CN106642349B

CN106642349B - Intelligent air-cooled constant-temperature and constant-humidity air conditioner and temperature and humidity adjusting method thereof

Info

Publication number: CN106642349B
Application number: CN201611264512.4A
Authority: CN
Inventors: 林创辉; 陈华; 李凡; 梅海波; 李公平; 丁凯; 蒋常艳
Original assignee: Guangdong Shenling Environmental Systems Co Ltd
Current assignee: Guangdong Shenling Environmental Systems Co Ltd
Priority date: 2016-12-30
Filing date: 2016-12-30
Publication date: 2022-05-17
Anticipated expiration: 2036-12-30
Also published as: CN106642349A

Abstract

The utility model relates to an intelligent air-cooled constant temperature and humidity air conditioner, which comprises a compressor, an air-cooled condenser, a reheating condenser, a three-way valve, an expansion valve, an electric heater, a humidifier, a blower and an evaporator, wherein the expansion valve, the evaporator and the compressor are sequentially communicated through a pipeline; the air conditioner also comprises an intelligent control system; the outlet of the compressor is respectively communicated with the inlets of the air-cooled condenser and the reheated condenser; two interfaces of the three-way valve are respectively communicated with outlets of the air-cooled condenser and the reheating condenser through pipelines, and the other interface is communicated with an inlet of the expansion valve through a pipeline; the intelligent control system comprises a control box, and an air inlet temperature sensor, an air inlet humidity sensor, an air outlet temperature sensor and an air outlet humidity sensor which are electrically connected with the control box; the control box is also electrically connected with the compressor, the air feeder, the three-way valve, the electric heater and the humidifier respectively; the air sequentially passes through the evaporator, the reheating condenser, the electric heater, the humidifier and the blower and then enters the room. This patent realizes automatic control according to air inlet humiture and air-out humiture data, and control accuracy is high, can adapt to multiple job requirement better, and degree of automation is high.

Description

Intelligent air-cooled constant-temperature and constant-humidity air conditioner and temperature and humidity adjusting method thereof

Technical Field

The patent relates to the field of air conditioner automation, in particular to an intelligent air-cooled constant-temperature and constant-humidity air conditioner and a temperature and humidity adjusting method thereof.

Background

The existing air-cooled constant-temperature and constant-humidity air conditioner firstly utilizes an evaporator to cool and dehumidify, and then utilizes an electric heater to adjust heat and a humidifier to adjust humidity, so as to provide constant-temperature and constant-humidity air for an air conditioning room with special requirements on temperature and humidity.

Under the working condition of partial load, the cold quantity of the compressor is large, so that the air outlet temperature after the temperature of the evaporator is reduced is greatly lower than the requirement of a set temperature and humidity value, the electric heater is required to realize heat compensation, and the aim of constant temperature and humidity is ensured, the working energy consumption of the electric heater is very large, for example, an air conditioner with the output power of 25kW is taken, besides the electric heater, the rated power (namely, the input power) of the whole machine is only 10kW, but the matched electric heater with the power of 18kW is required, the power of the electric heater is close to twice of the rated power of the air conditioner, and the problems of overheating, overcurrent, burning, even firing and the like easily occur in the high-power electric heating operation, and the operation is unreliable.

The patent application publication with the publication number of CN201621802U provides an air-cooled constant temperature and humidity machine, including indoor set and off-premises station, the indoor set in be equipped with fan, electrode humidifier and evaporimeter in proper order, be connected with the motor on the fan, the outdoor set in be equipped with compressor, air-cooled condenser, axial fan and vapour and liquid separator in proper order, the evaporimeter both ends respectively with air-cooled condenser and vapour and liquid separator intercommunication, evaporimeter and air-cooled condenser between connect gradually drier-filter and three-way valve, drier-filter and three-way valve between be connected with the heat recovery ware.

When the scheme is used for cooling air, the heat recoverer does not act; when the air is heated, the heat recovery device is started, and the heat quantity after the heat exchange of the air-cooled condenser can be recovered by controlling the three-way valve, so that the operation of the electric heating pipe is reduced or even replaced.

Disclosure of Invention

In order to overcome prior art's defect, this patent provides an intelligence air-cooled constant temperature and humidity air conditioner, can realize automatic control according to air inlet humiture and air-out humiture data, and control accuracy is high, can adapt to multiple work requirement better, and degree of automation is high.

For the patent, the technical problem is solved as follows: an intelligent air-cooled constant temperature and humidity air conditioner comprises a compressor, an air-cooled condenser, a reheating condenser, a three-way valve, an expansion valve, an electric heater, a humidifier, a blower and an evaporator, wherein the expansion valve, the evaporator and the compressor are sequentially communicated through a pipeline; the air conditioner also comprises an intelligent control system and a liquid storage device; the outlet of the compressor is respectively communicated with the inlets of the air-cooled condenser and the reheating condenser; two interfaces of the three-way valve are respectively communicated with outlets of the air-cooled condenser and the reheating condenser through pipelines, and the other interface is communicated with an inlet of the liquid storage device through a pipeline; an outlet of the liquid storage device is communicated with the expansion valve; the intelligent control system comprises a control box, and an air inlet temperature sensor, an air inlet humidity sensor, an air outlet temperature sensor and an air outlet humidity sensor which are electrically connected with the control box; the control box is also electrically connected with the compressor, the air feeder, the three-way valve, the electric heater and the humidifier respectively; the air conditioner comprises an air inlet temperature sensor, an air outlet humidity sensor and an air outlet temperature sensor, wherein the air inlet temperature sensor is used for detecting the air inlet temperature of the air conditioner; the air sequentially passes through the evaporator, the reheating condenser, the electric heater, the humidifier and the blower and then enters the room.

