Liquid supply assembly, beverage preparation machine and control method thereof

Abstract

The present disclosure relates to a liquid supply component, a beverage preparation machine and a control method thereof. The liquid supply component comprises a liquid supply pump, a heat exchange structure and a semiconductor refrigerator. A heat exchange channel for liquid to flow through is formed inside the heat exchange structure. A heat exchange inlet and a heat exchange outlet connected to the heat exchange channel are formed on the heat exchange structure. The outlet of the liquid supply pump is connected to the heat exchange inlet, and the heat exchange outlet is connected to an extraction component of the beverage preparation machine. The semiconductor refrigerator has a first surface and a second surface opposite to each other. The first surface is thermally conductively attached to the heat exchange structure. The semiconductor refrigerator has a first terminal and a second terminal for connecting to a circuit. The semiconductor refrigerator has a cooling mode and a heating mode. In the cooling mode, the current in the semiconductor refrigerator flows from the first terminal to the second terminal, and the first surface can absorb the heat of the liquid in the heat exchange channel. In the heating mode, the current in the semiconductor refrigerator flows from the second terminal to the first terminal, and the first surface can release heat to the liquid in the heat exchange channel.

Description

Technical Field

[0001] The present disclosure relates to the technical field of beverage preparation, and in particular, to a liquid supply assembly, a beverage preparation machine and a control method thereof. Background Art

[0002] With the improvement of the quality of life, the functions of beverage preparation machines (such as coffee machines or tea machines) on the market are gradually increasing to meet the needs of consumers for different types of beverages. Beverage preparation machines in related technologies are usually equipped with independent refrigeration components and heating components to meet the needs of preparing cold drinks and hot drinks respectively. However, two independent refrigeration components and heating components will make the internal structure of the beverage preparation machine complicated and increase the hardware cost. Summary of the invention

[0003] The purpose of the present disclosure is to provide a liquid supply assembly, a beverage preparation machine and a control method thereof to solve the technical problems existing in the related art.

[0004] In order to achieve the above-mentioned object, the present disclosure provides a liquid supply component of a beverage preparation machine in a first aspect, comprising a liquid supply pump, a heat exchange structure and a semiconductor refrigerator, wherein a heat exchange channel for liquid to flow is formed inside the heat exchange structure, a heat exchange inlet and a heat exchange outlet both connected to the heat exchange channel are formed on the heat exchange structure, the outlet of the liquid supply pump is connected to the heat exchange inlet, and the heat exchange outlet is used to be connected to an extraction component of the beverage preparation machine;

[0005] The semiconductor refrigerator has a first surface and a second surface opposite to each other, the first surface is thermally attached to the heat exchange structure, and the semiconductor refrigerator has a first terminal and a second terminal for connecting to a circuit;

[0006] Among them, the semiconductor refrigerator has a cooling mode and a heating mode. In the cooling mode, the current in the semiconductor refrigerator flows from the first terminal to the second terminal, and the first surface can absorb the heat of the liquid in the heat exchange channel. In the heating mode, the current in the semiconductor refrigerator flows from the second terminal to the first terminal, and the first surface can release heat to the liquid in the heat exchange channel.

[0007] Optionally, the first surface and the second surface are opposite to each other along a thickness direction of the semiconductor refrigerator, and the heat exchange structure and the semiconductor refrigerator are stacked in the thickness direction of the heat exchange structure.

[0008] Optionally, the heat exchange structure further includes a temperature sensor, which is disposed in the heat exchange channel and is used to detect the temperature of the liquid in the heat exchange channel.

[0009] Optionally, the liquid supply assembly further includes a heat sink, and the heat sink is thermally bonded to the second surface.

[0010] Optionally, the first surface is bonded to the heat exchange structure via a heat conductive structural adhesive layer, and the second surface is bonded to the heat sink via a heat conductive structural adhesive layer; or,

[0011] The liquid supply component also includes a clamping structure, the first surface and the heat exchange structure are thermally bonded via thermal grease, the radiator and the second surface are thermally bonded via thermal grease, and the heat exchange structure, the semiconductor refrigerator and the radiator are fixed via the clamping structure.

[0012] Optionally, the liquid supply pump is a peristaltic pump.

