阅读说明：本技术 节能型焓差试验室 (Energy-saving enthalpy difference laboratory ) 是由 唐睿 罗祥坤 吉常斌 陆考灵 黎泽明 于 2020-12-14 设计创作，主要内容包括：本发明的节能型焓差试验室,通过桶泵制冷系统的设计,能够在第一蒸发器,第二蒸发器形成15℃以上的蒸发温度,使得在高温高湿的工况下,制冷系统不会自发产生冗余除湿,能够防止空气湿度过低,从而避免大量加湿补偿；当室外温度较低时,可以通过储液桶对室内室外形成不同的蒸发温度供冷；同时通过第二冷凝器和第三冷凝器的热量对房间进行加热调节,起到热回收作用,避免了电加热的投入；通过室内侧和室外侧的超声波加湿器,根据等焓加湿的原理避免电加湿的冗余热量问题,大大提高了试验室的节能效果。(According to the energy-saving enthalpy difference test room, through the design of the barrel pump refrigerating system, the evaporating temperature of more than 15 ℃ can be formed in the first evaporator and the second evaporator, so that the refrigerating system cannot spontaneously generate redundant dehumidification under the working condition of high temperature and high humidity, the air humidity can be prevented from being too low, and a large amount of humidification compensation is avoided; when the outdoor temperature is lower, different evaporation temperatures can be formed indoors and outdoors through the liquid storage barrel for cooling; meanwhile, the room is heated and regulated by the heat of the second condenser and the third condenser, so that the heat recovery effect is achieved, and the investment of electric heating is avoided; the ultrasonic humidifiers on the indoor side and the outdoor side avoid the problem of redundant heat of electric humidification according to the principle of isenthalpic humidification, and greatly improve the energy-saving effect of a laboratory.)

1. An energy-efficient enthalpy difference laboratory, comprising:

the system comprises a liquid storage barrel, a first pressure regulating valve, a compressor, a first condenser, a first pump, a first evaporator, a second pump, a second evaporator, a second condenser, a third condenser, a pressure difference regulating valve, an outdoor test room, an indoor humidifier and an outdoor humidifier;

the liquid storage barrel, the first pressure regulating valve, the compressor and the first condenser are sequentially connected in a circulating manner to form a first circulation;

the liquid storage barrel, the first pump and the first evaporator are sequentially connected in a circulating manner to form a second circulation;

the liquid storage barrel, the second pump and the second evaporator are sequentially connected in a circulating manner to form a third circulation;

the pressure difference regulating valve is arranged between the compressor and the first condenser;

the second condenser is arranged in the outdoor test room, the first end of the refrigerant side of the second condenser is connected between the compressor and the differential pressure regulating valve, and the second end of the refrigerant side of the second condenser is connected between the first condenser and the differential pressure regulating valve;

the third condenser is arranged in the outdoor test room, the first end of the refrigerant side of the third condenser is connected between the compressor and the differential pressure regulating valve, and the second end of the refrigerant side of the third condenser is connected between the first condenser and the differential pressure regulating valve;

the indoor humidifier and the outdoor humidifier are ultrasonic humidifiers and are respectively installed in the indoor test room and the outdoor test room.

2. The energy-efficient enthalpy difference laboratory according to claim 1, further comprising:

an expansion valve disposed between the first pump and the evaporator;

a second valve connected in parallel at both ends of the expansion valve;

a first valve disposed between the first evaporator and the compressor, and the first valve is located between the first cycle and the second cycle; and

and the third valve is arranged between the liquid storage barrel and the first pressure regulating valve.

3. The energy-efficient enthalpy difference laboratory according to claim 1, further comprising:

an outdoor side temperature sensor arranged in the outdoor test room, wherein the rotating speed of the first pump is set to be adjusted according to the reading of the outdoor side temperature sensor so as to adjust the temperature of the outdoor test room;

an indoor side temperature sensor arranged in the indoor test room, wherein the rotating speed of the second pump is set to be adjusted according to the reading of the indoor side temperature sensor so as to adjust the temperature of the indoor test room;

the outdoor humidifier is used for adjusting the humidity according to the reading of the outdoor humidity sensor;

the indoor side humidity transducer who sets up between indoor test to and according to indoor side humidity transducer's reading adjusts humidity's indoor side humidifier.