The air conditioner control device comprises an air inlet temperature sensor, an air inlet humidity sensor, an air outlet temperature sensor and an air outlet humidity sensor, wherein the air inlet temperature sensor, the air inlet humidity sensor, the air outlet temperature sensor and the air outlet humidity sensor are used for collecting air inlet temperature and humidity data and air outlet temperature and humidity data in the actual operation of the air conditioner and comparing the data with preset air inlet and outlet temperature and humidity data in a control box, and further controlling the opening or stop of a compressor and an air feeder, the opening of a three-way valve, the heating quantity of an electric heater and the humidification quantity of a humidifier to enable the air inlet and outlet to reach certain temperature and humidity requirements; outlets of the air-cooled condenser and the reheating condenser are communicated with the liquid storage device through a three-way valve, the setting height of the evaporator is equal to or higher than the heights of the air-cooled condenser and the reheating condenser, and condensed liquid refrigerant is difficult to flow into the evaporator through a pipeline under the influence of gravitational potential energy, so that the refrigerant is easily accumulated in the air-cooled condenser and the reheating condenser, and the refrigerant can flow into the liquid storage device firstly through the setting of the liquid storage device, so that excessive accumulation of condensed liquid in the air-cooled condenser and the reheating condenser is avoided, the heat exchange areas of the air-cooled condenser and the reheating condenser are enlarged, and the heat exchange efficiency is improved; when the load of the evaporator is increased, more refrigerant is needed, the refrigerant can be supplied through the liquid storage device, on the contrary, when the load is reduced, the redundant refrigerant can be stored in the liquid storage device, the flexible refrigeration is realized, and the adaptability is good; the accumulator can prevent excessive refrigerant from flowing out of the condenser, and avoid liquid impact on the compressor.

Furthermore, a condensing fan is arranged on the air-cooled condenser; the intelligent control system also comprises a condensing fan speed regulator and a pressure sensor arranged on an outlet pipeline of the compressor; the condensing fan speed regulator is respectively and electrically connected with the condensing fan and the control box; the pressure sensor is electrically connected with the control box.

The control box can control the speed regulator of the condensing fan according to the exhaust pressure value detected by the pressure sensor, so that the speed of the condensing fan is regulated, the exhaust pressure value is maintained in a normal range by accelerating or slowing down the condensing efficiency of the air-cooled condenser, the flexibility is high, and the reliability is improved.

Further, the outlet of the reheating condenser is communicated with the liquid storage tank through an electromagnetic valve.

When the air passes through the evaporator and the required heating amount is not large or heating is not needed, the three-way valve closes the interface communicated with the reheating condenser, but at the same time, in order to avoid excessive accumulation of the refrigerant in the reheating condenser and overlarge pressure, the refrigerant can be guided into the liquid accumulator by controlling the opening and closing of the electromagnetic valve, so that the pressure in the reheating condenser is relieved, and the reliability is enhanced.

Further, the air filter is also included; the air sequentially passes through an air filter, an evaporator, a reheating condenser, an electric heater, a humidifier and a blower and then enters a room.

Through setting up impurity such as tiny particulate matter, pollen, bacterium, industrial waste gas and dust in the air cleaner filtered air to prevent that these impurity from causing the harm to air conditioner, can also protect human health.

Further, the humidifier is an electrode humidifier, an electric heating humidifier, a dry steam humidifier, a wet film humidifier or a high-pressure micro-mist humidifier.

The humidifier can be selected according to special requirements on air, and is high in flexibility.

Furthermore, a first pressure switch electrically connected with the control box is arranged on an inlet pipeline of the compressor.

If the pressure of the inlet pipeline is too low, the air conditioner is in failure, the compression ratio of the compressor is increased, the load is increased, and the compressor is damaged. The first pressure switch can be used for detecting whether the pressure in the pipeline is too low or not, and further opening and closing the inlet pipeline to protect the air conditioner.

Furthermore, a second pressure switch electrically connected with the control box is arranged on an outlet pipeline of the compressor.

If the outlet pipeline pressure is too high, the air conditioner is indicated to be out of order, the load of the compressor is increased, and the compressor can be damaged. The second pressure switch can be used for detecting whether the pressure in the pipeline is too high or not, and then opening and closing the outlet pipeline to protect the air conditioner.

