Combined control device for gas water heater and household appliance and method of use thereof

Abstract

The present application relates to the field of fluid heater with heat generating device, specifically to a combined control device of gas water heater and household appliance and its using method. The combined control device of gas water heater and household appliance comprises a casing (1), a water inlet pipe (21), a water outlet pipe (22) and a gas inlet pipe (3), characterized in that: it further comprises at least two electrical loads (6) and an electric controller module (7), each electrical load (6) is provided with a water inlet end and a water outlet end, and each electrical load (6) is provided with a load drain valve (42) on the water outlet end, and the water outlet end of the water outlet pipe (22) is connected to the water inlet end of each electrical load (6) through a branch water pipe (23) in series with a water solenoid valve (43). The using method of the combined control device of gas water heater and household appliance is characterized in that: the following steps are sequentially implemented: ① request; ② heating; ③ judgment. The present application is convenient to operate and has high automation degree.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fluid heater with heat generating device, in particular to a combined control device of gas water heater and household appliance and a using method thereof. BACKGROUND

[0002] The gas water heater has been widely used in the family, at the same time, there are many electrical loads in the family which need to provide hot water, such as dishwashers, washing machines, etc., usually using hot water can achieve better washing effect, but there is still lack of equipment to control the gas water heater and other electrical loads, each device uses independent water inlet system or heating system, which is inconvenient to control and wastes energy. SUMMARY

[0003] In order to overcome the defects of the prior art, provide a heating equipment which is convenient to control, convenient to operate, high degree of automation, strong adaptability and high energy utilization rate, the present application discloses a combined control device of gas water heater and household appliance and a using method thereof.

[0004] The present application achieves the purpose of the application through the following technical solutions:

[0005] A combined control device of gas water heater and household appliance, comprising a casing, a water inlet pipe, a water outlet pipe and a gas inlet pipe, the bottom of the casing is provided with an air inlet, and the top of the casing is provided with an air outlet, characterized in that: it further comprises at least two electrical loads and an electric control module,

[0006] The water outlet end of the water inlet pipe is connected to the water inlet end of the water outlet pipe, and the water outlet end of the water inlet pipe and the water inlet end of the water outlet pipe are arranged above the casing, a pressure relief valve and a water quantity sensor are sequentially connected in series on the water inlet pipe, a temperature sensor is arranged on the water outlet pipe, and at least two water taps are sequentially connected in series on the water outlet pipe,

[0007] Each electrical load is provided with a water inlet end and a water outlet end, and a load drain valve is arranged on the water outlet end of each electrical load, and the water outlet end of the water outlet pipe is connected to the water inlet end of each electrical load through a branch water pipe connected in series with a water electromagnetic valve,

[0008] The gas outlet end of the gas inlet pipe is arranged in the casing and below the water outlet end of the water inlet pipe, a flame nozzle is arranged on the gas outlet end of the gas inlet pipe, a gas main electromagnetic valve, a gas proportional valve and at least two gas switching electromagnetic valves are sequentially connected in series on the gas inlet pipe,

[0009] An air blower is arranged at the air inlet of the bottom of the casing, and a rotating speed sensor is arranged on the air blower,

[0010] The electric control module is embedded on the outer surface of the casing, and the casing is further provided with an ignition needle, a flameout protection device, an anti-idling device, an anti-overheating device, a temperature relay and a heat exchanger.

[0011] The combined control device of the gas water heater and the household appliance is characterized in that the device further comprises a remote controller connected to the electric control module through wireless signals.

[0012] The combined control device of the gas water heater and the household appliance is characterized in that the electric control module is selected from a single-chip microcomputer or an MCU chip.