[0013] A second aspect of the present disclosure provides a beverage preparation machine, comprising an extraction component and the above-mentioned liquid supply component, wherein the extraction component comprises an extractor, and the heat exchange outlet is connected to the extractor.

[0014] A third aspect of the present disclosure provides a control method for a beverage preparation machine, which is used to control the beverage preparation machine. The method comprises:

[0015] Obtaining a target flow rate at an outlet of the extractor;

[0016] Obtaining the actual flow rate at the outlet of the extractor;

[0017] Based on the difference between the actual flow rate and the target flow rate, the rotation speed of the liquid supply pump is controlled in a closed loop.

[0018] Optionally, the beverage preparation machine further comprises an electronic scale, the electronic scale is located below the extractor and the upper portion of the electronic scale is used to carry a beverage container, and obtaining the actual flow rate at the outlet of the extractor comprises:

[0019] Obtaining a first weight measured by the electronic scale at a first time point;

[0020] Obtaining a second weight measured by the electronic scale at a second time point;

[0021] Based on the weight difference between the second weight and the first weight and the time difference between the second time point and the first time point, an actual flow rate at the outlet of the extractor is determined.

[0022] Optionally, the method further comprises:

[0023] Get the target temperature;

[0024] Obtaining the actual temperature of the liquid in the heat exchange flow channel;

[0025] Based on the difference between the actual temperature and the target temperature, a current value input to the semiconductor cooler is closed-loop controlled.

[0026] Through the above technical solution, the liquid supply component can provide refrigerated liquid or heated liquid to the extraction component of the beverage preparation machine, meet the different needs of the beverage preparation machine, and improve the functionality of the beverage preparation machine. And the liquid supply component can change the heat exchange relationship between the semiconductor refrigerator and the heat exchange structure by switching the flow direction of the liquid in the semiconductor refrigerator, and change the temperature of the liquid flowing out of the liquid supply component. There is no need to set up two independent refrigeration equipment and heating equipment, which can effectively simplify the structural complexity of the liquid supply component, reduce the cost and occupied space of the liquid supply component, and is conducive to realizing the lightweight and miniaturization of the beverage preparation machine.

[0027] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0029] Figure 1 is a perspective view of a liquid supply assembly of a beverage preparation machine provided by an exemplary embodiment of the present disclosure;

[0030] Figure 2 is an exploded view of a liquid supply assembly of a beverage preparation machine provided by an exemplary embodiment of the present disclosure;

[0031] Figure 3 is an electrical connection diagram of an electronic scale, a liquid supply pump, a temperature sensor, and a controller of a beverage preparation machine provided by an exemplary embodiment of the present disclosure;

[0032] Figure 4 is a flow chart of a control method of a beverage preparation machine provided by an exemplary embodiment of the present disclosure;

[0033] Figure 5 is a flow chart of a control method of a beverage preparation machine provided by another exemplary embodiment of the present disclosure;

[0034] Figure 6 is a flow chart of a control method of a beverage preparation machine provided by another exemplary embodiment of the present disclosure;

[0035] Figure 7 is a block diagram of a beverage preparation machine control device provided by an exemplary embodiment of the present disclosure.

[0036] Description of Reference Numerals

[0037] 1-liquid supply component; 2-liquid supply pump; 3-heat exchange structure; 31-heat exchange inlet; 32-heat exchange outlet; 33-temperature sensor; 4-semiconductor refrigerator; 41-first surface; 42-second surface; 43-first terminal; 44-second terminal; 5-radiator; 51-heating fins; 52-fan; 6-electronic scale; 7-controller. DETAILED DESCRIPTION

[0038] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0039] In the present disclosure, unless otherwise stated, directional terms such as "thickness direction" are used to refer to Figure 2 In the thickness direction shown, "inside" and "outside" refer to the inside and outside of the contour of the relevant parts. In addition, it should be noted that the terms used, such as "first", "second", etc., are used to distinguish one element from another, and do not have order and importance. In addition, in the description with reference to the drawings, the same mark in different drawings represents the same element.

