Standard gas water heater

Abstract

A standard gas water heater comprises a shell, a burner assembly, a heat exchanger assembly, a pneumatic control system assembly, a fan assembly, an exhaust fume collecting hood assembly, a water pump system assembly, a water outlet nozzle assembly and a main controller assembly, and all the assembly parts are installed in the shell. The standard gas water heater performs stable thermal load output work in a mode of independently controlling variables and enabling the variables to realize step regulation, data detected by the detection device is only influenced by single variable control, and an objective and real detection result can be obtained, so that the accuracy and the detection capability of the detection result of the detection device are accurately evaluated, and the detection efficiency is improved. And variable control and adjustment of the standard gas water heater are more stable and reliable.

Description

Technical Field

[0001] This utility model belongs to the technical field of testing standard prototypes, specifically relating to a standard gas water heater. Background Technology

[0002] Before being sold on the market, gas water heaters must undergo testing according to national standards. Only those that meet all test results are allowed to be sold, ensuring consumers' safe use. To test the various indicators of gas water heaters, testing agencies use appropriate testing equipment to conduct tests and issue corresponding test results, which reflect the performance of the gas water heater. Furthermore, gas water heaters are subject to energy efficiency labeling. Standardized gas water heater testing ensures the accuracy and reliability of the energy efficiency testing equipment, guaranteeing the effective implementation of the gas water heater energy efficiency labeling system.

[0003] To ensure the accuracy of gas water heater test results, the testing equipment needs to be calibrated. This calibration requires a standard gas water heater. The standard gas water heater is connected to the testing equipment for measurement, and the set output value of the standard gas water heater is compared with the measured value of the testing equipment. The deviation between the two values ​​must meet the allowable metrological error. If the deviation exceeds the allowable metrological error, the test result is inaccurate, and the testing equipment needs to be recalibrated and verified. Therefore, a standard gas water heater is an important tool for product quality control and energy efficiency improvement in the gas water heater industry, and it can better promote the improvement and development of energy efficiency measurement levels in the gas water heater industry.

[0004] Given the current technological level of ordinary gas water heaters, their unstable heat load during normal operation leads to inaccurate test results, making it impossible to accurately evaluate the actual testing capability of the testing device and effectively guarantee the quality and energy efficiency level of the tested gas water heater. Therefore, there is a need to provide a standard gas water heater with a stable heat load output during operation. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, this utility model provides a standard gas water heater.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A standard gas water heater includes a housing, a burner assembly, a heat exchanger assembly, a gas control system assembly, a fan assembly, a fume hood assembly, a water pump system assembly, a water outlet assembly, and a main controller assembly, with each assembly component installed inside the housing;

[0008] The burner assembly is used to burn gas and heat the heat exchanger assembly. The burner assembly is connected to the gas control system assembly and the fan assembly respectively. The gas control system assembly provides gas for the burner assembly to burn, and the fan assembly provides air for the burner assembly to burn.

[0009] The heat exchanger assembly is used for water flow and transfers heat to the water flow, thereby heating the water flow. The water inlet of the heat exchanger assembly is connected to the water pump system assembly through a water pipe, and the water outlet of the heat exchanger assembly is connected to the water outlet assembly through a water pipe.

[0010] The smoke hood assembly is used to treat the flue gas generated by the combustion of the burner assembly and to discharge the purified flue gas. The smoke hood assembly is connected to the heat exchanger assembly.

[0011] The main controller is connected to the burner assembly, heat exchanger assembly, gas control system assembly, fan assembly, fume hood assembly, water pump system assembly and water outlet assembly via circuits, and controls the operation of each assembly component;

[0012] The gas control system assembly, fan assembly, and water pump system assembly work together to keep the heat load of the burner assembly constant during operation, and the heat load of the burner assembly during operation is adjustable in stages.

[0013] In this invention, the burner assembly includes a dual-channel combustion chamber, a combustion chamber panel assembly, and an injection pipe assembly. A dual-channel burner is installed in the dual-channel combustion chamber. The combustion chamber panel assembly covers the opening of the dual-channel combustion chamber. The air inlet of the injection pipe assembly is connected to the gas control system assembly. The air outlet of the injection pipe assembly passes through the combustion chamber panel assembly and is connected to the dual-channel burner. The gas control system assembly transmits gas to the dual-channel burner through the injection pipe assembly, and the injection pipe assembly pressurizes and injects the gas.

