Flow metering valve control unit

Abstract

The utility model discloses a flow metering valve control unit which comprises a control chip U1, the model of the control chip U1 is MLX90360LDC-ACD-000-RE, and the model of the control chip U1 is MLX90360LDC-ACD-000-RE. A pin 1 of the control chip U1 is sequentially connected with a resistor R1 and a capacitor C4 in series and then is grounded; the resistor R1 is connected in parallel with the capacitor C4 and the capacitor C1; a pin 2 and a pin 3 of the control chip U1 are grounded; a pin 5 of the control chip U1 is sequentially connected in series with a capacitor C3, a resistor R2, a resistor R3 and a pin 3 and a pin 4 of the first single-row straight pin J1; a pin 6 of the control chip U1 is connected in series with a pin 5 of the control chip U1 through a capacitor C3; a pin 7 of the control chip U1 is connected in series with a pin 6 of the control chip U1 through a capacitor C2; a pin 8 of the control chip U1 is connected in series with a pin 7 of the control chip U1 through a capacitor C2, and the capacitor C2 and the pin 8 of the control chip U1 are grounded. The utility model has the advantages of simple structure, stable operation and the like.

Description

Technical Field

[0001] The utility model relates to a control unit of a flow metering valve, belonging to the technical field of flow metering valves. Background Technique

[0002] The flow metering valve is composed of a manual regulating valve group and an automatic balancing valve group. The function of the regulating valve group is to set the flow rate, and the function of the automatic balancing valve group is to maintain a constant flow rate. The flow valve is applicable to water systems that require flow control, especially suitable for flow control of non-corrosive liquid media such as heating and air conditioning; installed in the water system, after a primary adjustment before operation, the system flow rate can be automatically kept constant at the required set value. However, the control units of flow metering valves in the current market generally have the problem of unstable operation. Content of the Utility Model

[0003] The purpose of the utility model is to provide a control unit of a flow metering valve, which has the advantages of simple structure, stable operation, etc., and can accurately control the flow rate, reaching 1 g / s.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A control unit of a flow metering valve includes a control chip U1, and the model of the control chip U1 is MLX90360LDC-ACD-000-RE; pin 1 of the control chip U1 is successively connected in series with a resistor R1 and a capacitor C4 and then grounded; the resistor R1, the capacitor C4 and a capacitor C1 are in parallel; pin 2 and pin 3 of the control chip U1 are grounded; pin 5 of the control chip U1 is successively connected in series with a capacitor C3, a resistor R2, a resistor R3 and pins 3 and 4 of a first single-row straight pin J1; pin 6 of the control chip U1 is connected in series with pin 5 of the control chip U1 through the capacitor C3; pin 7 of the control chip U1 is connected in series with pin 6 of the control chip U1 through the capacitor C2; pin 8 of the control chip U1 is connected in series with pin 7 of the control chip U1 through the capacitor C2, and the capacitor C2 and pin 8 of the control chip U1 are grounded; pins 5 and 6 of the first single-row straight pin J1 are grounded, pin 3 of the first single-row straight pin J1 is grounded through the capacitor C5, and pins 1 and 2 of the first single-row straight pin J1 are connected to the wire between the capacitor C4 and the resistor R1; the wire between pin 5 of the control chip U1 and the capacitor C3 is connected to the wire between the resistor R2 and the resistor R3.

[0006] In the foregoing control unit of a flow metering valve, the capacitance of the capacitor C1 is 1 NF, the capacitance of the capacitor C2 is 100 NF, the capacitance of the capacitor C3 is 1 NF, the capacitance of the capacitor C4 is 100 NF, and the capacitance of the capacitor C5 is 100 NF.

[0007] In the aforementioned flow metering valve control unit, the resistance value of resistor R1 is 0 Ω, the resistance value of resistor R2 is 10 KΩ, and the resistance value of resistor R3 is 47.5 Ω.

[0008] Compared with the prior art, the utility model has the advantages of simple structure, stable operation, etc., with precise flow control, which can reach 1 g / s. And the flow metering valve control unit has a fast response speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is the signal acquisition circuit diagram of the utility model;

[0010] Figure 2 is the schematic diagram of the communication connection mode between this control unit and external devices;

[0011] Figure 3 is the flow control joint.

