CN210626067U - Simulated water resistance detection device of gas water heater - Google Patents
Simulated water resistance detection device of gas water heater Download PDFInfo
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- CN210626067U CN210626067U CN201921131940.9U CN201921131940U CN210626067U CN 210626067 U CN210626067 U CN 210626067U CN 201921131940 U CN201921131940 U CN 201921131940U CN 210626067 U CN210626067 U CN 210626067U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 598
- 238000001514 detection method Methods 0.000 title claims abstract description 47
- 230000001105 regulatory effect Effects 0.000 claims description 20
- 238000000034 method Methods 0.000 abstract description 9
- 238000010438 heat treatment Methods 0.000 description 20
- 238000005086 pumping Methods 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of performance detection of gas water heaters, and discloses a simulated water resistance detection device of a gas water heater, which comprises a water inlet pipe, a water outlet pipe, a gas inlet pipe and a water return pipe; the water inlet pipe is connected with a water inlet of the gas water heater, the water outlet pipe is connected with a water outlet of the gas water heater, the air inlet pipe is connected with an air inlet of the gas water heater, one end of the water return pipe is connected with the water outlet pipe, the other end of the water return pipe is connected with the water inlet of the gas water heater to form a water circulation pipeline, and the water circulation pipeline is provided with a simulated water resistance assembly for increasing water resistance of the water circulation pipeline. The utility model discloses a device can solve present zero cold water gas heater current testing platform's external circulation pipeline shorter at present, leads to the zero cold water gas heater of dispatching from the factory problem of zero cold water functional failure in the practical application process.
Description
Technical Field
The utility model belongs to the technical field of gas heater performance detects, concretely relates to gas heater's simulation water resistance detection device.
Background
Zero-cold-water gas water heaters have developed rapidly in recent years, and generally comprise a zero-cold-water gas water heater body, an air inlet pipe, a water outlet pipe and a water circulation pipeline for connecting the water outlet pipe and the water inlet pipe. Before leaving a factory, the zero-cold-water gas water heater needs to detect a water circulation pipeline thereof, so that the circulating heating function of the zero-cold-water gas water heater is ensured.
The existing detection platform for detecting the zero-cold-water gas water heater generally comprises an external water inlet pipe connected with a water inlet pipe of the water heater, an external water outlet pipe connected with a water outlet pipe of the water heater, an external air inlet pipe connected with an air inlet pipe of the gas water heater, and an external circulating pipeline connected with a water circulating pipeline of the water heater.
The length of an external circulation pipeline of an existing detection platform is about 2 meters generally, and in the actual use process of a zero-cold-water gas water heater, the external water circulation pipelines are long and even 100 meters long, so that the zero-cold-water gas water heater which is detected to leave a factory according to the length of the circulation pipeline is 2 meters.
SUMMERY OF THE UTILITY MODEL
In view of this, in order to solve the problem that the zero-cold-water function of the factory zero-cold-water gas water heater fails in the practical application process due to the fact that an external circulation pipeline of an existing detection platform of an existing zero-cold-water gas water heater is short, a simulated water resistance detection device of the gas water heater is provided.
A simulated water resistance detection device of a gas water heater comprises a water inlet pipe, a water outlet pipe, an air inlet pipe and a water return pipe;
the water inlet pipe is connected with a water inlet of the gas water heater, the water outlet pipe is connected with a water outlet of the gas water heater, the air inlet pipe is connected with an air inlet of the gas water heater, one end of the water return pipe is connected with the water outlet pipe, the other end of the water return pipe is connected with the water inlet of the gas water heater to form a water circulation pipeline, and the water circulation pipeline is provided with a simulated water resistance assembly for increasing water resistance of the water circulation pipeline.
Preferably, the simulated water resistance component comprises a simulated water resistance, and the simulated water resistance is arranged on the water circulation pipeline.
Preferably, the simulated water resistance assembly comprises a first pressure gauge and a second pressure gauge, and the simulated water resistance is arranged between the first pressure gauge and the second pressure gauge.
Preferably, a bypass pipe connected with the simulated water resistance assembly in parallel is arranged on the water circulation pipeline, and a bypass valve is arranged on the bypass pipe.
Preferably, the water circulation pipeline is further provided with a second flowmeter for detecting the water flow after passing through the simulated water resistance component, and the second flowmeter is positioned outside the bypass pipe.
