On-board coffee processor

An on-board coffee processor having a boiling cup, a coffee bucket, a distill cup and a lid; the upper end of boiling cup is connected with the lower end of distill cup; the coffee bucket is arranged at the rim of boiling cup; the distill cup is provided with a distill tube; the lower end of the tube leads to the coffee bucket from the bottom of distill cup and the upper end of the tube leads to the upper part of distill cup; the lid is connected to the upper end of distill cup, and the bottom of the said boiling cup is set up with a heating plate and a thermistor is installed at the bottom of the heating plate. The on-board coffee processor has the boiling cup, the coffee bucket and the distill cup arranged from bottom to top; the boiling cup has a heating device.

BACKGROUND OF THE INVENTION

The present invention pertains to an on-board electric heating & containing device, and more particularly, to an on-board coffee processor.

China Patent No. CN201320775935.8 has disclosed an electric heating on-board coffee cup on Aug. 27, 2014, including the cup body. The said cup body is provided with a heating device at the lower end; the heating device is composed of an electric heating element and a temperature adjusting device; the electric heating element is arranged at the bottom end face of cup body; the heating device is provided with a temperature probe; the temperature probe is placed in the cup at one end and connected with the temperature adjusting device at the other end; the heating device is set up with a power base at the lower end which is electrically connected with the mating connector; the said cup body is equipped with an on-board fixing frame in vehicle; the cup body and power base are orderly arranged on the on-board fixing frame. The electric heating on-board coffee cup cannot prepare or brew coffee, it is just container that can heat coffee beverage and keep its temperature.

BRIEF SUMMARY OF THE INVENTION

The present invention is intended to overcome the defects of the prior art and provide a simple-structured on-board coffee processor with reasonable & convenient operation and self-heating device, which can produce high-temperature steam to brew coffee.

The present invention is realized by the following technical scheme:

The on-board coffee processor is characterized in that it consists of a boiling cup, a coffee bucket, a distill cup and a lid; the upper end of boiling cup is connected with the lower end of distill cup; the coffee bucket is arranged at the rim of boiling cup; the distill cup is provided with a distill tube; the lower end of the tube leads to the coffee bucket at the bottom of distill cup and the upper end of the tube leads to the upper part of distill cup; the lid is connected to the upper end of distill cup, and the bottom of the said boiling cup is set up with a heating plate and a thermistor is installed at the bottom of the heating plate.

The present invention can also be solved by using the following technical measures:

As a more specific scheme, the said thermistor is pressed against the bottom of the heating plate by means of a holding block, and a connecting component for fixing the holding block is provided at the bottom of the heating plate.

The said connection component comprises a stud and a nut; the stud is arranged at the bottom of heating plate, and the corresponding stud of holding block is provided with the hole, and the stud is connected with the nut after passing through the hole.

The corresponding thermistor, of the said holding block is arranged with a groove where the thermistor is placed to avoid the movement of thermistor, thereby improving the accuracy of temperature sensing.

The said boiling cup is open at the bottom and the inner side at the lower end of boiling cup is provided with a flange, and the heating plate is pressed against the bottom of flange by the heat-resistant bracket, wherein the primary sealing ring is arranged between the heating plate and the flange; the outer circumference of heat-resistant bracket is connected with the inner side at the lower end of boiling cup by screw-thread fit.

The said boiling cup is set up with a cup seat and a control circuit board at the bottom; the control circuit board is arranged in the cup seat, and the heating plate and the thermistor are electrically connected with the control circuit board.

The said cup seat comprises a top cap, a shell and a bottom cap; the center of top cap is connected with the center of the said heat-resistant bracket by a screw, and the shell is sheathed on the top cap and the outer circumference of bottom cap; the said boiling cup is provided with an upper limit retainer; the bottom cap is installed with a lower limit retainer at the lower end of the corresponding shell; the top cap and the bottom cap are connected by screws, and the shell is crimped between the upper limit retainer and the lower limit retainer.

The wall of the said boiling cup and/or distill cup is a double-layer structure and the inner layer is a vacuum insulation layer. That is to say, the inside of the cup wall is vacuum-treated to form the vacuum insulation layer.

The upper end of the said boiling cup is screwed with the lower end of the distill cup; and the upper end of distill cup is screwed with the lid, wherein the upper ends of boiling cup and the distill cup are provided with external threads; the secondary sealing ring is arranged between the upper end of boiling cup and the lower end of distill cup. When the pressure inside the boiling cup is too high, the secondary sealing ring will lose its sealing effect under high pressure. The pressure inside the boiling cup will be discharged from the connection between the boiling cup and the distill cup to avoid explosion.