[0012] The following further describes the utility model in conjunction with the drawings and specific embodiments. SPECIFIC EMBODIMENTS

[0013] Embodiment 1 of the utility model: A flow metering valve control unit includes a control chip U1, and the model of the control chip U1 is MLX90360LDC - ACD - 000 - RE; Pin 1 of the control chip U1 is successively connected in series with resistor R1 and capacitor C4 and then grounded; Resistor R1, capacitor C4 and capacitor C1 are in parallel; Pin 2 and pin 3 of the control chip U1 are grounded; Pin 5 of the control chip U1 is successively connected in series with capacitor C3, resistor R2, resistor R3 and pins 3 and 4 of the first single - row straight pin J1; Pin 6 of the control chip U1 is connected in series with pin 5 of the control chip U1 through capacitor C3; Pin 7 of the control chip U1 is connected in series with pin 6 of the control chip U1 through capacitor C2; Pin 8 of the control chip U1 is connected in series with pin 7 of the control chip U1 through capacitor C2, and capacitor C2 and pin 8 of the control chip U1 are grounded; Pins 5 and 6 of the first single - row straight pin J1 are grounded, pin 3 of the first single - row straight pin J1 is grounded through capacitor C5, and pins 1 and 2 of the first single - row straight pin J1 are connected to the wire between capacitor C4 and resistor R1; The wire between pin 5 of the control chip U1 and capacitor C3 is connected to the wire between resistor R2 and resistor R3.

[0014] The capacitance of capacitor C1 is 1 NF, the capacitance of capacitor C2 is 100 NF, the capacitance of capacitor C3 is 1 NF, the capacitance of capacitor C4 is 100 NF, and the capacitance of capacitor C5 is 100 NF. The resistance value of resistor R1 is 0 Ω, the resistance value of resistor R2 is 10 KΩ, and the resistance value of resistor R3 is 47.5 Ω.

[0015] J1 is docked with J4, J2 and J3 are not welded, TB1 and TB2 are not welded, and TB3 and TB4 are welded to control the flow rate of the flow control valve.

Claims

1. A flow metering valve control unit, characterized in that: The invention comprises a control chip U1, the model of which is MLX90360LDC-ACD-000-RE; the pin 1 of the control chip U1 is connected in series with the resistor R1 and the capacitor C4 in sequence and then connected to ground; the resistor R1, the capacitor C4 and the capacitor C1 are connected in parallel; the pin 2 and the pin 3 of the control chip U1 are connected to ground; the pin 5 of the control chip U1 is connected in series with the capacitor C3, the resistor R2, the resistor R3 and the pin 3 and the pin 4 of the first single-row straight pin J1 in sequence; the pin 6 of the control chip U1 is connected in series with the capacitor C3 and the pin 5 of the control chip U1; the control Pin 7 of chip U1 is connected in series with pin 6 of control chip U1 via capacitor C2; pin 8 of control chip U1 is connected in series with pin 7 of control chip U1 via capacitor C2, and capacitor C2 and pin 8 of control chip U1 are grounded; pin 5 and pin 6 of the first single-row straight pin J1 are grounded, pin 3 of the first single-row straight pin J1 is grounded via capacitor C5, and pin 1 and pin 2 of the first single-row straight pin J1 are connected to the wire between capacitor C4 and resistor R1; the wire between pin 5 of control chip U1 and capacitor C3 is connected to the wire between resistor R2 and resistor R3.

2. A flow metering valve control unit according to claim 1, characterized in that: The capacitance of capacitor C1 is 1NF, the capacitance of capacitor C2 is 100NF, the capacitance of capacitor C3 is 1NF, the capacitance of capacitor C4 is 100NF, and the capacitance of capacitor C5 is 100NF.

3. A flow metering valve control unit according to claim 1, characterized in that: The resistance value of the resistor R1 is 0Ω, the resistance value of the resistor R2 is 10KΩ, and the resistance value of the resistor R3 is 47.5Ω.

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