Heating water path, water heater heating system and water heater

Abstract

The application discloses a heating water path, a water heater heating system and a water heater. The heating water path comprises a water inlet flow path, a heat exchange flow path and a water outlet flow path connected in sequence, the heat exchange flow path can cooperate with a heating device to heat water in the heat exchange flow path, the heating water path further comprises a hot water temporary storage device, a cold water temporary storage device and a driving device; the hot water temporary storage device comprises a hot water cavity connected with the water outlet flow path; the cold water temporary storage device comprises a cold water cavity connected with the water inlet flow path; a hot water outlet of the hot water cavity and a cold water outlet of the cold water cavity can converge and communicate with the heat exchange flow path; the driving device can drive the hot water cavity to discharge water to the heat exchange flow path when water is turned off and then turned on, and can drive the cold water cavity to discharge water to the heat exchange flow path after the hot water cavity finishes discharging water. The application can realize seamless connection of hot water, so that the phenomenon of sudden drop of water temperature does not occur when water is turned off and then turned on, and the problem that a user needs to wait for a long time to obtain hot water of a predetermined temperature does not exist.

Description

[0001] The present application claims priority to the Chinese Patent Application No. 202310117452.7, filed on January 20, 2023, and entitled "Heating Water Path, Water Heater Heating System and Water Heater", which is incorporated herein in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of water heaters, and in particular to a heating water path, a water heater heating system and a water heater. BACKGROUND

[0003] During use, a gas water heater often has the problem of switching water on and off. After the water is turned on for a period of time and then turned off, the pipe is filled with hot water. However, when the water is turned on again immediately, ignition and transmission of fire are required at the start. After these processes are completed, the water heater can burn according to the user's required water temperature. Therefore, the user at the faucet end will feel that the water temperature is first hot (the hot water left in the pipe before), then slowly cools down (cold water appears during the ignition and transmission process), and then becomes hot again (the hot water burned according to the user's requirement). The water temperature experience is particularly poor. This phenomenon is called water temperature drop after re-outflow.

[0004] As shown in Figure 9 The market currently has a heat pool used to solve this problem. The heat pool 1 is directly arranged in the water outlet channel of the water heater. The hot water just burned needs to be mixed with the hot water in the heat pool 1 before it can flow out. Therefore, only when all the water in the heat pool 1 is replaced, can the temperature of the faucet reach the set temperature, which leads to the user needing to wait for a long time before the faucet outlet temperature can reach the set temperature when using water for the first time. SUMMARY

[0005] The technical problem to be solved by the present application is to overcome the defect that the first outlet water needs to wait for a long time to reach the set temperature in the prior art, and to provide a heating water path, a water heater heating system and a water heater.

[0006] The present application solves the above technical problems by the following technical solutions:

[0007] The present application provides a heating water path, comprising a water inlet flow path, a heat exchange flow path and a water outlet flow path connected in sequence, the heat exchange flow path being capable of cooperating with a heating device to heat the water in the heat exchange flow path, the heating water path further comprising a hot water temporary storage device, a cold water temporary storage device and a driving device;

[0008] The hot water temporary storage device comprises a hot water cavity communicating with the water outlet flow path;

[0009] The cold water temporary storage device comprises a cold water cavity communicating with the water inlet flow path;

[0010] The hot water outlet of the hot water cavity and the cold water outlet of the cold water cavity are capable of converging and communicating to the heat exchange flow path;

[0011] The driving device is capable of driving the hot water cavity to discharge water to the heat exchange flow path when the water is turned off and then turned on, and is capable of driving the cold water cavity to discharge water to the heat exchange flow path after the water discharge of the hot water cavity is completed.

[0012] When the water is turned off and then turned on, at this time, the heating device needs to perform the work of ignition and scavenging, and therefore the heat exchange flow path does not have a heating effect. By driving the hot water cavity to discharge water to the heat exchange flow path, the hot water that is ready can flow through the heat exchange flow path when there is no heat exchange effect, and there is no phenomenon of cold water discharge.

[0013] When the water discharge in the hot water cavity reaches a certain time, at this time, the work of ignition and scavenging of the heating device has been completed, and the heating device can heat the heat exchange flow path. At this time, the driving device drives the cold water cavity to discharge water to the heat exchange flow path in a seamless manner, so that the phenomenon of sudden drop in water temperature does not occur when the water is turned off and then turned on.

