Falling film type water cooler using ethylene glycol as secondary refrigerant

Abstract

The utility model discloses a falling film type water chiller utilizing ethylene glycol as a secondary refrigerant, which comprises an ethylene glycol water chiller unit, a heat preservation water tank structure is arranged in the ethylene glycol water chiller unit, the ethylene glycol water chiller unit is connected with a falling film type heat exchanger, and an ethylene glycol water return pipeline is arranged between the ethylene glycol water chiller unit and the falling film type heat exchanger. According to the utility model, ethylene glycol is used as a secondary refrigerant and is matched with the falling film type cooling-water machine, so that low-temperature cold water can be prepared, meanwhile, the production process requirements of the evaporation sheet can be reduced, the production efficiency is improved, the production cost is reduced, and the production cost is reduced. The problems that in the background technology, a falling film type water chilling unit has high requirements for the production technology of falling film type evaporation plates, the installation technology of the plates is complex, and maintenance is difficult are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of falling film chillers, in particular to a falling film chiller which uses ethylene glycol as a coolant. Background Art

[0002] Water chillers with shell and tube heat exchangers as evaporators cannot be used to produce low-temperature cold water of 0-2℃ in existing technology. Falling film chillers have high requirements on the production process of falling film evaporator plates, and the plate installation process is complicated and difficult to maintain. Therefore, a falling film chiller using ethylene glycol as the coolant is proposed. Utility Model Content

[0003] The purpose of the utility model is to overcome the problems in the prior art of falling film chillers that the production process requirements for falling film evaporation plates are high, the plate installation process is complicated, and maintenance is difficult. The utility model provides a falling film chiller that uses ethylene glycol as a coolant and can produce low-temperature cold water in conjunction with a falling film chiller, while reducing the production process requirements for evaporation plates.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a falling film chiller using ethylene glycol as a coolant, comprising an ethylene glycol chiller, an insulated water tank structure is provided in the ethylene glycol chiller, a falling film heat exchanger is connected to the ethylene glycol chiller, an ethylene glycol return pipe is provided between the ethylene glycol chiller and the falling film heat exchanger, a cold water tank is provided below the falling film heat exchanger, a circulating water inlet is provided at the upper end of the falling film heat exchanger, and the circulating water inlet is connected to the cold water tank.

[0005] Preferably, a second pipeline pump is provided in connection with the cold water tank between the circulating water.

[0006] Preferably, a first pipeline pump is provided on the ethylene glycol return pipeline.

[0007] The beneficial effects of the utility model are:

[0008] The utility model utilizes ethylene glycol as a coolant and cooperates with a falling film chiller to produce low-temperature cold water, while reducing the production process requirements for evaporation plates, thereby solving the problems in the background technology of falling film chillers having high production process requirements for falling film evaporation plates, complex plate installation process, and difficult maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The utility model is a schematic diagram of the overall structure of a falling film chiller which uses ethylene glycol as a coolant.

[0010] In the figure: 1. Ethylene glycol chiller; 2. Ethylene glycol return pipe; 3. Circulating water inlet; 4. Falling film heat exchanger; 5. Second pipeline pump; 6. Cold water tank; 7. First pipeline pump. DETAILED DESCRIPTION

[0011] The following is combined with Figure 1 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0012] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, specific orientation structure and operation, and therefore cannot be understood as a limitation on the present invention.

[0013] This embodiment provides a falling film chiller that uses ethylene glycol as a coolant, including an ethylene glycol chiller. The ethylene glycol chiller is provided with an insulated water tank structure. A falling film heat exchanger is connected to the ethylene glycol chiller. An ethylene glycol return pipe is provided between the ethylene glycol chiller and the falling film heat exchanger. A cold water tank is provided below the falling film heat exchanger. A circulating water inlet is provided at the upper end of the falling film heat exchanger. The circulating water inlet is connected to the cold water tank. A second pipeline pump is provided between the circulating water and the cold water tank. A first pipeline pump is provided on the ethylene glycol return pipe.

[0014] The working process of the falling film chiller using ethylene glycol as the coolant in this embodiment is as follows: a low-temperature ethylene glycol aqueous solution is produced by the ethylene glycol chiller, and then the low-temperature ethylene glycol aqueous solution is circulated in the falling film heat exchanger plate, and normal temperature water is circulated outside the falling film heat exchanger plate. The low-temperature ethylene glycol aqueous solution and normal temperature water are heat exchanged through the falling film heat exchanger by a pipeline pump to achieve the purpose of producing cold water.

[0015] The above content is merely an example and explanation of the structure of the present utility model. Technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the scope of protection of the present utility model.

Claims

1. A falling film chiller using ethylene glycol as a coolant, characterized in that: It includes an ethylene glycol chiller, which is equipped with an insulated water tank structure. The ethylene glycol chiller is connected to a falling film heat exchanger. An ethylene glycol return pipe is provided between the ethylene glycol chiller and the falling film heat exchanger. A cold water tank is provided below the falling film heat exchanger. A circulating water inlet is provided at the upper end of the falling film heat exchanger, and the circulating water inlet is connected to the cold water tank.

2. The falling film chiller using ethylene glycol as a coolant according to claim 1, characterized in that: A second pipeline pump is provided in connection with the cold water tank between the circulating water.

3. The falling film chiller using ethylene glycol as a coolant according to claim 1, characterized in that: The ethylene glycol return pipeline is provided with a first pipeline pump.

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