4. The energy-efficient enthalpy difference laboratory according to claim 1, further comprising:

a first regulating valve connected with the second condenser and arranged to regulate according to the reading of the outdoor side temperature sensor;

a second regulating valve connected to the third condenser and configured to regulate based on a reading of the indoor side temperature sensor.

5. The energy efficient enthalpy difference laboratory according to any one of claims 1 to 4, wherein the second cycle further comprises a one-way valve disposed between the first evaporator and the reservoir.

6. The energy-efficient enthalpy difference laboratory according to any one of claims 1 to 4, further comprising:

the opening degree of the first pressure regulating valve is set to be regulated according to the inlet pressure of the compressor;

the second pressure regulating valve is connected between the outlet of the first condenser and the liquid storage barrel, and the opening degree of the second pressure regulating valve is set to be regulated according to the pressure of the first condenser;

and the opening degree of the hot gas bypass valve is set to be adjusted according to the pressure of the liquid storage barrel.

Technical Field

The invention relates to an energy-saving enthalpy difference laboratory.

Background

The evaporation temperature of an evaporator of an existing air-conditioning laboratory refrigeration system is often low and is generally below 15 ℃, because the temperature is far lower than the dew point temperature of air, the refrigeration system can spontaneously generate redundant dehumidification on the air, the air humidity in the laboratory is too low, when the laboratory needs to be tested under the working condition of high temperature and high humidity, a large amount of electric heating and electric humidification balance working conditions are needed, the running energy consumption of the laboratory is high, and particularly when the humidification brings redundant heat, the refrigeration system is especially suitable for being used. In addition, the existing air-conditioning laboratory refrigeration system has a small temperature control range, can not be freely switched between low-temperature circulation and high-temperature circulation, and can not meet various working condition requirements of a laboratory.

Disclosure of Invention

According to an aspect of the present invention, there is provided an energy-saving enthalpy difference laboratory, including:

the system comprises a liquid storage barrel, a first pressure regulating valve, a compressor, a first condenser, a first pump, a first evaporator, a second pump, a second evaporator, a second condenser, a third condenser, a pressure difference regulating valve, an outdoor test room, an indoor humidifier and an outdoor humidifier;

the liquid storage barrel, the first pressure regulating valve, the compressor and the first condenser are sequentially connected in a circulating manner to form a first circulation;

the liquid storage barrel, the first pump and the first evaporator are sequentially connected in a circulating manner to form a second circulation;

the liquid storage barrel, the second pump and the second evaporator are sequentially connected in a circulating manner to form a third circulation;

the pressure difference regulating valve is arranged between the compressor and the first condenser;

the second condenser is arranged in the outdoor test room, the first end of the refrigerant side of the second condenser is connected between the compressor and the differential pressure regulating valve, and the second end of the refrigerant side of the second condenser is connected between the first condenser and the differential pressure regulating valve;

the third condenser is arranged in the outdoor test room, the first end of the refrigerant side of the third condenser is connected between the compressor and the differential pressure regulating valve, and the second end of the refrigerant side of the third condenser is connected between the first condenser and the differential pressure regulating valve;

the indoor humidifier and the outdoor humidifier are ultrasonic humidifiers and are respectively installed in the indoor test room and the outdoor test room.

According to the energy-saving enthalpy difference test room, through the design of the barrel pump refrigerating system, the evaporating temperature of more than 15 ℃ can be formed in the first evaporator and the second evaporator, so that the refrigerating system cannot spontaneously generate redundant dehumidification under the working condition of high temperature and high humidity, the air humidity can be prevented from being too low, and a large amount of humidification compensation is avoided; when the outdoor temperature is lower, different evaporation temperatures can be formed indoors and outdoors through the liquid storage barrel for cooling; meanwhile, the room is heated and regulated by the heat of the second condenser and the third condenser, so that the heat recovery effect is achieved, and the investment of electric heating is avoided; the ultrasonic humidifiers on the indoor side and the outdoor side avoid the problem of redundant heat of electric humidification according to the principle of isenthalpic humidification, and greatly improve the energy-saving effect of a laboratory.