[0040] like Figures 1 to 3 As shown, the first aspect of the present disclosure provides a liquid supply component 1 of a beverage preparation machine, the liquid supply component 1 includes a liquid supply pump 2, a heat exchange structure 3 and a semiconductor refrigerator 4, the heat exchange structure 3 has a heat exchange channel for liquid to flow through formed inside, the heat exchange structure 3 has a heat exchange inlet 31 and a heat exchange outlet 32 ​​both connected to the heat exchange channel, the outlet of the liquid supply pump 2 is connected to the heat exchange inlet 31, and the heat exchange outlet 32 ​​is used to connect to the extraction component of the beverage preparation machine. The semiconductor refrigerator 4 has a first surface 41 and a second surface 42 opposite to each other, the first surface 41 is thermally conductively attached to the heat exchange structure 3, so as to be able to exchange heat with the liquid in the heat exchange channel of the heat exchange structure 3.

[0041] The above-mentioned semiconductor refrigerator 4 has a first terminal 43 and a second terminal 44 for connecting to the circuit. The semiconductor refrigerator 4 has a cooling mode and a heating mode. In the cooling mode, the current in the semiconductor refrigerator 4 flows from the first terminal 43 to the second terminal 44, and the first surface 41 can absorb the heat of the liquid in the heat exchange channel. In the heating mode, the current in the semiconductor refrigerator 4 flows from the second terminal 44 to the first terminal 43, and the first surface 41 can release heat to the liquid in the heat exchange channel.

[0042] It should be noted that the semiconductor refrigerator 4 in the embodiment of the present disclosure refers to a device that uses the thermoelectric effect of a semiconductor to produce cooling capacity. The direction of the current passed into the semiconductor refrigerator 4 is different, and the hot position and the cold position on the semiconductor refrigerator 4 are switched. Regarding the specific structure of the semiconductor refrigerator 4, those skilled in the art can realize it according to relevant technologies, and the present disclosure does not make specific restrictions on this.

[0043] In the above-mentioned liquid supply component 1, the liquid supply pump 2 drives the liquid to enter the heat exchange channel in the heat exchange structure 3, and the first surface 41 of the semiconductor refrigerator 4 is thermally conductively attached to the heat exchange structure 3. When the semiconductor refrigerator 4 is in the cooling mode, the first surface 41 of the semiconductor refrigerator 4 can absorb the heat of the liquid in the heat exchange channel to achieve the cooling effect on the liquid in the heat exchange structure 3, and the cooled liquid flowing out of the heat exchange outlet 32 ​​of the heat exchange structure 3 can enter the extraction component. When the semiconductor refrigerator 4 is in the heating mode, the first surface 41 of the semiconductor refrigerator 4 can release heat to the liquid in the heat exchange channel to achieve the heating effect on the liquid in the heat exchange structure 3, and the heated liquid flowing out of the heat exchange outlet 32 ​​of the heat exchange structure 3 can enter the extraction component.

[0044] As an exemplary application scenario, when the semiconductor refrigerator 4 is in cooling mode, the cooled liquid flowing out of the heat exchange structure 3 can enter the extraction component to realize the cold extraction function of the beverage preparation machine, for example, the beverage preparation machine can realize cold extraction of coffee or cold extraction of tea, etc. When the semiconductor refrigerator 4 is in heating mode, the heated liquid flowing out of the heat exchange structure 3 can enter the extraction component to realize the hot extraction function of the beverage preparation machine, for example, the beverage preparation machine can realize hot extraction of coffee or hot brewed tea, etc.

[0045] Through the above technical solution, the liquid supply component 1 can provide refrigerated liquid or heated liquid to the extraction component of the beverage preparation machine, meet the different needs of the beverage preparation machine, and improve the functionality of the beverage preparation machine. In addition, the liquid supply component 1 can change the heat exchange relationship between the semiconductor refrigerator 4 and the heat exchange structure 3 by switching the flow direction of the liquid in the semiconductor refrigerator 4, and change the temperature of the liquid flowing out of the liquid supply component 1. There is no need to set up two independent refrigeration equipment and heating equipment, which can effectively simplify the structural complexity of the liquid supply component 1, reduce the cost and occupied space of the liquid supply component 1, and is conducive to realizing the lightweight and miniaturization of the beverage preparation machine.

