Temperature control electric water heating device for heating cold water at rear end of gas water heater

Abstract

The utility model belongs to the field of water heaters, and particularly relates to a temperature control electric water heating device for heating cold water at the rear end of a gas water heater, which comprises a machine body, an electric heating mechanism, a temperature detection mechanism, a temperature control switch and a control panel. One end of the electric heating mechanism is connected to a hot water pipe at the rear end of the gas water heater; the control panel is arranged on the machine body, and the temperature detection mechanism is arranged at the front end of the electric heating mechanism to detect current temperature information; the temperature control switch is in communication connection with the temperature detection mechanism, the control panel and the electric heating mechanism so as to correspondingly control the electric heating mechanism to execute corresponding actions; the machine body is connected to the air switch, and the air switch is electrically connected to the electric heating mechanism. Therefore, the problem that the gas water heater wastes resources is solved.

Description

Technical Field

[0001] The utility model belongs to the field of water heaters, and in particular relates to a temperature-controlled electric water heater for heating cold water at the rear end of a gas water heater. Background Art

[0002] When there is a long distance water point behind the traditional gas water heater, due to factors such as the length and material of the hot water pipe, users often need to wait for a while after turning on the hot water tap until the cold water in the pipe is drained before the hot water can reach the water point. The cold water released during this period not only wastes water resources, but also affects the user experience.

[0003] In response to the above problems, the existing methods of "double hot water pipe circulating water" and "single hot water + cold water pipe plus H valve" are used to solve the problem of long-distance cold water. However, the former requires repeated heating and circulation of water in the water pipe, which wastes gas and electricity. The latter requires turning on the circulation function when using hot water, and hot water can only be used directly after preheating. Therefore, hot water cannot be released directly, so the experience is not good.

[0004] In view of the current technical problems, a more reasonable technical solution needs to be proposed to solve the problem of water heaters wasting resources. Utility Model Content

[0005] The utility model aims to provide a temperature-controlled electric water heater for heating cold water at the rear end of a gas water heater, so as to solve the problem of waste of resources of the gas water heater.

[0006] In order to achieve the above object, the utility model provides a temperature-controlled electric water heater for heating cold water at the rear end of a gas water heater, one end of the temperature-controlled electric water heater is connected to a hot water pipe at the rear end of the gas water heater, and the other end is connected to a water outlet pipe;

[0007] The temperature-controlled electric water heater also includes an electric heating mechanism, a temperature detection mechanism, a temperature control switch and a control panel, wherein the electric heating mechanism is electrically connected to a power source to heat water by electricity; wherein one end of the electric heating mechanism is connected to the water outlet pipe, and the other end is connected to the temperature detection mechanism and the water inlet pipe;

[0008] The control panel is arranged on the machine body, and the temperature detection mechanism is arranged at the heating chamber end of the electric heating mechanism to detect the temperature information of the water currently flowing through the heating mechanism; the temperature control switch is communicatively connected to the temperature detection mechanism, the control panel, and the electric heating mechanism to control the electric heating mechanism to perform corresponding actions according to the current temperature information of the water;

[0009] The machine body is connected to an air switch, and the air switch is electrically connected to the electric heating mechanism; wherein the set temperature of the gas water heater>the set temperature of the low-temperature start switch>the set temperature of the electric heating mechanism.

[0010] In a possible design, the temperature-controlled electric water heating device for heating the cold water at the rear end of the gas water heater is characterized in that a three-way valve is provided in front of the water inlet of the electric heating mechanism, and among the three channels of the three-way valve, one is connected to the heating chamber, another is connected to the water inlet pipe, and another is provided with the temperature detection mechanism.

[0011] In a possible design, the temperature-controlled electric water heater for heating the cold water at the rear end of the gas water heater is characterized in that the temperature detection mechanism is threadedly connected to the three-way valve, and the detection probe of the temperature detection mechanism is sealedly inserted in the channel of the three-way valve.

[0012] In a possible design, the temperature-controlled electric water heater device for heating cold water at the rear end of a gas water heater is characterized in that the temperature detection mechanism is configured as a temperature measuring metal rod.

[0013] In a possible design, the temperature-controlled electric water heater for heating cold water at the rear end of a gas water heater is characterized in that a control button is provided on the body, and the control button is communicatively connected to the temperature control switch and the electric heating mechanism. In the present disclosure, the control button is connected to the temperature control switch and the electric heating mechanism through a cable to achieve signal transmission.

