High-water-level coffee machine
By using a combination of check valves, throttling components and heating components in high-water level coffee machines, the problem of water flowing out automatically due to pressure difference in high-level water tank coffee machines is solved, and the efficient water control effect with low cost and simple structure is achieved.
Patent Information
- Application Number
- CN202421600720.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-08
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-08
AI Technical Summary
The existing high-level water tank coffee machine automatically flows out due to pressure difference, and the cost is high.
The combination of a check valve, a throttling member and a heating member is adopted to form an air column through the throttling member, and the heating member increases the water pressure. The check valve controls the water flow direction to ensure that the water does not flow out automatically due to the pressure difference.
It realizes that the water tank water is prevented from automatically flowing out without using solenoid valves or water pumps under high water levels, reduces equipment costs and simplifies structural design.
Smart Images
Figure CN222968340U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of small household appliances, and particularly relates to a high-water-level coffee machine. Background Art
[0002] For coffee machines with the water tank placed above in the market currently, most of them cut off the waterway connection through solenoid valves or water pumps to prevent the water in the high-position water tank from flowing out from the water outlet under the action of pressure, so as to avoid the automatic water outflow of the water tank due to the pressure difference. The coffee machines in this way have high costs. In the U-shaped waterway of a drip coffee machine, the maximum water level of the water tank must be lower than the horizontal height of the water outlet. Because if the water level in the water tank is higher than the water outlet, the water above the water outlet will flow out from the water outlet under the action of atmospheric pressure. Summary of the Utility Model
[0003] In view of the above problems existing in the prior art, the purpose of the embodiments of this application is to provide a high-water-level coffee machine in which the water in the water tank will not automatically flow out due to the pressure difference without a battery valve and a water pump.
[0004] The technical solution adopted in the embodiments of this application is a high-water-level coffee machine, which includes a water tank, a water outlet nozzle and a water pipe. The height of the water tank is higher than the height of the water outlet nozzle. The high-water-level coffee machine further includes:
[0005] A one-way valve, which is arranged in the water pipe. The one-way valve divides the water pipe into a water inlet pipe connected to the water tank and a water outlet pipe connected to the water outlet nozzle. The one-way valve is used to control the water in the water pipe to only flow from the water inlet pipe into the water outlet pipe;
[0006] A throttling component, which is arranged in the water inlet pipe and is used to throttle the water flowing into the water inlet pipe from the water tank, so that an air column is formed in the part of the water inlet pipe downstream of the throttling component;
[0007] A heating component, which is used to heat the water in the water outlet pipe, so that the water in the water outlet pipe is heated up and partially forms water vapor, thereby increasing the water pressure in the water outlet pipe to push the one-way valve to close, and the water in the water outlet pipe flows towards the water outlet nozzle and flows out from the water outlet nozzle.
[0008] In an optional embodiment, a throttling hole is arranged in the throttling component, and the aperture of the throttling hole is smaller than the inner diameter of the water inlet pipe. In this way, the cross-sectional area of water flow can be reduced at the throttling hole, which is beneficial to the formation of an air column below the throttling component.
[0009] In an optional embodiment, the aperture of the throttling hole is 1 / 4 - 1 / 2 of the inner diameter of the water inlet pipe. The aperture range of this throttling hole is reasonable, which is beneficial to the generation and maintenance of the air column.
[0010] In an alternative embodiment, the throttling component includes a body, the outer peripheral wall of the body is adapted to the inner wall of the water inlet pipe, the body is disposed in the water inlet pipe, and the outer peripheral wall of the body is sealingly attached to the inner wall of the water inlet pipe. A through hole penetrating both ends of the body is provided in the body, the through hole is a variable-diameter hole, the variable-diameter hole at least includes a first hole section and a second hole section, and the aperture of the first hole section is smaller than that of the second hole section to form the throttling hole. The structure of the throttling component is reasonable, which is not only beneficial to the formation of an air column but also convenient for processing and manufacturing.
[0011] In an alternative embodiment, the water inlet pipe extends vertically, and its upper end is connected to the water outlet at the bottom of the water tank; and / or
[0012] The water outlet pipe includes a first pipe section extending horizontally and a second pipe section extending vertically. The first end of the first pipe section is bent upward to be connected to the lower end of the water inlet pipe, the second end of the first pipe section is connected to the lower end of the second pipe section, and the upper end of the second pipe section is bent outward and connected to the water outlet nozzle. In this way, the whole water pipe forms an approximately U-shaped structure, making the structure compact and facilitating the reduction of the overall machine volume.
