Directly-heated electric heating irrigation device

Abstract

The utility model relates to the technical field of irrigation, in particular to a directly-heated electric heating irrigation device which comprises a water inlet pipe, an electric heating body, a water outlet pipe and a control unit, a water inlet temperature sensor and a water flow switch are installed on the water inlet pipe, a water outlet temperature sensor is installed on the water outlet pipe, and a temperature control switch is installed on the electric heating body. The control unit is electrically connected with the electric heating body, the water inlet temperature sensor, the water flow switch, the water outlet temperature sensor and the temperature control switch, water flows through the water flow switch during irrigation, the water flow switch starts to act, and the control unit controls the electric heating body to start heating after detecting a water flow signal and controls the electric heating body to stop heating after water is cut off; the control unit adjusts the heating power of the electric heating body according to the water inlet temperature, the water outlet temperature and the water flow signals, the water outlet temperature is stabilized to be close to the set temperature, and therefore warming irrigation can be achieved in the cold climate, and the survival conditions of crops are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of irrigation, especially relates to a direct heating type electric heating irrigation device. BACKGROUND

[0002] Irrigation is a technical measure to supplement the water required by crops, and the irrigation water is pumped to the designated area, but the suitable temperature for crop growth is different, and the irrigation water temperature that is too low or too high is not conducive to the growth and development of crops; In winter, the low irrigation water temperature can cause root damage, destroy normal metabolic function of cells, and affect mineral absorption and nutrient transport.

[0003] Generally, the greenhouse needs to be preheated for temperature increase, the operation is complex, the heating time is long, and the temperature increase and irrigation are independent, which can reduce irrigation in winter cold climate. The direct heating type electric heating does not need preheating, and the heating is directly carried out during irrigation to save energy, electricity and water. Although there are problems such as large power and water temperature fluctuation, the water tank is small and easy to install, which is more suitable for short time interval type temperature increase irrigation in the greenhouse, and provides suitable irrigation water for winter crop growth. CONTENT OF THE UTILITY MODEL

[0004] The utility model solves the technical problem that a direct heating type electric heating irrigation device can realize temperature increase and irrigation in cold climate to improve the survival conditions of crops.

[0005] In order to solve the above technical problem, the utility model adopts the technical scheme that:

[0006] A direct heating type electric heating irrigation device, comprising a water inlet pipe, an electric heating body, a water outlet pipe and a control unit, the water inlet pipe, the electric heating body and the water outlet pipe are connected in sequence, a water inlet temperature sensor and a water flow switch are installed on the water inlet pipe, the water flow switch is located between the water inlet temperature sensor and the electric heating body, a water outlet temperature sensor is installed on the water outlet pipe, a temperature control switch is installed on the electric heating body, and the control unit is electrically connected with the electric heating body, the water inlet temperature sensor, the water flow switch, the water outlet temperature sensor and the temperature control switch.

[0007] Further, the water flow switch is a Hall flowmeter.

[0008] Further, the temperature control switch has an over-temperature protection range of 40 DEG C to 50 DEG C.

[0009] Further, the temperature control switch is fixed on the electric heating body by heat-conducting glue.

[0010] Further, it further comprises an irrigation switch, and the irrigation switch is electrically connected with the control unit.

[0011] Further, the irrigation switch is a water pressure switch, and the water pressure switch is electrically connected with the control unit.

[0012] Further, the irrigation switch is a remote switch.

[0013] Further, the control unit comprises a main controller, a power output end of the main controller is electrically connected with the electric heating body, switch input ends of the main controller are respectively electrically connected with the water flow switch and the temperature control switch, and temperature input ends of the main controller are respectively electrically connected with the water inlet temperature sensor and the water outlet temperature sensor.

[0014] The utility model discloses a beneficial effect lies in:

[0015] The utility model discloses a beneficial effect lies in: BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structure diagram of the utility model's direct heating type electric heating irrigation device;

[0017] Label explanation:

[0018] 1, water inlet pipe, 2, electric heating body, 3, water outlet pipe, 4, control unit, 41, main controller, 5, water inlet temperature sensor, 6, water flow switch, 7, water outlet temperature sensor, 8, temperature control switch, 9, irrigation switch. DETAILED DESCRIPTION

[0019] To explain the technical content, the purpose and the effect of the utility model in detail, the following will be explained with the aid of the drawings.

[0020] Please refer to Figure 1The utility model discloses a technical scheme for

[0021] A direct heating type electric heating irrigation device, including water inlet pipe, electric heating body, water outlet pipe and control unit, water inlet pipe, electric heating body and water outlet pipe are connected in proper order, install water inlet temperature sensor and water flow switch on water inlet pipe, the water flow switch is located between water inlet temperature sensor and electric heating body, install water outlet temperature sensor on water outlet pipe, install temperature control switch on electric heating body, control unit is connected with electric heating body, water inlet temperature sensor, water flow switch, water outlet temperature sensor and temperature control switch electricity respectively.

