Cooling water cooler capable of supplementing residual cooling capacity

Abstract

The utility model discloses a residual cold supplementing and cooling water chiller which comprises a water tank, a compressor, a shell and tube condenser, a circulating pump and a plate heat exchanger, an evaporator is arranged in the water tank, and the evaporator, the compressor and the shell and tube condenser are communicated through refrigerant pipes to form a refrigerating loop. Two cooling water ports of the shell and tube condenser are communicated with a cooling water inlet pipe and a cooling water outlet pipe respectively, a water outlet of the water tank is communicated with a circulating pump, a water outlet of the circulating pump is communicated with a chilled water outlet pipe, a first heat exchange flow channel and a second heat exchange flow channel are arranged in the plate heat exchanger, and a water inlet of the first heat exchange flow channel is communicated with a chilled water return pipe. A water inlet of the second heat exchange flow channel is communicated with a cooling water inlet pipe through a first water pipe, and a water outlet of the second heat exchange flow channel is communicated with a cooling water outlet pipe through a second water pipe. The air conditioner can make full use of residual cooling capacity and has the supplementary cooling function.

Description

Technical Field

[0001] This utility model relates to chillers, and more particularly to a chiller for supplementing cooling with residual cooling capacity. Background Technology

[0002] Chillers are used to provide chilled water to industrial equipment, thereby achieving stable temperature control. Existing chillers operate on the principle of a refrigeration mechanism composed of a compressor, evaporator, and shell-and-tube condenser. By cooling the water in the tank, chilled water is continuously supplied to the industrial equipment. Simultaneously, a cooling loop dissipates heat from the shell-and-tube condenser. The heat exchange efficiency of this cooling loop directly affects the operating efficiency of the refrigeration mechanism. Current technology relies solely on circulating coolant for heat exchange and cooling of the shell-and-tube condenser, resulting in low heat exchange efficiency and requiring the compressor to operate at continuous high power, which negatively impacts the chiller's lifespan. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a chiller that can make full use of the remaining cooling capacity and has a supplementary cooling function, in order to address the shortcomings of the existing technology.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0005] A residual cooling capacity supplemental chiller includes a water tank, a compressor, a shell-and-tube condenser, a circulating pump, and a plate heat exchanger. The water tank contains an evaporator. The evaporator, compressor, and shell-and-tube condenser are connected via refrigerant pipes to form a refrigeration circuit. The shell-and-tube condenser has two cooling water ports connected to a cooling water inlet pipe and a cooling water outlet pipe, respectively. The water tank outlet is connected to the circulating pump, and the circulating pump outlet is connected to a chilled water outlet pipe. The plate heat exchanger contains a first heat exchange channel and a second heat exchange channel. The inlet of the first heat exchange channel is connected to a chilled water return pipe, and the outlet of the first heat exchange channel is connected to the water tank return port. The inlet of the second heat exchange channel is connected to the cooling water inlet pipe via a first water pipe, and the outlet of the second heat exchange channel is connected to the cooling water outlet pipe via a second water pipe.

[0006] Preferably, the first water pipe is equipped with a manual valve.

[0007] Preferably, the chilled water outlet pipe is equipped with a first electric valve.

[0008] Preferably, a second electric valve is provided on the cooling water inlet pipe.

[0009] Preferably, the system includes a frame on which the water tank, compressor, shell and tube condenser, circulating pump, and plate heat exchanger are all mounted.

[0010] Preferably, the water tank is located near the top of the frame, the compressor, shell and tube condenser and circulating pump are located near the bottom of the frame, and the plate heat exchanger is located above the shell and tube condenser.

[0011] Preferably, the front side of the frame is provided with an operation panel and multiple pressure gauges.

[0012] In the residual cooling capacity supplemental cooling chiller disclosed in this utility model, when the compressor is running, it drives the refrigerant to circulate in the refrigeration circuit formed by the evaporator, the compressor, and the shell-and-tube condenser, thereby cooling the water in the water tank. The chilled water is then supplied to industrial equipment through the chilled water outlet pipe. Simultaneously, the cooling water inlet pipe and the cooling water outlet pipe are used to cool the shell-and-tube condenser. When the chilled water returns to the chilled water return pipe, it enters the first heat exchange channel in the plate heat exchanger and then returns through the outlet of the first heat exchange channel. In the water tank, under the action of the plate heat exchanger, heat exchange occurs in the first heat exchange channel and the second heat exchange channel. This causes a portion of the water in the cooling water inlet pipe to enter the second heat exchange channel through the first water pipe, and then flow back to the cooling water outlet pipe through the second water pipe. During this process, the residual cooling capacity of the returning chilled water is used to cool the cooling water in the second heat exchange channel, thereby reducing the overall water temperature in the cooling water circuit. This not only improves the heat exchange efficiency of the shell and tube condenser, but also reduces the load on the compressor, which helps to extend the service life of the chiller. Attached Figure Description

[0013] Figure 1 This is a perspective view of the chiller of this utility model;

[0014] Figure 2 The internal structure of the chiller of this utility model Figure 1 ;

[0015] Figure 3 The internal structure of the chiller of this utility model Figure 2 . Detailed Implementation

[0016] The present invention will now be described in more detail with reference to the accompanying drawings and embodiments.

