CN211290575U - External control module of gas water heater and gas water heater system thereof - Google Patents
External control module of gas water heater and gas water heater system thereof Download PDFInfo
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- CN211290575U CN211290575U CN201921330838.1U CN201921330838U CN211290575U CN 211290575 U CN211290575 U CN 211290575U CN 201921330838 U CN201921330838 U CN 201921330838U CN 211290575 U CN211290575 U CN 211290575U
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Abstract
The utility model provides a gas heater external control module. The utility model provides a gas heater external control module, wherein, including connecting pipe, external controller and establish respectively at the connecting pipe both ends and with the hot water communicating pipe and the cold water communicating pipe of connecting pipe intercommunication, be equipped with water accuse valve, first water flow sensor and first temperature sensor on the connecting pipe, be equipped with second water flow sensor on the hot water communicating pipe, water accuse valve, first water flow sensor, first temperature sensor and second water flow sensor all with external controller electric connection. The utility model also provides a gas heater system of having above-mentioned external control module. The utility model can realize that the water in the cold water pipe is not needed to be preheated in the circulating preheating process of the water way system without the return water pipe, and the water in the hot water pipe is only needed to be preheated, thereby effectively saving the fuel gas and the preheating time for preheating the hot water; and the problem that domestic water conflicts with circulating preheating frequently in the preheating process can be solved.
Description
Technical Field
The utility model relates to a gas heater technical field, more specifically relates to a gas heater external control module and gas heater system thereof.
Background
At present, the circulation preheating gas water heater has many defects in the household use process, particularly for relatively common users without a return water pipe, although the function of quickly discharging hot water is realized through the circulation preheating function, the cold water pipe and the hot water pipe are directly communicated in the industry because the return water pipe is not arranged in a pipeline system of the users without the return water pipe and only comprises the cold water pipe and the hot water pipe, the cold water pipe can be used as the return water pipe in the circulation preheating process, so that the water in the cold water pipe is also preheated simultaneously in the preheating process, and the domestic water and the circulation preheating conflict frequently in the preheating process, thereby influencing the daily domestic water of the users.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome present water heater and lead to the water in the cold water pipe also to be preheated simultaneously at the circulation in-process of preheating for domestic water preheats often to take place the conflict with the circulation, influences the defect of user's daily life water, provides a gas heater external control module and gas heater system thereof. The utility model has simple structure and convenient use, can realize that the water in the cold water pipe does not need to be preheated in the circulating preheating process of the water-return-pipe-free waterway system, and saves the preheating time and the fuel gas; and the problem that domestic water conflicts with circulating preheating frequently in the preheating process can be solved.
In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a gas heater external control module, wherein, includes connecting pipe, external controller and establishes respectively the connecting pipe both ends and with the hot water communicating pipe and the cold water communicating pipe of connecting pipe intercommunication, be equipped with water accuse valve, first water flow sensor and first temperature sensor on the connecting pipe, water accuse valve first water flow sensor and first temperature sensor all with external controller electric connection. The whole external control module can be connected between a hot water pipe and a cold water pipe of the gas water heater system through the hot water communicating pipe and the cold water communicating pipe, preferably between the hot water pipe and the cold water pipe at the water using point farthest away from the water heater, namely the farthest water using point; therefore, the water heater, the hot water pipe, the hot water communicating pipe, the connecting pipe, the cold water communicating pipe and the cold water pipe of the water heater can form a circulating pipeline to realize circulating preheating.
Furthermore, the connecting pipe is also provided with a one-way valve, the one-way valve is arranged at the downstream of the water control valve along the water flow direction, the one-way valve can ensure that the water flow direction in the circulating pipeline always flows from the hot water pipe to the cold water pipe, so that the water in the cold water pipe is prevented from flowing to the hot water pipe through the connecting pipe, the failure of the water control valve caused by the reverse impact of the water pressure on the water control valve can be effectively reduced, and the service life of the water control valve is prolonged; the water control valve on the connecting pipe is initially in a closed state and can be opened by electrifying, and the opening and closing of the water control valve are controlled by an external controller; the first temperature sensor and the first water flow sensor are used for detecting the temperature and the water flow of the water flow in the connecting pipe respectively and transmitting the detected data to the external controller.
