A cold brew tea device
The cold brew tea device, which combines a refrigeration compressor and an ultrasonic generator, solves the problem of uncontrollable cold brewing time and temperature, achieving rapid cooling and uniform extraction, and ensuring the consistency and stability of the taste of cold brew tea.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN SUNRAIN SIGN & DISPLAY SYST
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-23
AI Technical Summary
Commercially available cold brew tea devices cannot effectively control the cold brewing time and temperature, resulting in unstable tea flavor and the ice melting quickly, making it impossible to maintain the best taste for a long time.
The refrigeration system, consisting of a refrigeration compressor and an evaporator, combined with an ultrasonic generator and controlled by water circulation and temperature sensors, enables an automated cold extraction process, ensuring that the tea powder essence dissolves quickly in water to achieve the best taste.
It achieves rapid cooling and uniform extraction, ensuring the consistency and stability of the taste of cold-brewed tea, and automatically controls the cold-brew time, simplifying the operation process.
Smart Images

Figure CN224387217U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of household appliance technology, specifically to a cold brew tea device. Background Technology
[0002] The tannins in tea leaves contribute to bitterness, while caffeine is difficult to extract, although the extraction rate of amino acids is relatively stable. Higher caffeine content in tea results in bitterness, while higher amino acid content produces a fresh and sweet flavor. Cold brew tea, made with cold water, is less bitter, slightly sweet, and refreshingly cool, making it perfect for summer. While ice cubes are commonly used for cold brewing, they melt quickly, limiting the required cold brewing time and making it difficult to maintain a consistent temperature for an extended period. Summary of the Invention
[0003] To address the aforementioned technical problems, this invention provides a cold brew tea device. This device allows the essence of tea powder to dissolve rapidly in water, resulting in cold brew tea with the best taste in a short time.
[0004] To achieve the objective of this utility model, the technical solution adopted by this utility model is as follows:
[0005] A cold brew tea apparatus includes a tea infuser, a tea strainer, an ultrasonic generator, and a refrigeration component. The upper end of the tea infuser is provided with a placement port for inserting the tea strainer, and the placement port is connected to an insertion channel. A water inlet is provided on the side wall of the insertion channel. The ultrasonic generator is installed on the side wall of the tea infuser. The refrigeration component includes a refrigeration compressor and an evaporator connected to the refrigeration compressor by a pipe. The evaporator is a coiled tube inside the tea infuser.
[0006] The water outlet of the hot spring pool described in this utility model is located at the bottom of the hot spring pool, and the water outlet is connected to the water tap through a water outlet pipe.
[0007] Preferably, the water inlet of the hot spring pool is connected to a water inlet pipe, the water inlet pipe is connected to a water source pipe and a drainage pipe through a three-way solenoid valve, the water outlet pipe is connected to a drinking pipe and the drainage pipe through a three-way solenoid valve, a water inlet pump is installed on the water inlet pipe, and a water outlet pump is installed on the drinking pipe.
[0008] More preferably, it also includes a water level probe one, a water level probe two, a temperature sensor, and a controller. The water level probe one is installed on the upper part of the hot spring pool, the water level probe two is installed on the lower part of the hot spring pool, the water level probe one, the water level probe two, and the temperature sensor are connected to the input terminal of the controller, and the three-way solenoid valve one, the three-way solenoid valve two, the inlet pump, and the outlet pump are connected to the output terminal of the controller.
[0009] The water inlet of this utility model is connected to a water purifier.
[0010] The soup pool of this utility model has a partition between the tea strainer and the evaporator, and the partition has multiple overflow holes evenly distributed on it.
[0011] The coiled tube described in this utility model is a stainless steel tube.
[0012] The ultrasonic generator described in this invention is installed near the tea strainer.
[0013] The beneficial effects of this utility model are as follows:
[0014] 1. This utility model uses a refrigeration compressor and evaporator for cooling, which is fast. It also uses high-frequency ultrasonic vibration to vibrate the tea powder, which allows the essence of the tea powder to dissolve quickly in water, so as to obtain cold-brewed tea with the best taste in a short time.
[0015] 2. This utility model forms a closed loop between the inlet and outlet of the extraction pool. During the extraction process, the water pump controls the water flow to keep flowing from the outlet to the inlet, realizing water circulation in the extraction pool. The repeated circulation can achieve the cold extraction effect more quickly.
[0016] 3. By installing temperature sensors and upper and lower water level probes in the hot water tank, the entire cold brewing process is automated, ensuring that the hot water tank always contains freshly brewed cold brew tea. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the cold brew tea device of this utility model.
