Automatic exhaust system for zero-cold-water water heater and zero-cold-water gas water heater

Abstract

An automatic exhaust system for a zero-cold-water water heater and a zero-cold-water gas water heater, comprising a water pump arranged in a pipeline of the water heater and used to drive fluid flow in the water heater; a current sensor electrically connected to the water pump and capable of detecting a real-time current of the water pump; a drain valve arranged on the pipeline; a controller electrically connected to the current sensor, the water pump and the drain valve; when the real-time current is less than a preset standard current, the current sensor outputs a drain signal to the controller, the controller outputs an opening signal to the drain valve after receiving the drain signal, and the drain valve opens after receiving the opening signal. The automatic exhaust mode based on current monitoring can effectively solve the problem of heat cycle failure or poor effect caused by air entering the pipeline, realize normal circulation when there is air in the pipeline, improve the use effect and reliability of the zero-cold-water water heater, and enhance the user experience.

Description

Technical Field

[0001] This utility model relates to the field of gas water heaters, and in particular to an automatic exhaust system for a zero-cold-water water heater and a zero-cold-water gas water heater. Background Technology

[0002] Zero-cold-water water heaters have garnered widespread market attention due to their superior user experience. Their core advantage lies in their ability to provide instant hot water. When a user turns on the tap, a built-in circulating pump pre-heats the cold water in the pipes, thus preventing users from having to wait long periods for hot water and avoiding the waste of large amounts of cold water.

[0003] However, in actual use, the zero-cold-water function of zero-cold-water water heaters is easily affected by external factors, leading to circulation failure. One common problem is air entering the pipes. When air is present in the pipes, it interferes with the normal water circulation. Air forms airlocks in the pipes, hindering water flow and preventing the circulating pump from effectively delivering cold water to the water heater for heating, thus causing heat circulation failure or reduced performance. As a result, users may still face waiting for hot water to be available, severely impacting the performance and user experience of zero-cold-water water heaters. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defect in the prior art that air will form air resistance in the pipe, which will hinder the flow of water and prevent the circulating water pump from effectively delivering cold water to the water heater for heating, thus leading to the failure of heat circulation or a deterioration of the effect. The present invention provides an automatic exhaust system for zero cold water water heaters and a zero cold water gas water heater.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] An automatic venting system for a zero-cold-water water heater, comprising:

[0007] A water pump, which is installed in the pipes of the water heater and is used to drive the flow of fluid inside the water heater;

[0008] A current sensor is electrically connected to the water pump and is capable of detecting the real-time current magnitude of the water pump.

[0009] A drain valve, wherein the drain valve is installed on the pipe;

[0010] A controller, which is electrically connected to the current sensor, the water pump, and the drain valve;

[0011] When the real-time current is less than the preset standard current, the current sensor outputs a drainage signal to the controller. After receiving the drainage signal, the controller outputs an opening signal to the drainage valve. After receiving the opening signal, the drainage valve opens.

[0012] In this solution, the aforementioned structure is adopted. The automatic venting system uses a water pump to drive fluid flow and a current sensor to detect the real-time current of the pump. When the current is less than a preset standard current, the current sensor transmits a drainage signal to the controller, which then controls the drain valve to open. At this point, the water pump carries the air along with the water in the pipe through the drain valve, completing the venting process. This current-monitoring-based automatic venting method effectively solves the problem of air entering the pipes causing thermal circulation failure or deterioration. It enables normal circulation even when air is present in the pipes, improving the performance and reliability of zero-cold-water water heaters and enhancing the user experience.

[0013] Preferably, the preset standard current is the pump current when the circulation flow rate is 1L / min.

[0014] In this solution, the above structure is adopted. Through experiments, it can be found that the current when air enters the water pump is less than the current when the circulation flow rate is 1L / min. This clarifies that the preset standard current is the water pump current when the circulation flow rate is 1L / min. This provides an accurate, easily quantifiable, and operable basis for determining whether the drain valve needs to be opened. This allows the system to more accurately sense the situation of air entering the water pump, further improving the accuracy and timeliness of automatic venting and better ensuring the normal operation of the zero-cold-water water heater circulation system.

