A water heater

Abstract

The application relates to a water heater, which comprises a water tank, a water tank temperature sensor arranged on the water tank, a wiring board for connecting an external power supply, a controller connected with the water tank temperature sensor and the wiring board respectively, an electric heating device connected with the controller, a control switch connected with the wiring board, and a temperature controller connected with the control switch and the electric heating device respectively, so that when the controller or the water tank temperature sensor is abnormal, the temperature controller can control the electric heating device to heat water, the reliability of the water heater is improved, and the hot water demand of a user can be quickly solved.

Description

Technical Field

[0001] This application relates to the field of water heater technology, and in particular to a water heater. Background Technology

[0002] In existing water heaters, if the internal controller or water tank temperature sensor malfunctions, it will be unable to heat the water in the tank, resulting in low reliability. Utility Model Content

[0003] Therefore, it is necessary to provide a water heater that improves the reliability of water heaters.

[0004] In a first aspect, this application provides a water heater, comprising:

[0005] Water tank;

[0006] A water tank temperature sensor is installed on the water tank and is used to detect the water temperature inside the tank.

[0007] A junction box for connecting to an external power source;

[0008] The controller is connected to the water tank temperature sensor and the terminal block, respectively.

[0009] An electric heating device, connected to a controller, is used to heat the water in the water tank.

[0010] Control switch, connect to terminal block;

[0011] The thermostat is connected to both the control switch and the electric heating device.

[0012] In one embodiment, the control switch is a circuit breaker.

[0013] In one embodiment, the circuit breaker is a normally open circuit breaker.

[0014] In one embodiment, the thermostat includes a temperature control body and a temperature sensing device, wherein the temperature control body is connected to the temperature sensing device and a control switch, and the temperature sensing device is used to detect the water temperature in the water tank.

[0015] In one embodiment, the thermostat is a volumetric thermostat.

[0016] In one embodiment, the water heater further includes:

[0017] The temperature protector is connected to the controller, the thermostat, and the electric heating device, respectively.

[0018] In one embodiment, the temperature protector includes a temperature sensing device and a switching device, wherein the switching device is connected to the temperature sensing device, the controller, the thermostat, and the electric heating device, respectively.

[0019] In one embodiment, the water heater further includes:

[0020] The heat exchange system, connected to the controller, is used to heat the water in the water tank.

[0021] In one embodiment, the water heater further includes:

[0022] Control panel, connected to the controller.

[0023] In one embodiment, the control panel is provided with a display device for displaying the operating status of the water heater.

[0024] The aforementioned water heater includes a water tank, a water tank temperature sensor mounted on the water tank, a terminal block for connecting to an external power source, a controller connecting the water tank temperature sensor and the terminal block, an electric heating device connected to the controller, a control switch connected to the terminal block, and a thermostat connecting the control switch and the electric heating device. The controller receives the water temperature detected by the water tank temperature sensor and controls the electric heating device to heat the water in the tank. Simultaneously, when the control switch is closed, the thermostat also controls the electric heating device to heat the water in the tank. This application, by adding a control switch and a thermostat to the water heater, allows the thermostat to control the electric heating device to produce hot water when the controller or water tank temperature sensor malfunctions, thereby improving the reliability of the water heater and quickly meeting the user's hot water needs. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a structural block diagram of a water heater in one embodiment;

[0027] Figure 2 This is a structural block diagram of the water heater in another embodiment;

[0028] Figure 3 This is a connection diagram of the water heater in one embodiment;

[0029] Figure 4 This is a schematic diagram of the structure of a water heater in one embodiment. Detailed Implementation

[0030] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0032] It is understood that the terms "first," "second," etc., used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0033] It is understood that the term "connection" in the following embodiments should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have electrical signal or data transmission with each other.

[0034] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that terms such as “comprising / including” or “having” specify the presence of the stated features, integrals, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, integrals, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.

[0035] Currently, in existing water heaters, if the internal controller or water tank temperature sensor malfunctions, the controller cannot control the electric heating device to heat the water in the tank, thus failing to guarantee the user's hot water needs and resulting in low reliability of the water heater.

