KR200298040Y1 - Control Apparatus of Refrigeration Apparatus for Refrigeration Vehicle - Google Patents

Abstract

The present invention relates to a refrigeration vehicle control device for a refrigeration vehicle, the temperature sensor relay (R3) for receiving a signal from the temperature sensor in the freezer and outputs a switching signal, and receives the switching signal from the temperature sensor relay to switch the start switch to the on state A start relay R6 for outputting a switching signal when a start key or a start key is input, a start motor connection relay R1 for connecting a start motor in response to a switch signal of the start relay, and switching of the start motor connection relay. A start timer T2 for maintaining the start switch for a time set to the start position; an engine heating timer T1 for heating the engine for a predetermined time set when the start timer is started by the start timer; and a battery of a refrigeration vehicle. Battery connection relay (R2) for switching the power supplied from the vehicle and starting when the door of the refrigeration vehicle is locked Door open / close detection relay R4 for turning off the state, a start-off timer T3 for turning off the engine when the temperature in the freezer falls below a set temperature, and switching at start-up of the engine And an engine connection relay R5 intermittently intermittently connected to each other, an auxiliary connection relay R9 intermittently intercepting a signal output from the control device, and other relays connected according to the starting state of the engine. 2 auxiliary relays (R7) (R8) and a third auxiliary relay (R10) for disconnecting a plurality of other relays connected when starting the engine, even if the refrigeration vehicle is not started, depending on the temperature in the freezer Start or off to maintain a constant freezing temperature at all times.

Description

Control Apparatus of Refrigeration Apparatus for Refrigeration Vehicle

The present invention relates to a refrigeration vehicle control apparatus for a refrigeration vehicle, and more particularly, even if the refrigeration vehicle is not started, the refrigeration vehicle refrigeration apparatus for automatically starting or turning off according to the temperature in the freezer to maintain a constant freezing temperature at all times It relates to a control device of.

In general, a refrigerated vehicle is a special vehicle for transporting food and beverages or frozen stored foods that require freshness or maintain a frozen state in distribution. When the refrigeration vehicle is in operation, the refrigeration system can be driven by starting the refrigeration vehicle. However, when the start of the refrigeration vehicle is off, there is a problem in that the refrigeration apparatus of the refrigeration vehicle is also turned off so that the freezing temperature of the freezer is not kept constant. In particular, when the refrigeration vehicle is continuously maintained at night, noise problems and fuel consumption increase.

Therefore, there is a inconvenience that the frozen storage food in the freezer must be transferred to another freezing device at a time when the refrigeration vehicle is not running, that is, at night, and it is not easy to properly maintain the required freezing temperature.

Due to such a problem, in the past, an external AC power was connected to drive a refrigeration apparatus of a refrigeration vehicle, but it is difficult to receive AC power anytime and anywhere from the outside. Therefore, there was a problem that the operation efficiency of the refrigeration vehicle is reduced and inconvenient.

In order to solve the above problems, the present invention detects the temperature of the freezer even when the refrigeration vehicle is not in operation, and automatically starts when the temperature is lower than the set temperature. The purpose is to provide a refrigeration apparatus control device for a refrigeration vehicle that automatically turns off the starting state.

In addition, the present invention provides a refrigeration vehicle control apparatus for a refrigeration vehicle that automatically turns on or off the startup in accordance with the temperature in the freezer in the state that the refrigeration vehicle is off, so that the refrigeration vehicle is always started to drive the refrigeration apparatus. Another purpose is to reduce fuel consumption in refrigerated vehicles because they do not have to be present, and to minimize noise problems caused by continuous refrigeration vehicle starting conditions.

1 is a block diagram of a refrigeration vehicle control apparatus for a refrigerator according to the present invention,

2 is a configuration diagram showing an embodiment of a refrigeration apparatus control apparatus of the present invention,

3 is a flow chart related to the operation of the refrigerating device control device of the present invention.

