Proportional solenoid valve control method, proportional solenoid valve system, proportional solenoid valve control device, valve opening degree control program, proportional solenoid valve, heat source device, heat source device control method, heat source device control program, recording medium, control device, and hot water supply device

A proportional solenoid valve system comprising:

• a proportional solenoid valve whose valve opening degree is configured to be controlled by excitation of a proportional solenoid;
• a driving part configured to generate a driving current that excites the proportional solenoid, the driving part being configured to feed the driving current to the proportional solenoid;
• and
• a control part including a logic circuit configured to generate a forward pulse containing a first polarity reversal portion that reverses a reverse polarity of the driving current to a forward polarity and first pulses following the first polarity reversal portion, the logic circuit being configured to generate a reverse pulse containing a second polarity reversal portion that reverses the forward polarity of the driving current to the reverse polarity and second pulses following the second polarity reversal portion, the control part being configured to reverse a polarity of the driving current at a cycle faster than movement of a valve body by using the forward pulse and the reverse pulse, the control part being configured to control the valve opening degree by a current level of the driving current that depends on the first pulses and the second pulses.

A non-transitory computer readable medium storing a valve opening degree control program for causing a computer to implement the functions of:

• generating control information for generating a driving current that excites a proportional solenoid;
• generating a forward pulse containing a first polarity reversal portion that reverses a reverse polarity of the driving current to a forward polarity and first pulses following the first polarity reversal portion;
• generating a reverse pulse containing a second polarity reversal portion that reverses the forward polarity of the driving current to the reverse polarity and second pulses following the second polarity reversal portion;
• generating control information reversing a polarity of the driving current at a cycle faster than movement of a valve body by using the forward pulse and the reverse pulse;
• and
• generating control information controlling a valve opening degree by a current level of the driving current that depends on the first pulses and the second pulses.

A proportional solenoid valve comprising:

• a valve mechanism configured to be controlled by excitation of a proportional solenoid;
• a driving part configured to feed a driving current to the proportional solenoid;
• and
• a control part including a logic circuit configured to generate a forward pulse containing a first polarity reversal portion that reverses a reverse polarity of the driving current to a forward polarity and first pulses following the first polarity reversal portion, the logic circuit being configured to generate a reverse pulse containing a second polarity reversal portion that reverses the forward polarity of the driving current to the reverse polarity and second pulses following the second polarity reversal portion, the control part being configured to reverse a polarity of the driving current at a cycle faster than movement of a valve body by using the forward pulse and the reverse pulse to cancel a residual magnetism, the control part being configured to adjust a valve opening degree by a current level of the driving current that depends on the first pulses and the second pulses.

A proportional solenoid valve comprising:

• a valve mechanism;
• a proportional solenoid configured to control the valve mechanism by excitation;
• a driving part configured to generate a driving current that excites the proportional solenoid, the driving part being configured to feed the driving current to the proportional solenoid;
• and
• a control part including a logic circuit configured to generate a forward pulse containing a first polarity reversal portion that reverses a reverse polarity of the driving current to a forward polarity and first pulses following the first polarity reversal portion, the logic circuit being configured to generate a reverse pulse containing a second polarity reversal portion that reverses the forward polarity of the driving current to the reverse polarity and second pulses following the second polarity reversal portion, the control part being configured to reverse a polarity of the driving current at a cycle faster than movement of a valve body by using the forward pulse and the reverse pulse, the control part being configured to control a valve opening degree by a current level of the driving current that depends on the first pulses and the second pulses.

A heat source device comprising:

• a burner configured to burn fuel gas;
• a proportional solenoid valve whose valve opening degree is configured to be controlled by excitation of a proportional solenoid, the proportional solenoid valve being configured to allow the fuel gas that is to be supplied to the burner to pass through;
• a driving part configured to generate a driving current that excites the proportional solenoid, the driving part being configured to feed the driving current to the proportional solenoid;
• and
• a control part including a logic circuit configured to generate a forward pulse containing a first polarity reversal portion that reverses a reverse polarity of the driving current to a forward polarity and first pulses following the first polarity reversal portion, the logic circuit being configured to generate a reverse pulse containing a second polarity reversal portion that reverses the forward polarity of the driving current to the reverse polarity and second pulses following the second polarity reversal portion, the control part being configured to reverse a polarity of the driving current at a cycle faster than movement of a valve body by using the forward pulse and the reverse pulse, the control part being configured to control a valve opening degree by a current level of the driving current that depends on the first pulses and the second pulses.

A heat source device control method using a proportional solenoid valve to control fuel gas, the heat source device control method comprising:

• generating a driving current that drives the proportional solenoid valve;
• burning the fuel gas having passed through the proportional solenoid valve;
• generating a forward pulse containing a first polarity reversal portion that reverses a reverse polarity of the driving current to a forward polarity and first pulses following the first polarity reversal portion;
• generating a reverse pulse containing a second polarity reversal portion that reverses the forward polarity of the driving current to the reverse polarity and second pulses following the second polarity reversal portion;
• reversing a polarity of the driving current at a cycle faster than movement of a valve body by using the forward pulse and the reverse pulse;
• and
• controlling a valve opening degree by a current level of the driving current that depends on the first pulses and the second pulses.

A non-transitory computer readable medium storing a heat source device control program for causing a computer to implement the functions of:

• generating control information for generating a driving current that excites a proportional solenoid;
• generating a forward pulse containing a first polarity reversal portion that reverses a reverse polarity of the driving current to a forward polarity and first pulses following the first polarity reversal portion;
• generating a reverse pulse containing a second polarity reversal portion that reverses the forward polarity of the driving current to the reverse polarity and second pulses following the second polarity reversal portion;
• generating control information reversing a polarity of the driving current at a cycle faster than movement of a valve body by using the forward pulse and the reverse pulse;
• and
• generating control information controlling a valve opening degree by a current level of the driving current that depends on the first pulses and the second pulses.