A temperature and humidity adjusting method using an intelligent air-cooled constant temperature and humidity air conditioner comprises the following steps:

when the control target is return air temperature and humidity, the adjusting method specifically comprises the following steps:

let T1: actual detected return air temperature, T2: setting the return air temperature, phi 1: actual detection return air humidity, Φ 2: set return air humidity, T3: setting the control precision of return air temperature, phi 3: setting the control precision of the return air humidity;

(1) when T1 is more than or equal to T2+ T3 and phi 1 is more than or equal to phi 2+ phi 3, the compressor is started, the three-way valve closes the interface communicated with the reheating condenser and completely opens the interface communicated with the air-cooled condenser, the electric heater is stopped, and the humidifier is stopped;

(2) when T1 is more than or equal to T2+ T3, and phi 2+ phi 3 is more than or equal to phi 1 and more than or equal to phi 2-phi 3, the compressor is started, the three-way valve closes the interface communicated with the reheating condenser, and completely opens the interface communicated with the air-cooled condenser, the electric heater is stopped, and the humidifier is stopped;

(3) when T1 is more than or equal to T2+ T3 and phi 1 is less than phi 2-phi 3, the compressor is started, the three-way valve closes the interface communicated with the reheating condenser and completely opens the interface communicated with the air-cooled condenser, the electric heater is stopped, and the humidifier is started;

(4) when T2+ T3 is more than or equal to T1 and more than or equal to T2-T3, and phi 1 is more than or equal to phi 2+ phi 3, the compressor is started, the three-way valve expands the interface communicated with the reheating condenser, the interface communicated with the air-cooled condenser is reduced, the electric heater is stopped, and the humidifier is stopped;

(5) when T2+ T3 is more than or equal to T1 and more than or equal to T2-T3, and phi 2+ phi 3 is more than or equal to phi 1 and more than or equal to phi 2-phi 3, the compressor, the three-way valve, the electric heater and the humidifier are all kept in the original working state;

(6) when the T2+ T3 is more than or equal to T1 and more than or equal to T2-T3 and phi 1 is less than phi 2-phi 3, the compressor, the three-way valve and the electric heater are kept in the original working state, and the humidifier is started;

(7) when T1 is more than T2-T3 and phi 1 is more than or equal to phi 2+ phi 3, the compressor is started, the three-way valve expands the interface communicated with the reheating condenser and reduces the interface communicated with the air-cooled condenser until the interface is completely opened or closed, the electric heater is started, and the humidifier is stopped;

(8) when T1 is less than T2-T3, and phi 2+ phi 3 is more than or equal to phi 1 and more than or equal to phi 2-phi 3, the compressor is stopped, the three-way valve keeps the original state, the electric heater is started, and the humidifier keeps the original working state;

(9) when T1 is less than T2-T3 and phi 1 is less than phi 2-phi 3, the compressor is stopped, the three-way valve keeps the original working state, the electric heater is started, and the humidifier is started.

By setting control accuracy values T3 and phi 3, the temperature and humidity are allowed to float within a certain range, and operation faults caused by frequent adjustment of operation of all parts in the air conditioner are avoided; the operation of each part in the air conditioner is accurately adjusted by combining the actually detected temperature and humidity and the set temperature and humidity, and the adaptability is good.

Furthermore, the heating grade of the electric heater is n grades, and m is set as the grade number needing to be started; when T1 < T2-T3/n x m, the electric heater starts m-stage heating; when T2+ T3/n m is more than or equal to T1 is more than or equal to T2-T3/n m, the electric heater keeps the original series heating; when T1 is more than or equal to T2+ T3/n × m, the heating grade of the electric heater is reduced by n-m grades.

The heating grade of the electric heater is calculated and then controlled by combining the control precision value of the air inlet (return air) temperature in the adjusting method, so that the control precision of the temperature is further improved, and the indoor constant temperature requirement is more effectively guaranteed.

The other temperature and humidity adjusting method using the intelligent air-cooled constant temperature and humidity air conditioner comprises the following steps:

when the control target is the air outlet temperature and humidity, the adjusting method specifically comprises the following steps:

let T4: actual detection air outlet temperature, T5: setting the air outlet temperature, phi 4: actual detection air-out humidity, Φ 5: set the outlet air humidity, T6: setting the control precision of the air outlet temperature, phi 6: setting an outlet air humidity control precision value;

(1) when T4 is more than or equal to T5+ T6 and phi 4 is more than or equal to phi 5+ phi 6, the compressor is started, the three-way valve closes the interface communicated with the reheating condenser and completely opens the interface communicated with the air-cooled condenser, the electric heater is stopped, and the humidifier is stopped;

(2) when T4 is more than or equal to T5+ T6, and phi 5+ phi 6 is more than or equal to phi 4 and more than or equal to phi 5-phi 6, the compressor is started, the three-way valve closes the interface communicated with the reheating condenser, and completely opens the interface communicated with the air-cooled condenser, the electric heater is stopped, and the humidifier is stopped;

(3) when T4 is more than or equal to T5+ T6 and phi 4 is less than phi 5-phi 6, the compressor is started, the three-way valve closes the interface communicated with the reheating condenser and completely opens the interface communicated with the air-cooled condenser, the electric heater is stopped, and the humidifier is started;

(4) when T5+ T6 is more than or equal to T4 and more than or equal to T5-T6, and phi 4 is more than or equal to phi 5+ phi 6, the compressor is started, the three-way valve expands the interface communicated with the reheating condenser, the interface communicated with the air-cooled condenser is reduced, the electric heater is stopped, and the humidifier is stopped;

(5) when T5+ T6 is more than or equal to T4 and more than or equal to T5-T6, and phi 5+ phi 6 is more than or equal to phi 4 and more than or equal to phi 5 phi 6, the compressor, the three-way valve, the electric heater and the humidifier are all kept in the original working state;

