CN219572299U - Temperature control device of electric water heater and electric water heater - Google Patents
Temperature control device of electric water heater and electric water heater Download PDFInfo
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- CN219572299U CN219572299U CN202321043753.1U CN202321043753U CN219572299U CN 219572299 U CN219572299 U CN 219572299U CN 202321043753 U CN202321043753 U CN 202321043753U CN 219572299 U CN219572299 U CN 219572299U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model discloses a temperature control device of an electric water heater, which comprises: the heating module is used for heating water in the inner container of the electric water heater; the first temperature control module is electrically connected with the heating module through external alternating current, wherein an external alternating current phase line is connected with the first temperature control module and the heating module; the second temperature control module is electrically connected with the first temperature control module. Through integrating two temperature control functions of temperature limiting and temperature control into two temperature control modules that are electrically connected respectively, realize in same temperature control circuit that the temperature information that starts heating and stop heating is obtained and action control for heating module's start and stop by one of them temperature control module direct control, other modules in the device still can normally work when heating module stops working, and its maintenance can be unified with other components that are used for temperature control after the limit temperature function electronization simultaneously has effectively reduced maintenance cost.
Description
Technical Field
The utility model relates to the technical field of household appliances, in particular to a temperature control device of an electric water heater and the electric water heater.
Background
The electric water heater in the prior art generally adopts a scheme of matching a front mechanical temperature limiter with an electronic temperature controller for temperature control, and the electronic temperature controller is generally provided with a temperature sensor for collecting the water temperature in the electric water heater so as to judge when the electric water heater needs to start heating, and the mechanical temperature limiter directly cuts off the power supply of elements related to temperature control when the water temperature in the electric water heater reaches a certain height.
On the basis of the scheme, if the heating upper limit of the water temperature is to be adjusted, the mechanical structure of the mechanical temperature limiter is required to be adjusted, the cost is high, the operation is troublesome, and in addition, if the mechanical temperature limiter is triggered, the power supply of other elements related to the temperature control is disconnected, so that the other elements related to the temperature control cannot continue to work normally.
Disclosure of Invention
The utility model provides a temperature control device of an electric water heater and the electric water heater.
The temperature control device of the electric water heater according to the embodiment of the utility model comprises:
the heating module is used for heating water in the inner container of the electric water heater;
the first temperature control module is electrically connected with the heating module through external alternating current, wherein the external alternating current phase line is connected with the first temperature control module and the heating module, and the first temperature control module is used for acquiring the water temperature in the inner container of the electric water heater to control the starting or stopping of the heating module and controlling the starting and stopping of the heating module according to the water temperature in the inner container of the electric water heater;
the second temperature control module is electrically connected with the first temperature control module and is used for obtaining the water temperature in the inner container of the electric water heater so as to control the stop or start of the heating module.
Therefore, the temperature control function and the temperature control function are integrated into the two temperature control modules which are electrically connected, the temperature information acquisition and the action control for starting and stopping heating are realized in the same temperature control circuit, the starting and stopping of the heating module are directly controlled by one of the temperature control modules, other modules in the device can still normally work when the heating module stops working, and meanwhile, the maintenance of the temperature control function can be uniformly performed with other elements for temperature control after the temperature control function is electronized, so that the maintenance cost is effectively reduced.
In some embodiments, the first temperature control module includes a temperature limiting sensing sub-module, a first main control chip and a relay sub-module, where the temperature limiting sensing sub-module is electrically connected with the first main control chip, and the temperature limiting sensing sub-module is used to provide temperature information for the first main control chip to control the heating module to stop;
the relay sub-module is electrically connected with the first main control chip and is electrically connected with the heating module through the exogenous alternating current phase line, and the relay sub-module is used for controlling the starting and stopping of the heating module according to the electric signal sent by the first main control chip.
Therefore, the temperature limiting sensing sub-module can be used for acquiring the temperature value for stopping the heating module, and the first temperature control module provided with the first main control chip and the relay sub-module is used for directly controlling the starting and stopping of the heating module, so that the reliability of acquiring the water temperature in the inner container of the electric water heater is improved by independently modularizing the temperature limiting function.