[0015] Preferably, the drain valve is located at the outlet of the water pump.

[0016] In this solution, the above-mentioned structure is adopted, and the drain valve is set at the outlet of the water pump. This allows for more effective use of water flow to expel air, ensuring that air is expelled in time before entering the circulation system. This prevents air from accumulating inside the water pump and affecting its normal operation, thereby more reliably guaranteeing the circulation effect of the zero-cold-water water heater and improving the stability and reliability of the entire system.

[0017] Preferably, the automatic venting system for the water heater further includes a flow sensor, which can detect the water flow in the pipe. When the real-time current is greater than a preset standard current and the water flow is less than a preset standard flow, the controller outputs a shut-off signal to the water pump, and the water pump shuts off.

[0018] In this solution, the aforementioned structure is used, and a flow sensor is added. When the real-time current exceeds the preset standard current and the water flow rate is less than the preset standard flow rate, the controller outputs a shutdown signal to the water pump, thus shutting it down. This design prevents the water pump from continuing to operate under abnormal flow conditions, avoiding resource waste and potential damage to the system. It improves the safety and reliability of the entire automatic venting system and also extends the service life of the equipment.

[0019] Preferably, the automatic exhaust system for the water heater further includes a warning device, and the controller is electrically connected to the warning device;

[0020] When the real-time current is greater than the preset standard current and the water flow is less than the preset standard flow, the controller outputs an alarm signal to the early warning device, and the early warning device alarms and outputs a fault code.

[0021] In this solution, the above-mentioned structure is adopted. By setting up an early warning device, when an abnormal situation occurs where the real-time current is greater than the preset standard current and the water flow is less than the preset standard flow, an alarm can be set up in time and a fault code can be output. This allows users to understand the abnormal status of the equipment in a timely manner, carry out maintenance and repair in a timely manner, reduce the inconvenience and safety hazards caused by faults, and improve the safety of the product and user satisfaction.

[0022] Preferably, the preset standard flow rate is 2.5 L / min.

[0023] In this solution, the above structure is adopted, and the preset standard flow rate is clearly defined as 2.5L / min. This provides a specific and accurate quantitative standard for the monitoring and judgment of the flow sensor, enabling the system to more accurately identify abnormal water flow conditions. This enhances the accuracy and reliability of the automatic venting system, ensures that the circulation system of the zero-cold-water water heater operates normally within a reasonable flow range, and improves the stability and safety of the system.

[0024] Preferably, when the fluid in the pipe reaches the set temperature, if the drain valve is detected to have been opened, the water pump will continue to run for a preset period and then be shut off.

[0025] In this solution, the above structure is adopted. When the fluid in the pipe reaches the set temperature, if the drain valve is detected to have been opened, the water pump will run continuously for a preset period and then shut off. This design can better ensure that the air in the pipe is completely discharged, avoiding air residue due to insufficient drain valve opening time, and further improving the automatic venting effect. At the same time, by running for an extra period of time, the water discharged in the pipe is replenished, ensuring the circulating heating performance of the zero-cold-water water heater, so that users can obtain a more stable and comfortable hot water use experience.

[0026] A zero-cold-water gas water heater includes an automatic venting system for zero-cold-water water heaters as described above.

[0027] In this solution, the above structure is adopted to apply the automatic venting system to the zero-cold-water gas water heater, which enables the gas water heater to have an automatic venting function. This effectively solves the problem of circulation failure or deterioration caused by air entering the pipes, improves the performance and reliability of the gas water heater, enhances the product's market competitiveness, and provides users with a better and more convenient user experience.

[0028] Preferably, it includes a water circulation pipe and several water-using terminals, wherein the water-using terminals, the water pump, and the drain valve are all disposed on the water circulation pipe.