[0046] In the above-mentioned liquid supply component 1, the type and model of the liquid supply pump 2 can be selected according to the needs of the beverage preparation machine. For example, the liquid supply pump 2 can be a centrifugal pump, a self-priming pump or a reciprocating pump. In the application scenario where the beverage preparation machine has a slow extraction requirement, optionally, the liquid supply flow rate of the liquid supply pump 2 can be 0.01ml / s-0.25ml / s. The liquid supply pump 2 supplies liquid to the extraction component of the beverage preparation machine within the above-mentioned liquid supply flow rate range, which can meet the needs of the slow extraction application scenario. For example, the beverage preparation machine can realize the function of cold brew coffee, and the quality of cold brew coffee can be guaranteed within the liquid supply flow rate range, providing a good user experience. As an exemplary embodiment, optionally, the liquid supply pump 2 can be a peristaltic pump, which can meet the performance requirements of low-speed liquid supply.

[0047] The hot position and the cold position of the semiconductor refrigerator 4 will switch when the current direction changes. The first surface 41 of the semiconductor refrigerator 4 in the embodiment of the present disclosure is thermally bonded to the heat exchange structure 3, that is, the first surface 41 of the semiconductor refrigerator 4 is a heat exchange surface. The larger the heat exchange area between the first surface 41 and the heat exchange structure 3, the higher the heat exchange efficiency between the semiconductor refrigerator 4 and the heat exchange structure 3. Optionally, the first surface 41 and the second surface 42 of the semiconductor refrigerator 4 can be opposite to each other along the thickness direction of the semiconductor refrigerator 4, and the heat exchange structure 3 and the semiconductor refrigerator 4 are stacked in the thickness direction of the heat exchange structure 3. In this embodiment, the first surface 41 and the second surface 42 of the semiconductor refrigerator 4 are opposite to each other along the thickness direction of the semiconductor refrigerator 4, and the areas of the first surface 41 and the second surface 42 are larger. The heat exchange structure 3 and the semiconductor refrigerator 4 are stacked in the thickness direction of the heat exchange structure 3, so that the heat exchange mechanism and the semiconductor refrigerator 4 can be bonded to each other with the maximum area, thereby achieving good heat exchange efficiency.

[0048] A heat exchange channel is formed inside the heat exchange structure 3, and the heat exchange channel can be extended in a variety of ways. Optionally, the heat exchange channel can be formed as a serpentine channel to increase the length of the heat exchange channel, which can increase the time for the liquid to circulate in the heat exchange channel, thereby ensuring that the liquid can fully exchange heat with the semiconductor refrigerator 4 through the heat exchange structure 3 to achieve a good cooling or heating effect.

[0049] In the above embodiment, in order to facilitate the arrangement of the heat exchange inlet 31 and the heat exchange outlet 32 ​​, optionally, the heat exchange outlet 32 ​​and the heat exchange inlet 31 may be formed on the same side of the heat exchange structure 3 .

[0050] Optionally, the heat exchange structure 3 may further include a temperature sensor 33, which is disposed in the heat exchange channel and can be used to detect the temperature of the liquid in the heat exchange channel. The temperature sensor 33 may be an infrared temperature sensor or a thermistor temperature sensor, etc., which is not specifically limited in the present disclosure.

[0051] In the above embodiment, optionally, the beverage extractor may further include a controller 7 , which is electrically connected to the temperature sensor 33 , and the controller 7 may be used to control the current value in the semiconductor refrigerator 4 according to the liquid temperature information detected by the temperature sensor 33 .

[0052] When the semiconductor refrigerator 4 is in cooling mode, the first surface 41 of the semiconductor refrigerator 4 is used for cooling, and the second surface 42 of the semiconductor refrigerator 4 is used for heating. In order to reduce the influence of the heat of the second surface 42 on other components in the beverage preparation machine, the liquid supply component 1 may further include a radiator 5, and the radiator 5 is thermally bonded to the second surface 42 to dissipate the heat on the second surface 42. In this embodiment, the heat exchanger may optionally include heat dissipation fins 51 and a fan 52.

[0053] In order to achieve the installation of the liquid supply component 1, as an exemplary embodiment, optionally, the first surface 41 and the heat exchange structure 3 can be bonded by a heat conductive structural adhesive layer, and the second surface 42 and the radiator 5 can be bonded by a heat conductive structural adhesive layer. In this embodiment, the connection and fixing method between the heat exchange structure 3, the semiconductor refrigerator 4 and the radiator 5 is simple, which can further simplify the structural complexity of the liquid supply component 1.