In some embodiments, the relay sub-module includes a first relay element group, the first relay element group includes a first relay, a control circuit of the first relay is connected to the first main control chip, an input end of a working circuit of the first relay is connected to the exogenous alternating current phase line port, and an output end of the working circuit of the first relay is connected to the heating module.
Therefore, the utility model can control the starting and stopping of the heating module through the relay connected with the first main control chip.
In some embodiments, the first relay element group further includes a first switching tube, a second switching tube, and a first gate circuit, the input ends of the first switching tube and the second switching tube are both connected to the first main control chip, the output end of the first switching tube is connected to the first input end of the first gate circuit, the output end of the second switching tube is connected to the second input end of the first gate circuit, and the output end of the first gate circuit is connected to the control circuit of the first relay.
Therefore, the utility model can improve the reliability of the control of the relay through the arrangement of the two groups of switch tubes and the gate circuit, and avoid the problem of failure of the whole circuit caused by single-line faults.
In some embodiments, the first gate is an and gate.
Therefore, the utility model can enable the corresponding relay control circuit to be effective only when the two groups of switch tubes simultaneously meet the conditions of the switch tubes through the arrangement of the AND gate.
In some embodiments, the relay sub-module further includes a second relay element group, the second relay element group includes a second relay, a control circuit of the second relay is connected to the first main control chip, an output end of a working circuit of the second relay is connected to the neutral line port of the external ac power, and an input end of the working circuit of the second relay is connected to the heating module.
Therefore, the utility model controls the starting and stopping of the heating module by arranging the first main control chip to connect with the relay, and can improve the reliability of the control of the heating module by simultaneously arranging two groups of relays.
In some embodiments, the second relay element group further includes a third switching tube, a fourth switching tube and a second gate circuit, the input ends of the third switching tube and the fourth switching tube are all connected with the first main control chip, the output end of the third switching tube is connected with the first input end of the second gate circuit, the output end of the fourth switching tube is connected with the second input end of the second gate circuit, and the output end of the second gate circuit is connected with the control circuit of the second relay.
Therefore, the utility model can improve the reliability of the control of the relay through the arrangement of the two groups of switch tubes and the gate circuit, and avoid the problem of failure of the whole circuit caused by single-line faults.
In some embodiments, the second gate is an and gate.
Therefore, the utility model can enable the corresponding relay control circuit to be effective only when the two groups of switch tubes simultaneously meet the conditions of the switch tubes through the arrangement of the AND gate.
In some embodiments, the second temperature control module includes a temperature control sensing sub-module and a second main control chip, the temperature control sensing sub-module is electrically connected with the second main control chip, the second main control chip is electrically connected with the first main control chip, the temperature control sensing sub-module is used for providing temperature information for the second main control chip for controlling the start of the heating module, and the second main control chip is used for forwarding the temperature information for controlling the start of the heating module or an electrical signal determined according to the temperature information for controlling the start of the heating module to the first main control chip.
Therefore, the temperature information for controlling the starting of the heating module can be obtained through the second temperature control module, and the second main control chip is communicated with the first main control chip, so that the first temperature control module controls the starting of the heating module, and meanwhile, the reliability of obtaining the water temperature in the inner container of the electric water heater is improved through independent modularization of the temperature control function.
The utility model also provides an electric water heater, which comprises the electric water heater temperature control device in any embodiment.
Additional aspects and advantages of embodiments of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of a temperature control device of an electric water heater according to the present utility model;
fig. 2 is a schematic structural diagram of a temperature control device of an electric water heater according to an embodiment of the present utility model;
fig. 3 is a schematic structural diagram of a temperature control device of an electric water heater according to an embodiment of the present utility model;
fig. 4 is a schematic structural diagram of a temperature control device of an electric water heater according to an embodiment of the present utility model;
fig. 5 is a schematic structural diagram of a temperature control device of an electric water heater according to an embodiment of the present utility model;
wherein: 1. a heating module; 2. a first temperature control module; 21. a temperature limiting sensing sub-module; 22. a first main control chip; 23. a relay sub-module; 231. a first relay element group; 232. a second relay element group; 3. a second temperature control module; 31. a temperature control sensing sub-module; 32. and the second main control chip.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the embodiments of the present utility model and are not to be construed as limiting the embodiments of the present utility model.
