufactured with the second wall part 12, and the water leakage problem caused by poor sealing is avoided.
The heat recovery device of the dishwasher provided in the present application is described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are merely set forth to aid in understanding the core concepts of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Claims (10)
1. A dishwasher heat recovery device (1), characterized by comprising: a main box body (10) and a first cover plate (2);
the main box body (10) comprises a first matching part (101), a second wall part (12) and a third wall part (13); the first matching part (101) is opposite to the first cover plate (2) and is arranged at intervals, and the second wall part (12) is arranged around the edge of the first matching part (101); the second wall part (12) is connected between the first matching part (101) and the first cover plate (2);
the third wall portion (13) comprises a first end (131), a second end (132) and an extension portion (133) formed between the first end (131) and the second end (132), the first end (131) and the second end (132) of the third wall portion (13) are both connected with the second wall portion (12), the extension portion (133) is located on one side of the first matching portion (101) close to the first cover plate (2), the extension portion (133) is connected with the first matching portion (101), the extension portion (133) protrudes in the direction of the first cover plate (2) relative to the first matching portion (101), and the extension portion (133) and the first matching portion (101) are matched to form a heat exchange tube cavity (14) for flowing of liquid fluid; the second wall part (12) is hermetically connected with the first cover plate (2), the main box body (10) and the first cover plate (2) are matched to form a water storage cavity (15) for liquid fluid to flow, and the heat exchange tube cavity (14) and the water storage cavity (15) are isolated by the third wall part (13) to form two cavities which are not communicated with each other;
the second wall part (12) is further provided with a first water inlet (121) matched with the first end (131) and a first water outlet (122) matched with the second end (132), and the heat exchange tube cavity (14) is communicated with the first water inlet (121) and the first water outlet (122); the second wall part (12) is also provided with a second water inlet (123) and a second water outlet (124); the water storage cavity (15) is communicated with the second water inlet (123) and the second water outlet (124).
2. The dishwasher heat recovery device (1) according to claim 1, characterized in that the first mating portion (101) comprises a first wall portion (11) and a second cover plate (3) connected; the first wall portion (11), the second wall portion (12) and the third wall portion (13) are of an integral structure, the first wall portion (11) is parallel to the first cover plate (2), the second wall portion (12) surrounds the edge of the first wall portion (11) and is perpendicular to the first wall portion (11), the extending portion (133) protrudes from the first wall portion (11) to the first cover plate (2), a recess is formed in one side, close to the second cover plate (3), of the first wall portion (11) by the extending portion (133), the second cover plate (3) closes the opening of the recess, and the extending portion (133) and the second cover plate (3) enclose to form the heat exchange tube cavity (14).
3. A dishwasher heat recovery device (1) according to claim 2, characterized in that the second wall portion (12) comprises a top wall (1211), a bottom wall (1212) and two oppositely arranged side walls (1213); the top wall (1211) is located above the bottom wall (1212) in the height direction, and the side wall (1213) connects the top wall (1211) and the bottom wall (1212); the first water inlet (121), the first water outlet (122), the second water inlet (123) and the second water outlet (124) are arranged on the bottom wall (1212) side by side at intervals, the first water inlet (121) and the first water outlet (122) are both located between the second water inlet (123) and the second water outlet (124), the first water inlet (121) is located between the first water outlet (122) and the second water outlet (124), and the first water outlet (122) is located between the first water inlet (121) and the second water inlet (123).
4. The dishwasher heat recovery device (1) according to claim 3, characterized in that the extension (133) comprises a plurality of straight sections (33) and a plurality of circular arc transitions (44), the circular arc transitions (44) being connected between two adjacent straight sections (33), the plurality of straight sections (33) cooperating with the plurality of circular arc transitions (44) such that at least part of the extension (133) is distributed in a twisted manner.
