Funnel for the extraction of coffee and coffee machine for cold drinks

Abstract

The utility model discloses a funnel and cold drink coffee machine for extracting coffee belongs to coffee machine technology, and the existing ice drop coffee machine utilizes the product structure complex of ice water extraction coffee beverage existence, and the commonality is poor, and the cold water cannot be provided, the utility model discloses a funnel for extracting coffee is defined by the outer wall and the inner wall interlayer inner chamber, and the water inlet and the water outlet of interlayer inner chamber are set up on the outer wall, and coffee machine and cold water machine are connected through water supply pipe and return pipe, and coffee beverage is extracted by coffee machine, and cold water is provided by cold water machine, and cold water flows in cooling circulation water loop by water pump, and cold water cools coffee beverage in funnel to the cold drink of required temperature and then flows out from funnel. Coffee machine has two functions of extracting cold drink and hot drink, and the commonality of coffee machine is increased. And cold water machine can work independently, and can also be connected with coffee machine to work, and the working mode is flexible and various.

Description

Technical Field

[0001] This utility model belongs to the field of coffee machine technology, specifically relating to a coffee extraction funnel and a cold drink coffee machine. Background Technology

[0002] Coffee machines make coffee beverages in two ways: some use hot water to extract coffee grounds for a hot drink, while others use cold water for a cold drink. The different extraction methods result in beverages with different tastes.

[0003] Patent document CN223054278U discloses an ice drip coffee machine that uses a cooling block to cool room-temperature liquid water dripping into the coffee machine, thereby enabling the production of ice drip coffee with or without ice.

[0004] Patent document CN118104965A discloses an ice drip coffee machine, which includes a refrigeration mechanism and a first fan. The cooling side of the refrigeration mechanism releases cold energy into the cooling chamber, creating a low-temperature environment for brewing coffee. The first fan and the heat dissipation side of the refrigeration mechanism are located within an air duct in the machine body, connected to the brewing chamber via a connecting hole. The first fan blows heat from the heat dissipation side into the brewing chamber to accelerate ice melting. By transferring the heat generated by the machine's own refrigeration mechanism to the brewing chamber, ice melting is accelerated, reducing energy consumption. This allows for coffee brewing in a low-temperature environment, providing immediate consumption after brewing and shortening the user's waiting time.

[0005] Patent document CN118021149A discloses a coffee cooling device, coffee machine, and coffee cooling method. The coffee cooling device includes a water tank module, a water circulation module, and a refrigeration module. During coffee making, a compressor is activated to generate a second cooling medium, and simultaneously, a condenser is activated to cool the second cooling medium, allowing the low-temperature second cooling medium to enter the refrigeration pipe. Then, a heat exchanger and a circulating water pump are activated, allowing a first cooling medium to enter the water tank body from the inlet pipe, thus achieving circulation between the heat exchanger and the water tank body. The second cooling medium and the first cooling medium exchange heat inside the heat exchanger, allowing the second cooling medium to continuously cool the first cooling medium. Coffee liquid is poured in through a first inlet, allowing the coffee liquid to enter a first heat dissipation pipe, where the first cooling medium cools the coffee liquid. This achieves continuous coffee making and continuous coffee cooling.

[0006] Patent document CN222383016U discloses an ice chamber device, a water system for a coffee machine, and a coffee machine. The ice chamber device includes an ice chamber and an evaporator tube for cooling. The ice chamber includes an inner ice chamber and an outer ice chamber that are interconnected, with the inner ice chamber located inside the outer ice chamber. Evaporator tubes are installed in both the inner and outer ice chambers. A circulating water inlet is provided on the outer ice chamber, which is connected to a water pump. A first water inlet is provided on the inner ice chamber, connecting the inner and outer ice chambers, allowing water from the outer ice chamber to enter the inner ice chamber through the first water inlet. The ice chamber device has a water outlet connected to the inner ice chamber, allowing water from the inner ice chamber to exit through the water outlet. The water temperature in the inner ice chamber is lower than that in the outer ice chamber. The outer ice chamber can receive room temperature water, and the water from the outer ice chamber can enter the inner ice chamber through the first water inlet, allowing the inner ice chamber to continuously provide constant-temperature chilled water, thus shortening the chilled water preparation time.

[0007] The coffee machine disclosed in the patent documents above is specifically designed for making iced drip coffee, has poor versatility, and cannot provide cold water. Utility Model Content

[0008] This invention addresses the shortcomings of existing ice drip coffee machines, which use ice water to extract coffee beverages, including complex product structure, poor versatility, and inability to provide cold water. It provides a coffee extraction funnel and a cold beverage coffee machine that allows circulating cold water to be introduced into the inner cavity of the funnel as needed to cool the coffee beverage into a cold drink. When cold beverages are not needed, no cold water needs to be introduced into the inner cavity of the funnel, thus maintaining the coffee beverage at its original temperature. Furthermore, it features separate coffee machine and chiller, allowing them to be connected together or used independently as needed, providing versatility and enabling the chiller to provide cold water.

