Air conditioner chilled water waste heat recovery energy-saving device
By establishing a waste heat recovery path between the tobacco processing workshop and the cigarette packaging workshop in the cigarette factory, using a water distributor and a water collector for connection, and adding a control valve, the problem of ineffective utilization of chilled water in the cigarette packaging workshop was solved, realizing the direct transportation and recycling of chilled water, reducing system energy consumption, and improving operating efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA TOBACCO SICHUAN IND CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-07
AI Technical Summary
In the air conditioning systems of the cigarette manufacturing and packaging workshops, the chilled water in the packaging workshops was not effectively utilized after being heated, resulting in energy waste and increased production costs.
By establishing a waste heat recovery path between the rolling and packaging workshop and the yarn making workshop, connecting them with a water distributor and a water collector, and adding a first control valve, the direct delivery and recycling of chilled water can be achieved, simplifying the pipeline layout and reducing system energy consumption.
It reduces the cooling demand in the yarn-making workshop, avoids the ineffective discharge of waste heat from the recycled water in the packaging workshop, reduces system energy consumption, and improves operating efficiency and convenience.
Smart Images
Figure CN224470324U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of tobacco preparation technology, and in particular to an energy-saving device for recovering waste heat from air conditioning chilled water. Background Technology
[0002] In the cigarette manufacturing process, the air conditioning systems of the tobacco processing workshop and the packaging workshop are crucial for maintaining a suitable production environment. In related technologies, the temperature requirements of the tobacco processing workshop and the packaging workshop differ, with the tobacco processing workshop typically requiring a higher temperature than the packaging workshop. In winter, the chilled water systems of the tobacco processing workshop and the packaging workshop operate independently. The chilled water in the packaging workshop absorbs heat, warms up, and is then directly returned, failing to be effectively utilized. Meanwhile, the tobacco processing workshop still requires its own heating system. This results in significant energy waste and increases production costs. Utility Model Content
[0003] Therefore, it is necessary to provide an energy-saving device for recovering waste heat from air conditioning chilled water, addressing the issue of waste heat utilization in packaging workshops.
[0004] This application provides an energy-saving device for recovering waste heat from air conditioning chilled water, the energy-saving device for recovering waste heat from air conditioning chilled water includes:
[0005] A water distributor is used to connect the water supply end of the rolling and packaging workshop and the water supply end of the yarn making workshop.
[0006] A water collector is used to connect the return water end of the packaging workshop and the return water end of the yarn making workshop;
[0007] An internal heat transfer pipeline connects the outlet of the water collector and the inlet of the water distributor;
[0008] A first control valve is provided on the internal heat conveying pipeline. The first control valve is used to control the opening and closing of the internal heat conveying pipeline. When the internal heat conveying pipeline is in the open state, the chilled water at the return water end of the rolling and packaging workshop can flow into the water supply end of the yarn making workshop in sequence through the water collector, the internal heat conveying pipeline and the water distributor.
[0009] In one embodiment, the air conditioning chilled water waste heat recovery energy-saving device further includes a refrigeration unit, the inlet of which is connected to the outlet of the water collector, and the outlet of which is connected to the inlet of the water distributor.
[0010] The two ends of the internal heat transfer pipe are respectively connected to the upstream pipe of the water inlet end of the refrigeration unit and the downstream pipe of the water outlet end of the refrigeration unit.
[0011] In one embodiment, the water inlet of the refrigeration unit is connected to the water collector via a first pipe;
[0012] The air conditioning chilled water waste heat recovery energy-saving device also includes a chilled water pump. The outlet of the refrigeration unit is connected to the chilled water pump through a second pipeline, and the chilled water pump is connected to the water distributor through a third pipeline.
[0013] The two ends of the internal heat delivery pipeline are connected to the first pipeline and the third pipeline, respectively.
[0014] In one embodiment, the air conditioning chilled water waste heat recovery energy-saving device further includes an internal heat conversion pipe and a second control valve. The two ends of the internal heat conversion pipe are respectively connected to the water supply end of the rolling and packaging workshop and the water return end of the yarn making workshop. The internal heat conversion pipe is provided with a second control valve for controlling the opening and closing of the internal heat conversion pipe.
