CN113928083A - Automatic cut-off temperature adjusting device for truck air conditioner temperature controller - Google Patents
Automatic cut-off temperature adjusting device for truck air conditioner temperature controller Download PDFInfo
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- CN113928083A CN113928083A CN202111212359.1A CN202111212359A CN113928083A CN 113928083 A CN113928083 A CN 113928083A CN 202111212359 A CN202111212359 A CN 202111212359A CN 113928083 A CN113928083 A CN 113928083A
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- 230000007613 environmental effect Effects 0.000 claims description 11
- 238000004378 air conditioning Methods 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 abstract description 2
- 239000003570 air Substances 0.000 description 23
- 239000003507 refrigerant Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000008844 regulatory mechanism Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/0073—Control systems or circuits characterised by particular algorithms or computational models, e.g. fuzzy logic or dynamic models
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Software Systems (AREA)
- Theoretical Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an automatic cut-off temperature adjusting device for a truck air conditioner temperature controller, which is mainly designed in the way that a self-adaptive cut-off temperature adjusting mechanism of the truck air conditioner temperature controller is constructed by a temperature acquisition circuit, a logic operation circuit, a load resistance switching circuit and the temperature controller which calibrates the corresponding relation between an input load resistance value and a cut-off temperature in advance. The invention realizes that the cut-off temperature of the temperature controller is automatically adjusted through the ambient temperature, and the starting frequency of the compressor can be reduced under the condition of lower ambient temperature, thereby obviously reducing the energy consumption of the air conditioner of the truck.
Description
Technical Field
The invention relates to the technical field of vehicle-mounted air conditioners, in particular to an automatic cut-off temperature adjusting device for a truck air conditioner temperature controller.
Background
The truck air-conditioning system works in such a way that when a power switch is turned on, a windshield switch and an AC switch are turned on, a condenser fan and a compressor can work, a refrigerant (R134a) flows through the refrigerant circulation of an evaporation core body in an air box, and a low-temperature liquid refrigerant formed by the action of the compressor, the condenser, a throttle pipe and the like absorbs the heat of the ambient air so as to realize refrigeration.
The existing truck air-conditioning control system mainly comprises a power supply control circuit, a blower control circuit, an electromagnetic clutch control circuit, a temperature control circuit and the like, wherein the power supply control circuit: the current of the electromagnetic clutch of the blower and the compressor is controlled, the storage battery → the ignition switch → the relay fuse → the electromagnetic coil of the air-conditioning relay → the air volume switch of the blower → the earth, and the air-conditioning relay can be switched on only when the ignition switch and the air volume switch are switched on. A blower control circuit: the air conditioner relay is broken, the air blower does not have power supply to stop rotating, the L gear is L gear, the air blower → R → R → earth, the resistance is maximum, the air quantity is minimum, the ML gear is ML gear, the air blower → R → R → earth, the resistance is centered, the MH gear, the air blower → R → earth, the resistance is centered, the H gear, the air blower → earth, and the resistance is minimum. Electromagnetic clutch control circuit: the circuit is controlled to be closed and opened by the electromagnetic clutch, the compressor is controlled to work and stop rotating, the storage battery → the fuse → the air conditioning relay → the pressure switch → the electromagnetic clutch → the earth, and the compressor can work only when the air conditioning relay and the pressure switch are simultaneously connected.
The conventional air conditioner temperature controller controls the on and off of an air conditioner through a fixed temperature value (the temperature value is called as the off temperature in the invention), and when the ambient temperature is lower, if the temperature controller adopts the same off temperature, the compressor is frequently switched off, so that the refrigerating capacity consumption and the oil consumption of an engine are increased.
Disclosure of Invention
In view of the above, the present invention aims to provide an automatic cut-off temperature adjustment device for a truck air conditioner thermostat, so as to solve the aforementioned problems.