[0009] To achieve the above objectives, the present invention provides a funnel for extracting coffee, which is funnel-shaped with a larger radial profile at the upper end than at the lower end. It has an open top and a coffee outlet at the lower end. Its features are: an inner cavity is defined by an outer wall and an inner wall, and an inlet and an outlet communicating with the inner cavity are provided on the outer wall. The inner wall is made of a heat-conducting material.

[0010] Therefore, when cooling the coffee beverage is needed, cold water is introduced into the inner cavity of the funnel through the inlet and then flows out through the outlet. The thermal conductivity of the inner wall cools the coffee beverage in the funnel to the desired temperature, resulting in a cold drink. When cooling is not needed, there is no need to introduce cold water into the inner cavity of the funnel, thus maintaining the extracted coffee beverage at its original temperature. This gives the funnel the dual purpose of dispensing both cold and hot beverages. The hot beverage, in contrast to the cold beverage, is the coffee beverage that has not been cooled by cold water and retains its original temperature after extraction.

[0011] Preferably, both the outer and inner walls are made of stainless steel, and their upper ends are welded and sealed together, as are their lower ends. This ensures the airtightness of the interlayer cavity.

[0012] Preferably, the outer wall has a groove recessed into the inner cavity of the jacket, with the inlet and outlet located on opposite sides of the groove. This groove separates the inlet and outlet, increasing the flow path of cold water within the jacket cavity, allowing for sufficient heat exchange with the extracted coffee beverage, and accelerating the cooling process.

[0013] Preferably, the groove extends from the upper end to the lower end of the outer wall. This ensures the regularity of the funnel and increases the flow path of cold water within the interlayer cavity.

[0014] Preferably, the outer wall contacts the inner wall at the groove. Accordingly, the inlet and outlet are completely isolated at the groove, forcing the cold water entering the interlayer cavity from the inlet to flow through a longer path before flowing out from the outlet.

[0015] The cold drink coffee machine of this utility model includes: A coffee machine is equipped with a funnel of this invention, a water inlet connected to the water inlet, and a water outlet connected to the water outlet. A filter for holding coffee powder is placed inside the funnel, and a valve plug is provided at the coffee outlet for opening or closing the coffee outlet. A chiller is equipped with a chilled water container, a water supply interface and a water return interface. The chilled water container has a water supply port and a water return port. The water supply interface is connected to the water supply port and the water return interface is connected to the water return port. Water supply pipe and return pipe, the water supply pipe is detachably connected to the water supply interface and the water inlet interface, and the return pipe is detachably connected to the return interface and the water outlet interface, forming a cooling water circulation loop between the cold water container and the inner cavity of the jacket; A water pump, which is arranged in the cooling water circulation loop, is used to transport cold water from the cold water container to the inner cavity of the jacket and then back from the inner cavity of the jacket to the cold water container.

[0016] Therefore, when the water supply and return pipes connect the coffee machine and the chiller, the coffee machine extracts the coffee beverage, while the chiller provides cold water. A water pump circulates this cold water in a cooling water loop, cooling the coffee beverage in the funnel to the desired temperature before it flows out. When the coffee machine and chiller are not connected by the water supply and return pipes, they operate independently. The coffee extracted by the coffee machine flows directly from the funnel without cooling, maintaining its original temperature. The chiller is either idle or used to provide cold water. Thus, the coffee machine has the function of extracting both cold and hot beverages, increasing its versatility. The chiller can operate independently or connected to the coffee machine, offering flexible operating modes.

[0017] Preferably, the water supply interface and the return interface are located side by side at the first connector, and the water inlet interface and the water outlet interface are located side by side at the second connector, with the water supply pipe and the return pipe arranged side by side into a single water supply fitting. Accordingly, the water supply pipe and the return pipe can be connected by connecting the water supply fitting to the first connector and the second connector, increasing the convenience of the connection.

[0018] Preferably, the cold beverage coffee machine includes a water inlet fitting for connecting to the water supply interface. When the chiller is operating alone, the water inlet fitting is connected to the water supply interface to output cold water.

[0019] Preferably, a first position switch is provided at the water supply interface and the return interface, and a second position switch is provided at the water inlet interface and the water outlet interface. When the water supply pipe and the return pipe are connected in place, the first and second position switches are triggered, allowing the water pump to start. This ensures the reliability of operation, and in particular, prevents cold water from leaking from the connection points.

[0020] Preferably, the water supply inlet is located at the lower part of the cold water container, and the water return inlet is located at the higher part of the cold water container, with the water supply inlet lower than the water return inlet. This allows the water return inlet to be higher than the water surface, reducing the resistance to water return.