[0013] The use method of the combined control device of the gas water heater and the household appliance is characterized in that the method is implemented in the following steps:

[0014] ① Request: an information table is stored in the electric control module, each record in the information table corresponds to an electric load, and each record comprises an identity code ID, a water temperature T0, a water volume V0 and a current water state S, the electric load sends a hot water request to the electric control module, the electric control module determines whether another electric load is currently using hot water, if yes, the electric load that sends the hot water request continues to wait, and if not, the method proceeds to step ②;

[0015] ② Heating: the electric load that sends the hot water request is defined as 0# electric load, the electric control module modifies the current water state S in the record corresponding to the 0# electric load in the information table to a use state, reads the water temperature T0 and the water volume V0 of the 0# electric load, and opens the water electromagnetic valve on the branch water pipe connected to the 0# electric load and the load drain valve of the 0# electric load, normal temperature water flows into the 0# electric load from the branch water pipe, and the smoke of the burned gas is discharged from the exhaust port at the top of the casing.

[0016] ③ Judgment: The temperature sensor measures the hot water temperature T in the water pipe in real time and inputs the temperature into the electric control module. The electric control module compares T and T0. If T < T0, the heating continues. If T ≥ T0, the electric control module closes the load drain valve of the 0# electrical load. Then, the water volume sensor starts measuring the water volume V output by the water inlet pipe and inputs the volume into the electric control module in real time. When V ≥ V0, the electric control module controls the gas main electromagnetic valve to be closed to cut off the gas supply and stop heating. At the same time, the water electromagnetic valve connected to the branch water pipe of the 0# electrical load is closed. The current water state S in the record corresponding to the 0# electrical load in the information table is modified to the non-use state. The electrical load stops receiving hot water and starts working.

[0017] When multiple electrical loads simultaneously send a request for hot water to the electric control module, the electric control module prioritizes the supply of hot water to the electrical load with a lower water temperature T0.

[0018] When the faucet is opened, the electric control module determines that there is a need for domestic hot water. The electric control module suspends the supply of hot water to each electrical load and returns to the set temperature of domestic hot water to provide domestic hot water through the faucet. After the faucet is closed, the electric control module determines that the use of domestic hot water is complete. The electric control module resumes the supply of hot water to each electrical load that was suspended.

[0019] The present application can work under the unified control of a gas water heater for various electrical loads that need to provide hot water. The present application has the following advantages: convenient control, easy operation, high automation, strong adaptability, and high energy utilization rate. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic diagram of the present application,

[0021] Figure 2 is a flowchart when the present application is used. DETAILED DESCRIPTION

[0022] The present application is further described below through specific examples.

[0023] Example 1

[0024] A combined control device of a gas water heater and a household appliance includes a casing, a water inlet pipe 21, a water outlet pipe 22, a gas inlet pipe 3, at least two electrical loads 6, and an electric control module 7, as shown in Figure 1 The specific structure is as follows:

[0025] The bottom of the casing is provided with an air inlet, and the top of the casing is provided with an air outlet,

[0026] The water outlet end of the water inlet pipe 21 is connected to the water inlet end of the water outlet pipe 22, and the water outlet end of the water inlet pipe 21 and the water inlet end of the water outlet pipe 22 are both arranged above the machine shell. The pressure relief valve 41 and the water volume sensor 51 are connected in series on the water inlet pipe 21. The temperature sensor 52 is arranged on the water outlet pipe 22. At least two water taps 221 are connected in series on the water outlet pipe 22,

[0027] Each electrical load 6 is provided with a water inlet end and a water outlet end. The load drain valve 42 is arranged on the water outlet end of each electrical load 6. The water outlet end of the water outlet pipe 22 is connected to the water inlet end of each electrical load 6 through the branch water pipe 23 connected in series with the water solenoid valve 43.

[0028] The gas inlet pipe 3 is arranged in the machine shell and below the water outlet end of the water inlet pipe 21. The gas inlet pipe 3 is provided with the flame nozzle 31 at the gas outlet end. The gas main solenoid valve 44, the gas proportional valve 45, and at least two gas switching solenoid valves 46 are connected in series on the gas inlet pipe 3.