Furthermore, a first node and a second node are respectively arranged at two ends of the hot water communicating pipe, the first node and the second node are respectively used for connecting a hot water pipe of the water heater and a hot water side of a water consumption point of the water heater, and a third node is arranged in the middle of the hot water communicating pipe; a fourth node and a fifth node are respectively arranged at two ends of the cold water communicating pipe and are respectively used for connecting a cold water pipe of the water heater and the cold water side of a water consumption point of the water heater, and a sixth node is arranged in the middle of the cold water communicating pipe; and two ends of the connecting pipe are respectively connected with the third node of the hot water communicating pipe and the sixth node of the cold water communicating pipe.
Furthermore, a second water flow sensor is arranged on the hot water communicating pipe, and the second water flow sensor is arranged between the first node and the third node on the hot water communicating pipe, or the second water flow sensor is arranged between the second node and the third node on the hot water communicating pipe. The second water flow sensor is electrically connected with the external controller and used for detecting water flow in the hot water communicating pipe and transmitting the detected data to the external controller.
The utility model also provides a gas water heater system with above-mentioned external control module, including the water heater, with the water route system that the water heater is connected and respectively for the water heater and the circuit system that the water route system provided the electric energy, the water route system includes cold water pipe, hot-water line and connects simultaneously at least one point of using water of cold water pipe and hot-water line, hot-water line one end is connected the play water side of water heater, the other end is connected the point of using water, cold water pipe one end is connected the external water source, and the other end divides two branches, and first branch is connected the water inlet side of water heater, and the second branch is connected the point of using water, wherein, is equipped with above-mentioned external control module at the farthest point of using water apart from the water heater, the first node connection of external control module's hot water communicating pipe, the second node connection the hot-water side of farthest point of using water, the fourth node of the cold water communicating pipe of the external control module is connected with the cold water pipe, the fifth node is connected with the cold water side of the farthest water using point, the water inlet side of the water heater is provided with a water pump, a main controller is arranged inside the water heater, the external controller of the external control module is electrically connected with the main controller, and the water heater and the external control module are controlled by the main controller. The water heater, the hot water pipe, the hot water communicating pipe, the connecting pipe, the cold water communicating pipe and the cold water pipe form a circulating pipeline loop, a water control valve, a first water flow sensor and a first temperature sensor which are controlled by an external controller are arranged on the connecting pipe, the external controller and the water control valve can open and close the circulating pipeline, and the first temperature sensor can detect the water flow temperature in the pipeline of the connecting pipe. When the user is not using water at the water consumption point, the external control module can open the circulating pipeline, so that the water heater preheats the water flow in the hot water pipe, hot water can be quickly obtained when the user opens the water tap at the water consumption point to use hot water, and the hot water outlet time is greatly shortened. And when the user uses water at the water consumption point in the preheating process, the external control module can close the circulating pipeline through the external controller to stop preheating, so that the problem that the domestic water conflicts with the circulating preheating in the preheating process is effectively avoided. In addition, because the external control module is arranged at the farthest water using point, when the water flow at the connecting pipe is detected to reach the preheating temperature, the water flow in the whole hot water pipe reaches the preheating temperature, the circulation pipeline is closed at the moment, so that the hot water in the connecting pipe can be effectively prevented from flowing into the cold water pipe, in the preheating process of the water heater, the water flow in the pipeline before preheating is smaller, because the preheating process is usually shorter, the water flow in the pipeline before the water flow of the hot water pipe of the water heater reaches the preset water outlet temperature is larger, when the temperature of the first temperature sensor at the connecting pipe is close to the preset temperature (the preset temperature is usually higher than the detection temperature of the first temperature sensor at the connecting pipe), the water flow in the connecting pipe is smaller at the moment, and the excessive hot water in the hot water pipe can be effectively prevented.
Further, the inside inlet tube, heat exchanger and the outlet pipe that connect gradually the setting along the rivers direction that still is equipped with of water heater, the water pump is established on the inlet tube, be equipped with second temperature sensor on the outlet pipe, water pump and second temperature sensor respectively with main control unit electric connection. The second temperature sensor can detect the temperature of rivers after the heat exchanger heating to data transfer after will detecting gives main control unit.
Furthermore, be equipped with the display operation panel on the water heater, the display operation panel with main control unit electric connection. The display operation panel is provided with a display, an on-off key, a preheating function key, a temperature rising key and a temperature lowering key, the display operation panel can control the water heater to be turned on and off, the preheating function can be selected, the preset water outlet temperature can be adjusted, and the display displays the preset temperature and other information of the water outlet point of a user.