[0021] Preferably, the cold beverage coffee machine includes a rotating frame rotatably mounted on the machine body. A first water pipe connected to a water inlet and a second water pipe connected to a water outlet are fixed on the machine body. A first sealing pipe and a second sealing pipe are disposed on the rotating frame. When the rotating frame is rotated to the working position, the first water pipe connects to the first sealing pipe, and the second water pipe connects to the second sealing pipe. The water inlet is connected to the water inlet via the first sealing pipe and the first water pipe, and the water outlet is connected to the water outlet via the second sealing pipe and the second water pipe. When the rotating frame is rotated away from the working position, the first water pipe and the first sealing pipe disconnect, and the second water pipe and the second sealing pipe disconnect. Accordingly, the funnel can be rotated out of the machine body by rotating the rotating frame, and the cold water path is sealed when the rotating frame is rotated to the working position.

[0022] Preferably, the funnel is placed on and can be removed from the rotating frame. When the funnel is placed on the rotating frame, the inlet is connected to the first sealing tube and the outlet is connected to the second sealing tube. When the funnel is removed from the rotating frame, the inlet is disconnected from the first sealing tube and the outlet is disconnected from the second sealing tube. Removing the funnel facilitates cleaning. The first and second sealing tubes ensure both ease of removal from the rotating frame and a tight seal when the funnel is placed back into the rotating frame.

[0023] Preferably, the rotating frame and the funnel are equipped with a positioning guide structure for guiding and positioning the funnel onto the rotating frame. This positioning guide structure can guide the funnel into and out of the rotating frame, and can also position the funnel after it is installed on the rotating frame, preventing leakage at the inlet and outlet caused by the movement of the funnel.

[0024] Preferably, the positioning and guiding structure includes a groove on the outer wall of the funnel and a rib on the rotating frame, with the rib located inside the groove when the funnel is placed on the rotating frame. Therefore, the groove serves the dual purpose of separating the inlet and outlet and guiding and positioning, resulting in a compact structure and convenient placement and removal of the funnel.

[0025] Preferably, the machine body is equipped with a third position switch, which is triggered when the swivel mount reaches the working position, allowing the coffee machine to be started. This prevents the coffee machine from being started before the swivel mount has fully rotated into position.

[0026] Preferably, the water pumps include a first water pump and a second water pump. The first water pump is attached to the chiller and connected between the water supply interface and the chilled water container. The second water pump is attached to the coffee machine and connected between the second water pipe and the outlet interface. Accordingly, utilizing the shut-off function of the first water pump, when the first water pump is not running, such as when the chiller is operating alone, the water supply interface can be closed. When chilled water is needed, the first water pump is activated, supplying water through the water supply interface. The second water pump is located after the outlet; therefore, when the first and second water pumps are activated, the second water pump exerts a suction effect on the water flow preceding it, thereby reducing the water pressure between the first and second water pumps and preventing leakage at both ends of the first and second sealing pipes.

[0027] Preferably, the flow rate of the second water pump is not less than that of the first water pump. This reduces the water pressure generated by the first water pump to zero or negative pressure, thereby ensuring that there is no leakage at both ends of the first and second sealing pipes. Moreover, even if the joint between the two ends of the first and second sealing pipes is not tightly sealed, the suction force of the second water pump will prevent leakage at both ends of the first and second sealing pipes.

[0028] Preferably, the valve plug is mounted on a rocker arm, which is oscillatingly mounted on a rotating frame. The machine body has a oscillating push rod, which is driven by a power source to oscillate. When the rotating frame is in the working position, the rocker arm and the push rod maintain transmission. The oscillation of the push rod causes the rocker arm to oscillate, changing the position of the valve plug relative to the coffee outlet to open or close the coffee outlet. When the rotating frame moves away from the working position, the rocker arm and the push rod disengage. This structure, which places the rocker arm on the rotating frame and the push rod on the machine body, maintains the positional relationship between the valve plug and the coffee outlet even when the rotating frame is rotated.

[0029] Preferably, the chiller includes a compressor, an evaporator coil, and a condenser coil connected in the refrigerant circuit. The chilled water container includes a heat-conducting barrel, a chassis, and an outer cylinder. The heat-conducting barrel is located on the upper side of the chassis, the evaporator coil is located between the heat-conducting barrel and the chassis, and the outer cylinder surrounds the chassis, evaporator coil, and heat-conducting barrel for insulation. This chiller structure can continuously cool chilled water, maintaining it at the required temperature, and the chilled water container has excellent insulation properties, reducing the chiller's energy consumption.

[0030] This invention utilizes a funnel for coffee extraction, with an outer and inner wall defining a sandwich cavity. An inlet and outlet are located on the outer wall, connecting to the sandwich cavity, while the inner wall is made of a heat-conducting material. Cold water can be introduced into the sandwich cavity through the inlet and then flows out through the outlet. The heat conductivity of the inner wall cools the coffee beverage in the funnel to the desired temperature, resulting in a chilled drink. When chilling is not desired, there is no need to introduce cold water into the sandwich cavity, thus maintaining the extracted coffee beverage at its original temperature. This gives the funnel the dual purpose of dispensing both chilled and hot drinks. The hot drink, in contrast to the chilled drink, is the coffee beverage that retains its original temperature after extraction without being cooled by cold water.