[0029] The air blower 11 is arranged at the air inlet of the bottom of the machine shell. The rotational speed sensor 12 is arranged on the air blower 11.

[0030] The electronic control module 7 is embedded on the outer surface of the machine shell. The ignition needle 81, the flameout protection device 82, the anti-idling device 83, the anti-overheating device 84, the temperature relay 85, and the heat exchanger 86 are arranged in the machine shell. The ignition needle 81 is arranged directly above the gas outlet end of the gas inlet pipe 3. The heat exchanger 86 is sleeved on the water outlet end of the water inlet pipe 21 and the water inlet end of the water outlet pipe 22. The bottom of the heat exchanger 86 is opposite to the flame nozzle. The top of the heat exchanger 86 is connected to the air outlet of the top of the machine shell. The ignition needle 81, the flameout protection device 82, the anti-idling device 83, the anti-overheating device 84, the temperature relay 85, and each electrical load 6 are connected to the electronic control module 7 through signal lines. The electronic control module 7 is connected to the power supply 9 through wires.

[0031] The embodiment also includes the remote controller 10. The remote controller 10 is connected to the electronic control module 7 through wireless signals. The wireless signals are selected from infrared rays.

[0032] In the embodiment, the electronic control module 7 is selected from a single-chip microcomputer or an MCU chip.

[0033] When the embodiment is used, as shown in the figure, the following steps are implemented in sequence: Figure 2

[0034] ① Request: The electronic control module 7 stores an information table. Each record corresponding to each electrical load 6 is included in the information table. Each record includes the identity code ID corresponding to the electrical load 6, the water temperature T0, the water volume V0, and the current water state S. In the embodiment, the two electrical loads 6 are washing machines and dishwashers. The content of the information table is as follows: ​

[0035]

[0036] Information table description:

[0037] 1. 0010 is a washing machine, 0100 is a dishwasher,

[0038] 2. T0 unit is ℃, V0 unit is L,

[0039] 3. S takes 0 when it is not in use, and takes 1 when it is in use.

[0040] The electrical load 6 sends a hot water request to the electric controller module 7, and the electric controller module 7 determines whether there is another electrical load 6 currently using hot water, if yes, the electrical load 6 sending the hot water request continues to wait, if no, go to step ②.

[0041] ② Heating: Set the electrical load 6 sending the hot water request as 0# electrical load 6, the electric controller module 7 modifies the current water state S in the record corresponding to the 0# electrical load 6 in the information table to the use state, and reads the water temperature T0 and the water volume V0 of the 0# electrical load 6, the electric controller module 7 opens the water electromagnetic valve 43 on the branch water pipe 23 connected to the 0# electrical load 6 and the load drain valve 42 of the 0# electrical load 6, the normal temperature water is input into the casing from the water inlet pipe 21 along the arrow CW shown in the figure, Figure 1 the gas is input into the flame nozzle 31 in the casing from the gas inlet pipe 3 along the arrow G shown in the figure, Figure 1 the air is input into the casing from the air inlet at the bottom of the casing along the arrow A shown in the figure, the gas and the air are mixed and ignited by the ignition needle 81 at the flame nozzle 31, the flame 32 is sprayed from the flame nozzle 31 to heat the air, the hot air heats the normal temperature water in the water inlet pipe 21 through the heat exchanger 86, the normal temperature water is heated into hot water and flows out from the water outlet pipe 22 along the arrow HW shown in the figure and flows into the 0# electrical load 6 through the branch water pipe 23, Figure 1 the flue gas after the gas is burned is discharged from the exhaust port at the top of the casing along the arrow S shown in the figure. Figure 1 Figure 1

[0042] ​​③ Judgment: The temperature sensor 52 measures the hot water temperature T in the water pipe 22 in real time and inputs it into the electric control module 7. The electric control module 7 compares T and T0. If T < T0, heating continues. If T ≥ T0, the electric control module 7 closes the load drain valve 42 of the 0# electric load 6. Then the water volume sensor 51 starts measuring the water volume V output by the water inlet pipe 21 and inputs it into the electric control module 7 in real time. When V ≥ V0, the electric control module 7 controls the gas main electromagnetic valve 44 to close to cut off the gas supply and stop heating. At the same time, the water electromagnetic valve 43 connected to the branch water pipe 23 of the 0# electric load 6 is closed. The current water use state S in the record corresponding to the 0# electric load 6 in the information table is modified to the non-use state. The electric load 6 stops receiving hot water and starts working.