The bottom of the said coffee bucket is provided with a steam pipe, which is led to the inside of coffee bucket and boiling cup; the bottom and the top inside the coffee bucket are respectively provided with a lower mesh and an upper mesh. If a better filtering effect is required, the coffee bucket with ground coffee inside can be covered with a layer of filter paper.

The beneficial effects of the invention are as follows:

(1) The on-board coffee processor comprises a boiling cup, a coffee bucket and a distill cup from bottom to top; the boiling cup has a heating device. When preparing the coffee, the boiling cup acts as a steam generator, heating the water inside to form the high temperature and high pressure steam to rush at the ground coffee in the bucket, and then the steam mixed with ground coffee is condensed in the distilling tube of distill cup to form the coffee liquid, which flows into the distill cup from the upper end of distilling tube, thereby realizing the function of making the coffee liquid;

(2) The bottom of heating plate of the boiling cup is provided with a thermistor; the thermistor feeds the real-time temperature signal of heating plate to the control circuit board, and the temperature signal can be converted into a digital signal and displayed by screen;

(3) The control circuit board can control the start and stop of the heating plate according to the temperature signal detected by the thermistor, to prevent the heating without liquid;

(4) The thermistor is pressed against the bottom of heating plate by the holding block to accurately detect the temperature signal of heating plate;

(5) The heating plate is provided with a connecting piece at the bottom, and the holding block is fixed at the bottom of the heating plate through the connecting piece to ensure that the thermistor and the heating plate are connected effectively.

DETAILED DESCRIPTION OF THE INVENTION

Here are the further descriptions of the present invention with figures and examples:

SeeFIG. 1˜FIG. 4, an on-board coffee processor consists of a boiling cup11, a coffee bucket13, a distill cup19and a lid21; the upper end of boiling cup11is connected with the lower end of distill cup19; the coffee bucket13is arranged at the rim of boiling cup11; the distill cup19is provided with a distill tube20; the lower end of the tube20leads to the coffee bucket13from the bottom of distill cup19and the upper end of the tube20leads to the upper part of distill cup19; the lid21is connected to the upper end of distill cup19, and the said boiling cup11is set up with a heating plate at the bottom and a thermistor7is installed at the bottom of the heating plate8.

The said thermistor7is pressed against the bottom of the heating plate8by means of a holding block6, and a connecting component for fixing the holding block6is provided at the bottom of the heating plate8.

SeeFIG. 5andFIG. 6, the said connection component comprises a stud25and a nut28; the stud25is arranged at the bottom of heating plate8, and the corresponding stud25of holding block6is provided with the hole23, and the stud25is connected with the nut28after passing through the hole23.

The corresponding thermistor7of the said holding block6is arranged with a groove24where the thermistor7is placed.

The said boiling cup is open at the bottom and the inner side at the lower end of boiling cup is provided with a flange30; the heating plate8is pressed against the bottom of flange30by the heat-resistant bracket5; wherein the primary sealing ring9is arranged between the heating plate8and the flange30; the outer circumference of heat-resistant bracket5is connected with the inner side at the lower end of boiling cup11by screw-thread fit.

The said boiling cup11is set up with a cup seat and a control circuit board3at the bottom; the control circuit board3is arranged in the cup seat, and the heating plate8and the thermistor7are electrically connected with the control circuit board3.

The said cup seat comprises a top cap4, a shell2and a bottom cap1; the center of top cap4is connected with the center of the said heat-resistant bracket5by a screw27, and the shell2is sheathed on the top cap and the outer circumference of bottom cap1; the said boiling cup11is provided with an upper limit retainer10; the bottom cap1is installed with a lower limit retainer45at the lower end of the corresponding shell2; the top cap and the bottom cap1are connected by screws; and the shell2is crimped between the upper limit retainer10and the lower limit retainer45.

The said heat-resistant bracket5is set up with a central nut26in the center; the top cap4is arranged with a central hole; the screw27passes through the central hole of top cap4from bottom to top and connects to the central nut26of heat-resistant bracket5.

