CN218156377U

CN218156377U - Water level detection device and coffee machine

Info

Publication number: CN218156377U
Application number: CN202222134482.2U
Authority: CN
Inventors: 陈学军; 马龙; 熊艳
Original assignee: Zhuhai Hengqin Xinrun Intelligent Manufacturing Co ltd
Current assignee: Zhuhai Hengqin Xinrun Intelligent Manufacturing Co ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2022-12-27
Anticipated expiration: 2032-08-12

Abstract

The utility model discloses a water level detection device and a coffee machine, wherein the water level detection device comprises a shell, a water tank and a water level detection component arranged in the shell; the bottom of the water tank is provided with a water outlet; the water level detection assembly comprises a first communication pipe and a water level sensor arranged at the first communication pipe; the first end of the first communicating pipe is communicated with the water outlet, the second end of the first communicating pipe is higher than the maximum liquid level of the water tank, and the first communicating pipe is communicated with the external atmospheric pressure. The technical scheme that this water level detection device and coffee machine provided has simple structure, and convenient to use's characteristics can the water level condition of real-time detection water tank, and the state change of water tank can not lead to this water level detection device to detect inefficacy, and the water level detection subassembly is hidden and is formed hidden structure in the casing, and the appearance is pleasing to the eye.

Description

Water level detection device and coffee machine

Technical Field

The utility model belongs to the technical field of make equipment, concretely relates to water level detection device and coffee machine.

Background

Among the prior art, the coffee machine generally all is provided with the water tank device, in order to let the more audio-visual water level of judging the water tank of consumer be in low water level state, or when lacking water state, the suggestion consumer need add water to the water tank, and the water tank generally is provided with the water level detection structure and is used for detecting the water level.

At present, many coffee machines on the market adopt the mode of the built-in magnetic levitation induction water level of water tank, however, this kind of mode has following problem: the closed magnetic suspension is arranged in the water tank, and magnetic suspension water leakage induction failure is easily caused if the magnetic suspension sealing performance is poor, and the water tank has a complex internal structure, is not easy to clean and is easy to store dirt; in addition, some coffee machines in the market adopt a mode that a flow meter is arranged inside, and the specific principle is as follows: when no water exists in the water tank, the flowmeter detects a water-free signal, and the machine prompts an alarm to alarm for water shortage. However, this method has the following problems: the structure can only detect the water-free condition of the water tank, but cannot detect a low water level or a plurality of water levels, and the mode has limitation; in addition, there are coffee machines on the market to adopt a plurality of sheetmetals to set up at water tank outer wall or water tank inner wall, and the concrete principle is: the metal sheets are arranged at a certain interval along the height direction of the water tank, and the detection chip is used for detecting potential signals sensed by the metal sheets so as to obtain the liquid level of liquid in the water tank. However, the structure of the mode is limited, and the detection device can only be arranged on the outer wall or the inner wall of the water tank, so that the state change of the water tank can influence the electric connection state of the metal sheet and the detection chip, and the detection is invalid.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a water level detection device, this water level detection device simple structure, the water level condition that can the real-time detection water tank, and the change of state of water tank can not lead to this water level detection device to detect inefficacy yet.

The technical scheme for achieving the purpose comprises the following steps.

A water level detection device comprises a shell, a water tank and a water level detection assembly arranged in the shell;

a water outlet is formed in the bottom of the water tank; the water level detection assembly comprises a first communication pipe and a water level sensor arranged at the first communication pipe; the first end of the first communicating pipe is communicated with the water outlet, the height of the second end of the first communicating pipe is higher than the maximum liquid level of the water tank, and the first communicating pipe is communicated with the external atmospheric pressure.

In some embodiments, the water level sensor includes a circuit board, a first electrode and a second electrode, the first electrode and the second electrode are both electrically connected to the circuit board, the first electrode and the second electrode are both disposed on the pipe wall of the first communication pipe, and the first electrode is disposed below the second electrode.

In some embodiments, the second electrode is provided in plurality, and each second electrode is arranged at intervals on the pipe wall of the first communication pipe along the axial direction of the first communication pipe; and the height of the second electrode positioned at the lowest end is consistent with the minimum liquid level height of the water tank along the axial direction of the first communicating pipe.