[0036] This application provides a water heater that adds a control switch and a thermostat to a traditional water heater. The water heater includes a water tank, a water tank temperature sensor mounted on the water tank, a terminal block for connecting to an external power source, a controller connected to the water tank temperature sensor and the terminal block, an electric heating device connected to the controller, a control switch connected to the terminal block, and a thermostat connected to the control switch and the electric heating device. By adding a control switch and a thermostat to the water heater, and utilizing the existing components of the water heater, the thermostat can control the electric heating device to produce hot water when the controller or the water tank temperature sensor malfunctions. This method is simple to operate, low in cost, improves the reliability of the water heater, and can quickly meet the user's hot water needs.

[0037] In one exemplary embodiment, such as Figure 1 As shown, this application provides a water heater, including:

[0038] Water tank;

[0039] A water tank temperature sensor 110 is installed on the water tank and is used to detect the water temperature inside the water tank.

[0040] Terminal block 120 is used to connect an external power source;

[0041] The controller 130 is connected to the water tank temperature sensor 110 and the terminal block 120 respectively;

[0042] An electric heating device 140 is connected to a controller 130. The electric heating device 140 is used to heat the water in the water tank.

[0043] Control switch 150, connection terminal block 120;

[0044] The thermostat 160 is connected to the control switch 130 and the electric heating device 140.

[0045] The type and settings of the external power supply can be set according to the actual situation. In this embodiment, no limitation is made, as long as it can meet the power supply requirements of the controller and the temperature controller.

[0046] Specifically, such as Figure 1As shown, during normal operation of the water heater, the water tank temperature sensor 110 installed on the water tank is used to detect the water temperature in the tank and transmit the water temperature to the controller 130. The controller 130 responds to the control command input by the user and compares the water temperature transmitted by the water tank temperature sensor 110 (actual water tank temperature) with the water temperature set by the user (set temperature). When the actual water tank temperature is lower than the set temperature, the controller 130 controls the electric heating device 140 to start, so as to heat the water in the tank. When the actual water tank temperature is greater than or equal to the set temperature, the controller 130 controls the electric heating device 140 to turn off, and at this time, it is not necessary to heat the water in the tank.

[0047] When the controller or water tank temperature sensor inside the water heater malfunctions, the control switch 150 closes, and the thermostat 160 connects to an external power source through the terminal block 120. The thermostat 160 then controls the electric heating device 140 to heat the water in the water tank, thereby improving the reliability of the water heater and quickly meeting the user's hot water needs.

[0048] For example, the workflow when the controller or water tank temperature sensor inside the water heater malfunctions can be as follows: When the controller 130 detects that the water temperature transmitted by the water tank temperature sensor 110 exceeds the range set by the software (a preset range, which can be set according to the actual situation, and is not limited in this embodiment), and reaches a preset time (which can be set according to the actual situation, and is not limited in this embodiment), it determines that the water tank temperature sensor 110 is malfunctioning; when an malfunction occurs inside the controller 130, the operation panel can be used to display the fault, which includes an malfunction of the water tank temperature sensor 110 and an malfunction inside the controller 130.

[0049] If the water tank temperature sensor 110 is found to be malfunctioning, the controller 130 cannot control the electric heating device 140 to turn on or off according to the judgment conditions; if the controller 130 is found to be malfunctioning internally, the controller 130 cannot control the electric heating device 140. In both of these cases, the user can manually close the control switch 150, and the thermostat 160 will be connected to an external power source through the terminal block 120. The thermostat 160 will then control the electric heating device 140 to heat the water in the water tank, thereby improving the reliability of the water heater and quickly meeting the user's hot water needs.

[0050] The thermostat 160 has the function of detecting the water temperature in the water tank. Users can also adjust the set temperature through the thermostat 160. The thermostat 160 compares the detected actual water temperature in the tank with the set temperature. When the actual water temperature in the tank is lower than the set temperature, the thermostat 160 controls the electric heating device 140 to start, so as to heat the water in the tank. When the actual water temperature in the tank is greater than or equal to the set temperature, the thermostat 160 controls the electric heating device 140 to turn off, so there is no need to heat the water in the tank.

[0051] For example, the terminal block 120 can be secured with a pressure plate and screws to lock the connecting wires (the lines connected to the controller 130 and the thermostat 160 respectively), and the connecting wires on both sides of the terminal block 120 can be connected in series, which facilitates wiring, and the wiring is simple and reliable. The power cord and the connecting wire can be directly connected in series through the terminal block 120 without splicing, so as to realize the transfer from a single contact point to different loads and controls. That is, it can realize the simultaneous connection of the controller 130 and the thermostat 160 using a single power cord.