[0013] In an alternative embodiment, the throttling component is disposed near the upper end of the water inlet pipe. This facilitates sufficient space in the water inlet pipe to form an air column.
[0014] In an alternative embodiment, the one-way valve is a float valve, the float valve includes a valve body and a float. A water outlet channel communicating the water inlet pipe and the water outlet pipe is provided in the valve body. The float is disposed below the water outlet channel and rises and falls under the pushing action of the water in the water outlet pipe to block or disengage from the water outlet channel, so as to close or open the float valve. The structure of the float valve is simple, and it is convenient to control the opening and closing by using the water volume and water pressure in the water outlet pipe.
[0015] In an alternative embodiment, the heating component includes a heating pipe, the heating pipe is attached to the outside of the first pipe section and extends along the first pipe section; the material of the part of the first pipe section where the heating pipe is provided is a heat-conducting metal. The heat of the heating pipe can be conveniently transferred to the water flowing through the first pipe section through the heat-conducting metal.
[0016] Compared with the prior art, the beneficial effects of the embodiments of the present application are as follows: In the high-water-level coffee machine of the embodiments of the present application, by providing a throttling component in the water inlet pipe, the cross-sectional size of the water inlet can be reduced to form an air column below the throttling component. Due to the existence of the air column, the water in the water tank at a high position will not flow out of the water outlet nozzle due to the pressure difference. The structure of the present application is simple, the cost is low, and the installation and use are convenient.
[0017] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory and are not intended to limit the present application.
[0018] An overview of various implementations or examples of the technology described in this application is not a full disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In the drawings, which are not necessarily to scale, the same reference numerals may describe similar components in different views. The drawings generally illustrate various embodiments by way of example and not limitation, and are used in conjunction with the description and the claims to explain the embodiments of the application being claimed. Where appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts.
[0020] Figure 1 It is a schematic structural diagram of a high-water-level coffee machine according to an embodiment of the present application.
[0021] Figure 2 It is a cross-sectional view of a throttling component according to an embodiment of the present application.
[0022] Reference Numerals:
[0023] 1 - water tank; 2 - water inlet pipe; 3 - water outlet pipe; 31 - first pipe section; 32 - second pipe section; 4 - water outlet nozzle; 5 - throttling component; 51 - throttling orifice; 52 - second hole section; 6 - check valve; 61 - valve body; 62 - float ball; 7 - heating component; 8 - air column; 9 - funnel; 10 - coffee cup. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] In order to make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.
[0025] Unless otherwise defined, technical terms or scientific terms used in this application shall have the ordinary meanings understood by those of ordinary skill in the art to which this application pertains. The terms "first", "second" and similar words used in this application do not denote any order, quantity or importance, but are only used to distinguish different components. Words such as "comprising" or "including" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.
[0026] To keep the following description of the embodiments of this application clear and concise, detailed descriptions of known functions and known components are omitted in this application.
[0027] Embodiments of this application provide a high-water-level coffee machine. As Figure 1 shown, the high-water-level coffee machine includes a water tank 1, a water outlet nozzle 4 and a water pipe. The height of the water tank 1 is higher than the height of the water outlet nozzle 4.