In some embodiments, the tube wall of the first communicating tube is provided with a first through hole and a second through hole, the first electrode seal is arranged through the first through hole, and the second electrode seal is arranged through the second through hole.

In some embodiments, an air valve is disposed on the housing, and the second end of the first communication pipe is connected to the air valve and communicates with the outside atmosphere through the air valve.

In some embodiments, the housing has a receiving groove, and the water tank is detachably received in the receiving groove of the housing.

In some embodiments, a valve is further disposed at the water outlet of the water tank, the water level detection assembly further includes a valve head, the valve head is disposed at the first end of the first communication pipe, the valve head is disposed at a groove bottom of the accommodating groove of the housing, and when the water tank is accommodated in the accommodating groove, the valve head is communicated with the valve.

In some of these embodiments, the valve comprises a first nipple and a moveable member; the first connecting pipe is arranged at the bottom of the water tank and is communicated with the water outlet, the movable piece is movably inserted into the first connecting pipe, and the movable piece is plugged at the water outlet when in a natural state; the valve head comprises a second connecting pipe and a jacking piece, the second connecting pipe is arranged at the bottom of the shell and is communicated with the first communicating pipe, the jacking piece is movably arranged in the second connecting pipe and blocks the pipe orifice of the second connecting pipe in a natural state, when the water tank is accommodated in the accommodating groove, the first connecting pipe is inserted into the second connecting pipe, the jacking piece abuts against the moving piece and drives the moving piece to move upwards, and the jacking piece moves downwards, so that the water outlet of the water tank, the first connecting pipe, the second connecting pipe and the first communicating pipe sequentially form a communicated flow path.

A coffee machine comprises an infusion device, a second communicating pipe, a heating device and the water level detection device; the inlet of the second communicating pipe is communicated with the first communicating pipe, the heating device is arranged on the second communicating pipe, and the outlet of the second communicating pipe is communicated with the soaking device.

In some embodiments, the first communication pipe is in a U-shaped structure, and a height of a connection portion of the first communication pipe and the second communication pipe is lower than a height of the second end of the first communication pipe.

The utility model provides a technical scheme has following advantage and effect:

this water level detection device is through setting up water level detection subassembly in the casing and being located the outside position of water tank, and consequently the state change of water tank can not influence state and the relation of connection between each structure of water level detection subassembly, because water tank and first connecting pipe all make pressure unanimous with atmospheric pressure intercommunication, the liquid level between water tank and the first connecting pipe is flat this moment, and the liquid level that detects first connecting pipe through the water level inductor can obtain the liquid level in the water tank. Therefore, the water level detection device is simple in structure and convenient to use, the water level condition of the water tank can be detected in real time, the state change of the water tank cannot lead to the detection failure of the water level detection device, the water level detection assembly is hidden in the shell to form a hidden structure, and the appearance is attractive.

Drawings

Fig. 1 is a schematic structural diagram of a coffee machine according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a water level detecting device according to an embodiment of the present invention;

FIG. 3 is a schematic view of the structure of the water tank of FIG. 2;

FIG. 4 is a partial structural view of the water level detecting apparatus of FIG. 2;

fig. 5 is a schematic view illustrating an arrangement of the water level sensor of fig. 2 at the first communication pipe.

Description of reference numerals:

100. a coffee machine;

1. a water level detection device; 11. a housing; 111. accommodating a tank; 112. a vent hole; 12. a water tank; 121. a valve; 122. a first adapter tube; 123. a movable member; 124. a first seal ring; 125. a first elastic member; 13. a water level detection assembly; 131. a valve head; 132. a first communication pipe; 133. a water level sensor; 134. a first electrode; 135. a second electrode; 136. a second connection pipe; 137. a jacking piece; 138. a second seal ring; 139. a second elastic member; 2. a soaking device; 3. a second communicating pipe; 4. a water pump; 5. and (4) a heating device.

Detailed Description

In order to facilitate an understanding of the invention, specific embodiments thereof will be described in more detail below with reference to the accompanying drawings.

As used herein, unless otherwise specified or defined, "first, \ 8230," is used merely to distinguish between names, and does not denote a particular quantity or order.

As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items, unless specified or otherwise defined.

It should be noted that "fixed" and "connected" in this document may be directly fixed or connected to one element or may be indirectly fixed or connected to one element.

