CN215337164U - Temperature and humidity adjusting device of refrigeration equipment - Google Patents
Temperature and humidity adjusting device of refrigeration equipment Download PDFInfo
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- CN215337164U CN215337164U CN202120835695.0U CN202120835695U CN215337164U CN 215337164 U CN215337164 U CN 215337164U CN 202120835695 U CN202120835695 U CN 202120835695U CN 215337164 U CN215337164 U CN 215337164U
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Abstract
The embodiment of the utility model discloses a temperature and humidity adjusting device of refrigeration equipment, which comprises: the refrigeration circulating pipeline is connected with a compressor, a condenser, a throttling device and an evaporator in sequence from head to tail; a first sensor is arranged at the outlet end of the evaporator and used for detecting the evaporation pressure or the evaporation temperature at the outlet of the evaporator; a return air pressure regulating valve is arranged on a pipeline between the evaporator and the compressor; the opening and closing or the flow of the return air pressure regulating valve and the throttling device are controlled by a controller according to the evaporation pressure or the evaporation temperature, the rise and the fall of the ambient temperature and the stability of the ambient temperature and the humidity of the refrigeration equipment are controlled, the flow and the evaporation temperature of the refrigerant of the refrigeration system are accurately controlled in a temperature and humidity stable region, and the ambient temperature and the humidity are controlled within a calibration range; and the energy consumption of the heating and humidifying system of the refrigeration equipment is greatly reduced in the stable stage of the environmental temperature and humidity.
Description
Technical Field
The utility model relates to the technical field of temperature and humidity regulation of refrigeration equipment, in particular to a temperature and humidity regulating device of the refrigeration equipment.
Background
The existing refrigeration system adopts the pressure regulating valve to regulate the pressure of the outlet of the evaporator, the traditional evaporation pressure regulating valve mainly comprises a valve body, a regulating rod, a spring, a corrugated pipe, a valve core and a pressure gauge joint, when in work, refrigerant vapor sent by the evaporator enters the valve from an inlet, overcomes the spring force, pushes the valve core to move upwards, opens a large valve port, and the refrigerant vapor is absorbed by a compressor through the outlet of the valve, if the pressure of the outlet of the evaporator is increased, the valve port is opened to be large, the outflow refrigerant is increased, so that the evaporation pressure is not reduced; on the contrary, if the pressure of the evaporator is reduced, the valve port is closed to be small, the outflow refrigerant is reduced, the evaporation pressure is increased again, and the reciprocating operation is carried out, so that the refrigerant in the evaporator is always kept in the set range. However, the traditional evaporation pressure regulating valve cannot automatically regulate evaporation pressure, the amount of the refrigerant cannot be regulated in real time, the heating of the heater and the balance of the refrigerating capacity by the humidifier are required to be regulated to realize the stability of the temperature and the humidity of the equipment, and the purpose of saving energy of the equipment cannot be achieved.
SUMMERY OF THE UTILITY MODEL
The present invention provides a temperature and humidity adjusting device for a refrigeration apparatus, which controls the temperature and humidity of the environment by controlling the opening degrees of a return air pressure adjusting valve and a throttling device.
In order to achieve the purpose, the utility model adopts the following technical scheme: a temperature and humidity adjusting device of a refrigerating apparatus includes:
the refrigeration circulating pipeline is connected with a compressor, a condenser, a throttling device and an evaporator in sequence from head to tail;
the first sensor is arranged at the outlet end of the evaporator and is used for detecting the evaporation pressure or the evaporation temperature at the outlet of the evaporator;
the air return pressure regulating valve is arranged on the refrigeration circulating pipeline between the evaporator and the compressor;
a controller, a signal input of the controller being communicatively connected to the first sensor; the signal output end of the controller is in communication connection with the air return pressure regulating valve and the throttling device; the controller is used for controlling the opening and closing of the return air pressure regulating valve and/or the throttling device or the flow rate according to the evaporation pressure or the evaporation temperature and controlling the output power of the heating regulating part or the humidifying regulating part.
Further, a second sensor is arranged in the refrigeration equipment and used for detecting the environment temperature and humidity in the refrigeration equipment; the signal input end of the controller is in communication connection with the second sensor; the controller is used for controlling the opening and closing of the return air pressure regulating valve and the throttling device or the flow rate according to the evaporation pressure or the evaporation temperature and the environment temperature and humidity.
