Liquid supply device and beverage machine system

Abstract

The utility model discloses a liquid supply device and a beverage machine system, and the liquid supply device comprises a liquid storage container which is provided with a liquid inlet and a liquid outlet; the liquid inlet seat is connected to the liquid inlet, the liquid inlet seat is provided with a liquid inlet cavity and a sealing cavity which are independent from each other, and pressure is transmitted between the liquid inlet cavity and the sealing cavity; the liquid inlet pipeline is communicated with the liquid inlet through the liquid inlet cavity; and the pressure sensor is connected to the liquid inlet seat, the pressure sensor detects the pressure in the sealing cavity and generates a pressure signal, and the pressure signal is used for forming liquid level information of the liquid storage container. By arranging the pressure sensor at the liquid inlet, the space of the liquid supply device can be saved, interference on liquid level detection caused by liquid fluctuation during liquid output is avoided, the liquid level detection accuracy is improved, the reliability of real-time liquid level monitoring is ensured, and the liquid supply device is free of sanitary dead corners and convenient to clean.

Description

Technical Field

[0001] The utility model relates to the technical field of beverage preparation, in particular to a liquid supply device and a beverage machine system. Background Art

[0002] The liquid level detection of the traditional liquid supply device adopts the method of embedding a transparent part on the container wall of the liquid storage container or setting a height indicator inside the liquid storage container, and judging the height of the liquid level by human visual recognition.

[0003] However, during the filling and draining process, liquid storage containers require real-time monitoring of the liquid level inside the container to control the amount of liquid flowing in and out. Most related monitoring methods utilize float sensors, TDS sensors, and infrared sensors. These methods can only roughly monitor whether the liquid level is high or low and whether there is liquid in the container. They can only provide limited fixed-level detection and cannot specifically measure the actual amount of liquid remaining in the container.

[0004] The monitoring method in the above-mentioned related art is complex in structure and has blind spots in cleaning. In addition, when the liquid storage container is insufficient, it cannot be monitored in time, resulting in liquid shortage, thereby affecting the user experience. Utility Model Content

[0005] The purpose of the utility model is to provide a liquid supply device which has a simple structure and can detect the liquid level in real time.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model provides a liquid supply device, comprising:

[0007] A liquid storage container, wherein the liquid storage container is provided with a liquid inlet and a liquid outlet;

[0008] A liquid inlet seat is connected to the liquid inlet, and is provided with a liquid inlet cavity and a sealing cavity which are independent of each other, and pressure is transmitted between the liquid inlet cavity and the sealing cavity;

[0009] a liquid inlet pipeline, connected to the liquid inlet through the liquid inlet cavity;

[0010] A pressure sensor is connected to the liquid inlet seat, and the pressure sensor detects the pressure in the sealed cavity and generates a pressure signal, and the pressure signal is used to form liquid level information of the liquid storage container.

[0011] Compared with the existing technology, the beneficial effect of the present invention is that by setting the pressure sensor at the liquid inlet, the space of the liquid supply device can be saved, and the interference of liquid fluctuations during liquid output on liquid level detection is avoided, the accuracy of liquid level detection is improved, and the reliability of real-time monitoring of the liquid level is ensured. Moreover, the liquid supply device has no sanitary dead corners and is easy to clean.

[0012] As a further improvement of an embodiment of the present invention, the liquid inlet and the liquid outlet are both arranged at the bottom of the liquid storage container, or the liquid inlet and the liquid outlet are both arranged at the side of the liquid storage container.

[0013] As a further improvement of an embodiment of the present invention, the liquid inlet seat includes a main body and a cover member connected to the main body, and the liquid inlet seat further includes a first diaphragm provided between the liquid inlet cavity and the sealing cavity;

[0014] The liquid inlet cavity is defined by the main body and the first diaphragm, the sealing cavity is defined by the cover member and the first diaphragm, and pressure is transmitted between the liquid inlet cavity and the sealing cavity through the first diaphragm;

[0015] The main body is provided with an inlet channel communicating with the liquid inlet cavity, and the inlet channel is communicated with the liquid inlet pipeline.

[0016] As a further improvement of an embodiment of the present invention, the pressure sensor is connected to the cover component, the sealed cavity is constructed as a conical cavity, and the pressure sensor includes a pressure detection part, which passes through the cover component and extends into the sealed cavity.