[0031] This invention connects a coffee machine and a chiller via supply and return water pipes. The coffee machine extracts coffee, while the chiller provides cold water. A water pump circulates the cold water in a cooling water loop, cooling the coffee in the funnel to the desired temperature before it flows out. When the coffee machine and chiller are not connected, they operate independently. The coffee extracted by the coffee machine flows directly from the funnel without cooling, maintaining its original temperature. The chiller is either idle or used to provide cold water. Therefore, the coffee machine has both cold and hot beverage extraction functions, increasing its versatility. The chiller can operate independently or connected to the coffee machine, offering flexible operating modes. Attached Figure Description

[0032] Figure 1 This is an axonometric view of the cold beverage coffee machine of this utility model. Figure 2 This is an axonometric view of the cold drink coffee machine of this utility model from another perspective; Figure 3 for Figure 1-2 The diagram shows the coffee machine and water chiller connected together by water pipes. Figure 4 This is a schematic diagram of the flow direction of the cooling water circulation circuit of this utility model; Figure 5 This is a schematic diagram of the cooling water circulation circuit of this utility model; Figure 6 for Figure 5 A schematic diagram of the structure shown from another perspective; Figure 7 This is a schematic diagram showing the water supply pipe fitting of this utility model being inserted into the first connector; Figure 8 for Figure 7 A schematic diagram of the structure shown from one perspective of orthographic projection; Figure 9 for Figure 8 Sectional view along axis AA; Figure 10 for Figure 9 BB-direction sectional view; Figure 11 for Figure 7 A schematic diagram showing the water supply pipe fitting detached from the first joint; Figure 12 This is a schematic diagram of the water intake pipe fitting of this utility model; Figure 13 This is an exploded view of the structure of the cold water container of this utility model; Figure 14 This is a schematic diagram of the rotating frame of this utility model in the working position; Figure 15 This is a schematic diagram of the rotating frame of this utility model rotating away from the working position; Figure 16 This is a schematic diagram of the funnel of this utility model from one perspective of orthographic projection. Figure 17 for Figure 16 CC-direction sectional view; Figure 18 for Figure 16 DD section view; Figure 19 This is a schematic diagram showing the cooperation relationship between the rocker arm and the push rod of this utility model; Figure 20 for Figure 19 A cross-sectional structural diagram of the structure shown. Explanation of the labels in the diagram: 100 coffee machine 110 Body, 111 First water pipe, 112 Second water pipe, 113 Third position switch, 114 Push rod, 115 Power unit, 116 Body support. 120 Funnel, 121 Opening, 122 Coffee outlet, 123 Outer wall, 124 Inner wall, 125 Interlayer cavity, 126 Inlet, 127 Outlet, 128 Groove 130 Second connector, 131 Water inlet, 132 Water outlet, 133 Second position switch 140 filter screen, 150 valve plug, 151 rocker arm; 160 Rotating frame, 161 First sealing tube, 162 Second sealing tube, 163 Rib, 164 Pin; 200 chiller 210 Cold water container, 211 Water supply port, 212 Water return port, 213 Heat-conducting tank, 214 Base, 215 Outer cylinder 220 First connector, 221 Water supply interface, 222 Water return interface, 223 First position switch, 224 First contact. 230 compressor, 240 evaporator coil, 250 condensing coil; 300 water supply pipe fittings, 310 water supply pipe, 320 return water pipe, 330 first finger section; 410 First water pump, 420 Second water pump; 500 water intake pipe fittings. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this utility model are intended to cover non-exclusive inclusion, such as a method or product that includes a series of technical features, not limited to those technical features explicitly listed, but also including other technical features that may be included in the method or product but not explicitly listed.

[0035] In the description of this utility model, it should be understood that the technical features defined by terms such as "first," "second," and "third," which have a sequential concept, are only used to clearly describe the defined technical features and to clearly distinguish the defined technical features from other technical features, and do not represent that they are named in this way in actual implementation. Therefore, they should not be construed as limitations on this utility model.

[0036] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings.

[0037] Figure 16-18 A coffee extraction funnel is shown. In this application, extraction refers to the process of using water to extract coffee grounds to obtain a coffee beverage; the extracted coffee grounds become grounds. Therefore, coffee grounds and grounds are usually placed in a filter, and the funnel is used to guide the coffee beverage out to participate in the coffee extraction process, hence the name "coffee extraction funnel." In this application, the funnel can also be used to cool the coffee beverage into a cold drink as needed.