[0015] When the internal heat conversion pipe is in the open state, the chilled water at the return water end of the yarn making workshop can flow into the water supply end of the rolling and packaging workshop through the internal heat conversion pipe.
[0016] In one embodiment, the air conditioning chilled water waste heat recovery energy-saving device further includes a third control valve and a fourth control valve. The third control valve is located on the pipeline connecting the outlet of the water distributor and the water supply end of the rolling workshop, and the fourth control valve is located on the pipeline connecting the return water end of the silk making workshop and the inlet of the water collector.
[0017] The first control valve and the second control valve are configured to open or close synchronously, and the third control valve and the fourth control valve are configured to open or close synchronously, with the opening and closing states of the first control valve and the third control valve being opposite.
[0018] In one embodiment, the air conditioning chilled water waste heat recovery energy-saving device further includes a first flow detection component located at the water supply end of the silk-making workshop, the first flow detection component being used to detect the flow rate of chilled water flowing into the water inlet of the silk-making workshop.
[0019] In one embodiment, the air conditioning chilled water waste heat recovery energy-saving device further includes a second flow detection component located at the water outlet of the packaging workshop, the second flow detection component being used to detect the flow rate of chilled water flowing out of the water outlet of the packaging workshop.
[0020] In one embodiment, the air conditioning chilled water waste heat recovery energy-saving device further includes a first temperature detection component located at the water supply end of the silk-making workshop, the first temperature detection component being used to detect the temperature of the chilled water flowing into the water supply end of the silk-making workshop.
[0021] In one embodiment, the internal heat delivery pipe includes a body and an insulation layer disposed on the outer peripheral surface of the body.
[0022] In one embodiment, the internal heat transfer conduit includes a body and a corrosion-resistant layer disposed on the inner peripheral surface of the body.
[0023] The aforementioned air conditioning chilled water waste heat recovery energy-saving device connects the water distributor to the water supply end of the rolling and packaging workshop and the water supply end of the yarn making workshop, and the water collector connects the water return end of the rolling and packaging workshop and the water return end of the yarn making workshop. An internal heat transmission pipeline with a first control valve is added between the outlet of the water collector and the inlet of the water distributor. When the first control valve is opened, the chilled water from the water return end of the rolling and packaging workshop can be directly collected by the water collector and directly transported to the water distributor through the internal heat transmission pipeline, and finally supplied to the water supply end of the yarn making workshop.
[0024] This application utilizes the characteristic that the temperature required in the yarn-making workshop is higher than that in the winding and packaging workshop, and directly recovers the waste heat of the chilled water after the winding and packaging workshop is heated to the yarn-making workshop for recycling. This reduces the cooling demand of the yarn-making workshop and avoids the ineffective discharge of waste heat from the return water in the winding and packaging workshop, thereby reducing system energy consumption. At the same time, the hub design of the water distributor and water collector simplifies the pipeline layout. The waste heat recovery path can be quickly switched by simply opening and closing the first control valve, making the modification convenient and the operation highly efficient.
[0025] Compared to the existing independent operation of chilled water systems in the yarn processing and packaging workshops, which leads to energy waste, this application establishes a cross-workshop waste heat recovery path by simultaneously connecting the water supply ends of both workshops through a water distributor and simultaneously connecting the water return ends of both workshops through a water collector. Furthermore, an internal heat transfer pipeline, controlled by a first control valve, directly connects the outlet of the water collector to the inlet of the water distributor. When the first control valve is open, the heated chilled water from the packaging workshop's return flow is directly collected by the water collector and then transported to the water distributor via the internal heat transfer pipeline, ultimately supplying the yarn processing workshop for recycling. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the structure of the energy-saving device for waste heat recovery of air conditioning chilled water provided in the embodiments of this application.
[0027] Figure 2 This is a schematic diagram of a structure with a third control valve and a fourth control valve provided for an embodiment of this application.