In some embodiments, the energy-efficient enthalpy difference laboratory further comprises:

an expansion valve disposed between the first pump and the evaporator;

a second valve connected in parallel at both ends of the expansion valve;

a first valve disposed between the first evaporator and the compressor, and the first valve is located between the first cycle and the second cycle; and

and the third valve is arranged between the liquid storage barrel and the first pressure regulating valve.

The energy-saving enthalpy difference laboratory can be freely switched between low-temperature circulation and high-temperature circulation, the temperature control range is large, various working condition requirements of the laboratory can be met, adjustment in different temperature ranges is achieved through one system, switching between different systems is not needed, and energy consumption of the laboratory is reduced.

In some embodiments, the energy-efficient enthalpy difference laboratory further comprises:

an outdoor side temperature sensor arranged in the outdoor test room, wherein the rotating speed of the first pump is set to be adjusted according to the reading of the outdoor side temperature sensor, so that the temperature of the outdoor test room is adjusted;

an indoor side temperature sensor arranged in the indoor test room, wherein the rotating speed of the second pump is set to be adjusted according to the reading of the indoor side temperature sensor, so that the temperature of the indoor test room is adjusted;

the outdoor humidifier is used for adjusting the humidity according to the reading of the outdoor humidity sensor;

the indoor side humidity transducer who sets up between indoor test to and according to indoor side humidity transducer's reading adjusts humidity's indoor side humidifier.

In some embodiments, the energy-efficient enthalpy difference laboratory further comprises:

a first regulating valve connected with the second condenser and arranged to regulate according to the reading of the outdoor side temperature sensor;

a second regulating valve connected to the third condenser and configured to regulate based on a reading of the indoor side temperature sensor.

In some embodiments, the second cycle further comprises a one-way valve disposed between the first evaporator and the reservoir.

In some embodiments, the energy-efficient enthalpy difference laboratory further comprises:

the opening degree of the first pressure regulating valve is set to be regulated according to the inlet pressure of the compressor;

a second pressure regulating valve connected between the outlet of the first condenser and the liquid storage barrel, wherein the opening degree of the second pressure regulating valve is set to be regulated according to the pressure of the first condenser;

and the opening degree of the hot gas bypass valve is set to be adjusted according to the pressure of the liquid storage barrel.

Drawings

Figure 1 is a schematic diagram of an energy efficient enthalpy difference laboratory according to some embodiments of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Figure 1 schematically illustrates an energy efficient enthalpy difference laboratory according to some embodiments of the present invention including a barrel pump refrigeration system, an outdoor test booth 3, an indoor test booth 4, an outdoor air handler 5, an indoor air handler 6, an outdoor temperature and humidity control system, and an indoor temperature and humidity control system.

Referring to fig. 1, the drum pump refrigeration system includes a liquid storage drum 11, a first pump 12, an expansion valve 13, a second valve 14, a first evaporator 15, a first valve 16, a check valve 17, a third valve 18, a first pressure regulating valve 19, a second pressure regulating valve 20, a compressor 21, a differential pressure regulating valve 31, a first condenser 23, a hot gas bypass valve 24, a second condenser 7, a first regulating valve 28, a third condenser 8, and a second regulating valve 30. Wherein the opening degree of the first pressure regulating valve 19 is set to be adjusted according to the inlet pressure of the compressor, and the opening degree of the second pressure regulating valve 20 is set to be adjusted according to the pressure of the first condenser 23.