[0014] In addition, by using the scheme, hot water with a temperature close to the expected temperature can be obtained immediately, and there is no problem of waiting for a long time to obtain hot water with a predetermined temperature.

[0015] Preferably, the driving device comprises a linkage piston acting on the cold water cavity and the hot water cavity. When the linkage piston moves to reduce the hot water containing space formed by the linkage piston and the hot water cavity, the cold water containing space formed by the linkage piston and the cold water cavity correspondingly increases. The cold water outlet can communicate with the cold water containing space when the cold water containing space increases to a preset volume.

[0016] When the water is turned on and then turned off, the linkage piston moves in a direction corresponding to the reduction of the hot water containing space, so that the hot water is correspondingly squeezed out of the hot water outlet to the heat exchange flow path. At the same time when the hot water containing space is reduced, the cold water containing space is synchronously increased to contain the cold water discharged from the water inlet flow path. When the cold water containing space increases to a preset volume, that is, the hot water containing space reduces to a preset volume, the cold water in the cold water cavity can flow out of the cold water outlet to the heat exchange flow path, so as to seamlessly connect the previous hot water, and smoothly transition between the hot water discharge and the cold water discharge, without the problem of dramatic fluctuation of water quantity.

[0017] Preferably, the linkage piston can be driven by the water pressure of the water inlet flow path to increase the cold water containing space.

[0018] By using such a hydraulic driving scheme, the power device can be omitted, thereby saving cost and reducing space occupation.

[0019] Preferably, the hot water outlet is provided with a one-way valve allowing hot water to flow out.

[0020] Thus, cold water in the heat exchange flow path can be prevented from flowing back into the hot water chamber, while hot water in the hot water chamber can flow out through the one-way valve under the pressure of the linkage piston, ensuring normal operation of the thermostat system.

[0021] Preferably, the hot water branch is provided between the hot water chamber and the water outlet flow path, and the cold water branch is provided between the water inlet flow path and the heat exchange flow path to bypass the cold water temporary storage device. The heating water path further comprises a first electromagnetic valve provided on the cold water branch, a second electromagnetic valve provided on the hot water branch, and a control device capable of detecting the water volume of the heating water path, switching the first electromagnetic valve and the second electromagnetic valve from a closed state to an open state when the water volume is within a preset water volume range, and switching the first electromagnetic valve and the second electromagnetic valve from an open state to a closed state when the water volume exceeds the preset water volume range, wherein the preset water volume range is smaller than the working water volume range of the heating device.

[0022] When normal water is discharged, the water volume is greater than the preset water volume range, and at this time the first electromagnetic valve and the second electromagnetic valve are both in a closed state. Cold water enters the cold water chamber from the cold water inlet on the cold water chamber and acts on the linkage piston to move it in a direction to increase the cold water containing space. When the cold water containing space reaches a preset volume, the cold water in the cold water chamber can flow out through the cold water outlet and flow through the heat exchange flow path, and finally flow out from the water outlet flow path. At this time, the working state of the heating water path is the same as that of a common heating water path.

[0023] When the user closes the faucet, the water volume decreases and enters the preset water volume range, and at this time the first electromagnetic valve and the second electromagnetic valve are opened. At this time, the hot water at the water outlet flow path flows into the hot water chamber through the hot water branch, driving the linkage piston to move downward and expelling the water in the cold water chamber, which is heated by the heating device under the action of residual heat and continuously flows into the hot water chamber through the hot water branch. When the piston moves to the lowermost position, the hot water will stop flowing into the water tank, and at this time the water flow sensor detects that the water inlet flow gradually decreases and eventually becomes 0. When the flow is less than 1L / min, i.e. the water volume exceeds the preset water volume range, it is judged that the water tank is full of hot water, and the controller closes the first electromagnetic valve and the second electromagnetic valve. Maintain this state and wait for the user to open the hot water faucet again.

[0024] When the user opens the hot water faucet again, cold water enters the cold water chamber and pushes the linkage piston to expel the hot water in the hot water chamber. When the hot water flow is complete, the heating device has been started, and at this time the cold water in the cold water chamber is connected to the heat exchange flow path for heating, realizing the constant temperature water discharge effect of closing and opening the water.