[0017] As a further improvement of one embodiment of the present invention, the liquid storage container is detachably connected to the liquid inlet seat, a liquid inlet check valve is provided at the liquid inlet, and a trigger portion protruding toward the liquid storage container is provided on the liquid inlet seat, and the trigger portion abuts against the liquid inlet check valve to open the liquid inlet;

[0018] A water hole is provided on the liquid inlet seat, and the liquid inlet cavity is connected with the liquid inlet port through the water hole. A blocking portion is provided on the side of the water hole facing the liquid inlet cavity. An inlet channel connecting the liquid inlet cavity and the liquid inlet pipeline is provided on the liquid inlet seat, and the blocking portion is arranged in the entry direction of the inlet channel.

[0019] As a further improvement of one embodiment of the present invention, a retaining rib is provided in the water hole, and the retaining rib extends to both sides of the water hole respectively, and the portion of the retaining rib extending into the liquid inlet cavity is configured as the blocking portion, and the other portion of the retaining rib is configured as the triggering portion;

[0020] The edge of the water hole extends out of a connecting rib that extends into the liquid inlet cavity, and the edge of the connecting rib is engaged with the blocking portion.

[0021] As a further improvement of one embodiment of the present invention, a buffer seat is provided on the liquid inlet pipeline, and the buffer seat has an inflow channel, an outflow channel and a buffer cavity. The buffer cavity is connected and arranged between the inflow channel and the outflow channel, and part of the cavity wall of the buffer cavity is constructed as a second diaphragm.

[0022] The buffer seat can prevent splashing when the liquid is added to the liquid storage container, ensuring accurate measurement of the pressure sensor on the liquid inlet seat.

[0023] As a further improvement of an embodiment of the present invention, the inflow channel forms a flow-limiting hole at one end facing the buffer cavity, and the cross-sectional area of ​​the inflow channel at the flow-limiting hole is the smallest;

[0024] The cross-sectional area of ​​the flow-limiting hole and the minimum cross-sectional area of ​​the outflow channel satisfy at least one of the following characteristics:

[0025] The minimum cross-sectional area of ​​the outflow channel is larger than the cross-sectional area of ​​the flow limiting hole;

[0026] The minimum cross-sectional area of ​​the outflow channel is 2 to 5 times the cross-sectional area of ​​the flow restriction hole;

[0027] The diameter of the flow limiting hole is between 1.1 mm and 1.5 mm.

[0028] As a further improvement of an embodiment of the present invention, a liquid blocking portion is provided in the buffer cavity, the liquid blocking portion is provided in the inflow direction of the inflow channel, and an extension direction of the liquid blocking portion intersects with the outflow direction of the outflow channel.

[0029] As a further improvement of one embodiment of the present invention, the buffer seat includes a base and a pressure cover connected to the base, the second diaphragm is arranged between the base and the pressure cover, the second diaphragm and the base jointly define the buffer cavity, the horizontal position of the outflow channel is higher than the horizontal position of the inflow channel, and the buffer cavity is recessed in an area close to the inflow channel, and the side of the recess is constructed as the liquid blocking portion.

[0030] The present invention also provides a beverage machine system, including a beverage brewing device, the beverage machine system includes the liquid supply device as described in any of the above embodiments, and the upstream of the liquid inlet pipeline is connected to a water supply source or the beverage brewing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a cross-sectional view of a liquid supply device according to one embodiment of the present invention.

[0032] Figure 2 yes Figure 1 An enlarged schematic diagram of the dotted frame portion of the liquid supply device.

[0033] Figure 3 It is a cross-sectional view showing the water inlet of the liquid supply device according to another embodiment of the present invention.

[0034] Figure 4 yes Figure 3 The liquid supply device in FIG. 1 shows a cross-sectional view of the water outlet.

[0035] Figure 5 yes Figure 1 A three-dimensional exploded schematic diagram of the liquid inlet seat of the liquid supply device.

[0036] Figure 6 yes Figure 5 Schematic diagram of the main body of the middle liquid inlet seat.

[0037] Figure 7 yes Figure 1 A cross-sectional view of the buffer seat of the liquid supply device in FIG.