[0052] The aforementioned water heater includes a water tank, a water tank temperature sensor mounted on the water tank, a terminal block for connecting to an external power source, a controller that connects the water tank temperature sensor and the terminal block respectively, an electric heating device connected to the controller, a control switch connected to the terminal block, and a thermostat that connects the control switch and the electric heating device respectively. This allows the thermostat to control the electric heating device to produce hot water when the controller or the water tank temperature sensor malfunctions, thereby improving the reliability of the water heater and quickly meeting the user's hot water needs.

[0053] In one embodiment, the control switch is a circuit breaker.

[0054] Specifically, a circuit breaker can automatically cut off the current when an abnormal situation such as overload or short circuit occurs in the circuit. By setting the control switch as a circuit breaker, the circuit can be cut off in time when an abnormality occurs, protecting the safety of subsequent electric heating devices and improving the safety of the water heater.

[0055] In this embodiment, the control switch is a circuit breaker, which enables the circuit to be cut off in time when an abnormality occurs, thereby improving the safety of the water heater.

[0056] In one embodiment, the circuit breaker is a normally open circuit breaker.

[0057] Specifically, during normal operation of the water heater, the controller controls the electric heating device to heat the water in the tank. The circuit breaker is a normally open circuit breaker, which closes only when the controller or the water tank temperature sensor malfunctions.

[0058] In this embodiment, the circuit breaker is a normally open circuit breaker. The normally open circuit breaker closes only when the controller or water tank temperature sensor malfunctions, so that the thermostat controls the electric heating device to heat the water in the water tank. This avoids the scenario where there is no hot water available when the user needs hot water, improves the reliability of the water heater, and quickly solves the user's hot water needs.

[0059] In one embodiment, the thermostat includes a temperature control body and a temperature sensing device, wherein the temperature control body is connected to the temperature sensing device and a control switch, and the temperature sensing device is used to detect the water temperature in the water tank.

[0060] Specifically, the location of the temperature sensing device can be set according to the actual situation. In this embodiment, the temperature sensing device is a temperature sensing head as an example. The temperature sensing head can obtain the water temperature by closely attaching to the water tank through a blind tube on the outer shell of the water tank. The temperature control body automatically disconnects or closes according to the detected water temperature and is connected in series with the electric heating device. The electric heating device disconnects or connects to the power supply according to the state of the temperature controller and does not require controller processing.

[0061] In this embodiment, the temperature control unit of the thermostat is connected to the temperature sensing device, the control switch, and the temperature protector, respectively. When the controller or the water tank temperature sensor malfunctions, the electric heating device is controlled to heat the water in the water tank, thereby improving the reliability of the water heater and quickly meeting the user's hot water needs.

[0062] In one embodiment, the thermostat is a volumetric thermostat.

[0063] Specifically, the working fluid inside the expansion thermostat can expand or contract according to the sensed temperature, so that the contacts inside the expansion thermostat can close or open, thereby controlling the electric heating device to heat the water in the water tank.

[0064] In this embodiment, the body expansion thermostat can control its own conduction state according to the sensed temperature, so that when the controller or water tank temperature sensor is abnormal, it can control the electric heating device to heat the water in the water tank, thereby improving the reliability of the water heater and quickly solving the user's hot water needs.

[0065] In one embodiment, such as Figure 2 As shown, the water heater also includes:

[0066] Temperature protector 170 is connected to controller 130, thermostat 160 and electric heating device 140 respectively.

[0067] Specifically, such as Figure 2As shown, the temperature protector 170 is located between the controller 130 and the electric heating device 140, and the temperature protector 170 is connected to the thermostat 160. The temperature protector 170 is used to detect the water temperature in the water tank and control the electric heating device 140 to cut off the power when the water temperature is too high, thereby protecting the electric heating device 140 and the water tank.

[0068] In this embodiment, the water heater is also equipped with a temperature protector, which is connected to the controller, thermostat and electric heating device respectively, thereby protecting the electric heating device and the water tank and improving the safety of the water heater.

