A constant pressure water control delivery structure and a coffee maker with the same

Abstract

A kind of steady voltage control water delivery structure and coffee maker with the structure, including first pipeline shell, second pipeline shell and valve body assembly;First pipeline shell and second pipeline shell are combined and assembled to form pipeline heat exchange combination, and pipeline heat exchange combination has complete water delivery channel and heat exchange part, water delivery channel forms water inlet and water outlet on the pipeline heat exchange combination, and heat exchange part is used for heat exchange between water delivery channel and outside;Valve body assembly is arranged at the water outlet end of pipeline heat exchange combination, for controlling the opening and closing of water outlet of pipeline heat exchange combination and water outlet flow.This utility model's steady voltage control water delivery structure is formed by the combination and assembly of first pipeline shell and second pipeline shell to form detachable water delivery channel structure, has the advantages of welding-free processing, more safe, low cost, convenient cleaning and maintenance etc., with pipeline waterway water delivery function, and high heat exchange efficiency, especially suitable for coffee maker to provide ideal brewing hot water.

Description

Technical Field

[0001] This utility model relates to the field of coffee making equipment technology, and in particular to a pressure-stabilized water conveying structure and a coffee making machine having the same structure. Background Technology

[0002] Coffee is a very common beverage in modern society. Different blends can produce different aromas and flavors, making it suitable for leisurely enjoyment during work breaks. Furthermore, due to its caffeine content, it has a stimulating effect, making it suitable for consumption during work hours to improve efficiency. Brewing coffee involves bringing hot water into contact with coffee grounds. In-depth research shows that brewing techniques significantly impact the taste of the brewed coffee, including the temperature and pressure of the hot water. Specifically, the ideal brewing temperature is around 93℃, and the ideal brewing pressure is around 9 bar. To achieve better coffee brewing results, existing high-quality coffee makers generally incorporate special water delivery structures. For example, Chinese patent CN115209771A discloses a coffee-making device and method that uses a special water delivery system to transport heated brewing water from the brewing water chamber to the coffee chamber to control the hot water temperature and brewing pressure, providing better hot water conditions for coffee brewing and having a positive effect on coffee brewing. However, the existing water supply structure design of this coffee machine is not very reasonable. The water supply pipe is made of a single thin tube, which has the disadvantages of low heat exchange efficiency, the need to be completely immersed in water for cooling, and the pipe structure is prone to clogging, difficult to clean, and easy to be damaged and scrapped. Therefore, the existing water supply structure of coffee machines and the corresponding coffee machines still have room for improvement and optimization to enhance the consumer experience of the products, and further optimization design is needed. Summary of the Invention

[0003] This utility model addresses the aforementioned problems by providing a pressure-stabilized and water-controlled delivery structure, comprising a first pipeline shell, a second pipeline shell, and a valve body assembly. The first pipeline shell and the second pipeline shell are assembled together to form a pipeline heat exchange assembly. The pipeline heat exchange assembly has a complete water delivery channel and a heat exchange section. The water delivery channel forms an inlet and an outlet on the pipeline heat exchange assembly, and the heat exchange section is used for heat exchange between the water delivery channel and the outside environment. The valve body assembly is located at the outlet end of the pipeline heat exchange assembly and is used to control the opening and closing of the water outlet and the water flow rate of the pipeline heat exchange assembly.

[0004] As a further explanation of this utility model, the first pipe housing and the second pipe housing are detachably assembled with each other, and at least one of their surfaces is provided with a water channel groove. After the first pipe housing and the second pipe housing are assembled together, the water channel groove serves as part of the water conveyance channel and connects to the inlet and outlet.

[0005] Furthermore, the heat exchange unit is disposed on the inner side of the water channel and / or on the outer side of the water channel.

[0006] Furthermore, the upper and lower sides of the water channel are sealed by a first sealing ring, and the water channel is connected to the inlet and outlet through micropores.

[0007] Furthermore, the heat exchange section and the first pipeline housing and / or the second pipeline housing are integrally formed from metal or alloy materials.

[0008] Furthermore, the heat exchange section is provided with several heat dissipation slots along the axial direction to improve heat exchange efficiency.

[0009] Furthermore, a valve core cavity is provided in the upper part of the first pipeline housing. The valve body assembly is assembled at the upper end of the first pipeline housing and includes a valve cover body, a valve core, a valve core spring, and a water distribution cover body. The valve cover body is sleeved on the upper end of the first pipeline housing. The valve core and the valve core spring are disposed in the valve core cavity. The water distribution cover body is fixed to the valve cover body and has a water distribution port. The connection between the water outlet and the water distribution port is controlled by the valve core.

