Warm boiled water machine

Abstract

The utility model relates to a warm boiled water machine which comprises a water inlet connector, a water outlet nozzle, a heating device, a heat exchange assembly and a plurality of pipelines, the water outlet end of the water inlet connector is connected with the water inlet end of the heating device, and the water outlet end of the heating device is connected with the water inlet end of the water outlet nozzle. The water outlet end of the heating device is provided with the first blocking valve used for controlling the water outlet end to be separated from or communicated with the water outlet nozzle, and by arranging the first blocking valve, unheated cold water between the water outlet end of the water inlet connector and the heating device can be prevented from flowing out of the heating device when the warm boiled water machine stops working; the situation that bacteria in a pipeline between the heating device and the water outlet nozzle exceed the standard can be effectively avoided, and the warm boiled water machine is cleaner and more sanitary.

Description

Technical Field

[0001] The utility model relates to the technical field of household electrical appliances, in particular to a warm water machine and a water heating method. Background Art

[0002] A warm water machine is a drinking water device that uses thermal energy to produce boiling water in order to meet the needs of users for drinking boiled water. When using a water machine, users need not only hot water that is close to boiling (such as 98°C) but also boiled water at a lower temperature for direct drinking.

[0003] When the warm water machine is working, the water inlet joint will continue to supply cold water to the heating device. When the heating device stops heating, the water inlet joint will also stop supplying cold water to the heating device. Therefore, unheated cold water will remain in the pipe between the heating device and the water inlet joint. The bacteria in the cold water will continue to grow and spread toward the water outlet of the heating device, causing the bacterial content in the pipe between the heating device and the water outlet to easily exceed the standard, affecting the hygiene of the warm water machine.

[0004] Therefore, further improvements are needed. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and to provide a warm water machine, which can effectively avoid the occurrence of excessive bacteria in the pipeline between the heating device and the water outlet, making the warm water machine cleaner and more sanitary.

[0006] The purpose of the utility model is achieved in this way:

[0007] A warm water machine comprises a water inlet joint, a water outlet nozzle, a heating device, a heat exchange component and a plurality of pipelines, wherein the water outlet end of the water inlet joint is connected to the water inlet end of the heating device, the water outlet end of the heating device is connected to the water inlet end of the water outlet nozzle, the water outlet end of the heating device is provided with a first blocking valve for controlling the isolation or connection between the water outlet end and the heating device, when the warm water machine is working, the water outlet end of the heating device is connected to the water outlet nozzle through the first blocking valve, and when the warm water machine is turned off or on standby, the water outlet end of the heating device is isolated from the water outlet nozzle through the first blocking valve.

[0008] As a specific solution, the first blocking valve is a one-way valve, the water inlet end of the first blocking valve is connected to the water outlet end of the heating device, and the water outlet end of the first blocking valve is connected to the water inlet end of the water outlet nozzle. When the warm water machine is working, the water flow at the water outlet end of the heating device pushes open the first blocking valve to connect the water outlet end of the heating device with the water outlet nozzle. When the warm water machine is turned off or on standby, the first blocking valve is reset to separate the water outlet end of the heating device from the water outlet nozzle.

[0009] Alternatively, the first blocking valve is a solenoid valve, which is normally closed. When the warm water machine is working, the first blocking valve opens to connect the water outlet of the heating device with the water outlet nozzle. When the warm water machine is turned off or on standby, the first blocking valve remains normally closed to isolate the water outlet of the heating device from the water outlet nozzle.

[0010] As a specific solution, a water filtering device is provided on the pipeline between the water outlet end of the water inlet joint and the water inlet interface.