[0038] Repeat use of reference characters in the present specification and drawings is intended to represent same or analogous features or elements of the present application. DETAILED DESCRIPTION

[0039] The present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0040] It should be understood that the terms used herein, such as "upper," "above," "lower," and "below," etc., indicating spatial relative positions, are used for ease of explanation to describe the relationship of one element or feature relative to another element or feature as shown in the accompanying drawings. Spatially relative terms may be intended to encompass different orientations of the device in use or operation other than the orientation shown in the drawings.

[0041] As used herein, the terms "first," "second," and "third" are used interchangeably to distinguish one component from another, and these terms are not intended to indicate the location or importance of each component. The terms "upstream" and "downstream" refer to relative directions relative to the flow of fluid in a fluid pathway. For example, "upstream" refers to the direction from which the fluid is flowing, while "downstream" refers to the direction to which the fluid is flowing.

[0042] The liquid supply device 100 in the specific embodiment of the present invention, referring to Figures 1 to 2As shown, the liquid supply device 100 includes a liquid storage container 20, a liquid inlet seat 30, and a liquid inlet pipeline 40. The liquid storage container 20 is used to store the liquid to be supplied. The liquid storage container 20 has a liquid inlet 21 and a liquid outlet 22. Liquid can be added to the liquid storage container 20 through the liquid inlet 21 and supplied to the outside through the liquid outlet 22. The liquid inlet seat 30 is connected to the liquid inlet 21, and the liquid inlet pipeline 40 is connected to the liquid inlet seat 30. The liquid inlet pipeline 40 transports the liquid into the liquid storage container 20 through the liquid inlet seat 30.

[0043] The liquid to be supplied may be water, coffee liquid or tea liquid.

[0044] The liquid inlet seat 30 is provided with a mutually independent liquid inlet cavity 301 and a sealed cavity 302, and pressure is transmitted between the liquid inlet cavity 301 and the sealed cavity 302. The liquid inlet pipeline 40 is connected to the liquid inlet port 21 through the liquid inlet cavity 301. In this way, the liquid inlet cavity 301 is in fluid communication with the interior of the liquid storage container 20 through the liquid inlet port 21, and the pressure within the liquid inlet cavity 301 can be transmitted to the sealed cavity 302.

[0045] The liquid supply device 100 also includes a pressure sensor 35 connected to the liquid inlet seat 30. The pressure sensor 35 detects the pressure within the sealed chamber 302 and generates a pressure signal. The pressure signal is used to generate liquid level information of the liquid storage container 20. Pressure transmission is possible between the liquid inlet chamber 301 and the sealed chamber 302. The liquid pressure within the liquid storage container 20 can act on the sealed chamber 302 through the liquid inlet chamber 301. The pressure sensor 35 detects the pressure within the sealed chamber 302 and converts the pressure into a pressure signal. The pressure signal is converted to generate liquid level information of the liquid storage container 20, thereby enabling real-time monitoring of the liquid level in the liquid storage container 20 and displaying the liquid level of the liquid storage container 20 in real time on an external display screen. Furthermore, the pressure sensor 35 is positioned at the liquid inlet 21, which avoids interference with liquid level detection caused by liquid fluctuations during liquid delivery, improves the accuracy of liquid level detection, and ensures the reliability of real-time liquid level monitoring.

[0046] In some embodiments, the liquid outlet 22 is disposed at the bottom of the liquid storage container 20 or at a side position near the bottom, and the liquid can be discharged by gravity. Specifically, the liquid outlet 22 and the liquid inlet 21 can be disposed on the same side of the liquid storage container 20, the liquid outlet 22 and the liquid inlet 21 can both be disposed at the bottom of the liquid storage container 20, or the liquid outlet 22 and the liquid inlet 21 can both be disposed at the side of the liquid storage container 20.

[0047] The liquid inlet 21 and the liquid outlet 22 can be located together at the bottom of the liquid storage container 20 to facilitate piping connections. Furthermore, when the liquid storage container 20 is detachably connected to the liquid inlet base 30, installation and removal of the liquid storage container 20 can be facilitated, allowing for manual removal of the liquid storage container 20 to add liquid. The liquid inlet 21 and the liquid outlet 22 can also be located together at the side of the liquid storage container 20 to facilitate horizontal connection and disconnection of the liquid storage container 20 from the liquid inlet base 30.