As shown in fig. 1, the present utility model provides a temperature control device for an electric water heater, comprising:
the heating module 1 is used for heating water in the inner container of the electric water heater;
the first temperature control module 2 is electrically connected with the heating module 1 through external alternating current, wherein an external alternating current phase line is connected with the first temperature control module 2 and the heating module 1, and the first temperature control module 2 is used for acquiring the water temperature in the inner container of the electric water heater to control the starting or stopping of the heating module 1 and controlling the starting and stopping of the heating module 1 according to the water temperature in the inner container of the electric water heater;
the second temperature control module 3 is electrically connected with the first temperature control module 2, and is used for obtaining the water temperature in the inner container of the electric water heater so as to control the stop or start of the heating module 1.
Specifically, the temperature control device of the electric water heater provided by the utility model does not comprise a mechanical temperature limiter in the related art, but integrates the temperature limiting function and the temperature control function into two temperature control modules respectively, realizes communication in an electric connection mode, and further respectively completes the acquisition of the water temperature for controlling the starting of the heating module 1 and the acquisition of the water temperature for controlling the stopping of the heating module 1 through two groups of mutually independent modules. In addition, through setting up two mutually independent and mutually connected temperature control modules, electric water heater temperature regulating device can realize the acquisition to temperature information mutually independently, also can be through directly carrying out circuit structure or circuit parameter's adjustment to corresponding module to the adjustment to the relevant parameter of acquisition simultaneously realize, compare in the scheme of means such as adjusting the mechanical structure of temperature limiter even changing temperature limiter of other specifications when adopting mechanical temperature limiter among the correlation technique, temperature regulating device's maintenance and maintenance are more convenient.
In addition, the first temperature control module 2 and the heating module 1 are connected in series on the phase line and the neutral line of the external alternating current together, that is, a series relationship is formed on the loop of the external alternating current. In some examples, in the case that the first temperature control module 2 or the second temperature control module 3 acquires an electrical signal for controlling the heating module 1 to stop, the first temperature control module 2 turns off the external ac power circuit by turning off at least one of the external ac power phase line and the external ac power neutral line, thereby achieving the control of the heating module 1 to stop. In other examples, in a case where the first temperature control module 2 or the second temperature control module 3 obtains an electrical signal for controlling the start of the heating module 1, the first temperature control module 2 switches on the external ac circuit by switching on the external ac phase line and the external ac neutral line, thereby realizing the start control of the heating module 1. Therefore, even if the first temperature control module 2 controls the heating module 1 to stop working, the temperature control device can still control the heating module 1 to start again through the first temperature control module 2 under the condition that an electric signal for controlling the starting of the heating module 1 is obtained, compared with the prior art that a front mechanical temperature limiter is adopted, and the heating module 1 is stopped in a mode of directly mechanically powering off when the temperature is limited, the scheme is more flexible, and the original power supply working state of each component for controlling the water temperature is ensured.
Therefore, the temperature control functions of temperature limitation and temperature control are integrated into the two temperature control modules which are electrically connected, the temperature information acquisition and the action control for starting and stopping heating are realized in the same temperature control circuit, the starting and stopping of the heating module 1 are directly controlled by one of the temperature control modules, other modules in the device can still work normally when the heating module 1 stops working, and meanwhile, the maintenance of the temperature control function after the temperature control function is electronized can be uniformly performed with other elements for temperature control, so that the maintenance cost is effectively reduced.