[0010] Furthermore, the valve cover body is sealed to the first pipeline housing by a second sealing ring; the valve core is sealed to the first pipeline housing by a third sealing ring.

[0011] Furthermore, the water distribution cover has a mixing chamber, and an annular sedimentation tank is arranged inside the mixing chamber along the outside of the water distribution port. Several water distribution channels are formed between the water distribution port and the sedimentation tank, and the water distribution port is set higher than the sedimentation tank.

[0012] On the other hand, this utility model also provides a coffee maker, including the pressure-stabilizing and water-controlling conveying structure, the brewing water chamber and the coffee chamber as described above. The brewing water chamber is disposed at the lower part of the pressure-stabilizing and water-controlling conveying structure and is connected to the water inlet. The coffee chamber is disposed at the upper part of the pressure-stabilizing and water-controlling conveying structure and is connected to the water outlet.

[0013] The beneficial effects of this utility model are:

[0014] This utility model's pressure-stabilized water delivery structure forms a complete water delivery channel structure through the assembly of a first pipe shell and a second pipe shell. While possessing the function of pipeline water delivery, it also forms a detachable structure, offering advantages such as weld-free processing, enhanced safety, lower cost, and ease of cleaning and maintenance. It avoids the problems of existing technologies involving integral pipe components with winding and welding, which are difficult to clean and prone to failure. This extends the service life of the pressure-stabilized water delivery structure and its application equipment. Furthermore, the structural design of this embodiment is more conducive to heat conduction between the water in the delivery channel and the external environment, improving heat exchange efficiency and facilitating the control of the delivered water temperature. Combined with the valve assembly structure, it outputs suitable water temperature and flow rate, better meeting practical application needs, and is particularly suitable for providing ideal hot water for coffee making machines. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the internal structure of the pressure-stabilizing and water-controlling conveying structure according to an embodiment of this utility model;

[0016] Figure 2 This is a diagram showing the assembly state of the pressure-stabilizing and water-controlling conveying structure according to an embodiment of this utility model;

[0017] Figure 3 This is a cross-sectional view of the pressure-stabilizing and water-controlling conveying structure according to an embodiment of the present invention;

[0018] Figure 4 This is a structural diagram of a coffee maker according to an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the water-dividing cover structure according to an embodiment of the present utility model;

[0020] Figure 6 This is a schematic diagram of the direction of water flow for the coffee maker according to an embodiment of the present invention;

[0021] Figure 7 A cross-sectional structural diagram of an existing coffee-making device.

[0022] Reference numerals: 1. First pipe housing; 2. Second pipe housing; 3. Water supply channel; 4. Heat exchange section; 5. Inlet; 6. Outlet; 7. Water channel groove; 8. First sealing ring; 9. Micropore; 10. Heat dissipation groove hole; 11. Valve core cavity; 12. Valve cover body; 13. Valve core; 14. Valve core spring; 15. Water distribution cover body; 15. Water distribution port; 16. Second sealing ring; 17. Third sealing ring; 18. Brewing water chamber; 19. Coffee chamber; 20. Mixing chamber; 21. Sedimentation tank; 22. Water distribution groove. Detailed Implementation

[0023] Example:

[0024] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0026] As attached Figures 1-6 As shown, a pressure-stabilized and water-controlled conveying structure of this embodiment includes a first pipeline housing 1, a second pipeline housing 2, and a valve body assembly. The first pipeline housing 1 and the second pipeline housing 2 are assembled together to form a pipeline heat exchange assembly. The pipeline heat exchange assembly has a complete water conveying channel 3 and a heat exchange section 4. The water conveying channel 3 forms an inlet 5 and an outlet 6 on the pipeline heat exchange assembly. The heat exchange section 4 is used for heat exchange between the water conveying channel 3 and the outside environment. The valve body assembly is located at the outlet 6 end of the pipeline heat exchange assembly and is used to control the opening and closing of the water outlet and the water flow rate of the pipeline heat exchange assembly.