[0048] In some embodiments, see Figure 1 The liquid inlet 21 and the liquid outlet 22 are both arranged at the bottom of the liquid storage container 20, and the liquid inlet seat 30 can also be arranged at the bottom of the liquid storage container 20. The liquid in the liquid storage container 20 enters the liquid inlet cavity 301 through the liquid inlet 21 under the action of gravity. The liquid pressure in the liquid storage container 20 is transmitted to the sealed cavity 302 of the liquid inlet seat 30 through the liquid inlet 21 and the liquid inlet cavity 301. The pressure transmission is more reliable, and the connection between the liquid storage container 20 and the liquid inlet seat 30 is simpler and more convenient.

[0049] Reference Figure 3 and Figure 4 In some embodiments, the liquid inlet 21a and the liquid outlet 22a are both arranged on the side of the liquid storage container 20a. Preferably, the liquid inlet 21a and the liquid outlet 22a are both arranged on the side of the liquid storage container 20a and adjacent to the bottom of the liquid storage container 20a. The liquid inlet seat 30 can also be arranged on the side of the liquid storage container 20a. The liquid storage container 20a and the liquid inlet cavity 301 form a communicating vessel through the liquid inlet 21a. The liquid in the liquid storage container 20a can also enter the liquid inlet cavity 301 through the liquid inlet 21a under the action of gravity. The pressure in the liquid storage container 20a can also be transmitted to the sealed cavity 302 through the liquid inlet 21a and the liquid inlet cavity 301, so as to realize the liquid level detection of the liquid storage container 20a through the pressure sensor 35. The liquid inlet 21a is arranged on the side of the liquid storage container 20a, which can make the configuration and application scenarios of the liquid storage container 20a more flexible. For example, the liquid inlet 21a is arranged on the side of the liquid storage container 20a, which is suitable for the horizontal extraction application scenario of the liquid storage container 20a.

[0050] Reference Figure 4The liquid supply device 100 further includes a liquid outlet seat connected to the liquid outlet 22a. A liquid outlet check valve 38 is disposed at the liquid outlet 22a. The liquid outlet seat is provided with a protrusion 318 that protrudes toward the liquid storage container 20a. The protrusion 318 abuts against the liquid outlet check valve 38 to open the liquid outlet 22a. When the liquid storage container 20a is connected to the liquid outlet seat, the liquid outlet check valve 38 opens the liquid outlet 22a under the pressure of the protrusion 318, allowing liquid to flow from the liquid storage container 20a. When the liquid storage container 20a is separated from the liquid outlet seat, the liquid outlet check valve 38 automatically returns to a state that closes the liquid outlet 22a. The liquid outlet check valve 38 includes a sealing plug 381 and an elastic member 382. The elastic member 382 is disposed between the boss 318 and the liquid storage container 20a. The boss 318 abuts the sealing plug 381, forcing the sealing plug 381 to move inward from the liquid storage container 20a, overcoming the elastic force of the elastic member 382, ​​thereby opening the liquid outlet 22a. When the liquid storage container 20a is separated from the liquid outlet seat, the sealing plug 381 returns to its original position under the elastic force of the elastic member 382, ​​sealing the liquid outlet 22a. This prevents the liquid in the liquid storage container 20a from flowing out of the liquid outlet 22a, allowing the liquid storage container 20a to be easily removed from the liquid outlet seat for manual refilling.

[0051] The above-mentioned liquid discharge check valve 38 is also applicable Figure 1 The embodiment in which the liquid outlet 22 is located at the bottom of the liquid storage container 20. Figure 2 and Figure 5 The liquid inlet seat 30 includes a main body 31 and a cover member 32 connected to the main body 31. A liquid inlet cavity 301 is provided in the main body 31, and a sealing cavity 302 is provided in the cover member 32. The liquid inlet seat 30 also includes a first diaphragm 36 disposed between the liquid inlet cavity 301 and the sealing cavity 302. The liquid inlet cavity 301 is defined by the main body 31 and the first diaphragm 36, and the sealing cavity 302 is defined by the cover member 32 and the first diaphragm 36. Pressure is transmitted between the liquid inlet cavity 301 and the sealing cavity 302 through the first diaphragm 36. The main body 31 is provided with an inlet channel 303 connected to the liquid inlet cavity 301. The inlet channel 303 is connected to the liquid inlet pipeline 40. The first diaphragm 36 can separate the liquid inlet cavity 301 and the sealing cavity 302. The liquid inlet cavity 301 and the sealing cavity 302 are independent of each other. The sealing cavity 302 can be a sealed air cavity. The first diaphragm 36 transmits the pressure of the liquid in the liquid inlet chamber 301 to the air in the sealed chamber 302 on the other side. The air then transmits the pressure to the pressure sensor 35. The first diaphragm 36 isolates the liquid from the water and air, making the sealed chamber 302 on the other side completely sealed and independent. This isolates the pressure sensor 35 from the liquid, thereby extending the service life of the pressure sensor 35. This eliminates the need for expensive waterproof pressure sensors, reducing costs, and facilitating cleaning of the liquid inlet seat 30. The first diaphragm 36 is constructed as a silicon diaphragm, which reliably isolates the air and water and provides a good seal.