[0069] In one embodiment, the temperature protector includes a temperature sensing device and a switching device, wherein the switching device is connected to the temperature sensing device, the controller, the thermostat, and the electric heating device, respectively.

[0070] Specifically, the switching device is connected to the temperature detection device, the controller, the thermostat and the electric heating device respectively. When the water temperature detected by the temperature detection device reaches the protection threshold (which is set according to the actual situation and is not limited in this embodiment), the switching device is disconnected, and the electric heating device is de-energized, thereby protecting the electric heating device and the water tank.

[0071] In this embodiment, the switching device in the temperature protector is connected to the temperature detection device, controller, thermostat and electric heating device respectively, so that when the water temperature in the water tank reaches the protection threshold, the switching device is disconnected to protect the electric heating device and the water tank, thereby improving the safety of the water heater.

[0072] In one embodiment, the water heater further includes:

[0073] The heat exchange system, connected to the controller, is used to heat the water in the water tank.

[0074] Specifically, the water heater may also be equipped with a heat exchange system. It should be noted that the internal structure of the heat exchange system can be configured according to the actual situation, and is not limited in this embodiment. The heat exchange system is used to heat the water in the water tank by utilizing air energy.

[0075] For example, a heat exchange system may include a compressor, a fan, an evaporator, and a four-way valve.

[0076] In one embodiment, the water heater further includes:

[0077] Control panel, connected to the controller.

[0078] Specifically, the control panel communicates with the controller to obtain and display abnormal information from the controller or water tank temperature sensor, prompting the user to manually turn on the control switch.

[0079] To facilitate understanding by those skilled in the art, a specific example of a water heater will be used to illustrate the concept below, such as... Figure 3 As shown, taking an air source water heater as an example, the wiring board can be a terminal block, the control switch can be a circuit breaker, and the adjustable thermostat can be a thermostat.

[0080] like Figure 3 As shown, the control panel and water tank temperature sensor are both connected to the controller. The controller is connected to the heat exchange system and the temperature protector, respectively. The temperature protector is connected to the electric heating device. The controller can heat the water in the water tank by controlling the electric heating device or the heat exchange system. The terminal block is connected to an external power supply. The controller and the circuit breaker are connected to the terminal block. The adjustable thermostat is connected to the circuit breaker and the temperature protector, respectively. The adjustable thermostat can be connected to an external power supply through the circuit breaker and the terminal block. When the controller or the water tank temperature sensor malfunctions, the circuit breaker closes, and the adjustable thermostat controls the electric heating device to heat the water in the water tank.

[0081] For example, such as Figure 3 As shown, the specific working process of the water heater is as follows: The user sends commands such as power on, power off, temperature setting, working mode selection, and power on or off the electric heating device to the controller through the operation panel; The controller receives the power on command from the operation panel, detects the actual temperature of the water tank through the water tank temperature sensor, and then compares it with the set temperature. When the actual temperature of the water tank is lower than the set temperature, the controller turns on the heat exchange system or the electric heating device; when the actual temperature of the water tank is greater than or equal to the set temperature, the controller turns off the heat exchange system or the electric heating device.

[0082] When a heat exchange system malfunctions, the controller transmits the fault information to the operation panel, which displays a fault code. It should be noted that the controller can determine a heat exchange system malfunction based on detected temperature values ​​(including coil temperature / exhaust temperature / return gas temperature), system pressure, compressor current, and other parameters; however, this is not limited to this specific embodiment. The controller receives the start-up command from the operation panel, detects the actual water tank temperature using the water tank temperature sensor, and then compares it to the set temperature. When the actual water tank temperature is lower than the set temperature, the controller activates the electric heating device; when the actual water tank temperature is greater than or equal to the set temperature, the controller deactivates the electric heating device.

[0083] When the water tank temperature sensor malfunctions, the controller cannot obtain the actual water tank temperature and cannot activate the heat exchange system or electric heating device according to the judgment conditions; or when the controller malfunctions, the controller cannot activate the heat exchange system or electric heating device. In this case, the user can open the wiring cover of the electric heating device, manually close the circuit breaker (default is open), and set the water temperature through the adjustable thermostat. When the actual water tank temperature is lower than the set temperature, the adjustable thermostat will activate the electric heating device; when the actual water tank temperature is greater than or equal to the set temperature, the adjustable thermostat will deactivate the electric heating device.