The technical scheme adopted by the invention is as follows:
an automatic cut-off temperature regulating device for a truck air conditioner thermostat, comprising:
the temperature control circuit comprises a temperature acquisition circuit, a logic operation circuit, a load resistance switching circuit and a temperature controller for calibrating the corresponding relation between an input load resistance value and a cut-off temperature in advance;
the temperature acquisition circuit is connected with the input end of the logic operation circuit, the output end of the logic operation circuit is connected with the load resistance switching circuit, and the load resistance switching circuit is connected with the input end of the temperature controller;
the temperature acquisition circuit is used for outputting corresponding electric signals to the logic operation circuit according to different acquired environmental temperatures; the logic operation circuit is used for controlling the load resistance switching circuit to convert different load resistances according to a preset logic rule and in combination with an electric signal input by the temperature acquisition circuit; and the temperature controller is used for changing different preset cut-off temperatures according to different load resistance values input by the load resistance switching circuit.
In at least one possible implementation manner, the temperature acquisition circuit comprises a plurality of voltage comparators, a plurality of reference resistors and an ambient temperature sensor;
the reference resistor is connected with the corresponding voltage comparator, the environment temperature sensor is respectively connected with all the voltage comparators, and the voltage comparators are connected with the input end of the logic operation circuit.
In at least one possible implementation manner, the logic operation circuit includes an encoder, an operator, and a decoder, which are connected in sequence, an input end of the encoder is connected to the temperature acquisition circuit, and an output end of the decoder is connected to the load resistance switching circuit.
In at least one possible implementation manner, the load resistance switching circuit includes: the load resistors are in one-to-one correspondence with the relays;
the load resistor is respectively connected with the input ends of the relay and the temperature controller, and the relay is respectively correspondingly connected with a plurality of output ends of the logic operation circuit.
In at least one possible implementation manner, the logic operation circuit is configured to output different level signals through a plurality of output terminals to enable the correspondingly connected relays to operate, so that a plurality of load resistors are connected to the temperature controller in different combination manners.
In at least one possible implementation manner, the load resistors are at least two.
The main design concept of the invention is that a self-adaptive regulation mechanism of the cut-off temperature of the truck air conditioner temperature controller is constructed by a temperature acquisition circuit, a logic operation circuit, a load resistance switching circuit and a temperature controller which calibrates the corresponding relation between the input load resistance and the cut-off temperature in advance. The invention realizes that the cut-off temperature of the temperature controller is automatically adjusted through the ambient temperature, and the starting frequency of the compressor can be reduced under the condition of lower ambient temperature, thereby obviously reducing the energy consumption of the air conditioner of the truck.
Drawings
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the accompanying drawings, in which:
fig. 1 is a block diagram of an automatic cut-off temperature control device for a truck air conditioner thermostat according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
The invention provides an embodiment of a cut-off temperature automatic regulating device for a truck air conditioner temperature controller, and particularly, as shown in figure 1, the cut-off temperature automatic regulating device comprises: the temperature control circuit comprises a temperature acquisition circuit, a logic operation circuit, a load resistance switching circuit and a temperature controller for calibrating the corresponding relation between an input load resistance value and a cut-off temperature in advance;
the temperature acquisition circuit is connected with the input end of the logic operation circuit, the output end of the logic operation circuit is connected with the load resistance switching circuit, and the load resistance switching circuit is connected with the input end of the temperature controller;
the temperature acquisition circuit is used for outputting corresponding electric signals to the logic operation circuit according to different acquired environmental temperatures; the logic operation circuit is used for controlling the load resistance switching circuit to convert different load resistances according to a preset logic rule and in combination with an electric signal input by the temperature acquisition circuit; and the temperature controller is used for changing different preset cut-off temperatures according to different load resistance values input by the load resistance switching circuit.
Furthermore, the temperature acquisition circuit comprises a plurality of voltage comparators, a plurality of reference resistors and an ambient temperature sensor;
the reference resistor is connected with the corresponding voltage comparator, the environment temperature sensor is respectively connected with all the voltage comparators, and the voltage comparators are connected with the input end of the logic operation circuit.
Furthermore, the logic operation circuit comprises an encoder, an operator and a decoder which are connected in sequence, the input end of the encoder is connected with the temperature acquisition circuit, and the output end of the decoder is connected with the load resistance switching circuit.
Further, the load resistance switching circuit includes: the load resistors are in one-to-one correspondence with the relays;
the load resistor is respectively connected with the input ends of the relay and the temperature controller, and the relay is respectively correspondingly connected with a plurality of output ends of the logic operation circuit.