[0022] From the above description, the utility model has the beneficial effect that

[0023] This scheme is provided with water inlet pipe, electric heating body, water outlet pipe and control unit, water inlet pipe, electric heating body and water outlet pipe are connected in proper order, install water inlet temperature sensor and water flow switch on water inlet pipe, the water flow switch is located between water inlet temperature sensor and electric heating body, install water outlet temperature sensor on water outlet pipe, install temperature control switch on electric heating body, control unit is connected with electric heating body, water inlet temperature sensor, water flow switch, water outlet temperature sensor and temperature control switch electricity respectively, water inlet temperature sensor is used for sensing the temperature of water inlet, and water outlet temperature sensor is used for sensing the temperature of water outlet, and through the detection of two water inlet temperature and water outlet temperature, the stability of irrigation water temperature can be realized, and the phenomenon such as overtemperature and heating anomaly is prevented, when irrigating, water flows through the water flow switch, the water flow switch starts to act, and after the control unit detects the water flow signal, the electric heating body starts to heat, and the electric heating body stops heating after water is cut off, the control unit adjusts the heating power of the electric heating body according to the water inlet temperature, the water outlet temperature and the water flow signal, and the water outlet temperature is stabilized around the set temperature, so that the temperature increasing irrigation can be realized under the cold climate, and the survival condition of crops can be improved.

[0024] Further, the water flow switch is a hall flowmeter.

[0025] From the above description, when water flows through the water flow switch, pulse signals will be generated, and the control unit judges the size of water flow according to the pulse frequency of the water flow switch, and the electric heating body can be started only when the water flow exceeds the set threshold.

[0026] Further, the temperature control switch has an overtemperature protection range of 40 DEG C to 50 DEG C.

[0027] From the above description, the overtemperature protection range of the temperature control switch is set to 40 DEG C to 50 DEG C, so that the excessively high water outlet temperature caused by heating failure can be avoided.

[0028] Further, the temperature control switch is fixed on the electric heating body through heat-conducting glue.

[0029] Further, the irrigation switch is electrically connected with the control unit.

[0030] From the above description, the irrigation switch can be closed immediately when stopping irrigation (water stop), without waiting for the water flow switch to stop the water signal, which can better prevent dry burning.

[0031] Further, the irrigation switch is a water pressure switch electrically connected with the control unit.

[0032] Further, the irrigation switch is a remote switch.

[0033] From the above description, the irrigation switch is a remote switch, which is opened during irrigation and closed after irrigation, achieving the purpose of remotely controlling the electric heating water device.

[0034] Further, the control unit includes a main controller, the power output end of the main controller is electrically connected with the electric heating body, the switch input end of the main controller is respectively electrically connected with the water flow switch and the temperature control switch, and the temperature input end of the main controller is respectively electrically connected with the water inlet temperature sensor and the water outlet temperature sensor.

[0035] Please refer to Figure 1 , the embodiment one of the utility model discloses:

[0036] A direct heating type electric heating irrigation device, including water inlet pipe 1, electric heating body 2, water outlet pipe 3 and control unit 4 (control unit 4 is according to water inlet temperature, water outlet temperature, set temperature and the size of water flow, through the heating power of adjusting electric heating body 2, and the water outlet temperature is stably kept at the set temperature vicinity), water inlet pipe 1, electric heating body 2 and water outlet pipe 3 are connected in turn, and water inlet temperature sensor 5 and water flow switch 6 are installed on water inlet pipe 1, water flow switch 6 is located between water inlet temperature sensor 5 and electric heating body 2, water outlet temperature sensor 7 is installed on water outlet pipe 3, temperature control switch 8 is installed on electric heating body 2, and control unit 4 is electrically connected with electric heating body 2, water inlet temperature sensor 5, water flow switch 6, water outlet temperature sensor 7 and temperature control switch 8 respectively.

[0037] Direct heating type electric heating is also called instant heating type electric heating, that is, the electric heating body 2 directly heats the water flowing through to increase the temperature, that is, instant heating, without water tank storage, small volume and easy installation.

[0038] The water flow switch 6 is a hall flowmeter, and a pulse signal will be generated when water flows through the water flow switch 6, and the control unit 4 judges the size of the water flow according to the pulse frequency of the water flow switch 6, and the electric heating body 2 can be started only when the water flow exceeds the set threshold value.

[0039] The super temperature protection range of the temperature control switch 8 is 40-50 DEG C, so as to avoid the water outlet temperature from being too high due to heating failure.

[0040] The temperature control switch 8 is fixed on the electric heating body 2 by means of heat-conducting glue.

[0041] The irrigation switch is installed at the water inlet of the water inlet pipe 1, and the irrigation switch can be turned off immediately when irrigation is stopped (water is stopped), without waiting for the water flow switch 6 to send a water stop signal, so as to better prevent dry burning.

[0042] The irrigation switch is a water pressure switch, which detects the water pressure to determine whether the water is under pressure.

[0043] The irrigation switch is a remote switch, which is connected to the irrigation main system by wireless or wired mode, and is turned on during irrigation and turned off after irrigation, so as to realize remote control of the electric heating water device.