♣ Explanation of symbols for main part of drawing ♣

10: control device 30: door

40: freezer R3: temperature sensor relay

R6: start relay R1: start motor connection relay

T2: start timer T1: engine heating timer

R2: battery connection relay R4: door open / close detection relay

T3: Start Off Timer R5: Engine Run Relay

R9: auxiliary relay R7, R8, R10: auxiliary relay

R11: Refrigerator relay S: Temperature sensor

In order to achieve the above object, the present invention provides a temperature sensor relay that receives a signal from a temperature sensor in a freezer and outputs a switching signal, and receives a switching signal from the temperature sensor relay, and switches the start switch to an on state or uses a start key. Maintains the start switch for a time set by the start relay by switching the start relay which outputs a switching signal when input, the start motor connection relay connecting the start motor by receiving the change signal of the start relay, and the start motor connection relay. A start timer for making the engine, an engine heating timer for heating the engine for a predetermined time set by the start timer, a battery connection relay for switching the power supplied from the battery of the refrigeration vehicle, and a door of the refrigeration vehicle. Door opening and closing detection to turn off the starting state when locked A relay, a start-off timer for turning off the engine when the temperature in the freezer falls below a set temperature, an engine-operated relay connected to the starter motor and switched at the start of the engine, and controlled from the outside of the controller; An auxiliary connection relay for controlling an output signal, a first and a second auxiliary relay for regulating a connection with another relay connected according to the starting state of the engine, and a plurality of other relay contacts connected when the engine is started. It is characterized by providing a refrigeration device control apparatus for a refrigeration vehicle including a third auxiliary relay for switching.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of a refrigeration vehicle control apparatus for a refrigerator vehicle according to the present invention, Figure 2 is a configuration diagram showing an embodiment of the present invention.

First, the configuration required for the power generation and charging process from the start of the vehicle and the engine started from the engine, the start switch (2) is to insert the start key into the start switch, that is, the key holder using the start key for starting the vehicle After that, start the motor by turning the start key from the 1st, 2nd and 3rd positions to the start position. At this time, power is supplied from the battery 1 to start the starting motor 3. Simultaneously with the start of the starting motor 3, the power supplied from the battery 1 ignites the ignition plug configured in the engine block through the distributor 4, and starts the engine by injecting the mixed fuel into the cylinder of the engine. In other words, this operation is a normal vehicle starting process. In addition, the vehicle is somewhat different depending on the fuel used, that is, gasoline, diesel, LPG, etc. Similarly, the starting method may differ slightly depending on the engine using such fuel, that is, gasoline engine, diesel engine or LPG engine. have.

Therefore, the present invention discloses a diesel engine using diesel as a fuel as an embodiment thereof. This may be a truck or a special vehicle, especially a truck equipped with a freezer. Trucks equipped with freezers typically use diesel engines and diesel, because they load cargo or require greater power.

On the other hand, when the ignition key is released in the state of starting, the ignition switch 2 returns to the third stage position, and the starting motor 3 is turned off. The rotational force generated from the engine in the state of starting is converted into driving force for driving of the vehicle.

At this time, the driving force of the engine starts the generator 7, the generator 7 converts rotational energy into electrical energy and supplies it to the charger 8. In addition, the charger 8 includes a function of charging the battery 1 by supplying voltage and current to the battery 1.

Various electric and electronic devices mounted on the vehicle are driven by receiving electrical energy from the charger 8 or the battery 1, and particularly, even in the case of a refrigeration vehicle of the present invention, the electric energy required by the battery 1 or the charger ( It is possible to maintain the temperature of the freezer 40 by driving the freezing device 42 supplied from 8).

As such, the apparatus for controlling the refrigerating device for a refrigerating vehicle of the present invention is mounted at one side of the vehicle, for example, preferably at one side of the engine room or the freezer, or at an appropriate position of the refrigerating vehicle.

Referring to the configuration of FIG. 2 as an embodiment showing a device for controlling a refrigerating device of a refrigeration vehicle of the present invention, a combination and connection of a plurality of relays and timers.

It is preferable that the plurality of relays and timers constituted by the control device be a standard capable of switching the power supplied from the battery and the charger, and can switch the vehicle voltage, for example, a voltage of DC 12 to 24V. In the relay of the present invention, when a current flows in a coil part by a driving power source, that is, a power input from a battery or a charger, a plurality of relay contacts switch states. In addition, the timer includes a coil unit, a relay contact point, and a counter for delaying a predetermined time period so that the relay contact state switches after a set time elapses even when a signal is input from the outside.

The temperature sensor relay R3 receives a signal from the temperature sensor S in the freezer 40 and outputs a switching signal, that is, a signal input from the temperature sensor S mounted in the freezer 40, that is, the freezer 40. When the internal temperature rises above the set temperature or falls below the set temperature, the current state is switched by the input signal.