[0025] Preferably, the driving device comprises a linkage piston acting on the cold water cavity and the hot water cavity, when the linkage piston moves to reduce the hot water containing space formed by the linkage piston and the hot water cavity, the cold water containing space formed by the linkage piston and the cold water cavity correspondingly increases, the linkage piston comprises a first piston acting on the hot water cavity and a second piston acting on the cold water cavity, wherein the diameter of the first piston is larger than that of the second piston.

[0026] With the structure, on one hand, the volume of the hot water cavity can be increased, the time of hot water flowing through is increased, and the heating device has more time for preheating; on the other hand, since the hot water cavity corresponds to the large head of the piston, the driving force of the piston towards the cold water cavity is larger, and the hot water can be more conveniently merged into the hot water cavity.

[0027] Preferably, the cold water temporary storage device and the hot water temporary storage device have a shared shell.

[0028] Therefore, the integration of the heating water circuit can be improved, the cost can be reduced, and the volume occupation can be reduced.

[0029] The application further provides a water heater heating system comprising the heating water circuit and the heating device as described above, and the heating device can conduct heat to the heat exchange flow path.

[0030] Preferably, the heating device can maintain a combustion state after water is turned off until the water amount of the heating water circuit is lower than a preset water amount range.

[0031] With the arrangement, during the process of collecting hot water after water is turned off, the heating device can still continuously heat the heat exchange flow path, so that the collected hot water has a higher temperature, and the constant temperature effect is improved.

[0032] The application further provides a water heater comprising the water heater heating system as described above.

[0033] The positive progress effect of the application is that:

[0034] The seamless connection of hot water can be realized, so that the phenomenon of sudden temperature drop when water is turned off and then turned on again does not occur.

[0035] With the scheme, hot water with a temperature approximately equal to the expected temperature can be obtained immediately, and the problem that hot water with a predetermined temperature needs to be waited for a long time does not exist. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a pipeline diagram of the heating water circuit;

[0037] Figure 2 is a structural diagram of the cold water temporary storage device, the hot water temporary storage device and the driver;

[0038] Figure 3 Fig. 6 is a circuit diagram of the heating water circuit when the heating water circuit is in a normal working state;

[0039] Figure 4 Fig. 7 is a circuit diagram of the heating water circuit when the heating water circuit is in a normal working state;

[0040] Figure 5 Fig. 8 is a circuit diagram of the heating water circuit when the heating water circuit is in a normal working state;

[0041] Figure 6 Fig. 9 is a circuit diagram of the heating water circuit when the heating water circuit is in a normal working state;

[0042] Figure 7 Fig. 10 is a circuit diagram of the control device;

[0043] Figure 8 Fig. 11 is a circuit diagram of the control device;

[0044] Figure 9 Fig. 12 is a view of a conventional heating water circuit with a hot water tank;

[0045] BRIEF DESCRIPTION OF DRAWINGS

[0046] Water inlet flow path 100

[0047] Cold water branch 110

[0048] First electromagnetic valve 111

[0049] Heat exchange flow path 200

[0050] Water outlet flow path 300

[0051] Hot water branch 310

[0052] Second electromagnetic valve 311

[0053] Hot water tank 400

[0054] Hot water outlet 410

[0055] Check valve 411

[0056] Hot water storage space 420

[0057] Hot water inlet 430

[0058] Cold water tank 500

[0059] Cold water outlet 510

[0060] Cold water storage space 520

[0061] Cold water inlet 530

[0062] Linkage piston 600

[0063] first piston 610

[0064] second piston 620

[0065] control device 700

[0066] water amount sensor 710

[0067] heater 800 DETAILED DESCRIPTION

[0068] The present application will be further described by way of examples, but the present application is not limited to the examples.

[0069] In combination Figure 1 The present application provides a heating water path, comprising a water inlet flow path 100, a heat exchange flow path 200 and a water outlet flow path 300 connected in sequence, the heat exchange flow path 200 being capable of cooperating with a heating device to heat water in the heat exchange flow path 200.

[0070] In combination Figure 2 The heating water path further comprises a hot water temporary storage device, a cold water temporary storage device and a driving device.