[0044] The control unit 4 comprises a main controller 41, the power output end of the main controller 41 is electrically connected with the electric heating body 2, the switch input end of the main controller 41 is electrically connected with the water flow switch 6 and the temperature control switch 8 respectively, and the temperature input end of the main controller is electrically connected with the water inlet temperature sensor 5 and the water outlet temperature sensor 7 respectively.

[0045] In the embodiment, the heating power of the electric heating body 2 can be controlled in steps, such as three heating power levels of 2kW, 4kW and 6kW, and the corresponding temperature rise under a certain water flow is 1.5 DEG C, 3 DEG C and 4.5 DEG C; the temperature rise is determined according to the comparison between the water inlet temperature and the set temperature, the heating power of the electric heating body 2 depends on the temperature rise and the water flow, and the corresponding heating level is switched; the water outlet temperature detected by the water outlet temperature sensor 7 is used as a feedback signal to fine-tune the heating, and whether the electric heating body 2 is normal is checked.

[0046] The heating power of the electric heating body 2 can also be controlled by pulse modulation, such as a total heating power of 6kW, a temperature rise of 3.6 DEG C determined according to the comparison between the water inlet temperature and the set temperature, a power of 3.6kW required for the corresponding temperature rise calculated according to the water flow, and heating control by pulse modulation with a proportion of 60%; the water outlet temperature detected by the water outlet temperature sensor 7 is used as a feedback signal to fine-tune the heating, and whether the electric heating body 2 is normal is checked.

[0047] The main controller 41 is a programmable controller, which receives switch signal input and temperature sensor input, realizes power output through a relay or a power switch electronic element, and adjusts the heating power of the electric heating body 2.

[0048] In summary, the direct heating type electric heating irrigation device, through the setting up water inlet pipe, electric heating body, water outlet pipe and control unit, water inlet pipe, electric heating body and water outlet pipe are connected in turn, water inlet pipe is equipped with water inlet temperature sensor and water flow switch, water flow switch is located between water inlet temperature sensor and electric heating body, water outlet pipe is equipped with water outlet temperature sensor, electric heating body is equipped with temperature control switch, control unit is electrically connected with electric heating body, water inlet temperature sensor, water flow switch, water outlet temperature sensor and temperature control switch respectively, water inlet temperature sensor is used for sensing the temperature of water inlet, water outlet temperature sensor is used for sensing the temperature of water outlet, through the detection of two ways of water inlet temperature and water outlet temperature, the stability of irrigation water temperature can be realized, and the phenomenon of over-temperature, abnormal heating and the like is prevented; When irrigating, water flows through the water flow switch, the water flow switch starts to act, and the control unit controls the electric heating body to start heating after detecting the water flow signal; The control unit controls the electric heating body to stop heating after water is cut off; The control unit adjusts the heating power of the electric heating body according to the water inlet temperature, the water outlet temperature and the water flow signal, and stabilizes the water outlet temperature near the set temperature, so that the temperature increasing irrigation can be realized under the cold climate, and the survival conditions of crops are improved.

[0049] The above is only the embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent transformation, direct or indirect application in the related technical field according to the content of the utility model specification and drawings is also included in the patent protection range of the utility model.

Claims

1. A direct-fired electrically heated irrigation device, characterized in that, The application relates to an electric heating water tank, which comprises a water inlet pipe, an electric heating body, a water outlet pipe and a control unit, wherein the water inlet pipe, the electric heating body and the water outlet pipe are sequentially connected, a water inlet temperature sensor and a water flow switch are arranged on the water inlet pipe, the water flow switch is located between the water inlet temperature sensor and the electric heating body, a water outlet temperature sensor is arranged on the water outlet pipe, a temperature control switch is arranged on the electric heating body, and the control unit is electrically connected with the electric heating body, the water inlet temperature sensor, the water flow switch, the water outlet temperature sensor and the temperature control switch.

2. The electrically heated, directly heated, irrigation device of claim 1, wherein, The water flow switch is a Hall flowmeter.

3. The electrically heated, directly heated, irrigation device of claim 1, wherein, The over-temperature protection range of the temperature control switch is 40-50 DEG C.

4. The electrically heated, directly heated, irrigation device of claim 1, wherein, The temperature control switch is fixed on the electric heating body through heat-conducting glue.

5. The electrically heated, directly heated, irrigation device of claim 1, wherein, The application further comprises an irrigation switch which is electrically connected with the control unit.

6. The electrically heated, directly heated, irrigation device of claim 5, wherein, The irrigation switch is a water pressure switch which is electrically connected with the control unit.

7. The electrically heated, directly heated, irrigation device of claim 5, wherein, The irrigation switch is a remote switch.

8. The electrically heated, directly heated, irrigation device of claim 1, wherein, The control unit comprises a main controller, the power output end of the main controller is electrically connected with the electric heating body, the switch input end of the main controller is electrically connected with the water flow switch and the temperature control switch respectively, and the temperature input end of the main controller is electrically connected with the water inlet temperature sensor and the water outlet temperature sensor respectively.

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