[0028] Figure label:
[0029] 100. Water supply end of the packaging workshop; 110. Water return end of the packaging workshop;
[0030] 200. Water supply end of the silk-making workshop; 210. Water return end of the silk-making workshop;
[0031] 300. Water distributor;
[0032] 400. Water collector;
[0033] 500. Internal heat transfer pipeline; 510. First control valve;
[0034] 600. Refrigeration unit; 610. First pipeline; 620. Second pipeline; 630. Third pipeline;
[0035] 700. Chilled water pump;
[0036] 800. Internal heat conversion pipe; 810. Second control valve;
[0037] 900, Third control valve; 910, Fourth control valve. Detailed Implementation
[0038] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0039] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0040] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0042] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0043] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.
[0044] This application provides an energy-saving device for recovering waste heat from air conditioning chilled water, such as... Figure 1 As shown, an energy-saving device for recovering waste heat from air conditioning chilled water includes: a water distributor 300, a water collector 400, an internal heat conveying pipe 500, and a first control valve 510. The water distributor 300 is used to connect to the water supply end 100 of the rolling and packaging workshop and the water supply end 200 of the yarn making workshop; the water collector 400 is used to connect to the return water end 110 of the rolling and packaging workshop and the return water end 210 of the yarn making workshop; the internal heat conveying pipe 500 connects the outlet of the water collector 400 and the inlet of the water distributor 300; the first control valve 510 is provided on the internal heat conveying pipe 500 and is used to control the opening and closing of the internal heat conveying pipe 500. When the internal heat conveying pipe 500 is in the open state, the chilled water from the return water end 110 of the rolling and packaging workshop can pass through the water collector 400, the internal heat conveying pipe 500, and the water distributor 300 in sequence and flow into the water supply end 200 of the yarn making workshop.
[0045] The aforementioned air conditioning chilled water waste heat recovery energy-saving device connects the water distributor 300 to the water supply end 100 of the rolling and packaging workshop and the water supply end 200 of the yarn making workshop, and the water collector 400 to the water return end 110 of the rolling and packaging workshop and the water return end 210 of the yarn making workshop. An internal heat transmission pipeline 500 with a first control valve 510 is added between the outlet of the water collector 400 and the inlet of the water distributor 300. When the first control valve 510 is opened, the chilled water from the water return end 110 of the rolling and packaging workshop can be directly collected by the water collector 400 and directly transported to the water distributor 300 through the internal heat transmission pipeline 500, and finally supplied to the water supply end 200 of the yarn making workshop.
[0046] This application utilizes the characteristic that the temperature required in the yarn-making workshop is higher than that in the winding and packaging workshop, and directly recovers the waste heat from the chilled water after the winding and packaging workshop is heated back to the yarn-making workshop for recycling. This reduces the cooling demand of the yarn-making workshop and avoids the ineffective discharge of waste heat from the return water in the winding and packaging workshop, thereby reducing system energy consumption. At the same time, the hub design of the water distributor 300 and the water collector 400 simplifies the pipeline layout. The waste heat recovery path can be quickly switched by simply opening and closing the first control valve 510, making the modification convenient and the operation highly efficient.
[0047] Compared to the existing independent operation of chilled water systems in the yarn processing and packaging workshops, which leads to energy waste, this application establishes a cross-workshop waste heat recovery path by simultaneously connecting the water supply ends of both workshops via a water distributor 300 and a water collector 400, and by adding an internal heat transfer pipeline 500, which is opened and closed by a first control valve 510, directly connecting the outlet of the water collector 400 and the inlet of the water distributor 300. When the first control valve 510 is open, the heated chilled water from the packaging workshop's return water is directly collected by the water collector 400 and transported to the water distributor 300 via the internal heat transfer pipeline 500, ultimately supplying the yarn processing workshop for recycling.
