A cooling water circulation system for a freeze dryer

Abstract

This utility model discloses a cooling water circulation system for a freeze dryer, including a refrigeration unit and a cooling water tank. The refrigeration unit is connected to the cooling water tank via pipelines. The outlet of the cooling water tank is connected to a first freeze dryer and a second freeze dryer via a main pipeline. The first and second freeze dryers are connected to the return outlet of the cooling water tank via return pipes. The outlet of the cooling water tank is connected to the main pipeline. A water pump and a shut-off valve are installed on the main pipeline. The main pipeline is connected to a tee. The first freeze dryer is connected to the tee via a first branch pipe, and the second freeze dryer is connected to the tee via a second branch pipe. The diameters of the first and second branch pipes are different. This utility model has a simple structure and reasonable design, allowing both freeze dryers to receive a matching water intake, thereby ensuring the refrigeration effect and meeting production needs.

Description

Technical Field

[0001] This utility model belongs to the field of cooling water circuit technology, and in particular relates to a cooling water circuit circulation system for a freeze dryer. Background Technology

[0002] A freeze dryer is a device that removes moisture from materials using vacuum freeze-drying technology. In practice, some companies often equip themselves with two different models of freeze dryers to meet production needs. Each freeze dryer has its own independent external cooling water circulation system. To meet usage requirements while reducing costs, manufacturers often abandon one cooling water circulation system and share a single system between the two freeze dryers. This requires manufacturers to modify the cooling water circulation system themselves. However, this modified system often results in insufficient water volume in the larger freeze dryer during production, leading to inadequate cooling performance.

[0003] Therefore, addressing the shortcomings of the existing technologies has become the focus of efforts for those skilled in the field. Utility Model Content

[0004] The purpose of this invention is to provide a cooling water circulation system for a freeze dryer that can completely solve the shortcomings of the prior art.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A cooling water circulation system for a freeze dryer includes a refrigeration unit and a cooling water tank. The refrigeration unit is connected to the cooling water tank via pipelines. The outlet of the cooling water tank is connected to a first freeze dryer and a second freeze dryer via a main pipeline. The first freeze dryer and the second freeze dryer are connected to the return outlet of the cooling water tank via return water pipes. The outlet of the cooling water tank is connected to the main pipeline. A water pump and a shut-off valve are installed on the main pipeline. The main pipeline is connected to a tee. The first freeze dryer is connected to the tee via a first branch pipeline, and the second freeze dryer is connected to the tee via a second branch pipeline. The diameters of the first branch pipeline and the second branch pipeline are different.

[0007] Furthermore, there are two water pumps, namely a first water pump and a second water pump, which are connected in parallel on the main pipeline, and both the first water pump and the second water pump are equipped with shut-off valves at their front and rear ends.

[0008] Furthermore, the first freeze dryer is connected to the first return water port of the cooling water tank through the first return water pipe, and the diameter of the first return water pipe matches the diameter of the first branch pipe. The second freeze dryer is connected to the second return water port of the cooling water tank through the second return water pipe, and the diameter of the second return water pipe matches the diameter of the second branch pipe.

[0009] Furthermore, the inlet of the refrigeration unit is connected to the first refrigeration port of the cooling water tank through a refrigeration inlet pipe, and the refrigeration inlet pipe extends into the interior of the cooling water tank. The second refrigeration port of the cooling water tank is connected to the outlet of the refrigeration unit through a refrigeration return pipe.

[0010] Furthermore, the cooling water pool has a cubic structure, with the first refrigeration port and the second refrigeration port located on the same side wall of the cooling water pool, and the refrigeration water inlet pipe extending into the interior of the cooling water pool and close to the other side wall opposite to the first refrigeration port.

[0011] Compared with the prior art, the advantages of this utility model are: simple structure, reasonable design, and both freeze dryers can obtain matching water intake, thereby ensuring the refrigeration effect and meeting production needs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a structural diagram showing the connection between the refrigeration inlet pipe and the refrigeration return pipe and the cooling water tank in this utility model. Detailed Implementation

[0014] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0015] like Figure 1 and Figure 2 As shown, a freeze dryer cooling water circulation system includes a first freeze dryer 1, a second freeze dryer 2, a refrigeration unit 3, and a cooling water tank 4. The refrigeration unit 3 is connected to the cooling water tank 4 via pipes. The cooling water tank 4 has a cubic structure and is provided with an outlet, a first return inlet, a second return inlet, a first refrigeration port, and a second refrigeration port on its side wall. The first refrigeration port and the second refrigeration port are located on the same side wall of the cooling water tank 4, with the first refrigeration port located above the second refrigeration port and near the top of the cooling water tank 4, and the second refrigeration port near the bottom of the cooling water tank 4. The inlet of the refrigeration unit 3 is connected to the first refrigeration port of the cooling water tank 4 via a refrigeration inlet pipe 5, which extends into the interior of the cooling water tank 4 and is located near the opposite side wall of the first refrigeration port. The second refrigeration port of the cooling water tank 4 is connected to the outlet of the refrigeration unit 3 via a refrigeration return pipe 6, which does not extend into the cooling water tank 4. The water level in the cooling water pool 4 is higher than that in the cooling water inlet pipe 5, meaning that the cooling water inlet pipe 5 is submerged in water.