[0071] The hot water temporary storage device comprises a hot water cavity 400 communicating with the water outlet flow path 300, so that at least part of hot water in the water outlet flow path 300 flows into and is temporarily stored in the hot water cavity 400.

[0072] The cold water temporary storage device comprises a cold water cavity 500 communicating with the water inlet flow path 100, so that at least part of cold water in the water inlet flow path 100 flows into and is temporarily stored in the cold water cavity 500.

[0073] The hot water outlet 410 of the hot water cavity 400 and the cold water outlet 510 of the cold water cavity 500 are capable of converging and communicating to the heat exchange flow path 200;

[0074] The driving device is capable of driving the hot water cavity 400 to discharge water to the heat exchange flow path 200 when water is turned off and turned on, and is capable of driving the cold water cavity 500 to discharge water to the heat exchange flow path 200 after the hot water cavity 400 finishes discharging water.

[0075] When water is turned off and turned on, at this time, since the heating device needs to perform the work of ignition and scavenging, the heat exchange flow path 200 does not have a heating effect, by driving the hot water cavity 400 to discharge water to the heat exchange flow path 200, the water flowing through the heat exchange flow path 200 at this time is ready hot water, and there is no cold water discharge phenomenon.

[0076] When the water in the hot water cavity 400 is out for a certain time, the ignition and scavenging of the heating device have been completed, and the heating device can heat the heat exchange flow path 200. At this time, the driving device drives the cold water cavity 500 to be connected to the heat exchange flow path 200 to output water. Since the heat exchange flow path 200 has been heated, seamless connection of hot water can be achieved, so that the water temperature does not drop sharply when the water is turned off and then turned on again.

[0077] In addition, the hot water with a temperature close to the expected temperature can be obtained immediately, and there is no problem of waiting for a long time to obtain hot water with a predetermined temperature.

[0078] In combination Figure 2 In this embodiment, the driving device includes a linkage piston 600 that can act on the cold water cavity 500 and the hot water cavity 400. When the linkage piston 600 moves to reduce the hot water containing space 420 formed by the linkage piston 600 and the hot water cavity 400, the cold water containing space 520 formed by the linkage piston 600 and the cold water cavity 500 increases correspondingly. The cold water outlet 510 can be connected to the cold water containing space 520 when the cold water containing space 520 increases to a predetermined volume.

[0079] When the boiled water is turned off and then turned on again, the linkage piston 600 moves in a direction corresponding to the decrease of the hot water containing space 420, so that the hot water is correspondingly squeezed out of the hot water outlet 410 to the heat exchange flow path 200. At the same time when the hot water containing space 420 decreases, the cold water containing space 520 increases synchronously to contain the cold water flowing out of the water inlet flow path 100. When the cold water containing space 520 increases to a predetermined volume, that is, the hot water containing space 420 decreases to a predetermined volume, the cold water in the cold water cavity 500 can flow out of the cold water outlet 510 to the heat exchange flow path, thereby seamlessly connecting the previous hot water, smoothly transitioning between hot water and cold water, and avoiding the problem of dramatic fluctuations in water volume.

[0080] In this embodiment, to better improve the utilization rate, the cold water containing space is preferably reduced to a volume close to zero when the hot water containing space 420 decreases to a volume close to zero. In this way, the cold water can be connected to the cold water outlet when the hot water in the hot water cavity 400 is just used up, thereby improving the utilization rate of hot water and facilitating the control of the volume of the hot water cavity 400 and the reduction of the manufacturing cost of the hot water cavity 400.

[0081] In this embodiment, the linkage piston 600 can be driven by the water pressure of the water inlet flow path 100 to increase the cold water containing space 520. The use of such a hydraulic driving scheme can save power devices, thereby saving costs and reducing space occupation. The cold water inlet 530 of the cold water cavity 500 is preferably arranged at the bottom of the cold water cavity 500, so that the water pressure of the water inlet flow path 100 can first act on the linkage piston 600.