Furthermore, a water inlet nozzle is arranged on the water inlet side of the water heater, one end of the water inlet nozzle is connected with the water inlet pipe, and the other end of the water inlet nozzle is connected with a first branch of the cold water pipe; and a water outlet nozzle is arranged on the water outlet side of the water heater, one end of the water outlet nozzle is connected with the water outlet pipe, and the other end of the water outlet nozzle is connected with the hot water pipe.
Furthermore, the circuit system comprises a household socket connected with an external power supply, the household socket is electrically connected with the external power supply, and the water heater and the external control module are connected with a household socket power line.
Furthermore, each water using point is provided with a water mixing valve, and each water mixing valve comprises a cold water end and a hot water end; at the farthest end water using point, the second node of the hot water communicating pipe is connected with the hot water end of the water mixing valve, and the fifth node of the cold water communicating pipe is connected with the cold water end of the water mixing valve; and at other water consumption points, the cold water end of the water mixing valve is connected with the cold water pipe, and the hot water end of the water mixing valve is connected with the hot water pipe.
The utility model also provides a control method of gas heater system, wherein, including following step:
s1, when a user does not use hot water, turning on a switch key on a display operation panel, selecting a preheating function through the display operation panel, and adjusting the preset outlet water temperature of a water point for the user through a temperature rising key and a temperature lowering key on the display operation panel;
s2, the main controller judges whether the water heater reaches a preheating starting condition by controlling the external controller to read the detection data of the first temperature sensor, namely whether the temperature of water flow in the connecting pipe is lower than the preheating temperature, and when the temperature of the water flow in the connecting pipe is lower than the preheating temperature, the step S3 is carried out; otherwise, the water control valve keeps an initial closing state, and the whole system does not execute any operation;
and S3, the main controller executes a preheating program, the water control valve is opened, the water pump starts to work, water in a circulating pipeline formed by the water heater, the hot water pipe, the hot water communicating pipe, the connecting pipe, the cold water communicating pipe and the cold water pipe flows in the circulating pipeline, the water heater is ignited for preheating, when the water flow temperature T detected by the first temperature sensor in the external control module reaches the preheating temperature, the water flow preheating temperature of the connecting pipe is usually 1-5 ℃ lower than the preset water outlet temperature of a water outlet point of a user, the water pump stops working, the water heater stops preheating, and the water control valve is reset and closed.
Further, the step S3 specifically includes the following steps:
s31, the main controller executes a preheating program, the water control valve is opened, the water pump starts to work, water in a circulating pipeline formed by the water heater, the hot water pipe, the hot water communicating pipe, the connecting pipe, the cold water communicating pipe and the cold water pipe flows in the circulating pipeline, at the moment, the water temperature in the circulating pipeline is t1 of the water flow in the cold water pipe, and the water flow in the pipeline is q 1;
s32, igniting and preheating the water heater, and increasing the water flow in the circulating pipeline to q2 when the water flow temperature T' detected by a second temperature sensor on a water outlet pipe of the water heater reaches T2, wherein T2 is greater than T1, T2 can be set to be 5-10 ℃ higher than T1, for example, T1 is 20 degrees, and T2 can be set to be 25 degrees;
s33, the water heater is continuously preheated, and when the preheating temperature t3 detected by the external control module and corresponding to the preset outlet water temperature set by the water heater is 1-2 ℃, the water flow in the circulating pipeline is reduced to q3, wherein q3 can be the same as or different from q 1;
and S34, when the water flow temperature detected by the first temperature sensor in the external control module reaches a preheating temperature t3 corresponding to the preset outlet water temperature set by the water heater, stopping the water pump from working, stopping preheating the water heater, and resetting and closing the water control valve.
Like this, when main control unit carried out preheating program, the discharge in the circulating line was earlier little, the back is big, then diminishes again, and it is more accurate to make the preheating temperature that rivers in the hot-water line reached, effectively guarantees that connecting pipe department hot water flows into the hot water of cold water pipe still less, improves the preheating efficiency of water heater. The change of the water flow in the circulating pipeline can be realized by changing the rotating speed and the power of the water pump, and can also be realized by arranging a proportional valve on the circulating pipeline. In addition, because the water flow in the circulating pipeline circularly flows in the preheating process, the water flow still has certain momentum at the moment of stopping preheating; therefore, when the water flow temperature T detected by the first temperature sensor in the external control module reaches the preheating temperature corresponding to the preset water outlet temperature of the water heater and is lower than 1-2 ℃, the water flow in the circulating pipeline is reduced firstly, when the water flow temperature T detected by the first temperature sensor reaches the corresponding preheating temperature, the water pump is controlled to stop working, the water heater stops preheating, the water control valve is reset and closed, the problems that the water pump is stopped and the water control valve is closed when the corresponding preheating temperature is just detected when the circulating flow is large, and part of water in the hot water pipe reaching the preheating temperature enters the cold water pipe due to the impact of the water flow can be effectively solved.