[0038] Therefore, the coffee extraction funnel 120 is funnel-shaped with a larger radial profile at the upper end than at the lower end, having an opening 121 at the upper end and a coffee outlet 122 at the lower end. An inner cavity 125 is defined by an outer wall 123 and an inner wall 124. An inlet 126 and an outlet 127 communicating with the inner cavity 125 are provided on the outer wall 123, and the inner wall 124 is made of a heat-conducting material. Accordingly, when cooling the coffee beverage, cold water is introduced into the inner cavity through the inlet and flows out through the outlet. The heat conductivity of the inner wall cools the coffee beverage in the funnel to the desired temperature, resulting in a chilled drink. During the cooling process, the coffee outlet is closed, allowing the coffee beverage to remain in the funnel. This allows for sufficient heat exchange between the inner wall and the cold water in the inner cavity, cooling it to the desired temperature before opening the coffee outlet to allow the chilled coffee beverage to flow out, thereby increasing cooling efficiency and shortening the beverage's outflow time. When cold drinks are not needed, there is no need to add cold water to the inner cavity of the funnel, thus maintaining the extracted coffee beverage at its original temperature. This gives the funnel the dual purpose of dispensing both cold and hot drinks. Hot drinks, in contrast to cold drinks, are coffee beverages that have not been cooled by cold water and retain their original temperature after extraction. For example, the original temperature of the extracted coffee beverage can be either room temperature or high temperature. If the original temperature is room temperature and it is extracted with room temperature water, the temperature is typically 25±15℃. If the original temperature is high temperature and it is extracted with high temperature water (such as 92℃), the temperature is typically 80±5℃. The temperature of cold water is generally 0-4℃; the temperature of cold coffee beverages is 4-10℃.

[0039] In the illustrated structure, both the outer wall 123 and the inner wall 124 are made of stainless steel, and their upper ends are welded and sealed together, as are their lower ends. This ensures the airtightness of the interlayer cavity.

[0040] Furthermore, the outer wall 123 has a groove 128 recessed into the inner cavity 125 of the interlayer, with the inlet 126 and outlet 127 located on opposite sides of the groove 128. Accordingly, the groove separates the inlet and outlet, increasing the flow path of cold water within the interlayer cavity, allowing for sufficient heat exchange with the extracted coffee beverage, and accelerating the cooling speed of the coffee beverage.

[0041] Furthermore, the groove 128 extends from the upper end of the outer wall 123 to the lower end of the outer wall. This ensures the regularity of the funnel and increases the flow path of cold water in the inner cavity of the interlayer.

[0042] Furthermore, the outer wall 123 contacts the inner wall 124 at the groove 128. Accordingly, the inlet and outlet are completely isolated at the groove, forcing the cold water entering the interlayer cavity from the inlet to flow through a longer path before flowing out from the outlet.

[0043] Figure 1-3 A cold beverage coffee machine is shown, which is equipped with Figure 16-18The shown is a coffee extraction funnel 120.

[0044] The cold beverage coffee machine includes a coffee machine 100, a water chiller 200, a water supply pipe 310, a water return pipe 320, and a water pump.

[0045] The coffee machine 100 is equipped with a coffee extraction funnel 120 on the body 110, a water inlet 131 connected to the water inlet 126 via a water pipe, and a water outlet 132 connected to the water outlet 127 via a water pipe. A filter screen 140 for holding coffee powder is placed inside the funnel 120. The filter screen 140 can be removed from the funnel for easy cleaning. A valve plug 150 is provided at the coffee outlet 122 for opening or closing the coffee outlet.

[0046] The chiller 200 is equipped with a chilled water container 210, a water supply interface 221 and a water return interface 222. The chilled water container 210 has a water supply port 211 and a water return port 212. The water supply interface 221 is connected to the water supply port 211 through a water pipe, and the water return interface 222 is connected to the water return port 212 through a water pipe.

[0047] The water supply pipe 310 is detachably connected to the water supply interface 221 and the water inlet interface 131, and the return water pipe 320 is detachably connected to the return water interface 222 and the water outlet interface 132, forming a cooling water circulation loop between the cold water container 210 and the inner cavity 125.

[0048] A water pump is arranged in the cooling water circulation loop to transport cold water in the cold water container 210 to the inner cavity 125 of the jacket and then back from the inner cavity 125 to the cold water container 210.

[0049] When the water supply pipe 310 and return pipe 320 connect the coffee machine 100 and the chiller 200, the coffee machine extracts coffee, and the chiller provides cold water. A water pump circulates the cold water in a cooling water loop, cooling the coffee in the funnel to the desired temperature before it flows out. When the coffee machine and chiller are not connected by the water supply and return pipes, they operate independently. The coffee extracted by the coffee machine flows directly from the funnel without cooling, maintaining its original temperature. The chiller is either idle or used to provide cold water. Therefore, the coffee machine has both cold and hot beverage extraction functions, increasing its versatility. The chiller can operate independently or connected to the coffee machine, offering flexible operating modes.

[0050] like Figure 2 , Figure 11 As shown, the water supply interface 221 and the return water interface 222 are located side by side in the first connector 220. Figure 1 As shown, the inlet port 131 and the outlet port 132 are located side by side on the second connector 130. Figure 1-2 , Figure 7-9 , Figure 11As shown, the water supply pipe 310 and the return pipe 320 are arranged side by side into a single water supply fitting 300. Accordingly, the water supply pipe and the return pipe can be connected by connecting the water supply fitting 300 to the first connector 220 and the second connector 130, which increases the convenience of the connection.