The starting relay R6 receives the switching signal from the temperature sensor relay R3 and switches the starting switch 2 to the on state or outputs a switching signal when the driver inputs the starting key. When the driver starts the engine by inserting the ignition key into the key holder, the driver switches the on state, that is, the state, and outputs an electrical signal.

The starting motor connection relay R1 connects the starting motor 3 by receiving the switching signal of the starting relay R6, and connects the starting motor 3 and the engine 5 or breaks the connection state. To have.

The start timer T2 maintains the start switch 2 at the start position by the switching of the start motor connection relay R1, and has a function of delaying the signal for about 2 to 3 seconds, for example. Have It is usually desirable to set a time sufficient for the starting motor to start the engine when starting.

The engine heating timer T1 is for heating the engine for a predetermined time set when the engine is started by the start timer T2. In general, the engine heating timer T1 is for preheating the engine before starting the engine. The set time has a function of delaying the signal for, for example, about 4 to 5 seconds. The start timer T2 and the engine heating timer T1 allow the user to arbitrarily set a time (about 1 to 10 seconds).

The battery connection relay R2 switches the power supplied from the battery 1 mounted on the refrigeration vehicle, and is a relay switched when the control device of the present invention receives the power required for driving from the battery 1.

The door open / close detection relay R4 turns off the starting state when the door of the refrigeration vehicle is locked, and is a relay for preventing a safety accident when the door is locked from the outside while the starting state is turned on.

The start-off timer T3 turns off the driving state of the engine 5 when the temperature in the freezer falls below the set temperature, and the temperature of the freezer goes below the set temperature while the control device is driven while the engine is starting. When it descends, it is a timer which stops driving of the engine 5, and outputs a switching signal after the predetermined fixed time (about 2 to 3 second) passes. This timer has the function of controlling the electrical signal to cut off fuel drawn into the engine. The start-off timer T3 also allows the user to set an arbitrary time (about 1 to 10 seconds).

The first and second auxiliary relays R7 and R8 intermittently connect the plurality of relays connected to each other according to the starting state of the engine 5, and have mutually opposite functions. That is, when the first auxiliary relay R7 is on, the second auxiliary relay R8 is off. That is, when the second auxiliary relay R8 is on, the second auxiliary relay R7 is off. The state of the relays connected to the first and second auxiliary relays R7 and R8 is switched.

The third auxiliary relay R10 has a function of switching a plurality of other relay contacts connected when the engine is started.

The engine operation relay R5 is connected to the starter motor 3 and has a function of switching and controlling when the engine is started, and the auxiliary connection relay R9 interrupts a signal output from the control device to the outside.

In addition, in the present invention, in addition to the above configuration, when the engine 5 is started, a freezing device relay R11 for switching the power supplied from the charger 8 to drive the freezing device is included in the freezer 40. It is connected to the second terminal C2 of the first connector CON1.

The first terminal C1 of the first connector CON1 receives power from the battery 1 or the charger 8 and outputs the power to the control device. The fuse F1 prevents surge voltage or high voltage from being input. Is connected. The third terminal C3 is a terminal for receiving a signal from the temperature sensor S mounted in the freezer 40, and the fourth terminal C4 is a ground wire.

The fifth terminal C5, the seventh terminal C7, and the ninth terminal C9 of the second connector CON2 transmit signals output from the control device to the engine, start switch, start motor, and freezer of the vehicle body, respectively. 6 terminal (C6) is the engine input line, the eighth terminal (C8) is in contact with the first stage position of the start switch, the tenth terminal (C10) is respectively connected to the door to output a signal for control It is.

Referring to the flowchart of Figure 3 operation of the refrigeration vehicle control apparatus for a refrigerator vehicle of the present invention configured as described above are as follows.

First, the present invention detects the temperature in the freezer 40, the temperature sensor (S) when the temperature of the freezer is higher than the set temperature to drive the start switch to start the engine 5 by the operation of the starter motor 3, The generator 7 is driven by starting the engine to receive electricity from the charger 8 for charging the battery 1 with electricity generated by the generator, and to drive the refrigerating device 42. When the temperature in the freezer is below the set temperature is to continue the process of stopping the operation of the engine repeatedly.

