SU1594499A1 - Apparatus for multichannel temperature control - Google Patents

Abstract

The invention can be used in various fields of light industry. The aim of the invention is to improve the accuracy and reliability of the device by monitoring the integrity of the heating elements or their supply chains. The device contains heating elements, temperature sensors and actuating elements according to the number of controlled objects. Stabilization of temperature and control of the health of heating elements in heating objects allows to achieve high-quality molding of the product and reduce the relaxation properties of the skin. 3 il.

Description

The invention relates to devices for multichannel temperature control and can be used in various areas of light density, in particular, in leather haberdashery, shoe and fur.

The aim of the invention is to improve the accuracy and reliability of the device by monitoring the integrity of the heating elements or their supply chains.

FIG. 1 is a block diagram of the device; in fig. 2 is a switch wiring diagram; in fig. 3 shows a signal pulse generator.

A device for multichannel temperature control contains

heating elements 1 (fig. 1), temperature sensors 2 and actuating elements 3 according to the number of controlled objects Two-position control unit 4 with temperature setting device 5. is connected with temperature sensor 2 of heating objects through switch 6, made on the step finder i having two switching circular fields. Shaper 7 clock pulses connected to the control input of the switch. The mode switch 8 is connected to the network via the Start button 9, and its output is connected to the switch 6. The channel switching indicators 10 are made on the lamps and are connected each through the contact element of its own channel with the network

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nutrition Key 11 is made on a current relay, the winding of which is connected in series to the common supply circuit of the heating elements 1.

The generator 12 of the signal pulses is made in the form of a relay, the winding of which through its own first break contact, the Reset button 13 and the break contact of the key 11 is connected to the power supply network. A common point of the indicators 10 is connected to the network through the second disconnecting contact of the generator relay .12 signal pulses.

The device works as follows.

Initial state of the device: the heating elements of all controlled objects are de-energized. The operator setting device 5 on the regulating two-position block 4 sets the desired temperature of the heated objects. Pressing the Start button 9 turns on the switch of 8 modes, which is self-blocked by the open contact K +, (Fig. 2). Contact

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8 modes interconnects the output circuits of the switch 6, thereby: the actuators 3 (W, - W) are connected in parallel through the open contacts of which the input circuit of the heating elements 1 (H, H |) is connected to the mains . The output circuit of the heating elements 1 soybeans, zinc with a common circuit through the key 11, the relay coil of which is sequentially connected to the heating circuit. There is a parallel heating of objects.

When the set temperature is reached, the temperature controller de-energizes the switch of 8 modes, which opens its group of open contacts K ,, K, ... K, so that the 1m stops the parallel heating of objects and the circuit switches to the multi-channel temperature control mode. Simultaneously, the shaper 7 clock pulses, which with a given duration, pulses switches switch 6 (Fig. 2) from position U, U to position and., And 2 ,. The temperature sensor 2 of the first heating element 1-H (Fig. 1) is connected via switch 6 to the temperature controller. If the temperature of the object in which the heating element is located

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ment 1-H |, corresponds to the preset, then the signal from the output of the temperature regulator 4 is absent and the actuator 1-H is not included. Upon expiration of the I time of the clock signal from the driver of the 7 clock pulses, the next signal arrives at the switch 6, which switches to the next position, and so on. If the temperature of the object is lower than the set, then on. The output of the temperature controller 4 is a signal. At the same time, through the switch 6, an actuating element 3-W is turned on, which by an open contact switches on the heating element 1-H until the object temperature reaches the set one, etc.

The health of the heating elements 1 is monitored at the time of their operation by a key 11 (FIG. 3) connected in series in the heating circuit.

When correcting the heating element 1-H, the key does not receive a signal from the generator unit 12 of the signal pulses, and the 10-L indicator turns on the signal pulses through the contact D of the generator 12 and the contact of the actuator 3-W, lights up with a constant light.

When a heating element 1-H malfunctions, a signal appears at the output of switch 11, which turns on a generator of 12 signal pulses operating in a relay generator mode due to its contact D-. The indicator 10-L, when a pulse voltage is applied, and it starts to blink, signaling an alarm condition.

To clear the alarm, use the Reset latch 13 button.

Thus, temperature stabilization and control of the operability of heating elements in heated objects (in this case, glove rules) allow to achieve high-quality product molding and reduce the skin's relaxation properties.

Claims (1)

Invention Formula A device for multichannel temperature control, containing-, heating elements, temperature setpoint, according to the number of heating elements, temperature sensors / W; o Pe To the executive device / pSo / - k + l ffjf. Fig2 Phi2.1 Kree (/ lgto n / L tlx L.J / j Fi.Z To switch /