The liquid side of the liquid storage barrel 11, the first pump 12, the expansion valve 13, the first heat exchange side of the first evaporator 15, the first valve 16, the compressor 21, the differential pressure regulating valve 31, the first condenser 23, the second pressure regulating valve 20, and the gas side of the liquid storage barrel 11 are connected in sequence to form a low-temperature cycle. The second valve 14 is connected in parallel to both ends of the expansion valve 13, the outlet of the evaporator is connected to the gas side of the receiver 11 through the check valve 17, the compressor 21, the first pressure regulating valve 19, the third valve 18 and the gas side of the receiver 11 are connected in sequence, and the hot gas bypass valve 24 is disposed between the inlet of the first condenser 23 and the gas side of the receiver 11 for increasing the temperature and pressure of the refrigerant in the receiver 11 by bypassing the hot gas at the outlet of the compressor 21 to the receiver 11. The hot gas bypass valve 24 may be a regulating valve whose opening degree is set to be regulated according to the pressure of the reservoir. The first valve 16, the second valve 14, and the third valve 18 may be on-off valves.

When low-temperature circulation is performed, the second valve 14 is closed, the first valve 16 is opened, and the third valve 18 is closed, so that the liquid side of the liquid storage barrel 11, the first pump 12, the expansion valve 13, the first heat exchange side of the first evaporator 15, the first valve 16, the compressor 21, the differential pressure adjusting valve 31, the first condenser 23, the second pressure adjusting valve 20, and the gas side of the liquid storage barrel 11 are sequentially communicated, and the evaporation temperature range of the first evaporator 15 is about-10 ℃ to-40 ℃.

When carrying out the high temperature cycle, second valve 14 opens, first valve 16 closes, third valve 18 opens, the liquid side of stock solution bucket 11, first pump 12, second valve 14, first evaporimeter 15, the gaseous side of check valve 17 and stock solution bucket 11 communicates in proper order, form the second cycle, first evaporimeter 15 absorbs the heat, make refrigerant temperature and pressure in the stock solution bucket 11 promote, through this phase transition circulation, can realize the evaporating temperature more than 15 ℃, make under the operating mode of high temperature and high humidity, refrigerating system can not produce redundancy dehumidification voluntarily, can prevent that air humidity from crossing lowly, thereby avoid a large amount of humidification compensations, the laboratory operation energy consumption has been reduced. Meanwhile, the gas side of the liquid storage barrel 11, the third valve 18, the first pressure regulating valve 19, the compressor 21, the differential pressure regulating valve 31, the first condenser 23, the second pressure regulating valve 20 and the gas side of the liquid storage barrel 11 are sequentially communicated to form a first cycle, and the first condenser 23 radiates heat, so that the temperature and pressure of the refrigerant in the liquid storage barrel 11 are reduced. The evaporation temperature of the first evaporator 15 ranges from about 0 c to about 40 c.

During the medium temperature cycle, the second valve 14 is closed, the first valve 16 is opened, the third valve 18 is opened, the liquid side of the liquid storage barrel 11, the first pump 12, the expansion valve 13, the first heat exchanging side of the first evaporator 15, the first valve 16, the compressor 21, the differential pressure adjusting valve 31, the first condenser 23, the second pressure adjusting valve 20, and the gas side of the liquid storage barrel 11 are sequentially communicated, and the refrigerant gas is supplied from the liquid storage barrel 11 through the branch where the third valve 18 is located. The evaporation temperature of the first evaporator 15 ranges from about-15 c to about 5 c.

Referring to fig. 1, in some embodiments, the cycle of the receiver-pump-evaporator-receiver may be provided in plurality, that is, in addition to the cycle of the receiver 11-first pump 12-first evaporator 15-receiver 11, a similar cycle may be provided, for example, the barrel pump refrigeration system may further include a third cycle, the third cycle includes a second pump 25 and a second evaporator 26, the liquid side of the receiver 11, the second pump 25, the first heat exchange side of the second evaporator 26 and the gas side of the receiver 11 are sequentially connected to form a third cycle, and form another high temperature cycle together with the first cycle, and the second evaporator 26 absorbs heat, so that the temperature and pressure of the refrigerant in the receiver 11 are raised.

Referring to fig. 1, in some embodiments, the barrel pump refrigeration system may further include a fourth valve 27 in series with the expansion valve 13, and the fourth valve 27 may be an on-off valve operable to close the cycle associated with the first evaporator 15.