[0011] As a specific scheme, the heat exchange component includes a cooling heat exchanger and a heating heat exchanger, and a first water flow switching valve is provided between the water outlet end of the water inlet joint and the water inlet end of the heating device. The first water flow switching valve has an inlet interface, a first water outlet interface, a second water outlet interface and a switching valve assembly for controlling the connection between the water inlet interface and the first water outlet interface or the second water outlet interface. The water outlet end of the water inlet joint is connected to the water inlet interface through a pipeline, the first water outlet interface is connected to the water inlet end of the heating device through a pipeline, the second water outlet interface is connected to the water inlet end of the heating heat exchanger through a pipeline, the water outlet end of the heating heat exchanger is connected to the water inlet end of the heating device through a pipeline, the water outlet end of the heating device is connected to the water inlet end of the cooling heat exchanger through a pipeline, and the water outlet end of the cooling heat exchanger is connected to the water inlet end of the water outlet nozzle through a pipeline.

[0012] As a specific solution, a second blocking valve is provided on the pipeline between the water outlet of the temperature-raising heat exchanger and the water inlet of the heating device. The second blocking valve has a first one-way flow channel. The first one-way flow channel can be opened when pressure is generated in the direction of the temperature-raising heat exchanger, or the first one-way flow channel can be blocked when pressure stops being generated in the direction of the temperature-raising heat exchanger.

[0013] As a specific solution, a third blocking valve is provided on the pipeline between the first water outlet interface and the water inlet end of the heating device, and the third blocking valve has a second one-way flow channel. The second one-way flow channel can be opened when pressure is generated in the direction of the first water outlet interface, or the first one-way flow channel can be blocked when pressure stops being generated in the direction of the first water outlet interface.

[0014] As a specific solution, the water inlet end of the water outlet is connected to a water temperature regulating valve, which has a high-temperature water inlet interface, a low-temperature water inlet interface, a mixed water outlet interface, and a regulating valve assembly for adjusting the ratio of water flow passing through the high-temperature water inlet interface and the low-temperature water inlet interface to the mixed water outlet interface respectively. The water outlet end of the heating device is connected to the high-temperature water inlet interface through a pipeline, the water outlet end of the cooling heat exchanger is connected to the low-temperature water inlet interface through a pipeline, and the water inlet end of the water outlet is connected to the mixed water outlet interface.

[0015] As a specific solution, the water outlet end of the cooling heat exchanger is connected to a second water flow switching valve, the second water flow switching valve has a water inlet interface, a first drain interface, a second drain interface, and a switching valve assembly for controlling the connection between the water inlet interface and the first drain interface or the second drain interface. The water inlet interface is connected to the water outlet end of the cooling heat exchanger through a pipeline, the first drain interface is connected to the low-temperature water inlet interface through a pipeline, and the second drain interface is connected to the water outlet end of the water inlet joint through a pipeline.

[0016] As a specific solution, a water outlet control valve is provided in the heating device, the water outlet control valve is electrically connected to the control device, and the control device is electrically connected to the heating device.

[0017] The beneficial effects of the utility model are:

[0018] By setting the first blocking valve, unheated cold water between the water outlet end of the water inlet joint and the heating device can be prevented from flowing out of the heating device when the warm water machine stops working. This can effectively prevent the occurrence of excessive bacteria in the pipeline between the heating device and the water outlet, making the warm water machine cleaner and more hygienic. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the first embodiment of the utility model.

[0020] Figure 2 The first embodiment of the utility model is shown in FIG. Figure 1 .

[0021] Figure 3 The first embodiment of the utility model is shown in FIG. Figure 2 .

[0022] Figure 4 It is a structural schematic diagram of the second embodiment of the utility model. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] First embodiment:

[0025] See also Figure 1-Figure 3The warm water machine comprises a water inlet joint 1, a water outlet nozzle 2, a heating device 3, a heat exchange component and a plurality of pipelines. The water outlet end of the water inlet joint 1 is connected to the water inlet end of the heating device 3, and the water outlet end of the heating device 3 is connected to the water inlet end of the water outlet nozzle 2. It is characterized in that the water outlet end of the heating device 3 is provided with a first blocking valve 71 for controlling the isolation or connection between the water outlet end and the water outlet nozzle 2. When the warm water machine is working, the water outlet end of the heating device 3 is connected to the water outlet nozzle 2 through the first blocking valve 71, and the heated high-temperature hot water can flow to the water outlet nozzle 2 through the first one-way flow channel. When the warm water machine is turned off or on standby, the water outlet end of the heating device 3 is isolated from the water outlet nozzle 2 through the first blocking valve 71, and unheated cold water cannot flow to the water outlet nozzle 2 through the first one-way flow channel.

