Instant water boiler

Abstract

The utility model discloses an instant heating type water boiler, which belongs to the field of water heating equipment and is used for solving the problems of higher cost and poorer reliability of the existing water boiler, the instant heating type water boiler comprises a shell, a heating liner, a mechanical temperature regulator and a temperature controller, the heating liner is arranged in the shell, is powered by a power supply circuit and is used for accommodating and heating water; the mechanical temperature regulator is connected with the heating container and used for setting the working temperature of the heating container and controlling the working temperature to be kept within a preset range. The temperature controller is connected with the heating container and used for sensing the working temperature of the heating container, disconnecting the power supply circuit when the working temperature is larger than a first preset value and closing the power supply circuit when the working temperature is lower than a second preset value so as to control the working temperature of the heating container to be between the first preset value and the second preset value. According to the instant heating type water boiler, the safety and the reliability of products can be improved, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of hot water equipment, and particularly relates to an instant hot water dispenser. Background Art

[0002] As a device for instantaneously heating drinking water, one of the core functions of an instant hot water dispenser is to precisely control the heating temperature through a temperature controller to meet the specific hot water temperature requirements of users. In the current market, in order to improve the accuracy of temperature control, electronic temperature regulators are generally used to replace traditional mechanical temperature regulators. Although electronic temperature regulators perform excellently in improving temperature control accuracy, their applications are accompanied by several significant limitations:

[0003] High cost: Compared with mechanical temperature regulators, electronic temperature regulators have significant disadvantages in manufacturing costs, which directly leads to an increase in the overall production cost of instant hot water dispensers, and may thus affect the market competitiveness of products.

[0004] Reliability issues: Although electronic components have advantages in precise control, they are highly sensitive to the use environment (such as temperature, humidity, etc.). Once a failure or malfunction occurs, the hot water dispenser will lose its temperature control function, which not only affects the user experience but also may pose a potential threat to the safety performance of the product, reducing the overall reliability of the product.

[0005] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present disclosure, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0006] (1) Technical problems to be solved

[0007] The utility model provides an instant hot water dispenser, and the technical problem to be solved at least is: how to reduce the manufacturing cost and improve the reliability of product temperature control.

[0008] (2) Technical solutions

[0009] To solve the above technical problems, the utility model provides the following technical solutions:

[0010] An instant hot water dispenser, comprising:

[0011] A housing;

[0012] A heating tank, disposed inside the housing and powered by a power supply circuit, for accommodating and heating water;

[0013] A mechanical temperature regulator, connected to the heating tank, for setting the operating temperature of the heating tank and controlling the operating temperature to be maintained within a preset range;

[0014] A thermostat, connected to the heating tank, is used to sense the operating temperature of the heating tank, disconnect the power supply circuit when the operating temperature is greater than a first preset value, and close the power supply circuit when the operating temperature is lower than a second preset value, so as to control the operating temperature of the heating tank between the first preset value and the second preset value;

[0015] Wherein, the preset range is between the first preset value and the second preset value, and the sensing accuracy of the thermostat for the operating temperature of the heating tank is greater than the sensing accuracy of the mechanical temperature regulator for the operating temperature of the heating tank.

[0016] In some embodiments, the mechanical temperature regulator includes a mechanical knob, and the mechanical knob is used to set the operating temperature of the heating tank and is exposed outside the housing.

[0017] In some embodiments, the thermostat is a snap-action thermostat.

[0018] In some embodiments, the heating tank is provided with a heating element for heating water, and the power supply circuit is used to supply power to the heating element.

[0019] In some embodiments, the power supply circuit is provided with a dry-run breaker, and the dry-run breaker is used to sense the operating temperature of the heating tank and disconnect the power supply circuit when the operating temperature is greater than a third preset value.

[0020] In some embodiments, the instant hot water dispenser is further provided with a reset device, and the reset device is arranged towards the dry-run breaker and is used to reset the dry-run breaker when the operating temperature is lower than a fourth preset value, so that the power supply circuit is closed.

[0021] In some embodiments, the mechanical temperature regulator and the thermostat are connected in series on the power supply circuit.

[0022] (III) Beneficial effects

[0023] Compared with the prior art, the instant hot water dispenser provided by the present utility model has the following beneficial effects:

[0024] (1) Dual temperature control protection, enhancing safety: The instant hot water dispenser innovatively combines a mechanical temperature regulator and a thermostat to form a dual temperature control protection mechanism, that is, the mechanical temperature regulator controls the operating temperature of the heating tank; at the same time, when the water temperature exceeds the preset safety upper limit (such as 98 °C), the thermostat can quickly cut off the power supply, effectively preventing the danger that may be caused by too high water temperature, further enhancing the safety of the system, ensuring timely response in any case, and preventing accidents.

[0025] (2) Enhance system reliability and reduce maintenance costs: The design of this instant water heater fully considers the fault tolerance of the product. When any component of the thermostat or mechanical temperature regulator fails, the other component can still continue to work and maintain the basic heating function of the product. This design greatly reduces the risk of the product becoming unusable due to a single component failure, thereby enhancing the reliability of the product.