The utility model provides a water level detection device 1, as shown in fig. 2 to 5, this water level detection device 1 includes casing 11, water tank 12 and sets up the water level detection subassembly 13 in casing 11.

A water outlet is arranged at the bottom of the water tank 12. The water level detecting assembly 13 includes a first communicating pipe 132 and a water level sensor 133 disposed at the first communicating pipe 132; the first end of the first communication pipe 132 is communicated with the water outlet, the height of the second end of the first communication pipe 132 is higher than the maximum liquid level of the water tank 12, and the first communication pipe 132 is communicated with the external atmospheric pressure, it should be noted that the maximum liquid level of the water tank 12 refers to the height of the maximum water storage preset in the water tank 12, and the water tank 12 may be a movable structure or a fixed structure, which is not limited herein. Specifically, since the water tank 12 and the first communication pipe 132 are both communicated with the atmospheric pressure so that the pressure is the same, the liquid level between the water tank 12 and the first communication pipe 132 is the same, that is, the liquid level in the water tank 12 is the same as the liquid level in the first communication pipe 132, and the liquid level in the water tank 12 can be obtained by detecting the liquid level in the first communication pipe 132 through the water level sensor 133. In addition, the water level detecting assembly 13 is disposed at an external position of the water tank 12, so that the state and connection relationship between the structures of the water level detecting assembly 13 are not affected by the state change of the water tank 12.

In summary, the water level detecting device 1 is disposed at the position outside the water tank 12 and the water level detecting assembly 13 is disposed in the housing 11, so that the state change of the water tank 12 does not affect the state and connection relationship between the structures of the water level detecting assembly 13, and since the water tank 12 and the first communicating pipe 132 are both communicated with the atmospheric pressure to make the pressure consistent, the liquid level between the water tank 12 and the first communicating pipe 132 is equal, and the liquid level in the water tank 12 can be obtained by detecting the liquid level of the first communicating pipe 132 through the water level sensor 133. Therefore, the water level detection device 1 is simple in structure and convenient to use, can detect the water level condition of the water tank 12 in real time, the state change of the water tank 12 cannot cause the detection failure of the water level detection device 1, the water level detection assembly 13 is hidden in the shell 11 to form a hidden structure, and the appearance is attractive.

In some embodiments, as shown in fig. 5, the water level sensor 133 includes a circuit board, a first electrode 134 and a second electrode 135, the first electrode 134 and the second electrode 135 are electrically connected to the circuit board, the first electrode 134 and the second electrode 135 are disposed on the wall of the first communication pipe 132, and the first electrode 134 is disposed below the second electrode 135. It can be understood that when the water level is higher than the second electrode 135, the second electrode 135 soaked by the water and the first electrode 134 form a loop and are transmitted to the circuit board, and when the water level is lower than the second electrode 135, the loop formed by the second electrode 135 and the first electrode 134 is accordingly disconnected, so that by forming the loop, the liquid level in the first communication pipe 132 can be obtained, and thus the liquid level of the water tank 12 can be indirectly obtained.

In some embodiments, the second electrode 135 is provided in a plurality, and each of the second electrodes 135 is disposed at intervals on the tube wall of the first communication tube 132 along the axial direction of the first communication tube 132. Since the plurality of second electrodes 135 are disposed along the axial direction of the first communication pipe 132, the liquid level at any height position of the first communication pipe 132 can be detected by the water level sensor 133. Along the axial direction of first intercommunication pipe 132, be located the least significant the height of second electrode 135 with the water tank 12 minimum liquid level height is unanimous, through the cooperation between each second electrode 135, can detect a plurality of water levels between water tank 12 minimum water level and highest water level and the minimum water level, effectively avoids the condition that the water level at low liquid level position can not detect. Further, the height of the second electrode 135 positioned at the uppermost end coincides with the maximum liquid level height of the water tank 12, and thus it is possible to detect the uppermost water level, the lowermost water level, and a plurality of water levels between the uppermost water level and the lowermost water level of the water tank 12.