As shown in fig. 2, in some embodiments, the first temperature control module 2 includes a temperature limiting sensing sub-module 21, a first main control chip 22, and a relay sub-module 23, where the temperature limiting sensing sub-module 21 is electrically connected to the first main control chip 22, and the temperature limiting sensing sub-module 21 is configured to provide temperature information for the first main control chip 22 to control the heating module 1 to stop;
the relay sub-module 23 is electrically connected with the first main control chip 22 and is electrically connected with the heating module 1 through an external alternating current phase line, and the relay sub-module 23 is used for controlling the starting and stopping of the heating module 1 according to an electric signal sent by the first main control chip 22.
Specifically, the temperature limiting sensing sub-module 21 can obtain the water temperature in the inner container of the electric water heater and convert the water temperature into an electric signal, the electric signal is sent to the first main control chip 22, and the first main control chip 22 receives the electric signal for representing the water temperature from the temperature limiting sensing sub-module 21 and analyzes and processes the electric signal, so that whether the heating module 1 needs to be controlled to stop working under the current temperature condition can be determined. For example, when the current water temperature is higher than or equal to the temperature line for stopping heating the water in the inner container, the first main control chip 22 determines that the operation of the heating module 1 needs to be stopped under the current temperature condition.
After the first main control chip 22 analyzes the electric signal for representing the water temperature sent by the temperature limiting sensor sub-module, a control electric signal can be obtained, and then the first main control chip 22 sends the control electric signal to the relay sub-module 23, so that the relay sub-module 23 controls the stop of the heating module 1 according to the control electric signal, specifically, controls the connection and disconnection between the first main control chip and the heating module 1 according to the content of the control electric signal to control the stop of the heating module 1. For example, the control electric signal sent by the first main control chip 22 indicates that the running heating module 1 needs to be stopped currently, and the relay sub-module 23 controls to disconnect itself from the heating module 1, so that the heating module 1 stops working.
In addition, the water temperature information acquired by the second temperature control module 3 and used for controlling the starting of the heating module 1 is transmitted back to the first temperature control module 2 through the electric connection, so that the first temperature control module 2 can conveniently control the starting of the heating module 1, the second temperature control module 3 is connected with the first temperature control module 2 through the first main control chip 22, the water temperature information acquired by the second temperature control module 3 and used for controlling the starting of the heating module 1 is conveniently transmitted to the first main control chip 22, and the first main control chip 22 can conveniently analyze and process the water temperature information and send out control electric signals, so that the heating module 1 is controlled to start. For example, the control electric signal sent by the first main control chip 22 indicates that the heating module 1 needs to be started currently, and the relay sub-module 23 controls the relay sub-module to be connected with the heating module 1, so that the heating module 1 starts to work.
In this way, the temperature value for stopping the heating module 1 can be obtained by the temperature limiting sensing sub-module 21, meanwhile, the starting and stopping of the heating module 1 can be directly controlled by the first temperature control module 2 provided with the first main control chip 22 and the relay sub-module 23, and the reliability of obtaining the water temperature in the inner container of the electric water heater is improved by independently modularizing the temperature limiting function.
As shown in fig. 2, in some embodiments, the relay sub-module 23 includes a first relay element group 231, the first relay element group 231 includes a first relay, a control circuit of the first relay is connected to the first main control chip 22, an input end of a working circuit of the first relay is connected to an external ac phase line port, and an output end of the working circuit of the first relay is connected to the heating module 1.
Specifically, one or more relay element groups can be set in the relay sub-module 23, and the heating module 1 can be started and stopped most simply by adopting a single relay element group to control the heating module 1, and the control reliability can be improved by adopting a plurality of relay element groups to control the heating module 1, so that the situation that a relay is always on due to the damage of a specific element is avoided, and the abnormal starting state of the heating module 1 is blocked in time. Because the normal operation voltage of the heating module 1 is driven by the external 220V ac and is far higher than the voltage from a few millivolts to a few volts in the electronic circuit, in order to safely control the starting and stopping of the heating module 1 according to the control electric signal of the first main control chip 22, a relay needs to be arranged in the relay element group, that is, the relatively tiny electric signal sent by the first main control chip 22 can enter the control circuit through the relay, and the result of the control circuit drives the working circuit connected with the external ac and the heating module 1, so as to control the heating module 1 driven by the external ac, and meanwhile, the influence of the excessive voltage on the normal operation of the electronic circuit is avoided.
