Pressure regulation control device and coffee brewing system

Abstract

The utility model discloses a pressure regulation control device which comprises a water supply channel, a pressure relief cavity and a valve element, the valve element is pressed at the communication position of the water supply channel and the pressure relief cavity under the influence of the elastic force of a spring, and when the pressure of water flow in the water supply channel is larger than the elastic force of the spring, the water flow can eject the valve element open and flow out of a pressure relief opening. The water pressure in the water supply channel is gradually reduced until the water pressure is smaller than the elastic force of the spring, and the compression amount of the spring can be adjusted through rotation of the motor to meet the requirements of different pressure values. The pressure relief structure is additionally arranged on the water flow pipeline, the valve element is matched with the spring to set the pressure threshold value, when the water pressure in the pipeline is larger than the elastic force of the spring, the valve element is jacked open, part of water flow flows out of the pressure relief opening, the water flow pressure is reduced, and the purpose of controlling the water pressure is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee brewing, in particular to a pressure regulating control device and a coffee brewing system. Background Art

[0002] A coffee machine is a household appliance that can automatically brew coffee. Existing coffee machines usually use two methods to control the water pressure during brewing. One is to adjust the pressure by controlling the flow rate of the water pump. This control method controls the water pressure instability and affects the taste of the brewed coffee. The other is to control the water pressure by manually turning a preset regulating valve. This method requires professional knowledge and skills as well as experience in brewing coffee many times to control the water pressure to the required pressure value. Utility Model Content

[0003] Therefore, in order to solve the above problems, the purpose of the present utility model is to provide a pressure regulating control device, comprising:

[0004] water supply channel;

[0005] A pressure relief chamber, which is communicated with the side end of the water delivery channel and is provided with a pressure relief port;

[0006] A valve core is arranged in the pressure relief chamber and blocks the connection between the water supply channel and the pressure relief chamber;

[0007] The regulating motor has an output end connected to an elastic member, and one end of the elastic member abuts against the valve core;

[0008] The regulating motor is used to control the end of the elastic member away from the valve core to approach / move away from the valve core.

[0009] Preferably, a sealing ring is provided at the connection point between the water supply channel and the pressure relief chamber, and the sealing ring is sleeved on the valve core.

[0010] Preferably, the pressure relief chamber is threadedly connected with an adjusting rod, the adjusting rod abuts against the elastic member, and the output end of the adjusting motor is connected to the elastic member through the adjusting rod.

[0011] Preferably, a waist-shaped groove is provided on a side of the adjusting rod facing away from the elastic member, and a convex shaft is connected to the output end of the adjusting motor and is clamped in the waist-shaped groove.

[0012] Preferably, the elastic member is a spring, and a limiting column is provided on a side of the adjustment rod facing the spring.

[0013] A coffee brewing system, comprising:

[0014] One of the pressure regulating control devices mentioned above;

[0015] A water storage unit, which is connected to the water inlet end of the water delivery channel and the pressure relief port of the pressure relief chamber through a pipeline;

[0016] A heating unit connected to the water outlet of the water supply channel;

[0017] A water outlet device, which is connected to the output end of the heating unit and has a pressure sensor inside;

[0018] A control unit electrically connected to the regulating motor and the pressure sensor;

[0019] The control unit is used to actuate the regulating motor.

[0020] Preferably, a water pump and a flow meter are installed in the connecting pipeline between the water storage unit and the water supply channel.

[0021] Preferably, the water outlet device is a shower head.

[0022] The beneficial effects of the utility model are:

[0023] (1) A pressure relief structure is added to the water flow pipeline, and its pressure threshold is set by the valve core and the spring. When the water pressure in the pipeline is greater than the spring force, the valve core will be pushed open, and part of the water will flow out from the pressure relief port, reducing the water flow pressure and achieving the purpose of pressure control;

[0024] (2) A motor is configured to control the position of one end of the spring, adjust the compression of the spring, change the elastic force applied by the spring to the valve core, and change the set pressure threshold according to demand;

[0025] (3) A pressure sensor is provided in the water outlet device to monitor the water pressure value, and the pressure threshold is adjusted intelligently and in real time according to the water pressure value, so that coffee with good taste can be brewed without manual adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a structural schematic diagram of a pressure regulating control device;

[0028] Figure 2 It is a schematic cross-sectional view of the pressure regulating control device;

[0029] Figure 3 It is a schematic diagram of the explosion structure of the pressure regulating control device;

[0030] Figure 4 is a schematic diagram of the structure of a coffee brewing system;

[0031] Explanation of the accompanying symbols: 1. Pressure regulating control device; 2. Water supply channel; 3. Pressure relief chamber; 31. Pressure relief port; 32. Valve core; 321. Sealing ring; 33. Spring; 34. Adjusting motor; 35. Cam shaft; 4. Adjusting rod; 41. Waist-shaped groove; 5. Water tank; 51. Flow meter; 52. Water pump; 6. Heating unit; 7. Shower head; 71. Pressure sensor; 8. Control unit.