5. The heat recovery device (1) of a dishwasher according to claim 4, characterized in that the plurality of straight sections (33) and the plurality of arc transitions (44) comprise a first straight section (331) extending vertically upward from the second end (132), a first arc transition (441) extending curvedly from the first straight section (331), a second straight section (332) extending horizontally from the first arc transition (441) to the side of the second water inlet (123), and a third straight section (333) extending vertically upward from the first end (131), a second arc transition (442) extending curvedly from the third straight section (333), a fourth straight section (334) extending horizontally from the second arc transition (442) to the side of the second water outlet (124), a third arc transition (443) extending curvedly from the fourth straight section (334), a fifth straight section (335) extending vertically upward from the third arc transition (443), and a third arc transition (335) extending vertically upward from the third arc transition (443), A fourth arc transition section (444) which is bent and extended from the fifth straight section (335), and a sixth straight section (336) which is horizontally extended from the fourth arc transition section (444) to one side of the second water inlet (123);
the plurality of straight sections (33) and the plurality of arc transition sections (44) further comprise a plurality of fifth arc transition sections (445) and a plurality of seventh straight sections (337) which are connected between the second straight section (332) and the sixth straight section (336), the fifth arc transition sections (445) and the seventh straight sections (337) are alternately connected, wherein the plurality of seventh straight sections (337) are arranged in parallel at intervals in the horizontal direction, the fifth arc transition sections (445) are in a semi-circular arc shape, and two fifth arc transition sections (445) connecting each seventh straight section (337) are staggered and have opposite arc opening directions.
6. The dishwasher heat recovery device (1) according to claim 4 or 5, characterized in that the plurality of straight sections (33) and the plurality of rounded transitions (44) are substantially rectangular or semi-circular in cross-section.
7. A dishwasher heat recovery device (1) according to claim 3, characterized in that the side of the extension (133) close to the first cover plate (2) is formed with a rib tube (134) protruding towards the first cover plate (2), the rib tube (134) is correspondingly formed with a recess at the side of the extension (133) away from the first cover plate (2), the rib tube (134) is arranged obliquely relative to the bottom wall (1212), and the rib tube (134) is arranged with a gap or in abutment towards the top surface of the first cover plate (2) and the first cover plate (2); the number of the rib pipes (134) is multiple, and the rib pipes (134) are arranged in parallel at intervals.
8. Dishwasher heat recovery device (1) according to claim 2, characterized in that the extension (133) comprises a second mating portion (1331) and a first sub-wall (1332) connected; the second matching part (1331) extends from the first wall part (11) to the first cover plate (2), the second matching part (1331) comprises a first step (1333) and a second step (1334) which are connected, the second step (1334) is closer to the first cover plate (2) than the first step (1333), and the first sub-wall (1332) is convex from the second step (1334) to the first cover plate (2);
the second cover plate (3) comprises a fourth wall part (31) and a first boss (32) which are connected, the fourth wall part (31) is installed on the first step (1333), and one side, away from the third wall part (13), of the fourth wall part (31) is approximately flush with one side, away from the first cover plate (2), of the first wall part (11); the first boss (32) is provided on a side of the fourth wall portion (31) facing the third wall portion (13), and the first boss (32) is attached to the second step (1334); the first boss (32), the fourth wall part (31) and the first sub-wall (1332) enclose the heat exchange tube cavity (14).
9. A dishwasher heat recovery device (1) according to claim 2, characterized in that the first cover plate (2) comprises a fifth wall portion (21) and a second boss (22) connected, the fifth wall portion (21) being parallel to the first wall portion (11), the second boss (22) protruding from the fifth wall portion (21) towards the water storage chamber (15), the second boss (22) being close to the edge of the fifth wall portion (21), the second boss (22) being sealingly joined with the second wall portion (12), the fifth wall portion (21) being sealingly joined with the end surface of the second wall portion (12) towards the fifth wall portion (21).
10. A dishwasher heat recovery device (1) according to claim 1, characterized in that the dishwasher heat recovery device (1) is of plastic polypropylene.
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| CN201911063717.XA CN111685691B (en) | 2019-11-04 | 2019-11-04 | Heat recovery device of dish washer |
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| CN201911063717.XA CN111685691B (en) | 2019-11-04 | 2019-11-04 | Heat recovery device of dish washer |
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| CN111685691B true CN111685691B (en) | 2022-01-28 |
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