Water dispenser control method, emptying waterway structure and instant heating type water dispenser

Abstract

The invention provides a water dispenser control method, an emptying waterway structure and an instant heating type water dispenser, relates to the technical field of water dispensers, and solves the technical problem that the temperature of a first cup of water of the water dispenser is lower than the temperature set by a user. The method comprises the following steps: acquiring a water taking state of a user; and on the basis of the obtained state that the user finishes taking water, an emptying water path structure is controlled to be opened, so that residual water of a water supply path between the water outlet and the heating body is emptied and flows back into the water tank. Through program control, after a user completes water taking every time, the system automatically starts a water return program, water from the heating body to the water outlet is emptied and flows back to the water tank, when the user takes water next time, the water outlet temperature is directly the temperature set by the user, and the problem that normal-temperature water exists in the front section does not exist.

Description

Technical Field

[0001] The present invention relates to the technical field of water dispensers, and in particular to a water dispenser control method, an emptying water channel structure and an instant hot water dispenser. Background Art

[0002] With the continuous improvement of people's living standards, in order to meet the needs of users to drink water at different temperature ranges instantly, pipeline machines are often used to heat the water. Pipeline machines are also called pipeline drinking machines. The commonly used pipeline machines on the market have the functions of heating, heat preservation and cooling. Pipeline machines are mainly used in conjunction with water purifiers. Pipeline machines have built-in water tanks and heating elements. At present, pipeline machines on the market are roughly divided into two categories: one is to output normal temperature water and water at different temperature ranges (according to user settings such as 45℃, 55℃, 65℃...100℃), but this kind of heating, for example, when the user sets it to 45℃, the heating element only heats the normal temperature water to 45℃, not boiled water and then cooled to 45℃; the other type is a heat exchanger structure in the pipeline machine. If the user sets it to 45℃, the heating element will first boil the water to 100℃, and then cool it to 45℃ through the heat exchanger. This situation is more in line with the user's desired boiled water.

[0003] The applicant has found that the prior art has at least the following technical problems: when the pipeline machine with a heat exchanger structure takes the first cup of water, some water in front of the heating element is still at room temperature, which causes the temperature of the first cup of water to be lower than the temperature set by the user. Summary of the invention

[0004] The object of the present invention is to provide a water dispenser control method, a water channel structure and an instant hot water dispenser to solve the technical problem in the prior art that the temperature of the first cup of water in the water dispenser is lower than the temperature set by the user.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention provides a water dispenser control method, which is implemented by using an emptying water channel structure, and the method comprises the following steps:

[0007] Get the user's water withdrawal status;

[0008] Based on the acquired status that the user has finished taking water, the emptying water path structure is controlled to open so as to empty the residual water in the water supply path between the water outlet and the heating element and return it to the water tank.

[0009] The water dispenser control method of the present invention is controlled by a program. Each time a user takes water, the system automatically starts the water return program to drain the water from the heating element to the water outlet and return it to the water tank. The next time the user takes water, the outlet water temperature is directly the temperature set by the user, and there is no problem of normal temperature water in the front section.

[0010] As a further improvement of the present invention, the user has finished taking water, including:

[0011] Take the 100℃ boiling water state after use;

[0012] Use up all water in other temperature ranges except room temperature and 100℃ boiling water.

[0013] As a further improvement of the present invention, the method of controlling the emptying water path structure to open based on the acquired state that the user has finished taking water, so as to empty and return the residual water in the water supply path between the water outlet and the heating element to the water tank, comprises:

[0014] When the user's water-taking status is obtained as the 100°C boiling water being taken out, the second water pump in the emptying water channel structure is controlled to start;

[0015] Switching the communication port of the two-way solenoid valve D upstream of the heating element A so that the port of the two-way solenoid valve D communicating with the external environment communicates with the first water supply path;

[0016] The communication port of the two-way solenoid valve E upstream of the water outlet is switched so that the first water supply path downstream of the heating element A is connected to the drain return path.