Further, in the step S3, during the cyclic preheating process, the water flow detected by the first water flow sensor is Q1, and the water flow detected by the second water flow sensor is Q2; if the user does not use hot water at a water using point, theoretically, Q1 is Q2, Q2 is slightly larger than Q1 in the actual using process, if the user starts the water using point to use hot water, the water flow Q1 of the first water flow sensor is reduced certainly, the water flow Q2 of the second water flow sensor is increased, Q2-Q1 is delta Q, when the delta Q is larger than or equal to a certain preset value, the main controller judges that the user uses hot water in the circulating preheating process, the main controller controls the water pump to stop working at the moment, the power consumption of the water heater is reduced, and the water heater enters a common or pressurizing bathing heating mode to provide comfortable bathroom water for the user; when the delta Q is smaller than the preset value and the water flow temperature T detected by the first temperature sensor is smaller than the preheating temperature, the user does not use hot water, and the main controller continues to execute the circulating preheating until the water flow temperature T detected by the first temperature sensor is larger than or equal to the preheating temperature. The preset value of the delta Q can be determined through experiments in the circulation flow preheating process, for example, the preset value of the delta Q is 1L/min, and when the delta Q is larger than or equal to 1L/min, the user is judged to use hot water in the circulation preheating process.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a set up external control module between hot-water line and the cold water pipe of user's furthest water consumption department, realized that no return water route system circulation preheats the in-process and need not to preheat the cold water pipe, only need preheat the water in the hot-water line, can effectually sparingly preheat hydrothermal gas and preheat time.
The utility model discloses a set up first water flow sensor and second water flow sensor on external control module, contrast the difference of the discharge that first water flow sensor and second water flow sensor detected with preset value and can accurately judge whether the user uses hot water at the water spot, and then whether accurate control is opened and is preheated the procedure, effectively avoids using domestic water and circulation to preheat the problem that the pipeline water route takes place the conflict in preheating the in-process.
Drawings
Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present invention.
Fig. 2 is a schematic view of the overall structure of embodiment 2 of the present invention.
In the figure, 1-connecting pipe, 2-external controller, 3-hot water communicating pipe, 4-cold water communicating pipe, 5-water control valve, 6-first water flow sensor, 7-first temperature sensor, 8-check valve, 9-second water flow sensor, 10-water heater, 11-water channel system, 12-circuit system, 13-cold water pipe, 14-hot water pipe, 15-water consumption point, 16-external control module, 17-water pump, 18-main controller, 19-water inlet pipe, 20-heat exchanger, 21-water outlet pipe, 22-second temperature sensor, 23-display operation panel, 24-water inlet nozzle, 25-water outlet nozzle, 31-first node, 32-second node, 33-third node, 41-fourth node, 42-fifth node, 43-sixth node, 121-household socket, 151-cold water end, 152-hot water end, 153-farthest water consumption point.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
Example 1
As shown in fig. 1, an external control module for a gas water heater, wherein, including connecting pipe 1, external controller 2, and establish respectively at connecting pipe 1 both ends and with connecting pipe 1 intercommunication hot water communicating pipe 3 and cold water communicating pipe 4, be equipped with water accuse valve 5 on connecting pipe 1, first water flow sensor 6, first temperature sensor 7 and check valve 8, be equipped with second water flow sensor 9 on the hot water communicating pipe 3, water accuse valve 5, first water flow sensor 6, first temperature sensor 7 and second water flow sensor 9 all with external controller 2 electric connection. The whole external control module can be connected between a hot water pipe and a cold water pipe of the gas water heater system through the hot water communicating pipe 3 and the cold water communicating pipe 4, and preferably between the hot water pipe and the cold water pipe at the water using point farthest away from the water heater; therefore, the water heater, the hot water pipe of the water heater, the hot water communicating pipe 3, the connecting pipe 1, the cold water communicating pipe 4 and the cold water pipe of the water heater can form a circulating pipeline to realize circulating preheating. The check valve 8 is arranged at the downstream of the water control valve 5 along the water flow direction, the check valve 8 ensures that the water flow direction in the circulating pipeline always flows from the hot water pipe to the cold water pipe, the failure of the water control valve 5 caused by the reverse impact of the water pressure on the water control valve 5 is reduced, and the service life of the water control valve 5 is prolonged; the water control valve 5 is in a closed state initially, can be opened when being electrified, and the opening and closing of the water control valve 5 are controlled by the external controller 2; the first temperature sensor 7 and the first water flow rate sensor 6 are used to detect the temperature and the water flow rate of the water in the connecting pipe 1, respectively, and the second water flow rate sensor 9 is used to detect the water flow rate in the hot water communication pipe 3, and transmit the detected data to the external controller 2.
