Energy-saving heat exchange device for heat recovery of dish washing machine

Abstract

The heat recovery energy-saving heat exchange device comprises a heat exchanger shell with an opening in the top, a drainage inlet is formed in one side of the heat exchanger shell, a drainage outlet is formed in the other opposite side of the heat exchanger shell, the drainage inlet is connected with a drainage outlet of the dish-washing machine, and the drainage outlet is connected with an original drainage pipeline of the dish-washing machine. A plurality of parallel channel partition plates are vertically arranged in the heat exchanger shell so that an S-shaped drainage channel can be formed between the drainage inlet and the drainage outlet, and water inlet heat exchange pipes arranged along the drainage channel from head to tail are arranged in the drainage channel. The water inlet heat exchange pipe and the drainage channel are mutually independent and not communicated, the top of the water inlet heat exchange pipe is lower than the top of the channel partition plate, and the two ends of the water inlet heat exchange pipe enter and exit from the side wall of the heat exchanger shell respectively. The S-shaped drainage channel with the open top is separated in the heat exchanger shell through the channel partition plate, and accumulated objects generated when the drainage channel is applied can be conveniently cleaned.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste heat recovery and utilization of dishwashers, and particularly relates to a heat recovery and energy-saving heat exchange device for dishwashers. Background Art

[0002] With the increasing development of the national commercial economy, the scale and specialization of the catering industry have become more and more prominent. At the same time, with the promulgation of the public health regulations by the health department, the hygienic requirements for the catering industry have been continuously improved, resulting in a strong demand for commercial dishwashers from users. With the increasing attention of society to environmental protection and energy conservation and emission reduction, commercial dishwashers, which reduce water and energy consumption and have a reduced negative impact on the environment, have begun to receive increasing attention from society.

[0003] At present, commercial dishwashers have begun to adopt waste heat recovery technology to recover the waste heat of dishwashers, but there are problems such as insufficient heat exchange efficiency, easy blockage of the heat exchange device, and difficulty in cleaning. Content of the Utility Model

[0004] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a heat recovery and energy-saving heat exchange device for dishwashers.

[0005] To solve the above problems, the utility model adopts the following technical scheme:

[0006] A heat recovery and energy-saving heat exchange device for dishwashers includes a heat exchanger housing with an open top. One side of the heat exchanger housing is provided with a drainage inlet, and the opposite side is provided with a drainage outlet. The drainage inlet is connected to the drainage outlet of the dishwasher, and the drainage outlet is connected to the original drainage pipeline of the dishwasher. A plurality of mutually parallel channel partitions are vertically arranged in the heat exchanger housing to form an S-shaped drainage channel between the drainage inlet and the drainage outlet. An inlet heat exchange pipe is arranged in the drainage channel along the drainage channel from beginning to end. The inlet heat exchange pipe is independent and non-communication with the drainage channel, and the top height of the inlet heat exchange pipe is lower than the top height of the channel partition. Both ends of the inlet heat exchange pipe enter and exit from the side wall of the heat exchanger housing, and one end is an inlet, and the other end is an outlet. The inlet is connected to an external water supply pipe, and the outlet is connected to the water inlet of the dishwasher.

[0007] Preferably, the end of the inlet heat exchange pipe close to the drainage outlet is the inlet, and the end of the inlet heat exchange pipe close to the drainage inlet is the outlet.

[0008] Preferably, an overflow partition for partitioning the drainage channel is arranged at a position in the drainage channel before the drainage outlet. The inlet heat exchange pipe penetrates through the overflow partition. The top height of the overflow partition is higher than the top height of the inlet heat exchange pipe and lower than the top height of the channel partition.

[0009] Preferably, an upper cover is detachably connected to the top of the heat exchanger housing.

[0010] Advantages of the present utility model:

[0011] Compared with the prior art, the advantages of the present utility model are as follows:

[0012] In the present utility model, a channel partition plate separates an S-shaped drainage channel with an open top in the heat exchanger housing, facilitating the cleaning of accumulations generated in the drainage channel during application; and the drainage enters and exits the heat exchange device in a self-flow manner, thereby avoiding the risk of blockage caused by any water supply and drainage pressurization. Description of the drawings

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a top view of the present utility model. Detailed implementation manners

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0016] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper / lower end", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0017] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, terms such as "installed", "provided / sleeved with", "socketed", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0018] Please refer toFigure 1-2 , the present utility model provides a technical solution: a heat recovery and energy-saving heat exchange device for a dishwasher, including a heat exchanger housing 1 with an open top. One side of the heat exchanger housing 1 is provided with a drainage inlet 11, and the opposite side is provided with a drainage outlet 12. The drainage inlet 11 is connected to the drainage outlet of the dishwasher, and the drainage outlet 12 is connected to the original drainage pipeline of the dishwasher. A plurality of mutually parallel channel partitions 13 are vertically arranged in the heat exchanger housing 1 to form an S-shaped drainage channel 2 between the drainage inlet 11 and the drainage outlet 12. An inlet heat exchange tube 3 is arranged in the drainage channel 2 along the entire length of the drainage channel 2. The inlet heat exchange tube 3 is independent and non-communication with the drainage channel 2, and the top height of the inlet heat exchange tube 3 is lower than the top height of the channel partition 13. Both ends of the inlet heat exchange tube 3 enter and exit from the side wall of the heat exchanger housing 1, and one end is an inlet 31 and the other end is an outlet 32. The inlet 31 is connected to an external water supply pipe, and the outlet 32 is connected to the water inlet of the dishwasher.