[0017] As a further improvement of the present invention, the method of controlling the emptying water path structure to open based on the acquired state that the user has finished taking water, so as to empty and return the residual water in the water supply path between the water outlet and the heating element to the water tank, comprises:

[0018] When the user's water-taking status is obtained, that is, the water of other temperature ranges except normal temperature and 100°C boiling water is taken out, the second water pump in the emptying water path structure is controlled to start;

[0019] Switch the communication port of the two-way solenoid valve C upstream of the heating element B so that the port of the two-way solenoid valve C communicating with the external environment is communicated with the second water supply path;

[0020] The communication port of the two-way solenoid valve B upstream of the water outlet is switched so that the second water supply path downstream of the heating element B is connected to the drain return path.

[0021] The present invention provides an emptying water channel structure for executing the method.

[0022] As a further improvement of the present invention, it includes an emptying return path, a two-way solenoid valve C, a two-way solenoid valve B, a two-way solenoid valve D, a two-way solenoid valve E and a second water pump; wherein:

[0023] One end of the emptying return path is connected to the water tank of the water dispenser, and the other end is connected to the first water supply path and the second water supply path of the water dispenser respectively;

[0024] The two-way solenoid valve C is installed in the second water supply path and is located upstream of the heating element B in the water dispenser;

[0025] The two-way solenoid valve D is installed in the first water supply path and is located upstream of the heating element A in the water dispenser;

[0026] The two-way solenoid valve B is installed at the connection between the emptying return path and the second water supply path;

[0027] The two-way solenoid valve E is installed at the connection between the emptying return path and the first water supply path;

[0028] The second water pump is installed in the exhaust return path.

[0029] As a further improvement of the present invention, one port of the two-way solenoid valve D is connected to an air intake pipe.

[0030] As a further improvement of the present invention, one port of the two-way solenoid valve C is connected to an air intake pipe.

[0031] As a further improvement of the present invention, the air inlet pipe is provided with an openable and closable dustproof rubber plug.

[0032] The instant hot water dispenser provided by the present invention comprises the above-mentioned emptying water channel structure.

[0033] The instant hot water dispenser of the present invention adds a water pump and three two-way solenoid valves through the newly designed pipeline machine emptying water path structure. Through program control, after each user completes taking water, the system automatically starts the water return program to empty the water from the heating element to the water outlet and return it to the water tank. The next time the user takes water, the outlet water temperature is directly the temperature set by the user, and there is no room temperature water in the front section. Therefore, when the user takes water, there is no room temperature water at the front end of the first cup of water, and the outlet water temperature is directly the temperature set by the user, so that it can achieve real instant hot boiled water.

[0034] The water flow route of the instant hot water dispenser of the present invention is:

[0035] When the user takes water at room temperature:

[0036] The purified water passes through the water inlet solenoid valve-->water tank-->first water pump-->check valve-->two-way solenoid valve D-->heating element A-->two-way solenoid valve A-->two-way solenoid valve E-->water outlet (heating element A is not working at this time).

[0037] When the user takes 100℃ boiling water:

[0038] The purified water passes through the water inlet solenoid valve-->water tank-->first water pump-->check valve-->two-way solenoid valve D-->heating element A-->two-way solenoid valve A-->two-way solenoid valve E-->water outlet (heating element A is working at this time, but when taking the first cup of water, the water in front of the heating element, i.e., heating element A-->water outlet, will not be boiled and will be room temperature water).

[0039] When the user takes water at other temperature ranges except room temperature and 100℃ boiling water:

[0040] The purified water passes through the water inlet solenoid valve-->water tank-->water pump 1-->check valve-->two-way solenoid valve D-->heating element A-->two-way solenoid valve A-->heat exchanger outer tube water inlet-->heat exchanger-->heat exchanger outer tube water outlet-->two-way solenoid valve C-->heating element B-->heat exchanger inner tube water inlet-->heat exchanger-->heat exchanger inner tube water outlet-->two-way solenoid valve B-->water outlet (at this time, heating element A is not working, and heating element B is working to boil the water. The water in the inner tube is hot water, and the water in the outer tube is cold water. The water in the inner tube is cooled to the temperature set by the user through the water in the outer tube. However, when taking the first cup of water, the water in front of heating element B, i.e., arrow 7-->arrow 8-->water outlet, is room temperature water, which cannot reach the water temperature set by heat).

[0041] It can be seen from the above water flow route that no matter whether the user takes boiled water or water of other temperature ranges, when taking the first cup of water, there will be a section of water temperature at room temperature.