[0014] In this invention, the dual-channel burner includes a combustion chamber outer shell, a combustion chamber inner shell, and a combustion chamber inner core. The combustion chamber outer shell is fitted onto the outer wall of the combustion chamber inner shell, and a first flame hole is formed between the combustion chamber inner shell and the combustion chamber outer shell. The combustion chamber inner core is installed inside the combustion chamber inner shell, and a second flame hole is formed between the combustion chamber inner core and the combustion chamber inner shell. The first flame hole is distributed on the outer side of the second flame hole.

[0015] In this invention, the outer shell of the combustion chamber is provided with a first gas injection channel communicating with a first flame hole, and the inner shell of the combustion chamber is provided with a second gas injection channel communicating with a second flame hole. The first and second gas injection channels are respectively connected to the jet pipe assembly. The gas is controlled by the jet pipe assembly to enter the first and second gas injection channels respectively, and is ignited and burned from the first and second flame holes respectively. Ignition in the first flame hole forms a denser flame, and ignition in the second flame hole forms a fainter flame.

[0016] In this utility model, the gas control system assembly is provided with a gas distribution pipe and a proportional valve. The gas distribution pipe includes an inlet pipe and two outlet pipes. The two outlet pipes are respectively connected to the proportional valve, and the gas flow rate of the corresponding outlet pipe is controlled by the proportional valve. The proportional valve is connected to the main controller assembly through a circuit.

[0017] In this invention, the heat load adjustment of a standard gas water heater is set with multiple levels.

[0018] In this utility model, the fan assembly includes a centrifugal fan, an air distribution device, and a wind speed sensor. The air distribution device is installed at the air outlet of the centrifugal fan, and the wind speed sensor is installed on the air outlet side of the air distribution device. The air distribution device is used to ensure that the centrifugal fan outputs air evenly when it is working, and the wind speed sensor is used to detect the wind speed on the air outlet side of the air distribution device and feed the wind speed signal back to the main controller assembly.

[0019] In this invention, the main controller assembly compares the wind speed detected by the wind speed sensor with the set standard wind speed, outputs a compensation signal to the centrifugal fan, controls the centrifugal fan to work, and makes the wind speed transmitted by the centrifugal fan to the burner assembly equal to the set standard wind speed.

[0020] In this invention, after the centrifugal fan of a standard gas water heater has a stable wind speed equal to the set standard wind speed, the main controller assembly controls the centrifugal fan to operate in a stable flow and stable voltage state.

[0021] In this utility model, the air distribution device includes an air distribution plate, on which several sets of air distribution unit channels for uniformly distributing the air are arranged in an array; the air distribution plate is a metal plate with a uniformly distributed microporous structure.

[0022] The beneficial effects of this utility model are: the standard gas water heater achieves stable heat load output by independently controlling variables and making the variables adjustable in stages. The data obtained by the detection device is only affected by the control of a single variable, which can obtain objective and true test results. This allows for an accurate assessment of the accuracy and detection capability of the detection device, making the variable control and adjustment of the standard gas water heater more stable and reliable. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the front structure of a standard gas water heater in this embodiment;

[0024] Figure 2 This is an exploded view of a standard gas water heater in this embodiment;

[0025] Figure 3 This is a schematic diagram of the dual-channel burner in this embodiment;

[0026] Figure 4 This is a schematic diagram of the burner housing in this embodiment;

[0027] Figure 5 This is a schematic diagram of the burner inner shell structure in this embodiment;

[0028] Figure 6 This is a schematic diagram of the burner core structure in this embodiment;

[0029] Figure 7 This is a schematic diagram of the fan assembly in this embodiment;

[0030] Figure 8 This is a schematic diagram of the internal structure of the air distribution plate in this embodiment;