As shown in fig. 1, a first node 31 and a second node 32 are respectively arranged at two ends of the hot water communicating pipe 3, the first node 31 and the second node 32 are respectively used for connecting a hot water pipe of a water heater and a hot water side of a water point for the water heater, and a third node 33 is arranged in the middle of the hot water communicating pipe 3; a fourth node 41 and a fifth node 42 are respectively arranged at two ends of the cold water communicating pipe 4, the fourth node 41 and the fifth node 42 are respectively used for connecting a cold water pipe of a water heater and a cold water side of a water point for the water heater, and a sixth node 43 is arranged in the middle of the cold water communicating pipe 4; both ends of the connection pipe 1 are connected to the third node 33 of the hot water communication pipe 3 and the sixth node 43 of the cold water communication pipe 4, respectively.
As shown in fig. 1, the second water flow sensor 9 is provided between the first node 31 and the third node 33 on the hot water communication pipe 3, or the second water flow sensor 9 is provided between the second node 32 and the third node 33 on the hot water communication pipe 3.
Example 2
As shown in fig. 2, a gas water heater system comprises a water heater 10, a water path system 11 connected to the water heater 10, and a circuit system 12 for providing electric power to the water heater 10 and the water path system 11, wherein the water path system 11 comprises a cold water pipe 13, a hot water pipe 14, and at least one water consumption point 15 for connecting the cold water pipe 13 and the hot water pipe 14 at the same time, one end of the hot water pipe 14 is connected to the water outlet side of the water heater 10, the other end of the hot water pipe is connected to the water consumption point 15, one end of the cold water pipe 13 is connected to an external water source, the other end of the cold water pipe is divided into two branches, a first branch is connected to the water inlet side of the water heater 10, a second branch is connected to the water consumption point 15, wherein the external control module 16 described in embodiment 1 is disposed at the water consumption point 15 farthest from the water heater 10 (i.e. at the farthest water consumption point 153), a first node 31 of a hot water pipe, the fourth node 41 of the cold water communicating pipe 4 of the external control module 16 is connected with the cold water pipe 13, the fifth node 42 is connected with the cold water side of the farthest water using point 153, the water inlet side of the water heater 10 is provided with the water pump 17, the main controller 18 is arranged inside the water heater 10, the external controller 2 of the external control module 16 is electrically connected with the main controller 18, and the water heater 10 and the external control module 16 are controlled by the main controller 18. The water heater 10, the hot water pipe 14, the hot water communicating pipe 3, the connecting pipe 1, the cold water communicating pipe 4 and the cold water pipe 13 form a circulating pipeline loop, the connecting pipe 1 is provided with a water control valve 5 controlled by the external controller 2, a first water flow sensor 6 and a first temperature sensor 7, the external controller 2 and the water control valve 5 can open and close the circulating pipeline loop according to actual needs, and the first temperature sensor 7 can detect the water flow temperature in the pipeline of the connecting pipe 1. When the user does not use water at the water consumption point 15, the external control module 16 can start the circulation pipeline to preheat the water flow in the hot water pipe 14, so that hot water can be quickly obtained when the user starts a faucet at the water consumption point 15 to use hot water, and the hot water discharging time is greatly shortened. And when the user uses water at the water consumption point 15 in the preheating process, the external control module 16 can close the circulating pipeline through the external controller 2 to stop preheating, so that the problem that the domestic water conflicts with the circulating preheating in the preheating process is effectively avoided. In addition, since the external control module 16 is disposed at the farthest water consumption point 153, when it is detected that the water flow at the connection pipe 1 reaches the preheating temperature, the water flow in the whole hot water pipe 14 has already reached the preheating temperature, and at this time, closing the circulation pipeline can effectively prevent the hot water in the connection pipe 1 from flowing into the cold water pipe 13, and has little influence on the water flow temperature in the whole cold water pipe 13.