[0051] like Figure 12 As shown, the cold beverage coffee machine includes a water inlet fitting 500 for connecting to a water supply interface. When the chiller is operating independently, the water inlet fitting is connected to the water supply interface to output cold water.

[0052] A first position switch 223 is provided at the water supply interface 221 and the return interface 222, and a second position switch 133 is provided at the water inlet interface 131 and the water outlet interface 132. When the water supply pipe 310 and the return pipe 320 are connected in place, the first position switch 223 and the second position switch 133 are triggered, allowing the water pump to start. This ensures the reliability of operation, especially preventing cold water leakage from the connection points. For example, Figure 7-11 As shown, a first position switch 223 is mounted on a first connector 220. The first position switch 223 has a first contact 224 protruding from the hole in the first connector 220. Correspondingly, the first end of the water supply pipe 300 has a first finger-like portion 330. When the first end of the water supply pipe 300 is inserted into the first connector 220, the first finger-like portion 330 triggers the first contact 224. Similarly, a second position switch is mounted on a second connector. The second position switch has a second contact protruding from the hole in the second connector. Correspondingly, the second end of the water supply pipe has a second finger-like portion. When the second end of the water supply pipe is inserted into the second connector, the second finger-like portion triggers the second contact.

[0053] like Figure 6 , Figure 13 As shown, the water supply port 211 is located at the lower position of the cold water container 210, and the water return port 212 is located at the higher position of the cold water container 210. The water supply port 211 is lower than the water return port 212. Therefore, the water return port can be made higher than the water surface to reduce the resistance to water return.

[0054] like Figure 1-3 , Figure 14-15As shown, the cold beverage coffee machine includes a rotating frame 160 rotatably mounted on the body 110. This rotation is achieved by the rotating frame 160 being connected to the body 110 via a pin 164. A first water pipe 111 connecting to the water inlet 131 and a second water pipe 112 connecting to the water outlet 132 are fixed on the body 110. The rotating frame 160 is equipped with a first sealing pipe 161 and a second sealing pipe 162. When the rotating frame 160 rotates to the working position, the first water pipe 111 connects to the first sealing pipe 161, and the second water pipe 112 connects to the second sealing pipe 162. The water inlet 126 is connected to the water inlet 131 via the first sealing pipe 161 and the first water pipe 111. The water outlet 127 is connected to the water outlet 132 via the second sealing pipe 162 and the second water pipe 112. When the rotating frame 160 rotates away from the working position, the first water pipe 111 disengages from the first sealing pipe 161, and the second water pipe 112 disengages from the second sealing pipe 162. Therefore, the funnel can be rotated out of the machine body by rotating the rotating frame, and the cold water circuit can be sealed when the rotating frame is rotated to the working position.

[0055] Furthermore, the funnel 120 is placed on and can be removed from the rotating frame 160. The rotating frame, as shown, has a receiving cavity whose shape is adapted to the shape of the funnel. When the funnel 120 is placed on the rotating frame 160, the inlet 126 is connected to the first sealing tube 161, and the outlet 127 is connected to the second sealing tube 162. When the funnel 120 is removed from the rotating frame 160, the inlet 126 is disconnected from the first sealing tube 161, and the outlet 127 is disconnected from the second sealing tube 162. Removing the funnel facilitates cleaning. The first and second sealing tubes ensure both ease of removal from the rotating frame and a tight seal when the funnel is placed back into the rotating frame.

[0056] like Figure 14-15 As shown, the rotating frame 160 and the funnel 120 are equipped with a positioning guide structure for guiding and positioning the funnel onto the rotating frame. This positioning guide structure can guide the funnel into and out of the rotating frame, and also position the funnel after it is placed on the rotating frame, preventing leakage at the inlet and outlet caused by the funnel's movement. Specifically, the positioning guide structure includes a groove 128 on the outer wall 123 of the funnel and a rib 163 on the rotating frame 160. When the funnel 120 is placed on the rotating frame 160, the rib 163 is located within the groove 128. Therefore, the groove serves the dual purpose of separating the inlet and outlet and guiding and positioning, resulting in a compact structure and convenient placement and removal of the funnel.

[0057] The machine body 110 is equipped with a third position switch 113, which is installed on the rear side of the machine body bracket 116. The third position switch 113 has a third contact that passes through the machine body bracket 116 and protrudes from the front side of the machine body bracket 116. When the rotating carriage 160 rotates to the working position, the third position switch 113 is triggered, allowing the coffee machine to be started. This prevents the coffee machine from being started if the rotating carriage has not rotated to the correct position.