[0026] (3) Reduce costs and improve cost performance: Compared with products that only use electronic temperature regulators, this instant water heater combines a mechanical temperature regulator and a thermostat, effectively controlling the manufacturing cost while achieving temperature control and dual protection, improving the cost performance of the product and better meeting market demands. Description of the Drawings

[0027] Figure 1 It is a schematic diagram of the instant water heater in the embodiment.

[0028] Figure 2 It is a schematic diagram of the internal structure of the instant water heater in the embodiment.

[0029] Figure 3 It is the front view of the instant water heater in the embodiment.

[0030] Reference numerals: housing 1, heating tank 2, mechanical temperature regulator 3, thermostat 4, dry - burning prevention circuit breaker 5, reset device 6, mechanical knob 30. Detailed Embodiment

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0032] Existing instant water heaters usually control the heating temperature through a temperature controller. To improve the accuracy of temperature control, the temperature controller usually uses a more accurate electronic temperature regulator instead of a mechanical temperature regulator. However, the drawback is that the price of the electronic temperature regulator is high, increasing the manufacturing cost of the product. At the same time, once the electronic temperature regulator fails, the water heater will lose its temperature control function, affecting the normal use of the product, and the reliability of the product is relatively low.

[0033] To solve the above - mentioned technical problems, this embodiment provides an instant water heater. Figure 1 It is a schematic diagram of the instant water heater in the embodiment. Figure 2 It is a schematic diagram of the internal structure of the instant water heater in the embodiment. Figure 3 It is the front view of the instant water heater in the embodiment.

[0034] An instant water heater in this embodiment, as Figure 1As shown in the figure, it includes: a housing 1, a heating tank 2, a mechanical temperature regulator 3, and a thermostat 4.

[0035] The housing 1 serves as the installation and support carrier for the heating tank 2 and other internal components.

[0036] The heating tank 2 is provided inside the housing 1 and is powered by a power supply circuit, and is used to hold and heat water. It can be understood that the power supply circuit is connected to a power source, and the heating tank 2 can be installed inside the housing 1 by existing installation methods.

[0037] The mechanical temperature regulator 3 is connected to the heating tank 2 and is used to set the operating temperature of the heating tank 2 and control the operating temperature to be maintained within a preset range.

[0038] The thermostat 4 is connected to the heating tank 2 and is used to sense the operating temperature of the heating tank 2, and disconnect the power supply circuit when the operating temperature is greater than the first preset value, and close the power supply circuit when the operating temperature is lower than the second preset value, so as to control the operating temperature of the heating tank 2 between the first preset value and the second preset value.

[0039] Among them, the preset range is between the first preset value and the second preset value, and the sensing accuracy of the thermostat 4 for the operating temperature of the heating tank 2 is greater than the sensing accuracy of the mechanical temperature regulator 3 for the operating temperature of the heating tank 2.

[0040] When the instant water heater with the above technical solution works, the mechanical temperature regulator 3 sets a general operating temperature (such as 94°), and the thermostat 4 starts to work at the same time; the heating tank 2 starts to heat in the state where the power supply circuit is closed until the water temperature approaches the set value; when the operating temperature is greater than the first preset value (such as 98°), the thermostat 4 disconnects the power supply circuit to stop the heating of the heating tank 2, and when the operating temperature is lower than the second preset value (such as 90°), the thermostat 4 closes the power supply circuit to make the heating tank 2 continue to heat, so as to control the operating temperature of the heating tank 2 between the first preset value and the second preset value. In this way, during the heating process, the mechanical temperature regulator 3 can also control the operating temperature of the heating tank 2. At the same time, if the operating temperature exceeds the upper limit of the preset range (such as 94±4°), the thermostat 4 will immediately cut off the power supply of the heating tank 2 to prevent danger caused by too high water temperature, realizing double protection. After reaching and maintaining the set water temperature, the mechanical temperature regulator 3 and the thermostat 4 will continuously monitor the change of the water temperature to keep the water temperature stable. When one of the thermostat 4 and the mechanical temperature regulator 3 fails, the other can still continue to monitor and control the operating temperature of the heating tank 2 to maintain the basic heating function, improving the reliability of the product. It can be seen that compared with the existing water heaters that only use electronic temperature regulators, the instant water heater of the present invention can reduce the manufacturing cost and improve the reliability of product temperature control.

[0041] The following technical solutions are referred to Figure 1and Figure 2 as shown

[0042] In an embodiment where the above-mentioned mechanical temperature regulator 3 and thermostat 4 are connected to the heating tank 2, the mechanical temperature regulator 3 and the thermostat 4 are fixed to the outer wall of the heating tank 2 by bolts.

[0043] In other embodiments where the above-mentioned mechanical temperature regulator 3 and thermostat 4 are connected to the heating tank 2, the mechanical temperature regulator 3 and the thermostat 4 are fixed to the outer wall of the heating tank 2 by means such as bonding and welding.

[0044] Exemplarily, the mechanical temperature regulator 3 uses an existing mechanical temperature regulator 3.

[0045] Exemplarily, the mechanical temperature regulator 3 includes a mechanical knob 30, and the mechanical knob 30 is exposed outside the housing 1, so that it is convenient for the user to set the working temperature of the heating tank 2 through the mechanical knob 30.