[0031] Figure 9 This is a schematic diagram of the air distribution unit channel in this embodiment. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0033] like Figures 1 to 9As shown, this embodiment discloses a standard gas water heater, including a housing 1, a burner assembly 2, a heat exchanger assembly 3, a gas control system assembly 4, a fan assembly 5, a fume hood assembly 6, a water pump system assembly 7, a water outlet assembly 8, and a main controller assembly 9. All assembly components are installed inside the housing 1. The burner assembly 2 is used to burn gas and heat the heat exchanger assembly 3. The burner assembly 2 is connected to both the gas control system assembly 4 and the fan assembly 5. The gas control system assembly 4 provides gas for the burner assembly 2, and the fan assembly 5 provides air for the burner assembly 2. The heat exchanger assembly 3 is used for water flow. The heat exchanger assembly 3 transfers heat to the water flow, heating the water. The inlet of the heat exchanger assembly 3 is connected to the water pump system assembly 7 via a water pipe, and the outlet of the heat exchanger assembly 3 is connected to the outlet nozzle assembly 8 via a water pipe. The smoke hood assembly 6 treats the flue gas generated by the combustion of the burner assembly 2 and discharges the purified flue gas. The smoke hood assembly 6 is connected to the heat exchanger assembly 3. The main controller assembly 9 is connected to the burner assembly 2, heat exchanger assembly 3, gas control system assembly 4, fan assembly 5, smoke hood assembly 6, water pump system assembly 7, and outlet nozzle assembly 8 via circuits, and controls the operation of each assembly component. The gas control system assembly 4, fan assembly 5, and water pump system assembly 7 work together to maintain a constant heat load during the operation of the burner assembly 2, which is subject to stepped adjustment. By controlling the heat load variable in a stepped and independent manner, the standard gas water heater, when used for metrological calibration of testing devices, allows for the evaluation of the testing device's output data through adjusting a single variable. While adjusting this single variable, other variables remain constant, thus avoiding the problem of other variables affecting the testing device's data output as the adjusted variable changes. Since the standard gas water heater is a tool used to evaluate the accuracy and capability of testing devices, if it automatically adjusts the working conditions of its components to maintain a constant output, the test results from the standard gas water heater will also remain relatively stable, making it impossible to effectively evaluate the testing device and determine its accuracy and capability. However, in this embodiment, the standard gas water heater achieves stable heat load output by independently controlling and stepped adjusting the variable. The data obtained by the testing device is only affected by the control of a single variable, resulting in objective and accurate test results. This allows for a more accurate evaluation of the accuracy and capability of the testing device's results, making the variable control and adjustment of the standard gas water heater more stable and reliable. The test device is used to measure the value of a standard gas water heater. The set output value of the standard gas water heater is compared with the test value of the test device. The deviation between the two values ​​should meet the allowable measurement error. If the deviation exceeds the allowable measurement error, it indicates that the accuracy of the test result is not good and the test device needs to be recalibrated and verified. The test device can be calibrated in a targeted manner based on the deviation.Furthermore, the detection capability of the testing device can be evaluated based on the deviation between the detection value of the testing device and the set output value of the standard gas water heater. The smaller the deviation, the stronger the detection capability; the larger the deviation, the weaker the detection capability.