[0042] To solve this problem, the opening and closing of the emptying water channel structure is controlled by a program, so that the first cup of water meets the user's temperature requirements. The specific control working principle is described as follows:

[0043] After the user has taken 100℃ boiling water:

[0044] The system automatically starts the water return program, that is, controls the second water pump to start, switches the connecting ports of the two-way solenoid valve D and the two-way solenoid valve E, makes the two-way solenoid valve E and the emptying return path in a connected state, connects one port of the two-way solenoid valve D to the external environment, that is, connects to the atmosphere, and under the suction of the second water pump, the water between the heating element A--> two-way solenoid valve E can flow to the emptying return path--> the second water pump--> the water tank after passing through the two-way solenoid valve E. After the water return time set by the system, the second water pump stops working, the two-way solenoid valve E is reset, and the two-way solenoid valve D is reset. (Note: The air intake pipe at the arrow 11 in the figure is for the second water pump to take in air when it is working to avoid the formation of negative pressure, and a dust-proof rubber plug is provided at the front end). Finally, through this system design, there is no water in the heating element A--> two-way solenoid valve A--> two-way solenoid valve E--> water outlet. The next time the user takes water, the first water pump starts working, the water enters the heating element A and is heated, and then goes to the water outlet, and there is no unboiled water.

[0045] When the user has taken water from other temperature ranges except room temperature and 100℃ boiling water:

[0046] The system automatically starts the water return program, that is, the second water pump starts, switches the connecting ports of two-way solenoid valve B and two-way solenoid valve C, makes two-way solenoid valve B connected to the emptying return path, connects one port of two-way solenoid valve C to the external environment, that is, to the atmosphere, and under the suction of the second water pump, the water between heating element B--> heat exchanger inner tube water inlet--> heat exchanger inner tube--> heat exchanger inner tube water outlet--> two-way solenoid valve B can flow to the emptying return path--> second water pump--> water tank after passing through two-way solenoid valve B. After the water return time set by the system is reached, the second water pump stops working, two-way solenoid valve B is reset, and two-way solenoid valve C is reset. (Note: The air inlet pipe at arrow 10 in the figure is for air intake when the second water pump is working to avoid the formation of negative pressure. At the same time, a dust-proof rubber plug is provided at the front end). Finally, through this system design, there will be no room temperature water from heating element B--> two-way solenoid valve B--> water outlet. The next time the user takes water, the first water pump starts working, and the water enters the heating element B to be heated, passes through the heat exchanger, and then reaches the water outlet. There is no unboiled water. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0048] Figure 1 It is a system composition diagram of the instant hot water dispenser of the present invention;

[0049] Figure 2 It is a water flow diagram of the instant hot water dispenser of the present invention when a user takes 100°C hot water;

[0050] Figure 3 This is the emptying and reflux diagram of the instant hot water dispenser of the present invention after the user has taken 100°C boiling water;

[0051] Figure 4 It is a water flow diagram of the instant hot water dispenser of the present invention when the user takes water of other temperature ranges except room temperature and 100°C boiling water;

[0052] Figure 5 It is an emptying and reflux diagram of the instant hot water dispenser of the present invention after the user takes water of other temperature ranges except room temperature and 100°C boiling water;

[0053] Figure 6 It is a control flow chart of the water dispenser control method of the present invention.

[0054] In the figure, 100 is a water inlet solenoid valve; 101 is a water tank; 102 is a first water pump; 103 is a check valve; 104 is a two-way solenoid valve D; 105 is a heating element A; 106 is a two-way solenoid valve A; 107 is a two-way solenoid valve E; 108 is a water outlet; 109 is a temperature sensor; 110 is a two-way solenoid valve B; 111 is an inner pipe water outlet; 112 is an inner pipe water inlet; 113 is a heating element B; 114 is a two-way solenoid valve C; 115 is an outer pipe water outlet; 116 is a heat exchanger; 117 is an outer pipe water inlet; 118 is an air inlet pipe; 119 is a dust plug; 120 is a second water pump; 121 is an exhaust pipe. DETAILED DESCRIPTION

[0055] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0056] The present invention provides a water dispenser control method, which is implemented by using an emptying water channel structure.