[0048] In one embodiment, such as Figure 1As shown, the air conditioning chilled water waste heat recovery energy-saving device also includes a chiller unit 600, the inlet end of the chiller unit 600 is connected to the outlet of the water collector 400, and the outlet end of the chiller unit 600 is connected to the inlet of the water distributor 300; the two ends of the internal heat transmission pipeline 500 are respectively connected to the upstream pipeline of the inlet end of the chiller unit 600 and the downstream pipeline of the outlet end of the chiller unit 600. The chiller unit 600 is integrated into the main pipeline between the outlet of the water collector 400 and the inlet of the water distributor 300. The two ends of the internal heat transfer pipeline 500 are connected to the upstream pipeline of the inlet end and the downstream pipeline of the outlet end of the chiller unit 600, respectively. While retaining the basic functions of the chiller unit 600, the physical isolation between the waste heat recovery path and the cooling path is ensured: when the first control valve 510 is opened, the heated chilled water at the return water end 110 of the packaging workshop can completely bypass the chiller unit 600 and be directly transported to the water supply end 200 of the yarn making workshop through the internal heat transfer pipeline 500, avoiding the waste heat being ineffectively cooled; when the first control valve 510 is closed, the return water can still flow normally through the chiller unit 600 for cooling and then circulate for cooling. Thus, the efficient switching between the cooling mode and the waste heat recovery mode is achieved under the premise of simplifying the pipeline layout, significantly reducing the system energy consumption.
[0049] In one embodiment, such as Figure 1 As shown, the inlet of the chiller unit 600 is connected to the water collector 400 through the first pipe 610; the air conditioning chilled water waste heat recovery energy-saving device also includes a chilled water pump 700, the outlet of the chiller unit 600 is connected to the chilled water pump 700 through the second pipe 620, and the chilled water pump 700 is connected to the water distributor 300 through the third pipe 630; the two ends of the internal heat transfer pipe 500 are connected to the first pipe 610 and the third pipe 630 respectively.
[0050] By placing the chilled water pump 700 on the third pipeline 630 between the outlet of the chiller unit 600 and the distributor 300, and specifying that the two ends of the internal heat transfer pipeline 500 are respectively connected to the first pipeline 610 between the collector 400 and the chiller unit 600 and the third pipeline 630 between the chilled water pump 700 and the distributor 300, the pressurization and transfer function of the chilled water pump 700 to the cooled chilled water is ensured in the cooling mode. In the waste heat recovery mode with the first control valve 510 open, the heated return water from the packaging workshop is directly bypassed to the third pipeline 630 through the first pipeline 610, completely bypassing the chiller unit 600 and the chilled water pump 700, and directly using the system's natural pressure difference to transport it to the yarn making workshop, thus avoiding the waste of water pump energy.
[0051] In one embodiment, such as Figure 1 and Figure 2As shown, the air conditioning chilled water waste heat recovery energy-saving device also includes an internal heat conversion pipe 800 and a second control valve 810. The two ends of the internal heat conversion pipe 800 are connected to the water supply end 100 of the rolling and packaging workshop and the water return end 210 of the yarn making workshop, respectively. The internal heat conversion pipe 800 is equipped with a second control valve 810 to control the opening and closing of the internal heat conversion pipe 800. When the internal heat conversion pipe 800 is in the open state, the chilled water of the water return end 210 of the yarn making workshop can flow into the water supply end 100 of the rolling and packaging workshop through the internal heat conversion pipe 800.
[0052] By adding an internal heat conversion pipe 800 with its two ends connected to the water supply end 100 of the packaging workshop and the water return end 210 of the yarn making workshop respectively, and installing a second control valve 810 on the pipe, the chilled water from the water return end 210 of the yarn making workshop can be directly transported to the water supply end 100 of the packaging workshop through the internal heat conversion pipe 800 when the second control valve 810 is opened. Taking advantage of the fact that the chilled water temperature required by the yarn making workshop is higher than that of the packaging workshop, when the water return temperature of the yarn making workshop is still lower than the water supply temperature required by the packaging workshop, the water does not need to be returned to the refrigeration unit 600 for cooling, but is directly supplied to the packaging workshop with lower temperature requirements for recycling. This reduces the dependence of the packaging workshop on the cooling capacity of the refrigeration unit 600 and avoids the ineffective circulation of the residual cooling water in the yarn making workshop during the return process to the refrigeration unit 600, further reducing the system energy consumption.