Preferably, one end of the water inlet pipe, which is far away from the gas water heater, is provided with a water inlet valve, one end of the water outlet pipe, which is far away from the gas water heater, is provided with a water outlet valve, and one end of the air inlet pipe, which is far away from the gas water heater, is provided with an air inlet valve.
Preferably, a second water regulating valve used for regulating the water inlet pressure, a third pressure gauge used for detecting the water pressure in the water inlet pipe and a first flowmeter used for detecting the water flow in the water inlet pipe are sequentially arranged on the water inlet pipe along the water flow direction.
Preferably, one end of the water return pipe, which is close to the gas water heater, is provided with a first water return valve, the water return pipe is communicated with a connecting pipe arranged on the water inlet pipe, and the connecting pipe is provided with a second water return valve.
Preferably, the gas inlet pipe is sequentially provided with a gas regulating valve and a U-shaped pressure gauge along the gas flowing direction.
Compared with the prior art, the utility model discloses a gas heater's simulation water resistance detection device adopts above-mentioned scheme's beneficial effect to be:
water enters the gas water heater from the water inlet pipe, gas enters the gas water heater from the gas inlet pipe and is ignited in the gas water heater to heat cold water in the water heater, and the heated water flows out of the water outlet pipe to finish the detection of the conventional thermal performance of the gas water heater;
when needs carry out the circulation heating to gas heater and examine time measuring, built-in water pump operation in the gas heater takes out the water in the water circulation pipeline in the gas heater, because be provided with the simulation water resistance subassembly that is used for increasing water circulation pipeline water resistance on the water circulation pipeline, the water resistance increases in the water circulation pipeline this moment so, preheats in still can taking out the gas heater smoothly with the water in the water circulation pipeline if the built-in water pump of water heater this moment, just so avoids the process the utility model discloses a zero cold water gas heater that detection device detected appears built-in circulating pump and can not start in the practical application in-process to report trouble EP, the problem of zero cold water function failure.
Drawings
Fig. 1 is a schematic structural diagram of a simulated water resistance detection device of a gas water heater provided by an embodiment of the present invention.
In the figure: 1. a water inlet pipe; 2. a water outlet pipe; 3. an air inlet pipe; 4. a water return pipe; 51. simulating a water resistance component; 52. a bypass pipe; 53. a second flow meter; 511. a first pressure gauge; 512. simulating water resistance; 513. a second pressure gauge; 521. a bypass valve; 11. a water inlet valve; 12. a second water regulating valve; 13. a third pressure gauge; 14. a first flow meter; 15. a connecting pipe; 151. a second water return valve; 21. a water outlet valve; 31. an intake valve; 41. a first water return valve; 32. a gas regulating valve; 33. a U-shaped pressure gauge.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The embodiment provides a simulated water resistance detection device of a gas water heater, as shown in fig. 1, comprising a water inlet pipe 1, a water outlet pipe 2, an air inlet pipe 3 and a water return pipe 4;
the water inlet pipe 1 is connected with a water inlet of the gas water heater, the water outlet pipe 2 is connected with a water outlet of the gas water heater, the air inlet pipe 3 is connected with an air inlet of the gas water heater, one end of the water return pipe 4 is connected with the water outlet pipe, the other end of the water return pipe is connected with the water inlet of the gas water heater to form a water circulation pipeline, and the water circulation pipeline is provided with a simulated water resistance component 51 for increasing water resistance of the water circulation pipeline.
Water enters the gas water heater from the water inlet pipe 1, gas enters the gas water heater from the gas inlet pipe 3 and is ignited in the gas water heater to heat cold water in the water heater, and the heated water flows out from the water outlet pipe 2 to finish the detection of the conventional hot water performance of the gas water heater.
When the zero-cold-water gas water heater needs to be subjected to circulating heating detection, a built-in water pump in the zero-cold-water gas water heater operates to pump water in a water circulating pipeline back into the gas water heater, and because a simulated water resistance component 51 for increasing the water resistance of the water circulating pipeline is arranged on the water circulating pipeline, the water resistance in the water circulating pipeline is increased at the moment, if the built-in water pump of the water heater can still smoothly pump water in the water circulating pipeline back into the gas water heater for preheating, the problem that a built-in circulating pump cannot be started in the actual application process of the zero-cold-water gas water heater detected by the detection device of the embodiment is solved, so that a fault EP is reported, and the zero-cold-water function fails; if the built-in water pump in the zero-cold-water gas water heater cannot be started or water in the water circulation pipeline cannot be pumped back into the water heater, the zero-cold-water gas water heater is unqualified and cannot leave a factory.
