CN103216869B - Hot-water pipeline system - Google Patents

Abstract

The invention provides a hot water pipeline system, which includes a hot water main pipe drawn from a water tank through a water supply electromagnetic valve, and a one-way air valve is connected next to it. The end is connected to a hot water faucet; each water supply pipe is equipped with a flow rate sensor; the middle section of each water supply pipe is connected to a return water pipe, and each return water pipe is connected to a return water main pipe with a check pump in series; each flow rate sensor When no positive flow rate is detected, the water supply solenoid valve is slowly closed through the controller, and then a start signal is sent to the check water pump, otherwise, the water supply solenoid valve is turned on; there is also a water temperature sensor in the water inlet of the check water pump, The non-return water pump runs when the starting signal is received and the temperature detected by the water temperature sensor reaches the preset value, otherwise the non-return water pump does not operate; the non-return water pump is placed under the water tank. The system can effectively reduce resource waste in the hot water supply system.

Description

hot water piping system

technical field

The invention relates to the field of pipeline construction, in particular to a hot water pipeline supply system in a water supply system.

Background technique

At present, in the domestic water system, there is a large waste in the hot water supply system, especially in the domestic hot water piping system, and especially in the family where the water tank is erected on the roof. Long, when users need to use hot water, they first need to drain the cold water in the pipeline between the water tank and the hot water tap, and then they can get hot water, but when users only need to use a small amount of hot water, it seems very wasteful , usually, if the user uses hot water every hour or so during the day, such as washing hands, washing tea cups, etc., each time will consume more than a whole section of hot water pipe water. After a day, a tank of water is basically nearly However, the hot water that users actually use is very little, and most of the heat is dissipated when the hot water pipes are idle.

Contents of the invention

In view of the above problems, the object of the present invention is to provide a hot water pipeline system, which can effectively reduce the waste of resources in the hot water supply system.

The technical scheme adopted by the present invention to solve its technical problems is: the system includes a water supply main pipe drawn from the water tank through a water supply solenoid valve, and a one-way air valve in a direction from the outside of the pipe to the inside of the pipe is connected to the water supply main pipe, and the water supply main pipe One or more water supply pipes are respectively led out through a one-way valve, and the ends of each water supply pipe are respectively connected to hot water faucets; each of the water supply pipes is respectively provided with a flow rate sensor; The middle section of the sensor is respectively connected to a water return pipe, and each water return pipe is connected to a water return main pipe, and the water return main pipe is connected in series near the water tank with a non-return valve for pumping the water in the water return main pipe into the water tank. Water pump; when each of the flow rate sensors does not detect the positive flow rate to the hot water faucet, the controller slowly closes the water supply solenoid valve within 3 to 5 seconds, and then passes the controller to the non-return valve The water pump sends a start signal, otherwise, the water supply solenoid valve is opened; a water temperature sensor is also provided in the water inlet of the check water pump, and the check water pump receives the start signal and the water temperature sensor detects It runs when the temperature reaches the preset value, otherwise the check water pump does not run; the check water pump is placed under the water tank.

Preferably, the check water pump is composed of a servo pump and a check valve connected in series.

Preferably, the temperature preset value of the water temperature sensor is 37°C, and the check water pump is placed in a heat-insulating room, and the water temperature sensor is insulated from the outside, so as to prevent the high temperature in summer from affecting the work of the water temperature sensor.

Preferably, each of the flow rate sensors is close to each of the hot water faucets, and each of the water return pipes is close to each of the flow rate sensors, so that after each use of hot water, the remaining water in the piping system is reduced as much as possible.