Next, an example will be described in which one first relay element group 231 is provided in the relay sub-module 23. In some examples, a first relay is disposed in the first relay element group 231, a control circuit of the first relay is controlled by the first main control chip 22, a working circuit is connected in series with a phase line of the external alternating current, and a heating module 1 is connected between the phase line and a neutral line of the external alternating current. In the case that the temperature corresponding to the electric signal sent by the temperature limiting sensing sub-module 21 and used for controlling the heating module 1 to stop is higher than or equal to the temperature line where the heating module 1 stops working, the first main control chip 22 generates a control electric signal according to the electric signal and sends the control electric signal to the control circuit of the first relay, so that the control circuit of the first relay is driven to work, the working circuit of the first relay is disconnected, and the external alternating current loop is disconnected, so that the heating module 1 stops.
Thus, the utility model can control the starting and stopping of the heating module 1 by connecting the relay with the first main control chip 22.
As shown in fig. 4, in some embodiments, the first relay element group 231 further includes a first switch tube, a second switch tube, and a first gate circuit, the input ends of the first switch tube and the second switch tube are both connected to the first main control chip 22, the output end of the first switch tube is connected to the first input end of the first gate circuit, the output end of the second switch tube is connected to the second input end of the first gate circuit, and the output end of the first gate circuit is connected to the control circuit of the first relay.
Specifically, in order to make the reliability of the first main control chip 22 for controlling the first relay control circuit higher, a plurality of logic conditions may be added between the first main control chip 22 and the control circuit of the first relay, and the logic conditions may be checked by the logic gate circuit, and the circuit is turned on when the logic conditions are satisfied so that the first main control chip 22 can send the control electric signal to the control circuit of the first relay.
For example, in some examples, in the first relay element group 231, after the control electrical signals are led out by the first main control chip 22, the control electrical signals are respectively input into the first switch tube and the second switch tube, the same or different logic circuits are respectively arranged inside the first switch tube and the second switch tube, the control electrical signals are output in two groups after passing through the logic circuits inside the two groups of switch tubes, the outputs of the two groups of switch tubes are connected into the first gate circuit, the first gate circuit is a logic gate circuit and is used for performing logic operation on the input electrical signals, and only when the two groups of electrical signals input into the first gate circuit meet preset logic conditions, the electrical signals output by the logic gate circuit can drive the effective control electrical signals of the first relay control circuit.
For example, on the basis of the above embodiment, after the first main control chip 22 receives the electrical signal sent by the temperature limiting sensing sub-module 21 and performs analysis and processing, it is determined that the heating module 1 needs to be stopped at the current temperature, at this time, the first main control chip 22 generates a control electrical signal according to the analysis and processing result of the electrical signal, and sends the control electrical signal to the first switching tube and the second switching tube respectively, the first switching tube and the second switching tube process the received control electrical signal and then connect the output signal to the first gate circuit, the first gate circuit performs logic operation on the two electrical signals connected thereto, and under the condition that the two electrical signals connected thereto meet the preset logic condition, the control circuit of the first relay receives the effective control electrical signal and controls to operate, so that the operating circuit of the first relay is turned off, the heating module 1 breaks away from the external ac circuit, and the heating module 1 stops.
Therefore, the utility model can improve the reliability of the control of the relay through the arrangement of the two groups of switch tubes and the gate circuit, and avoid the problem of failure of the whole circuit caused by single-line faults.
In some embodiments, the first gate is an and gate, as shown in fig. 4.
Specifically, in order to make the reliability as higher as possible, an and gate is generally selected for the selection of the first gate circuit, which is intended to indicate that the outputs of the first switching tube and the second switching tube must meet the preset condition at the same time. The preset condition is determined by the logic circuit structure of the switching tube. However, the output level of the first gate circuit is not limited, and the component structures of the switching tube, the gate circuit and the relay control circuit may be adjusted according to actual situations.
Therefore, the utility model can enable the corresponding relay control circuit to be effective only when the two groups of switch tubes simultaneously meet the conditions of the switch tubes through the arrangement of the AND gate.