[0054] As another exemplary embodiment, the liquid supply assembly 1 may include a clamping structure, the first surface 41 and the heat exchange structure 3 are thermally bonded by thermal conductive silicone grease, the heat sink 5 and the second surface 42 are thermally bonded by thermal conductive silicone grease, and the heat exchange structure 3, the semiconductor refrigerator 4 and the heat sink 5 are fixed by the clamping structure. The thermal conductive silicone grease has good thermal conductivity, and the heat exchange structure 3, the semiconductor refrigerator 4 and the heat sink 5 are fixed by the clamping structure, which has a more stable structure and makes up for the lack of fixing strength of the thermal conductive silicone grease.

[0055] A second aspect of the present disclosure provides a beverage preparation machine, comprising an extraction component and the above-mentioned liquid supply component 1, wherein the extraction component comprises an extractor, and the heat exchange outlet 32 ​​of the heat exchange structure 3 of the liquid supply component 1 is connected to the extractor.

[0056] The beverage preparation machine mentioned above can be a household coffee machine, a tea maker, a smart tea bar or an automatic tea vending machine, etc. The present disclosure does not limit the specific structure and application scenarios of the beverage preparation machine mentioned above. In the beverage preparation machine mentioned above, since the liquid supply component 1 can provide refrigerated liquid or heated liquid to the extraction component of the beverage preparation machine, the beverage preparation machine can have the functions of hot extraction and cold extraction to meet the different needs of users, and the liquid supply component 1 has low structural complexity and occupies little space. The beverage preparation machine can be simplified and miniaturized while meeting the functional requirements, and has good market prospects.

[0057] Optionally, the beverage preparation machine may further include an electronic scale 6 and a controller 7, wherein the electronic scale 6 is located below the extractor and the upper portion of the electronic scale 6 is used to carry the beverage container, and the electronic scale 6 and the liquid supply pump 2 are both electrically connected to the controller 7. In this embodiment, the controller 7 can obtain the weight and flow rate of the liquid flowing out of the extractor according to the weight change of the beverage container weighed by the electronic scale 6, thereby controlling the liquid supply speed of the heat supply pump, optimizing the preparation parameters of the beverage preparation machine, and improving the preparation quality of the beverage. For example, when the beverage preparation machine is used for cold brew coffee, the controller 7 can change the speed of cold brew coffee in the extractor by controlling the liquid supply speed, thereby improving the quality of cold brew coffee and meeting different needs of users.

[0058] like Figure 4 As shown, the third aspect of the present disclosure provides a control method for a beverage preparation machine, which is used to control the beverage preparation machine as described above. Figure 4 As shown, Figure 4 This is a flow chart of a control method of a beverage preparation machine shown in an exemplary embodiment of the present disclosure. The method may include the following steps:

[0059] In step S401, a target flow rate at the outlet of the extractor is obtained.

[0060] Among them, the target flow rate at the outlet of the extractor can be a target flow rate input by the user, or it can also be a target flow rate pre-set by the beverage preparation machine according to the extraction requirements input by the user. For example, when the user selects the cold brew coffee function of the beverage preparation machine, the controller 7 of the beverage preparation machine obtains the target flow rate at the outlet of the extractor according to the cold brew coffee function. The present disclosure does not make any specific restrictions on this.

[0061] In step S402, the actual flow rate at the outlet of the extractor is obtained.

[0062] Among them, the actual flow rate at the outlet of the extractor can be obtained in a variety of ways. For example, the outlet of the extractor can be provided with a flow rate sensor, or the controller 7 can obtain the actual flow rate at the outlet of the extractor based on the weight of the liquid entering the extractor and the weight change of the extractor. The present disclosure does not make any specific restrictions on this.

[0063] In step S403 , the rotation speed of the liquid supply pump 2 is closed-loop controlled based on the difference between the actual flow rate and the target flow rate.

[0064] Through the control method of the beverage preparation machine mentioned above, the rotation speed of the liquid supply pump 2 can be closed-loop controlled based on the difference between the actual flow rate and the target flow rate, thereby controlling the actual flow rate of the liquid pump 2 pumping liquid into the extractor, ensuring that the extractor can extract according to the set target flow channel, thereby improving the user experience.