[0026] By setting the first blocking valve 71, when the warm water machine stops working, it can prevent unheated cold water between the water outlet end of the water inlet joint 1 and the heating device 3 from flowing out of the heating device 3, and can effectively prevent the occurrence of excessive bacteria in the pipeline between the heating device 3 and the water outlet 2, making the warm water machine cleaner and more hygienic.

[0027] Furthermore, the first blocking valve 71 is a one-way valve, the water inlet end of the first blocking valve 71 is connected to the water outlet end of the heating device 3, and the water outlet end of the first blocking valve 71 is connected to the water inlet end of the water outlet nozzle 2. When the warm water machine is working, the water flow at the water outlet end of the heating device 3 pushes open the first blocking valve 71 to connect the water outlet end of the heating device 3 with the water outlet nozzle 2. When the warm water machine is turned off or on standby, the first blocking valve 71 is reset to isolate the water outlet end of the heating device 3 from the water outlet nozzle 2.

[0028] In other different embodiments, the first blocking valve 71 is a solenoid valve, and the first blocking valve 71 is normally closed. When the warm water machine is working, the first blocking valve 71 opens to connect the water outlet end of the heating device 3 with the water outlet nozzle 2. When the warm water machine is turned off or on standby, the first blocking valve 71 remains normally closed to isolate the water outlet end of the heating device 3 from the water outlet nozzle 2.

[0029] Furthermore, a water pump device 9 is provided on the pipeline between the water inlet joint 1 and the water inlet interface C, the water inlet end of the water pump device 9 is connected to the water outlet end of the water inlet joint 1, and the water outlet end of the water pump device 9 is connected to the water inlet interface C, to ensure that there is sufficient water pressure in the water circuit so that the warm water machine can operate normally, while ensuring the filtering effect of the water filter device 8.

[0030] Furthermore, a water filter 8 is provided on the pipeline between the water outlet of the water inlet connector 1 and the water inlet interface C, which can preliminarily filter the cold water before entering the water inlet interface C, so that the water purification effect of the warm water machine is better. In this embodiment, the water filter 8 can be an RO water filter and / or a PP water filter.

[0031] Furthermore, the heat exchange component includes a cooling heat exchanger 41 and a heating heat exchanger 51. The heating heat exchanger 51 can reduce the temperature of the water passing through the cooling heat exchanger 41 so that the user can obtain boiled water with a lower temperature at the water outlet 2. At the same time, the cooling heat exchanger 41 and the heating heat exchanger 51 can preheat the water in the heating heat exchanger 51 during the thermal interaction. The heating heat exchanger 51 can increase the temperature of the water flow entering the heating device 3 and reduce the energy consumption of the heating device 3.

[0032] A first water flow switching valve 7 is provided between the water outlet end of the water inlet joint 1 and the water inlet end of the heating device 3. The first water flow switching valve 7 has a water inlet interface C, a first water outlet interface A, a second water outlet interface B and a switching valve assembly for controlling the connection between the water inlet interface C and the first water outlet interface A or the second water outlet interface B. The water outlet end of the water inlet joint 1 is connected to the water inlet interface C through a pipeline, the first water outlet interface A is connected to the water inlet end of the heating device 3 through a pipeline, the second water outlet interface B is connected to the water inlet end of the heating heat exchanger 51 through a pipeline, the water outlet end of the heating heat exchanger 51 is connected to the water inlet end of the heating device 3 through a pipeline, the water outlet end of the heating device 3 is connected to the water inlet end of the cooling heat exchanger 41 through a pipeline, and the water outlet end of the cooling heat exchanger 41 is connected to the water inlet end of the water outlet nozzle 2 through a pipeline.

[0033] like Figure 2 As shown, when the normal drinking water function is needed, the switching valve assembly of the first water flow switching valve 7 is controlled to make the second water outlet interface B conductive and the first water outlet interface A closed, so that the water flows only through the second water outlet interface B into the heating device 3.