Referring to fig. 1, the barrel pump refrigeration system can be applied to an energy-saving enthalpy difference laboratory.

The outdoor test chamber 3 is used for simulating the outdoor environment temperature of the air conditioner. In the outdoor test chamber 3, the second heat exchange side of the first evaporator 15 exchanges heat with the air in the outdoor test chamber 3 through the outdoor air handler 5, so as to adjust the air temperature in the outdoor test chamber 3, so that the outdoor test chamber 3 can select from three modes, namely a low-temperature cycle mode, a medium-temperature cycle mode and a high-temperature cycle mode, and realize temperature adjustment in a wide range.

The outdoor temperature and humidity control system comprises an outdoor humidity sensor, an outdoor humidifier and an outdoor temperature sensor which are arranged in an outdoor test room 3.

The outdoor humidifier may be an ultrasonic humidifier which performs humidity adjustment according to the reading of the outdoor humidity sensor. Compared with the traditional electrically heated steam humidifier, the energy-saving enthalpy difference test chamber has the advantages that the additional heat cannot be introduced into the test chamber, and the additional heat is balanced, so that the energy consumption of the test chamber in operation is reduced. Preferably, the ultrasonic humidifier includes an ultrasonic fogging unit and a contactless switching element for controlling the ultrasonic fogging unit, and the contactless switching element controls a control period of the ultrasonic fogging unit to be 5s or less, so that accurate humidity adjustment can be achieved in an energy-saving enthalpy difference test room. The contactless switch element is specifically a solid-state relay, an IGBT module, a silicon controlled module, a diode module, a flat silicon module or a rectifier bridge, and the solid-state relay is adopted in the embodiment.

The second condenser 7 heats air in the outdoor test chamber 3, and has a first end on a refrigerant side connected between the compressor 21 and the differential pressure adjusting valve 31 and a second end on the refrigerant side connected between the first condenser 23 and the differential pressure adjusting valve 31. The first regulating valve 28 is connected to the second condenser, and the heat exchange amount of the second condenser 7 is changed according to the reading of the outdoor side temperature sensor, and the rotation speed of the first pump 12 is set to be changed according to the reading of the outdoor side temperature sensor, so that the circulation flow of the refrigerant is changed, the temperature of the second heat exchange side of the first evaporator 15 is changed, and the air in the outdoor test chamber 3 is cooled.

The indoor test chamber 4 is used for simulating the indoor environment temperature of the air conditioner. In this indoor test booth 4, the second heat exchange side of the second evaporator 26 exchanges heat with the air of the indoor test booth 4 through the indoor air handler 6, so that the air temperature of the indoor test booth 4 is adjusted, and the indoor test booth 4 can realize temperature adjustment in a high temperature cycle mode.

The indoor temperature and humidity control system comprises an indoor humidity sensor, an indoor humidifier and an indoor temperature sensor which are arranged in an indoor test room 4.

The indoor humidifier may be an ultrasonic humidifier that adjusts humidity based on readings from an indoor humidity sensor. Compared with the traditional electrically heated steam humidifier, the energy-saving enthalpy difference test chamber has the advantages that the additional heat cannot be introduced into the test chamber, and the additional heat is balanced, so that the energy consumption of the test chamber in operation is reduced.

The third condenser 8 is used for heating air in the indoor test room 4, and has a first end on a refrigerant side connected between the compressor 21 and the differential pressure adjusting valve 31 and a second end on the refrigerant side connected between the first condenser 23 and the differential pressure adjusting valve 31. The second regulating valve 30 is connected to the third condenser and changes the heat exchange amount of the third heat exchanger 8 according to the reading of the indoor side temperature sensor. The rotational speed of the second pump 25 is set to be changed according to the reading of the indoor side temperature sensor, thereby changing the refrigerant circulation flow rate, and further changing the temperature of the second heat exchange side of the second evaporator 26, thereby cooling the air of the indoor test room 4.

What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made, or combinations of the above-described embodiments can be made, without departing from the spirit of the invention, and all such changes and modifications, including combinations of features of the various embodiments described above, are within the scope of the invention.