The zero-cold-water gas water heater qualified through the simulated water resistance detection device of the embodiment can avoid the instant heating function of the zero-cold-water gas water heater from being limited by the length of the external circulating pipeline of the zero-cold-water gas water heater in the practical application process, and ensure that the built-in water pump of the zero-cold-water gas water heater can still smoothly operate even if the external circulating pipeline of the zero-cold-water gas water heater is too long, and the instant heating function can still be normally used.
In a specific embodiment, the simulated water resistance module 51 comprises a simulated water resistance 512, wherein the simulated water resistance 512 is arranged on the water circulation pipeline; the simulated water resistance 512 can change the resistance of the water in the circulation line. For example, when the circulation heating detection is carried out on a zero-cold water gas water heater, the resistance of water is increased by arranging the simulated water resistance 512 on a circulation pipeline with a limited length (2m), for example, the increased resistance is equivalent to the resistance of water in the circulation pipeline with 100 m;
the embodiment can realize the function of increasing the water resistance in the circulation pipeline by making the pressure difference exist between the two ends of the simulated water resistance 512, for example, the pressure difference of 0.06Mpa exists between the two ends of the simulated water resistance 512, because the increase of the water resistance is equivalent to the increase of the length of the circulation pipeline, for example, when the pressure difference of 0.06Mpa exists between the two ends of the simulated water resistance 512, the water resistance in the circulation pipeline is equivalent to the water resistance of the water in the circulation pipeline of 100m, which means that although the actual length of the circulation pipeline is 2m at this time, the water resistance in the circulation pipeline is actually equivalent to the water resistance generated by the circulation pipeline of 100m, if the simulated water resistance detection device of the embodiment is adopted to detect the circulation heating performance of the zero-cold-water gas water heater, it is equivalent to detect whether the circulation heating performance of the zero-cold-water gas water heater is qualified when the circulation pipeline is 100m, if the zero-, the detected zero-cold-water gas water heater can better avoid the problem that the instant heating function of the zero-cold-water gas water heater is limited by the length of an external circulating pipeline of the zero-cold-water gas water heater in practical application.
In a specific embodiment, the simulated water resistance module 51 further includes a first pressure gauge 511 and a second pressure gauge 513, and the simulated water resistance 512 is disposed between the first pressure gauge 511 and the second pressure gauge 513; the purpose of the first pressure gauge 511 and the second pressure gauge 513 is to better judge the magnitude of the pressure difference between the two ends of the simulated water resistance 512, and better simulate the water resistance; for example, when the simulated water resistance 512 is adjusted to make the pressure difference between the first pressure gauge 511 and the second pressure gauge 513 be 0.06MPa, it is indicated that the water resistance in the water circulation pipeline at this time is equivalent to the water resistance of the water circulation pipeline of 100 m; when the simulated water resistance 512 is adjusted to make the pressure difference between the first pressure gauge 511 and the second pressure gauge 513 be 0.03MPa, the water resistance in the water circulation pipeline at this time is equivalent to the water resistance of the water circulation pipeline of 50 m.
In the specific embodiment, a bypass pipe 52 connected in parallel with the simulated water resistance assembly 51 is arranged on the water circulation pipeline, and a bypass valve 521 is arranged on the bypass pipe;
when the water heater is subjected to conventional hot water performance detection, the water resistance of the water outlet pipe 2 does not need to be increased, so the bypass pipe 52 and the bypass valve 521 are arranged;
when the water heater is subjected to conventional hot water performance detection, the simulated water resistance is not required to be simulated, the regulated simulated water resistance 512 can be kept unchanged, and only the bypass valve 521 is opened.
In the specific embodiment, a second flow meter 53 is further arranged on the water circulation pipeline, and the second flow meter 53 is positioned outside the bypass pipe 52; the second flow meter 53 is used for detecting the water flow after the water resistance is increased, for example, the flow rate of the second flow meter 53 reaches 4L/min after the instant heating function of the water heater is started.