As shown in fig. 2, a water inlet pipe 19, a heat exchanger 20 and a water outlet pipe 21 are further arranged inside the water heater 10, the water inlet pipe 19, the heat exchanger 20 and the water outlet pipe 21 are sequentially connected and arranged along a water flow direction, the water pump 17 is arranged on the water inlet pipe 19, the water outlet pipe 21 is provided with a second temperature sensor 22, and the water pump 17 and the second temperature sensor 22 are respectively electrically connected with the main controller 18. The second temperature sensor 22 is capable of detecting the temperature of the water stream heated by the heat exchanger 20 and transmitting the detected data to the main controller 18.
As shown in fig. 2, the water heater 10 is provided with a display operation panel 23, and the display operation panel 23 is electrically connected to the main controller 18. The display operation panel 23 is provided with a display, an on-off key, a preheating function key, a temperature rising key and a temperature falling key, the display operation panel 23 can control the water heater 10 to be turned on and off, the preheating function can be selected, the preset water outlet temperature can be adjusted, and the display displays the preset temperature and other information of the water outlet point of a user.
As shown in fig. 2, a water inlet nozzle 24 is arranged on the water inlet side of the water heater 10, one end of the water inlet nozzle 24 is connected with the water inlet pipe 19, and the other end is connected with a first branch of the cold water pipe 13; the water outlet side of the water heater 10 is provided with a water outlet nozzle 25, one end of the water outlet nozzle 25 is connected with the water outlet pipe 21, and the other end is connected with the hot water pipe 14.
As shown in fig. 2, the circuit system 12 includes a household socket 121 connected to an external power source, the household socket 121 is electrically connected to the external power source, and the water heater 10 and the external control module 16 are both connected to the household socket 121 via a power line.
As shown in fig. 2, each water consumption point 15 is provided with a water mixing valve, and the water mixing valve comprises a cold water end 151 and a hot water end 152; at the farthest water using point 153, the second node 32 of the hot water communication pipe 3 is connected to the hot water end 152 of the mixing valve, and the fifth node 42 of the cold water communication pipe 4 is connected to the cold water end 151 of the mixing valve; at the other water usage point 15, the cold water end 151 of the mixing valve is connected to the cold water pipe 13, and the hot water end 152 of the mixing valve is connected to the hot water pipe 14.
Example 3
In the embodiment, the preset water outlet temperature of the water outlet point of a user is set to be 45 ℃, and the water flow temperature in the cold water pipe before preheating is set to be 20 ℃; the corresponding water flow temperature is 25 ℃ when the water flow in the pipeline reaches the maximum in the preheating process; the preheating temperature in the connecting pipe corresponding to the preset water outlet temperature is 43 ℃ in the preheating process.
The present embodiment is a control method of a gas water heater system of embodiment 2, wherein the method includes the following steps:
s1, when a user does not use hot water, turning on a switch key on a display operation panel 23, selecting a preheating function through the display operation panel 23, and adjusting the preset outlet water temperature of a user water point through a temperature rising key and a temperature lowering key on the display operation panel 23;
s2, the main controller 18 judges whether the water heater 10 reaches a preheating starting condition by controlling the external controller 2 to read the detection data of the first temperature sensor 7, namely whether the temperature of the water flow in the connecting pipe 1 is lower than the preheating temperature, and when the temperature of the water flow in the connecting pipe 1 is lower than the preheating temperature, the step S3 is carried out; otherwise, the water control valve 5 keeps the initial closing state, and the whole system does not execute any operation;
and S3, the main controller 18 executes a preheating program, the water control valve 5 is opened, the water pump 17 starts to work, water in a circulating pipeline formed by the water heater 10, the hot water pipe 14, the hot water communicating pipe 3, the connecting pipe 1, the cold water communicating pipe 4 and the cold water pipe 13 flows in the circulating pipeline, the water heater 10 is ignited for preheating, when the water flow temperature T detected by the first temperature sensor 7 in the external control module 16 reaches the preheating temperature corresponding to the preset water outlet temperature of 45 degrees set in the step S1, the water pump 17 stops working, the water heater 10 stops preheating, and the water control valve 5 is reset and closed.