[0019] The working process of the present utility model is as follows: The water supplied by the external water supply pipe enters the inlet 31 and flows through the inlet heat exchange tube 3, and then flows into the water inlet of the dishwasher from the outlet 32. The drainage of the dishwasher enters the drainage inlet 11 and flows through the drainage channel 2, and then flows out from the drainage outlet 12 into the original drainage pipeline of the dishwasher. Since the inlet heat exchange tube 3 is arranged along the entire length of the drainage channel 2 and is independent and non-communication with the drainage channel 2, and the top height of the inlet heat exchange tube 3 is lower than the top height of the channel partition 13, when the drainage channel 2 drains water, the inlet heat exchange tube 3 is immersed in the drained water of the drainage channel 2. The water supply and drainage of the dishwasher exchange heat in the inlet heat exchange tube 3 and the drainage channel 2, absorbing the heat in the drainage to increase its own temperature, reducing the working energy consumption of the dishwasher and reducing the operating cost.

[0020] The present utility model separates an S-shaped drainage channel 2 with an open top in the heat exchanger housing 1 through the channel partition 13, which is convenient for cleaning the accumulations generated during the application of the drainage channel 2; and the drainage enters and exits the heat exchange device in a self-flowing manner, thus avoiding the risk of blockage caused by any water supply and drainage pressurization.

[0021] Furthermore, the end of the inlet heat exchange tube 3 close to the drainage outlet 12 is the inlet 31, and the end of the inlet heat exchange tube 3 close to the drainage inlet 11 is the outlet 32, so that the water inlet and drainage adopt a countercurrent heat exchange method, greatly improving the heat exchange performance of the heat exchange device.

[0022] Furthermore, an overflow partition plate 4 for partitioning the drainage channel 2 is provided at a position in the drainage channel 2 before the drainage outlet 12. The water inlet heat exchange tube 3 penetrates through the overflow partition plate 4. The height of the top of the overflow partition plate 4 is higher than the height of the top of the water inlet heat exchange tube 3 and lower than the height of the top of the channel partition plate 13. When the drainage volume is small, the overflow partition plate 4 blocks the drainage until the drainage water level is higher than the top of the overflow partition plate 4 and then it will flow into the drainage outlet 12, ensuring that the water inlet heat exchange tube 3 is immersed in the drainage water for heat exchange with the drainage water.

[0023] Furthermore, a top cover is detachably connected to the top of the heat exchanger housing 1 to prevent the heat of the drainage water from dissipating from the top of the heat exchanger housing 1 and reducing the heat exchange effect, and the detachable top cover is convenient to open for cleaning the drainage channel 2.

[0024] Furthermore, the connection mode, position and direction of the heat exchanger drainage inlet 11 and the drainage outlet 12 can be appropriately changed according to the relative positions of the heat exchanger and the dishwasher. For example, the drainage inlet 11 can enter from above, and the drainage outlet 12 can discharge from the bottom below.

[0025] It should be noted that in this article, terms such as "channel" are general descriptive terms, which are only used to describe the passage of the media on both sides of the heat exchanger; relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation. An element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0026] In addition, the term "gravity flow" is only used for descriptive purposes, which means that the drainage water flows naturally by relying on its own height difference without any external force input. As long as the drainage water flows through the heat exchange device under the above conditions, it cannot be understood as a limitation to the present invention; the term "countercurrent" is only used for descriptive purposes, which means that the heat exchange mode between the drainage water and the inlet water is countercurrent to each other. This countercurrent can be a complete countercurrent or a partial countercurrent. As long as the inlet and drainage water have countercurrent heat exchange in structure, it cannot be understood as a limitation to the present invention.

[0027] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A heat recovery and energy-saving heat exchange device for a dishwasher, characterized in that, Comprising a heat exchanger housing (1) with an open top, a drain inlet (11) is provided on one side of the heat exchanger housing (1), and a drain outlet (12) is provided on the opposite side. The drain inlet (11) is connected to the drain outlet of the dishwasher, and the drain outlet (12) is connected to the original drain pipeline of the dishwasher. A plurality of mutually parallel channel partitions (13) are vertically arranged in the heat exchanger housing (1) to form an S-shaped drain channel (2) between the drain inlet (11) and the drain outlet (12). An inlet heat exchange tube (3) is arranged in the drain channel (2) along the entire length of the drain channel (2). The inlet heat exchange tube (3) is independent of and non-communicating with the drain channel (2), and the top height of the inlet heat exchange tube (3) is lower than the top height of the channel partition (13). Both ends of the inlet heat exchange tube (3) enter and exit from the side wall of the heat exchanger housing (1), and one end is an inlet (31), and the other end is an outlet (32). The inlet (31) is connected to an external water supply pipe, and the outlet (32) is connected to the water inlet of the dishwasher.

2. The heat recovery and energy-saving heat exchange device for a dishwasher according to claim 1, wherein, One end of the inlet heat exchange tube (3) close to the drain outlet (12) is the inlet (31), and one end of the inlet heat exchange tube (3) close to the drain inlet (11) is the outlet (32).

3. The heat recovery and energy-saving heat exchange device for a dishwasher according to claim 1, characterized in that, An overflow partition (4) for partitioning the drain channel (2) is provided at a position in the drain channel (2) before the drain outlet (12). The inlet heat exchange tube (3) passes through the overflow partition (4). The top height of the overflow partition (4) is higher than the top height of the inlet heat exchange tube (3) and lower than the top height of the channel partition (13).

4. The heat recovery and energy-saving heat exchange device for a dishwasher according to claim 1, characterized in that, A top cover is detachably connected to the top of the heat exchanger housing (1).

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