[0014] In a possible design, the temperature-controlled electric water heater also includes an AC contactor, which is electrically connected to the temperature-controlled switch, the air switch, the electric heating mechanism and the power supply, wherein the power of the temperature-controlled switch is less than the power of the electric heating mechanism.

[0015] Among them, under normal use, the set temperature of the gas water heater> the set temperature of the temperature control switch> the set temperature of the electric heating mechanism. When the water temperature in the water pipe is lower than the preset temperature of the temperature control switch, the electric heating mechanism is in working condition. When water is used, the electric heating mechanism quickly heats the cold water in the cavity to make it reach the condition of using hot water; when the hot water heated by the gas water heater reaches the electric heating mechanism, the water temperature is higher than the set temperature of the temperature control switch, the temperature control switch is closed, and the electric heating mechanism is powered off and no longer heats the water in the pipe.

[0016] The temperature control switch receives information from the temperature detection mechanism and controls the operation of the electric heating mechanism according to the preset temperature value. When the water temperature in the water pipe is lower than the preset temperature of the temperature control switch, the temperature control switch is turned on, the electric heating mechanism is powered on and has working conditions, and can quickly heat the cold water in the pipe. When the hot water heated by the gas water heater reaches the electric heating mechanism, the water temperature is higher than the set temperature of the temperature control switch. At this time, the temperature control switch is turned off and the electric heating mechanism stops working.

[0017] The temperature-controlled electric water heater uses intelligent control to ensure that the electric heating mechanism starts working only when needed, avoiding unnecessary energy waste. At the same time, due to the coordinated work of the gas water heater and the electric heating mechanism, the water temperature can be raised to the preset value in a short time, improving the heating efficiency. The device is preset with an air switch to ensure that the power supply can be cut off in time when the power supply is abnormal or the equipment fails, protecting the safety of the equipment and users.

[0018] When the gas supply is interrupted but the electricity supply is normal, the temperature-controlled electric water heater can continue to provide hot water through continuous heating by electricity, providing users with a reliable hot water alternative. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the structure of a temperature-controlled electric water heater for heating cold water at the rear end of a gas water heater provided by the utility model in one embodiment;

[0021] Figure 2 This is a schematic diagram of the structure of another embodiment of the temperature-controlled electric water heater for heating cold water at the rear end of a gas water heater provided by the utility model, wherein the air switch is connected in an external manner;

[0022] Figure 3 This is a schematic structural diagram of a temperature-controlled electric water heater for heating cold water at the rear end of a gas water heater provided by the utility model in another embodiment, wherein this embodiment does not have an AC contactor, and the air switch is connected in an external manner.

[0023] In the above drawings: 1-machine body, 21-water outlet pipe, 22-water inlet pipe, 3-electric heating mechanism, 4-temperature detection mechanism, 5-temperature control switch, 6-control panel, 7-air switch, 8-AC contactor, 9-power supply, 10-three-way valve, 11-temperature adjustment button. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that although the description of these embodiments is used to help understand the present invention, it does not constitute a limitation of the present invention.

[0025] The specific structural and functional details disclosed herein are only used to describe the exemplary embodiments of the present invention. However, the present invention can be embodied in many alternative forms, and it should not be understood that the present invention is limited to the embodiments set forth herein.

[0026] According to a specific embodiment of the present disclosure, a temperature-controlled electric water heater is provided for heating cold water at the rear end of a gas water heater. One end of the temperature-controlled electric water heater is connected to a hot water pipe at the rear end of the gas water heater, and the other end is connected to a water outlet pipe 21. Figures 1 to 3 A specific embodiment thereof is shown.

[0027] See also Figures 1 to 3 As shown, the temperature-controlled electric water heating device for heating the cold water at the rear end of the gas water heater includes a body 1 and an electric heating mechanism 3 arranged in the body 1, one end of the electric heating mechanism 3 is connected to the water inlet pipe 22, and the other end is connected to the water outlet pipe 21, and the electric heating mechanism 3 is electrically connected to the power supply 9 to heat the water by electricity.

[0028] The temperature-controlled electric water heater also includes a temperature detection mechanism 4, a temperature control switch 5 and a control panel 6. The control panel 6 is arranged on the body 1, and the temperature detection mechanism 4 is arranged in the heating chamber of the electric heating mechanism 3 to detect the current temperature information of the water in the heating chamber; the temperature control switch 5 is communicatively connected to the temperature detection mechanism 4, the control panel 6 and the electric heating mechanism 3 to control the electric heating mechanism 3 to perform corresponding actions according to the current temperature information of the water. The body 1 is connected to the air switch 7, and the air switch 7 is electrically connected to the electric heating mechanism 3.