[0018] Figure 2 This is a schematic diagram of the cold brew tea apparatus in Example 2.
[0019] Figure 3 This is a control principle diagram of the cold brew tea device in Example 3.
[0020] Attached labels: 1. Soup basin, 2. Tea strainer, 3. Ultrasonic generator, 4. Evaporator, 5. Refrigeration compressor, 6. Water purifier, 7. Faucet, 8. Outlet pipe, 9. Inlet pipe, 10. Drain pipe, 11. Water source pipe, 12. Drinking water pipe, 13. Three-way solenoid valve one, 14. Three-way solenoid valve two, 15. Inlet pump, 16. Outlet pump, 17. Insertion channel, 18. Inlet, 19. Outlet, 20. Temperature sensor, 21. Water level probe one, 22. Water level probe two, 30. Baffle. Detailed Implementation
[0021] To more clearly and in detail illustrate the objective technical solution of this utility model, the present utility model will be further described below through relevant embodiments. The following embodiments are merely illustrative of the implementation methods of this utility model and do not limit the scope of protection of this utility model.
[0022] Example 1
[0023] like Figure 1As shown, a cold brew tea device includes a water tank 1, a tea strainer 2, an ultrasonic generator 3, and a refrigeration component. The upper end of the water tank 1 is provided with a placement port for inserting the tea strainer 2. The placement port is connected to an insertion channel 17. The side wall of the insertion channel 17 is provided with a water inlet 18. The ultrasonic generator 3 is installed on the side wall of the water tank 1. The refrigeration component includes a refrigeration compressor 5 and an evaporator 4 connected to the refrigeration compressor 5 by a pipe. The evaporator 4 is a coiled tube inside the water tank 1.
[0024] First, the tea strainer 2 containing tea powder is placed into the soup pool 1 through the insertion channel 17, and water is introduced through the water inlet 18. After the soup pool 1 is filled with water, the refrigeration compressor 5 starts to work. When the liquid refrigerant of the refrigeration component flows through the evaporator 4, it will absorb the heat of the external tea water to cool the soup pool 1. Then, the ultrasonic generator 3 is turned on, and the tea powder is vibrated at a high frequency to make the essence inside the tea powder quickly dissolve in the water. After the extraction is completed, the ultrasonic generator stops working.
[0025] Example 2
[0026] This embodiment is based on embodiment 1:
[0027] The water outlet 19 of the hot spring pool 1 is located at the bottom of the hot spring pool 1, and the water outlet 19 is connected to the water tap 7 through the water outlet pipe 8. Water enters from the top and exits from the bottom, which can improve water circulation.
[0028] like Figure 2 As shown, the water inlet 18 of the hot spring pool 1 is connected to the water inlet pipe 9. The water inlet pipe 9 is connected to the water source pipe 11 and the drainage pipe 10 through a three-way solenoid valve 13. The water outlet pipe 8 is connected to the drinking pipe 12 and the drainage pipe 10 through a three-way solenoid valve 14. The water inlet pipe 9 is equipped with a water inlet pump 15, and the drinking pipe 12 is equipped with a water outlet pump 16.
[0029] The inlet 9 and outlet 8 of the hot water tank 1 form a closed loop. During the extraction process, the water pump 15 works to keep the water flowing from the outlet to the inlet, realizing water circulation in the hot water tank. The repeated circulation can achieve the cold extraction effect more quickly.
[0030] After extraction, the cold-brewed tea in pool 1 is ready for sale. Water pump 16 begins drawing water when the tap is turned on, and the extracted tea is dispensed from the tap. When the tap is turned off, water pump 16 stops working, and the tea dispensing ceases.
[0031] Example 3
[0032] This embodiment is based on embodiment 2:
[0033] like Figure 3As shown, it also includes a water level probe 1 21, a water level probe 22, a temperature sensor 20, and a controller. The water level probe 1 21 is installed on the upper part of the hot spring pool 1, and the water level probe 22 is installed on the lower part of the hot spring pool 1. The water level probe 1 21, the water level probe 22, and the temperature sensor 20 are connected to the input terminal of the controller, and the three-way solenoid valve 13 and the three-way solenoid valve 24 are connected to the output terminal of the controller.