The beneficial effect of the present invention is that: in the initial state, the water supply solenoid valve is closed, the check water pump is closed, there is hot water in the water tank, and there is no water in the pipeline system. When using for the first time, the water supply solenoid valve is artificially opened, and the hot water flows into the water supply pipeline , and flow to each hot water faucet, when each hot water faucet is closed after using the hot water, that is, when each of the flow rate sensors does not detect the positive flow rate flowing to the hot water faucet, the water supply solenoid valve is controlled and slowly closed, and at this time Since each hot water faucet is closed, under the action of water pressure, the hot water in the piping system will quickly flow to the water inlet of the check water pump below the water tank. At this time, the water temperature sensor detects that the temperature is higher than the preset The temperature of the hot water body, and receive the start signal from the controller, start to run, the hot water remaining in the water supply main pipe, and the hot water in the section between the water supply main pipe and the return water pipe in each water supply pipe The water is pumped back to the water tank, leaving only the hot water between the hot water tap and the water return pipe; after that, because there is no hot water in the water inlet of the check water pump, the temperature detected by the water temperature sensor cannot reach the preset value, so the The return water pump stops running; when the hot water is used next time, the hot water faucet is opened, and a small section of water remaining in the water supply pipe corresponding to the hot water faucet will flow out. At this time, the flow of this section of water body is detected by the flow rate sensor in the water supply pipe , so that the water supply solenoid valve is opened, so that the hot water is continuously supplied; after closing all the hot water taps, it enters the next cycle; with this configuration, the entire hot water supply system is fully automated; and since each time the hot water is used, Only a small section of water body remains in each water supply pipe, and there is no heat exchange between the water body and the water tank, so the saving of water resources and heat is very obvious.

Description of drawings

Fig. 1 is a schematic diagram of an embodiment of the hot water pipeline system.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the present invention is further described:

In the embodiment shown in Figure 1, the hot water pipeline system includes a water supply main pipe 2 drawn from a water tank 1 through a water supply solenoid valve 3, and a one-way air valve 7 in a direction from the outside of the pipe to the inside of the pipe is connected to the water supply main pipe 2 , the water supply main pipe 2 respectively leads out the first water supply pipe 21 and the second water supply pipe 22 through the first one-way valve 210 and the second one-way valve 220, and the ends of the first and second water supply pipes are respectively connected to hot water faucets 212 and 222 ; The first and second water supply pipes 21, 22 are respectively equipped with a first flow rate sensor 211 and a second flow rate sensor 221; the first and second water supply pipes are respectively connected to the first return valve and the middle section of the flow rate sensor on the first and second water supply pipes. Water pipe 41, second return water pipe 42, the first and second return water pipes are connected to a return water main pipe 4, and the return water main pipe 4 is connected in series near the water tank 1 to return to the water main pipe 4 The water is pumped into the check water pump 5 of the water tank 1, and the check water pump 5 is placed under the water tank 1; when the first and second flow rate sensors 211 and 221 do not detect the forward flow rate to the hot water tap, they pass The controller (not shown) slowly closes the water supply solenoid valve 3 within 3 to 5 seconds to ensure that when the water supply solenoid valve 3 is closed, the hot water has sufficient time to flow to the check water pump under the action of water pressure 5, and then send a starting signal to the check water pump 5 through the controller, otherwise, open the water supply solenoid valve, that is, when the hot water faucet is using water, open the water supply solenoid valve 3; A water temperature sensor (not shown) is also provided in the water inlet of the water pump 5, and the non-return water pump 5 receives the start signal sent by the controller, and the temperature detected by the water temperature sensor reaches the preset temperature. When setting the value, it runs, otherwise the check water pump does not run.

In the above-mentioned hot water pipeline system, the check water pump 5 is composed of a servo pump and a check valve connected in series.

In the above-mentioned hot water pipeline system, the temperature preset value of the water temperature sensor is 37°C, and the check water pump 5 is placed in the heat insulation room, and the water temperature sensor is insulated from the outside. At this time, the detected temperature is equivalent to the temperature in the heat insulation room, which is about 20°C; while the temperature of hot water is generally above 37°C, therefore, through the water temperature sensor, it can be judged whether there is water in the water inlet of the check water pump 5 , can avoid the non-return pump idling.