[0034] like Figure 3 As shown, when it is necessary to disinfect the cooling heat exchanger 41 and the pipeline connected to its water outlet, the switching valve assembly of the first water flow switching valve 7 is controlled to make the first water outlet interface A conductive and the second water outlet interface B closed, so that the water flows only through the first water outlet interface A into the heating device 3. When the high-temperature boiling water generated by the heating device 3 passes through the warm heat exchanger 41 and the pipeline connected to its water outlet, since there is no water flow passing through the warming heat exchanger 51, the water temperature passing through the warm heat exchanger 41 will not drop significantly, so that the high-temperature boiling water can be disinfected in the warm heat exchanger 41 and the pipeline connected to its water outlet. The overall structure is simple, and the user does not need to disassemble and disinfect the warm heat exchanger 41 and the pipeline connected to its water outlet, which simplifies the user's operation of disinfecting the warm heat exchanger 41 and the pipeline connected to its water outlet.

[0035] Moreover, since the first blocking valve 71 is provided, even if the water temperature of the warm heat exchanger 41 is relatively low during use, the bacteria content in the warm heat exchanger 41 and the pipeline between the warm heat exchanger 41 and the water outlet 2 can be prevented from exceeding the standard.

[0036] Furthermore, the water inlet end of the water outlet 2 is connected to a water temperature regulating valve 21, which has a high-temperature water inlet interface D, a low-temperature water inlet interface E, a mixed water outlet interface F, and a regulating valve assembly for adjusting the ratio of water flow passing through the high-temperature water inlet interface D and the low-temperature water inlet interface E to the mixed water outlet interface F. The water outlet end of the heating device 3 is connected to the high-temperature water inlet interface D through a pipeline, the water outlet end of the cooling heat exchanger 41 is connected to the low-temperature water inlet interface E through a pipeline, and the water inlet end of the water outlet 2 is connected to the mixed water outlet interface F. The user uses the water temperature control valve 21 to allow the water outlet 2 to obtain boiled water at different temperatures.

[0037] Furthermore, the water outlet end of the cooling heat exchanger 41 is connected to a second water flow switching valve 10, which has a water inlet interface I, a first drain interface G and a second drain interface H, and a switching valve assembly for controlling the connection between the water inlet interface I and the first drain interface G or the second drain interface H. The water inlet interface I is connected to the water outlet end of the cooling heat exchanger 41 through a pipeline, the first drain interface G is connected to the low-temperature water inlet interface E through a pipeline, and the second drain interface H is connected to the water outlet end of the water inlet joint 1 through a pipeline.

[0038] like Figure 2 As shown, when the cooling heat exchanger 41 is required to supply water to the water temperature regulating valve 21 normally, the switching valve assembly of the second water flow switching valve 10 connects the water inlet interface I with the first drainage interface G.

[0039] like Figure 3 As shown, when it is necessary to disinfect the pipes in the warm water machine, the switching valve assembly of the second water flow switching valve 10 can be used to connect the water inlet interface I with the first drainage interface H, and the high-temperature disinfectant water will flow to the water outlet end of the water inlet connector 1 and form a circulation. At this time, the external water supply to the water inlet connector 1 can be stopped, reducing water consumption. At the same time, the temperature of the disinfectant hot water will gradually increase during the circulation process until the pipe between the water inlet end of the heating device 3 and the water inlet connector 1 is also disinfected.

[0040] Furthermore, a water outlet control valve is provided in the heating device 3 , the water outlet control valve is electrically connected to the control device, and the control device is electrically connected to the heating device 3 .

[0041] The heating device 3 heats the cold water entering it through the following steps:

[0042] Step 1: The control device starts the heating device 3 and controls the water outlet control valve 31 to remain in the disconnected state for a time period t, and then enters step 2, where t can be 3s-10s.

[0043] Step 2: The control device controls the water outlet control valve 31 to switch from the disconnected state to the open state and maintain the open state, while the first one-way flow channel of the first blocking valve 71 remains open until the heating device 3 enters step 3.