[0052] like Figure 2 As shown, the liquid inlet chamber 301 has a first end close to the liquid inlet 21, and the liquid inlet chamber 301 has a second end close to the first diaphragm 36. The first end and the second end are arranged opposite to each other, and the first end is arranged in the entry direction of the inlet channel 303, while the second end is not arranged in the entry direction of the inlet channel 303. In this way, when the liquid enters the liquid inlet chamber 301 through the inlet channel 303, the liquid flow will not directly hit the first diaphragm 36, which can prevent the impact force of the liquid flow from affecting the detection result of the pressure sensor 35 when the liquid enters.

[0053] The inlet direction can be understood as the flow direction of the liquid in the inlet channel 303. Figure 2 The direction of the arrow.

[0054] The pressure sensor 35 is connected to the cover member 32, wherein the sealed cavity 302 is configured as a cone-shaped cavity. The pressure sensor 35 includes a pressure detection portion 351, which extends through the cover member 32 into the sealed cavity 302. Specifically, Figure 2 As shown, the sealing cavity 302 is constructed as an inverted cone-shaped cavity. The inverted cone-shaped sealing cavity 302 can make the connection between the cover part 32 and the main body 31 more reliable, facilitate the connection between the pressure sensor 35 and the cover part 32, and the overall cost of the liquid inlet seat 30 is low.

[0055] In some embodiments, the liquid storage container 20 is detachably connected to the liquid inlet seat 30, a liquid inlet check valve 37 is provided at the liquid inlet 21, and a trigger portion 312 protruding toward the liquid storage container 20 is provided on the liquid inlet seat 30, and the trigger portion 312 abuts against the liquid inlet check valve 37 to open the liquid inlet 21; a water hole 314 is provided on the liquid inlet seat 30, and the liquid inlet cavity 301 is connected to the liquid inlet 21 through the water hole 314, and a blocking portion 313 is provided on the side of the water hole 314 facing the liquid inlet cavity 301, and the blocking portion 313 is provided on the entry direction of the inlet channel 303.

[0056] like Figure 2 As shown, the inlet channel 303 on the liquid inlet seat 30 enters in the direction toward the blocking portion 313. The inlet channel 303 on the liquid inlet seat 30 enters in the direction toward the blocking portion 313, and the blocking portion 313 can block the liquid flow in the inlet channel 303 to prevent the liquid flow from directly hitting the first diaphragm 36 and affecting the detection of the pressure sensor 35.

[0057] When the liquid storage container 20 is connected to the liquid inlet seat 30, the liquid inlet check valve 37 opens the liquid inlet 21 under the pressure of the trigger portion 312, allowing liquid to be replenished from the liquid inlet pipeline 40 to the liquid storage container 20. When the liquid storage container 20 is separated from the liquid inlet seat 30, the liquid inlet check valve 37 can automatically return to a state of sealing the liquid inlet 21. The liquid inlet check valve 37 includes a movable post 371 and an elastic return member 372. The elastic return member 372 is disposed between the movable post 371 and the liquid storage container 20. The trigger portion 312 abuts against the movable post 371, causing the movable post 371 to move upward, overcoming the elastic force of the elastic return member 372, thereby opening the liquid inlet 21. When the liquid storage container 20 is separated from the liquid inlet seat 30, the movable column 371 is reset under the elastic force of the elastic reset member 372 to close the liquid inlet 21. The liquid in the liquid storage container 20 cannot flow out from the liquid inlet 21. The liquid storage container 20 can be easily removed from the liquid inlet seat 30, and liquid can be manually added to the liquid storage container 20.