[0082] In combination Figure 3 , Figure 4 , Figure 5 and Figure 6 , in this embodiment, a one-way valve 411 is provided at the hot water outlet 410 to allow hot water to flow out. Thus, cold water in the heat exchange flow path 200 can be prevented from flowing back into the hot water cavity 400, while the hot water in the hot water cavity 400 can flow out through the one-way valve 411 under the pressure of the linkage piston 600. This ensures the normal operation of the thermostat system. The one-way valve 411 is preferably provided at the top of the hot water cavity 400, so that when the hot water storage space 420 is close to zero, the hot water can still continue to flow out from the one-way valve 411.

[0083] In combination Figure 7 and Figure 8 , in this embodiment, the hot water branch 310 is provided between the water outlet flow path 300 and the hot water cavity 400, the cold water branch 110 is provided between the water inlet flow path 100 and the heat exchange flow path 200 to bypass the cold water temporary storage device, the heating water path further comprises a first electromagnetic valve 111 provided on the cold water branch 110 and a second electromagnetic valve 311 provided on the hot water branch 310, and a control device 700 capable of detecting the water volume of the heating water path through a water volume sensor 710. The control device 700 can detect the water volume of the heating water path, and switch the first electromagnetic valve 111 and the second electromagnetic valve 311 from the closed state to the open state when the water volume is within a preset water volume interval, and switch the first electromagnetic valve 111 and the second electromagnetic valve 311 from the open state to the closed state when the water volume exceeds the preset water volume interval, wherein the preset water volume interval is less than the working water volume interval of the heating device.

[0084] The preset water volume interval is 1L / min-2L / min.

[0085] When normal water is discharged, the water volume is greater than the preset water volume interval, at which time the first electromagnetic valve 111 and the second electromagnetic valve 311 are both in the closed state. Cold water enters the cold water cavity 500 from the cold water inlet 530 on the cold water cavity 500 and acts on the linkage piston 600 to move it in the direction of increasing the cold water storage space 520. When the cold water storage space 520 reaches the preset volume, the cold water in the cold water cavity 500 can flow out through the cold water outlet 510 and flow through the heat exchange flow path 200, and finally flow out from the water outlet flow path 300. At this time, the working state of the heating water path is the same as that of the common heating water path.

[0086] When the user closes the faucet, the water quantity decreases and enters the preset water quantity interval, at this time the first electromagnetic valve 111 and the second electromagnetic valve 311 are opened. At this time, the hot water at the water outlet flow path 300 flows into the hot water cavity 400 through the hot water branch 310, driving the linkage piston 600 to move downward, and the water in the cold water cavity 500 is squeezed out, together with the tap water inlet, through the heat exchange flow path 200, heated into hot water under the action of the heating device which leaves residual heat, and continuously and uninterruptedly flows into the hot water cavity 400 through the hot water branch 310. When the piston moves to the lowermost position, the hot water will stop flowing into the water tank, at this time the water inlet flow detected by the water quantity sensor 710 will gradually become smaller, and finally become 0, when the flow is less than 1L / min, that is, the water quantity exceeds the preset water quantity interval, it is judged that the water tank has been filled with hot water, and the controller closes the first electromagnetic valve 111 and the second electromagnetic valve 311. Maintain this state and wait for the user to open the hot water faucet again.

[0087] When the user opens the hot water faucet again, cold water enters the cold water cavity 500, pushing the linkage piston 600 to squeeze out the hot water in the hot water cavity 400, and when the hot water flows out, the heating device has been started, at this time the cold water in the cold water cavity 500 is connected to enter the heat exchange flow path 200 to be heated, realizing the constant temperature water outlet effect of closing the water and opening the water again.

[0088] It should be noted that the hot water inlet 430 on the hot water cavity 400 is preferably arranged on the side wall near the top of the hot water cavity 400, so that when the hot water containing space 420 is in a state close to zero, hot water can still enter the hot water cavity 400 through the hot water inlet 430. Ensure smooth water inlet.

[0089] In combination Figure 2 In this embodiment, the linkage piston 600 includes a first piston 610 acting on the hot water cavity 400 and a second piston 620 acting on the cold water cavity 500, wherein the diameter of the first piston 610 is greater than that of the second piston 620. With such a structure, on the one hand, the volume of the hot water cavity 400 can be increased, and the time of hot water flow can be increased, so that the heating device has more time for preheating, on the other hand, since the hot water cavity 400 corresponds to the large head of the piston, the driving force of the piston towards the cold water cavity 500 is greater, which can more conveniently make the hot water flow into the hot water cavity 400.