Further, the controller includes:
the signal acquisition unit is used for acquiring return air pressure signals or temperature signals of the outlet of the evaporator and temperature and humidity signals;
the signal processing unit converts the temperature signal, the pressure signal or the temperature and humidity signal acquired by the signal acquisition unit into a digital signal;
the signal output unit outputs a corresponding control signal;
and the opening adjusting unit controls the opening and closing of the throttling device or the return air pressure adjusting valve or the flow according to the control signal.
Further, the first sensor is a return air pressure sensor or a return air temperature sensor.
Further, the throttling device is an electronic expansion valve or a thermal expansion valve or a capillary tube.
Further, the second sensor is a temperature and humidity sensor.
Further, the temperature and humidity adjusting method of the refrigeration equipment comprises the following steps:
acquiring temperature and humidity signals of the refrigeration equipment;
acquiring a return air pressure signal or a temperature signal of the outlet of the evaporator;
converting the collected temperature and humidity signal, the return air pressure signal and the temperature signal into digital signals;
the corresponding control signal is output, and the corresponding control signal is output,
and controlling the opening or flow of the throttling device and/or the return air pressure regulating valve and controlling the output power of the heating regulating part or the humidifying regulating part according to the control signal.
Further, after acquiring the return air pressure signal or the temperature signal at the outlet of the evaporator, the temperature at the outlet of the evaporator is compared with the preset dew point temperature interval in the controller, and when the temperature at the outlet of the evaporator does not fall into the preset dew point temperature interval, the controller calculates and gives a corresponding control signal to control the flow of the throttling device and the return air pressure regulating valve or close and control the heating regulating part or the output power of the humidifying regulating part.
Further, the controller controls the throttling device and the return air pressure regulating valve to maintain the current opening degree when detecting that the following conditions are met by the parameters: and when the temperature of the outlet of the evaporator is equal to the preset dew point temperature and/or the temperature of the outlet of the evaporator is within the preset temperature range.
The utility model has the beneficial effects that: the embodiment of the utility model provides a temperature and humidity adjusting device and an adjusting method of refrigeration equipment, which comprise the following steps: the refrigeration circulating pipeline is connected with a compressor, a condenser, a throttling device and an evaporator in sequence from head to tail; a first sensor is arranged at the outlet end of the evaporator and used for detecting the evaporation pressure or the evaporation temperature at the outlet of the evaporator; a return air pressure regulating valve is arranged on a pipeline between the evaporator and the compressor; the opening and closing or the flow of the return air pressure regulating valve and the throttling device are controlled by a controller according to the evaporation pressure or the evaporation temperature, the rise and the fall of the ambient temperature and the stability of the ambient temperature and the humidity of the refrigeration equipment are controlled, the flow and the evaporation temperature of the refrigerant of the refrigeration system are accurately controlled in a temperature and humidity stable region, and the ambient temperature and the humidity are controlled within a calibration range; and the energy consumption of the heating and humidifying system of the refrigeration equipment is greatly reduced in the stable stage of the environmental temperature and humidity, and the energy consumption of the compressor of the refrigeration system is reduced by adjusting the dew point value of the environmental temperature and humidity, so that the aim of saving energy of the system is fulfilled.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is an internal structure diagram of a temperature and humidity adjusting device of a refrigeration apparatus according to an embodiment of the present invention;
fig. 2 is an internal structural diagram of a controller of a temperature and humidity adjusting device of a refrigeration apparatus according to an embodiment of the present invention.
In the figure: 1. a refrigeration cycle line; 2. a compressor; 3. a condenser; 4. a throttling device; 5. an evaporator; 6. a first sensor; 7. a return air pressure regulating valve; 8. a controller; 9. a second sensor; 10. Heating the conditioning piece; 11. a humidification adjusting member; 12. a signal acquisition unit; 13. a signal processing unit; 14. A signal output unit; 15. an opening degree adjusting unit.
Detailed Description
The embodiment of the utility model provides a temperature and humidity adjusting device of refrigeration equipment, which is used for controlling the environment temperature and humidity by controlling the opening degrees of a return air pressure adjusting valve and a throttling device.
In order to make the objects, features and advantages of the present invention more apparent and understandable, the embodiments of the present invention will be described in detail and completely with reference to the accompanying drawings, and it is to be understood that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.