[0032] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0034] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] Embodiment 1:

[0037] Figure 1-Figure 3 A pressure regulating control device provided by the utility model is shown, including a water supply channel 2 and a pressure regulating device, wherein the pressure regulating device is provided with a pressure relief chamber 3, and the pressure relief chamber 3 is connected with a pressure relief port 31, the water supply channel 2 is connected with the pressure relief chamber 3 through the pressure relief channel, the water flow in the water supply channel 2 can flow into the pressure relief chamber 3 and flow out from the pressure relief port 31, a valve core 32 is provided in the pressure relief chamber 3, and a spring 33 is abutted against one end of the valve core 32 away from the water supply channel 2, the spring 33 provides an elastic force to the valve core 32 toward the pressure relief channel, so that the valve core 32 is blocked at the pressure relief channel, the water in the water supply channel 2 needs to overcome the elastic force of the spring 33, and can only enter the pressure relief chamber 3 after the valve core 32 is pushed open, so the elastic force of the spring 33 is the pressure threshold.

[0038] A sealing ring 321 is sleeved on the valve core 32 and is used to block the pressure relief channel.

[0039] The pressure regulating device is provided with an adjusting motor 34 connected with a spring 33, which can control the end of the spring 33 away from the valve core 32 to approach / move away from the valve core 32. Specifically, the output end of the adjusting motor 34 is connected with a waist-shaped convex shaft 35, and an adjusting rod 4 is arranged in the pressure relief chamber 3. The side surface of the adjusting rod 4 has an external thread that cooperates with the internal thread arranged in the pressure relief chamber 3. The end of the adjusting rod 4 facing the adjusting motor 34 is provided with a waist-shaped groove 41, and the convex shaft 35 is clamped in the waist-shaped groove 41. The adjusting motor 34 can control the rotation of the convex shaft 35. When the convex shaft 35 rotates, it drives the adjusting rod 4 to rotate. Due to the threaded matching relationship between the adjusting rod 4 and the pressure relief chamber 3, the adjusting rod 4 will also translate along the rotation axis, approaching / moving away from the valve core 32. The two ends of the spring 33 are respectively abutted on the valve core 32 and the adjusting rod 4. When the adjusting rod 4 moves, the compression amount of the spring 33 changes, thereby adjusting the pressure threshold of the water supply channel 2.

[0040] A limiting column is provided on one side of the adjusting rod 4 facing the spring 33 to prevent the spring 33 from being offset or misplaced.

[0041] The cam 35 is inserted into the waist-shaped groove 41. When the adjusting motor 34 controls the cam 35 to rotate, since the adjusting rod 4 also translates along the rotation axis, when the adjusting rod 4 approaches the valve core 32 and compresses the spring 33, the cam 35 gradually disengages from the waist-shaped groove 41. Therefore, the depth of the waist-shaped groove 41 and the corresponding length of the cam 35 need to be set to be greater than the axial movement stroke of the adjusting rod 4 to prevent the cam 35 from slipping out of the waist-shaped groove 41.

[0042] Working principle:

[0043] The elastic force of the spring 33 presses the valve core 32 against the pressure relief channel. When the water pressure in the water supply channel 2 is greater than the elastic force of the spring 33, the water pushes open the valve core 32, flows into the pressure relief valve and then flows out from the pressure relief port 31. When the water pressure drops to less than the elastic force of the spring 33 after the pressure relief, the spring 33 presses the valve core 32 against the pressure relief channel again. The elastic force of the spring 33 is the pressure threshold. The output end of the adjustment motor 34 is connected to the spring 33, which can move the spring 33 away from one end of the pressure relief channel, thereby changing the compression amount of the spring 33 and the elastic force applied by the spring 33 to the valve core 32, and finally the pressure threshold can be adjusted.