[0057] Specifically, Figure 1-Figure 5 As shown, the emptying water circuit structure includes an emptying return circuit, a two-way solenoid valve C114, a two-way solenoid valve B110, a two-way solenoid valve D104, a two-way solenoid valve E107 and a second water pump 120; wherein:

[0058] One end of the emptying return path is connected to the water tank 101 of the water dispenser, and the other end is connected to the first water supply path and the second water supply path of the water dispenser respectively;

[0059] The two-way solenoid valve C114 is installed in the second water supply path and is located upstream of the heating element B113 in the water dispenser;

[0060] The two-way solenoid valve D104 is installed in the first water supply path and is located upstream of the heating element A105 in the water dispenser;

[0061] The two-way solenoid valve B110 is installed at the connection between the drain return path and the second water supply path;

[0062] The two-way solenoid valve E107 is installed at the connection between the drain return path and the first water supply path;

[0063] The second water pump 120 is installed in the exhaust return path.

[0064] like Figure 6 As shown, in this embodiment, the control method of the water dispenser includes the following steps:

[0065] Step S1, obtaining the user's water withdrawal status;

[0066] Among them, the user's water withdrawal status includes:

[0067] Take the 100℃ boiling water state after use;

[0068] Use up all water in other temperature ranges except room temperature and 100℃ boiling water.

[0069] Step S2: based on the acquired state that the user has finished taking water, control the emptying water path structure to open, so as to empty the residual water in the water supply path between the water outlet 108 and the heating element and return it to the water tank 101.

[0070] As a further improvement of the present invention, based on the acquired state that the user has finished taking water, the emptying water path structure is controlled to open, so as to empty and return the residual water in the water supply path between the water outlet 108 and the heating element to the water tank 101, including:

[0071] When the user's water-taking status is obtained as the 100° C. boiled water state being taken out, the second water pump 120 in the emptying water path structure is controlled to start;

[0072] Switch the communication port of the two-way solenoid valve D104 upstream of the heating element A105 so that the port of the two-way solenoid valve D104 communicating with the external environment is connected to the first water supply path;

[0073] The communication port of the two-way solenoid valve E107 upstream of the water outlet 108 is switched so that the first water supply path downstream of the heating element A105 is connected to the drain return path.

[0074] Specifically, after the user takes 100℃ boiling water:

[0075] The system automatically starts the water return program, that is, controls the second water pump 120 to start, switches the connecting ports of the two-way solenoid valve D104 and the two-way solenoid valve E, connects the two-way solenoid valve E107 with the empty return path, connects one port of the two-way solenoid valve D with the external environment, that is, with the atmosphere, and under the suction of the second water pump 120, the water between the heating element A105-->two-way solenoid valve E can flow to the empty return path-->second water pump 120-->water tank 101 after passing the two-way solenoid valve E107. After the water return time set by the system is reached, the second water pump 120 stops working, the two-way solenoid valve E107 is reset, and the two-way solenoid valve D104 is reset. (Note: The air inlet pipe 118 at the arrow 11 in the figure is used for air intake when the second water pump 120 is working to avoid the formation of negative pressure. At the same time, a dust-proof rubber plug 119 is provided at the front end). Finally, through this system design, there will be no water in the heating element A105-->two-way solenoid valve A106-->two-way solenoid valve E107-->water outlet 108. The next time the user takes water, the first water pump 102 starts working, and the water enters the heating element A105 to be heated, and then reaches the water outlet 108. There is no unboiled water.

[0076] As a further improvement of the present invention, based on the acquired state that the user has finished taking water, the emptying water path structure is controlled to open, so as to empty and return the residual water in the water supply path between the water outlet 108 and the heating element to the water tank 101, including:

[0077] When the user has finished taking water, the second water pump 120 in the emptying water path structure is controlled to start.

[0078] Switch the communication port of the two-way solenoid valve C114 upstream of the heating element B113 so that the port of the two-way solenoid valve C114 communicating with the external environment is connected to the second water supply path;

[0079] The communication port of the two-way solenoid valve B110 upstream of the water outlet 108 is switched so that the second water supply path downstream of the heating element B113 is connected to the drain return path.