Furthermore, the logic operation circuit is used for outputting different level signals through a plurality of output ends to enable the correspondingly connected relays to act, so that a plurality of load resistors are connected to the temperature controller in different combination modes.
Further, the load resistance is at least two.
In some specific embodiments (it should be noted that the following embodiments are only illustrative, and the type of devices, the number of devices, the encoding and decoding logic, the temperature setting rules, etc. involved in the embodiments may be changed according to actual situations), a conventional power source may be used for supplying power, a thermistor may be used as the ambient temperature sensor, and a fixed resistor may be connected in series to form a voltage dividing circuit; meanwhile, 9 reference resistors are selected in design, the 9 reference resistors are connected in series and are correspondingly connected with 8 voltage comparators between every two reference resistors, the environment temperature sensor is also connected with 8 voltage comparators respectively, and different electric signals can be provided for the encoder according to the selection and the presetting of different resistance values as follows:
(1) when the ambient temperature is less than or equal to 0 ℃, the voltage of the forward input end of the voltage comparator U1-U8 is lower than that of the reverse input end, and the voltage comparator U1-U8 outputs low level;
(2) when the environmental temperature is higher than 0 ℃ and less than or equal to 5 ℃, the voltage at the forward input end of the voltage comparator U8 is higher than that at the reverse input end, the voltage comparator U8 outputs an analog level, the voltage at the forward input end of the voltage comparators U1-U7 is lower than that at the reverse input end, and the voltage comparators U1-U7 output a low level;
(3) when the environmental temperature is higher than 5 ℃ and lower than or equal to 10 ℃, the voltage of the forward input end of the voltage comparator U7-U8 is higher than that of the reverse input end, the voltage comparator U7-U8 outputs a high level, the voltage of the forward input end of the voltage comparator U1-U6 is lower than that of the reverse input end, and the voltage comparator U1-U7 outputs a low level;
(4) when the environmental temperature is higher than 10 ℃ and lower than or equal to 15 ℃, the voltage of the forward input end of the voltage comparator U6-U8 is higher than that of the reverse input end, the voltage comparator U6-U8 outputs a high level, the voltage of the forward input end of the voltage comparator U1-U5 is lower than that of the reverse input end, and the voltage comparator U1-U6 outputs a low level;
(5) when the environmental temperature is more than 15 ℃ and less than or equal to 20 ℃, the voltage of the forward input end of the voltage comparator U5-U8 is higher than that of the reverse input end, the voltage comparator U5-U8 outputs a high level, the voltage of the forward input end of the voltage comparator U1-U4 is lower than that of the reverse input end, and the voltage comparator U1-U4 outputs a low level;
(6) when the environmental temperature is higher than 20 ℃ and lower than or equal to 25 ℃, the voltage at the forward input end of the voltage comparator U4-U8 is higher than that at the reverse input end, the voltage comparator U4-U8 outputs a high level, the voltage at the forward input end of the voltage comparator U1-U3 is lower than that at the reverse input end, and the voltage comparator U1-U3 outputs a low level;
(7) when the environmental temperature is higher than 25 ℃ and lower than or equal to 30 ℃, the voltage at the forward input end of the voltage comparator U3-U8 is higher than that at the reverse input end, the voltage comparator U3-U8 outputs a high level, the voltage at the forward input end of the voltage comparator U1-U2 is lower than that at the reverse input end, and the voltage comparator U1-U2 outputs a low level;
(8) when the environmental temperature is higher than 30 ℃ and lower than or equal to 35 ℃, the voltage of the forward input end of the voltage comparator U2-U8 is higher than that of the reverse input end, the voltage comparator U2-U8 outputs a high level, the voltage of the forward input end of the voltage comparator U1 is lower than that of the reverse input end, and the voltage comparator U1 outputs a low level;
(9) when the ambient temperature is more than or equal to 35 ℃, the voltage of the forward input end of the voltage comparator U1-U8 is higher than that of the reverse input end, and the voltage comparator U1-U8 outputs high level.
Moreover, the encoding rule of the encoder, that is, the corresponding relationship between the input and the output of the encoder, may be set according to the combination of the different input electrical signals, where, for example, when the ambient temperature is less than or equal to 10 ℃ and less than 5 ℃, the input of the encoder is 00000011, and the corresponding output of the encoder may be 0010; other details are not described, and logic specification can be specified as required.
