Wastewater heat recovery mechanism and dish-washing machine

Abstract

The utility model relates to the technical field of cleaning equipment, and particularly discloses a waste water heat recovery mechanism and a dish-washing machine, and the waste water heat recovery mechanism comprises a washing water tank and a heat exchange water tank. The washing water tank is provided with an overflow pipe; the heat exchange water tank is provided with a wastewater discharge pipe and a wastewater inlet; the overflow pipe is inserted into the heat exchange water tank through the wastewater inlet, and the wastewater discharge pipe is lower than the wastewater inlet; a heat exchange pipeline is arranged in the heat exchange water tank, and the two ends of the heat exchange pipeline penetrate through the heat exchange water tank and are located outside the heat exchange water tank; a heat conduction column is arranged on the washing water tank, an insertion hole matched with the heat conduction column is formed in the heat exchange water tank, and one end of the heat conduction column is inserted into the heat exchange water tank through the insertion hole; the heat conduction column and the overflow pipe abut against the heat exchange pipeline. The waste water heat recovery mechanism is high in heat exchange efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to a wastewater heat recovery mechanism and a dishwasher. Background Art

[0002] Dishwashers are devices used to automatically wash tableware such as bowls, chopsticks, plates, dishes, knives, forks, etc. It reduces the labor intensity for cooks in restaurants, hotels, and canteens of government agencies, improves work efficiency, and promotes cleanliness and hygiene.

[0003] Patent application number 201020501049.2 discloses a commercial dishwasher equipped with a waste heat recovery device, which has an overflow hole at the upper end of a washing water tank, and a waste water inlet corresponding to the overflow hole at the upper side end of the housing of the waste heat recovery device. High-temperature waste water overflowing from the washing water tank flows into the housing through the waste water inlet, thereby heating the tap water in the bellows. However, when the waste water in the washing water tank does not overflow in large quantities, it is difficult to exchange heat with the tap water in the bellows. The bellows can only be heated when the waste water in the washing water tank overflows in large quantities. At the same time, when the water level in the housing of the waste heat recovery device is low, the heat exchange effect is also low, and the heat exchange effect is poor in the initial stage of cleaning. Therefore, it is necessary to make improvements. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a wastewater heat recovery mechanism with high heat exchange efficiency.

[0005] In order to solve the above problems, the utility model adopts the following technical solutions:

[0006] In a first aspect, a wastewater heat recovery mechanism is provided, comprising: a washing water tank and a water exchange water tank.

[0007] The wash water tank has an overflow pipe.

[0008] The heat exchange water tank is provided with a waste water discharge pipe and a waste water inlet.

[0009] The overflow pipe is inserted into the heat exchange water tank through the wastewater inlet, and the height of the wastewater discharge pipe is lower than the height of the wastewater inlet.

[0010] A heat exchange pipeline is arranged in the heat exchange water tank, and both ends of the heat exchange pipeline penetrate the heat exchange water tank and are located outside the heat exchange water tank.

[0011] The washing water tank is provided with a heat-conducting column, and the heat-exchanging water tank is provided with a socket matched with the heat-conducting column, and one end of the heat-conducting column is inserted into the heat-exchanging water tank through the socket.

[0012] The heat-conducting column and the overflow pipe are both in contact with the heat exchange pipeline.

[0013] In the wastewater heat recovery mechanism provided in at least one embodiment of the present disclosure, the washing water tank is fixedly connected to the heat exchange water tank.

[0014] The washing water tank is provided with a first sealing rubber ring, and the first sealing rubber ring is sandwiched between the washing water tank and the hot water exchange tank.

[0015] In the wastewater heat recovery mechanism provided in at least one embodiment of the present disclosure, a second sealing rubber ring and a third sealing rubber ring are provided on the washing water tank.

[0016] The heat-conducting column passes through the second sealing rubber ring.

[0017] The overflow pipe passes through the third sealing rubber ring.

[0018] The second sealing rubber ring and the third sealing rubber ring are sandwiched between the washing water tank and the hot water exchange tank.

[0019] In the wastewater heat recovery mechanism provided in at least one embodiment of the present disclosure, a first heat-conducting retaining frame is fixedly disposed in the water exchange water tank.

[0020] The first heat-conducting retainer is hollowed out and is fixedly connected to the heat exchange pipeline.

[0021] In the wastewater heat recovery mechanism provided in at least one embodiment of the present disclosure, a slag discharge port is provided at the bottom end of the washing water tank.

[0022] A sealing cover is detachably provided on the slag discharge port.

[0023] In the wastewater heat recovery mechanism provided by at least one embodiment of the present disclosure, the second sealing rubber ring and the third sealing rubber ring are both located in the area surrounded by the first sealing rubber ring.

[0024] In the wastewater heat recovery mechanism provided in at least one embodiment of the present disclosure, the other end of the heat-conducting column is located in the washing water tank.