[0065] In an embodiment where the beverage preparation machine includes an electronic scale 6, the electronic scale 6 is located below the extractor and the upper portion of the electronic scale 6 is used to hold the beverage container. In this embodiment, obtaining the actual flow rate at the outlet of the extractor may include:

[0066] Obtaining a first weight measured by the electronic scale 6 at a first time point;

[0067] Obtaining a second weight measured by the electronic scale 6 at a second time point;

[0068] Based on the weight difference between the second weight and the first weight and the time difference between the second time point and the first time point, an actual flow rate at the outlet of the extractor is determined.

[0069] In the above control method, based on the weight difference between the second weight and the first weight and the time difference between the second time point and the first time point, the actual flow rate of the outlet of the extractor can be determined, thereby achieving the requirement of obtaining the actual flow rate of the outlet of the extractor. The above embodiment does not need to separately set up a flow sensor or the like to measure the actual flow rate, which can simplify the internal structure of the beverage preparation machine.

[0070] As an exemplary embodiment, Figure 5 As shown, Figure 5 This is a flow chart of another control method of a beverage preparation machine shown in an exemplary embodiment of the present disclosure. The control method in this embodiment may include the following steps:

[0071] In step S501, the actual flow rate at the outlet of the extractor is obtained;

[0072] In step S502, a first weight measured by the electronic scale 6 at a first time point is obtained;

[0073] In step S503, a second weight measured by the electronic scale 6 at a second time point is obtained;

[0074] In step S504, determining an actual flow rate at the outlet of the extractor based on a weight difference between the second weight and the first weight and a time difference between the second time point and the first time point;

[0075] In step S505 , the rotation speed of the liquid supply pump 2 is closed-loop controlled based on the difference between the actual flow rate and the target flow rate.

[0076] like Figure 6 As shown, Figure 6 This is a flow chart of another method for controlling a beverage preparation machine according to an exemplary embodiment of the present disclosure. Optionally, the control method may further include the following steps.

[0077] In step S601, the target temperature is obtained.

[0078] The target temperature may be a temperature manually input by a user, or may be a target temperature automatically generated by the beverage preparation machine according to a target function.

[0079] In step S602, the actual temperature of the liquid in the heat exchange flow channel is obtained.

[0080] The actual temperature of the liquid in the heat exchange channel can be measured by a temperature sensor 33 provided in the heat exchange channel.

[0081] In step S603, based on the difference between the actual temperature and the target temperature, the current value input to the semiconductor refrigerator 4 is closed-loop controlled.

[0082] Through the above control method, based on the difference between the actual temperature and the target temperature, the current value input to the semiconductor refrigerator 4 can be closed-loop controlled, and the efficiency of the semiconductor refrigerator 4 can be closed-loop controlled, thereby adjusting the actual temperature of the liquid in the heat exchange channel to make it close to the target temperature, thereby improving the functionality of the beverage preparation machine.

[0083] Figure 7 is a block diagram of a beverage preparation machine control device 70 in an exemplary embodiment of the present disclosure, the beverage preparation machine control device is applied to the beverage preparation machine, referring to Figure 7 As shown, the beverage preparation machine control device 70 may include a first acquisition module 71 , a second acquisition module 72 and a first control module 73 .

[0084] The first acquisition module 71 is configured to acquire a target flow rate at the outlet of the extractor.

[0085] The second acquisition module 72 is configured to acquire the actual flow rate at the outlet of the extractor.

[0086] The first control module 73 is configured to perform closed-loop control of the rotation speed of the liquid supply pump 2 based on the difference between the actual flow rate and the target flow rate.

[0087] Optionally, the second acquisition module 72 is further configured to acquire a first weight measured by the electronic scale 6 at a first time point;

[0088] Obtaining a second weight measured by the electronic scale 6 at a second time point;

[0089] Based on the weight difference between the second weight and the first weight and the time difference between the second time point and the first time point, an actual flow rate at the outlet of the extractor is determined.

[0090] The beverage preparation machine control device 70 may further include a third acquisition module, a fourth acquisition module and a second control module.

