Waste heat recovery system for beer production line
By designing a waste heat recovery system on the beer production line, using a heat exchanger to transfer the heat of the cooling water to the thermos water, and recycling the cooling water after cooling, the problem of traditional bottle washing machines failing to effectively utilize the heat of the cooling water, and improving the heat utilization rate of the beer production line.
Patent Information
- Application Number
- CN202422148534.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-09-03
AI Technical Summary
Traditional bottle washing machines fail to effectively utilize the heat of the cooling water after spraying, resulting in a lower heat utilization rate of the beer production line.
A waste heat recovery system is designed, and the heat of the cooling water in the second cooling water tank is transferred to the thermos water in the warm water tank by using a heat exchanger, and the heat utilization rate is improved by recycling the cooling water after cooling.
Effectively recover the heat of the cooling water after spraying, improve the heat utilization rate of the beer production line and reduce the waste of heat.
Smart Images
Figure CN222978665U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of waste heat recovery, in particular to a waste heat recovery system for a beer production line. Background Art
[0002] The bottle washer is one of the core equipment of the beer production line. It can use high-temperature sterilizing water to spray and wash the beerless bottles to thoroughly kill the microorganisms and bacteria inside and outside the bottles. Generally, after the bottles enter the bottle washer, they will go through three stages: preheating, high-temperature sterilization, and cooling in sequence. After the traditional bottle washer cools the bottles with cooling water, the relatively high-temperature cooling water is directly discharged without being utilized or waits to cool naturally and then is recycled. This reduces the thermal utilization rate of the beer production line to a certain extent. Summary of the Utility Model
[0003] Aiming at the technical problem that the above traditional bottle washer fails to effectively utilize the heat of the cooling water after spraying, the purpose of the utility model is to provide a waste heat recovery system for a beer production line.
[0004] To achieve the above purpose, the utility model provides the following technical solutions: A waste heat recovery system for a beer production line, the beer production line includes a bottle washer and a bottle warmer, the bottle washer has a first cooling water tank and a second cooling water tank, the bottle warmer has a warm water tank, the water temperature of the first cooling water tank is lower than that of the first cooling water tank, the water temperature of the second cooling water tank is higher than that of the warm water tank, the waste heat recovery system further includes a heat exchanger, the heat exchanger has a first branch and a second branch for heat exchange, the first branch has a cold source side water inlet fluidly connected to the warm water tank and a cold source side water outlet fluidly connected to the warm water tank, the second branch has a heat source side water inlet fluidly connected to the second cooling water tank and a heat source side water outlet fluidly connected to the first cooling water tank.
[0005] In the above technical solution, preferably, the waste heat recovery system further includes a first thermometer disposed downstream of the cold source side water outlet. Further preferably, the bottle washer further includes a third cooling water tank with a water temperature higher than that of the warm water tank, and the heat source side water inlet of the second branch is fluidly connected to the third cooling water tank. It can be further preferably that the waste heat recovery system further includes a first three-way valve signal-connected to the first thermometer, the first three-way valve has a first inlet fluidly connected to the second cooling water tank, a second inlet fluidly connected to the third cooling water tank, and a first outlet fluidly connected to the second branch, and the opening degrees of the first inlet and the second inlet can be independently adjusted.
[0006] In the above technical solution, preferably, the waste heat recovery system further includes a second thermometer disposed downstream of the water outlet on the heat source side. Further preferably, the bottle washer further includes a fourth cooling pool with a water temperature lower than that of the first cooling pool, and the water outlet on the heat source side of the second branch is in fluid communication with the fourth cooling pool. It can be further preferably that the waste heat recovery system further includes a second three-way valve signal-connected to the second thermometer. The second three-way valve has a second outlet fluidly connected to the first cooling pool, a third outlet fluidly connected to the fourth cooling pool, and a third inlet fluidly connected to the second branch. The opening degrees of both the second outlet and the third outlet can be independently adjusted.
[0007] In the above technical solution, preferably, the waste heat recovery system further includes an air source heat pump, and the air source heat pump has a heat pump water inlet fluidly connected to the warm water pool and a heat pump water outlet fluidly connected to the warm water pool.
[0008] The waste heat recovery system provided by the technical solution of the present invention can use a heat exchanger to transfer part of the heat of the cooling water in the second cooling pool to the heat of the warm bottle water in the warm water pool. Subsequently, the cooling water in the second cooling pool returns to the first cooling pool with a lower water temperature after cooling for recycling. Thus, the waste heat recovery system provided by the technical solution of the present invention can effectively recover the heat of the cooling water after spraying to improve the heat utilization rate of the beer production line. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 is a schematic structural diagram of the bottle washer provided by the present invention;
[0010] Figure 2 is a schematic structural diagram of the warm bottle machine provided by the present invention;
[0011] Figure 3 is a schematic system diagram of the waste heat recovery system provided by the present invention.