[0090] In this embodiment, the cold water temporary storage device and the hot water temporary storage device have a shared housing, thereby improving the integration of the heating water path, reducing cost and reducing volume occupation.

[0091] The application further discloses a water heater heating system, which comprises the heating water path and a heater 800, and heat of the heater 800 can be conducted to the heat exchange flow path 200. In the application, the heater 800 is a heat exchanger with a burner, the burner is communicated with a gas pipeline to carry out gas combustion, and the heat exchange flow path 200 is arranged around the heat exchanger, so that sufficient heat exchange between the heat exchange flow path 200 and the heat exchanger can be achieved.

[0092] In combination Figure 7 In the embodiment, the heating device can maintain the combustion state until the water quantity of the heating water path is lower than the preset water quantity range after the water is turned off. By adopting the arrangement, the heating device can still continuously heat the heat exchange flow path 200 in the process of collecting hot water after the water is turned off, so that the collected hot water has a higher temperature, and the constant temperature effect is improved.

[0093] The application further provides a water heater, which comprises the water heater heating system. The water heater can also achieve the constant temperature water outlet effect in the use scenario of turning off the water and turning on the water.

[0094] Although the specific embodiments of the application are described above, those skilled in the art should understand that this is only an example, the protection scope of the application is defined by the appended claims. Those skilled in the art can make various changes or modifications to the embodiments without departing from the principles and essence of the application, and the changes and modifications all fall within the protection scope of the application.

Claims

1. A water heater characterised by: The application relates to a water heater heating system. The water heater heating system comprises a heating water path and a heating device, and the heating device can conduct heat to a heat exchange path. The heating water path comprises a water inlet path, the heat exchange path and a water outlet path connected in sequence, the heat exchange path can cooperate with the heating device to heat water in the heat exchange path, and the heating water path further comprises a hot water temporary storage device, a cold water temporary storage device and a driving device. The hot water temporary storage device comprises a hot water cavity connected to the water outlet path. The cold water temporary storage device comprises a cold water cavity connected to the water inlet path. The hot water outlet of the hot water cavity and the cold water outlet of the cold water cavity can converge and communicate with the heat exchange path. The driving device can drive the hot water cavity to discharge water to the heat exchange path when water is turned off and then turned on, and can drive the cold water cavity to discharge water to the heat exchange path after the hot water cavity stops discharging water. The driving device comprises a linkage piston acting on the cold water cavity and the hot water cavity, when the linkage piston moves to reduce a hot water containing space formed by the linkage piston and the hot water cavity, a cold water containing space formed by the linkage piston and the cold water cavity correspondingly increases, and the cold water outlet can communicate with the cold water containing space when the cold water containing space increases to a preset volume. The water outlet path and the hot water cavity have a hot water branch, the water inlet path and the heat exchange path are provided with a cold water branch for bypassing the cold water temporary storage device, the heating water path further comprises a first electromagnetic valve arranged on the cold water branch, a second electromagnetic valve arranged on the hot water branch and a control device, the control device can detect the water volume of the heating water path, and can switch the first electromagnetic valve and the second electromagnetic valve from a closed state to an open state when the water volume is in a preset water volume interval, and can switch the first electromagnetic valve and the second electromagnetic valve from the open state to the closed state when the water volume exceeds the preset water volume interval, wherein the preset water volume interval is smaller than a working water volume interval of the heating device.

2. The water heater of claim 1, wherein: The linkage piston can be driven by the water pressure of the water inlet path to increase the cold water containing space.

3. The water heater of claim 1, wherein: A one-way valve allowing hot water to flow out is arranged at the hot water outlet.

4. The water heater of claim 1, wherein: The linkage piston comprises a first piston acting on the hot water cavity and a second piston acting on the cold water cavity, wherein the diameter of the first piston is larger than that of the second piston.

5. The water heater of claim 1, wherein: The cold water temporary storage device and the hot water temporary storage device have a shared shell.

6. The water heater of claim 1, wherein: The heating device can maintain a combustion state after water is turned off until the water volume of the heating water path is lower than the preset water volume interval.

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