[0043] When multiple electric loads 6 simultaneously send hot water use requests to the electric control module 7, the electric control module 7 prioritizes supplying hot water to the electric load 6 with a lower water temperature T0.

[0044] When the faucet 221 is opened, the electric control module 7 determines that there is a need to use domestic hot water. The electric control module 7 suspends the hot water supply of each electric load 6 and returns to the set temperature of domestic hot water to provide domestic hot water through the faucet 221. After the faucet 221 is closed, the electric control module 7 determines that the use of domestic hot water is complete. The electric control module 7 restores the hot water supply of each electric load 6 that was suspended.

[0045] In this embodiment:

[0046] When the combustion flame sprayed by the flame nozzle 31 contacts the electrode of the flameout protection device 82 to generate a micro-current signal, the electric control module 7 determines that it is in a combustion state when there is a micro-current signal. When there is no micro-current signal, the electric control module 7 determines that it is in an extinguished state.

[0047] The high-temperature side of the heat exchanger 86 is provided with a temperature relay 85. In the normal temperature state, the temperature relay 85 is in a normally closed state. When the dry-running abnormality occurs, the high-temperature side of the heat exchanger instantaneously generates high temperature, causing the temperature relay 85 to actuate and become an open circuit. The electric control module 7 controls the summary to perform fault alarm.

