Coffee machine capable of controlling water yield through double NTC (negative temperature coefficient)

Abstract

The utility model relates to the technical field of coffee machines, and discloses a double-NTC (negative temperature coefficient) controlled water yield coffee machine which comprises a machine body, a water tank, an electric heating tube and a filter component are arranged on the machine body, a water inlet pipe is communicated between a water outlet of the water tank and a water inlet of the electric heating tube, and a water outlet pipe is communicated with a water outlet of the electric heating tube. A containing cavity used for containing coffee powder is formed in the filtering component, a water outlet of the water outlet pipe is communicated with the containing cavity and discharges water into the containing cavity, the containing cavity is provided with a liquid outlet used for discharging coffee liquid, a first temperature detection element is arranged at the water outlet of the water tank, and a second temperature detection element is arranged at the electric heating pipe. The first temperature detection element is used for detecting the temperature of the water outlet of the water tank. The coffee machine capable of controlling the water yield through the double NTC is simple in structure and low in production cost; the function of controlling the water outlet amount is achieved through the first NTC temperature sensor and the second NTC temperature sensor, the water outlet temperature accuracy is high, the structure is compact, and the size of the whole machine can be conveniently reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to coffee machine technical field, specifically, relate to a coffee machine of double NTC control water yield. BACKGROUND

[0002] The coffee machine on market controls water yield, commonly through water pump and flowmeter to control, the structure of water pump and flowmeter, complex structure, production cost is higher, and precision is excessive, most consumer does not need to be accurate to every milliliter when brewing coffee;Some coffee machines, its water pump and flowmeter need to be set in the machine body, so that the size of the machine shell needs to be set slightly larger, resulting in the overall size of the coffee machine is larger, occupies larger space, is not convenient for use in some narrow space, and the use experience is poor;In addition, since the temperature of the water in the water tank is affected by the environmental temperature, the water temperature is unstable, and it is difficult to reach the preset temperature required by the user. SUMMARY

[0003] To solve at least one aspect of the above problems, the utility model provides a coffee machine of double NTC control water yield, including: machine body, water tank, electric heating pipe and filter part are arranged on the machine body, the water outlet of the water tank and the water inlet of the electric heating pipe are communicated with the water inlet pipe, the water outlet of the electric heating pipe is communicated with the water outlet pipe, the filter part is provided with a containing cavity for containing coffee powder, the water outlet of the water outlet pipe is communicated with the containing cavity and carries out water outlet into the containing cavity, the containing cavity is provided with a liquid outlet for discharging coffee liquid, the water outlet of the water tank is provided with a first temperature detection element, the electric heating pipe is provided with a second temperature detection element, the first temperature detection element is used for detecting the temperature at the water outlet of the water tank, and the second temperature detection element is used for detecting the temperature at the electric heating pipe;The coffee machine of double NTC control water yield of the utility model has the advantages of simple structure, low production cost, the function of controlling water yield is realized through the first NTC temperature sensor and the second NTC temperature sensor, the water outlet temperature is high in accuracy, the structure is compact, and the overall volume is convenient for reducing.

[0004] Optionally, the first temperature detection element is a first NTC temperature sensor, and the second temperature detection element is a second NTC temperature sensor.

[0005] Optionally, the water tank is detachably arranged on the machine body, and a water outlet valve is arranged at the water outlet of the water tank, the water outlet valve is opened when the water tank is connected to the machine body, and the water outlet valve is closed when the water tank is detached from the machine body.

[0006] Optionally, the water outlet valve comprises a valve core, a sealing ring and a first elastic member, the sealing ring is arranged on the upper part of the valve core, the sealing ring is arranged on the inner bottom of the water tank, the valve core is arranged in the lower part of the water tank in the vertical direction, and the first elastic member is arranged between the outer side of the water tank and the valve core.

[0007] Optionally, the body is provided with a mounting shell, a communication cavity is arranged in the mounting shell, the communication cavity is used for communicating the water outlet of the water tank and the water inlet of the water inlet pipe, and the temperature sensing end of the first temperature detection element is arranged in the communication cavity.

[0008] Optionally, a top rod corresponding to the valve core is arranged in the communication cavity in the vertical direction, a second elastic member is arranged between the lower side of the top rod and the mounting shell, and the top rod is used for upwardly opening the valve core when the water tank is connected to the body; the first elastic member and the second elastic member are both compression springs.

[0009] Optionally, the electric heating pipe comprises a pipe and an electric heating body arranged on one side of the pipe, the electric heating body is used for heating water flowing through the pipe, and the pipe is communicated between the water inlet pipe and the water outlet pipe.