(6) when T5+ T6 is more than or equal to T4 and more than or equal to T5-T6 and phi 4 is less than phi 5-phi 6, the compressor, the three-way valve and the electric heater are kept in the original working state, and the humidifier is started;

(7) when T4 is less than T5-T6 and phi 4 is more than or equal to phi 5+ phi 6, the compressor is started, the three-way valve expands the interface communicated with the reheat condenser and reduces the interface communicated with the air-cooled condenser until the interface is completely opened or closed, the electric heater is started, and the humidifier is stopped;

(8) when T4 is less than T5-T6, and phi 5+ phi 6 is more than or equal to phi 4 and more than or equal to phi 5-phi 6, the compressor is stopped, the three-way valve keeps the original state, the electric heater is started, and the humidifier keeps the original working state;

(9) when T4 is less than T5-T6 and phi 4 is less than phi 5-phi 6, the compressor is stopped, the three-way valve keeps the original working state, the electric heater is started, and the humidifier is started.

Be different from prior art, the beneficial effect of this patent is:

(1) the control box controls all parts in the air conditioner according to the data collected by the air inlet temperature sensor, the air inlet humidity sensor, the air outlet temperature sensor and the air outlet humidity sensor, and improves the control precision and the automation degree.

(2) The liquid storage tank is arranged to collect condensate accumulated in the air-cooled condenser and the reheating condenser, so that the heat exchange area in the air-cooled condenser and the reheating condenser is enlarged, and the heat exchange efficiency is high.

(3) The outlet of the reheat condenser is communicated with the liquid accumulator through the electromagnetic valve, refrigerant accumulated in the reheat condenser when the reheat condenser stops working can be dredged, the exhaust pressure is reduced, and the reliability is high.

(4) An air filter is added to filter impurities in the air, so that the safe operation and the human health of the air conditioner are protected.

(5) The temperature and humidity adjusting method ensures normal operation of the air conditioner in various states by setting the working modes of all parts under various temperature and humidity conditions, and has high flexibility and good adaptability; and the control precision values T3, phi 3, T6 and phi 6 are added, so that the frequent operation and control of all parts in the air conditioner are avoided to a certain extent, and the reliability is high.

Drawings

Fig. 1 is a schematic structural diagram of the patent.

Fig. 2 is a schematic connection diagram of the intelligent control system of the patent.

Detailed Description

As shown in fig. 1, the intelligent air-cooled constant temperature and humidity air conditioner comprises a compressor 11, an air-cooled condenser 16, a reheating condenser 18, a three-way valve 15, an expansion valve 111, an electric heater 21, a humidifier 22, a blower 23 and an evaporator 112, wherein the expansion valve 111, the evaporator 112 and the compressor 11 are sequentially communicated through a pipeline; the air conditioner further comprises an intelligent control system and a liquid storage device 110; the outlet of the compressor 11 is respectively communicated with the inlets of an air-cooled condenser 16 and a reheating condenser 18; two interfaces of the three-way valve 15 are respectively communicated with outlets of the air-cooled condenser 16 and the reheating condenser 18 through pipelines, and the other interface is communicated with an inlet of the liquid storage device 110 through a pipeline; an outlet of the liquid reservoir 110 is communicated with an expansion valve 111; the intelligent control system comprises a control box 41, and an air inlet temperature sensor 47, an air inlet humidity sensor 48, an air outlet temperature sensor 49 and an air outlet humidity sensor 410 which are electrically connected with the control box 41; the control box 41 is also electrically connected with the compressor 11, the blower 23, the three-way valve 15, the electric heater 21 and the humidifier 22 respectively; the air inlet temperature sensor 47 is used for detecting the air inlet temperature of the air conditioner, the air inlet humidity sensor 48 is used for detecting the air inlet humidity of the air conditioner, the air outlet temperature sensor 49 is used for detecting the air outlet temperature of the air conditioner, and the air outlet humidity sensor 410 is used for detecting the air outlet humidity of the air conditioner; the air sequentially passes through the evaporator 112, the reheat condenser 18, the electric heater 21, the humidifier 22, and the blower 23, and then enters the room.

In the patent, the air inlet temperature and humidity and the air outlet temperature and humidity data in the actual operation of the air conditioner are collected by the air inlet temperature sensor 47, the air inlet humidity sensor 48, the air outlet temperature sensor 49 and the air outlet humidity sensor 410 and are compared with the air inlet and outlet temperature and humidity data preset in the control box 41, so that the compressor 11 and the air blower 23 are controlled to be started or stopped, the opening of the three-way valve 15, the heating amount of the electric heater 21 and the humidification amount of the humidifier 22 are controlled, the air inlet and outlet reaches certain temperature and humidity requirements, the control accuracy is high, the air inlet and outlet temperature and humidity data preset in the control box 41 can be automatically set, various working requirements are met, and the automation degree is high; the outlets of the air-cooled condenser 16 and the reheat condenser 18 are communicated with the liquid accumulator 110 through the three-way valve 15, the setting height of the evaporator 112 is equal to or higher than the heights of the air-cooled condenser 16 and the reheat condenser 18, and the condensed liquid refrigerant is difficult to flow into the evaporator 112 through a pipeline under the influence of gravitational potential energy, so that the refrigerant is easily accumulated in the air-cooled condenser 16 and the reheat condenser 18, and the refrigerant can flow into the liquid accumulator 110 firstly through the setting of the liquid accumulator 110, so that the condensate is prevented from being accumulated too much in the air-cooled condenser 16 and the reheat condenser 18, the heat exchange areas of the air-cooled condenser 16 and the reheat condenser 18 are enlarged, and the heat exchange efficiency is improved; when the load of the evaporator 112 is increased, more refrigerant is needed, and the refrigerant can be supplemented through the liquid storage device 110, on the contrary, when the load is reduced, the redundant refrigerant can be stored in the liquid storage device 110, so that the flexible refrigeration is realized, and the adaptability is good; the accumulator 110 prevents excessive refrigerant from flowing out of the condenser, and avoids liquid slugging of the compressor 11.