[0091] Wherein, the third acquisition module is configured to acquire the target temperature;

[0092] The fourth acquisition module is configured to acquire the actual temperature of the liquid in the heat exchange flow channel;

[0093] The second control module is configured to perform closed-loop control of the current value input to the semiconductor refrigerator 4 based on the difference between the actual temperature and the target temperature.

[0094] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0095] In another exemplary embodiment, a computer program product is also provided, which contains a computer program executable by a programmable device, and has code portions for executing the control method of the beverage preparation machine described above when the computer program is executed by the programmable device.

[0096] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0097] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0098] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A liquid supply assembly for a beverage preparation machine, characterized in that: The invention comprises a liquid supply pump, a heat exchange structure and a semiconductor refrigerator, wherein a heat exchange channel for liquid to flow is formed inside the heat exchange structure, a heat exchange inlet and a heat exchange outlet are formed on the heat exchange structure, both of which are connected to the heat exchange channel, the outlet of the liquid supply pump is connected to the heat exchange inlet, and the heat exchange outlet is used to connect to the extraction component of the beverage preparation machine; The semiconductor refrigerator has a first surface and a second surface opposite to each other, the first surface is thermally attached to the heat exchange structure, and the semiconductor refrigerator has a first terminal and a second terminal for connecting to a circuit; Among them, the semiconductor refrigerator has a cooling mode and a heating mode. In the cooling mode, the current in the semiconductor refrigerator flows from the first terminal to the second terminal, and the first surface can absorb the heat of the liquid in the heat exchange channel. In the heating mode, the current in the semiconductor refrigerator flows from the second terminal to the first terminal, and the first surface can release heat to the liquid in the heat exchange channel.

2. The liquid supply assembly according to claim 1, characterized in that: The first surface and the second surface are opposite to each other along the thickness direction of the semiconductor refrigerator, and the heat exchange structure and the semiconductor refrigerator are stacked in the thickness direction of the heat exchange structure.

3. The liquid supply assembly according to claim 1, characterized in that: The heat exchange structure further includes a temperature sensor, which is disposed in the heat exchange channel and is used to detect the temperature of the liquid in the heat exchange channel.

4. The liquid supply assembly according to any one of claims 1 to 3, characterized in that: The liquid supply assembly also includes a heat sink, and the heat sink is thermally bonded to the second surface.

5. The liquid supply assembly according to claim 4, characterized in that: The first surface is bonded to the heat exchange structure via a heat conductive structural adhesive layer, and the second surface is bonded to the heat sink via a heat conductive structural adhesive layer; or, The liquid supply component also includes a clamping structure, the first surface and the heat exchange structure are thermally bonded via thermal grease, the radiator and the second surface are thermally bonded via thermal grease, and the heat exchange structure, the semiconductor refrigerator and the radiator are fixed via the clamping structure.

6. The liquid supply assembly according to any one of claims 1 to 3, characterized in that: The liquid supply pump is a peristaltic pump.

7. A beverage preparation machine, characterized in that: It comprises an extraction component and a liquid supply component as described in any one of claims 1 to 6, wherein the extraction component comprises an extractor, and the heat exchange outlet is connected to the extractor.

8. A method for controlling a beverage preparation machine, for controlling the beverage preparation machine according to claim 7, characterized in that: The method comprises: Obtaining a target flow rate at an outlet of the extractor; Obtaining the actual flow rate at the outlet of the extractor; Based on the difference between the actual flow rate and the target flow rate, the rotation speed of the liquid supply pump is controlled in a closed loop.

9. The control method according to claim 8, characterized in that: The beverage preparation machine further includes an electronic scale, which is located below the extractor and above which the beverage container is used to be carried. The actual flow rate at the outlet of the extractor is obtained by: Obtaining a first weight measured by the electronic scale at a first time point; Obtaining a second weight measured by the electronic scale at a second time point; Based on the weight difference between the second weight and the first weight and the time difference between the second time point and the first time point, an actual flow rate at the outlet of the extractor is determined.

10. The control method according to claim 8, characterized in that: The method further comprises: Get the target temperature; Obtaining the actual temperature of the liquid in the heat exchange flow channel; Based on the difference between the actual temperature and the target temperature, a current value input to the semiconductor cooler is closed-loop controlled.

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