[0058] Specifically, refer to Figure 2 and Figure 6 A retaining rib 311 is provided in the water hole 314. The retaining rib 311 extends to both sides of the water hole 314. The portion of the retaining rib 311 extending into the liquid inlet chamber 301 is configured as a blocking portion 313, and the other portion of the retaining rib 311 is configured as a triggering portion 312. A connecting rib 315 extends from the edge of the water hole 314 and extends into the liquid inlet chamber 301. The edge of the connecting rib 315 engages with the retaining portion 313. Specifically, the retaining rib 311 is provided in the middle of the water hole 314. The triggering portion 312 and the retaining portion 313 are both provided on the retaining rib 311, and the triggering portion 312 is spaced apart from the edge of the water hole 314. This allows the triggering portion 312 to be close to the center of the water hole 314 without affecting the connection of the water hole 314. This allows the force applied when pressing against the liquid inlet check valve 37 to be more uniform. At the same time, the retaining portion 313 can block and buffer the liquid inlet of the inlet channel 303, thereby preventing large liquid fluctuations from affecting the detection of the pressure sensor 35. In addition, the edge of the connecting rib 315 is engaged with the retaining rib 311 , which can improve the structural strength of the retaining rib 311 .

[0059] Reference Figure 7 In some embodiments, a buffer seat 50 is provided on the liquid inlet pipeline 40, and the buffer seat 50 has an inflow channel 501, an outflow channel 502 and a buffer cavity 503. The buffer cavity 503 is connected and arranged between the inflow channel 501 and the outflow channel 502, and part of the cavity wall of the buffer cavity 503 is constructed as a second diaphragm 56.

[0060] In some embodiments, the inflow channel 501 and the outflow channel 502 both extend in a horizontal direction, and the second diaphragm 56 helps define the buffer chamber 503 .

[0061] Part of the wall of the buffer chamber 503 is constructed as a second diaphragm 56. This absorbs the kinetic energy of the liquid flow, providing a buffer for complex liquid flows. Without the second diaphragm 56 and the buffer chamber 503, the impact of the liquid flow during liquid inflow would prevent the pressure sensor 35 in the liquid inlet seat 30 from accurately detecting pressure. The second diaphragm 56 can also be constructed as a silicon diaphragm to reliably seal the buffer chamber 503.

[0062] When liquid is automatically introduced through the liquid inlet pipe 40, the liquid flow will have an impact force. Due to the impact of the liquid flow, the detection result of the pressure sensor 35 in the liquid inlet seat 30 group will be higher. The provision of the buffer seat 50 can reduce the impact of the liquid flow impact and ensure the measurement accuracy of the pressure sensor 35 on the liquid inlet seat 30. At the same time, it can also prevent splashing when the liquid is introduced into the liquid storage container 20.

[0063] Furthermore, a flow restriction hole 511 is formed at one end of the inflow channel 501 facing the buffer chamber 503. The cross-sectional area of ​​the inflow channel 501 is smallest at the flow restriction hole 511, and the minimum cross-sectional area of ​​the outflow channel 502 is larger than the cross-sectional area of ​​the flow restriction hole 511. The provision of the flow restriction hole 511 reduces the cross-sectional area of ​​the inlet of the inflow channel 501, thereby reducing the flow rate of the liquid and thus achieving a throttling effect. The minimum cross-sectional area of ​​the outflow channel 502 is larger than the cross-sectional area of ​​the flow restriction hole 511, thereby reducing the flow velocity of the liquid, thereby further reducing the impact of the liquid flow on the pressure sensor 35.

[0064] The minimum cross-sectional area of ​​the outflow channel 502 is 2 to 5 times the cross-sectional area of ​​the flow restriction hole 511, and / or the diameter of the flow restriction hole 511 is between 1.1 mm and 1.5 mm. A small cross-sectional area of ​​the flow restriction hole 511 results in a slow flow rate, which does not meet the flow rate requirements for the final output beverage. A large cross-sectional area of ​​the flow restriction hole 511 results in high pressure of the liquid entering the inflow channel 501, which can cause splashing at the liquid inlet 21 of the liquid storage container 20. The above-mentioned restrictions on the cross-sectional areas of the inflow channel 501 and the outflow channel 502 can both meet the flow rate requirements for the final output beverage and prevent splashing at the liquid inlet 21 of the liquid storage container 20.