[0058] like Figure 4-6 As shown, the water pumps include a first water pump 410 and a second water pump 420. The first water pump 410 is attached to the chiller 200 and connected between the water supply interface 221 and the chilled water container 210. The second water pump 420 is attached to the coffee machine 100 and connected between the second water pipe 112 and the water outlet 132. Accordingly, utilizing the shut-off function of the first water pump (such as a plunger pump), when the first water pump is not running, such as when the chiller is operating alone, the water supply interface can be closed. When chilled water is needed, the first water pump is started, and water is supplied through the water supply interface. The second water pump is located after the water outlet. Therefore, when the first and second water pumps are started to supply water, the second water pump has a suction effect on the water flow before it, thereby reducing the water pressure between the first and second water pumps and preventing water leakage at both ends of the first and second sealing pipes.

[0059] Furthermore, the flow rate of the second water pump 420 is not less than the flow rate of the first water pump 410. This reduces the water pressure generated by the first water pump to zero or negative pressure, thereby ensuring that there is no leakage at both ends of the first and second sealing pipes. Moreover, even if the joint between the two ends of the first and second sealing pipes is not tightly sealed, the suction force of the second water pump will prevent leakage at both ends of the first and second sealing pipes.

[0060] like Figures 19-20 As shown, valve plug 150 is mounted on rocker arm 151, which is oscillatingly mounted on rotating frame 160. The machine body 110 has a oscillating push rod 114, which is driven to oscillate by a power source 115, such as an electromagnet. When rotating frame 160 is in the working position, rocker arm 151 and push rod 114 maintain transmission. The oscillation of push rod 114 causes rocker arm 151 to oscillate, and the oscillation of rocker arm 151 changes the position of valve plug 150 relative to coffee outlet 122, thus opening or closing the coffee outlet. Figure 20 As shown, valve plug 150 moves downward away from coffee outlet 122, opening the coffee outlet. When power 115 causes push rod 114 to swing counterclockwise, the left end of push rod 114 presses down on rocker arm 151, causing rocker arm to swing clockwise. The left end of rocker arm, carrying valve plug 150, moves towards coffee outlet 122 to close the coffee outlet. When the rotating frame 160 rotates away from the working position, rocker arm 151 disengages from push rod 114. This structure, with rocker arm mounted on the rotating frame and push rod mounted on the machine body, maintains the positional relationship between valve plug and coffee outlet even when the rotating frame is rotated.

[0061] like Figure 5 , Figure 13As shown, the chiller 200 includes a compressor 230, an evaporator coil 240, and a condenser coil 250 connected in the refrigerant circuit. The chilled water container 210 includes a heat-conducting barrel 213, a chassis 214, and an outer cylinder 215. The heat-conducting barrel 213 is located on the upper side of the chassis 214, the evaporator coil 240 is located between the heat-conducting barrel 213 and the chassis 214, and the outer cylinder 215 surrounds the chassis 214, the evaporator coil 240, and the heat-conducting barrel 213 for heat insulation. This chiller structure can continuously cool chilled water, maintaining it at the required temperature, and the chilled water container has excellent heat preservation properties, reducing the chiller's energy consumption.

Claims

1. A funnel for extracting coffee, which is funnel-shaped with a larger radial profile at the upper end than at the lower end, has an open end (121) at the upper end and a coffee outlet (122) at the lower end, characterized in that: The interlayer cavity (125) is defined by the outer wall (123) and the inner wall (124). The outer wall (123) has an inlet (126) and an outlet (127) that connect the interlayer cavity. The inner wall (124) is made of heat-conducting material.

2. The funnel according to claim 1, characterized in that: The outer wall (123) and the inner wall (124) are both made of stainless steel and their upper ends are welded and sealed together, and their lower ends are welded and sealed together.

3. The funnel according to claim 1 or 2, characterized in that: The outer wall (123) has a groove (128) that is recessed into the inner cavity (125) of the interlayer, and the inlet (126) and outlet (127) are located on both sides of the groove (128).

4. The funnel according to claim 3, characterized in that: The groove (128) extends from the upper end of the outer wall (123) to the lower end of the outer wall.

5. The funnel according to claim 3, characterized in that: The outer wall (123) contacts the inner wall (124) at the groove (128).

6. A cold drink coffee machine, characterized by: include: A coffee machine (100) is provided on its body (110) with a funnel (120) as described in any of claims 1-5, a water inlet (131) connected to the water inlet (126), and a water outlet (132) connected to the water outlet (127). A filter (140) for holding coffee powder is placed inside the funnel (120), and a valve plug (150) is provided at the coffee outlet (122) for opening or closing the coffee outlet. A chiller (200) is configured with a chilled water container (210), a water supply interface (221) and a water return interface (222). The chilled water container (210) has a water supply port (211) and a water return port (212). The water supply interface (221) is connected to the water supply port (211), and the water return interface (222) is connected to the water return port (212). Water supply pipe (310) and return pipe (320) are provided. Water supply pipe (310) is detachably connected to water supply interface (221) and water inlet interface (131). Return pipe (320) is detachably connected to return interface (222) and water outlet interface (132). A cooling water circulation loop is formed between cold water container (210) and jacket cavity (125). A water pump, which is arranged in the cooling water circulation loop, is used to transport cold water in the cold water container (210) to the inner cavity of the jacket (125) and then back to the cold water container from the inner cavity of the jacket.