[0084] In one embodiment, the control panel is provided with a display device for displaying the operating status of the water heater.

[0085] The specific type and structure of the display device can be set according to the actual situation, and are not limited in the embodiments of this application.

[0086] To facilitate understanding by those skilled in the art, the following description of a water heater will be provided using another specific example, such as... Figure 4 As shown, taking an air source water heater as an example, the wiring board can be a terminal block, the control switch can be a circuit breaker, and the adjustable thermostat can be a thermostat. The example is that the circuit breaker and the adjustable thermostat are installed in the junction box of the electric heating device and the temperature protection device.

[0087] like Figure 4 As shown, the water heater includes an operation panel, controller, water tank temperature sensor, water heater main unit, water tank, electric heater, circuit breaker, temperature protector and adjustable thermostat.

[0088] The control panel communicates with the controller to set user control commands and transmit these commands to the controller, such as power on / off and water temperature setting commands. It also reads the water heater's operating status from the controller and displays it on the panel (display device), such as operating mode and water temperature fault prompts.

[0089] The controller is used to receive control commands from the operation panel and collect the water temperature transmitted by the water tank temperature sensor in order to control the water heater unit, heat exchange system and electric heating device.

[0090] A water tank temperature sensor is installed in the water tank to detect the water temperature inside the tank and is connected to the controller to send the resistance value corresponding to the detected water temperature to the controller.

[0091] The water heater unit is connected to the controller and the water tank respectively. The controller sends on / off commands to the water heater unit. The refrigerant pipe of the water heater unit is connected to the heat exchanger of the water tank, and the water tank is heated by the flow of refrigerant.

[0092] The water tank contains an electric heating device, a water tank temperature sensor, a temperature protector, a circuit breaker, and an adjustable thermostat to heat the water inside the tank.

[0093] An electric heating device is installed in the water tank and connected to a temperature protector to heat the water tank.

[0094] The temperature protector is installed in the water tank and is connected to the controller, adjustable thermostat, and electric heating device. When the temperature protector detects that the actual temperature of the water tank has reached the preset threshold, it cuts off the power to the electric heating device to protect the water tank and the electric heating device.

[0095] The circuit breaker is installed in the water tank and connected to the external power supply and adjustable thermostat. It is disconnected when the water heater is working normally and manually closed by the user when the water heater malfunctions.

[0096] In the description of this specification, references to terms such as "some embodiments," "other embodiments," and "ideal embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0097] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0098] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A water heater, characterized in that, include: Water tank; A water tank temperature sensor is installed on the water tank, and the water tank temperature sensor is used to detect the water temperature in the water tank; A junction box for connecting to an external power source; The controller is connected to the water tank temperature sensor and the terminal block, respectively. An electric heating device is connected to the controller, and the electric heating device is used to heat the water in the water tank; Control switch, connected to the terminal block; The thermostat is connected to the control switch and the electric heating device, respectively.

2. The water heater according to claim 1, characterized in that, The control switch is a circuit breaker.

3. The water heater according to claim 2, characterized in that, The circuit breaker is a normally open circuit breaker.

4. The water heater according to claim 1, characterized in that, The thermostat includes a temperature control body and a temperature sensing device, wherein the temperature control body is connected to the temperature sensing device and the control switch respectively, and the temperature sensing device is used to detect the water temperature in the water tank.

5. The water heater according to claim 1, characterized in that, The temperature controller is a volumetric expansion type temperature controller.

6. The water heater according to claim 1, characterized in that, The water heater also includes: A temperature protector is connected to the controller, the temperature controller, and the electric heating device, respectively.

7. The water heater according to claim 6, characterized in that, The temperature protector includes a temperature detection device and a switching device, wherein the switching device is connected to the temperature detection device, the controller, the thermostat and the electric heating device respectively.

8. The water heater according to any one of claims 1 to 7, characterized in that, The water heater also includes: A heat exchange system, connected to the controller, is used to heat the water in the water tank.

9. The water heater according to any one of claims 1 to 7, characterized in that, The water heater also includes: The operation panel is connected to the controller.

10. The water heater according to claim 9, characterized in that, The control panel is equipped with a display device, which is used to display the operating status of the water heater.

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