[0010] Optionally, the second temperature detection element is arranged on one side of the electric heating pipe, and the electric heating pipe is provided with a fixing frame for fixing the second temperature detection element.

[0011] Optionally, the fixing frame is provided with a fixing plate, the second temperature detection element is fixed between the electric heating pipe and the fixing plate, the fixing frame is provided with a groove for mounting the electric heating pipe, the electric heating pipe is provided with a first positioning groove for positioning the second temperature detection element, and the fixing plate is provided with a second positioning groove for positioning the second temperature detection element.

[0012] Optionally, the body is provided with a control panel and a timer, the timer is used for controlling the electric heating pipe, the electric heating pipe, the first temperature detection element, the second temperature detection element and the timer are electrically connected with the control panel, and the filtering component comprises a coffee powder filtering basket.

[0013] The utility model discloses a coffee machine of double NTC control water output quantity relative to prior art, simple structure, low in production cost, through the first NTC temperature sensor and second NTC temperature sensor realize the function of controlling water output quantity, and water temperature accuracy is high, and the structure is compact, and the whole machine volume is convenient for reducing, and the first temperature detection element is the first NTC temperature sensor, and the second temperature detection element is the second NTC temperature sensor, simple structure, small, low in production cost, and the second temperature detection element is firm, and displacement is not easy to take place, and detection is stable, and the machine is stable. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the perspective view of the utility model coffee machine of double NTC control water output quantity;

[0015] Figure 2 It is the sectional view of the utility model coffee machine of double NTC control water output quantity;

[0016] Figure 3 It is Figure 2 It is the enlarged view of middle A part;

[0017] Figure 4 It is the structure schematic diagram of the electric heating tube part of the utility model coffee machine of double NTC control water output quantity;

[0018] Figure 5 It is the structure schematic diagram of the coffee powder filter basket part of the utility model coffee machine of double NTC control water output quantity;

[0019] Figure 6 It is the structure schematic diagram of the fixed frame part of the utility model coffee machine of double NTC control water output quantity;

[0020] The corresponding component name of each reference numeral in the drawing is: 1 is the machine body, 2 is the water tank, 201 is the first temperature detection element, 2011 is the temperature sensing detection end, 2012 is the sealing ring, 3 is the electric heating tube, 301 is the second temperature detection element, 302 is the first positioning groove, 31 is the pipeline, 32 is the electric heating body, 4 is the coffee powder filter basket, 401 is the containing cavity, 402 is the liquid outlet hole, 5 is the water inlet pipe, 51 is the valve core, 52 is the sealing ring, 53 is the first elastic member, 6 is the mounting shell, 601 is the communication cavity, 602 is the top rod, 603 is the second elastic member, 7 is the fixed frame, 70 is the recess, 71 is the fixed plate, 711 is the second positioning groove, 8 is the control panel, 9 is the water outlet pipe. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiment of the utility model is explained in detail below with the accompanying drawings.

[0022] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "upper", "lower" and the like is based on the orientation or position relationship in normal use of the product.

[0023] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0024] Referring to Figures 1-6 The utility model discloses a coffee machine of double NTC control water yield, include: body 1, be provided with water tank 2, electric heating tube 3 and filter component on body 1, the water outlet of water tank 2 and the water inlet of electric heating tube 3 are communicated with the water inlet pipe 5, the water outlet of electric heating tube 3 is communicated with the water outlet pipe 9, and the water in its inside is boiled to water (water boils and has an outward discharge force), to output water flow, need not use water pump, simple structure, low in production cost, filter component is provided with the containing cavity 401 for containing coffee powder, and the water outlet of water outlet pipe 9 is communicated with containing cavity 401 and carries out water outlet to containing cavity 401, and containing cavity 401 is provided with the liquid outlet 402 for discharging coffee liquid, and the water outlet of water tank 2 is provided with first temperature detection element 201, and electric heating tube 3 is provided with second temperature detection element 301, and first temperature detection element 201 is used for detecting the temperature at the water outlet of water tank 2, and second temperature detection element 301 is used for detecting the temperature at electric heating tube 3, the utility model discloses a coffee machine of double NTC control water yield, simple structure, low in production cost, through first NTC temperature sensor and second NTC temperature sensor realize the function of controlling water yield, and water outlet temperature accuracy is high, and the structure is compact, and it is convenient to reduce the volume of whole machine.