In this process, first, the start state of the refrigeration vehicle is determined (S1), and in the case where the start is stopped, whether the refrigerating device 42 is operated is determined (S2). In other words, it is determined whether or not the driver will operate the refrigerating device 42. Therefore, in the present invention, whether to automatically operate the freezing device 42 of the refrigeration vehicle or to manually turn on or off the operation of the freezing device 42 must be determined first. In the freezer (40), it is necessary to first determine whether or not the frozen stored food is loaded. Therefore, if the frozen stored food is loaded while the refrigeration vehicle is operating, the refrigeration unit will always be in operation. If the refrigeration vehicle is not in operation, the operation of the refrigeration unit should be selected by the driver.

When the driver keeps the door locked while the ignition is turned off, the temperature sensor S in the freezer detects the temperature in the freezer 40 (S2). At this time, even if the start of the engine 5 is not turned off, if the driver switches the door to the locked state, the start is automatically turned off by the operation of the door open / close detection relay R4.

When the temperature sensor S in the freezer 40 senses the temperature in the freezer and exceeds the set temperature, the temperature sensor S outputs a detection signal to the control device 10. The state is switched by the detection signal input through the one connector (CON1).

By switching the state of the temperature sensor relay R3, the start relay R6 and the start motor connection relay R1 are operated respectively, and the start timer T2 and the engine heating timer T1 for starting are operated to start the start motor ( The engine is started by 3) (S4). On the other hand, when the engine is not started at once, the start relay R6 and the start motor connection relay R1, the start timer T2, and the engine heating timer T1 for starting the engine continue to operate.

As described above, when the engine is started, it is determined whether the engine is turned on (S5). If the engine is started, the driving power is output from the charger 8 to the freezer 42 of the freezer 40, and the freezer 42 is It is activated (S6).

The temperature in the freezer 40 is lowered by the operation of the freezer 42, and the temperature is lowered by the temperature sensor S (S7) when the temperature is lower than the set temperature (S8), the detection signal to the control device 10 Outputs The temperature sensor relay R3 of the control device 10 receives the detection signal and switches the state, and when the state is switched, the engine is turned off after a predetermined time set by the state switching of the start-off timer T3 elapses ( S9). Shut off fuel drawn into the engine to turn off the engine.

As described above, after the engine is turned off, the temperature sensor S in the freezer continuously detects the temperature, and when the temperature in the freezer rises above the set temperature, the engine is started through the control device 10 and the freezer 42 ) Is operated, and when the temperature in the freezer drops below the set temperature after the operation of the freezer 42, the operation of turning off the vehicle is repeatedly performed indefinitely.

The present invention outputs a control signal by intermittent control of a plurality of relays and timers, but control by a microprocessor by designing an electronic circuit may be made in place of the plurality of relays and timers.

As described above, the vehicle refrigeration apparatus control apparatus of the present invention detects the temperature in the freezer even when the refrigeration vehicle is not in operation or the driver is far from the refrigeration vehicle, and automatically starts or starts the engine according to the temperature change. By installing and operating a device for controlling a refrigeration device that can turn off the refrigeration vehicle, the refrigerated food in the freezer is not damaged, and at the same time, the engine is turned on or off according to the temperature change in the freezer to save fuel. It is possible to solve the noise problem and pollution problem because the engine is not started continuously.

Claims (2)

A temperature sensor relay (R3) for receiving a signal from a temperature sensor in the freezer and outputting a switching signal; A start relay (R6) for receiving a switching signal from the temperature sensor relay and switching the start switch to an on state or outputting a switching signal when a start key is input; Starting motor connection relay (R1) for connecting the starting motor in response to the switching signal of the starting relay, A start timer (T2) for maintaining the start switch for a set time at a start position by switching of the start motor connection relay; An engine heating timer T1 for heating the engine for a predetermined time set when the engine is started by the start timer; Battery connection relay (R2) for switching the power supplied from the battery of the refrigeration vehicle, A door open / close detection relay (R4) for turning off the starting state when the door of the refrigeration vehicle is locked; A start-off timer T3 for turning off the engine when the temperature in the freezer falls below a set temperature; An engine operation relay (R5) connected to the starting motor and switched at the start of the engine to control the engine; An auxiliary connection relay (R9) for controlling signals output from the control device to the outside; First and second auxiliary relays R7 and R8 for controlling the connection with other relays connected according to the starting state of the engine; And a third auxiliary relay (R10) for switching a plurality of other relay contacts connected when the engine is started. According to claim 1, Refrigeration device control apparatus for a refrigeration vehicle, characterized in that included in the freezer is a refrigeration unit relay for switching the power supplied from the charger to drive the refrigeration unit when the engine is started.