[0029] In this solution, the above-mentioned structure, the design of the water circulation pipe, and the reasonable arrangement of the water-using end, water pump, and drain valve on the water circulation pipe enable the entire automatic venting system to be better integrated into the water circulation system of the zero-cold-water gas water heater. This achieves effective automatic venting and water circulation control, improves the integration and operating efficiency of the entire water heater system, ensures the stability and reliability of hot water supply, and enhances the overall performance and user experience of the product.

[0030] Preferably, the water circulation pipeline includes an inlet pipe and a hot water outlet pipe, and the water pump and the drain valve are both located in the hot water outlet pipe.

[0031] In this solution, the above-mentioned structure is adopted, clearly defining the water circulation pipeline as including the inlet pipe and the hot water outlet pipe. The water pump and drain valve are located in the hot water outlet pipe. This layout is conducive to better control of air release and water flow regulation during the hot water circulation process, and can more efficiently remove air from the hot water outlet pipe, ensuring the timeliness, stability and circulation effect of hot water supply. It further optimizes the automatic air release system and water circulation system of the zero-cold-water gas water heater, improves the performance and quality of the product, and meets users' needs for high-quality zero-cold-water gas water heaters.

[0032] The significant advantages of this invention are as follows: This invention discloses an automatic venting system for zero-cold-water water heaters and a zero-cold-water gas water heater. The automatic venting system uses a water pump to drive fluid flow and a current sensor to detect the real-time current of the pump. When the current is less than a preset standard current, the current sensor transmits a drainage signal to the controller, which then controls the drain valve to open. At this time, the water pump expels the air from the pipes through the drain valve, completing the venting process. This automatic venting method based on current monitoring effectively solves the problem of air entering the pipes causing thermal circulation failure or reduced performance. It enables normal circulation even when air is present in the pipes, improving the performance and reliability of zero-cold-water water heaters and enhancing the user experience. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of a zero-cold-water gas water heater according to an embodiment of the present invention.

[0034] Figure 2 This is a schematic diagram of the structure of the water pump in the automatic air venting system for a zero-cold-water water heater according to an embodiment of the present invention.

[0035] Figure 3 This is a schematic diagram illustrating the operation process of the automatic exhaust system for a zero-cold-water water heater according to an embodiment of the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] Water pump 1

[0038] Water heater 2

[0039] Water end 3 Detailed Implementation

[0040] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0041] like Figure 1 , 2 As shown, an automatic venting system for a zero-cold-water water heater includes: a water pump 1, installed inside the pipe of the water heater 2 and used to drive the fluid flow within the water heater 2; a current sensor, electrically connected to the water pump 1 and capable of detecting the real-time current of the water pump 1; a drain valve, installed on the pipe; and a controller, electrically connected to the current sensor, the water pump 1, and the drain valve. When the real-time current is less than a preset standard current, the current sensor outputs a drain signal to the controller. Upon receiving the drain signal, the controller outputs an open signal to the drain valve, which then opens. This automatic venting system drives fluid flow through the water pump 1 and uses the current sensor to detect the real-time current of the water pump 1. When the current is less than the preset standard current, the current sensor transmits a drain signal to the controller, which then controls the drain valve to open. At this time, the water pump 1 carries the air from the pipe and discharges it through the drain valve, completing the venting process. This automatic venting method based on current monitoring can effectively solve the problem of air entering the pipes causing heat circulation failure or deterioration. It enables normal circulation even when there is air in the pipes, improving the performance and reliability of zero-cold-water water heaters and enhancing the user experience.

[0042] like Figure 1 , 2As shown, the preset standard current is the current of water pump 1 when the circulation flow rate is 1L / min. Experiments show that the current when air enters water pump 1 is less than the current when the circulation flow rate is 1L / min. This clarifies that the preset standard current is the current of water pump 1 when the circulation flow rate is 1L / min. This provides an accurate, easily quantifiable, and operable basis for determining whether the drain valve needs to be opened, enabling the system to more accurately sense the entry of air into water pump 1, further improving the accuracy and timeliness of automatic venting, and better ensuring the normal operation of the zero-cold-water water heater circulation system.