The air-cooled condenser 16 is provided with a condensing fan 31; the intelligent control system also comprises a condensing fan speed regulator 43 and a pressure sensor 42 arranged on an outlet pipeline of the compressor 11; the condensing fan speed controller 43 is electrically connected with the condensing fan 31 and the control box 41 respectively; the pressure sensor 42 is electrically connected to the control box 41.

The control box 41 can control the condensing fan speed regulator 43 according to the exhaust pressure value detected by the pressure sensor 42, so as to regulate the speed of the condensing fan 31, in the specific implementation process, the condensing fan speed regulator 43 regulates the speed for starting and stopping, the output of the pressure sensor 42 is the switching value, and when the pressure sensor outputs a low-pressure signal, the condensing fan speed regulator 43 controls the condensing fan 31 to stop; when the pressure sensor outputs a high-pressure signal, the condensing fan speed regulator 43 controls the condensing fan 31 to be opened, so that the exhaust pressure is in the safe range of the compressor, the normal and safe operation of the compressor 11 is ensured, and the reliability is high; the condensing fan speed regulator 43 can also be used for stepless speed regulation, correspondingly, the output of the pressure sensor 42 is analog quantity, and at the moment, the condensing fan speed regulator 43 regulates the exhaust pressure according to the pressure value detected by the pressure sensor 42; when the exhaust pressure is reduced, the opening degree of the condensing fan speed regulator 43 is reduced, and when the exhaust pressure is increased, the opening degree of the condensing fan speed regulator 43 is increased, so that the exhaust pressure is in the safe range of the compressor, the normal and safe operation of the compressor 11 is ensured, and the reliability is improved.

The outlet of the reheat condenser 18 is communicated with the liquid storage tank 110 through a solenoid valve 120.

When the required heating amount is not large or heating is not necessary after the air passes through the evaporator 112, the three-way valve 15 closes the connection port communicating with the reheat condenser 18, but at the same time, in order to prevent the refrigerant in the reheat condenser 18 from accumulating too much and having an excessive pressure, the refrigerant can be introduced into the accumulator 110 by controlling the opening and closing of the solenoid valve 120, so that the pressure in the reheat condenser 18 is reduced, and the reliability is enhanced.

An air filter 24; the air sequentially passes through the air filter 24, the evaporator 112, the reheat condenser 18, the electric heater 21, the humidifier 22, and the blower 23, and then enters the room.

The air filter 24 is arranged to filter impurities such as tiny particulate matters, pollen, bacteria, industrial waste gas and dust in the air so as to prevent the impurities from damaging the air conditioner and protect the human health.

The humidifier 22 is an electrode humidifier, an electric heating humidifier, a dry steam humidifier, a wet film humidifier or a high-pressure micro-mist humidifier.

The humidifier 22 can be selected according to special requirements for air, and is high in flexibility.

A first check valve 114, a first pressure gauge 115 and a first pressure switch 113 electrically connected with the control box 41 are arranged on an inlet pipeline of the compressor 11.

If the pressure in the inlet pipeline is too low, the air conditioner is in failure, the compression ratio of the compressor 11 is increased, the load is increased, and the compressor 11 is damaged. The first pressure switch 113 can be used to detect whether the pressure in the pipeline is too low, and then open and close the inlet pipeline to protect the air conditioner.

And a second check valve 13, a second pressure gauge 12 and a second pressure switch 14 electrically connected with the control box 41 are arranged on an outlet pipeline of the compressor 11.

If the outlet line pressure is too high, indicating a failure of the air conditioner, the compressor 11 is also loaded and the compressor 11 may be damaged. The second pressure switch 14 can be used for detecting whether the pressure in the pipeline is too high, and further opening and closing an outlet pipeline to protect the air conditioner.