The first embodiment is as follows:
referring to fig. 1, an embodiment of the present invention provides a temperature and humidity adjusting device for a refrigeration apparatus, including:
the refrigeration cycle system comprises a refrigeration cycle pipeline 1, wherein a compressor 2, a condenser 3, a throttling device 4 and an evaporator 5 are sequentially connected with the refrigeration cycle pipeline 1 from head to tail;
the first sensor 6 is arranged at the outlet end of the evaporator 5, and the first sensor 6 is used for detecting the evaporation pressure or the evaporation temperature at the outlet of the evaporator 5;
a return air pressure regulating valve 7, the return air pressure regulating valve 7 being provided on the refrigeration cycle pipeline 1 between the evaporator 5 and the compressor 2;
a controller 8, a signal input of said controller 8 being communicatively connected to said first sensor 6; the signal output end of the controller 8 is in communication connection with the return air pressure regulating valve 7 and the throttling device 4; the controller 8 is used for controlling the opening and closing of the return air pressure regulating valve 7 and/or the throttling device 4 or the flow rate according to the evaporation pressure or the evaporation temperature and controlling the output power of the heating regulating part 10 or the humidifying regulating part 11.
Specifically, the first sensor 6 is arranged at the outlet of the evaporator 5, so as to detect the evaporation pressure or the evaporation temperature at the outlet of the evaporator 5, when the evaporation pressure at the outlet of the evaporator 5 is detected by the first sensor 6, the controller 8 determines the evaporation temperature corresponding to the evaporation pressure according to the refrigerant pressure-temperature comparison table, and the controller 8 adjusts the opening and closing of the return air pressure regulating valve 7 or the flow rate according to the evaporation pressure or the evaporation temperature. The temperature or pressure information of the outlet of the evaporator detected by the first sensor 6 and the second sensor 9 and the temperature and humidity information of the environment of the equipment are received, the controller 8 controls the opening degree of the throttling device 4 and/or the return air pressure regulating valve 7 and controls the output power of the heating regulating part 10 or the humidifying regulating part 11, so that the temperature and humidity of the equipment are controlled to rise and fall and the temperature and humidity of the equipment are kept stable.
Further, as shown in fig. 1, a second sensor 9 is arranged in the refrigeration equipment, and the second sensor 9 is used for detecting the ambient temperature and humidity in the refrigeration equipment; a signal input end of the controller 8 is in communication connection with the second sensor 9; the controller 8 is used for controlling the opening and closing of the return air pressure regulating valve 7 and the throttling device 4 or the flow rate according to the evaporation pressure or the evaporation temperature and the environment temperature and humidity so as to realize the accurate control of the temperature and the humidity of the equipment.
Specifically, a second sensor 9 is further arranged in the refrigeration equipment, and the second sensor 9 is used for detecting the ambient temperature and humidity in the refrigeration equipment; a signal input end of the controller 8 is in communication connection with the second sensor 9; the controller 8 is used for controlling the opening and closing of the return air pressure regulating valve 7 and the throttling device 4 or the flow rate after the calculation by utilizing the set dew point temperature of the temperature and the humidity according to the evaporation pressure or the evaporation temperature and the environment temperature and humidity, so as to realize the accurate control of the temperature and the humidity of the equipment.
Further, as shown in fig. 2, the controller 8 includes:
the signal acquisition unit 12 is used for acquiring a return air pressure signal or a temperature signal at the outlet of the evaporator 5 and a temperature and humidity signal of the evaporator;
the signal processing unit 13, the signal processing unit 13 converts the temperature signal, the pressure signal or the temperature and humidity signal collected by the signal collecting unit 12 into a digital signal;
a signal output unit 14, the signal output unit 14 outputting a corresponding control signal,
and the opening adjusting unit 15 is used for controlling the opening and closing of the throttling device 4 or the return air pressure adjusting valve 7 or the flow rate according to the control signal by the opening adjusting unit 15.
Specifically, the controller 8 is provided with a signal acquisition unit 12 for analog acquisition of return air pressure signals or temperature signals at the outlet of the evaporator 5 and temperature and humidity signals of the equipment environment, the return air pressure signals or temperature signals are converted into digital signals through a signal processing unit and are calculated and output through PID, the opening degrees of the throttling device 4 and the return air pressure regulating valve 7 are controlled through acquisition of the converted digital signals to regulate the flow rate of the refrigerant, and the temperature and humidity balance of the refrigeration equipment is achieved through control of the heating regulating device 10 and the humidifying regulating device 11. PID is as follows: abbreviations for proportionality, Integral, Differential. As the name implies, the PID control algorithm is a control algorithm which combines three links of proportion, integral and differentiation into a whole.
Further, the first sensor 6 is a return air pressure sensor or a return air temperature sensor.
Specifically, be equipped with return air pressure sensor or return air temperature sensor on the cold system pipeline of air conditioner, be used for gathering the compressor temperature of breathing in, judge and prevent that a large amount of liquid returns from appearing in the compressor with this temperature value cooperation suction pressure numerical value, perhaps can be used for doing the too low protection setting of suction pressure and use.