The controller can be configured with an ordinary single-chip microcomputer, which belongs to the basic electrical knowledge and will not be repeated here.

When the system is in the initial state, the water supply solenoid valve 3 is closed, the check water pump 5 is closed, there is hot water in the water tank 1, and there is no water in the pipeline system. When the system is used for the first time, the water supply solenoid valve 3 is artificially opened, and the hot water flows into the water supply pipeline. And flow to each hot water faucet 212,222, when each hot water faucet is used up hot water and is all closed, that is, when each of the flow rate sensors 211,221 does not detect the positive flow velocity flowing to the hot water faucet, the water supply solenoid valve 3 is controlled Slowly close, and at this moment, because each hot water faucet 212,222 is closed, therefore, under the action of water pressure, the hot water in the piping system will quickly flow to the water inlet of the check water pump 5 below the water tank 1, at this time, all The water temperature sensor detects the temperature of the hot water body higher than 37°C, and receives the start signal from the controller to start running, and the hot water remaining in the water supply main pipe 2, as well as the first and second water supply The hot water in the sub-pipes 21, 22 between the water supply main pipe 2 and the first and second water return pipes 41, 42 is drawn back to the water tank 1, that is, the water bodies in sections a, b, and c in Fig. 1 are drawn back to the water tank 1, Only the hot water in the section between the hot water tap and the water return pipe is left; thereafter, since there is no hot water in the water inlet of the check water pump 5, the temperature detected by the water temperature sensor cannot reach the preset value, and the check water pump 5 stops Operation; when using hot water next time, the first or second hot water faucet is opened, and a small section of water remaining in the water supply pipe corresponding to the hot water faucet will flow out. Detected, the water supply solenoid valve 3 is opened, so that hot water is continuously supplied; after closing all hot water taps, it enters the next cycle; so configured, the entire hot water supply system is fully automated; and because each use of hot water After watering, only a small section of water body remains in each water supply pipe, and there is no heat exchange between this section of water body and the water tank, so the saving of water resources and heat is very obvious.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (4)

1. a hot-water pipeline system, it is characterized in that: this system comprises the water main (2) drawn by a water supply electromagnetic valve (3) by water tank (1), in described water main (2), side connects a direction from pipe to the Non-return air valve (7) in pipe, water main draws more than one water supply respectively by a check valve (210,220) and is in charge of (21,22), and each described water supply point pipe end section does not connect hot water tap (212,222); Each described water supply is in charge of in (21,22) and is respectively equipped with a flow sensor (211,221); Each described water supply is in charge of and is connected a backwater at check valve (210,220) respectively with flow sensor (211,221) interlude and is in charge of (41,42), each described backwater is in charge of and is connected to a return main (4), and described return main (4) is being connected in series one by the non-return water pump (5) of the water suction water tank in return main near water tank (1) place; Each described flow sensor (211,221) is not when the forward flow velocity flowing to hot water tap all being detected, by controller by described water supply electromagnetic valve (3) slowly closing in 3 ~ 5 seconds, then send enabling signal by described controller to described non-return water pump (5), otherwise, open described water supply electromagnetic valve (3); Also be provided with a cooling-water temperature sensor in the water inlet of described non-return water pump (5), described non-return water pump is receiving described enabling signal, and runs when the temperature that described cooling-water temperature sensor detects reaches preset value, otherwise non-return water pump does not run; Described non-return water pump (5) is placed in water tank (1) below.

2. hot-water pipeline system according to claim 1, is characterized in that: described non-return water pump (5) is connected in series by a servopump and a check-valves and forms.

3. hot-water pipeline system according to claim 1 and 2, is characterized in that: the temperature preset value of described cooling-water temperature sensor is 37 DEG C, and described non-return water pump (5) is placed in heat-insulating room, cooling-water temperature sensor and the external world heat insulation.

4. hot-water pipeline system according to claim 1, is characterized in that: each described flow sensor is close to each described hot water tap, and each described backwater is in charge of close to each described flow sensor.