[0027] Because this pressure-stabilized water conveying structure primarily conveys high-temperature water and is located in a narrow water pipeline, it is highly susceptible to scale buildup and blockage in practical applications due to the alternating hot and cold water within the water channel 3. The pressure-stabilized water conveying structure in this embodiment utilizes the flow-limiting effect of the narrow water channel 3 to ensure stable high-temperature water delivery pressure while simultaneously achieving heat exchange to lower the water temperature, allowing it to be delivered at a certain pressure to meet specific water usage needs. Therefore, this embodiment's pressure-stabilized water conveying structure forms a complete water channel 3 structure through the combination and assembly of the first pipe housing 1 and the second pipe housing 2. This structure provides water conveying functionality while also being detachable, eliminating the need for welding, enhancing safety, reducing cost, and facilitating cleaning and maintenance. It avoids the problems of existing technologies where integral pipe components are wound and welded, making cleaning difficult and prone to failure, thus extending the service life of the pressure-stabilized water conveying structure and its application equipment. Furthermore, the structural design of the pressure-stabilized water conveying structure in this embodiment is more conducive to the heat conduction between the water in the water conveying channel 3 and the outside world, improving the heat exchange efficiency and facilitating the control of the water temperature of the conveyed water. Combined with the valve body assembly structure, it outputs a suitable water temperature and flow rate, better meeting the needs of practical applications.

[0028] As one feasible implementation, the first pipe housing 1 and the second pipe housing 2 are fitted together. At least one side of the outer surface of the first pipe housing 1 and the inner surface of the second pipe housing 2 is provided with a water channel 7. After the first pipe housing 1 and the second pipe housing 2 are assembled together, the water channel 7 serves as part of the water conveyance channel 3, connecting to the inlet 5 and the outlet 6. (See attached diagram) Figure 1 As shown, in this embodiment, the outer side of the first housing is provided with a water channel 7 spiraling upwards from bottom to top. The lower end of the water channel 7 is perforated and connected to the inlet 5, while the upper end is perforated and connected to the outlet 6. The annular second housing 2 is fitted over the first housing 1, forming a closed water channel with the water channel 7. This serves as part of the water supply channel 3, transporting hot water from the inlet 5 to the outlet 6. During this process, the hot water in the water channel 7 undergoes efficient heat exchange with the outside environment through the heat exchange section 4, thus lowering the water temperature. Through reasonable structural design and control, the temperature of the hot water output from the outlet 6 can meet the predetermined usage requirements. It is easily understood that, based on the detachable structure of the first housing 1 and the second housing 2 of this invention to form the water channel, the water channel 7 can also be provided inside the second housing 2 and then inserted into the first housing 1, or the water channel can be formed by combining these components. The assembly between the first pipeline housing 1 and the second pipeline housing 2 is a detachable assembly, such as a snap-fit ​​assembly or a threaded connection, etc. The assembly can form a water channel 3 when assembled, and the water channel 3 can be easily cleaned when disassembled. The specific fixing assembly method of the two is not limited here.

[0029] See appendix Figure 1 As shown, in this embodiment, the heat exchange unit 4 is located inside the water channel 7. In actual use, the heat exchange unit 4 is partially or completely immersed in cold water. During the transportation process, the hot water in the water channel 7 is rapidly transferred to the external cold water through the heat exchange unit 4 via a large amount of heat, achieving rapid cooling of the transported hot water. It is easily understood that, based on the structural design of this utility model, the heat exchange unit 4 can also be located outside the water channel 7, exchanging heat with the outside environment. The location of the heat exchange unit 4 can be flexibly adjusted according to different application scenarios and needs to achieve the best cooling effect.

[0030] See appendix Figure 3As shown, the upper and lower sides of the water channel 7 are sealed by the first sealing ring 8, and the water channel 7 is connected to the inlet 5 and the outlet 6 through micro-holes 9. As described above, the middle section of the water conveying channel 3 in this embodiment is formed by the combination and assembly of the first pipe housing 1 and the second pipe housing 2. In order to ensure the sealing of the combined water pipe, the first sealing ring 8 is provided on the upper and lower sides of the water channel 7. After the first pipe housing 1 and the second pipe housing 2 are combined and assembled, the first sealing ring 8 is squeezed to achieve a seal between them, preventing the hot water from leaking through gaps and ensuring that the water flows in the predetermined path. In this embodiment, the water channel 7 is connected to the inlet 5 and the outlet 6 through the micro-holes 9. The diameter of the micro-holes 9 is about 1.5mm, which also plays a role in flow restriction and pressure maintenance in the entire pressure-stabilizing and water-controlling conveying structure, so that the final output from the outlet 6 is within the set flow range and the set water pressure is maintained.

[0031] In a preferred embodiment, the heat exchange section 4 is integrally formed with the first pipe housing 1 and / or the second pipe housing 2 from a metal or alloy material. Here, the heat exchange section 4 is integrally formed with either the first pipe housing 1 or the second pipe housing 2. The heat exchange area of ​​the water in the water channel 7, combined with the high thermal conductivity of the metal or alloy material, ensures that heat is rapidly transferred from the hot water to the cooling medium, thereby achieving rapid cooling. This not only improves heat exchange efficiency but also enhances the stability and durability of the structure. In practical applications, partial immersion of the heat exchange section 4 is sufficient to meet heat dissipation requirements.