[0053] In one embodiment, such as Figure 1 and Figure 2 As shown, the air conditioning chilled water waste heat recovery energy-saving device also includes a third control valve 900 and a fourth control valve 910. The third control valve 900 is located on the pipeline connecting the outlet of the water distributor 300 and the water supply end 100 of the rolling workshop. The fourth control valve 910 is located on the pipeline connecting the return water end 210 of the silk making workshop and the inlet of the water collector 400. The first control valve 510 and the second control valve 810 are configured to open or close synchronously, and the third control valve 900 and the fourth control valve 910 are configured to open or close synchronously, and the opening and closing states of the first control valve 510 and the third control valve 900 are opposite.
[0054] By installing the third control valve 900 on the pipeline from the water distributor 300 to the water supply end 100 of the packaging workshop, and the fourth control valve 910 on the pipeline from the return end 210 of the yarn-making workshop to the water collector 400, and configuring the first control valve 510 and the second control valve 810 to switch synchronously, and the third control valve 900 and the fourth control valve 910 to switch synchronously, with the states of the first control valve 510 and the third control valve 900 mutually exclusive, when switching the waste heat recovery mode: when the first control valve 510 is open (waste heat recovery is enabled), the third control valve 900... The first control valve 900 is closed simultaneously to block the direct water supply from the distributor 300 to the packaging workshop. At the same time, the fourth control valve 910 is closed simultaneously to block the return water from the spinning workshop to the collector 400, ensuring that all the heated return water from the packaging workshop is supplied to the spinning workshop through the internal heat conveying pipeline 500. When the first control valve 510 is closed (waste heat recovery is stopped), the third control valve 900 is opened simultaneously to restore the water supply from the distributor 300 to the packaging workshop. At the same time, the fourth control valve 910 is opened simultaneously to restore the path of the return water from the spinning workshop to the collector 400.
[0055] This linkage control mechanism eliminates flow conflicts between the waste heat recovery path and the basic circuit, avoids temperature runaway caused by the mixing of hot and cold water, ensures stable water supply temperature in both workshops to meet process requirements, and achieves seamless switching of operating modes through coordinated valve action, thereby improving system reliability and energy efficiency.
[0056] In one embodiment, the air conditioning chilled water waste heat recovery energy-saving device also includes a first flow detection component located at the water supply end 200 of the yarn-making workshop. The first flow detection component is used to detect the flow rate of chilled water flowing into the water inlet of the yarn-making workshop. By setting the first flow detection component at the water supply end 200 of the yarn-making workshop, the total flow rate of chilled water flowing into the yarn-making workshop is monitored in real time. Combined with the operating characteristics of the waste heat from the roll-and-bake workshop being directly supplied to the yarn-making workshop when the internal heat transfer pipeline 500 is open, the actual cold source input of the yarn-making workshop in the waste heat recovery mode is accurately obtained. This data directly reflects the utilization efficiency of the waste heat resources in the roll-and-bake workshop, providing a core basis for dynamically adjusting the opening degree of the first control valve 510 or the operating parameters of the refrigeration unit 600, ensuring that the yarn-making workshop obtains a stable chilled water flow rate that matches the process requirements with the lowest energy consumption, and avoiding insufficient water supply or redundant energy waste caused by fluctuations in waste heat input.
[0057] In one embodiment, the air conditioning chilled water waste heat recovery energy-saving device also includes a second flow detection component located at the outlet end of the packaging workshop. The second flow detection component is used to detect the flow rate of chilled water flowing out of the outlet end of the packaging workshop. By directly setting the second flow detection component at the return end 110 of the packaging workshop, the flow rate of chilled water flowing out of the packaging workshop is monitored in real time, providing key data support for the dual modes of waste heat recovery and cooling: In the waste heat recovery mode with the first control valve 510 open, the flow data directly reflects the total amount of heated chilled water available for recovery, accurately matching the heating demand of the spinning workshop, and avoiding excessive delivery that could lead to temperature runaway in the spinning workshop or insufficient flow affecting heating efficiency; In the cooling mode with the first control valve 510 closed, the data synchronously monitors the chilled water circulation load of the packaging workshop itself, providing a basis for the control of the cooling output of the refrigeration unit 600, thereby achieving precise management of dual-mode operating parameters through the deployment of a single detection point, improving system energy efficiency and stability.
[0058] In this embodiment, the first flow detection component and the second flow detection component include flow meters.