[0080] Specifically, when the user has taken water from other temperature ranges except room temperature and 100℃ boiling water:

[0081] The system automatically starts the water return procedure, that is, the second water pump 120 starts, switches the connecting ports of the two-way solenoid valve B110 and the two-way solenoid valve C114, makes the two-way solenoid valve B110 and the emptying return path in a connected state, connects one port of the two-way solenoid valve C with the external environment, that is, connects with the atmosphere, and under the suction action of the second water pump 120, the water energy in the section between the heating element B113--> the water inlet 112 of the inner tube of the heat exchanger--> the inner tube of the heat exchanger 116--> the water outlet 111 of the inner tube of the heat exchanger--> the two-way solenoid valve B110 flows to the emptying return path--> the second water pump 120--> the water tank 101 after passing the two-way solenoid valve B110. After the water return time set by the system is reached, the second water pump 120 stops working, the two-way solenoid valve B110 is reset, and the two-way solenoid valve C114 is reset. (Note: The air inlet pipe 118 at the arrow 10 in the figure is used for air intake when the second water pump 120 is working to avoid the formation of negative pressure. At the same time, a dust-proof rubber plug 119 is provided at the front end). Finally, through this system design, there will be no room temperature water in the heating element B113-->two-way solenoid valve B110-->water outlet 108. The next time the user takes water, the first water pump 102 starts working, and the water enters the heating element B113 to be heated, passes through the heat exchanger 116, and then reaches the water outlet 108. There is no unboiled water.

[0082] The water dispenser control method of the present invention is controlled by a program. Each time a user takes water, the system automatically starts the water return program to drain the water from the heating element to the water outlet 108 and return it to the water tank 101. The next time a user takes water, the outlet water temperature is directly the temperature set by the user, and there is no problem of normal temperature water in the front section.

[0083] like Figure 1-Figure 5 As shown, the present invention provides an emptying water channel structure for executing the above-mentioned water dispenser control method.

[0084] Specifically, the emptying water circuit structure of the present invention includes an emptying return circuit, a two-way solenoid valve C114, a two-way solenoid valve B110, a two-way solenoid valve D104, a two-way solenoid valve E107 and a second water pump 120; wherein:

[0085] like Figure 1 As shown, one end of the emptying return path is connected to the water tank 101 of the water dispenser, and the other end is connected to the first water supply path and the second water supply path of the water dispenser respectively;

[0086] The two-way solenoid valve C114 is installed in the second water supply path and is located upstream of the heating element B113 in the water dispenser;

[0087] The two-way solenoid valve D104 is installed in the first water supply path and is located upstream of the heating element A105 in the water dispenser;

[0088] The two-way solenoid valve B110 is installed at the connection between the drain return path and the second water supply path;

[0089] The two-way solenoid valve E107 is installed at the connection between the drain return path and the first water supply path;

[0090] The second water pump 120 is installed in the exhaust return path.

[0091] When using, when the user takes normal temperature water: the water flow route is: Figure 2 As shown, the purified water passes through the water inlet solenoid valve 100-->water tank 101-->first water pump 102-->check valve 103-->two-way solenoid valve D104-->heating element A105-->two-way solenoid valve A106-->two-way solenoid valve E107-->water outlet 108 (heating element A105 is not working at this time).

[0092] When the user takes 100℃ boiling water: the water flow route is: Figure 2 As shown, the purified water passes through the water inlet solenoid valve 100-->water tank 101-->first water pump 102-->check valve 103-->two-way solenoid valve D104-->heating element A105-->two-way solenoid valve A106-->two-way solenoid valve E107-->water outlet 108 (heating element A105 is working at this time, but when taking the first cup of water, the water in front of the heating element, i.e., the heating element A105-->water outlet 108, will not be boiled and will be room temperature water).

[0093] When the user takes water of other temperature ranges except room temperature and 100℃ boiling water: the water flow route is: Figure 4 As shown, the purified water passes through the water inlet solenoid valve 100-->water tank 101-->water pump 1-->check valve 103-->two-way solenoid valve D104-->heating element A105-->two-way solenoid valve A106-->heat exchanger outer tube water inlet 117-->heat exchanger 116-->heat exchanger outer tube water outlet 115-->two-way solenoid valve C-->heating element B113-->heat exchanger inner tube water inlet 112-->heat exchanger 116- ->Water outlet 111 of the inner tube of the heat exchanger-->Two-way solenoid valve B110-->Water outlet 108 (At this time, the heating element A105 is not working, and the heating element B113 is working to boil the water. The water in the inner tube is hot water, and the water in the outer tube is cold water. The water in the inner tube is cooled to the temperature set by the user through the water in the outer tube. However, when taking the first cup of water, the water in front of the heating element B113, i.e., arrow 7-->arrow 8-->water outlet 108, is room temperature water, which does not reach the water temperature set by the heat).