[0065] In some embodiments, a liquid barrier 531 is disposed within the buffer chamber 503. The liquid barrier 531 is positioned in the inflow direction of the inflow channel 501, and its extension direction intersects the outflow direction of the outflow channel 502. The liquid barrier 531 can block the liquid flow from the inflow channel 501, thereby reducing the flow rate and further providing a buffering effect. The liquid flow, redirected by the liquid barrier 531, flows out of the outflow channel 502.

[0066] Specifically, the buffer seat 50 includes a base 51 and a pressure cover 52 connected to the base 51. The buffer seat 50 also includes a second diaphragm 56 disposed between the base 51 and the pressure cover 52. The second diaphragm 56 and the base 51 together define a buffer cavity 503. The outflow direction of the outflow channel 502 is not collinear with the inflow direction of the inflow channel 501. Figure 7 As shown, the horizontal position of the outflow channel 502 is higher than the horizontal position of the inflow channel 501.

[0067] The inflow direction can be understood as the flow direction of the liquid in the inflow channel 501. Figure 7 The direction of the arrow in the inflow channel 501, the outflow direction can be understood as the flow direction of the liquid in the outflow channel 502 to form a liquid flow, which can be referred to Figure 7 The direction of the arrow in the outflow channel 502.

[0068] A recess 53 is provided in the buffer cavity 503 near the inflow channel 501 , and the sidewall of the recess 53 is configured as a liquid blocking portion 531 . This simplifies the structure of the buffer seat 50 , facilitates manufacturing, and reduces costs.

[0069] In some embodiments, a solenoid valve 60 is disposed between the buffer seat 50 and the liquid inlet seat 30. The solenoid valve 60 controls the flow of liquid into the liquid storage container 20. When the pressure signal detected by the pressure sensor 35 indicates that the liquid in the liquid storage container 20 has reached its maximum level, the solenoid valve 60 opens, thereby stopping liquid inflow. During beverage preparation or dispensing, the pressure sensor 35 operates normally, monitoring the liquid level in the liquid storage container 20 in real time and displaying the current level. When the pressure signal detected by the pressure sensor 35 indicates that the liquid in the liquid storage container 20 has reached its minimum level, the solenoid valve 60 opens, resuming liquid supply.

[0070] The pressure sensor 35 and the electromagnetic valve 60 are provided to realize liquid fullness detection when the liquid storage container 20 is replenished, real-time liquid level monitoring of the liquid storage container 20, and automatic liquid replenishment when the liquid storage container 20 reaches the lowest liquid level.

[0071] The present invention further provides a beverage machine system including a beverage brewing device. The beverage machine system includes the liquid supply device 100 as described in the aforementioned embodiment, wherein the upstream of the liquid inlet pipe 40 is connected to a water supply source or the beverage brewing device. The beverage brewing device can be a device for brewing, extracting, or other beverages.

[0072] In a specific application scenario, the liquid storage container 20 is used to store water needed for making beverages, and the upstream of the liquid inlet pipe 40 is connected to a water supply source, through which water is replenished in the liquid storage container 20. The water supply source can be tap water or bottled water.

[0073] In another specific application scenario, the liquid storage container 20 is used to store prepared beverage liquid. The upstream of the liquid inlet pipe 40 is connected to a beverage brewing device. The pressure sensor 35 is used to detect the remaining amount of beverage liquid in the liquid storage container 20. When the remaining amount is low, the beverage brewing device is used to prepare new beverage liquid to replenish the liquid. The beverage liquid can be, for example, coffee liquid, tea liquid, etc.

[0074] By setting the pressure sensor 35 at the liquid inlet 21, the interference of liquid fluctuations during liquid output on liquid level detection is avoided, the accuracy of liquid level detection is improved, and the reliability of real-time monitoring of the liquid level is ensured; the buffer seat 50 is set to prevent splashing when the liquid storage container 20 is filled with liquid, thereby ensuring the accurate measurement of the pressure sensor 35 on the liquid inlet seat 30.

[0075] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0076] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A liquid supply device, characterized in that: include: A liquid storage container, wherein the liquid storage container is provided with a liquid inlet and a liquid outlet; A liquid inlet seat is connected to the liquid inlet, and is provided with a liquid inlet cavity and a sealing cavity which are independent of each other, and pressure is transmitted between the liquid inlet cavity and the sealing cavity; a liquid inlet pipeline, connected to the liquid inlet through the liquid inlet cavity; A pressure sensor is connected to the liquid inlet seat, and the pressure sensor detects the pressure in the sealed cavity and generates a pressure signal, and the pressure signal is used to form liquid level information of the liquid storage container.