[0029] Among them, under normal use, the set temperature of the gas water heater>the set temperature of the temperature control switch>the set temperature of the electric heating mechanism 3. When the water temperature in the water pipe is lower than the preset temperature of the temperature control switch 5, the temperature control switch 5 is turned on, and the electric heating mechanism 3 is ready for working. When water is used, the electric heating mechanism 3 quickly heats the cold water in the pipe to make it reach the condition of using hot water; when the hot water heated by the gas water heater reaches the electric heating device, the water temperature after two heatings is higher than the set temperature, the temperature control switch 5 is turned off, the electric heating mechanism 3 is powered off, stops working and no longer heats the water in the pipe.

[0030] The temperature control switch 5 receives the information from the temperature detection mechanism 4 and controls the operation of the electric heating mechanism 3 according to a preset temperature value.

[0031] When the water temperature in the water inlet pipe 22 is lower than the preset temperature of the temperature control switch 5, the temperature control switch 5 is turned on, and the electric heating mechanism 3 is in working condition and can quickly heat the cold water in the pipe.

[0032] When the hot water heated by the gas water heater reaches the electric heating mechanism 3, the water temperature is higher than the set temperature of the temperature control switch 5. At this time, the temperature control switch 5 is closed and the electric heating mechanism 3 stops working.

[0033] The temperature-controlled electric water heater ensures that the electric heating mechanism 3 starts working only when needed through intelligent control, thus avoiding unnecessary energy waste. At the same time, due to the coordinated work of the gas water heater and the electric heating mechanism 3, the water temperature can be raised to a preset value in a short time, thus improving the heating efficiency. The device is pre-set with an air switch 7, which can ensure that the power supply 9 can be cut off in time when the power supply 9 is abnormal or the equipment fails, thus protecting the safety of the equipment and the user.

[0034] When the gas supply is interrupted but the electricity supply is normal, the temperature-controlled electric water heater can continue to provide hot water through continuous heating by electricity, providing users with a reliable hot water alternative.

[0035] In the present disclosure, it is characterized in that a three-way valve 10 is provided on the water inlet pipe 22 of the electric heating mechanism 3. Among the three channels of the three-way valve 10, one is connected to the electric heating mechanism 3, another is connected to the water inlet pipe 22, and another is provided with the temperature detection mechanism 4.

[0036] Specifically, the first channel is directly connected to the water inlet of the electric heating mechanism 3, so that the water in the electric heating mechanism 3 can be circulated. The second channel is connected to the water inlet pipe 22, that is, the hot water pipe connected to the rear end of the gas water heater, and its function is to directly deliver the hot water that has reached or exceeded the preset temperature to the user. The third channel is provided with a temperature detection mechanism 4, which can monitor the temperature of the hot water passing through this channel in real time and provide accurate water temperature information for the temperature control switch 5.

[0037] In the present disclosure, the temperature detection mechanism 4 is threadedly connected to the three-way valve 10 , and a detection probe of the temperature detection mechanism 4 is sealedly inserted into the channel of the three-way valve 10 .

[0038] Through the threaded connection, the temperature detection mechanism 4 can be firmly fixed on the three-way valve 10, and it is not easy to loosen due to vibration or other external factors. This connection method is simple and reliable, avoiding the potential danger of hot water leakage to the equipment and users, ensuring that the detected temperature information is accurate, and easy to disassemble and repair. Since the detection probe is directly inserted into the channel where the hot water flows, the temperature of the hot water can be detected in real time and accurately. This provides accurate data support for the temperature control switch 5, enabling it to intelligently control the operation of the electric heating mechanism 3 according to the real-time temperature information.

[0039] The sealed plug design avoids the risk of hot water leakage and improves the safety of the system. At the same time, since the temperature detection mechanism 4 can accurately detect the temperature, when the water temperature is too high, the temperature control switch 5 can take timely measures to turn off the electric heating mechanism 3 to prevent the device from being overheated and damaged or causing burns to the user.

[0040] In one embodiment provided by the present disclosure, the temperature detection mechanism 4 is configured as a temperature measuring metal rod. Metal has good thermal conductivity, so that the temperature measuring metal rod can quickly sense the change of water temperature, thereby ensuring the real-time nature of temperature detection, thereby enabling the temperature measuring metal rod to provide accurate temperature readings and provide reliable data support for the temperature control switch 5.