[0046] In an embodiment of the above-mentioned thermostat 4, the thermostat 4 is a snap-action thermostat 4.

[0047] Exemplarily, there is a snap-action bimetal piece for sensing the temperature of the heating tank 2 inside the thermostat 4. When the temperature rises to the first preset value, the bimetal piece bends and deforms due to different thermal expansion coefficients. When the deformation reaches a certain degree, the contact is triggered to actuate and cut off the power supply circuit, thereby preventing the device from overheating; when the temperature is lower than the second preset value, the bimetal piece returns to its original state, the contact closes again, and the power supply circuit is connected to make the heating tank 2 continue to heat.

[0048] In an embodiment of the above-mentioned heating water in the heating tank 2, the heating tank 2 is provided with a heating element for heating water, and the power supply circuit is used to supply power to the heating element.

[0049] Exemplarily, the heating element is an electric heating rod or an electric heating tube provided inside the heating tank 2.

[0050] In order to avoid damage to the device due to dry burning of the heating tank 2, the power supply circuit is provided with a dry-burning prevention circuit breaker 5, and the dry-burning prevention circuit breaker 5 is used to sense the working temperature of the heating tank 2 and disconnect the power supply circuit when the working temperature is greater than the third preset value.

[0051] Exemplarily, the dry - burning prevention circuit breaker 5 of the instant - heating water heater usually contains a temperature - sensing element that is very sensitive to temperature changes, such as a temperature - sensing resistor or a bimetallic strip. When the water heater is working normally, water flows through the heating cavity and is heated to the operating temperature. At this time, the temperature of the heating element remains within the normal range, and the temperature - sensing element will not trigger the protection mechanism. Once the water level in the heating cavity drops to a certain extent, or there is a waterless state due to some reason (such as water source interruption), the temperature of the heating element will rise rapidly. After the temperature - sensing element senses the abnormal increase in temperature, it will send a signal to the power supply circuit. After receiving the signal, the power supply circuit will immediately perform a power - off protection operation, cutting off the power supply to the heating element, thereby preventing it from continuing to dry - burn and effectively preventing equipment damage or safety accidents caused by dry - burning.

[0052] To achieve the automatic reset function of the dry - burning prevention circuit breaker 5, that is, after troubleshooting and refilling with water, it can automatically resume the heating function. The instant - heating water heater is also provided with a reset device 6. The reset device 6 is arranged facing the dry - burning prevention circuit breaker 5 and is used to reset the dry - burning prevention circuit breaker 5 when the operating temperature is lower than the fourth preset value, so that the power supply circuit is closed. It can be understood that, to ensure safety, it is usually necessary to manually confirm and reset the dry - burning prevention circuit breaker 5.

[0053] Exemplarily, the mechanical temperature regulator 3 and the thermostat 4 are connected in series on the power supply circuit.

[0054] It can be understood that the instant - heating water heater can also be the same as existing water heaters, and is also provided with an inlet water path for delivering water to the heating tank 2, an outlet water path for outputting hot water in the heating tank 2, and other valves and Venturi components for controlling the water - path switch, which will not be elaborated here.

[0055] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An instant hot water dispenser, characterized in that, Comprising: A housing; A heating tank, disposed within the housing and powered by a power supply circuit, for containing and heating water; A mechanical temperature regulator, connected to the heating tank, for setting the operating temperature of the heating tank and controlling the operating temperature to be maintained within a preset range; A thermostat, connected to the heating tank, for sensing the operating temperature of the heating tank and disconnecting the power supply circuit when the operating temperature is greater than a first preset value, and closing the power supply circuit when the operating temperature is lower than a second preset value, so as to control the operating temperature of the heating tank between the first preset value and the second preset value; Wherein, the preset range is between the first preset value and the second preset value, and the sensing accuracy of the thermostat for the operating temperature of the heating tank is greater than the sensing accuracy of the mechanical temperature regulator for the operating temperature of the heating tank.

2. The instant water heater according to claim 1, characterized in that, The mechanical temperature regulator includes a mechanical knob, and the mechanical knob is used for setting the operating temperature of the heating tank and is exposed outside the housing.

3. The instant water heater according to claim 1, characterized in that, The thermostat is a snap-action thermostat.

4. The instant water heater according to claim 1, wherein The heating tank is provided with a heating element for heating water, and the power supply circuit is used for supplying power to the heating element.

5. The instant water heater according to claim 4, characterized in that, The power supply circuit is provided with a dry-run circuit breaker, and the dry-run circuit breaker is used for sensing the operating temperature of the heating tank and disconnecting the power supply circuit when the operating temperature is greater than a third preset value.

6. The instant water heater according to claim 5, wherein The instant hot water dispenser is further provided with a reset device, the reset device is arranged towards the dry-run circuit breaker, and is used for resetting the dry-run circuit breaker when the operating temperature is lower than a fourth preset value, so that the power supply circuit is closed.

7. The instant water heater according to claim 1, characterized in that, The mechanical temperature regulator and the thermostat are connected in series on the power supply circuit.

Images