Further, step S3 specifically includes the following steps:
s31, the main controller 18 executes a preheating program, the water control valve 5 is opened, the water pump 17 starts to work, water in a circulating pipeline formed by the water heater 10, the hot water pipe 14, the hot water communicating pipe 3, the connecting pipe 1, the cold water communicating pipe 4 and the cold water pipe 13 flows in the circulating pipeline, at the moment, the water temperature in the circulating pipeline is t1 ═ 20 ℃, and the water flow rate is q 1;
s32, igniting and preheating the water heater 10, and increasing the water flow in the circulating pipeline to q2 when the water flow temperature T' detected by the second temperature sensor 22 on the water outlet pipe 21 of the water heater 10 reaches T2 which is 25 ℃; q2 can be more than or equal to q1, when q1 is less than q2, the peak current of the water pump during starting is favorably reduced, and the service life of the water pump is favorably prolonged;
s33, the water heater 10 is continuously preheated, and when the water flow temperature T detected by the first temperature sensor 7 in the external control module 16 is 1-2 degrees lower than the preheating temperature, the water flow in the circulating pipeline is reduced to q 3; when the circulation preheating is close to stop, the water flow is reduced, the preheated water flow can be reduced to enter the cold water pipe 13, and the influence on the water flow temperature in the whole cold water pipe 13 is small;
s34, when the water flow temperature T detected by the first temperature sensor 7 in the external control module 16 reaches the preheating temperature of 43 ℃, the water pump 17 stops working, the water heater 10 stops preheating, and the water control valve 5 is reset and closed.
Further, in step S3, during the cyclic preheating process, the water flow rate detected by the first water flow rate sensor 6 is Q1, and the water flow rate detected by the second water flow rate sensor 9 is Q2; by comparing and analyzing the monitoring values of Q1 and Q2, the main controller 18 can judge whether the user uses hot water in the circulating preheating process, if the user uses hot water, the main controller 18 stops the water pump 17 to reduce the power consumption of the water heater 10, and at the moment, the water heater 10 enters a common or pressurized bathing heating mode to provide comfortable water for the user; if the user is not using hot water and the water flow temperature T detected by the first temperature sensor 7 is less than the preheating temperature 43 deg.c, the main controller 18 continues to perform the circulation preheating until the water flow temperature T detected by the first temperature sensor 7 is greater than or equal to the preheating temperature 43 deg.c.
Further, the specific method for the main controller 18 to determine whether the user is using hot water during the cyclic preheating process is as follows: when the second water flow sensor 9 is arranged between the first node 31 and the third node 33 on the hot water communicating pipe 3, the second water flow sensor 9 detects the water flow in the hot water pipe 14 at the farthest water using point 153; if the user uses hot water at the farthest water usage point 153, the hot water flowing through the hot water connection pipe 3 is branched to the connection pipe 1 and the farthest water usage point 153, and there is a large difference between Q2 and Q1; Q2-Q1 ═ Δ Q, when Δ Q is greater than or equal to 1L/min, then the main controller 18 determines that the user is using hot water at the farthest water usage point 153 during the cyclic warm-up. If the user uses hot water at the other consumption sites 15, there is no large difference between Q2 and Q1, and the values of Q2 and Q1 are significantly reduced before and after the user begins using hot water; therefore, when Δ Q is less than 1L/min, but Q1 and Q2 both decrease by a certain value, the main controller 18 determines that the user uses hot water at the other water usage points 15 during the cyclic preheating.
Example 4
The present embodiment is a control method of a gas water heater system of embodiment 3, and is similar to embodiment 3, except that the specific method for the main controller 18 to determine whether the user uses hot water in the cyclic preheating process is as follows: when the second water flow sensor 9 is arranged between the second node 32 and the third node 33 on the hot water communication pipe 3, the second water flow sensor 9 detects the water flow at the hot water end of the mixing valve at the farthest water using point 153; the value of Q1 is significantly reduced after the user begins to use hot water regardless of whether the user uses hot water at the remote water usage point 153 or the other water usage points 15, so in this case, when Q1 is reduced by a certain value, the main controller 18 determines that the user is using hot water during the circulation preheating process, and the reduced value of Q1 can also be experimentally determined during the circulation flow preheating process. By determining the value of Q2, it can also be determined whether the user is using hot water at the remote water usage point 153 or at the other water usage point 15. When the user uses hot water at the farthest water using point 153, Q2 is more than or equal to 2L/min; when the user uses hot water at the other water usage points 15, Q2 is less than 2L/min.