[0034] In this embodiment, the burner assembly 2 includes a dual-channel combustion chamber 21, a combustion chamber panel assembly 22, and an injection pipe assembly 23. A dual-channel burner 211 is installed inside the dual-channel combustion chamber 21. The combustion chamber panel assembly 22 covers the opening of the dual-channel combustion chamber 21. The air inlet of the injection pipe assembly 23 is connected to the gas control system assembly 4, and the air outlet of the injection pipe assembly 23 passes through the combustion chamber panel assembly 22 and is connected to the dual-channel burner 211. The gas control system assembly 4 transmits gas to the dual-channel burner 211 through the injection pipe assembly 23, and the injection pipe assembly 23 pressurizes and injects the gas. The dual-channel burner 211 includes a combustion chamber outer shell 2111, an inner combustion chamber shell 2112, and an inner combustion chamber core 2113. The combustion chamber outer shell 2111 is fitted onto the outer side wall of the inner combustion chamber shell 2112, and a first flame port 2114 is formed between the inner combustion chamber shell 2112 and the combustion chamber outer shell 2111. The inner combustion chamber core 2113 is installed inside the inner combustion chamber shell 2112, and a second flame port 2115 is formed between the inner combustion chamber core 2113 and the inner combustion chamber shell 2112. The first flame port 2114 is distributed outside the second flame port 2115. The combustion chamber outer shell 2111 is provided with a first gas injection channel 2116 communicating with the first flame port 2114, and the inner combustion chamber shell 2112 is provided with a second gas injection channel 2117 communicating with the second flame port 2115. The first gas ejector channel 2116 and the second gas ejector channel 2117 are respectively connected to the jet pipe assembly 23. The jet pipe assembly 23 controls the gas to enter the first gas ejector channel 2116 and the second gas ejector channel 2117 respectively, and ignite and burn from the first flame hole 2114 and the second flame hole 2115 respectively. Ignition in the first flame hole 2114 forms a denser flame, and ignition in the second flame hole 2115 forms a dimmer flame. Thus, when the dual-channel burner 211 is working, it forms a flame combustion mode with a denser flame on the outside and a dimmer flame on the inside. The dual-channel burner 211 has higher combustion stability and more stable heat input to the heat exchanger assembly 3, thereby reducing the impact of unstable gas combustion on the test results, making the operation of the standard gas water heater more stable, and making the metrological calibration results of the testing equipment more reliable. Specifically, the gas control system assembly 4 is equipped with a gas distribution pipe and a proportional valve. The gas distribution pipe includes an inlet pipe and two outlet pipes. The two outlet pipes are respectively connected to the proportional valve, which controls the gas flow rate of the corresponding outlet pipe. The proportional valve is connected to the main controller assembly 9 through a circuit. The operator can send a control signal to the proportional valve through the main controller assembly 9 to control the gas flow rate of the gas distribution pipe and realize the working heat load adjustment of the standard gas water heater.

[0035] In practical implementation, the heat load adjustment of a standard gas water heater can be set to multiple levels. Therefore, when the testing device needs to verify the accuracy of operation under different heat load conditions, only one standard gas water heater is required for testing and verification, eliminating the need for multiple standard gas water heaters. The accuracy verification of the testing device mainly involves the flow stability of the testing device during the testing process. When the flow rate of the testing device is relatively stable, the accuracy and reliability of the energy efficiency test of the gas water heater are higher; when the flow rate of the testing device is unstable, the accuracy and reliability of the energy efficiency test of the gas water heater are lower. Therefore, it is necessary to verify the flow stability of the testing device. If the heat load of the standard gas water heater changes with the flow rate during verification, or if the heat load of the standard gas water heater is unstable during operation, the verification results of the testing device will be inaccurate. To solve the above problem, the operating heat load of the standard gas water heater needs to be kept constant. This requires the gas control system assembly 4 and the fan assembly 5 to operate stably, thus maintaining a stable flame during ignition and combustion of the standard gas water heater. Specifically, the gas control system assembly 4 precisely controls the primary air coefficient through the gas distribution pipe and proportional valve to optimize combustion efficiency; the flame distribution is more uniform, the combustion is more stable, and the emission concentration of nitrogen oxides and carbon monoxide is effectively reduced, meeting higher environmental protection standards and demonstrating excellent performance. The fan assembly 5 includes a centrifugal fan 51, an air distribution device 52, and a wind speed sensor. The air distribution device 52 is installed at the outlet of the centrifugal fan 51, and the wind speed sensor is installed on the outlet side of the air distribution device 52. The air distribution device 52 is used to ensure uniform airflow when the centrifugal fan 51 is working, and the wind speed sensor is used to detect the wind speed on the outlet side of the air distribution device 52. By setting the air distribution device 52 at the outlet of the centrifugal fan 51, the wind speed transmitted by the centrifugal fan 51 to the burner assembly 2 is uniform and stable. At the same time, by setting the wind speed sensor to detect the wind speed on the outlet side of the air distribution device 52, the wind speed signal is fed back to the main controller assembly 9. The main controller assembly 9 compares the wind speed detected by the wind speed sensor with the set standard wind speed, outputs a compensation signal to the centrifugal fan 51, and controls the centrifugal fan 51 to work so that the wind speed transmitted by the centrifugal fan 51 to the burner assembly 2 is equal to the set standard wind speed. When calibrating the testing device, first start the standard gas water heater and adjust its working heat load according to the calibration requirements. Once the wind speed of the centrifugal fan 51 is stable and equal to the set standard wind speed, and the gas output in the gas control system assembly 4 is stable and equal to the set standard gas output value, record the temperature output value of the testing device to determine the measurement level of the testing device.