Accordingly, the operator can also be set according to the output of the encoder, and as in the above example, when the operator input is 0010 of the encoder output, the operator output can be set to 01; the input and output rules of the decoder can also be set as required, for example, when the electrical signal input to the decoder is 01, the decoder can output 011 through three output terminals (at least two output terminals).
And the output end of each decoder is respectively and correspondingly connected with the coil end of the relay, and the combination of the load resistors is realized through the action of the relays. For example, when the decoder outputs 011, that is, two relay coils are energized, and each relay is connected with its own load resistor in association, the load resistors corresponding to the two energized relays in this example can be jointly input to the thermostat, and the thermostat can calibrate different cut-off temperatures corresponding to different input load resistance values in advance, so that, by combining the above examples, when the ambient temperature is detected to be less than or equal to 10 ℃ and less than 5 ℃, the thermostat sets the current cut-off temperature to 6 ℃ (schematic) according to the sum of the two input resistors, so that the purpose of changing the cut-off temperature of the thermostat according to different ambient temperatures can be achieved.
In summary, the main design concept of the present invention is that a truck air conditioner temperature controller cut-off temperature adaptive adjustment mechanism is constructed by a temperature acquisition circuit, a logic operation circuit, a load resistance switching circuit and a temperature controller which calibrates the corresponding relationship between an input load resistance value and a cut-off temperature in advance, specifically, the temperature acquisition circuit outputs a corresponding electrical signal to the logic operation circuit according to different acquired environmental temperatures, the logic operation circuit controls the load resistance switching circuit to change different load resistances according to a preset logic rule and in combination with the electrical signal input by the temperature acquisition circuit, and the temperature controller changes different preset cut-off temperatures according to the input load resistance. The invention realizes that the cut-off temperature of the temperature controller is automatically adjusted through the ambient temperature, and the starting frequency of the compressor can be reduced under the condition of lower ambient temperature, thereby obviously reducing the energy consumption of the air conditioner of the truck.
In the embodiments of the present invention, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, and means that there may be three relationships, for example, a and/or B, and may mean that a exists alone, a and B exist simultaneously, and B exists alone. Wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" and similar expressions refer to any combination of these items, including any combination of singular or plural items. For example, at least one of a, b, and c may represent: a, b, c, a and b, a and c, b and c or a and b and c, wherein a, b and c can be single or multiple.
The structure, features and effects of the present invention have been described in detail with reference to the embodiments shown in the drawings, but the above embodiments are merely preferred embodiments of the present invention, and it should be understood that technical features related to the above embodiments and preferred modes thereof can be reasonably combined and configured into various equivalent schemes by those skilled in the art without departing from and changing the design idea and technical effects of the present invention; therefore, the invention is not limited to the embodiments shown in the drawings, and all the modifications and equivalent embodiments that can be made according to the idea of the invention are within the scope of the invention as long as they are not beyond the spirit of the description and the drawings.
Claims (6)
1. A cut-off temperature automatic regulating device for a truck air conditioner temperature controller is characterized by comprising: the temperature control circuit comprises a temperature acquisition circuit, a logic operation circuit, a load resistance switching circuit and a temperature controller for calibrating the corresponding relation between an input load resistance value and a cut-off temperature in advance;
the temperature acquisition circuit is connected with the input end of the logic operation circuit, the output end of the logic operation circuit is connected with the load resistance switching circuit, and the load resistance switching circuit is connected with the input end of the temperature controller;
the temperature acquisition circuit is used for outputting corresponding electric signals to the logic operation circuit according to different acquired environmental temperatures; the logic operation circuit is used for controlling the load resistance switching circuit to convert different load resistances according to a preset logic rule and in combination with an electric signal input by the temperature acquisition circuit; and the temperature controller is used for changing different preset cut-off temperatures according to different load resistance values input by the load resistance switching circuit.