[0094] As an optional implementation of the present invention, an air intake pipe 118 is connected to one port of the two-way solenoid valve D104.

[0095] As an optional implementation of the present invention, an intake pipe 118 is connected to one port of the two-way solenoid valve C114.

[0096] In order to prevent foreign matter such as dust from entering the air intake pipe 118 , in this embodiment, an openable and closable dustproof rubber plug 119 is provided on the air intake pipe 118 .

[0097] In order to prevent the temperature of the first cup of water after taking water from not meeting the standard, when the emptying water channel structure of this embodiment is used, the water flow route is:

[0098] After the user has taken 100℃ boiling water:

[0099] The system automatically starts the water return program, that is, controls the second water pump 120 to start, switches the connecting ports of the two-way solenoid valve D104 and the two-way solenoid valve E, connects the two-way solenoid valve E107 with the empty return path, connects one port of the two-way solenoid valve D with the external environment, that is, with the atmosphere, and under the suction of the second water pump 120, the water between the heating element A105-->two-way solenoid valve E can flow to the empty return path-->second water pump 120-->water tank 101 after passing the two-way solenoid valve E107. After the water return time set by the system is reached, the second water pump 120 stops working, the two-way solenoid valve E107 is reset, and the two-way solenoid valve D104 is reset. (Note: The air inlet pipe 118 at the arrow 11 in the figure is used for air intake when the second water pump 120 is working to avoid the formation of negative pressure. At the same time, a dust-proof rubber plug 119 is provided at the front end). Finally, through this system design, there will be no water in the heating element A105-->two-way solenoid valve A106-->two-way solenoid valve E107-->water outlet 108. The next time the user takes water, the first water pump 102 starts working, and the water enters the heating element A105 to be heated, and then reaches the water outlet 108. There is no unboiled water.

[0100] When the user has taken water from other temperature ranges except room temperature and 100℃ boiling water:

[0101] The system automatically starts the water return procedure, that is, the second water pump 120 starts, switches the connecting ports of the two-way solenoid valve B110 and the two-way solenoid valve C114, makes the two-way solenoid valve B110 and the emptying return path in a connected state, connects one port of the two-way solenoid valve C with the external environment, that is, connects with the atmosphere, and under the suction action of the second water pump 120, the water energy in the section between the heating element B113--> the water inlet 112 of the inner tube of the heat exchanger--> the inner tube of the heat exchanger 116--> the water outlet 111 of the inner tube of the heat exchanger--> the two-way solenoid valve B110 flows to the emptying return path--> the second water pump 120--> the water tank 101 after passing the two-way solenoid valve B110. After the water return time set by the system is reached, the second water pump 120 stops working, the two-way solenoid valve B110 is reset, and the two-way solenoid valve C114 is reset. (Note: The air inlet pipe 118 at the arrow 10 in the figure is used for air intake when the second water pump 120 is working to avoid the formation of negative pressure. At the same time, a dust-proof rubber plug 119 is provided at the front end). Finally, through this system design, there will be no room temperature water in the heating element B113-->two-way solenoid valve B110-->water outlet 108. The next time the user takes water, the first water pump 102 starts working, and the water enters the heating element B113 to be heated, passes through the heat exchanger 116, and then reaches the water outlet 108. There is no unboiled water.

[0102] like Figure 1-Figure 5 As shown, the instant hot water dispenser provided by the present invention includes the above-mentioned emptying water channel structure.

[0103] Furthermore, it also includes a water tank 101, a water inlet solenoid valve 100, an exhaust pipe 121, a first water pump 102, a check valve 103, a heating element A105, a two-way solenoid valve A106, a heating element B113, a heat exchanger 116, a water outlet 108, and a temperature sensor 109.

[0104] The water flow route of the instant hot water dispenser of the present invention is:

[0105] When the user takes water at room temperature:

[0106] The purified water passes through the water inlet solenoid valve 100-->water tank 101-->first water pump 102-->check valve 103-->two-way solenoid valve D104-->heating element A105-->two-way solenoid valve A106-->two-way solenoid valve E107-->water outlet 108 (heating element A105 is not working at this time).