In a specific embodiment, a water inlet valve 11 is arranged at one end of the water inlet pipe 1 away from the zero-cold water gas water heater, a water outlet valve 21 is arranged at one end of the water outlet pipe 2 away from the zero-cold water gas water heater, and an air inlet valve 31 is arranged at one end of the air inlet pipe 3 away from the zero-cold water gas water heater;
when the conventional hot water performance detection is performed on the water heater, the water inlet valve 11, the water outlet valve 21, the air inlet valve 31 and the bypass valve 521 are all opened, other valves are all closed, water enters the water heater from the water inlet pipe 1 through the water inlet valve 11, gas enters the water heater from the air inlet pipe 3 through the air inlet valve 31 and is combusted in the water heater, the cold water entering from the water inlet pipe 1 in the water heater is heated, and the heated cold water is changed into hot water and then flows out from the water outlet pipe 2 through the bypass pipe 52, the bypass valve 521 and the water outlet valve 21, so that the conventional hot water performance detection of the water heater is.
In a specific embodiment, a second water regulating valve 12 for regulating the pressure of inlet water, a third pressure gauge 13 for detecting the water pressure in the inlet pipe 1 and a first flowmeter 14 for detecting the water flow in the inlet pipe 1 are sequentially arranged on the inlet pipe 1 along the water flow direction;
the current gas water heater also has a waterfall bath function, when a user of the water outlet pipe 2 carries out waterfall bath, the flow lifting amplitude on the water inlet pipe 1 is required to be increased, for example, at least 3L/min needs to be increased, at this time, the flow detection of the water heater needs to be increased, and the flow detection increasing process of the embodiment is as follows:
opening the water inlet valve 11, the water outlet valve 21 and the air inlet valve 31, closing all other valves, simultaneously adjusting the simulated water resistance 512 to generate the water resistance, adjusting the second water regulating valve 12 to enable the first flow meter 14 to detect that the water outlet flow reaches 8L/min, starting the waterfall bath function of the gas water heater, and recording the increase of the flow value of the first flow meter 14 at the moment, wherein the increase amplitude reaches 3L/min or not; when the water temperature reaches 3L/min, the waterfall bath function of the water heater is qualified; if not, the waterfall bath function of the water heater is not qualified.
In the specific embodiment, a first water return valve 41 is disposed at one end of the water return pipe 4 adjacent to the zero-cold-water gas water heater, the water return pipe 4 is communicated with a connecting pipe 15 disposed at the water inlet pipe 1, and a second water return valve 151 is disposed on the connecting pipe 15. The first water return valve 41 and the second water return valve 151 can be adjusted by matching with the water inlet valve 11, the water outlet valve 21 and other valves to realize the cyclic heating detection of the water heater.
After the simulated water resistance 512 is adjusted, the water resistance of the water circulation pipeline is increased, the water outlet valve 21, the bypass valve 521 and the second water return valve 151 are closed, because the water outlet valve 21 is closed, an external water source cannot enter the water inlet pipe 1 any more, the water inlet valve 11 and the first water return valve 41 are opened at the same time, the instant heating function of the zero-cold-water gas water heater is started, the water pump in the water heater operates, at the moment, the water pre-stored in the water inlet pipe 1 and the water pre-stored in the water circulation pipeline are pumped back into the water heater by the built-in water pump of the water heater, and after being heated, the water flows to the water circulation pipeline again to form a preheating circulation loop, so that.
After the simulated water resistance 512 is adjusted, the water resistance of the water circulation pipeline is increased, the water outlet valve 21, the bypass valve 521 and the first water return valve 41 are closed, because the water outlet valve 21 is closed, an external water source cannot enter the water inlet pipe 1 again, the water inlet valve 11 and the second water return valve 151 are opened at the same time, the instant heating function of the zero-cold-water gas water heater is started, the water pump in the water heater operates, at the moment, water pre-stored in the water inlet pipe 1 is directly pumped into the gas water heater, the water pre-stored in the water circulation pipeline is pumped into the gas water heater through the connecting pipe 15 to be heated again, and the heated water returns to the water circulation pipeline again, so that the cyclic heating detection of the water heater is realized.