The wall of the said boiling cup11and distill cup19is a double-layer structure and the inner layer is a vacuum insulation layer44. Wherein, the outer wall of the said boiling cup11and distill cup19corresponds to the vacuum insulation layer44/46respectively, which is set up with the first evacuation hole29and the second evacuation hole31. The said first evacuation hole29is arranged on the surface of upper limit retainer10at the lower end of boiling cup11to be covered by the shell2of cup seat; the outer circumference of the said distill cup19is provided with decorative ring17, which covers the said second evacuation hole31. The outer circumference at the lower end of distill cup19is provided a conical stepped surface18, the second evacuating hole31is arranged outside of the conical stepped surface18. The said decorative ring17is a silicon rubber ring which is sheathed over the conical stepped surface18and covers the second evacuation hole31. In view of the need to open the evacuation hole on the outer surface of the cup, after evacuation, the hole will be blocked; however, the hole edge may become rough when blocking the hole, which may affect the appearance, so, the boiling cup11and the distill cup19of the present invention cover the rough edge of evacuation hole on the surface by using the cup seat shell2and the decorative ring17, respectively.

In addition, since the decorative ring17is a silicon rubber ring, when the distill cup19falls to the ground, the silicon rubber ring functions as a cushion and greatly reduces the chance of breaking. Further, since the decorative ring17has a certain taper at the mating portion of the distill cup19, it can prevent the decorative ring17from falling out.

The upper end of the said boiling cup11is screwed with the lower end of the distill cup19; and the upper end of distill cup19is screwed with the lid21, wherein the upper ends of boiling cup11and the distill cup19are provided with external threads; the secondary sealing ring15is arranged between the upper end of boiling cup11and the lower end of distill cup19. The upper ends of both boiling cup11and distill cup19are designed to be the same size. After taking the distill cup19and the coffee bucket13, the lid21can be connected to the upper end of boiling cup11to boil water by the boiling cup11, as showed inFIG. 7.

The outer circumference at the middle portion of the distill cup19is concave to form a grip.

The upper end of the said distill tube20is provided with a cap32and there is a gap left between the distill tube20and the cap32.

The bottom of the said coffee bucket13is provided with a steam pipe12, which is led to the inside of coffee bucket13and boiling cup11; the bottom and the top inside the coffee bucket13are provided with a lower mesh14and an upper mesh16, respectively.

The said lid21comprises the body of lid43, the metal jacket42and the silicone disc41; the metal jacket is arranged outside of the cup lid43, which extends out of the shroud39, and the tertiary sealing ring38is set between the top5of shroud39and the metal jacket42, thereby forming a pressure relief chamber35at the top of cup lid43and the top surface inside the metal jacket42through shroud39. The silicone disc41is placed on the top surface inside the cup lid43. The said silicone disc41is installed with the first relief hole36on the surface, the cup lid43is arranged with the second relief hole37on the top surface, and the metal jacket is provided with the third relief hole34on the top surface; the first relief hole36is offset from the second relief hole37; and the second relief hole37is offset from the third relief hole34. The said silicone disc41is provided with an annular rib40on the top surface, which surrounds outside of the first relief hole36and the second relief hole37.

The working principle of the present invention: as shown inFIG. 5, when in use, the distill cup19and the coffee bucket13are removed, add water C into the boiling cup11, and add ground coffee H into the coffee bucket13. Then, connect the distill cup19and the coffee bucket13to the boiling cup11. When the power source is turned on, the heating plate9is started under the set procedure of the control circuit3, so that the water C in the boiling cup11is boiled and a large amount of water vapor D is generated. Since the boiling cup11is sealed at the junction of the distill cup19, the steam D can flow only through the steam pipe12to the coffee bucket13, and the ground coffee treated with the high-temperature hydrothermal steam D forms the fragrant coffee liquid E, which flows into the distill cup19through the distilling tube.

Since the coffee liquid E stored in distill cup19is high in temperature, so more water vapor F is released, and the water vapor F flows through the first relief hole36and the second relief hole37into the pressure relief chamber35and then discharged out from the third relief hole34. When the water in boiling cup11is dried by heating, the temperature of heating plate8will be 100° C. or more; the thermistor7will feed the temperature signal back to the control circuit board3to stop the heating plate8in time through the control circuit board3.

Additionally, the lid21also has the function of leak-preventing. Since the diameter of the first relief hole36of the silicone disc41is very small, the annular rib40on the top surface of the annular rib41causes a certain deformation gap between the silicone disc41and the cup lid43. When the boiling cup11or the distill cup19to which the lid21is connected is tilted, the liquid in the cup has not yet completely entered the first relief hole36, and under the pressure of the liquid, the silicone disc41deforms to the direction of the inner top surface of cup lid43and covers the second relief hole37, thereby blocking the passage of the lid21from the outside and preventing the water leakage.