[0107] When the user takes 100℃ boiling water:

[0108] The purified water passes through the water inlet solenoid valve 100-->water tank 101-->first water pump 102-->check valve 103-->two-way solenoid valve D104-->heating element A105-->two-way solenoid valve A106-->two-way solenoid valve E107-->water outlet 108 (heating element A105 is working at this time, but when taking the first cup of water, the water in front of the heating element, i.e., the heating element A105-->water outlet 108, will not be boiled and will be room temperature water).

[0109] When the user takes water at other temperature ranges except room temperature and 100℃ boiling water:

[0110] The purified water passes through the water inlet solenoid valve 100-->water tank 101-->water pump 1-->check valve 103-->two-way solenoid valve D104-->heating element A105-->two-way solenoid valve A106-->heat exchanger outer tube water inlet 117-->heat exchanger 116-->heat exchanger outer tube water outlet 115-->two-way solenoid valve C-->heating element B113-->heat exchanger inner tube water inlet 112-->heat exchanger 116--> The water outlet 111 of the inner tube of the heat exchanger --> two-way solenoid valve B110 --> water outlet 108 (at this time, the heating element A105 is not working, and the heating element B113 is working to boil the water. The water in the inner tube is hot water, and the water in the outer tube is cold water. The water in the inner tube is cooled to the temperature set by the user through the water in the outer tube. However, when taking the first cup of water, the water in front of the heating element B113, i.e., arrow 7 --> arrow 8 --> water outlet 108, is room temperature water, which does not reach the water temperature set by the heat).

[0111] It can be seen from the above water flow route that no matter whether the user takes boiled water or water of other temperature ranges, when taking the first cup of water, there will be a section of water temperature at room temperature.

[0112] To solve this problem, the opening and closing of the emptying water channel structure is controlled by a program, so that the first cup of water meets the user's temperature requirements. The specific control working principle is described as follows:

[0113] After the user has taken 100℃ boiling water:

[0114] The system automatically starts the water return program, that is, controls the second water pump 120 to start, switches the connecting ports of the two-way solenoid valve D104 and the two-way solenoid valve E, connects the two-way solenoid valve E107 with the empty return path, connects one port of the two-way solenoid valve D with the external environment, that is, with the atmosphere, and under the suction of the second water pump 120, the water between the heating element A105-->two-way solenoid valve E can flow to the empty return path-->second water pump 120-->water tank 101 after passing the two-way solenoid valve E107. After the water return time set by the system is reached, the second water pump 120 stops working, the two-way solenoid valve E107 is reset, and the two-way solenoid valve D104 is reset. (Note: The air inlet pipe 118 at the arrow 11 in the figure is used for air intake when the second water pump 120 is working to avoid the formation of negative pressure. At the same time, a dust-proof rubber plug 119 is provided at the front end). Finally, through this system design, there will be no water in the heating element A105-->two-way solenoid valve A106-->two-way solenoid valve E107-->water outlet 108. The next time the user takes water, the first water pump 102 starts working, and the water enters the heating element A105 to be heated, and then reaches the water outlet 108. There is no unboiled water.

[0115] When the user has taken water from other temperature ranges except room temperature and 100℃ boiling water:

[0116] The system automatically starts the water return procedure, that is, the second water pump 120 starts, switches the connecting ports of the two-way solenoid valve B110 and the two-way solenoid valve C114, makes the two-way solenoid valve B110 and the emptying return path in a connected state, connects one port of the two-way solenoid valve C with the external environment, that is, connects with the atmosphere, and under the suction action of the second water pump 120, the water energy in the section between the heating element B113--> the water inlet 112 of the inner tube of the heat exchanger--> the inner tube of the heat exchanger 116--> the water outlet 111 of the inner tube of the heat exchanger--> the two-way solenoid valve B110 flows to the emptying return path--> the second water pump 120--> the water tank 101 after passing the two-way solenoid valve B110. After the water return time set by the system is reached, the second water pump 120 stops working, the two-way solenoid valve B110 is reset, and the two-way solenoid valve C114 is reset. (Note: The air inlet pipe 118 at the arrow 10 in the figure is used for air intake when the second water pump 120 is working to avoid the formation of negative pressure. At the same time, a dust-proof rubber plug 119 is provided at the front end). Finally, through this system design, there will be no room temperature water in the heating element B113-->two-way solenoid valve B110-->water outlet 108. The next time the user takes water, the first water pump 102 starts working, and the water enters the heating element B113 to be heated, passes through the heat exchanger 116, and then reaches the water outlet 108. There is no unboiled water.