As shown in fig. 3, the relay sub-module 23 further includes a second relay element group 232, the second relay element group 232 includes a second relay, a control circuit of the second relay is connected to the first main control chip 22, an output end of a working circuit of the second relay is connected to an external ac neutral line port, and an input end of the working circuit of the second relay is connected to the heating module 1.
Specifically, the above embodiment has already described the scheme of directly controlling the relay control circuit by the first main control chip 22 through one relay element group, and will not be described herein.
In addition, in order to further improve the reliability of the control of the start and stop of the heating module 1, one more second relay element group 232 may be provided in addition to the first relay element group 231. In some examples, the second relay element group 232 also includes a second relay, and the first main control chip 22 is directly connected to the control circuit of the second relay, and the working circuit of the second relay is connected in series with the heating module 1 on the neutral line of the external ac circuit. In this way, the phase line is led in, the first relay working circuit, the heating module 1 and the second relay working circuit are connected in series, and then led out from the neutral line to form a complete loop of the external alternating current together.
In the case where the first relay element group 231 and the second relay element group 232 are provided together, the first main control chip 22 connects the control circuit of the first relay and the control circuit of the second relay at the same time. On the basis of the above embodiment, if the first main control chip 22 determines that the heating module 1 needs to be stopped currently according to the temperature corresponding to the electric signal sent by the temperature limiting sensing sub-module 21 and used for controlling the heating module 1 to stop, the first main control chip 22 generates a control electric signal and sends the control electric signal to the control circuit of the first relay and the control circuit of the second relay at the same time, the working circuit of the first relay and the working circuit of the second relay are controlled to be disconnected, and the heating module 1 stops. If one of the first relay and the second relay is damaged, so that the working circuit is in a normally-on state, the other relay can still be disconnected, the external alternating current loop can be disconnected, and the heating module 1 is stopped. Therefore, when the single-side relay is damaged and is always communicated, the heating module 1 can still be stopped by turning off the relay at the other side, and dangerous situations caused by long-time heating due to failure are avoided.
Thus, the utility model controls the starting and stopping of the heating module 1 by arranging the first main control chip 22 to connect with the relay, and can improve the reliability of the control of the heating module 1 by simultaneously arranging two groups of relays.
As shown in fig. 5, in some embodiments, the second relay element group 232 further includes a third switching tube, a fourth switching tube, and a second gate circuit, wherein the input ends of the third switching tube and the fourth switching tube are connected to the first main control chip 22, the output end of the third switching tube is connected to the first input end of the second gate circuit, the output end of the fourth switching tube is connected to the second input end of the second gate circuit, and the output end of the second gate circuit is connected to the control circuit of the second relay.
Specifically, for the second relay element group 232, in order to make the reliability of the control of the relay control circuit by the first main control chip 22 higher, as with the first relay element group 231, a plurality of logic conditions may be added between the first main control chip 22 and the control circuit of the relay, and the logic conditions may be checked by a logic gate circuit, and the circuit may be turned on to enable the first main control chip 22 to transmit a control electric signal to the control circuit of the relay if the logic conditions are satisfied. The connection mode and the logic effect of the third switch tube, the fourth switch tube and the second gate circuit are the same as those of the first switch tube, the second switch tube and the first gate circuit in the first relay element group 231, and are not described herein.
In addition, for the case that the first relay element group 231 and the second relay element group 232 are simultaneously disposed, the first relay in the first relay element group 231 and the second relay in the second relay element group 232 are necessary elements for directly controlling the on/off of the external ac circuit and the start and stop of the heating module 1, and the first, second, third, fourth switching tubes and the first and second gate circuits are used for improving the reliability of the control of the corresponding relay control circuits of the first main control chip 22 in the corresponding relay element groups, and whether the relay control circuits are disposed or not can be adjusted according to the actual situation. Fig. 3 and 5 schematically show the case where neither the first relay element group 231 nor the second relay element group 232 is provided with a switching transistor and gate circuit, and the case where both the switching transistor and gate circuits are provided, and other cases may be determined according to actual situations.