[0025] In the wastewater heat recovery mechanism provided in at least one embodiment of the present disclosure, a second heat-conducting retaining frame is arranged in the washing water tank, and the second heat-conducting retaining frame is hollowed out.

[0026] The heat-conducting column is fixedly connected to the second heat-conducting retaining frame, and the heat-conducting column is perpendicular to the second heat-conducting retaining frame.

[0027] The washing water tank is fixedly connected to the second heat-conducting retaining frame.

[0028] In the wastewater heat recovery mechanism provided in at least one embodiment of the present disclosure, a filtering device is provided in the overflow pipe.

[0029] In a second aspect, a dishwasher is provided, comprising the above-mentioned wastewater heat recovery mechanism.

[0030] The beneficial effect of the utility model is that by providing the heat-conducting column, the heat of the waste water in the washing water tank can be transferred to the heat exchange pipeline without the waste water overflowing into the heat exchange water tank.

[0031] Since the heat transfer column and the overflow pipe are both in contact with the heat exchange pipeline, the heat transfer area can be increased, the heat exchange efficiency can be improved, and the problem of low heat exchange effect when the water level in the water exchange water tank is low can be alleviated. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 This is a three-dimensional exploded view of the washing water tank and the water exchange water tank in Example 1.

[0034] Figure 2 This is a schematic diagram of the internal structure of the water exchange tank in Example 1.

[0035] Figure 3 This is a schematic diagram of the structure of the washing water tank in Example 1.

[0036] Figure 4 This is a schematic diagram of the structure of the washing water tank in Example 2.

[0037] In the figure:

[0038] 10. Washing water tank; 11. Overflow pipe; 12. Heat conducting column; 13. First sealing rubber ring; 14. Second sealing rubber ring; 15. Third sealing rubber ring; 16. Sealing cover;

[0039] 20. Heat exchange water tank; 21. Waste water discharge pipe; 22. Waste water inlet; 23. Heat exchange pipeline; 24. Socket; 25. First heat conduction retaining frame. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the drawings in the embodiments. Obviously, the described embodiments are only a part of the embodiments, rather than all the embodiments.

[0041] Example 1

[0042] like Figures 1 to 3 As shown, this embodiment provides a wastewater heat recovery mechanism, including a washing water tank 10 and a heat exchange water tank 20.

[0043] Furthermore, the washing water tank 10 has an overflow pipe 11, and the heat exchange water tank 20 has a wastewater discharge pipe 21 and a wastewater inlet 22. The overflow pipe 11 is inserted into the heat exchange water tank 20 through the wastewater inlet 22, and the height of the wastewater discharge pipe 21 is lower than that of the wastewater inlet 22.

[0044] Furthermore, a heat exchange pipe 23 is provided in the water exchange tank 20. Both ends of the heat exchange pipe 23 pass through the water exchange tank 20 and are located outside the water exchange tank 20. The position where the heat exchange pipe 23 passes through the water exchange tank 20 is fixed and sealed by welding.

[0045] Furthermore, a heat-conducting column 12 is provided on the washing water tank 10, and a socket 24 matched with the heat-conducting column 12 is provided on the water-exchange water tank 20, and one end of the heat-conducting column 12 is inserted into the water-exchange water tank 20 through the socket 24. The heat-conducting column 12 and the overflow pipe 11 are both in contact with the heat-exchange pipeline 23. By providing the heat-conducting column, heat can be transferred to the heat-exchange pipeline 23, thereby increasing the heat transfer path.

[0046] In this embodiment, a plurality of heat-conducting pillars 12 are provided, and the plurality of heat-conducting pillars 12 are arranged at equal intervals from top to bottom.

[0047] In this embodiment, the washing water tank 10 and the hot water tank 20 are connected by bolts.

[0048] Furthermore, a first sealing rubber ring 13 is provided on the washing water tank 10 , and the first sealing rubber ring 13 is sandwiched between the washing water tank 10 and the hot water exchange tank 20 .

[0049] Furthermore, a second sealing rubber ring 14 and a third sealing rubber ring 15 are provided on the washing water tank 10 .

[0050] Furthermore, the heat conducting column 12 passes through the second sealing rubber ring 14; the overflow pipe 11 passes through the third sealing rubber ring 15; the second sealing rubber ring 14 and the third sealing rubber ring 15 are sandwiched between the washing water tank 10 and the hot water tank 20. The second sealing rubber ring 14 and the third sealing rubber ring 15 are both located in the area surrounded by the first sealing rubber ring 13.

[0051] By providing the first sealing rubber ring 13 , the second sealing rubber ring 14 and the third sealing rubber ring 15 , the sealing effect can be effectively improved and the leakage of wastewater can be reduced.

[0052] In this embodiment, a first heat-conducting retainer 25 is fixedly disposed in the water exchange tank 20 .