In some embodiments, as shown in fig. 5, the tube wall of the first communication tube 132 is provided with a first through hole and a second through hole, the first electrode 134 is sealingly disposed through the first through hole, and the second electrode 135 is sealingly disposed through the second through hole, so that the first electrode 134 and the second electrode 135 can both contact with water in the first communication tube 132 and be electrically connected with a circuit board outside the first communication tube 132. In addition, the first electrode 134 is disposed in a sealing manner with respect to the hole wall of the first through hole of the first communication pipe 132, and the second electrode 135 is disposed in a sealing manner with respect to the hole wall of the second through hole of the first communication pipe 132, so as to effectively prevent water from flowing out from the gap between the hole wall of the first communication pipe 132 and the first electrode 134, the second electrode 135.

In some embodiments, as shown in fig. 2, the housing 11 is opened with a vent hole 112 communicating with the outside atmosphere, and the second end of the first communication pipe 132 is disposed to communicate with the vent hole 112. It can be understood that the atmospheric pressure in the first communication pipe 132 can be always kept the same as the atmospheric pressure in the water tank 12 by the vent hole 112 to make the liquid level between the water tank 12 and the first communication pipe 132 even, wherein the vent hole 112 may be a micro-porous structure to enable smooth air flow, but water is difficult to flow out from the vent hole 112. Or, in other embodiments, an air valve is disposed on the housing 11, and the second end of the first communication pipe 132 is connected to the air valve and is communicated with the outside atmosphere through the air valve. It will be appreciated that the air valve is arranged so that air can pass through the air valve but water cannot escape from the air valve, thereby avoiding water in the first communication pipe 132 from escaping.

In some embodiments, the housing 11 has a receiving groove 111, and the water tank 12 is detachably received in the receiving groove 111 of the housing 11. According to the water level detection device 1, the water level detection assembly 13 is arranged at the position, outside the water tank 12, of the shell 11, and the water tank 12 is moved relative to the shell 11 to be taken and placed, so that the states and the connection relations among all structures of the water level detection assembly 13 are not influenced, the water tank 12 can be of a movable structure, and the water level detection device 1 cannot be failed to detect in the frequent taking and placing process. Of course, in other embodiments, the water tank 12 may be fixedly disposed in the housing 11, and is not limited herein.

In some embodiments, a valve 121 is further disposed at the water outlet of the water tank 12, the water level detecting assembly 13 further includes a valve head 131, the valve head 131 is disposed at a first end of the first communicating pipe 132, the valve head 131 is disposed at a groove bottom of the accommodating groove 111 of the housing 11, and when the water tank 12 is accommodated in the accommodating groove 111, the valve head 131 is communicated with the valve 121. It can be understood that, the accommodating groove 111 of the housing 11 is placed in the water tank 12, and the water tank 12 and the first communicating pipe 132 are communicated with each other through the matching of the valve 121 and the valve head 131, and the pressure is consistent due to the fact that the water tank 12 and the first communicating pipe 132 are communicated with the atmosphere, and the liquid level between the water tank 12 and the first communicating pipe 132 is equal to each other at this time, the liquid level in the water tank 12 can be obtained by detecting the liquid level of the first communicating pipe 132 through the water level sensor 133, and when the water tank 12 is taken out of the housing 11, the self-locking function of the valve 121 is performed to form a closed state, so as to prevent water from flowing out from the water outlet, and therefore the water tank 12 does not affect the state and the connection relationship between the structures of the water level detecting assembly 13 when being taken and placed relative to the housing 11, and does not cause water leakage and backflow.

In some embodiments, as shown in fig. 2 to 4, the valve 121 includes a first nipple 122 and a movable member 123; the first connecting pipe 122 is arranged at the bottom of the water tank 12 and is communicated with the water outlet, the movable member 123 is movably inserted into the first connecting pipe 122, and the movable member 123 is plugged at the water outlet when in a natural state; the valve head 131 includes a second connection pipe 136 and a lifting member 137, the second connection pipe 136 is disposed at a groove bottom of the housing 11 and is communicated with the first connection pipe 132, the lifting member 137 is movably disposed in the second connection pipe 136 and blocks a pipe orifice of the second connection pipe 136 in a natural state, when the water tank 12 is accommodated in the accommodation groove 111, the first connection pipe 122 is inserted into the second connection pipe 136, and the lifting member 137 abuts against the movable member 123 and drives the movable member 123 to move upward, and the lifting member 137 synchronously moves downward, so that the water outlet of the water tank 12, the first connection pipe 122, the second connection pipe 136 and the first connection pipe 132 sequentially form a communicated flow path.