[0012] Labels in the figure:
[0013] 10. Bottle washer; 11. First conveying track; 12. First sprayer; 13. First cooling pool; 14. First cooling water pump; 15. First solenoid valve; 16. Second cooling pool; 17. Third cooling pool; 18. Fourth cooling pool;
[0014] 20. Warm bottle machine; 21. Second conveying track; 22. Sprayer; 23. Warm water pool; 24. Warm water pump; 25. First thermometer; 26. Make-up water pipeline; 27. Steam pipeline;
[0015] 30. Heat exchanger; 31. Second thermometer; 32. First three-way valve; 33. Third thermometer; 34. Second three-way valve;
[0016] 40. Air source heat pump. Detailed implementation mode
[0017] To describe in detail the technical content, structural features, achieved objectives and effects of the present application, the following will describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application.
[0018] In the present application, spatial relative terms such as "under", "below", "beneath", "down", "above", "on", "over", "higher", "side" (for example, as in "side wall"), etc. are used to describe the relationship between one element and another (other) element as shown in the accompanying drawings. The spatial relative terms are intended to include different orientations of the device in use, operation and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is flipped, the element described as "under" or "beneath" other elements or features will subsequently be positioned "above" the said other elements or features. Therefore, the exemplary term "under" can include both the upper and lower orientations. In addition, the device can be positioned otherwise (for example, rotated 90 degrees or at other orientations), and accordingly, the spatial relative descriptive terms used herein are interpreted.
[0019] The present utility model provides a waste heat recovery system for a beer production line, which can recover part of the heat of the cooling water of the bottle washer 10 (see Figure 1 ) and transfer this part of the heat to the warm water of the bottle warmer 20 (see Figure 2 ), so as to improve the heat utilization rate of the beer production line. To facilitate the description of the technical solution of the present utility model, the bottle washer 10 and the bottle warmer 20 are introduced below first.
[0020] Figure 1 The bottle washer 10 provided by the present utility model is shown, which can thoroughly clean and disinfect the beerless wine bottles to avoid contaminating the subsequently filled beer. The bottle washing operation of the bottle washer 10 mainly includes the following stages:
[0021] Pre-washing stage: The wine bottles are pre-washed before the formal washing to remove the coarse impurities and dirt on the bottle surface;
[0022] Main washing stage: The bottles are comprehensively washed by using high-temperature hot water and detergent to remove the dirt, residues and label glue inside and outside the bottles;
[0023] Disinfection stage: The wine bottles are disinfected by using high-temperature water or steam to ensure that the bacteria and microorganisms inside and outside the wine bottles are completely killed;
[0024] Rinsing stage: Use clean tap water or treated water to rinse the wine bottles several times to remove residual detergent and disinfectant;
[0025] Inspection stage: Check the cleanliness of each bottle to ensure that unqualified bottles do not enter the filling stage.
[0026] Back to Figure 1 The bottle washing machine 10 provided in this embodiment includes a first direction ( Figure 1 The first conveying track 11 for conveying wine bottles (in the direction indicated by the arrow in the middle) and the cooling zone for cooling the wine bottles after high temperature sterilization with cooling water. In order to prevent the wine bottles from breaking due to a large temperature difference, the cooling zone adopts a step-by-step cooling method. Specifically, the cooling zone includes a first cooling unit, a second cooling unit, a third cooling unit and a fourth cooling unit arranged in sequence in the opposite direction of the first direction.
[0027] The first cooling unit includes a first sprayer 12 capable of spraying cooling water onto the wine bottles on the first conveying track 11, a first cooling water pool 13 located at the lower side of the conveying track 11 to receive the cooling water after spraying, a first cooling water pump 14 capable of providing flow power for the cooling water, and a first solenoid valve 15. The first cooling water pool 13, the first cooling water pump 14, the first solenoid valve 15 and the first sprayer 12 are fluidically connected in sequence.
[0028] Similarly, the second cooling unit includes a second sprayer, a second cooling water pool 16, a second cooling water pump and a second electromagnetic valve; the third cooling unit includes a third sprayer, a third cooling water pool 17, a third cooling water pump and a third electromagnetic valve; the fourth cooling unit includes a fourth sprayer, a fourth cooling water pool 18, a fourth cooling water pump and a fourth electromagnetic valve. The main functions, layout methods and relative relationships between the sprayers, cooling water pools, cooling water pumps and electromagnetic valves in each cooling unit are basically the same, so they will not be described one by one here.
[0029] When the bottle washing machine 10 is washing bottles, the supplemented normal temperature water enters the first cooling water pool 13. The cooling water is sprayed to the bottles on the first conveying track 11 through the first sprayer 12, taking away part of the heat of the bottles and increasing the temperature. The cooling water in the first cooling water pool 13 flows into the second cooling water pool 16 by overflow. When the supplemented normal temperature water and the overflowing cooling water reach a balance, the temperature of the first cooling water pool 13 will be maintained at a relatively stable value.