[0016] The above-described connection method between the refrigeration unit 3 and the cooling water tank 4 solves the problem of insufficient and uneven water temperature in the cooling water tank 4 during actual use. In this embodiment, the refrigeration unit 3 extracts water from the cooling water tank 4 through the refrigeration inlet pipe 5 and sends the cooled water back into the cooling water tank 4 through the refrigeration return pipe 6. The cooled water has a higher density, so it accumulates at the bottom of the cooling water tank 4. The refrigeration inlet pipe 5 extends into the cooling water tank 4 to pump water, specifically the upper layer with a higher temperature. This creates a backflow in the cooling water tank 4, acting like a stirring mechanism to promote a more uniform water temperature. Furthermore, the extraction of high-temperature water for cooling results in higher cooling efficiency.

[0017] In this embodiment, the outlet of the cooling water tank 4 is connected to a tee 8 via a main pipe 7. A first water pump 9 and a second water pump 10 are connected in parallel on the main pipe 7 between the tee 8 and the cooling water tank 4, and both the front and rear ends of the first water pump 9 and the second water pump 10 are equipped with shut-off valves 11. The first freeze dryer 1 is connected to the tee 8 via a first branch pipe 12, and the second freeze dryer 2 is connected to the tee 8 via a second branch pipe 13, with the first branch pipe 12 and the second branch pipe 13 having different diameters. The first freeze dryer 1 is connected to the first return water outlet of the cooling water tank 4 via a first return water pipe 14, and the diameter of the first return water pipe 14 matches that of the first branch pipe 12. The second freeze dryer 2 is connected to the second return water outlet of the cooling water tank 4 via a second return water pipe 15, and the diameter of the second return water pipe 15 matches that of the second branch pipe 13.

[0018] In this embodiment, by setting the first branch pipe 12 and the second branch pipe 13 to different diameters, the flow rate is controlled, so that the water flow from the first branch pipe 12 to the first freeze dryer 1 matches the water inlet requirement of the first freeze dryer 1, and the water flow from the second branch pipe 13 to the second freeze dryer 2 matches the water inlet requirement of the second freeze dryer 2. This completely solves the problem of insufficient water inlet for the large-scale freeze dryer and excessive water inlet for the small-scale freeze dryer in actual production, so that the water inlet of both freeze dryers can be fully matched to their respective models, and the best working effect can be obtained.

[0019] In this embodiment, two water pumps are used to address the situation where one pump fails. In such cases, the other pump can be used immediately without interrupting production and waiting for repairs, thus ensuring production continuity. Shut-off valves 11 are installed at both the front and rear ends of the first water pump 9 and the second water pump 10. This design is to prevent pipe bursts. If a shut-off valve 11 is only installed at one end of the first water pump 9 and the second water pump 10, water will flow into both pumps at the other end where no shut-off valve 11 is installed, frequently resulting in pipe bursts during actual production.

[0020] Compared with the prior art, this utility model has a simple structure and reasonable design, and both freeze dryers can obtain a matching water intake, thereby ensuring the refrigeration effect and meeting production needs.

[0021] Similarly, it should be understood that, in order to simplify this disclosure and aid in understanding one or more of the various aspects of the invention, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof. However, this method of disclosure should not be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the following claims, the inventive aspect lies in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of the invention.

[0022] Those skilled in the art will understand that modules in the device of the embodiments can be adaptively changed and placed in one or more devices different from that embodiment. Modules, units, or components in the embodiments can be combined into a single module, unit, or component, and further, they can be divided into multiple sub-modules, sub-units, or sub-components. Except where at least some of such features and / or processes or units are mutually exclusive, any combination can be used to combine all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or device so disclosed. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that serves the same, equivalent, or similar purpose.

[0023] Furthermore, those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of this invention and form different embodiments.

[0024] It should be noted that the above embodiments are illustrative of the present invention and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cooling water circulation system for a freeze dryer, comprising a refrigeration unit and a cooling water tank, wherein the refrigeration unit is connected to the cooling water tank via pipelines, the outlet of the cooling water tank is connected to a first freeze dryer and a second freeze dryer via a main pipeline, and the first freeze dryer and the second freeze dryer are connected to the return outlet of the cooling water tank via return water pipes, characterized in that: The outlet of the cooling water tank is connected to the main pipeline. A water pump and a shut-off valve are installed on the main pipeline. The main pipeline is connected to a tee. The first freeze dryer is connected to the tee through the first branch pipeline, and the second freeze dryer is connected to the tee through the second branch pipeline. The diameters of the first branch pipeline and the second branch pipeline are different.

2. The freeze dryer cooling water circulation system according to claim 1, characterized in that: There are two water pumps, namely the first water pump and the second water pump. The first water pump and the second water pump are connected in parallel on the main pipeline, and both the front and rear ends of the first water pump and the second water pump are equipped with shut-off valves.

3. The freeze dryer cooling water circulation system according to claim 1, characterized in that: The first freeze dryer is connected to the first return water port of the cooling water tank through a first return water pipe, and the diameter of the first return water pipe matches the diameter of the first branch pipe. The second freeze dryer is connected to the second return water port of the cooling water tank through a second return water pipe, and the diameter of the second return water pipe matches the diameter of the second branch pipe.

4. The freeze dryer cooling water circulation system according to claim 1, characterized in that: The inlet of the refrigeration unit is connected to the first refrigeration port of the cooling water tank through a refrigeration inlet pipe, and the refrigeration inlet pipe extends into the interior of the cooling water tank. The second refrigeration port of the cooling water tank is connected to the outlet of the refrigeration unit through a refrigeration return pipe.

5. The freeze dryer cooling water circulation system according to claim 4, characterized in that: The cooling water pool has a cubic structure. The first refrigeration port and the second refrigeration port are located on the same side wall of the cooling water pool. The refrigeration water inlet pipe extends into the interior of the cooling water pool and is close to the other side wall opposite to the first refrigeration port.

Images