It can be understood that, when the water tank 12 is not placed in the accommodating groove 111 of the housing 11 and water is stored in the water tank 12, the water tank 12 is in a natural state at this time, the movable element 123 blocks the water outlet of the water tank 12, and water cannot flow out from the water outlet of the water tank 12; at the same time, the jacking piece 137 blocks the nozzle of the second connecting pipe 136, even if water exists in the first communicating pipe 132, the water in the first communicating pipe 132 can not flow out from the second connecting pipe 136, and the water in the first communicating pipe 132 is blocked in the pipe by matching with the air valve or the air hole 112 at the second end of the first communicating pipe 132. When the water tank 12 is placed in the accommodating groove 111 of the housing 11, the first connecting pipe 122 is inserted into the second connecting pipe 136, the movable member 123 abuts against the lifting member 137 and drives the movable member 123 to move upward, the water outlet of the water tank 12 is opened in the upward movement process of the movable member 123, at this time, the lifting member 137 moves downward under a relative action and is separated from the second connecting pipe 136, at this time, the water outlet of the water tank 12, the first connecting pipe 122, the second connecting pipe 136 and the first connecting pipe 132 form a communicated flow path, water in the water tank 12 can enter the first connecting pipe 132 through the flow path, when the water tank 12 is taken out, the movable member 123 resets and blocks the water outlet, water cannot flow out from the water outlet of the water tank 12, the lifting member 137 resets and blocks the pipe orifice of the second connecting pipe 136, the flow path is cut off, and water backflow is effectively avoided.

In some embodiments, as shown in fig. 2 to 4, the movable member 123 includes a movable shaft, a first sealing ring 124, and a first elastic member 125; the movable shaft is movably inserted into the first connection pipe 122 through the first elastic member 125, the first sealing ring 124 is sleeved on the movable shaft and is located in the water tank 12, and the first sealing ring 124 abuts against the position of the water tank 12 at the edge of the water outlet when in a sealed state; and/or, the lifting member 137 includes a lifting shaft, a second sealing ring 138 and a second elastic member 139, the second sealing ring 138 is disposed at the top end of the second connection pipe 136, the lifting shaft moves in the second connection pipe 136 through the second elastic member 139 and abuts against the second sealing ring 138 in a natural state, the bottom end of the second connection pipe 136 is communicated with the first connection pipe 132, when the water tank 12 is accommodated in the accommodation groove 111, the first connection pipe 122 is inserted into the second connection pipe 136, and the lifting shaft abuts against the movable shaft and drives the movable shaft and the lifting shaft to move away from each other. It can be understood that the movable element 123 can effectively block the water outlet of the water tank 12 in a natural state through the cooperation of the movable shaft, the first sealing ring 124 and the first elastic element 125, and the lifting element 137 can block the first end of the first connection pipe 132 in a natural state through the cooperation of the lifting shaft, the second sealing ring 138 and the second elastic element 139, and can make the movable shaft and the lifting shaft interact and move away when abutting, so that the water outlet of the water tank 12, the first connection pipe 122, the second connection pipe 136 and the first connection pipe 132 sequentially form a communicated flow path. The first elastic element 125 and the second elastic element 139 may be springs or other elastic members.

The utility model also provides a coffee machine 100, as shown in fig. 1 to 5, the coffee machine 100 comprises an infusion device 2, a second communicating pipe 3, a heating device 5 and the water level detection device 1; the inlet of the second communicating pipe 3 is communicated with the first communicating pipe 132, the heating device 5 is arranged on the second communicating pipe 3, and the outlet of the second communicating pipe 3 is communicated with the soaking device 2. It can be understood that the water tank 12 is filled with water to the maximum liquid level, the water tank 12 is placed in the housing 11, the valve head 131 is communicated with the valve 121, the water enters the first communication pipe 132 from the water tank 12, the first communication pipe 132 is communicated with the atmosphere, and the liquid level in the first communication pipe 132 is flush with the liquid level of the water tank 12 by adopting the principle of a communicator. During the operation of the coffee maker 100, the water in the water tank 12 enters the steeping device 2 from the first communicating pipe 132 through the second communicating pipe 3 for coffee brewing, and during the circulation, the liquid level in the first communicating pipe 132 is always kept at the same level as the liquid level in the water tank 12. When the level of the water tank 12 is below the minimum level of the water tank 12, the water flow is indicated to be at or below the level, and the coffee maker 100 stops operating or is indicated to be ready to operate with water. In summary, the coffee maker 100 is provided with the water level detecting device 1, so that the water level condition of the water tank 12 can be detected in real time, and when the water tank 12 is of a movable structure, the detection failure of the water level detecting device 1 cannot be caused in the process of frequent taking and placing.