Therefore, the utility model can improve the reliability of the control of the relay through the arrangement of the two groups of switch tubes and the gate circuit, and avoid the problem of failure of the whole circuit caused by single-line faults.
In some embodiments, the second gate circuit is an and gate, as shown in fig. 5.
In particular, in order to be able to make the reliability as high as possible, an and gate is generally selected for the selection of the second gate circuit, which is intended to mean that the outputs of the third switching tube and the fourth switching tube must meet preset conditions simultaneously. The preset condition is determined by the logic circuit structure of the switching tube. However, the output level of the second gate circuit is not limited, and the component structures of the switching transistor, the gate circuit, and the relay control circuit may be adjusted according to actual conditions.
Therefore, the utility model can enable the corresponding relay control circuit to be effective only when the two groups of switch tubes simultaneously meet the conditions of the switch tubes through the arrangement of the AND gate.
As shown in fig. 5, in some embodiments, the second temperature control module 3 includes a temperature control sensing sub-module 31 and a second main control chip 32, the temperature control sensing sub-module 31 is electrically connected with the second main control chip 32, the second main control chip 32 is electrically connected with the first main control chip 22, the temperature control sensing sub-module 31 is used for providing temperature information for controlling the start of the heating module 1 to the second main control chip 32, and the second main control chip 32 is used for forwarding temperature information for controlling the start of the heating module 1 or an electrical signal determined according to the temperature information for controlling the start of the heating module 1 to the first main control chip 22.
Specifically, for the second temperature control module 3, in the case where the first temperature control module 2 is responsible for acquiring the water temperature information for controlling the stop of the heating module 1, the second temperature control module 3 is responsible for acquiring the water temperature information for controlling the start of the heating module 1. In order to stably acquire the above water temperature information, the second temperature control module 3 is provided with a temperature control sensing sub-module 31 for directly converting the water temperature in the inner container of the electric water heater into an electric signal. In order to analyze and process the electrical signals more stably, a second main control chip 32 is separately and matched with the temperature control sensing sub-module 31 in the second temperature control module 3, and the second main control chip 32 is directly and electrically connected with the temperature control sensing sub-module 31 to receive the water temperature information acquired by the temperature control sensing sub-module 31. The temperature control device controls the starting and stopping of the heating module 1 through the first temperature control module 2, so that communication is needed between the second temperature control module 3 and the first temperature control module 2. For the selection of various communications, in some examples, the second main control chip 32 is connected to the first main control chip 22 in the first temperature control module 2, and the connection may be implemented by a serial port communication line or a connection manner for information transmission between ports. Such a connection may be provided in at least two ways when controlling the activation of the heating module 1:
one of them is that the second main control chip 32 analyzes and processes the electric signal representing the water temperature obtained by the temperature control sensing sub-module 31 to obtain a control electric signal for controlling the starting of the heating module 1, then the second main control chip 32 sends the control electric signal to the first main control chip 22 through the communication connection with the first main control chip 22, and then the first main control chip 22 directly controls the starting of the heating module 1 through the control relay sub-module 23 according to the control electric signal. The mode can enable the determination process of the control electric signals by the two groups of chips to be mutually independent, and improves the operation reliability.
And secondly, the second main control chip 32 directly forwards the electric signal which is acquired by the temperature control sensing sub-module 31 and represents the water temperature to the first main control chip 22, and the first main control chip 22 analyzes and processes the electric signal to determine a control electric signal, so as to further control the starting of the heating module 1. This allows the first main control chip 22 to be used to the maximum extent, reserving processing space for other functions of the second main control chip 32.
Therefore, the temperature information for controlling the starting of the heating module 1 can be obtained through the second temperature control module 3, and the second main control chip 32 is communicated with the first main control chip 22, so that the first temperature control module 2 controls the starting of the heating module 1, and meanwhile, the reliability of obtaining the water temperature in the inner container of the electric water heater is improved through independent modularization of the temperature control function.
The utility model also provides an electric water heater, which comprises the electric water heater temperature control device in any one of the embodiments.