[0053] Furthermore, the first heat-conducting retaining frame 25 is hollowed out, and the first heat-conducting retaining frame 25 is fixedly connected to the heat exchange pipeline 23 .

[0054] By providing the first retaining frame, the stability of the heat exchange pipeline 23 can be effectively improved, and the heat exchange area can also be increased, which can play a role in improving the heat exchange effect.

[0055] In this embodiment, a slag discharge port (not shown) is provided at the bottom end of the washing water tank 10; a sealing cover 16 is detachably provided on the slag discharge port.

[0056] In this embodiment, the other end of the heat-conducting column 12 is located in the washing water tank 10. A second heat-conducting retaining frame (not shown) is arranged in the washing water tank 10, and the second heat-conducting retaining frame is hollowed out.

[0057] Furthermore, the heat-conducting column 12 is fixedly connected to the second heat-conducting retaining frame, and the heat-conducting column 12 is perpendicular to the second heat-conducting retaining frame; the washing water tank 10 is fixedly connected to the second heat-conducting retaining frame.

[0058] By providing the second retaining frame, the stability of the heat-conducting column 12 can be improved, and the heat exchange area can be increased, so that the heat of the wastewater can be better transferred to the heat-conducting column.

[0059] In this embodiment, a filtering device (not shown) is provided in the overflow pipe 11. By providing the filtering device, it is possible to effectively reduce the amount of slag entering the hot water exchange tank.

[0060] Example 2

[0061] like Figure 4 As shown, this embodiment discloses a wastewater heat recovery mechanism, which is substantially the same as the embodiment 1, except that: a plurality of heat-conducting columns 12 are provided, and the plurality of heat-conducting columns 12 are distributed in a rectangular array.

[0062] In addition, the utility model also provides a dishwasher, comprising the above-mentioned wastewater heat recovery mechanism.

[0063] Although the embodiments of the present application have been shown and described above, the scope of protection of the present invention is not limited thereto, and any changes or substitutions that are not conceivable through creative work should be included in the scope of protection of the present invention; unless explicitly stated, any element, action or instruction used in this document should not be interpreted as critical or necessary.

Claims

1. A wastewater heat recovery mechanism, characterized in that: include: a wash water tank having an overflow pipe; as well as A water exchange tank having a wastewater discharge pipe and a wastewater inlet; Wherein, the overflow pipe is inserted into the heat exchange water tank through the wastewater inlet, and the height of the wastewater discharge pipe is lower than the height of the wastewater inlet; A heat exchange pipeline is arranged in the water exchange tank, and both ends of the heat exchange pipeline penetrate the water exchange tank and are located outside the water exchange tank; The washing water tank is provided with a heat-conducting column, and the heat-exchanging water tank is provided with a socket matched with the heat-conducting column, and one end of the heat-conducting column is inserted into the heat-exchanging water tank through the socket; The heat-conducting column and the overflow pipe are both in contact with the heat exchange pipeline.

2. A wastewater heat recovery mechanism according to claim 1, characterized in that: The washing water tank is fixedly connected to the water exchange water tank; The washing water tank is provided with a first sealing rubber ring, and the first sealing rubber ring is sandwiched between the washing water tank and the hot water exchange tank.

3. A wastewater heat recovery mechanism according to claim 2, characterized in that: The washing water tank is provided with a second sealing rubber ring and a third sealing rubber ring; The heat-conducting column passes through the second sealing rubber ring; The overflow pipe passes through the third sealing rubber ring; The second sealing rubber ring and the third sealing rubber ring are sandwiched between the washing water tank and the hot water exchange tank.

4. A wastewater heat recovery mechanism according to claim 1, characterized in that: A first heat-conducting retainer is fixedly arranged in the water exchange water tank; The first heat-conducting retainer is hollowed out and is fixedly connected to the heat exchange pipeline.

5. The wastewater heat recovery mechanism according to claim 1, characterized in that: The bottom end of the washing water tank is provided with a slag discharge port; A sealing cover is detachably provided on the slag discharge port.

6. A wastewater heat recovery mechanism according to claim 3, characterized in that: The second sealing rubber ring and the third sealing rubber ring are both located in the area surrounded by the first sealing rubber ring.

7. A wastewater heat recovery mechanism according to claim 1, characterized in that: The other end of the heat-conducting column is located in the washing water tank.

8. A wastewater heat recovery mechanism according to claim 7, characterized in that: A second heat-conducting retainer is arranged in the washing water tank, and the second heat-conducting retainer is hollowed out; The heat-conducting column is fixedly connected to the second heat-conducting retaining frame, and the heat-conducting column is perpendicular to the second heat-conducting retaining frame; The washing water tank is fixedly connected to the second heat-conducting retaining frame.

9. A wastewater heat recovery mechanism according to claim 8, characterized in that: A filtering device is arranged in the overflow pipe.

10. A dishwasher, characterized in that: It comprises a wastewater heat recovery mechanism as described in any one of claims 1-9.

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