[0041] In the temperature-controlled electric water heater, a temperature-measuring metal rod is placed in the heating chamber of the electric heating mechanism 3 to monitor the water temperature flowing into the heating chamber in real time. When the water temperature in the water pipe is lower than the preset temperature of the temperature control switch 5, the temperature control switch 5 is turned on, and the electric heating mechanism 3 is ready to work and can quickly heat the cold water in the pipe. As the water temperature rises, the temperature-measuring metal rod transmits the real-time temperature information to the temperature control switch 5. When the water temperature reaches or exceeds the preset temperature, the temperature control switch 5 will issue a command to stop the electric heating mechanism 3. At the same time, the gas water heater continues to work to ensure a continuous supply of hot water.

[0042] The temperature detection mechanism 4 is configured as a temperature measuring metal rod, which can facilitate positioning, installation and maintenance. The temperature-controlled electric water heater can achieve faster, more accurate and more stable temperature detection and control, which not only improves the efficiency and comfort of hot water supply, but also reduces energy waste, which is in line with the concept of energy conservation and environmental protection.

[0043] In the present disclosure, a temperature adjustment button 11 is provided on the body 1, and the temperature adjustment button 11 is communicatively connected to the temperature control switch 5. The temperature adjustment button 11 is an interface part directly operated by the user, and is arranged at a position convenient for the user to touch on the body 1. The user can issue an instruction by pressing, rotating or sliding the temperature adjustment button 11, so as to set the on or off temperature of the temperature control switch 5.

[0044] The temperature control button 11 and the temperature control switch 5 establish a communication connection through a circuit or a wireless signal, so that the temperature value set by the user through the temperature control button 11 is transmitted to the temperature control switch 5 in real time and accurately, thereby realizing the control of the temperature-controlled electric water heater.

[0045] After receiving the temperature setting value transmitted by the temperature adjustment button 11, the temperature control switch 5 will intelligently control the working state of the electric heating mechanism 3 according to factors such as the current water temperature, the working state of the gas water heater and the electric heating mechanism 3, so as to ensure that the temperature of the hot water can reach the set value quickly and stably.

[0046] In actual application, the user can conveniently adjust the hot water temperature according to his or her needs, because the temperature control switch 5 can intelligently control the working state of the hot water device, so that the user can obtain hot water that meets the set temperature in a short time.

[0047] In order to ensure the normal operation of the temperature-controlled electric water heater, in this disclosure, refer to Figure 1 and Figure 2As shown, the temperature-controlled electric water heater also includes an AC contactor, which is electrically connected to the temperature control switch, the air switch, the electric heating mechanism and the power supply, wherein the power of the temperature control switch is less than the power of the electric heating mechanism. In this way, the control switch is connected to the AC contactor 8 through the power supply line 9, and the AC contactor 8 is connected to the 220V power supply 9. The power supply 9 can be connected to the indoor power supply through an external air switch or through a socket, and the temperature is set through the temperature control switch.

[0048] Specifically, when the water temperature in the water pipe is lower than the preset temperature of the temperature control switch 5, the temperature control switch 5 is turned on, the AC contactor 8 is energized, and the electric heating mechanism 3 is ready for working. When water is used, the electric heating mechanism 3 quickly heats the cold water in the pipe to meet the conditions for using hot water; when the hot water heated by the gas water heater reaches the electric heating device, the water temperature after two heatings is higher than the set temperature, the temperature control switch 5 is turned off, the AC contactor 8 is powered off, and the electric heating mechanism 3 is powered off, and stops working and no longer heats the water in the pipe.

[0049] The temperature control switch 5 receives the information from the temperature detection mechanism 4 and controls the operation of the electric heating mechanism 3 through the AC contactor 8 according to a preset temperature value.

[0050] When the water temperature in the water inlet pipe 22 is lower than the preset temperature of the temperature control switch 5, the temperature control switch 5 is turned on, the AC contactor 8 is energized, and the electric heating mechanism 3 is in working condition, and the cold water in the pipe can be quickly heated.

[0051] When the hot water heated by the gas water heater reaches the electric heating mechanism 3, the water temperature is higher than the set temperature of the temperature control switch 5. At this time, the temperature control switch 5 is closed, the AC contactor 8 is powered off, and the electric heating mechanism 3 stops working.