7. The cold drink coffee machine according to claim 6, characterized in that: water supply... The interface (221) and the return water interface (222) are located side by side in the first connector (220), the inlet water interface (131) and the outlet water interface (132) are located side by side in the second connector (130), and the water supply pipe (310) and the return water pipe (320) are arranged side by side into a water supply pipe fitting (300).

8. The cold drink coffee machine according to claim 6, characterized in that: The cold drink coffee machine includes a water inlet fitting (500) for connecting to the water supply interface (221).

9. The cold drink coffee machine according to any one of claims 6-8, characterized in that: water supply... A first position switch (223) is provided at the interface (221) and the return water interface (222), and a second position switch (133) is provided at the inlet water interface (131) and the outlet water interface (132). When the water supply pipe (310) and the return water pipe (320) are connected in place, the first position switch (223) and the second position switch (133) are triggered to start the water pump.

10. The cold drink coffee machine according to claim 6, characterized in that: The water supply port (211) is located at the lower position of the cold water container (210), and the water return port (212) is located at the higher position of the cold water container (210). The water supply port (211) is lower than the water return port (212).

11. The cold drink coffee machine according to claim 6, characterized in that: The cold coffee machine includes a rotating frame (160) mounted on the body (110). The body (110) has a first water pipe (111) connected to a water inlet (131) and a second water pipe (112) connected to a water outlet (132) fixed on it. The rotating frame (160) is equipped with a first sealing pipe (161) and a second sealing pipe (162). When the rotating frame (160) is rotated to the working position, the first water pipe (111) connects with the first sealing pipe (161), and the second water pipe (112) connects with the first sealing pipe (132). 2) Connect to the second sealing pipe (162). The inlet (126) is connected to the inlet interface (131) via the first sealing pipe (161) and the first water pipe (111). The outlet (127) is connected to the outlet interface (132) via the second sealing pipe (162) and the second water pipe (112). When the rotating frame (160) moves away from the working position, the first water pipe (111) is disconnected from the first sealing pipe (161) and the second water pipe (112) is disconnected from the second sealing pipe (162).

12. The cold drink coffee machine according to claim 11, characterized in that: The funnel (120) is placed on the rotating frame (160) and can be removed from the rotating frame. When the funnel is placed on the rotating frame, the inlet (126) is connected to the first sealing tube (161) and the outlet (127) is connected to the second sealing tube (162). When the funnel is removed from the rotating frame, the inlet is disconnected from the first sealing tube and the outlet is disconnected from the second sealing tube.

13. The cold beverage coffee machine according to claim 12, characterized in that: The rotating frame (160) and the funnel (120) are equipped with a positioning guide structure for guiding and positioning the funnel to the rotating frame.

14. The cold drink coffee machine according to claim 13, characterized in that: The positioning guide structure includes a groove (128) on the outer wall (123) of the funnel and a rib (163) on the rotating frame (160). When the funnel is placed on the rotating frame, the rib (163) is located in the groove (128).

15. The cold beverage coffee machine according to claim 11, characterized in that: The machine body (110) is equipped with a third position switch (113). When the rotating bracket (160) is rotated to the working position, the third position switch (113) is triggered to start the coffee machine.

16. The cold beverage coffee machine according to any one of claims 11-15, characterized in that: The water pumps include a first water pump (410) and a second water pump (420). The first water pump (410) is attached to the chiller (200) and connected between the water supply interface (221) and the chilled water container (210). The second water pump (420) is attached to the coffee machine (100) and connected between the second water pipe (112) and the water outlet interface (132).

17. The cold beverage coffee machine according to claim 16, characterized in that: The flow rate of the second water pump (420) is not less than the flow rate of the first water pump (410).

18. The cold beverage coffee machine according to any one of claims 11-15, characterized in that: A valve plug (150) is mounted on a rocker arm (151), which is oscillatingly mounted on a rotating frame (160). The machine body (110) is provided with a rocker push rod (114), which is driven to oscillate by a power source (115). When the rotating frame (160) is in the working position, the rocker arm (151) and the push rod (114) maintain transmission. The oscillation of the push rod (114) causes the rocker arm (151) to oscillate. The oscillation of the rocker arm (151) changes the position of the valve plug (150) relative to the coffee outlet (122) to open or close the coffee outlet. When the rotating frame (160) moves away from the working position, the rocker arm (151) and the push rod (114) disengage from transmission.

19. The cold beverage coffee machine according to any one of claims 6-8, characterized in that: The chiller (200) includes a compressor (230), an evaporator coil (240) and a condenser coil (250) connected in the refrigerant circuit. The chilled water container (210) includes a heat-conducting barrel (213), a chassis (214) and an outer cylinder (215). The heat-conducting barrel (213) is located on the upper side of the chassis (214), the evaporator coil (240) is located between the heat-conducting barrel (213) and the chassis (214), and the outer cylinder (215) surrounds the chassis (214), the evaporator coil (240) and the heat-conducting barrel (213) for heat insulation.

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