[0025] Referring to Figures 2-4 , first temperature detection element 201 is first NTC temperature sensor, and second temperature detection element 301 is second NTC temperature sensor, simple structure, small, low in production cost, water tank 2 can be detachably arranged on body 1, and it is convenient to add water operation, the water outlet of water tank 2 is provided with water outlet valve, when water tank 2 is connected on body 1, water outlet valve opens, when water tank 2 is detached from body 1, water outlet valve closes, and it is convenient to use, water outlet valve includes valve core 51, sealing ring 52 and first elastic part 53, sealing ring 52 is arranged on the upper portion of valve core 51, sealing ring 52 is arranged in the bottom of water tank 2, valve core 51 is slidably arranged in the lower portion of water tank 2 along the vertical direction, and first elastic part 53 is abutted between the outer side of water tank 2 and valve core 51, when water tank 2 is detached from body 1, first elastic part 53 drives valve core 51 to slide down, so that sealing ring 52 automatically blocks the water outlet of water tank 2, to avoid water leakage.

[0026] Referring to Figures 2-4The body 1 is provided with a mounting shell 6, and the mounting shell 6 is provided with a communication cavity 601, which is used for connecting the water outlet of the water tank 2 and the water inlet of the water inlet pipe 5. The temperature sensing end 2011 of the first temperature detecting element 201 is arranged in the communication cavity 601, and a sealing ring 2012 is arranged between the temperature sensing end 2011 and the mounting shell 6 to avoid water leakage. A top rod 602 corresponding to the valve core 51 is arranged in the communication cavity 601 and is arranged to slide in the vertical direction. The lower side of the top rod 602 abuts against the second elastic element 603 between the mounting shell 6. When the water tank 2 is connected to the body 1, the top rod 602 is used to upwardly push open the valve core 51 to open the water outlet of the water tank. The first elastic element 53 and the second elastic element 603 are both compression springs, and the structure is simple and the production cost is low.

[0027] Referring to Figures 1-4The electric heating tube 3 comprises a pipeline 31 and an electric heating body 32 arranged on one side of the pipeline 31, the electric heating body 32 is used for heating water flowing through the pipeline 31, the pipeline 31 is communicated between the water inlet pipe 5 and the water outlet pipe 9, and the pipeline 31 and the electric heating body 32 are both in a U shape and compact in structure; the second temperature detecting element 301 is arranged on one side of the electric heating tube 3, and a fixing frame 7 for fixing the second temperature detecting element 301 is arranged on the electric heating tube 3; a fixing plate 71 is arranged on the fixing frame 7, the second temperature detecting element 301 is fixed between the electric heating tube 3 and the fixing plate 71, a groove 70 for mounting the electric heating tube 3 is arranged on the fixing frame 7, a first positioning groove 302 for positioning the second temperature detecting element 301 is arranged on the electric heating tube 3, and a second positioning groove 711 for positioning the second temperature detecting element 301 is arranged on the fixing plate 71; the second temperature detecting element 301 is stable in installation and displacement, stable in detection, and stable in machine operation; the machine body 1 is provided with a control panel 8 and a timer, the timer is used for controlling the electric heating tube 3, the electric heating tube 3, the first temperature detecting element 201, the second temperature detecting element 301 and the timer are electrically connected with the control panel 8, and the filtering component comprises the coffee powder filter basket 4; the control principle of the coffee machine is as follows: when a consumer adds drinking water into the water tank 2, the first NTC temperature sensor detects the specific temperature of the water, and according to the corresponding relationship among the electric heating tube power, the water temperature and the water boiling time of the machine, the time required for boiling a cup of coffee is set (by the timer); when the consumer starts the machine, the second NTC temperature sensor detects the temperature of the heating tube, judges whether the machine is in a cold state or a hot state, if the heating tube does not reach the preset temperature value of the hot state, the timer does not start timing, until the temperature of the electric heating tube reaches the set value, it is judged that the machine starts to work stably at this time, so that the water outlet temperature is stable, the timer on the control panel starts timing, and the equipment starts to discharge water, until the working time reaches the set value of the timer, the whole water boiling stage is finished, and the machine enters the heat preservation stage; the principle of controlling the water outlet amount is that according to the temperature at the water outlet of the water tank and the electric heating tube, the corresponding working time of the electric heating tube is calculated and adjusted according to the program algorithm (experimental data of the relationship between the timer timing and the water outlet amount), so as to control the water outlet amount; the water outlet amount refers to the water outlet amount flowing through the electric heating tube in the water boiling stage.

[0028] The coffee machine with the double NTC controlled water outlet amount is simple in structure and low in production cost; the first NTC temperature sensor and the second NTC temperature sensor are used to realize the function of controlling the water outlet amount, the water outlet temperature is high in accuracy, the structure is compact, and the whole machine volume is small; the first temperature detecting element is the first NTC temperature sensor, the second temperature detecting element is the second NTC temperature sensor, the structure is simple, the volume is small, and the production cost is low; the second temperature detecting element is stable in installation and displacement, stable in detection, and stable in machine operation.