[0117] The instant hot water dispenser of the present invention adds a water pump and three two-way solenoid valves through the newly designed pipeline machine's emptying water path structure. Through program control, after each user completes taking water, the system automatically starts the water return program to empty the water from the heating element to the water outlet 108 and return it to the water tank 101. The next time the user takes water, the outlet water temperature is directly the temperature set by the user, and there is no room temperature water in the front section. This means that when the user takes water, there is no room temperature water at the front end of the first cup of water, and the outlet water temperature is directly the temperature set by the user, so that it can achieve true instant hot boiled water.

[0118] First of all, it should be explained here that “inward” refers to the direction toward the center of the accommodating space, and “outward” refers to the direction away from the center of the accommodating space.

[0119] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0120] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0121] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0122] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0123] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0124] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A water dispenser control method, characterized in that: The method is implemented by using a draining waterway structure, and comprises the following steps: Get the user's water withdrawal status; Based on the acquired status that the user has finished taking water, the emptying water path structure is controlled to open so as to empty the residual water in the water supply path between the water outlet and the heating element and return it to the water tank.

2. The method according to claim 1, characterized in that The user has finished taking water status, including: Take the 100℃ boiling water state after use; Use up all water in other temperature ranges except room temperature and 100℃ boiling water.

3. The method according to claim 1, characterized in that The method of controlling the emptying water path structure to open based on the acquired state that the user has finished taking water, so as to empty and return the residual water in the water supply path between the water outlet and the heating element to the water tank, comprises: When the user's water-taking status is obtained as the 100°C boiling water being taken out, the second water pump in the emptying water channel structure is controlled to start; Switching the communication port of the two-way solenoid valve D upstream of the heating element A so that the port of the two-way solenoid valve D communicating with the external environment communicates with the first water supply path; The communication port of the two-way solenoid valve E upstream of the water outlet is switched so that the first water supply path downstream of the heating element A is connected to the drain return path.

4. The method according to claim 1, characterized in that The method of controlling the emptying water path structure to open based on the acquired state that the user has finished taking water, so as to empty and return the residual water in the water supply path between the water outlet and the heating element to the water tank, comprises: When the user's water-taking status is obtained, that is, the water of other temperature ranges except normal temperature and 100°C boiling water is taken out, the second water pump in the emptying water path structure is controlled to start; Switch the communication port of the two-way solenoid valve C upstream of the heating element B so that the port of the two-way solenoid valve C communicating with the external environment is communicated with the second water supply path; The communication port of the two-way solenoid valve B upstream of the water outlet is switched so that the second water supply path downstream of the heating element B is connected to the drain return path.

5. A drain waterway structure, characterized in that: Used to execute the method according to any one of claims 1 to 4.

6. The emptying water channel structure according to claim 5, characterized in that: It includes an emptying return circuit, a two-way solenoid valve C, a two-way solenoid valve B, a two-way solenoid valve D, a two-way solenoid valve E and a second water pump; wherein: One end of the emptying return path is connected to the water tank of the water dispenser, and the other end is connected to the first water supply path and the second water supply path of the water dispenser respectively; The two-way solenoid valve C is installed in the second water supply path and is located upstream of the heating element B in the water dispenser; The two-way solenoid valve D is installed in the first water supply path and is located upstream of the heating element A in the water dispenser; The two-way solenoid valve B is installed at the connection between the emptying return path and the second water supply path; The two-way solenoid valve E is installed at the connection between the emptying return path and the first water supply path; The second water pump is installed in the exhaust return path.

7. The emptying water channel structure according to claim 6, characterized in that: One port of the two-way solenoid valve D is connected to an air intake pipe.

8. The emptying water channel structure according to claim 6, characterized in that: One port of the two-way solenoid valve C is connected to an air intake pipe.

9. The emptying water channel structure according to claim 7 or 8, characterized in that: The air inlet pipe is provided with an openable and closable dustproof rubber plug.

10. An instant hot water dispenser, characterized in that: It comprises the emptying water channel structure as described in any one of claims 5-9.

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