[0036] Specifically, in order to maintain a stable heat load output capacity during operation, the main controller assembly controls the centrifugal fan 51 of the standard gas water heater to operate in a stable flow and stable pressure state after the wind speed is stable and equal to the set standard wind speed. The air distribution device 52 includes an air distribution plate 521, on which several sets of air distribution unit channels 522 are arrayed for evenly distributing the airflow. Each air distribution unit channel 522 includes an air inlet channel 5221 opened from the side facing the air outlet of the centrifugal fan 51 and multiple air outlet channels 5222 opened from the side away from the air outlet of the centrifugal fan 51. Each air outlet channel 5222 is connected to the air inlet channel 5221 through a ventilation channel 5223. Both the air inlet channel 5221 and the air outlet channel 5222 extend parallel in the vertical direction. The air inlet channel 5221 has a frustum-shaped channel structure with a larger outer diameter and a smaller inner diameter, which facilitates guiding the air discharged from the centrifugal fan 51 into the air inlet channel 5221, then distributing it to each ventilation channel 5223, and then evenly discharging it through the corresponding air outlet channel 5222, thus achieving the effect of air distribution. Furthermore, in order to improve the air distribution effect of the air distribution plate 521, the air distribution plate 521 is a metal plate with a uniformly distributed microporous structure. The diameter of the micropores on the air distribution plate 521 is between 0.8mm and 1.5mm. Part of the air discharged from the centrifugal fan 51 enters the air distribution unit channel 522 for distribution and discharge, and part of it is distributed and discharged through the micropores. The microporous structure on the air distribution plate 521 can play a certain role in air distribution and pressure relief, thereby improving the passivity of the air distribution plate 521 and enhancing the air distribution effect.

[0037] The above description is only a preferred embodiment of the present utility model. Any technical solution that achieves the purpose of the present utility model by essentially the same means shall fall within the protection scope of the present utility model.

Claims

1. A standard gas water heater, characterized in that: It includes a housing (1), a burner assembly (2), a heat exchanger assembly (3), a gas control system assembly (4), a fan assembly (5), a smoke hood assembly (6), a water pump system assembly (7), a water outlet assembly (8), and a main controller assembly (9), with each assembly component installed inside the housing (1); The burner assembly (2) is used to burn gas and heat the heat exchanger assembly (3). The burner assembly (2) is connected to the gas control system assembly (4) and the fan assembly (5) respectively. The gas control system assembly (4) provides gas for the burner assembly (2) to burn, and the fan assembly (5) provides air for the burner assembly (2) to burn. The heat exchanger assembly (3) is used for water flow and transfers heat to the water flow to heat the water flow. The water inlet of the heat exchanger assembly (3) is connected to the water pump system assembly (7) through a water pipe, and the water outlet of the heat exchanger assembly (3) is connected to the water outlet assembly (8) through a water pipe. The smoke hood assembly (6) is used to treat the flue gas generated by the combustion of the burner assembly (2) and discharge the purified flue gas. The smoke hood assembly (6) is connected to the heat exchanger assembly (3). The main controller assembly (9) is connected to the burner assembly (2), heat exchanger assembly (3), gas control system assembly (4), fan assembly (5), smoke hood assembly (6), water pump system assembly (7) and water outlet assembly (8) respectively through circuits, and controls the operation of each assembly component; The gas control system assembly (4), the fan assembly (5) and the water pump system assembly (7) work together to keep the heat load of the burner assembly (2) constant during operation, and the heat load of the burner assembly (2) is adjustable in stages.