In a specific embodiment, the gas inlet pipe 3 is sequentially provided with a gas regulating valve 32 and a U-shaped pressure gauge 33 along the gas flowing direction, the gas regulating valve 32 is used for regulating the flow rate of the gas entering the combustor, and the U-shaped pressure gauge 33 is used for detecting the pressure of the gas entering the combustor to avoid the pressure from being too large or too small.
The working process is as follows:
when the simulated water resistance detection device of the embodiment is required to be used for detecting the conventional hot water performance of a water heater, firstly, the water inlet pipe 1 of the embodiment is connected with the water inlet pipe of the gas water heater, the water outlet pipe 2 is connected with the water outlet pipe of the gas water heater, and the air inlet pipe 3 is connected with the air inlet pipe of the gas water heater; then, the water inlet valve 11, the water outlet valve 21, the air inlet valve 31, the bypass valve 521, the second water regulating valve 12 and the gas regulating valve 32 are all opened, and simultaneously the first water return valve 41, the second water return valve 151 and the simulated water resistor 512 are all closed, so that water enters the gas water heater from the water inlet pipe 1, gas enters the gas water heater from the air inlet pipe 3 and is ignited in the gas water heater, cold water flowing into the gas water heater from the water inlet pipe 1 is heated, heated hot water flows out of the water outlet pipe 2 through the water inlet end of the water outlet pipe 2, the bypass pipe 52 and the water outlet valve 21, and conventional hot water performance detection of the water heater is realized.
When the simulated water resistance detection device of the embodiment is required to be used for carrying out circulating heating detection on a zero-cold water heater, the following two situations are adopted:
when the zero-cold-water gas water heater is provided with only one water inlet, firstly, the water inlet pipe 1 of the embodiment is connected with the water inlet of the gas water heater, the water outlet pipe 2 is connected with the water outlet of the gas water heater, and the air inlet pipe 3 is connected with the air inlet of the gas water heater; then, the simulated water resistance 512 is adjusted, so that a pressure difference exists between the first pressure gauge 511 and the second pressure gauge 513, for example, the pressure difference is 0.06MPa, and the water resistance of the water circulation pipeline is increased at the moment; closing the water outlet valve 21, the bypass valve 521 and the first water return valve 41, so that an external water source cannot enter the water inlet pipe 1 again because the water outlet valve 21 is closed, and opening the water inlet valve 11 and the second water return valve 151; and finally, starting the instant heating function of the zero-cold-water gas water heater, operating a water pump in the water heater, directly pumping the water prestored in the water inlet pipe 1 back into the gas water heater, pumping the water prestored in the water circulation pipeline back into the gas water heater together with the water in the water inlet pipe 1 through the connecting pipe 15 for reheating, and returning the heated water back into the water circulation pipeline again to realize the cyclic heating detection of the water heater.
When the zero-cold-water gas water heater has two water inlets, firstly, the water inlet pipe 1 of the embodiment is connected with one water inlet of the gas water heater, the water outlet pipe 2 is connected with the water outlet of the gas water heater, the air inlet pipe 3 is connected with the air inlet of the gas water heater, and one end of the water return pipe 4 is connected with the other water inlet of the zero-cold-water gas water heater; then, the simulated water resistance 512 is adjusted, so that a pressure difference exists between the first pressure gauge 511 and the second pressure gauge 513, for example, the pressure difference is 0.06MPa, and the water resistance of the water circulation pipeline is increased at the moment; closing the outlet valve 21, the bypass valve 521 and the second water return valve 151, so that an external water source cannot enter the water inlet pipe 1 again because the outlet valve 21 is closed, and opening the water inlet valve 11 and the first water return valve 41; and finally, starting the instant heating function of the zero-cold-water gas water heater, operating a water pump in the water heater, directly pumping the water pre-stored in the water inlet pipe 1 into the water heater, directly pumping the water pre-stored in the water circulation pipeline back into the water heater, returning the water back into the water heater, heating the water to form hot water, and then flowing to the water circulation pipeline to form a preheating circulation loop so as to realize the circulating heating detection of the water heater.