(1) when T1 is more than or equal to T2+ T3 and phi 1 is more than or equal to phi 2+ phi 3, the compressor 11 is started, the three-way valve 15 closes the interface communicated with the reheating condenser 18 and completely opens the interface communicated with the air-cooled condenser 16, the electric heater 21 is stopped, and the humidifier 22 is stopped;

(2) when T1 is more than or equal to T2+ T3, and phi 2+ phi 3 is more than or equal to phi 1 and more than or equal to phi 2-phi 3, the compressor 11 is started, the three-way valve 15 closes the interface communicated with the reheating condenser 18, and completely opens the interface communicated with the air-cooled condenser 16, the electric heater 21 is stopped, and the humidifier 22 is stopped;

(3) when T1 is more than or equal to T2+ T3 and phi 1 is less than phi 2-phi 3, the compressor 11 is started, the three-way valve 15 closes the interface communicated with the reheating condenser 18 and completely opens the interface communicated with the air-cooled condenser 16, the electric heater 21 is stopped, and the humidifier 22 is started;

(4) when T2+ T3 is more than or equal to T1 and more than or equal to T2-T3, and phi 1 is more than or equal to phi 2+ phi 3, the compressor 11 is started, the three-way valve 15 expands the interface communicated with the reheating condenser 18, reduces the interface communicated with the air-cooled condenser 16, the electric heater 21 is stopped, and the humidifier 22 is stopped;

(5) when the T2+ T3 is more than or equal to the T1 and more than or equal to the T2-T3, and the phi 2+ phi 3 is more than or equal to the phi 1 and more than or equal to the phi 2-phi 3, the compressor 11, the three-way valve 15, the electric heater 21 and the humidifier 22 are all kept in the original working state;

(6) when the T2+ T3 is more than or equal to the T1 and more than or equal to the T2-T3 and phi 1 is less than phi 2-phi 3, the compressor 11, the three-way valve 15 and the electric heater 21 are kept in the original working state, and the humidifier 22 is started;

(7) when T1 is more than T2-T3 and phi 1 is more than or equal to phi 2+ phi 3, the compressor 11 is started, the three-way valve 15 expands the interface communicated with the reheating condenser 18 and reduces the interface communicated with the air-cooled condenser 16 until the interface is completely opened or closed, the electric heater 21 is started, and the humidifier 22 is stopped;

(8) when T1 is less than T2-T3, and phi 2+ phi 3 is more than or equal to phi 1 and more than or equal to phi 2-phi 3, the compressor 11 is stopped, the three-way valve 15 keeps the original state, the electric heater 21 is started, and the humidifier 22 keeps the original working state;

(9) when T1 is less than T2-T3 and phi 1 is less than phi 2-phi 3, the compressor 11 is stopped, the three-way valve 15 keeps the original working state, the electric heater 21 is started, and the humidifier 22 is started.

In a specific implementation process, the electric heater can be controlled in a multi-stage start-stop mode, the heating grade of the electric heater 21 is n stages in total, and m is set as the stage number to be started; when T1 < T2-T3/n x m, the electric heater 21 starts m-stage heating; when T2+ T3/n m is more than or equal to T1 is more than or equal to T2-T3/n m, the electric heater 21 keeps the original stage heating; when T1 is more than or equal to T2+ T3/n × m, the heating grade of the electric heater 21 is reduced by n-m grade; the electric heater can also be controlled in a stepless regulation mode, and under the condition that the electric heating is started, the electric heater is loaded when T1 is less than T2-T3; when the T2+ T3 is more than or equal to T1 and more than or equal to T2-T3, the electric heater keeps the original stage number; when T1 ≧ T2+ T3, the electric heater unloads.

The heating grade of the electric heater 21 is calculated and then controlled by combining with T3 in the adjusting method, so that the control precision of the temperature is further improved, and the indoor constant temperature requirement is more effectively ensured.

let T4: actual detection air outlet temperature, T5: setting the air outlet temperature, phi 4: actual detection of outlet air humidity, Φ 5: set the outlet air humidity, T6: setting the control precision of the air outlet temperature, phi 6: setting an outlet air humidity control precision value;

(1) when T4 is more than or equal to T5+ T6 and phi 4 is more than or equal to phi 5+ phi 6, the compressor 11 is started, the three-way valve 15 closes the interface communicated with the reheating condenser 18 and completely opens the interface communicated with the air-cooled condenser 16, the electric heater 21 is stopped, and the humidifier 22 is stopped;

(2) when T4 is more than or equal to T5+ T6, and phi 5+ phi 6 is more than or equal to phi 4 and more than or equal to phi 5-phi 6, the compressor 11 is started, the three-way valve 15 closes the interface communicated with the reheating condenser 18, and completely opens the interface communicated with the air-cooled condenser 16, the electric heater 21 is stopped, and the humidifier 22 is stopped;

(3) when T4 is more than or equal to T5+ T6 and phi 4 is more than phi 5-phi 6, the compressor 11 is started, the three-way valve 15 closes the interface communicated with the reheating condenser 18 and completely opens the interface communicated with the air-cooled condenser 16, the electric heater 21 is stopped, and the humidifier 22 is started;

(4) when T5+ T6 is more than or equal to T4 and more than or equal to T5-T6, and phi 4 is more than or equal to phi 5+ phi 6, the compressor 11 is started, the three-way valve 15 expands the interface communicated with the reheating condenser 18, reduces the interface communicated with the air-cooled condenser 16, the electric heater 21 is stopped, and the humidifier 22 is stopped;

(5) when the T5+ T6 is more than or equal to the T4 and more than or equal to the T5-T6, and the phi 5+ phi 6 is more than or equal to the phi 4 and more than or equal to the phi 5 phi 6, the compressor 11, the three-way valve 15, the electric heater 21 and the humidifier 22 are all kept in the original working state;

(6) when the T5+ T6 is more than or equal to the T4 and more than or equal to the T5-T6 and phi 4 is less than phi 5-phi 6, the compressor 11, the three-way valve 15 and the electric heater 21 are kept in the original working state, and the humidifier 22 is started;