[0044] Step 3: The control device controls the water outlet control valve 31 to switch from the open state to the disconnected state and maintain the disconnected state, while the first one-way flow channel of the first blocking valve 71 remains blocked.

[0045] The water in the heating device 3 can be fully heated to a high temperature before flowing to the water outlet 2, making the water heater cleaner and more hygienic.

[0046] Second embodiment:

[0047] See also Figure 4 The difference between this embodiment and the first embodiment is that a second blocking valve 72 is provided on the pipeline between the water outlet end of the heating heat exchanger 51 of the warm water machine and the water inlet end of the heating device 3. The second blocking valve 72 has a first one-way flow channel. The first one-way flow channel can be opened when pressure is generated in the direction of the heating heat exchanger 51, or the first one-way flow channel can be blocked when pressure stops being generated in the direction of the heating heat exchanger 51. When it is necessary to disinfect the heat exchange pipeline of the cooling heat exchanger 41, water passing through the first water outlet interface A can be prevented from flowing into the heating heat exchanger 51, so as to avoid the water temperature in the warm heat exchanger 41 being not high enough due to the presence of cold water in the heating heat exchanger 51, thereby affecting the disinfection effect.

[0048] Preferably, the second blocking valve 72 is a one-way valve, the water inlet end of the second blocking valve 72 is connected to the water outlet end of the temperature-raising heat exchanger 51 , and the water outlet end of the second blocking valve 72 is connected to the water inlet end of the heating device 3 .

[0049] Furthermore, a third blocking valve 73 is provided on the pipeline between the first water outlet interface A and the water inlet end of the heating device 3. The third blocking valve 73 has a second one-way flow channel. The second one-way flow channel can be opened when pressure is generated in the direction of the first water outlet interface A, or the first one-way flow channel can be blocked when pressure stops being generated in the direction of the first water outlet interface A. When the normal drinking water function is needed, water passing through the second water outlet interface B can be prevented from flowing into the first water outlet interface A.

[0050] Preferably, the third blocking valve 73 is a one-way valve, a water inlet end of the third blocking valve 73 is connected to the first water outlet interface A, and a water outlet end of the third blocking valve 73 is connected to the water inlet end of the heating device 3 .

[0051] The remaining undescribed parts are the same as those of the first embodiment and will not be repeated here.

[0052] The above embodiments are only preferred embodiments of the present invention, and the present invention may have other embodiments. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all within the scope set by the claims of this application.

Claims

1. A warm water machine, comprising a water inlet joint (1), a water outlet nozzle (2), a heating device (3), a heat exchange component and a plurality of pipelines, wherein the water outlet end of the water inlet joint (1) is connected to the water inlet end of the heating device (3), and the water outlet end of the heating device (3) is connected to the water inlet end of the water outlet nozzle (2), characterized in that: The water outlet of the heating device (3) is provided with a first blocking valve (71) for controlling whether the water outlet is disconnected from or connected to the water outlet (2); when the warm water machine is in operation, the water outlet of the heating device (3) is connected to the water outlet (2) via the first blocking valve (71); when the warm water machine is turned off or in standby mode, the water outlet of the heating device (3) is disconnected from the water outlet (2) via the first blocking valve (71).

2. The warm water machine according to claim 1, characterized in that: The first blocking valve (71) is a one-way valve, the water inlet end of the first blocking valve (71) is connected to the water outlet end of the heating device (3), and the water outlet end of the first blocking valve (71) is connected to the water inlet end of the water outlet nozzle (2). When the warm water machine is working, the water flow at the water outlet end of the heating device (3) pushes the first blocking valve (71) open so that the water outlet end of the heating device (3) is connected to the water outlet nozzle (2). When the warm water machine is turned off or in standby mode, the first blocking valve (71) is reset so that the water outlet end of the heating device (3) is disconnected from the water outlet nozzle (2). Alternatively, the first blocking valve (71) is a solenoid valve, and the first blocking valve (71) is normally closed. When the warm water machine is in operation, the first blocking valve (71) is opened to connect the water outlet end of the heating device (3) to the water outlet nozzle (2). When the warm water machine is turned off or in standby mode, the first blocking valve (71) remains normally closed to isolate the water outlet end of the heating device (3) from the water outlet nozzle (2).