[0044] Embodiment 2:

[0045] Figure 4A coffee brewing system provided by the present embodiment is shown. The present embodiment includes a pressure regulating control device provided by the embodiment 1, and also includes a water storage unit, a heating unit 6 and a water outlet device. The water storage unit is specifically a water tank 5 configured in the coffee machine. The water tank 5 is connected to the water inlet end of the water supply channel 2 through a pipeline. The water outlet end of the water supply channel 2 is connected to the heating unit 6. The output end of the heating unit 6 is connected to the water outlet device. A water pump 52 and a flow meter 51 are installed in the connecting pipeline between the water tank 5 and the water supply channel 2. The water tank 5, the pressure regulating control device, the heating unit 6 and the water outlet device form a water boiling and brewing structure for the coffee machine. The water for brewing is stored in the water tank 5. When the coffee machine is started, the water pump 52 draws water from the water tank 5 and guides it into the pressure regulating control device and then into the heating unit 6 for heating. After heating, the hot water enters the water outlet device and flows out from the water outlet device to mix with the coffee powder to brew to form coffee.

[0046] A control unit 8 is also configured, and a pressure sensor 71 is added to the water outlet device. The control unit 8 is electrically connected to the water pump 52, the regulating motor 34, the heating unit 6 and the pressure sensor 71. The control unit 8 can receive the water pressure value in the water outlet device fed back by the pressure sensor 71, and control the regulating motor 34 according to the pressure value to further adjust the pressure threshold. The numerical relationship between the pressure value in the water outlet device and the pressure threshold can be set according to actual usage, and a set of corresponding algorithms is usually set in conjunction. This part is a mature technology and is not the research and development purpose of the present invention, so it will not be elaborated here.

[0047] The pressure relief port 31 is in communication with the water tank 5 , and the water flowing out of the pressure relief port 31 is recovered into the water tank 5 and can be reused.

[0048] The water outlet device can be selected arbitrarily according to actual conditions. The water outlet device in this embodiment is a shower head 7, which can be used in conjunction with a funnel for holding coffee powder.

[0049] Working principle:

[0050] The pressure regulating control device is applied to the existing coffee machine, and a pressure sensor 71 is added to the water outlet device of the coffee machine to give full play to the function of the control unit 8 in the coffee machine, receive the pressure data fed back by the pressure sensor 71, and adjust the pressure threshold in the pressure regulating control device in real time to ensure that the water pressure is stable and controllable when brewing coffee.

[0051] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A pressure regulating control device, characterized in that: include: Water supply channel (2); A pressure relief chamber (3), which is in communication with a side end of the water supply channel (2) and is provided with a pressure relief port (31); A valve core (32) is arranged in the pressure relief chamber (3) and blocks the connection between the water supply channel (2) and the pressure relief chamber (3); An adjusting motor (34) having an output end connected to an elastic member, one end of the elastic member abutting against the valve core (32); The regulating motor (34) is used to control the end of the elastic member that is away from the valve core (32) to approach or move away from the valve core (32).

2. The pressure regulating control device according to claim 1, characterized in that: A sealing ring (321) is provided at the connection point between the water supply channel (2) and the pressure relief chamber (3), and the sealing ring (321) is sleeved on the valve core (32).

3. The pressure regulating control device according to claim 1, characterized in that: The pressure relief chamber (3) is threadedly connected with an adjusting rod (4), the adjusting rod (4) abuts against the elastic member, and the output end of the adjusting motor (34) is connected to the elastic member through the adjusting rod (4).

4. The pressure regulating control device according to claim 3, characterized in that: A waist-shaped groove (41) is provided on a side of the adjusting rod (4) facing away from the elastic member, and an output end of the adjusting motor (34) is connected to a convex shaft (35) which is clamped in the waist-shaped groove (41).

5. The pressure regulating control device according to claim 3, characterized in that: The elastic member is a spring (33), and a limiting column is provided on a side of the adjusting rod (4) facing the spring (33).

6. A coffee brewing system, characterized in that: include: The pressure regulating control device according to any one of claims 1 to 5; A water storage unit, which is connected to the water inlet end of the water supply channel (2) and the pressure relief port (31) of the pressure relief chamber (3) through a pipeline; A heating unit (6) connected to the water outlet of the water supply channel (2); A water outlet device, which is connected to the output end of the heating unit (6) and has a pressure sensor (71) disposed therein; A control unit (8) electrically connected to the regulating motor (34) and the pressure sensor (71); The control unit (8) is used to control the adjusting motor (34).

7. The coffee brewing system according to claim 6, characterized in that: A water pump (52) and a flow meter (51) are installed in the connecting pipeline between the water storage unit and the water supply channel (2).

8. The coffee brewing system according to claim 6, characterized in that: The water outlet device is a shower head (7).

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