[0043] like Figure 1 , 2 As shown, the drain valve is located at the outlet of water pump 1. Placing the drain valve at the outlet of water pump 1 allows for more effective use of water flow to expel air, ensuring that air is expelled in time before entering the circulation system. This prevents air from accumulating inside water pump 1 and affecting its normal operation, thus more reliably guaranteeing the circulation effect of the zero-cold-water water heater and improving the stability and reliability of the entire system.

[0044] like Figure 1 , 2 As shown, the automatic venting system for water heater 2 also includes a flow sensor. The flow sensor detects the water flow rate in the pipe. When the real-time current exceeds a preset standard current and the water flow rate is less than the preset standard flow rate, the controller outputs a shutdown signal to water pump 1, shutting it off. This design prevents water pump 1 from continuing to operate under abnormal flow conditions, avoiding resource waste and potential damage to the system. It improves the safety and reliability of the entire automatic venting system and extends the equipment's lifespan.

[0045] like Figure 1 , 2 As shown, the automatic venting system for water heater 2 also includes an early warning device, which is electrically connected to the controller. When the real-time current exceeds the preset standard current and the water flow is less than the preset standard flow, the controller outputs an alarm signal to the early warning device, which then alarms and outputs a fault code. By setting up the early warning device, when an abnormal situation occurs where the real-time current exceeds the preset standard current and the water flow is less than the preset standard flow, an alarm can be triggered promptly and a fault code can be output. This allows users to understand the abnormal status of the equipment in a timely manner, enabling timely maintenance and repair, reducing inconvenience and safety hazards caused by malfunctions, and improving product safety and user satisfaction.

[0046] like Figure 1 , 2As shown, the preset standard flow rate is 2.5 L / min. Clearly defining the preset standard flow rate as 2.5 L / min provides a specific and accurate quantitative standard for the flow sensor's monitoring and judgment, enabling the system to more accurately identify abnormal water flow conditions. This enhances the accuracy and reliability of the automatic venting system, ensures the circulating system of the zero-cold-water water heater operates normally within a reasonable flow range, and improves the system's stability and safety.

[0047] like Figure 1 , 2 As shown, when the fluid in the pipe reaches the set temperature, if the drain valve is detected to have been opened, the water pump 1 will continue to run for a preset period and then shut off. This design ensures that the air in the pipe is completely expelled, preventing air residue due to insufficient drain valve opening time, and further improving the automatic air venting effect. Simultaneously, by running for an additional period to replenish the drained water in the pipe, the circulating heating performance of the zero-cold-water water heater is guaranteed, allowing users to obtain a more stable and comfortable hot water experience.

[0048] Specifically, such as Figure 3 As shown in this embodiment, when the water heater 2 is in use, T0 is the user-set temperature. The temperature sensor first detects whether the real-time water temperature T2 in the pipe has reached the set temperature. If it is less than the set temperature -5°C, the water pump 1 is started. After the water pump 1 is started, it further detects whether the real-time current I is greater than the preset standard current I0. If not, the drain valve is opened to release air. If so, it further detects whether the real-time flow rate Q is greater than 2.5L / min. If not, it indicates that the water heater 2 is faulty, so the water pump 1 is stopped and an alarm is triggered. If so, it indicates that the water heater 2 is normal, and combustion can be started to increase the water temperature in the pipe. Then, it further detects whether the real-time water temperature has reached the set temperature. After the temperature reaches the standard, if the drain valve has not been opened, the water pump 1 is directly turned off. If the drain valve has been opened, the water pump 1 continues to run for a period of time to fill the pipe with water.

[0049] like Figure 1 As shown, a zero-cold-water gas water heater includes the above-described automatic venting system for zero-cold-water water heaters. Applying the automatic venting system to a zero-cold-water gas water heater enables the gas water heater to automatically vent, effectively solving the problem of circulation failure or reduced performance caused by air entering the pipes. This improves the performance and reliability of the gas water heater, enhances the product's market competitiveness, and provides users with a better and more convenient user experience.