[0059] In one embodiment, the air conditioning chilled water waste heat recovery energy-saving device further includes a first temperature detection component located at the water supply end 200 of the yarn-making workshop. The first temperature detection component is used to detect the temperature of the chilled water flowing into the water supply end 200 of the yarn-making workshop. By installing the first temperature detection component at the water supply end 200 of the yarn-making workshop, the first temperature detection component can monitor the temperature of the chilled water flowing into the yarn-making workshop in real time. Since the temperature required in the yarn-making workshop is higher than that in the rolling and packaging workshop, this temperature data can directly reflect whether the waste heat from the return water in the rolling and packaging workshop can meet the temperature requirements of the yarn-making workshop.
[0060] If the detected temperature meets the production environment requirements of the yarn-making workshop, the first control valve 510 can remain open to continuously utilize the waste heat from the return water in the packaging workshop. If the temperature does not meet the requirements, the system can promptly prompt adjustments to the state of the first control valve 510 to avoid affecting production in the yarn-making workshop due to unsuitable temperature. At the same time, by monitoring this temperature, it can be ensured that the yarn-making workshop obtains a stable and suitable chilled water temperature, guaranteeing a stable production environment. This effectively utilizes waste heat while improving the reliability and energy-saving effect of the entire system.
[0061] For example, when the first temperature detection component detects that the chilled water temperature is lower than the temperature threshold required by the process in the yarn making workshop, it controls to increase the opening of the first control valve 510 to allow more high-temperature chilled water to enter the yarn making workshop; when the first temperature detection component detects that the chilled water temperature is higher than the set threshold, it controls to decrease the opening of the first control valve 510 to reduce the chilled water flow, thereby achieving precise regulation of the heating temperature in the yarn making workshop.
[0062] In this embodiment, the first temperature detection component includes a thermometer.
[0063] In one embodiment, the internal heat conveying pipe 500 includes a body and an insulation layer disposed on the outer peripheral surface of the body. By configuring the internal heat conveying pipe 500 to include a body and an insulation layer disposed on the outer peripheral surface of the body, the insulation layer on the outer peripheral surface can effectively reduce the heat loss of chilled water in the internal heat conveying pipe 500 during the conveying process. Since the chilled water returning from the packaging workshop carries waste heat that can be used by the yarn making workshop, the insulation layer can maintain the temperature stability of the chilled water during the conveying process in the pipe, ensuring that the temperature of the chilled water entering the water supply end 200 of the yarn making workshop can meet the needs of the yarn making workshop, avoiding waste heat due to heat dissipation along the way, thereby ensuring the efficiency of waste heat recovery.
[0064] In one embodiment, the internal heat transfer pipe 500 includes a body and a corrosion-resistant layer disposed on the inner circumferential surface of the body. Since chilled water may corrode the inner wall of the internal heat transfer pipe 500 during circulation due to factors such as water quality, by configuring the internal heat transfer pipe 500 to include a body and a corrosion-resistant layer disposed on the inner circumferential surface, the corrosion-resistant layer on the inner circumferential surface can effectively protect the body, extend the service life of the internal heat transfer pipe 500, and ensure the long-term stable transport of chilled water through the pipe. At the same time, it avoids problems such as leakage and blockage caused by pipe corrosion, ensuring the continuous transport of return water from the packaging workshop to the yarn-making workshop and maintaining the normal operation of the waste heat recovery system.
[0065] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0066] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. An energy-saving device for recovering waste heat from chilled water in air conditioning systems, characterized in that, The energy-saving device for recovering waste heat from air conditioning chilled water includes: A water distributor (300) is used to connect the water supply end (100) of the rolling and packaging workshop and the water supply end (200) of the yarn making workshop. A water collector (400) is used to connect to the return water end (110) of the rolling workshop and the return water end (210) of the yarn making workshop; An internal heat transfer pipe (500) connects the outlet of the water collector (400) and the inlet of the water distributor (300); A first control valve (510) is provided on the internal heat conveying pipe (500). The first control valve (510) is used to control the opening and closing of the internal heat conveying pipe (500). When the internal heat conveying pipe (500) is in the open state, the chilled water from the return water end (110) of the rolling and packaging workshop can flow into the water supply end (200) of the yarn making workshop in sequence through the water collector (400), the internal heat conveying pipe (500) and the water distributor (300).