(7) when T4 is less than T5-T6 and phi 4 is more than or equal to phi 5+ phi 6, the compressor 11 is started, the three-way valve 15 expands the interface communicated with the reheating condenser 18 and reduces the interface communicated with the air-cooled condenser 16 until the interface is completely opened or closed, the electric heater 21 is started, and the humidifier 22 is stopped;

(8) when T4 is less than T5-T6, and phi 5+ phi 6 is more than or equal to phi 4 and more than or equal to phi 5-phi 6, the compressor 11 is stopped, the three-way valve 15 keeps the original state, the electric heater 21 is started, and the humidifier 22 keeps the original working state;

(9) when T4 is less than T5-T6 and phi 4 is less than phi 5-phi 6, the compressor 11 is stopped, the three-way valve 15 keeps the original working state, the electric heater 21 is started, and the humidifier 22 is started.

In a specific implementation process, the electric heater can be controlled in a multi-stage start-stop mode, the heating grade of the electric heater 21 is n stages in total, and m is set as the stage number to be started; when T4< T5-T6/n x m, the electric heater 21 starts m-stage heating; when T5+ T6/n m is more than or equal to T4 is more than or equal to T5-T6/n m, the electric heater 21 keeps the original stage heating; when T4 is more than or equal to T5+ T6/n × m, the heating grade of the electric heater 21 is reduced by n-m grade; the electric heater can also be controlled in a stepless regulation mode, and under the condition that the electric heating is started, the electric heater is loaded when T4 is less than T5-T6; when the T5+ T6 is more than or equal to T4 and more than or equal to T5-T6, the electric heater keeps the original stage number; when T4 ≧ T5+ T6, the electric heater unloads.

A first one-way valve 19 leading to the three-way valve 15 is provided between the reheat condenser 18 and the communication line of the three-way valve 15.

A second one-way valve 17 leading to the three-way valve 15 is arranged between the air-cooled condenser 16 and the communication pipeline of the three-way valve 15.

The three-way valve 15 is a three-way regulating valve.

As shown in fig. 2, in a specific implementation, the control box 41 includes a display operation system, a sensor data acquisition system and a central controller system; the pressure sensor 42, the air inlet temperature sensor 47, the air inlet humidity sensor 48, the air outlet temperature sensor 49 and the air outlet humidity sensor 410 are all electrically connected with a sensor data acquisition system; the central control system is respectively and electrically connected with the compressor 11, the blower 23, the condensing fan speed regulator 43, the three-way regulating valve 15, the electric heater 21, the humidifier 22, the electromagnetic valve 120, the sensor data acquisition system and the display operation system.

The sensor data acquisition system transmits various acquired data to the central controller system for processing; the display operation system can display the working states of all parts in the air conditioner and various data acquired by the sensors, and can also set the values of the inlet air (or return air) temperature and humidity in the central controller system, namely T2, phi 2, T5 and phi 5; the central controller system can respectively control all parts in the air conditioner according to the collected data, the automation degree is high, and the control precision is guaranteed.

The working principle of the embodiment comprises the following steps:

and (3) a refrigeration process:

s1: the low-temperature low-pressure liquid refrigerant is vaporized into high-temperature low-pressure steam after absorbing the heat of the air in the evaporator 112;

s2: after the compressor 11 sucks the high-temperature low-pressure steam, the high-temperature low-pressure steam is compressed into high-temperature high-pressure steam and is discharged;

s3: the high-temperature and high-pressure steam enters an air-cooled condenser 16 and a reheating condenser 18 to release heat to a cooling medium (air) and is condensed into low-temperature and high-pressure liquid;

s4: the flow ratio of the outlet of the reheating condenser 18 and the outlet of the air-cooled condenser 16 is adjusted through a three-way adjusting valve 15, and low-temperature high-pressure liquid flows into a liquid storage device 110;

s5: the low-temperature high-pressure liquid flows out of the reservoir 110, is throttled by the expansion valve 111, becomes a low-pressure low-temperature liquid, and the process returns to step S1.

In the above step S2, before the compressor 11, it should be checked whether the pressure of the sucked high-temperature low-pressure steam is too low and the pressure of the discharged high-temperature high-pressure steam is too high, and the opening and closing of the outlet pipeline and the inlet pipeline of the compressor 11 are controlled according to the judgment.

The air treatment process comprises the following steps:

s1: the air is filtered through an air filter 24 to form clean air;

s2: the evaporator 112 absorbs the heat of the air and condenses the water vapor in the air, thereby achieving the effects of cooling and dehumidifying;

s3: the reheat condenser 18 releases heat to the air and evaporates water into the air, so that the effects of temperature rise and humidification are achieved;

s4: the air is heated by the electric heater 21;

s5: the air passes through the humidifier 22 to increase the humidity;

s6: the air is pressurized and sent to the room by the blower 23.