Further, the throttling device 4 is an electronic expansion valve or a thermal expansion valve or a capillary tube.
Specifically, the throttle device 4 is used for adjusting the flow rate of the refrigerant in the refrigeration pipeline, and the electronic expansion valve controls the voltage or current applied to the expansion valve by using an electric signal generated by the adjusted parameter, so as to achieve the purpose of adjusting the liquid supply amount. The thermostatic expansion valve controls the opening degree of the expansion valve by the superheat degree of the gaseous refrigerant at the outlet of the evaporator, and is widely applied to non-flooded evaporators. Capillary tubes, tubes with very small internal diameter, are called "capillaries". Generally, a capillary tube having an inner diameter of 1 mm or less is referred to as a capillary tube because the diameter of the capillary tube is small enough to be used as hair. Capillary tubes are commonly used in small-scale freon refrigeration units of 20kW or less. The capillary tube is made of a red copper tube, the length of the capillary tube is 1-6 m, and the inner diameter of the capillary tube is 0.5-2 mm. The requirements of refrigerant devices with different working conditions and different refrigerating capacities can be met through various combinations of lengths and pipe diameters, but the capillary tube cannot change along with the change of loads after being selected and installed, and the selection of a representative design working condition is extremely important for enabling the refrigeration device to operate at high efficiency in most of time.
Further, the second sensor 9 is a temperature and humidity sensor.
Specifically, the temperature and humidity sensor mostly uses a temperature and humidity integrated probe as a temperature measuring element, collects temperature and humidity signals, converts the temperature and humidity signals into current signals or voltage signals which are in linear relation with the temperature and humidity after being processed by circuits such as voltage stabilizing filtering, operational amplification, nonlinear correction, V/I conversion, constant current and reverse protection and the like, and outputs the current signals or voltage signals, and can also directly output interfaces such as 485 or 232 through a main control chip.
Example two:
a temperature and humidity adjusting method of refrigeration equipment comprises the following steps:
step 101: acquiring temperature and humidity signals of the refrigeration equipment;
step 102: acquiring a return air pressure signal or a temperature signal of the outlet of the evaporator;
step 103: converting the collected temperature and humidity signal, the collected return air pressure signal and the collected temperature signal into digital signals;
step 104: the corresponding control signal is output, and the corresponding control signal is output,
step 105: and controlling the opening or flow of the throttling device and/or the return air pressure regulating valve and controlling the output power of the heating regulating part or the humidifying regulating part according to the control signal.
Further, after acquiring the return air pressure signal or the temperature signal at the outlet of the evaporator 5, the temperature at the outlet of the evaporator is compared with the preset dew point temperature interval in the controller, and when the temperature at the outlet of the evaporator does not fall into the preset dew point temperature interval, the controller 8 calculates and provides a corresponding control signal to control the flow of the throttling device 4 and the return air pressure regulating valve 7 or close and control the heating regulating part 10 or the output power of the humidifying regulating part 11.
Specifically, a dew point temperature interval is preset in the controller, and when the temperature at the outlet of the evaporator does not fall into the preset dew point temperature interval, the controller 8 calculates and provides a corresponding control signal to control the flow rate of the throttling device 4 and the flow rate of the return air pressure regulating valve 7 to be small or closed.
Further, the controller 8 controls the throttling device 4 and the return air pressure regulating valve 7 to maintain the current opening degree when detecting that the following conditions are satisfied: and when the temperature of the outlet of the evaporator is equal to the preset dew point temperature and/or the temperature of the outlet of the evaporator is within the preset temperature range.
Specifically, when the temperature at the outlet of the evaporator is equal to or within the preset dew point temperature range, the throttle device 4 and the return air pressure regulating valve 7 are controlled to maintain the current opening degree.