[0032] As attached Figure 1 As shown, based on the method of heat dissipation and cooling through the heat exchange section 4 in this embodiment, in order to further improve the heat exchange efficiency between the hot water in the water channel 7 and the outside, a plurality of heat dissipation slots 10 are provided along the axial direction on the heat exchange section 4 to improve the heat exchange efficiency, thereby increasing the contact surface area between the heat exchange section 4 and the immersing cold substance and further improving the heat dissipation and cooling effect on the transported hot water.

[0033] In this embodiment of the pressure-stabilized water supply structure, high-pressure hot water enters through the inlet 5 at the bottom of the structure and is transported upwards. During the transport process, heat dissipation and pressure stabilization are achieved in the intermediate section, and finally, hot water with suitable temperature and pressure is output from the outlet 6 at the top of the structure. To achieve automatic opening and closing control of a predetermined water pressure, a valve core cavity 11 is provided on the upper part of the first pipeline housing 1 in this embodiment. The valve body assembly is assembled on the upper end of the first pipeline housing 1 and includes a valve cover 12, a valve core 13, a valve core spring 14, and a water distribution cover 15. The valve cover 12 is sleeved on the upper end of the first pipeline housing 1. The valve core 13 and the valve core spring 14 are disposed in the valve core cavity 11. The water distribution cover 15 is fixed to the valve cover 12 and has a water distribution port 151. The valve core 13 controls the connection and disconnection between the outlet 6 and the water distribution port. As described above, when the hot water, after being cooled by heat dissipation, flows to the valve core 13, the water temperature is suitable. However, at this time, the entire valve assembly is in a closed state under the action of the valve core spring 14. It will only open automatically when the water pressure is sufficient to push the valve core 13 to move downward against the force of the valve core spring 14. The hot water at the suitable temperature is then sent upward at a predetermined water pressure, thereby realizing the automatic control of the outlet water temperature and water pressure by the pressure stabilizing and water control conveying structure to meet the predetermined water demand.

[0034] Similarly, some components need to maintain a relative seal to prevent leakage or seepage. This includes sealing the valve cover 12 and the first pipe housing 1 with a second sealing ring 16 to prevent hot water from leaking through the gap between the valve cover 12 and the first pipe housing 1. Also, a third sealing ring 17 seals the valve core 13 and the first pipe housing 1 to prevent the delivered hot water from seeping into the valve core cavity 11 and corroding components such as the valve core spring 14, thus ensuring the operational stability and water control accuracy of the pressure-stabilized water supply structure.

[0035] As described above, the pressure-stabilizing and water-controlling conveying structure of this utility model is suitable for scenarios requiring specific water conveying control, such as its application in coffee makers. It controls the temperature, pressure, and flow rate of hot water used for brewing coffee to improve the brewing effect. Specifically, the coffee maker of this embodiment includes the pressure-stabilizing and water-controlling conveying structure, a brewing water chamber 18, and a coffee chamber 19 as described above. The brewing water chamber 18 is located at the lower part of the pressure-stabilizing and water-controlling conveying structure and is connected to the inlet 5. The coffee chamber 19 is located at the upper part of the pressure-stabilizing and water-controlling conveying structure and is connected to the outlet 6. The brewing water chamber 18 is used to contain the hot water required for brewing coffee. Heating the brewing chamber allows the hot water to be conveyed upwards at high temperature and pressure. The pressure-stabilizing and water-controlling conveying structure controls the flow rate and temperature of the water to ensure that the brewing water reaches the ideal temperature, pressure, and flow rate before entering the coffee chamber 19. Finally, the water is delivered through the water distribution cover 15 to brew the coffee source (coffee powder) in the coffee chamber 19.