Claims

1. A control method for a combined control device of a gas water heater and a household appliance, wherein the gas water heater includes a casing, an inlet pipe (21), an outlet pipe (22), and a gas inlet pipe (3), the bottom of the casing is provided with an air inlet, and the top of the casing is provided with an exhaust outlet, characterized in that: It also includes at least two electrical loads (6) and an electronic control module (7). The outlet end of the inlet pipe (21) is connected to the inlet end of the outlet pipe (22). The outlet ends of the inlet pipe (21) and the inlet ends of the outlet pipe (22) are both located at the top inside the casing. A pressure relief valve (41) and a water flow sensor (51) are connected in series on the inlet pipe (21). A temperature sensor (52) is installed on the outlet pipe (22). At least two faucets (221) are also connected in series on the outlet pipe (22). Each electrical load (6) has an inlet end and an outlet end. Each electrical load (6) has a load drain valve (42) on its outlet end. The outlet end of the outlet pipe (22) is connected to the inlet end of each electrical load (6) through a branch pipe (23) connected in series with a water solenoid valve (43). The outlet of the gas inlet pipe (3) is located inside the housing and below the outlet of the water inlet pipe (21). A flame nozzle (31) is provided on the outlet of the gas inlet pipe (3). A gas main solenoid valve (44), a gas proportional valve (45), and at least two gas switching solenoid valves (46) are connected in series on the gas inlet pipe (3). A blower (11) is installed at the air inlet at the bottom of the casing, and a speed sensor (12) is installed on the blower (11). The electronic controller module (7) is embedded on the outer surface of the casing. Inside the casing, there are also an ignition needle (81), a flameout protection device (82), an anti-dry burning device (83), an overheat protection device (84), a temperature relay (85), and a heat exchanger (86). The ignition needle (81) is located directly above the gas outlet of the gas inlet pipe (3). The heat exchanger (86) is fitted around the water outlet of the water inlet pipe (21) and the water inlet of the water outlet pipe (22). The bottom of the heat exchanger (86) faces the flame nozzle. The top of the heat exchanger (86) is connected to the exhaust port on the top of the casing. The ignition needle (81), the flameout protection device (82), the anti-dry burning device (83), the overheat protection device (84), the temperature relay (85), and each electrical load (6) are all connected to the electronic controller module (7) through signal lines. The electronic controller module (7) is connected to the casing through wires. Connect to power supply (9); characterized in that the control method includes: Follow these steps in sequence: ① Request: The information table stored in the controller module (7) consists of a record corresponding to each electrical load (6). Each record includes the identity code ID, water temperature T0, water consumption V0 and current water status S corresponding to this electrical load (6). The electrical load (6) sends a hot water use request to the controller module (7). The controller module (7) determines whether there are other electrical loads (6) currently using hot water. If so, the electrical load (6) that sent the hot water use request continues to wait. If not, proceed to step ②. ② Heating: Set the electrical load (6) that issues a request for hot water as the 0# electrical load (6). The electronic controller module (7) changes the current water usage status S in the record corresponding to the 0# electrical load (6) in the information table to the usage status, reads the water temperature T0 and water consumption V0 of the 0# electrical load (6). The electronic controller module (7) opens the water solenoid valve (43) on the branch water pipe (23) connecting to the 0# electrical load (6) and the load drain valve (42) of the 0# electrical load (6). Normal temperature water is input into the casing from the water inlet pipe (21), gas is input into the flame nozzle (31) inside the casing from the gas inlet pipe (3), air is sucked in by the blower (11) and input into the casing from the air inlet at the bottom of the casing. The gas and air are mixed at the flame nozzle (31) and the gas is ignited by the ignition pin (81). The flame (32) sprays out from the flame nozzle (31) to heat the air. The hot air heats the normal temperature water in the water inlet pipe (21) through the heat exchanger (86). After the normal temperature water is heated into hot water, it flows out from the water outlet pipe (22) and into the 0# electrical load (6) through the branch water pipe (23). The flue gas after gas combustion is discharged from the exhaust port at the top of the casing; ③ Judgment: The temperature sensor (52) measures the hot water temperature T in the water outlet pipe (22) in real time and inputs it into the electronic controller module (7). The electronic controller module (7) compares T and T0. If T < T0, continue heating. If T ≥ T0, the electronic controller module (7) closes the load drain valve (42) of the 0# electrical load (6). Subsequently, the water volume sensor (51) starts to measure the water volume V output from the water inlet pipe (21) and inputs it into the electronic controller module (7) in real time. When V ≥ V0, the electronic controller module (7) controls the main gas solenoid valve (44) to close to cut off the gas supply and stop heating. At the same time, it closes the water solenoid valve (43) on the branch water pipe (23) connecting to the 0# electrical load (6), changes the current water usage status S in the record corresponding to the 0# electrical load (6) in the information table to the unused status, and the electrical load (6) stops receiving hot water and starts to work; When multiple electrical loads (6) send requests for hot water to the electronic controller module (7) simultaneously, the electronic controller module (7) preferentially supplies hot water to the electrical load (6) with a lower water temperature T0; When the faucet (221) is opened, the electronic controller module (7) determines that there is a need for domestic hot water. The electronic controller module (7) pauses the hot water supply of each electrical load (6) and returns to the set temperature of domestic hot water to provide domestic hot water through the faucet (221). When the faucet (221) is closed, the electronic controller module (7) determines that the use of domestic hot water is completed, and the electronic controller module (7) resumes the hot water supply of each electrical load (6) that has been paused.

2. The control method of the combined control device for a gas water heater and a household appliance as described in claim 1, characterized in that: It also includes a remote controller (10), and the remote controller (10) is connected to the electronic controller module (7) through a wireless signal.

3. The control method of the combined control device for a gas water heater and a household appliance as described in claim 1 or 2, characterized in that: The electronic controller module (7) selects a single-chip microcomputer or an MCU chip.

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