[0028] Continuing to refer to Figure 1 , the high-water-level coffee machine further includes a one-way valve 6, a throttling component 5 and a heating component 7. The one-way valve 6 is disposed in the water pipe. The one-way valve 6 divides the water pipe into a water inlet pipe 2 connected to the water tank 1 and a water outlet pipe 3 connected to the water outlet nozzle 4, and is used to control the water in the water pipe to flow only in the direction from the water inlet pipe 2 to the water outlet pipe 3. That is, a one-way valve 6 is provided between the water inlet pipe 2 and the water outlet pipe 3 to control whether the water in the water inlet pipe 2 enters the water outlet pipe 3 through the one-way valve 6. The throttling component 5 is disposed in the water inlet pipe 2 and is used to throttle the water when the water in the water tank 1 enters the water inlet pipe 2, so that the flow cross-section of the water becomes smaller, and an air column 8 is formed in the part of the water inlet pipe 2 downstream of the throttling component 5. The heating component 7 is used to heat the water in the water outlet pipe 3, so that the water in the water outlet pipe 3 is heated up and at least partially forms water vapor, thereby increasing the water pressure in the water outlet pipe 3 to push the one-way valve 6 to close, and the water in the water outlet pipe 3 flows in the direction of the water outlet nozzle 4 and flows out through the water outlet nozzle 4. As the water in the water outlet pipe 3 continuously flows out, the water pressure in the water outlet pipe 3 drops, and the one-way valve 6 will reopen. The cold water in the water inlet pipe 2 flows into the water outlet pipe 3 and is heated again by the heating pipe. After the water is heated to a certain level, the one-way valve 6 is closed again and is pushed out from the water outlet nozzle 4. Such a cycle can enable hot water to continuously flow out from the water outlet nozzle 4 without a water pump and solenoid valve control, so as to realize the brewing of coffee powder in a funnel 9 provided below the water outlet nozzle 4.
[0029] In the high-water-level coffee machine according to the embodiments of the present application, by arranging a throttling component 5 in the water inlet pipe 2, the local flow cross-section of the water inlet pipe 2 is made smaller, that is, used to reduce the size of the water inlet cross-section. When water flows from the water tank 1 through the throttling component 5, the water path becomes smaller, but after flowing out of the throttling component 5 and entering the water inlet pipe 2, the water path suddenly becomes larger, generating air bubbles, thereby forming an air column 8 below the throttling component 5. Due to the existence of the air column 8, the water in the water tank 1 at a high position will not flow out of the water outlet nozzle 4 due to the pressure difference (the liquid level of the water tank 1 is higher than the water outlet end and can also maintain pressure balance). The structure of the present application is simple and the cost is low.
[0030] In addition, in the present application, the water tank 1 is designed at a height higher than the water outlet nozzle 4, which not only solves the limitation of the appearance structure layout of the drip coffee machine in the market where the highest water level of the water tank 1 of the drip coffee machine is lower than the height of the water outlet nozzle 4, but also makes the appearance structure layout of the coffee machine of the present application more reasonable and has less limitation.
[0031] In some embodiments, a throttling hole 51 is provided in the throttling component 5, and the aperture of the throttling hole 51 is smaller than the inner diameter of the water inlet pipe 2. By setting the throttling hole 51 with an aperture smaller than the inner diameter of the water inlet pipe 2, the flow cross-section of water can be reduced at the throttling hole 51, thereby facilitating the formation of an air column 8 below the throttling component 5 in the water inlet pipe 2.
[0032] Furthermore, the aperture of the throttling hole 51 can be 1 / 4 to 1 / 2 of the inner diameter of the water inlet pipe 2. This aperture range of the throttling hole 51 is reasonable and is beneficial to the generation and maintenance of the air column 8.
[0033] In some embodiments, as Figure 2 shown, the throttling component 5 includes a body, and the outer peripheral wall of the body is adapted to the inner wall of the water inlet pipe 2, so that when the body is arranged in the water inlet pipe 2, the outer peripheral wall of the body can be hermetically attached to the inner wall of the water inlet pipe 2 to prevent the water in the water inlet pipe 2 from passing between the body and the water inlet pipe 2. A through hole penetrating both ends of the body is provided in the body, and the through hole is a variable-diameter hole, and the variable-diameter hole at least includes a first hole section and a second hole section 52. The aperture of the first hole section is smaller than that of the second hole section 52 and forms the throttling hole 51. Among them, when the throttling component 5 is installed in the water inlet pipe 2, the positional relationship between the first hole section and the second hole section 52 is not limited, and both can be above or below. The purpose of setting the second hole section 52 is for the convenience of processing and manufacturing.
[0034] It can be understood that in addition to the first hole section and the second hole section 52, the through hole may further include a third hole section. The first hole section is located between the second hole section 52 and the third hole section. The aperture of the third hole section is the same as that of the second hole section 52 and is also larger than the aperture of the first hole section. Due to the existence of the wall thickness of the body, the apertures of the second hole section 52 and the third hole section are both smaller than the inner diameter of the water inlet pipe 2. Although the second hole section 52 and the third hole section can also play a certain throttling role, the main throttling role is played by the first hole section. The existence of the second hole section 52 and the third hole section is mainly for the convenience of manufacturing. When the throttling component 5 is made of a plastic part, it is avoided that the entire throttling component 5 is too small due to the too small axial dimension of the first hole section, which is not conducive to processing and forming by a mold.