2. The automatic cut-off temperature regulating device for the truck air conditioner thermostat according to claim 1, wherein the temperature acquisition circuit comprises a plurality of voltage comparators, a plurality of reference resistors and an ambient temperature sensor;
the reference resistor is connected with the corresponding voltage comparator, the environment temperature sensor is respectively connected with all the voltage comparators, and the voltage comparators are connected with the input end of the logic operation circuit.
3. The automatic cut-off temperature regulating device for the truck air-conditioning temperature controller as claimed in claim 1, wherein the logic operation circuit comprises an encoder, an operator and a decoder which are connected in sequence, the input end of the encoder is connected with the temperature acquisition circuit, and the output end of the decoder is connected with the load resistance switching circuit.
4. The thermostat of claim 1, wherein the load resistance switching circuit comprises: the load resistors are in one-to-one correspondence with the relays;
the load resistor is respectively connected with the input ends of the relay and the temperature controller, and the relay is respectively correspondingly connected with a plurality of output ends of the logic operation circuit.
5. The automatic cut-off temperature adjusting device for the truck air conditioner temperature controller as claimed in claim 4, wherein the logic operation circuit is used for outputting different level signals through a plurality of output terminals to enable correspondingly connected relays to operate, so that a plurality of load resistors are connected to the temperature controller in different combination modes.
6. The thermostat of claim 4 or 5, wherein the load resistance is at least two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111212359.1A CN113928083A (en) | 2021-10-18 | 2021-10-18 | Automatic cut-off temperature adjusting device for truck air conditioner temperature controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111212359.1A CN113928083A (en) | 2021-10-18 | 2021-10-18 | Automatic cut-off temperature adjusting device for truck air conditioner temperature controller |
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| CN113928083A true CN113928083A (en) | 2022-01-14 |
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| CN202111212359.1A Pending CN113928083A (en) | 2021-10-18 | 2021-10-18 | Automatic cut-off temperature adjusting device for truck air conditioner temperature controller |
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Citations (12)
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| CN106322664A (en) * | 2016-08-25 | 2017-01-11 | 珠海格力电器股份有限公司 | Air conditioning unit control device, control method and air conditioning unit |
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| CN108444078A (en) * | 2018-03-22 | 2018-08-24 | 奥克斯空调股份有限公司 | A kind of compressor frequency control method and device |
| CN208993454U (en) * | 2018-11-06 | 2019-06-18 | 郑州科林车用空调有限公司 | A kind of high reliability hybrid power passenger car air-conditioner controller |
| CN110849493A (en) * | 2019-11-22 | 2020-02-28 | 成都三零嘉微电子有限公司 | Temperature detection circuit |
| CN212708826U (en) * | 2020-05-29 | 2021-03-16 | 安徽江淮汽车集团股份有限公司 | Truck PTC auxiliary heating system and automobile air conditioning system |
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2021
- 2021-10-18 CN CN202111212359.1A patent/CN113928083A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3702065A (en) * | 1971-08-06 | 1972-11-07 | Gen Motors Corp | Automobile air conditioning compressor superheat safety and ambient switch |
| JPH06127262A (en) * | 1991-04-10 | 1994-05-10 | Nippondenso Co Ltd | Vehicle air-conditioner |
| CN2115500U (en) * | 1992-01-10 | 1992-09-09 | 张丙华 | High-precision electronic logic temp. controller |
| CN2115249U (en) * | 1992-02-22 | 1992-09-09 | 周乐昌 | Automobile air conditioner control unit assembly |
| CN102269455A (en) * | 2011-04-28 | 2011-12-07 | 上海奉天电子有限公司 | Air conditioning device for electric vehicle |
| CN106042831A (en) * | 2016-06-16 | 2016-10-26 | 美的集团武汉制冷设备有限公司 | Control method for vehicle-mounted air conditioner system and vehicle-mounted air conditioner system |
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| CN106482298A (en) * | 2016-10-24 | 2017-03-08 | 合肥舒实工贸有限公司 | A kind of control device for temperature of air conditioner |
| CN108444078A (en) * | 2018-03-22 | 2018-08-24 | 奥克斯空调股份有限公司 | A kind of compressor frequency control method and device |
| CN208993454U (en) * | 2018-11-06 | 2019-06-18 | 郑州科林车用空调有限公司 | A kind of high reliability hybrid power passenger car air-conditioner controller |
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