When the simulated water resistance detection device of the embodiment is required to be used for carrying out pressurization flow detection on a zero-cold water heater, firstly, the water inlet pipe 1 of the embodiment is connected with the water inlet pipe of a gas water heater, the water outlet pipe 2 is connected with the water outlet pipe of the gas water heater, and the air inlet pipe 3 is connected with the air inlet pipe of the gas water heater; then, the simulated water resistance 512 is adjusted, so that a pressure difference exists between the first pressure gauge 511 and the second pressure gauge 513, for example, the pressure difference is 0.06MPa, and the water resistance of the water circulation pipeline is increased at the moment; then, opening the water inlet valve 11, the water outlet valve 21, the air inlet valve 31 and the gas regulating valve 32, closing the first water return valve 41, the second water return valve 151 and the bypass valve 521, and simultaneously regulating the second water regulating valve 12 until the water outlet flow of the first flow meter 14 reaches 8L/min, starting the waterfall bath function of the gas water heater, checking whether the flow prompting amplitude of the first flow meter 14 at the moment reaches 3L/min, and if so, indicating that the waterfall bath function of the water heater is qualified; if the flow rate does not reach the target value, the waterfall bath function of the water heater is not qualified, and the flow rate increasing detection of the water heater is completed.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A simulated water resistance detection device of a gas water heater is characterized by comprising a water inlet pipe (1), a water outlet pipe (2), an air inlet pipe (3) and a water return pipe (4);
the water inlet pipe (1) is connected with a water inlet of the gas water heater, the water outlet pipe (2) is connected with a water outlet of the gas water heater, and the air inlet pipe (3) is connected with an air inlet of the gas water heater; one end of the water return pipe (4) is connected with the water outlet pipe (2), the other end of the water return pipe is connected with a water inlet of the gas water heater to form a water circulation pipeline, and a simulated water resistance component (51) used for increasing the water resistance of the water circulation pipeline is arranged on the water circulation pipeline.
2. The simulated water resistance detection device of a gas water heater as claimed in claim 1, wherein said simulated water resistance assembly (51) comprises a simulated water resistance (512), said simulated water resistance (512) being disposed on said water circulation line.
3. The simulated water resistance detection device of the gas water heater as claimed in claim 2, wherein said simulated water resistance component (51) further comprises a first pressure gauge (511) and a second pressure gauge (513), said simulated water resistance (512) being disposed between said first pressure gauge (511) and said second pressure gauge (513).
4. The simulated water resistance detection device of the gas water heater as claimed in any one of claims 1-3, wherein a bypass pipe (52) connected in parallel with the simulated water resistance assembly (51) is arranged on the water circulation pipeline, and a bypass valve (521) is arranged on the bypass pipe.
5. The simulated water resistance detection device of the gas water heater as claimed in claim 4, wherein a second flow meter (53) for detecting the flow rate of water after passing through the simulated water resistance assembly (51) is further provided on the water circulation pipeline, and the second flow meter (53) is located outside the bypass pipe (52).
6. The simulated water resistance detection device of the gas water heater as claimed in any one of claims 1-3, wherein a water inlet valve (11) is arranged at one end of the water inlet pipe (1) far away from the gas water heater, a water outlet valve (21) is arranged at one end of the water outlet pipe (2) far away from the gas water heater, and an air inlet valve (31) is arranged at one end of the air inlet pipe (3) far away from the gas water heater.
7. The simulated water resistance detection device of the gas water heater as claimed in any one of claims 1-3, wherein a second water regulating valve (12) for regulating the pressure of the inlet water, a third pressure gauge (13) for detecting the water pressure in the inlet water pipe (1), and a first flowmeter (14) for detecting the water flow in the inlet water pipe (1) are sequentially arranged on the inlet water pipe (1) along the water flow direction.
8. The simulated water resistance detection device of the gas water heater as claimed in any one of claims 1-3, wherein a first water return valve (41) is arranged at one end of the water return pipe (4) adjacent to the gas water heater, the water return pipe (4) is communicated with a connecting pipe (15) arranged on the water inlet pipe (1), and a second water return valve (151) is arranged on the connecting pipe (15).
9. The simulated water resistance detection device of the gas water heater as claimed in claim 1, wherein a gas regulating valve (32) and a U-shaped pressure gauge (33) are sequentially arranged on the gas inlet pipe (3) along the gas circulation direction.
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| CN110361214A (en) * | 2019-07-18 | 2019-10-22 | 华帝股份有限公司 | Simulated water resistance detection device of gas water heater |
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| CN110361214A (en) * | 2019-07-18 | 2019-10-22 | 华帝股份有限公司 | Simulated water resistance detection device of gas water heater |
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