[0029] The above merely is the preferred implementation manner of the present application, and it should be noted that, for the ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A coffee machine with double NTC control of the water output, characterized in that, The utility model provides a coffee machine, including: The body (1) is provided with water tank (2), electric heating tube (3) and filter component on, the water outlet of water tank (2) and the water inlet of electric heating tube (3) are communicated with the water inlet pipe (5), the water outlet of electric heating tube (3) is communicated with the water outlet pipe (9), the filter component is provided with the containing cavity (401) for containing coffee powder, the water outlet of water outlet pipe (9) is communicated with containing cavity (401) and carries out water outlet to containing cavity (401) inside, containing cavity (401) is provided with the liquid outlet (402) for discharging coffee liquid, the water outlet of water tank (2) is provided with first temperature detection element (201), electric heating tube (3) is provided with second temperature detection element (301), first temperature detection element (201) is used for detecting the temperature at the water outlet of water tank (2), second temperature detection element (301) is used for detecting the temperature at electric heating tube (3).

2. The coffee machine with dual NTC control of water output according to claim 1, characterized in that, The first temperature detection element (201) is a first NTC temperature sensor, and the second temperature detection element (301) is a second NTC temperature sensor.

3. The coffee machine with dual NTC control of water output according to claim 1, characterized in that, The water tank (2) is detachably arranged on the body (1), and the water outlet of the water tank (2) is provided with a water outlet valve. When the water tank (2) is connected to the body (1), the water outlet valve is opened. When the water tank (2) is detached from the body (1), the water outlet valve is closed.

4. The coffee machine with dual NTC control of water output according to claim 3, characterized in that, The water outlet valve comprises a valve core (51), a sealing ring (52) and a first elastic member (53). The sealing ring (52) is arranged on the upper part of the valve core (51), the sealing ring (52) is arranged on the inner bottom of the water tank (2), the valve core (51) is slidably arranged on the lower part of the water tank (2) in the vertical direction, and the first elastic member (53) is arranged between the outer side of the water tank (2) and the valve core (51).

5. The coffee machine with dual NTC control of water output according to claim 4, characterized in that, The body (1) is provided with a mounting shell (6), and the mounting shell (6) is provided with a communication cavity (601). The communication cavity (601) is used for communicating the water outlet of the water tank (2) with the water inlet of the water inlet pipe (5), and the temperature sensing end (2011) of the first temperature detection element (201) is arranged in the communication cavity (601).

6. The coffee machine with dual NTC control of water output according to claim 5, characterized in that, A top rod (602) corresponding to the valve core (51) is slidably arranged in the communication cavity (601) in the vertical direction. The second elastic member (603) is arranged between the lower side of the top rod (602) and the mounting shell (6). When the water tank (2) is connected to the body (1), the top rod (602) is used for upwardly opening the valve core (51). The first elastic member (53) and the second elastic member (603) are both compression springs.

7. The coffee maker with dual NTC control of water output according to claim 6, characterized in that, The electric heating tube (3) comprises a pipeline (31) and an electric heating body (32) arranged on one side of the pipeline (31). The electric heating body (32) is used for heating the water flowing through the pipeline (31). The pipeline (31) is communicated between the water inlet pipe (5) and the water outlet pipe (9).

8. The coffee maker with dual NTC control of water output according to claim 1, characterized in that, The second temperature detecting element (301) is arranged on one side of the electric heating tube (3), and a fixing frame (7) for fixing the second temperature detecting element (301) is arranged on the electric heating tube (3).

9. The coffee maker with dual NTC control of water output according to claim 8, characterized in that, A fixing plate (71) is arranged on the fixing frame (7), the second temperature detecting element (301) is fixed between the electric heating tube (3) and the fixing plate (71), a groove (70) for mounting the electric heating tube (3) is arranged on the fixing frame (7), a first positioning groove (302) for positioning the second temperature detecting element (301) is arranged on the electric heating tube (3), and a second positioning groove (711) for positioning the second temperature detecting element (301) is arranged on the fixing plate (71).

10. Coffee machine with double NTC control of the water quantity according to any of the claims 1-9, characterized in that, A control panel (8) and a timer are arranged on the machine body (1), the timer is used for controlling the electric heating tube (3), the electric heating tube (3), the first temperature detecting element (201), the second temperature detecting element (301) and the timer are electrically connected with the control panel (8), and the filtering component comprises a coffee powder filtering basket (4).

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