3. The warm water machine according to claim 1, characterized in that: A water filtering device (8) is provided on the pipeline between the water outlet end of the water inlet joint (1) and the water inlet interface (C).

4. The warm water machine according to claim 1, characterized in that: The heat exchange assembly comprises a cooling heat exchanger (41) and a heating heat exchanger (51); a first water flow switching valve (7) is provided between the water outlet end of the water inlet joint (1) and the water inlet end of the heating device (3); the first water flow switching valve (7) comprises a water inlet interface (C), a first water outlet interface (A), a second water outlet interface (B), and a switching valve assembly for controlling the water inlet interface (C) to be connected to the first water outlet interface (A) or the second water outlet interface (B); the water outlet end of the water inlet joint (1) is connected to the first water outlet interface (A), and the second water outlet interface (B) is connected to the first water outlet interface (A). The first water outlet interface (A) is connected to the water inlet end of the heating device (3) through a pipeline, the second water outlet interface (B) is connected to the water inlet end of the heating device (51) through a pipeline, the water outlet end of the heating device (51) is connected to the water inlet end of the heating device (3) through a pipeline, the water outlet end of the heating device (3) is connected to the water inlet end of the cooling heat exchanger (41) through a pipeline, and the water outlet end of the cooling heat exchanger (41) is connected to the water inlet end of the water outlet nozzle (2) through a pipeline.

5. The warm water machine according to claim 4, characterized in that: A second blocking valve (72) is provided on the pipeline between the water outlet of the temperature-raising heat exchanger (51) and the water inlet of the heating device (3), and the second blocking valve (72) has a first one-way flow channel, and the first one-way flow channel can be opened when pressure is generated in the direction of the temperature-raising heat exchanger (51), or the first one-way flow channel can be blocked when pressure stops being generated in the direction of the temperature-raising heat exchanger (51).

6. The warm water machine according to claim 4, characterized in that: A third blocking valve (73) is provided on the pipeline between the first water outlet interface (A) and the water inlet end of the heating device (3), and the third blocking valve (73) has a second one-way flow channel, and the second one-way flow channel can be opened when pressure is generated in the direction of the first water outlet interface (A), or the first one-way flow channel can be blocked when pressure stops being generated in the direction of the first water outlet interface (A).

7. The warm water machine according to claim 4, characterized in that: The water inlet end of the water outlet nozzle (2) is connected to a water temperature regulating valve (21), the water temperature regulating valve (21) having a high-temperature water inlet interface (D), a low-temperature water inlet interface (E), a mixed water outlet interface (F), and a regulating valve assembly for regulating the ratio of water flow rates flowing from the high-temperature water inlet interface (D) and the low-temperature water inlet interface (E) to the mixed water outlet interface (F), the water outlet end of the heating device (3) is connected to the high-temperature water inlet interface (D) through a pipeline, the water outlet end of the cooling heat exchanger (41) is connected to the low-temperature water inlet interface (E) through a pipeline, and the water inlet end of the water outlet nozzle (2) is connected to the mixed water outlet interface (F).

8. The warm water machine according to claim 7, characterized in that: The water outlet of the cooling heat exchanger (41) is connected to a second water flow switching valve (10), the second water flow switching valve (10) having a water inlet interface (I), a first drainage interface (G) and a second drainage interface (H), and a switching valve assembly for controlling the water inlet interface (I) to be connected to the first drainage interface (G) or the second drainage interface (H), the water inlet interface (I) being connected to the water outlet of the cooling heat exchanger (41) via a pipeline, the first drainage interface (G) being connected to the low-temperature water inlet interface (E) via a pipeline, and the second drainage interface (H) being connected to the water outlet of the water inlet joint (1) via a pipeline.

9. The warm water machine according to any one of claims 1 to 7, characterized in that: A water outlet control valve is provided in the heating device (3), the water outlet control valve is electrically connected to a control device, and the control device is electrically connected to the heating device (3).

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