[0035] In some embodiments, as Figure 1 shown, the water inlet pipe 2 extends vertically, and its upper end is connected to the water outlet at the bottom of the water tank 1. The water outlet pipe 3 includes a first pipe section 31 extending horizontally and a second pipe section 32 extending vertically. The first end of the first pipe section 31 is bent upward and connected to the lower end of the water inlet pipe 2. The second end of the first pipe section 31 is connected to the lower end of the second pipe section 32. The upper end of the second pipe section 32 is bent outward and connected to the water outlet nozzle 4. In this way, the entire water pipe forms an approximately U-shaped structure, which improves the structural compactness and is conducive to reducing the volume of the whole machine.
[0036] Continuing to combine Figure 1 , the one-way valve 6 is provided at the lower end of the water inlet pipe 2, and the throttling component 5 is arranged near the upper end of the water inlet pipe 2. A relatively long air column 8 is formed between the one-way valve 6 and the throttling component 5.
[0037] In some embodiments, the one-way valve 6 can be a float valve. The float valve includes a valve body 61 and a float 62. The valve body 61 is provided with a water outlet channel connecting the water inlet pipe 2 and the water outlet pipe 3. The float 62 is arranged below the water outlet channel and rises and falls under the pushing action of the water in the water outlet pipe 3 to block or disengage from the water outlet channel, so as to close or open the float valve. When the heating component 7 is not started and the water volume in the water outlet pipe 3 is lower than a certain amount and cannot make the float 62 float upward to a state where the water outlet channel of the float valve is closed, the float 62 of the float valve is in a descending state of disengaging from the water outlet channel and the float valve is opened. When the water volume in the water outlet pipe 3 increases to a certain amount, the water in the water outlet pipe 3 pushes the float 62 to rise to block the water outlet channel of the float valve, and the float valve is closed. In this way, the water in the water tank 1 can enter the water outlet pipe 3 through the throttling component 5 and the one-way valve 6; when the heating component 7 is started, the heating component 7 heats the water in the water outlet pipe 3 into hot water and at least part of it is heated into water vapor, so as to increase the pressure of the water in the water outlet pipe 3. When the water pressure in the water outlet pipe 3 increases to the first pressure threshold, it will push the float 62 to rise and block the water outlet channel of the float valve, so as to close the float valve.
[0038] In some embodiments, the heating component 7 includes a heating tube that abuts against the outer side of the first pipe segment 31 and extends along the first pipe segment 31; the material of the portion of the first pipe segment 31 where the heating tube is disposed is a heat-conducting metal. In this way, it is beneficial to quickly conduct the heat of the heating tube to the water flowing through the first pipe segment 31, so that the water is heated to a temperature that meets the requirements for coffee brewing.
[0039] The working principle of the high-water-level coffee machine according to the embodiments of the present application is as follows:
[0040] After the user adds water to the water tank 1, the water in the water tank 1 continuously flows into the water inlet pipe 2 and then into the water outlet pipe 3. Since the aperture of the throttle hole 51 of the throttle component 5 in the water inlet pipe 2 is small, air will be generated and an air column 8 will be formed after the water flows through the throttle component 5 and then into the water inlet pipe 2. As the water volume in the water outlet pipe 3 increases and the air column 8 is formed, the pressure of the entire water path will reach equilibrium. Thus, even if the water level in the water tank 1 is higher than the water outlet nozzle 4, the water in the water tank 1 will not flow out from the water outlet nozzle 4. After the power is turned on, the coffee machine starts to work, and the heating tube starts to heat. When the water in the water outlet pipe 3 is heated to a certain extent, the water will be heated into water vapor, and the water pressure in the water outlet pipe 3 becomes larger. At this time, the one-way valve 6 in the water inlet pipe 2 is pressed and closed. The water pressure can only push forward in the direction of the water outlet nozzle 4, and the heated water is pushed up and flows out from the water outlet nozzle 4 and into the funnel 9 containing coffee powder. The hot water extracts the coffee powder into coffee liquid, which then flows into the coffee cup 10.