2. The energy-saving device for waste heat recovery of air conditioning chilled water according to claim 1, characterized in that, The air conditioning chilled water waste heat recovery energy-saving device also includes a refrigeration unit (600), the inlet of the refrigeration unit (600) is connected to the outlet of the water collector (400), and the outlet of the refrigeration unit (600) is connected to the inlet of the water distributor (300). The two ends of the internal heat transfer pipe (500) are respectively connected to the upstream pipe of the water inlet end of the refrigeration unit (600) and the downstream pipe of the water outlet end of the refrigeration unit (600).
3. The energy-saving device for waste heat recovery of air conditioning chilled water according to claim 2, characterized in that, The water inlet of the refrigeration unit (600) is connected to the water collector (400) through the first pipeline (610); The air conditioning chilled water waste heat recovery energy-saving device also includes a chilled water pump (700). The outlet end of the refrigeration unit (600) is connected to the chilled water pump (700) through a second pipeline (620). The chilled water pump (700) is connected to the water distributor (300) through a third pipeline (630). The two ends of the internal heat delivery pipe (500) are respectively connected to the first pipe (610) and the third pipe (630).
4. The energy-saving device for waste heat recovery of air conditioning chilled water according to claim 1, characterized in that, The air conditioning chilled water waste heat recovery energy-saving device also includes an internal heat conversion pipe (800) and a second control valve (810). The two ends of the internal heat conversion pipe (800) are respectively connected to the water supply end (100) of the rolling and packaging workshop and the water return end (210) of the yarn making workshop. The internal heat conversion pipe (800) is provided with a second control valve (810) for controlling the opening and closing of the internal heat conversion pipe (800). When the internal heat conversion pipe (800) is in the open state, the chilled water from the return water end (210) of the yarn making workshop can flow into the water supply end (100) of the rolling and packaging workshop through the internal heat conversion pipe (800).
5. The energy-saving device for waste heat recovery of air conditioning chilled water according to claim 4, characterized in that, The air conditioning chilled water waste heat recovery energy-saving device also includes a third control valve (900) and a fourth control valve (910). The third control valve (900) is located on the pipeline connecting the outlet of the water distributor (300) and the water supply end (100) of the rolling workshop. The fourth control valve (910) is located on the pipeline connecting the return water end (210) of the silk making workshop and the inlet of the water collector (400). The first control valve (510) and the second control valve (810) are configured to open or close synchronously, and the third control valve (900) and the fourth control valve (910) are configured to open or close synchronously, and the opening and closing states of the first control valve (510) and the third control valve (900) are opposite.
6. The energy-saving device for waste heat recovery of air conditioning chilled water according to claim 1, characterized in that, The air conditioning chilled water waste heat recovery energy-saving device also includes a first flow detection component located at the water supply end (200) of the silk making workshop. The first flow detection component is used to detect the flow rate of chilled water flowing into the water inlet of the silk making workshop.
7. The energy-saving device for waste heat recovery of air conditioning chilled water according to claim 1, characterized in that, The air conditioning chilled water waste heat recovery energy-saving device also includes a second flow detection component located at the water outlet of the packaging workshop. The second flow detection component is used to detect the flow rate of chilled water flowing out of the water outlet of the packaging workshop.
8. The energy-saving device for waste heat recovery of air conditioning chilled water according to claim 1, characterized in that, The air conditioning chilled water waste heat recovery energy-saving device also includes a first temperature detection component located at the water supply end (200) of the silk-making workshop. The first temperature detection component is used to detect the temperature of the chilled water flowing into the water supply end (200) of the silk-making workshop.
9. The energy-saving device for waste heat recovery of air conditioning chilled water according to claim 1, characterized in that, The internal heat transfer pipe (500) includes a body and an insulation layer disposed on the outer peripheral surface of the body.
10. The energy-saving device for waste heat recovery of air conditioning chilled water according to claim 1, characterized in that, The internal heat transfer pipe (500) includes a body and a corrosion-resistant layer disposed on the inner peripheral surface of the body.