In summary, an embodiment of the present invention provides a temperature and humidity adjusting device for a refrigeration apparatus, including: the refrigeration circulating pipeline is connected with a compressor, a condenser, a throttling device and an evaporator in sequence from head to tail; a first sensor is arranged at the outlet end of the evaporator and used for detecting the evaporation pressure or the evaporation temperature at the outlet of the evaporator; a return air pressure regulating valve is arranged on a pipeline between the evaporator and the compressor; the opening and closing or the flow of the return air pressure regulating valve and the throttling device are controlled by a controller according to the evaporation pressure or the evaporation temperature, the rise and the fall of the ambient temperature and the stability of the ambient temperature and the humidity of the refrigeration equipment are controlled, the flow and the evaporation temperature of the refrigerant of the refrigeration system are accurately controlled in a temperature and humidity stable region, and the ambient temperature and the humidity are controlled within a calibration range; and the energy consumption of the heating and humidifying system of the refrigeration equipment is greatly reduced in the stable stage of the environmental temperature and humidity, and the energy consumption of the compressor of the refrigeration system is reduced by adjusting the dew point value of the environmental temperature and humidity, so that the aim of saving energy of the system is fulfilled.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides a temperature humidity control device of refrigeration plant which characterized in that includes:
the refrigeration system comprises a refrigeration cycle pipeline (1), wherein a compressor (2), a condenser (3), a throttling device (4) and an evaporator (5) are sequentially connected with the refrigeration cycle pipeline (1) end to end;
the first sensor (6), the first sensor (6) is arranged at the outlet end of the evaporator (5), and the first sensor (6) is used for detecting the evaporation pressure or the evaporation temperature at the outlet of the evaporator (5);
the air return pressure regulating valve (7), the air return pressure regulating valve (7) is arranged on the refrigeration cycle pipeline (1) between the evaporator (5) and the compressor (2);
a controller (8), a signal input of the controller (8) being communicatively connected to the first sensor (6); the signal output end of the controller (8) is in communication connection with the air return pressure regulating valve (7) and the throttling device (4); the controller (8) is used for controlling the opening and closing of the return air pressure regulating valve (7) and/or the throttling device (4) or the flow rate according to the evaporation pressure or the evaporation temperature and controlling the output power of the heating regulating part (10) or the humidifying regulating part (11).
2. The temperature and humidity adjusting device of the refrigeration equipment according to claim 1, wherein a second sensor (9) is arranged in the refrigeration equipment, and the second sensor (9) is used for detecting the ambient temperature and humidity in the refrigeration equipment; the signal input end of the controller (8) is in communication connection with the second sensor (9); the controller (8) is used for controlling the opening and closing of the return air pressure regulating valve (7) and the throttling device (4) or the flow rate according to the evaporation pressure or the evaporation temperature and the environment temperature and humidity.
3. The temperature and humidity adjustment device of a refrigeration apparatus according to claim 2, wherein the controller (8) comprises:
the signal acquisition unit (12), the signal acquisition unit (12) is used for acquiring return air pressure signals or temperature signals of the outlet of the evaporator (5) and temperature and humidity signals;
the signal processing unit (13), the temperature signal, the pressure signal or the temperature and humidity signal that the said signal acquisition unit (12) gathers of the said signal processing unit (13) are changed into the digital signal;
a signal output unit (14), wherein the signal output unit (14) outputs a corresponding control signal;
and the opening degree adjusting unit (15), wherein the opening degree adjusting unit (15) controls the opening and closing of the throttling device (4) or the return air pressure adjusting valve (7) or the flow rate according to the control signal.
4. Temperature and humidity regulating device for a refrigerating apparatus according to claim 1, wherein the first sensor (6) is a return air pressure sensor or a return air temperature sensor.
5. The temperature and humidity control device of a refrigeration device according to claim 1, wherein the throttling device (4) is an electronic expansion valve or a thermal expansion valve or a capillary tube.
6. Temperature and humidity regulating device for a refrigerating apparatus according to claim 2, wherein the second sensor (9) is a temperature and humidity sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120835695.0U CN215337164U (en) | 2021-04-22 | 2021-04-22 | Temperature and humidity adjusting device of refrigeration equipment |
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| CN202120835695.0U CN215337164U (en) | 2021-04-22 | 2021-04-22 | Temperature and humidity adjusting device of refrigeration equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114646020A (en) * | 2022-03-31 | 2022-06-21 | 华能营口热电有限责任公司 | Power grid steam temperature and pressure reduction device, thermoelectric peak regulation system and pressure reduction regulation method |
| WO2023130619A1 (en) * | 2022-01-10 | 2023-07-13 | 东莞市升微机电设备科技有限公司 | Energy-saving control device, energy-saving control method, and storage medium |
-
2021
- 2021-04-22 CN CN202120835695.0U patent/CN215337164U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023130619A1 (en) * | 2022-01-10 | 2023-07-13 | 东莞市升微机电设备科技有限公司 | Energy-saving control device, energy-saving control method, and storage medium |
| CN114646020A (en) * | 2022-03-31 | 2022-06-21 | 华能营口热电有限责任公司 | Power grid steam temperature and pressure reduction device, thermoelectric peak regulation system and pressure reduction regulation method |
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