[0041] Whenever the hot water in the water outlet pipe 3 is pushed out, the water pressure in the water outlet pipe 3 will become smaller, and the one-way valve 6 will reopen. The cold water in the water tank 1 will flow into the water outlet pipe 3 again through the water inlet pipe 2 and be heated by the heating tube. After the water is heated to a certain extent, it is pushed out again, and so on, so that the water in the water tank 1 is continuously heated and pushed to the water outlet nozzle 4, realizing the drip filtration of the coffee powder in the funnel 9.
[0042] The above description is intended to be illustrative rather than restrictive, and those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present disclosure. Moreover, the above examples (or one or more of their solutions) can be used in combination with each other, and considering these embodiments, they can be combined with each other in various combinations or permutations.
Claims
1. A high water level coffee machine, comprising a water tank (1), a water outlet (4) and a water pipe, wherein the height of the water tank (1) is higher than the height of the water outlet (4), and characterized in that: The high water level coffee machine also includes: a one-way valve (6) disposed in the water pipe, the one-way valve (6) dividing the water pipe into an inlet pipe (2) connected to the water tank (1) and an outlet pipe (3) connected to the water outlet nozzle (4), the one-way valve (6) being used to control the water in the water pipe to flow only from the inlet pipe (2) into the outlet pipe (3); a throttling component (5) disposed in the water inlet pipe (2) and used for throttling the water in the water tank (1) when it enters the water inlet pipe (2), so that an air column (8) is formed in a portion of the water inlet pipe (2) located downstream of the throttling component (5); The heating component (7) is used to heat the water in the water outlet pipe (3), so that the water in the water outlet pipe (3) is heated and partially forms water vapor, thereby increasing the water pressure in the water outlet pipe (3) to push the one-way valve (6) to close, and the water in the water outlet pipe (3) flows toward the water outlet nozzle (4) and flows out from the water outlet nozzle (4).
2. The high water level coffee machine according to claim 1, characterized in that: A throttling hole (51) is provided in the throttling component (5), and the diameter of the throttling hole (51) is smaller than the diameter of the water inlet pipe (2).
3. The high water level coffee machine according to claim 2, characterized in that: The diameter of the throttling hole (51) is 1 / 4 to 1 / 2 of the diameter of the water inlet pipe (2).
4. The high water level coffee machine according to claim 2, characterized in that: The throttling component (5) comprises a body, the outer peripheral wall of the body is adapted to the inner wall of the water inlet pipe (2), the body is arranged in the water inlet pipe (2), and the outer peripheral wall of the body is sealed and fitted with the inner wall of the water inlet pipe (2), and a through hole is provided in the body passing through both ends thereof, the through hole is a variable diameter hole, and the variable diameter hole comprises at least a first hole section and a second hole section (52), the hole diameter of the first hole section is smaller than the hole diameter of the second hole section (52) and forms the throttling hole (51).
5. The high water level coffee machine according to any one of claims 1 to 4, characterized in that: The water inlet pipe (2) extends vertically, and its upper end is connected to the water outlet at the bottom of the water tank (1); and / or The water outlet pipe (3) comprises a first pipe section (31) extending in the transverse direction and a second pipe section (32) extending in the vertical direction; the first end of the first pipe section (31) is bent upward and connected to the lower end of the water inlet pipe (2); the second end of the first pipe section (31) is connected to the lower end of the second pipe section (32); the upper end of the second pipe section (32) is bent outward and connected to the water outlet nozzle (4).
6. The high water level coffee machine according to claim 5, characterized in that: The throttling component (5) is arranged close to the upper end of the water inlet pipe (2).
7. The high water level coffee machine according to claim 5, characterized in that: The one-way valve (6) is a float valve, comprising a valve body (61) and a float (62). A water outlet channel connecting the water inlet pipe (2) and the water outlet pipe (3) is provided in the valve body (61). The float (62) is arranged below the water outlet channel and rises and falls under the pushing action of water in the water outlet pipe (3) to block or detach from the water outlet channel, so that the float valve is closed or opened.
8. The high water level coffee machine according to claim 5, characterized in that: The heating component (7) comprises a heating tube, the heating tube is attached to the outside of the first tube section (31) and extends along the first tube section (31); the material of the portion of the first tube section (31) where the heating tube is arranged is a heat-conducting metal.