The other parts of this example are the same as example 3.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (7)
1. The utility model provides a gas heater external control module, its characterized in that includes connecting pipe (1), external control ware (2) and establishes respectively connecting pipe (1) both ends and with hot water communicating pipe (3) and cold water communicating pipe (4) of connecting pipe (1) intercommunication, be equipped with water accuse valve (5), first water flow sensor (6) and first temperature sensor (7) on connecting pipe (1), water accuse valve (5) first water flow sensor (6) and first temperature sensor (7) all with external control ware (2) electric connection.
2. The external control module of the gas water heater according to claim 1, wherein a first node (31) and a second node (32) are respectively arranged at two ends of the hot water communicating pipe (3), the first node (31) and the second node (32) are respectively used for connecting a hot water pipe of the water heater and a hot water side of a water consumption point of the water heater, and a third node (33) is arranged in the middle of the hot water communicating pipe (3); a fourth node (41) and a fifth node (42) are respectively arranged at two ends of the cold water communicating pipe (4), the fourth node (41) and the fifth node (42) are respectively used for connecting a cold water pipe of the water heater and a cold water side of a water point for the water heater, and a sixth node (43) is arranged in the middle of the cold water communicating pipe (4); and the two ends of the connecting pipe (1) are respectively connected with a third node (33) of the hot water communicating pipe (3) and a sixth node (43) of the cold water communicating pipe (4).
3. The external control module of the gas water heater according to claim 2, wherein a second water flow sensor (9) is disposed on the hot water communication pipe (3), the second water flow sensor (9) is disposed between a first node (31) and a third node (33) on the hot water communication pipe (3), or the second water flow sensor (9) is disposed between a second node (32) and a third node (33) on the hot water communication pipe (3), and the second water flow sensor (9) is electrically connected to the external controller (2).
4. Gas water heater system comprising a water heater (10), a water system (11) connected to the water heater (10) and a circuit system (12) for providing electrical power to the water heater (10) and the water system (11) respectively, the water system (11) comprising a cold water pipe (13), a hot water pipe (14) and at least one water consumption point (15) connecting the cold water pipe (13) and the hot water pipe (14) simultaneously, the hot water pipe (14) having one end connected to the water outlet side of the water heater (10) and the other end connected to the water consumption point (15), the cold water pipe (13) having one end connected to an external water source and the other end branched into two branches, a first branch connected to the water inlet side of the water heater (10) and a second branch connected to the water consumption point (15), characterized in that it comprises an external control module (16) according to any one of claims 2 to 3, the water heater is characterized in that the external control module (16) is arranged at a farthest water using point (153) of the water heater (10), a first node (31) of a hot water communicating pipe (3) of the external control module (16) is connected with the hot water pipe (14), a second node (32) is connected with a hot water side of the farthest water using point (153), a fourth node (41) of a cold water communicating pipe (4) of the external control module (16) is connected with the cold water pipe (13), a fifth node (42) is connected with a cold water side of the farthest water using point (153), a water pump (17) is arranged on a water inlet side of the water heater (10), a main controller (18) is arranged inside the water heater (10), and an external controller (2) of the external control module (16) is electrically connected with the main controller (18).
5. The gas water heater system according to claim 4, wherein a water inlet pipe (19), a heat exchanger (20) and a water outlet pipe (21) are sequentially arranged in the water heater (10) along a water flow direction, the water pump (17) is arranged on the water inlet pipe (19), the water outlet pipe (21) is provided with a second temperature sensor (22), and the water pump (17) and the second temperature sensor (22) are both electrically connected with the main controller (18).
6. A gas water heater system according to claim 5, characterized in that, a display operation panel (23) is arranged on the water heater (10), and the display operation panel (23) is electrically connected with the main controller (18).
7. A gas water heater system as claimed in claim 5, wherein a water inlet nozzle (24) is provided at the water inlet side of the water heater (10), one end of the water inlet nozzle (24) is connected with the water inlet pipe (19), and the other end is connected with the first branch of the cold water pipe (13); and a water outlet nozzle (25) is arranged on the water outlet side of the water heater (10), one end of the water outlet nozzle (25) is connected with the water outlet pipe (21), and the other end of the water outlet nozzle is connected with the hot water pipe (14).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110440454A (en) * | 2019-08-15 | 2019-11-12 | 广东万和新电气股份有限公司 | A kind of gas heater external control module and its gas heater system and control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110440454A (en) * | 2019-08-15 | 2019-11-12 | 广东万和新电气股份有限公司 | A kind of gas heater external control module and its gas heater system and control method |
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