[0017] This utility model discloses a residual cooling capacity supplementary cooling water chiller, combined with... Figures 1 to 3As shown, it includes a water tank 1, a compressor 2, a shell-and-tube condenser 3, a circulating pump 4, and a plate heat exchanger 5. The water tank 1 is equipped with an evaporator. The evaporator, the compressor 2, and the shell-and-tube condenser 3 are connected by a refrigerant pipe 6 to form a refrigeration circuit. The two cooling water ports of the shell-and-tube condenser 3 are respectively connected to a cooling water inlet pipe 7 and a cooling water outlet pipe 8. The outlet of the water tank 1 is connected to the circulating pump 4, and the outlet of the circulating pump 4 is connected to a chilled water outlet pipe 9. The plate heat exchanger 5 is equipped with a first heat exchange channel and a second heat exchange channel. The inlet of the first heat exchange channel is connected to a chilled water return pipe 10, and the outlet of the first heat exchange channel is connected to the return port of the water tank 1. The inlet of the second heat exchange channel is connected to the cooling water inlet pipe 7 through a first water pipe 11, and the outlet of the second heat exchange channel is connected to the cooling water outlet pipe 8 through a second water pipe 12.

[0018] In the above structure, when the compressor 2 operates, it drives the refrigerant to circulate within the refrigeration circuit formed by the evaporator, the compressor 2, and the shell-and-tube condenser 3. This causes the evaporator to cool the water in the water tank 1. The cooled chilled water is then supplied to industrial equipment through the chilled water outlet pipe 9. Simultaneously, the cooling water inlet pipe 7 and the cooling water outlet pipe 8 are used to cool the shell-and-tube condenser 3. When the chilled water returns to the chilled water return pipe 10, it enters the first heat exchange channel within the plate heat exchanger 5 and then returns to the water tank 1 through the outlet of the first heat exchange channel. Under the action of the plate heat exchanger 5, heat exchange occurs in the first heat exchange channel and the second heat exchange channel, so that a portion of the water in the cooling water inlet pipe 7 enters the second heat exchange channel through the first water pipe 11, and then flows back to the cooling water outlet pipe 8 through the second water pipe 12. During this process, the residual cooling capacity of the returning chilled water is used to cool the cooling water in the second heat exchange channel, thereby reducing the overall water temperature in the cooling water circuit. This not only improves the heat exchange efficiency of the shell and tube condenser 3, but also reduces the load on the compressor 2, which helps to extend the service life of the chiller.

[0019] In this embodiment, the residual cooling capacity of the chilled water can be utilized under the action of the plate heat exchanger 5. In order to control the opening and closing state of the second heat exchange channel, a manual valve 13 is provided on the first water pipe 11 in this embodiment.

[0020] In practical applications, to achieve control of the opening and closing states of chilled water and cooling water, combined with Figure 2 and Figure 3 As shown, a first electric valve 14 is provided on the chilled water outlet pipe 9. A second electric valve 15 is provided on the cooling water inlet pipe 7.

[0021] For information on the overall structure of the equipment, please refer to [link / reference]. Figure 1 This embodiment includes a frame 16, on which the water tank 1, compressor 2, shell and tube condenser 3, circulating pump 4 and plate heat exchanger 5 are all mounted.

[0022] To achieve a rational layout within the chiller, in this embodiment, the water tank 1 is located near the top of the frame 16, the compressor 2, shell-and-tube condenser 3, and circulating pump 4 are located near the bottom of the frame 16, and the plate heat exchanger 5 is positioned above the shell-and-tube condenser 3. The water tank 1's placement in the upper part of the frame 16 facilitates the supply of chilled water and simultaneously secures the compressor 2, shell-and-tube condenser 3, and circulating pump 4 to the bottom of the frame 16, thus ensuring reliable installation of these components.

[0023] As a preferred method, please refer to Figure 1 The front side of the frame 16 is provided with an operation panel 17 and multiple pressure gauges 18.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. All modifications, equivalent substitutions or improvements made within the technical scope of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A residual cooling capacity supplemental cooling water chiller, characterized in that, The system includes a water tank, a compressor, a shell-and-tube condenser, a circulating pump, and a plate heat exchanger. The water tank contains an evaporator. The evaporator, compressor, and shell-and-tube condenser are connected via refrigerant pipes to form a refrigeration circuit. The two cooling water ports of the shell-and-tube condenser are respectively connected to a cooling water inlet pipe and a cooling water outlet pipe. The water tank outlet is connected to the circulating pump, and the circulating pump outlet is connected to a chilled water outlet pipe. The plate heat exchanger contains a first heat exchange channel and a second heat exchange channel. The inlet of the first heat exchange channel is connected to a chilled water return pipe, and the outlet of the first heat exchange channel is connected to the water tank return port. The inlet of the second heat exchange channel is connected to the cooling water inlet pipe via a first water pipe, and the outlet of the second heat exchange channel is connected to the cooling water outlet pipe via a second water pipe.

2. The residual cooling capacity supplemental cooling chiller as described in claim 1, characterized in that, The first water pipe is equipped with a manual valve.

3. The residual cooling capacity supplemental cooling chiller as described in claim 1, characterized in that, The chilled water outlet pipe is equipped with a first electric valve.

4. The residual cooling capacity supplemental cooling chiller as described in claim 1, characterized in that, A second electric valve is installed on the cooling water inlet pipe.

5. The residual cooling capacity supplemental cooling chiller as described in claim 1, characterized in that, The system includes a frame on which the water tank, compressor, shell and tube condenser, circulating pump and plate heat exchanger are all mounted.

6. The residual cooling capacity supplemental cooling chiller as described in claim 5, characterized in that, The water tank is located near the top of the frame, the compressor, shell and tube condenser and circulating pump are located near the bottom of the frame, and the plate heat exchanger is located above the shell and tube condenser.

7. The residual cooling capacity supplemental cooling chiller as described in claim 5, characterized in that, The front side of the frame is equipped with an operation panel and multiple pressure gauges.

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