[0030] Similarly, the cooling water in the second cooling water tank 16 is replenished by the first cooling water tank 13, and the cooling water in the second cooling water tank 16 overflows into the third cooling water tank 17, and so on. Taking the embodiment provided in this implementation as an example, generally, the temperature of the wine bottle when it enters the cooling area is about 80-90°C. The water temperature in the first cooling water tank 13 is slightly higher than the temperature of the replenished normal temperature water, and the water temperatures of the second, third, and fourth cooling water tanks will be maintained at 47°C, 60°C, and 71°C in sequence. After the cooling water in the fourth cooling water tank in the traditional bottle washer overflows, it will be directly discharged or recycled after natural cooling, thus wasting a large amount of heat.
[0031] Figure 2 The bottle warming machine 20 provided in this embodiment can use warm water to heat the wine bottle and the beer filled therein to a certain temperature and maintain it at this temperature for a period of time to eliminate the microorganisms in the beer filled in the beer bottle and prevent the beer from deteriorating during storage and transportation. In addition, the functions of the bottle warming machine 20 also include improving the stability of the beer and improving the taste of the beer.
[0032] Specifically, the bottle warming machine 20 includes a second conveying track 21 for conveying beer bottles along the second direction ( Figure 2 the direction indicated by the arrow in the figure), a sprinkler 22 for spraying warm bottle water onto the second conveying track 21, a warm water tank 23 located below the second conveying track 21 to receive the warm bottle water after spraying, and a warm water pump 24 for providing the flowing power for the warm bottle water. The warm water tank 23, the water pump 24, and the sprinkler 22 are sequentially fluidly connected and.
[0033] In addition, the bottle warming machine 20 further includes a first thermometer 25 for monitoring the water temperature of the warm water tank 23, a water replenishing pipeline 26 for replenishing water into the warm water tank 23, and a steam pipeline 27 for conveying heating steam into the warm water tank 23. The traditional bottle warming machine uses heating steam to heat the warm bottle water in the warm water tank. Here, the steam pipeline 27 of the bottle warming machine 20 in this embodiment is only used as an example to illustrate the function, that is, the steam pipeline 27 of the bottle warming machine 20 in this embodiment is not the main heating path. Among them, the water temperature in the warm water tank 23 is usually maintained at about 50°C.
[0034] Refer to Figure 3, the waste heat recovery device provided by the present utility model further includes a heat exchanger 30, which has a first branch and a second branch that can exchange heat with each other. The first branch has a cold source side water inlet fluidly connected to the warm water tank 23 and a cold source side water outlet also fluidly connected to the warm water tank 23. The second branch has a heat source side water inlet fluidly connected to the third cooling water tank 17 and a heat source side water outlet fluidly connected to the second cooling water tank 16. Thus, by using the heat exchanger 30, part of the heat of the cooling water in the third cooling water tank 17 is transferred to the warm water bottle. Subsequently, the cooled cooling water flows back to the second cooling water tank 16 with a water temperature lower than that of the third cooling water tank 17 for continued use, thereby improving the heat utilization rate of the beer production line.
[0035] It should be noted here that the temperature of the heat source side water inlet of the heat exchanger 30 needs to be higher than that of the cold source side water inlet, but the temperature of the heat source side water outlet has no relation with the temperature of the cold source side water inlet. In other embodiments, a fourth cooling water tank 18 can also be used to supply cooling water to the heat exchanger 30, and the cooled cooling water is returned to the third cooling water tank 17.
[0036] Furthermore, to precisely control the return water temperature of the warm water tank 23, the waste heat recovery system further includes a second thermometer 31 disposed downstream of the cold source side outlet, and the heat source side water inlet is also fluidly connected to the fourth cooling water tank 18. By adjusting the flow rates of the cooling water entering the heat exchanger 30 in the third and fourth cooling water tanks, the water temperature of the heat source side water inlet of the heat exchanger 30 is adjusted, thereby controlling the return water temperature of the warm water tank 23.
[0037] Here, this embodiment also provides an implementation scheme for adjusting the flow rates of the cooling water entering the heat exchanger 30 from the third and fourth cooling water tanks: the waste heat recovery system further includes a first three-way valve 32 signal-connected to the second thermometer 31. The first three-way valve 32 has a first inlet fluidly connected to the fourth cooling water tank 18, a second inlet fluidly connected to the third cooling water tank 17, and a first outlet fluidly connected to the heat source side water inlet. The first and second inlets are both configured to independently adjust the opening degree. Thus, the first three-way valve 32 can adjust the opening degrees of the first and second inlets based on the feedback of the second thermometer 31, that is, adjust the flow rates and proportions of the cooling water entering the heat exchanger 30 from the third and fourth cooling water tanks.