In some embodiments, the coffee maker 100 may further include a water pump 4, the water pump 4 is disposed on the second communication pipe 3, and the water pump 4 pumps water to make coffee from the water tank 12 entering the steeping device 2 through the second communication pipe 3 from the first communication pipe 132.

In some embodiments, as shown in fig. 1, the first communicating pipe 132 is a U-shaped structure, and the height of the joint between the first communicating pipe 132 and the second communicating pipe 3 is lower than the height of the second end of the first communicating pipe 132, so that water in the water tank 12 can enter the second communicating pipe 3 from the first communicating pipe 132, the use of power is reduced, and the cost is reduced.

The above embodiments are not intended to be exhaustive list of the present invention, and there may be many other embodiments not listed. Any replacement and improvement made on the basis of not violating the conception of the utility model belong to the protection scope of the utility model.

Claims

1. The water level detection device is characterized by comprising a shell, a water tank and a water level detection assembly arranged in the shell;

2. The water level detecting device as claimed in claim 1, wherein the water level sensor comprises a circuit board, a first electrode and a second electrode, the first electrode and the second electrode are electrically connected to the circuit board, the first electrode and the second electrode are disposed on the wall of the first communicating pipe, and the first electrode is disposed under the second electrode.

3. The water level detecting device according to claim 2, wherein a plurality of second electrodes are provided, and each of the second electrodes is provided at intervals on the pipe wall of the first communication pipe along the axial direction of the first communication pipe; and the height of the second electrode positioned at the lowest end is consistent with the minimum liquid level height of the water tank along the axial direction of the first communicating pipe.

4. The water level detecting device according to claim 2, wherein a first through hole and a second through hole are formed in a tube wall of the first communicating tube, the first electrode is arranged in the first through hole in a sealing manner, and the second electrode is arranged in the second through hole in a sealing manner.

5. The water level detecting apparatus as claimed in claim 1, wherein an air valve is provided on the housing, and a second end of the first communication pipe is connected to the air valve and is communicated with the external atmospheric pressure through the air valve.

6. The water level detecting apparatus as claimed in claim 1, wherein the housing has a receiving groove, and the water tank is detachably received in the receiving groove of the housing.

7. The water level detecting device as claimed in claim 6, wherein a valve is further disposed at the water outlet of the water tank, the water level detecting assembly further includes a valve head, the valve head is disposed at the first end of the first communicating pipe, the valve head is disposed at a groove bottom of the accommodating groove of the housing, and when the water tank is accommodated in the accommodating groove, the valve head is in communication with the valve.

8. The water level detecting apparatus of claim 7, wherein the valve comprises a first connection pipe and a movable member; the first connecting pipe is arranged at the bottom of the water tank and is communicated with the water outlet, the movable piece is movably inserted into the first connecting pipe, and the movable piece is plugged at the water outlet when in a natural state; the valve head comprises a second connecting pipe and a jacking piece, the second connecting pipe is arranged at the groove bottom of the shell and is communicated with the first communicating pipe, the jacking piece is movably arranged in the second connecting pipe and blocks the pipe orifice of the second connecting pipe in a natural state, when the water tank is accommodated in the accommodating groove, the first connecting pipe is inserted into the second connecting pipe, the jacking piece abuts against the moving piece and drives the moving piece to move upwards, and the jacking piece moves downwards, so that the water outlet of the water tank, the first connecting pipe, the second connecting pipe and the first communicating pipe sequentially form a communicated flow path.

9. Coffee machine, characterized in that it comprises an infusion device, a second communicating tube, a heating device and a water level detection device according to any one of claims 1 to 8; the inlet of the second communicating pipe is communicated with the first communicating pipe, the heating device is arranged on the second communicating pipe, and the outlet of the second communicating pipe is communicated with the soaking device.

10. The coffee machine of claim 9, wherein the first communication pipe is U-shaped, and a height of a connection of the first communication pipe and the second communication pipe is lower than a height of the second end of the first communication pipe.