2. A standard gas water heater according to claim 1, characterized in that: The burner assembly (2) includes a dual-channel combustion chamber (21), a combustion chamber panel assembly (22), and a jet pipe assembly (23). A dual-channel burner (211) is installed in the dual-channel combustion chamber (21). The combustion chamber panel assembly (22) covers the opening of the dual-channel combustion chamber (21). The air inlet of the jet pipe assembly (23) is connected to the gas control system assembly (4). The air outlet of the jet pipe assembly (23) passes through the combustion chamber panel assembly (22) and is connected to the dual-channel burner (211). The gas control system assembly (4) transmits gas to the dual-channel burner (211) through the jet pipe assembly (23). The jet pipe assembly (23) pressurizes and injects the gas.

3. A standard gas water heater according to claim 2, characterized in that: The dual-channel burner (211) includes a combustion chamber outer shell (2111), a combustion chamber inner shell (2112), and a combustion chamber inner core (2113). The combustion chamber outer shell (2111) is fitted onto the outer wall of the combustion chamber inner shell (2112), and a first flame hole (2114) is formed between the combustion chamber inner shell (2112) and the combustion chamber outer shell (2111). The combustion chamber inner core (2113) is installed inside the combustion chamber inner shell (2112), and a second flame hole (2115) is formed between the combustion chamber inner core (2113) and the combustion chamber inner shell (2112). The first flame hole (2114) is distributed outside the second flame hole (2115).

4. A standard gas water heater according to claim 3, characterized in that: The outer shell of the combustion chamber (2111) is provided with a first gas injection channel (2116) that connects to the first flame hole (2114), and the inner shell of the combustion chamber (2112) is provided with a second gas injection channel (2117) that connects to the second flame hole (2115). The first gas injection channel (2116) and the second gas injection channel (2117) are respectively connected to the jet pipe assembly (23). The gas is controlled by the jet pipe assembly (23) to enter the first gas injection channel (2116) and the second gas injection channel (2117) respectively, and is ignited and burned from the first flame hole (2114) and the second flame hole (2115) respectively. A denser flame is formed in the first flame hole (2114), and a fainter flame is formed in the second flame hole (2115).

5. A standard gas water heater according to claim 4, characterized in that: The gas control system assembly (4) is equipped with a gas distribution pipe and a proportional valve. The gas distribution pipe includes an inlet pipe and two outlet pipes. The two outlet pipes are respectively connected to the proportional valve, and the gas flow rate of the corresponding outlet pipe is controlled by the proportional valve. The proportional valve is connected to the main controller assembly (9) through a circuit.

6. A standard gas water heater according to claim 5, characterized in that: Standard gas water heaters have multiple heat load adjustment settings.

7. A standard gas water heater according to claim 1, characterized in that: The fan assembly (5) includes a centrifugal fan (51), an air distribution device (52), and a wind speed sensor. The air distribution device (52) is installed at the air outlet of the centrifugal fan (51), and the wind speed sensor is installed on the side of the air outlet of the air distribution device (52). The air distribution device (52) is used to make the centrifugal fan (51) produce air evenly when it is working. The wind speed sensor is used to detect the wind speed on the side of the air outlet of the air distribution device (52) and feed the wind speed signal back to the main controller assembly (9).

8. A standard gas water heater according to claim 7, characterized in that: The main controller assembly (9) compares the wind speed detected by the wind speed sensor with the set standard wind speed, outputs a compensation signal to the centrifugal fan (51), controls the centrifugal fan (51) to work, and makes the wind speed transmitted by the centrifugal fan (51) to the burner assembly (2) equal to the set standard wind speed.

9. A standard gas water heater according to claim 8, characterized in that: After the centrifugal fan (51) of the standard gas water heater is stable and equal to the set standard wind speed, the main controller assembly controls the centrifugal fan (51) to work in a stable flow and stable pressure state.

10. A standard gas water heater according to claim 7, characterized in that: The air distribution device (52) includes an air distribution plate (521), on which several sets of air distribution unit channels (522) for uniformly distributing the air are arrayed; the air distribution plate (521) is a metal plate with a uniformly distributed microporous structure.

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