A hot beverage maker is provided that has a water tank, a boiler, a dispensing device, a water outlet pipe and a control device. The control device of the hot beverage maker has a mechanical configuration that includes a rotatable cam provided inside the case of the hot beverage maker. The cam has b
A hot beverage maker is provided that has a water tank, a boiler, a dispensing device, a water outlet pipe and a control device. The control device of the hot beverage maker has a mechanical configuration that includes a rotatable cam provided inside the case of the hot beverage maker. The cam has bumps arranged in, for example, three circles about a periphery of the cam. Spring leaves are arranged to interact with the cam bumps. The spring leaves are electrically connected to control aspects of the hot beverage maker while the rotational position of the cam also controls other aspects of the hot beverage maker.
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1. A hot beverage making device, comprising: a water tank configured to hold a liquid, the water tank having an air port at a top of the water tank that opens to the atmosphere, the water tank comprises a water outlet port;a boiler tank configured for holding and heating the liquid to a temperature,
1. A hot beverage making device, comprising: a water tank configured to hold a liquid, the water tank having an air port at a top of the water tank that opens to the atmosphere, the water tank comprises a water outlet port;a boiler tank configured for holding and heating the liquid to a temperature, the boiler tank being positioned such that a highest liquid level of the boiler tank is lower than a highest liquid level of the water tank; the boiler tank comprises a water inlet port;a water inlet pipe connected between the water outlet port of the water tank and the water inlet port of the boiler, the water inlet pipe comprising a first valve configured to control a flow of liquid from the water tank to the boiler tank;a liquid dispensing device, comprising: a first opening that opens to the atmosphere;a second opening disposed at a first predetermined level inside the boiler tank;a connecting pipeline connected between the first opening and the second opening; anda second valve provided in the connecting pipeline configured to selectively open and close the connecting pipeline;a water outlet pipe in communication with an inner cavity of the boiler tank; anda control device connected to the first valve and the second valve, the control device configured to open and close the first valve and the second valve; the control device comprises a mechanical configuration, the mechanical configuration comprises: a cam rotatably positioned inside the control device, the cam comprises bumps arranged on the peripheral surface of the cam, the cam having a first and a second end;spring leaf switches positioned to be moved to open and closed by corresponding bumps arranged on the peripheral surface of the cam, each spring leaf switch is electrically connected to a control circuit of the control device;a control plate disposed at the first end of the cam, the control plate comprising an actuator surface configured to mechanically open and close the first, second and a third valve based on the rotational position of the cam and control plate, the third valve being an exhaust valve; anda motor disposed proximate to the second end of the cam, the motor configured to drive the cam to rotate to predetermined rotational positions; and wherein the control circuit is electrically connected to the motor. 2. The hot beverage making device of claim 1, wherein the connecting pipeline comprises at least one dispensing pipeline extending upright inside the boiler tank such that an opening at the lower end of the at least one dispensing pipeline is the second opening and an opening at the upper end of the at least one dispensing pipeline is the first opening, the first opening being proximate to the second valve. 3. The hot beverage making device of claim 1, wherein the connecting pipeline comprises a plurality of dispensing pipes each extending upright inside the boiler and each having a second opening at their lower end, wherein the lower end of each dispensing pipe is disposed at a different level inside the inner cavity of the boiler tank, and wherein the upper end of one of the dispensing pipes is connected to the second valve. 4. The hot beverage making device of claim 1, wherein the connecting pipeline further comprises a ventilation pipe extending from the second valve to the first opening. 5. The hot beverage making device of claim 1, further comprising: an exhaust pipe that is in communication with the inner cavity of the boiler; andthe third valve configured to open and close the exhaust pipe to the atmosphere, the control device further connected to the third valve and configured to open and close the third valve. 6. The hot beverage making device of claim 5, wherein each of the first, second and third valves comprise a valve body, a valve spool and a spring such that each of the first, second and third valves are opened and closed based on the actions of their respective spring and the actuator surface. 7. The hot beverage making device of claim 1, further comprising an air pump configured to provide air pressure to the inner cavity of the boiler tank when turned on by the control device and when the first, second and third valves are closed. 8. The hot beverage making device of claim 1, further comprising a fourth valve on the water outlet pipe, the fourth valve being connected to the control device such that the fourth valve opens when the liquid inside the boiler tank reaches a predetermined temperature and the first, second and third are closed. 9. The hot beverage making device of claim 1, further comprising a temperature sensor disposed inside the boiler tank, the temperature sensor being electrically connected to the control circuit to provide a temperature indication, the control circuit is configured to rotate the cam, via the motor, to a predetermined position to open the third valve while liquid in the boiler tank is being heated. 10. The hot beverage making device of claim 1, wherein an opening at one end of the water outlet pipe is disposed proximate to the bottom of the inner cavity of the boiler and another end of the water outlet pipe is located outside of the inner cavity of boiler tank and above the highest liquid level of the boiler tank.
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이 특허에 인용된 특허 (6)
Watanabe Sharky (31 Deer Creek Irvine CA 92714), Automatic coffee brewing apparatus.
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