[0050] like Figure 1 , 2As shown, it includes a water circulation pipe and several water-using terminals 3. The water-using terminals 3, water pump 1, and drain valve are all installed on the water circulation pipe. The design of the water circulation pipe and the reasonable arrangement of the water-using terminals 3, water pump 1, and drain valve on the water circulation pipe enable the entire automatic venting system to be better integrated into the water circulation system of the zero-cold-water gas water heater, achieving effective automatic venting and water circulation control, improving the integration and operating efficiency of the entire water heater system, ensuring the stability and reliability of hot water supply, and enhancing the overall performance and user experience of the product.

[0051] like Figure 1 , 2 As shown, the water circulation pipeline includes an inlet pipe and a hot water outlet pipe. The water pump 1 and drain valve are both located in the hot water outlet pipe. Clearly defining the water circulation pipeline as including an inlet pipe and a hot water outlet pipe, with the water pump 1 and drain valve located in the hot water outlet pipe, allows for better control of air release and water flow regulation during the hot water circulation process. This enables more efficient removal of air from the hot water outlet pipe, ensuring timely, stable, and effective hot water supply and circulation. Furthermore, it optimizes the automatic air release system and water circulation system of the zero-cold-water gas water heater, improving product performance and quality, and meeting users' demands for high-quality zero-cold-water gas water heaters.

Claims

1. An automatic venting system for a zero-cold-water water heater, characterized in that, It includes: A water pump, which is installed in the pipes of the water heater and is used to drive the flow of fluid inside the water heater; A current sensor is electrically connected to the water pump and is capable of detecting the real-time current magnitude of the water pump. A drain valve, wherein the drain valve is installed on the pipe; A controller, which is electrically connected to the current sensor, the water pump, and the drain valve; When the real-time current is less than the preset standard current, the current sensor outputs a drainage signal to the controller. After receiving the drainage signal, the controller outputs an opening signal to the drainage valve. After receiving the opening signal, the drainage valve opens.

2. The automatic venting system for a zero-cold-water water heater as described in claim 1, characterized in that, The preset standard current is the water pump current when the circulation flow rate is 1L / min.

3. The automatic venting system for a zero-cold-water water heater as described in claim 1, characterized in that, The drain valve is located at the outlet of the water pump.

4. The automatic venting system for a zero-cold-water water heater as described in claim 1, characterized in that, The automatic venting system also includes a flow sensor, which can detect the water flow rate in the pipe. When the real-time current is greater than the preset standard current and the water flow rate is less than the preset standard flow rate, the controller outputs a shutdown signal to the water pump, and the water pump shuts down.

5. The automatic venting system for a zero-cold-water water heater as described in claim 4, characterized in that, The automatic exhaust system also includes a warning device, and the controller is electrically connected to the warning device; When the real-time current is greater than the preset standard current and the water flow is less than the preset standard flow, the controller outputs an alarm signal to the early warning device, and the early warning device alarms and outputs a fault code.

6. The automatic venting system for a zero-cold-water water heater as described in claim 4, characterized in that, The preset standard flow rate is 2.5 L / min.

7. The automatic venting system for a zero-cold-water water heater as described in claim 1, characterized in that, When the fluid in the pipeline reaches the set temperature, if the drain valve is detected to have been opened, the water pump will continue to run for a preset period and then shut off.

8. A zero-cold-water gas water heater, characterized in that, It includes an automatic venting system for a zero-cold-water water heater as described in any one of claims 1 to 7.

9. The zero-cold-water gas water heater as described in claim 8, characterized in that, It includes a water circulation pipe and several water-using terminals, wherein the water-using terminals, the water pump and the drain valve are all installed on the water circulation pipe.

10. The zero-cold-water gas water heater as described in claim 9, characterized in that, The water circulation pipeline includes an inlet pipe and a hot water outlet pipe, and the water pump and the drain valve are both installed in the hot water outlet pipe.

Images