[0038] Furthermore, the return water temperature of the cooling water may be lower than the temperature of the second cooling water tank 16, resulting in a decrease in the water temperature of the second cooling water tank 16. If the temperature difference between the water temperature of the second cooling water tank 16 and the wine bottles under the second sprayer is too large, the wine bottles may burst. For this reason, this waste heat recovery system further includes a third thermometer 33 disposed downstream of the heat source side water outlet, and the heat source side water outlet is also fluidly connected to the first cooling water tank 13. Thus, the cooling water can be selectively transported to the first or second cooling water tank based on the return water temperature of the cooling water.
[0039] Here, this embodiment further provides an implementation scheme for adjusting the return water flow rates of the first and second cooling water pools: The waste heat recovery system further includes a second three-way valve 34 signal-connected to the third thermometer 33. The second three-way valve 34 has a second outlet fluidly connected to the first cooling water pool 13, a third outlet fluidly connected to the second cooling water pool 16, and a third inlet fluidly connected to the water outlet of the heat source side. Both the second and third outlets are configured to be independently adjustable in opening degree. Thus, the second three-way valve 34 can adjust the opening degrees of the second and third outlets based on the feedback of the third thermometer 33, that is, adjust the return water flow rates and proportions of the first and second cooling water pools.
[0040] Furthermore, when the bottle washer 10 and the bottle warmer 20 are actually in use, they are in the packaging workshop, and the ambient temperature throughout the year is about 35°C, and can reach up to 40°C in summer. The packaging workshop is a good air heat source. Thus, this heat system is further configured with an air source heat pump 40. The air source heat pump 40 has a heat pump water inlet fluidly connected to the warm water pool 23 and a heat pump water outlet fluidly connected to the warm water pool 23 to recover the heat in the ambient air and reduce the temperature of the packaging workshop, improve the working environment of the operators in the workshop, and reduce the air conditioning energy consumption of the workshop.
[0041] The above embodiments are only for illustrating the technical concept and features of the present application, and their purpose is to enable those skilled in the art to understand the content of the present application and implement it accordingly, and should not be used to limit the protection scope of the present application. All equivalent changes or modifications made according to the spirit of the present application should be covered within the protection scope of the present application.
Claims
1. A waste heat recovery system for a beer production line, the beer production line comprising a bottle washer and a bottle warmer, the bottle washer having a first cooling water pool and a second cooling water pool, the bottle warmer having a warm water pool, the water temperature of the first cooling water pool being lower than the water temperature of the second cooling water pool, the water temperature of the second cooling water pool being higher than the water temperature of the warm water pool, characterized in that: The waste heat recovery system also includes a heat exchanger, which has a first branch and a second branch for heat exchange, the first branch has a cold source side water inlet fluid connected to the warm water pool and a cold source side water outlet fluid connected to the warm water pool, and the second branch has a hot source side water inlet fluid connected to the second cooling water pool and a hot source side water outlet fluid connected to the first cooling water pool.
2. The waste heat recovery system according to claim 1, characterized in that: It also includes a first thermometer arranged downstream of the water outlet on the cold source side.
3. The waste heat recovery system according to claim 2, characterized in that: The bottle washing machine further comprises a third cooling water pool having a water temperature higher than that of the warm water pool, and the heat source side water inlet fluid of the second branch is connected to the third cooling water pool.
4. The waste heat recovery system according to claim 3, characterized in that: It also includes a first three-way valve whose signal is connected to the first thermometer, wherein the first three-way valve has a first inlet fluidly connected to the second cooling water pool, a second inlet fluidly connected to the third cooling water pool, and a first outlet fluidly connected to the second branch, and the first inlet and the second inlet can both independently adjust the opening.
5. The waste heat recovery system according to claim 1, characterized in that: It also includes a second thermometer arranged downstream of the water outlet on the heat source side.
6. The waste heat recovery system according to claim 5, characterized in that: The bottle washing machine further comprises a fourth cooling water pool having a water temperature lower than that of the second cooling water pool, and the heat source side water outlet fluid of the second branch is connected to the fourth cooling water pool.
7. The waste heat recovery system according to claim 6, characterized in that: It also includes a second three-way valve connected to the second thermometer by signal, the second three-way valve has a second outlet connected to the first cooling water pool by fluid, a third outlet connected to the fourth cooling water pool by fluid, and a third inlet connected to the second branch by fluid, and the second outlet and the third outlet can both independently adjust the opening.
8. The waste heat recovery system according to claim 1, characterized in that: It also includes an air source heat pump, which has a heat pump water inlet that is fluidically connected to the warm water pool and a heat pump water outlet that is fluidically connected to the warm water pool.