In the description of the present specification, reference to the terms "certain embodiments," "in one example," "illustratively," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiments or examples is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present utility model in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present utility model.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
Claims (10)
1. A temperature control device for an electric water heater, the device comprising:
the heating module is used for heating water in the inner container of the electric water heater;
the first temperature control module is electrically connected with the heating module through external alternating current, wherein the external alternating current phase line is connected with the first temperature control module and the heating module, and the first temperature control module is used for acquiring the water temperature in the inner container of the electric water heater to control the starting or stopping of the heating module and controlling the starting and stopping of the heating module according to the water temperature in the inner container of the electric water heater;
the second temperature control module is electrically connected with the first temperature control module and is used for obtaining the water temperature in the inner container of the electric water heater so as to control the stop or start of the heating module.
2. The device of claim 1, wherein the first temperature control module comprises a temperature limiting sensing sub-module, a first main control chip and a relay sub-module, the temperature limiting sensing sub-module is electrically connected with the first main control chip, and the temperature limiting sensing sub-module is used for providing temperature information for the first main control chip for controlling the heating module to stop;
the relay sub-module is electrically connected with the first main control chip and is electrically connected with the heating module through the exogenous alternating current phase line, and the relay sub-module is used for controlling the starting and stopping of the heating module according to the electric signal sent by the first main control chip.
3. The device of claim 2, wherein the relay sub-module comprises a first relay element group, the first relay element group comprises a first relay, a control circuit of the first relay is connected with the first main control chip, an input end of a working circuit of the first relay is connected with the exogenous alternating current phase line port, and an output end of the working circuit of the first relay is connected with the heating module.
4. The device of claim 3, wherein the first relay element group further comprises a first switch tube, a second switch tube and a first gate circuit, wherein the input ends of the first switch tube and the second switch tube are connected with the first main control chip, the output end of the first switch tube is connected with the first input end of the first gate circuit, the output end of the second switch tube is connected with the second input end of the first gate circuit, and the output end of the first gate circuit is connected with the control circuit of the first relay.
5. The apparatus of claim 4, wherein the first gate is an and gate.
6. The device of claim 2, wherein the relay sub-module further comprises a second relay element group, the second relay element group comprises a second relay, a control circuit of the second relay is connected with the first main control chip, an output end of a working circuit of the second relay is connected with the neutral line port of the external alternating current, and an input end of the working circuit of the second relay is connected with the heating module.
7. The device of claim 6, wherein the second relay element group further comprises a third switching tube, a fourth switching tube and a second gate circuit, wherein the input ends of the third switching tube and the fourth switching tube are connected with the first main control chip, the output end of the third switching tube is connected with the first input end of the second gate circuit, the output end of the fourth switching tube is connected with the second input end of the second gate circuit, and the output end of the second gate circuit is connected with the control circuit of the second relay.
8. The apparatus of claim 7, wherein the second gate circuit is an and gate.
9. The device of claim 2, wherein the second temperature control module comprises a temperature control sensing sub-module and a second main control chip, the temperature control sensing sub-module is electrically connected with the second main control chip, the second main control chip is electrically connected with the first main control chip, the temperature control sensing sub-module is used for providing temperature information for controlling the start of the heating module to the second main control chip, and the second main control chip is used for forwarding the temperature information for controlling the start of the heating module or an electrical signal determined according to the temperature information for controlling the start of the heating module to the first main control chip.
10. An electric water heater, characterized in that it comprises an electric water heater temperature control device according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321043753.1U CN219572299U (en) | 2023-04-28 | 2023-04-28 | Temperature control device of electric water heater and electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321043753.1U CN219572299U (en) | 2023-04-28 | 2023-04-28 | Temperature control device of electric water heater and electric water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219572299U true CN219572299U (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321043753.1U Active CN219572299U (en) | 2023-04-28 | 2023-04-28 | Temperature control device of electric water heater and electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219572299U (en) |
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2023
- 2023-04-28 CN CN202321043753.1U patent/CN219572299U/en active Active
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