[0036] See the appendix for details. Figure 5 and 6 As shown, the water distribution cover has a mixing chamber 20, the water distribution port 151 is located in the middle of the mixing chamber 20, a sedimentation tank 21 is arranged around the outside of the water distribution port 151, a plurality of water distribution troughs 22 are formed between the water distribution port 151 and the sedimentation tank 21, and the water distribution port 151 is set higher than the sedimentation tank 21. When the coffee maker is in use, the hot water for brewing is cooled once at the heat exchange section 4. Based on the fact that the temperature of the hot water coming out of the water outlet 151 under standard atmospheric conditions in the mixing chamber 20 is approximately 100°C, the hot water, after being brewed, is diverted by the water distribution tank 22, changing from vertical flow to flow towards the sedimentation tank 21. This increases the mixing effect with the low-temperature brewing water originally stored in the mixing chamber, further improving the stability and balance of the extraction water temperature. This allows the hot water to be better stabilized at a suitable brewing temperature of around 90°C, achieving a water temperature balance effect. On the other hand, based on the setting of the annular sedimentation tank 21 outside the water outlet 151, when the coffee maker is not in use, the sediment in the mixing chamber will settle in the relatively low sedimentation tank 21, preventing negative pressure backflow into the water supply channel 3 and causing pipe blockage, thus reducing the frequency of cleaning and maintenance. In practical applications, through specific pressure-stabilizing and water-controlling conveying structures, the water temperature of the coffee maker can be controlled at around 93℃ and the brewing water pressure at around 9 bar, in order to achieve ideal coffee brewing conditions, improve the brewing quality of coffee, ensure the taste and flavor of coffee, and enable the coffee maker to operate stably under different heat source conditions (such as stovetops or induction cooktops), providing high-quality coffee.

[0037] The above description only illustrates preferred embodiments of the present invention and should not be construed as limiting the scope of the claims. The present invention is not limited to the above embodiments, and variations in its specific structure are permitted. In short, all changes made within the scope of the independent claims of the present invention are within the scope of protection of the present invention.

Claims

1. A pressure-stabilized and water-controlled conveying structure, characterized in that: The system includes a first pipe housing, a second pipe housing, and a valve body assembly. The first pipe housing and the second pipe housing are assembled together to form a pipe heat exchange assembly. The pipe heat exchange assembly has a complete water conveying channel and a heat exchange section. The water conveying channel forms an inlet and an outlet on the pipe heat exchange assembly. The heat exchange section is used for heat exchange between the water conveying channel and the outside environment. The valve body assembly is located at the outlet end of the pipe heat exchange assembly and is used to control the opening and closing of the water outlet and the water flow rate of the pipe heat exchange assembly.

2. The pressure-stabilizing and water-controlling conveying structure according to claim 1, characterized in that: The first pipe housing and the second pipe housing are detachably assembled with each other, and at least one of their surfaces is provided with a water channel. After the first pipe housing and the second pipe housing are assembled together, the water channel serves as part of the water conveyance channel and connects to the inlet and outlet.

3. The pressure-stabilizing and water-controlling conveying structure according to claim 2, characterized in that: The heat exchange unit is located inside the water channel and / or outside the water channel.

4. The pressure-stabilizing and water-controlling conveying structure according to claim 2, characterized in that: The upper and lower sides of the water channel are sealed by a first sealing ring, and the water channel is connected to the inlet and outlet through micropores.

5. The pressure-stabilizing and water-controlling conveying structure according to claim 1, characterized in that: The heat exchange section and the first pipeline housing and / or the second pipeline housing are integrally formed from metal or alloy materials.

6. The pressure-stabilizing and water-controlling conveying structure according to claim 1, characterized in that: The heat exchange section has several heat dissipation slots along the axial direction to improve heat exchange efficiency.

7. The pressure-stabilizing and water-controlling conveying structure according to claim 1, characterized in that: The upper part of the first pipeline housing has a valve core cavity. The valve body assembly is assembled on the upper end of the first pipeline housing and includes a valve cover, a valve core, a valve core spring, and a water distribution cover. The valve cover is sleeved on the upper end of the first pipeline housing. The valve core and the valve core spring are disposed in the valve core cavity. The water distribution cover is fixed on the valve cover and has a water distribution port. The valve core controls the connection between the water outlet and the water distribution port.

8. The pressure-stabilizing and water-controlling conveying structure according to claim 7, characterized in that: The valve cover body is sealed to the first pipeline housing by a second sealing ring; the valve core is sealed to the first pipeline housing by a third sealing ring.

9. The pressure-stabilizing and water-controlling conveying structure according to claim 7, characterized in that: The water distribution cover has a water mixing chamber, and an annular sedimentation tank is arranged inside the water mixing chamber along the outside of the water distribution port. Several water distribution channels are formed between the water distribution port and the sedimentation tank, and the water distribution port is set higher than the sedimentation tank.

10. A coffee maker, characterized in that: The invention includes the pressure-stabilized water supply structure, the brewing water chamber, and the coffee chamber as described in any one of claims 1-9, wherein the brewing water chamber is disposed at the lower part of the pressure-stabilized water supply structure and is connected to the water inlet, and the coffee chamber is disposed at the upper part of the pressure-stabilized water supply structure and is connected to the water outlet.

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