[0052] The temperature-controlled electric water heater ensures that the electric heating mechanism 3 starts working only when needed through intelligent control, thus avoiding unnecessary energy waste. At the same time, due to the coordinated work of the gas water heater and the electric heating mechanism 3, the water temperature can be raised to a preset value in a short time, thus improving the heating efficiency. The device is pre-set with an air switch 7 and an AC contactor 8, which can ensure that the power supply 9 can be cut off in time when the power supply 9 is abnormal or the equipment fails, thus protecting the safety of the equipment and the user.

[0053] like Figure 3 As shown, when the power of the temperature control switch is greater than the power of the electric heating mechanism, there is no need to set an AC contactor.

[0054] In the present disclosure, the temperature detection mechanism 4 can also be configured as a temperature sensor, and the temperature sensor is arranged behind the electric heating mechanism 3. In other embodiments, the temperature detection mechanism 4 can also be configured as any other suitable temperature detection element, and those skilled in the art can flexibly configure it in the prior art.

[0055] In the present disclosure, the temperature control switch 5 is a prior art.

[0056] Specifically, the temperature control switch 5 is configured as a single chip microcomputer, which has the ability to process signals.

[0057] In addition, the temperature control switch 5 can also be configured as one of a PLC logic controller, a central processing unit (CPU), a digital signal processor (DSP), an application specific integrated circuit (ASIC) or a field programmable gate array (FPGA).

[0058] In the present disclosure, the temperature control switch 5 is respectively connected to the temperature detection mechanism 4, the control panel 6, the electric heating mechanism 3, and the AC contactor 8 through cables. In other embodiments, the temperature control switch 5 can also be connected to the temperature detection mechanism 4, the control panel 6, and the electric heating mechanism 3 through wireless communication modules such as WiFi modules and ZigBee modules. In this regard, those skilled in the art can flexibly configure it under the technical concept of the present disclosure.

[0059] The utility model is not limited to the above optional implementation modes, and anyone can derive other various forms of products under the enlightenment of the utility model. The above specific implementation modes should not be understood as limiting the protection scope of the utility model. The protection scope of the utility model shall be based on the definition in the claims, and the description can be used to interpret the claims.

Claims

1. A temperature-controlled electric water heater for heating cold water at the rear end of a gas water heater, one end of which is connected to a hot water pipe at the rear end of the gas water heater, and the other end is connected to a water outlet pipe, characterized in that: The temperature-controlled electric water heater also includes an electric heating mechanism, a temperature detection mechanism, a temperature control switch and a control panel, wherein the electric heating mechanism is electrically connected to a power source and heats cold water by using electricity; The control panel is arranged on the machine body, and the temperature detection mechanism is arranged in the heating chamber of the electric heating mechanism to detect the temperature information of the water currently flowing through the electric heating mechanism; the temperature control switch is communicatively connected to the temperature detection mechanism, the control panel and the electric heating mechanism to control the electric heating mechanism to perform corresponding actions according to the current temperature information of the water; The machine body is connected to the air switch, and the air switch is electrically connected to the electric heating mechanism; wherein the set temperature of the gas water heater>the set temperature of the low-temperature start switch>the set temperature of the electric heating mechanism.

2. The temperature-controlled electric water heater for heating cold water at the rear end of a gas water heater according to claim 1, characterized in that: The water inlet pipe of the electric heating mechanism is provided with a three-way valve. Among the three channels of the three-way valve, one is connected to the electric heating mechanism, another is connected to the water outlet pipe, and another is provided with the temperature detection mechanism.

3. The temperature-controlled electric water heater for heating cold water at the rear end of a gas water heater according to claim 2, characterized in that: The temperature detection mechanism is threadedly connected to the three-way valve, and a detection probe of the temperature detection mechanism is sealedly inserted into the channel of the three-way valve.

4. The temperature-controlled electric water heater for heating cold water at the rear end of a gas water heater according to claim 1, characterized in that: The temperature detection mechanism is configured as a temperature measuring metal rod.

5. The temperature-controlled electric water heater for heating cold water at the rear end of a gas water heater according to claim 1, characterized in that: The machine body is provided with a control button, and the control button is communicatively connected to the temperature control switch and the electric heating mechanism.

6. The temperature-controlled electric water heater for heating the cold water at the rear end of a gas water heater according to claim 1, characterized in that: The temperature-controlled electric water heater also includes an AC contactor, which is electrically connected to the temperature-controlled switch, the air switch, the electric heating mechanism and the power supply, wherein the power of the temperature-controlled switch is less than the power of the electric heating mechanism.

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