[0034] Once the water level reaches its upper limit, water level probe 21 sends a signal to the controller to stop water injection and begin internal water circulation. The refrigeration compressor 5 starts working, the tea bath cools, and the ultrasonic generator 3 starts working, vibrating the tea powder at high frequency to quickly dissolve its essence in the water. Under the internal water circulation, the rapid flow of water carries the tea essence for rapid mixing. The water temperature is rapidly cooled by the refrigeration compressor 5. When the water temperature reaches the set temperature, temperature sensor 20 sends a signal to the controller, and the refrigeration compressor 5 stops working. Similarly, when the water temperature exceeds the set temperature, the refrigeration compressor 5 starts cooling again, repeating the cycle, operating only for internal circulation and cooling. By controlling the cold extraction time, the ultrasonic generator stops working after extraction is complete.
[0035] After extraction, the cold-brewed tea in pool 1 can be sold and consumed. When the water level reaches the lower limit, water level probe 22 sends a signal to the controller, and water is injected into the inlet to refill pool 1, repeating the cold-brew process.
[0036] The tea strainer can be cleaned separately or returned to its original position after the tea leaves are emptied. Water enters through inlet 18 to rinse the tea strainer, which then flows into the soup basin. Use a cleaning brush to clean the inner wall of the soup basin. Turn on faucet 7, and the cleaned water will flow out from the bottom of the soup basin and through faucet 7. Repeat this cycle for a period of time to ensure that the soup basin and pipes are thoroughly cleaned.
[0037] Example 5
[0038] This embodiment is based on embodiment 1:
[0039] The soup pool 1 is provided with a partition 30 between the tea strainer 2 and the evaporator 4, and the partition 30 is provided with multiple overflow holes.
[0040] Adding a baffle between the tea strainer and the evaporator creates a buffer zone for the water flow, allowing it to be evenly distributed and flow through the overflow hole of the baffle. This ensures that the tea soup, after being vibrated by ultrasound, is evenly carried into the cooling zone, further ensuring that the tea soup is mixed more evenly and thus ensuring that the tea extracted from the same batch has the same concentration and taste.
[0041] The coiled tube is made of stainless steel, and the water inlet 18 is connected to the water purifier 6 to ensure the cleanliness of the water.
[0042] The side wall of the soup pool 1 is equipped with multiple ultrasonic generators 3, and the ultrasonic generators are installed close to the tea strainer.
[0043] The ultrasonic generator used in this invention is an ultrasonic transducer with a power of 28KHz~100W; the refrigeration compressor is model ST35W24V; the inlet and outlet pumps are model 683K / ZL; the controller is ESB-STM32-PUMP V1.0; the water level probes are model M3x50-304; and the temperature sensor is model NTC 10K.
[0044] Connections not mentioned in this utility model employ conventional connection methods such as snap-fitting, bonding, riveting, threading, welding, or integral molding.
[0045] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.
Claims
1. A cold brew tea device, characterized by, The device includes a soup basin, a tea strainer, an ultrasonic generator, and a refrigeration assembly. The upper end of the soup basin is provided with a placement port for inserting the tea strainer, and the placement port is connected to an insertion channel. The side wall of the insertion channel is provided with a water inlet. The ultrasonic generator is installed on the side wall of the soup basin. The refrigeration assembly includes a refrigeration compressor and an evaporator connected to the refrigeration compressor by a pipe. The evaporator is a coiled tube inside the soup basin.
2. The cold brew tea device of claim 1, wherein, The water outlet of the hot spring pool is located at the bottom of the pool, and the water outlet is connected to a faucet via a water outlet pipe.
3. The cold brew tea device of claim 2, wherein, The water inlet of the hot spring pool is connected to a water inlet pipe, which is connected to a water source pipe and a drainage pipe via a three-way solenoid valve. The water outlet pipe is connected to a drinking pipe and the drainage pipe via a three-way solenoid valve. A water inlet pump is installed on the water inlet pipe, and a water outlet pump is installed on the drinking pipe.
4. The cold brew tea device of claim 3, wherein, It also includes a water level probe 1, a water level probe 2, a temperature sensor, and a controller. The water level probe 1 is installed on the upper part of the hot spring pool, and the water level probe 2 is installed on the lower part of the hot spring pool. The water level probe 1, the water level probe 2, and the temperature sensor are connected to the input terminal of the controller. The three-way solenoid valve 1, the three-way solenoid valve 2, the inlet pump, and the outlet pump are connected to the output terminal of the controller.
5. The cold brew tea device of claim 1, wherein, The water inlet is connected to the water purifier.
6. The cold brew tea device of claim 1, wherein, The hot water pool has a partition between the tea strainer and the evaporator, and the partition has multiple overflow holes evenly distributed on it.
7. The cold brew tea device of claim 1, wherein, The coiled tube is made of stainless steel.
8. The cold brew tea device of claim 1, wherein, The ultrasonic generator is installed near the tea strainer.