2. The liquid supply device according to claim 1, characterized in that The liquid inlet and the liquid outlet are both arranged at the bottom of the liquid storage container, or the liquid inlet and the liquid outlet are both arranged at the side of the liquid storage container.

3. The liquid supply device according to claim 1, wherein: The liquid inlet seat includes a main body and a cover member connected to the main body, and the liquid inlet seat also includes a first diaphragm arranged between the liquid inlet cavity and the sealing cavity; The liquid inlet cavity is defined by the main body and the first diaphragm, the sealing cavity is defined by the cover member and the first diaphragm, and pressure is transmitted between the liquid inlet cavity and the sealing cavity through the first diaphragm; The main body is provided with an inlet channel communicating with the liquid inlet cavity, and the inlet channel is communicated with the liquid inlet pipeline.

4. The liquid supply device according to claim 3, characterized in that The pressure sensor is connected to the cover component, the sealed cavity is configured as a conical cavity, and the pressure sensor includes a pressure detection portion, which passes through the cover component and extends into the sealed cavity.

5. The liquid supply device according to claim 1, wherein: The liquid storage container is detachably connected to the liquid inlet seat, a liquid inlet check valve is provided at the liquid inlet, and a trigger portion protruding toward the liquid storage container is provided on the liquid inlet seat, and the trigger portion abuts against the liquid inlet check valve to open the liquid inlet; A water hole is provided on the liquid inlet seat, and the liquid inlet cavity is connected with the liquid inlet port through the water hole. A blocking portion is provided on the side of the water hole facing the liquid inlet cavity. An inlet channel connecting the liquid inlet cavity and the liquid inlet pipeline is provided on the liquid inlet seat, and the blocking portion is arranged in the entry direction of the inlet channel.

6. The liquid supply device according to claim 5, characterized in that A retaining rib is provided in the water hole, and the retaining rib extends to both sides of the water hole respectively. The portion of the retaining rib extending into the liquid inlet cavity is configured as the blocking portion, and the other portion of the retaining rib is configured as the triggering portion. The edge of the water hole extends out of a connecting rib that extends into the liquid inlet cavity, and the edge of the connecting rib is engaged with the blocking portion.

7. The liquid supply device according to any one of claims 1 to 6, characterized in that: A buffer seat is provided on the liquid inlet pipeline, and the buffer seat has an inflow channel, an outflow channel and a buffer cavity. The buffer cavity is connected and arranged between the inflow channel and the outflow channel, and part of the cavity wall of the buffer cavity is constructed as a second diaphragm.

8. The liquid supply device according to claim 7, characterized in that: The inflow channel forms a flow-limiting hole at one end facing the buffer cavity, and the cross-sectional area of ​​the inflow channel at the flow-limiting hole is the smallest; The cross-sectional area of ​​the flow-limiting hole and the minimum cross-sectional area of ​​the outflow channel satisfy at least one of the following characteristics: The minimum cross-sectional area of ​​the outflow channel is larger than the cross-sectional area of ​​the flow limiting hole; The minimum cross-sectional area of ​​the outflow channel is 2 to 5 times the cross-sectional area of ​​the flow restriction hole; The diameter of the flow limiting hole is between 1.1 mm and 1.5 mm.

9. The liquid supply device according to claim 7, characterized in that: A liquid blocking portion is provided in the buffer cavity, and the liquid blocking portion is provided in the inflow direction of the inflow channel. An extending direction of the liquid blocking portion intersects with an outflow direction of the outflow channel.

10. The liquid supply device according to claim 9, characterized in that: The buffer seat includes a base and a pressure cover connected to the base, and the buffer seat also includes a second diaphragm arranged between the base and the pressure cover, and the second diaphragm and the base jointly define the buffer cavity; The outflow direction of the outflow channel is not collinear with the inflow direction of the inflow channel; A recess is provided in the buffer cavity near the inflow channel, and a side wall of the recess is configured as the liquid blocking portion.

11. A beverage machine system, comprising a beverage brewing device, characterized in that: The beverage machine system comprises the liquid supply device according to any one of claims 1 to 10, and the upstream of the liquid inlet pipe is connected to a water supply source or the beverage brewing device.

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