Claims

1. An intelligent air-cooled constant temperature and humidity air conditioner comprises a compressor, an air-cooled condenser, a reheating condenser, a three-way valve, an expansion valve, an electric heater, a humidifier, a blower and an evaporator, wherein the expansion valve, the evaporator and the compressor are sequentially communicated through a pipeline in sequence; the outlet of the compressor is respectively communicated with the inlets of the air-cooled condenser and the reheated condenser; two interfaces of the three-way valve are respectively communicated with outlets of the air-cooled condenser and the reheating condenser through pipelines, and the other interface is communicated with an inlet of the liquid storage device through a pipeline; an outlet of the liquid storage device is communicated with the expansion valve; the intelligent control system comprises a control box, and an inlet air temperature sensor, an inlet air humidity sensor, an outlet air temperature sensor and an outlet air humidity sensor which are electrically connected with the control box; the control box is also electrically connected with the compressor, the air feeder, the three-way valve, the electric heater and the humidifier respectively; the air conditioner comprises an air inlet temperature sensor, an air outlet humidity sensor and an air outlet temperature sensor, wherein the air inlet temperature sensor is used for detecting the air inlet temperature of the air conditioner; the air sequentially passes through the evaporator, the reheating condenser, the electric heater, the humidifier and the blower and then enters the room;

the intelligent air-cooled constant temperature and humidity air conditioner is used for realizing the following temperature and humidity adjusting methods:

let Tl: actual detected return air temperature, T2: setting the return air temperature, phi 1: actual detection return air humidity, Φ 2: set return air humidity, T3: setting the control precision of return air temperature, phi 3: setting a control precision value of return air humidity;

(1) when Tl is more than or equal to T2+ T3 and phi 1 is more than or equal to phi 2+ phi 3, the compressor is started, the three-way valve closes the interface communicated with the reheating condenser and completely opens the interface communicated with the air-cooled condenser, the electric heater is stopped, and the humidifier is stopped;

(2) when Tl is more than or equal to T2+ T3, and phi 2+ phi 3 is more than or equal to phi 1 and more than or equal to phi 2-phi 3, the compressor is started, the three-way valve closes the interface communicated with the reheating condenser, the interface communicated with the air-cooled condenser is completely opened, the electric heater is stopped, and the humidifier is stopped;

(3) when Tl is more than or equal to T2+ T3 and phi 1 is less than phi 2-phi 3, the compressor is started, the three-way valve closes the interface communicated with the reheating condenser and completely opens the interface communicated with the air-cooled condenser, the electric heater is stopped, and the humidifier is started;

(4) when T2+ T3 is more than or equal to Tl and more than or equal to T2-T3 and phi 1 is more than or equal to phi 2+ phi 3, the compressor is started, the three-way valve enlarges the interface communicated with the reheating condenser, reduces the interface communicated with the air-cooled condenser, the electric heater is stopped, and the humidifier is stopped;

(5) when T2+ T3 is more than or equal to Tl and more than or equal to T2-T3, and phi 2+ phi 3 is more than or equal to phi 1 and more than or equal to phi 2-phi 3, the compressor, the three-way valve, the electric heater and the humidifier are all kept in the original working state;

(6) when T2+ T3 is more than or equal to Tl and more than or equal to T2-T3 and phi 1 is more than phi 2-phi 3, the compressor, the three-way valve and the electric heater are kept in the original working state, and the humidifier is started;

(7) when Tl is less than T2-T3 and phi 1 is more than or equal to phi 2 and phi 3, the compressor is started, the three-way valve enlarges the interface communicated with the reheating condenser and reduces the interface communicated with the air-cooled condenser until the interface is completely started or closed, the electric heater is started, and the humidifier is stopped;

(8) when Tl is less than T2-T3 and phi 2+ phi 3 is more than or equal to phi 1 and more than or equal to phi 2-phi 3, the compressor is stopped, the three-way valve keeps the original state, the electric heater is started, and the humidifier keeps the original working state;

(9) when Tl is less than T2-T3 and phi 1 is less than phi 2-phi 3, the compressor is stopped, the three-way valve keeps the original working state, the electric heater is started, and the humidifier is started;

let T4: actual detection air outlet temperature, T5: setting the air outlet temperature, phi 4: actual detection air-out humidity, Φ 4: set the outlet air humidity, T6: setting the control precision of the air outlet temperature, wherein phi 6: setting an outlet air humidity control precision value;

(3) when T4 is more than or equal to T5+ T6 and phi 4 is more than phi 5-phi 6, the compressor is started, the three-way valve closes the interface communicated with the reheating condenser and completely opens the interface communicated with the air-cooled condenser, the electric heater is stopped, and the humidifier is started;

(4) when T5+ T6 is more than or equal to T4 and more than or equal to T5-T6, and phi 4 is more than or equal to phi 5+ phi 6, the compressor is started, the three-way valve enlarges the interface communicated with the reheating condenser, reduces the interface communicated with the air-cooled condenser, the electric heater is stopped, and the humidifier is stopped;

(5) when T5+ T6 is more than or equal to T4 and more than or equal to T5-T6, and phi 5+ phi 6 is more than or equal to phi 4 and more than or equal to phi 5-phi 6, the compressor, the three-way valve, the electric heater and the humidifier are all kept in the original working state;

(6) when T5+ T6 is more than or equal to T4 and more than or equal to T5-T6 and phi 4 is more than phi 5-phi 6, the compressor, the three-way valve and the electric heater are kept in the original working state, and the humidifier is started;

(7) when T4 is less than T5-T6 and phi 4 is more than or equal to phi 5+ phi 6, the compressor is started, the three-way valve enlarges the interface communicated with the reheating condenser and reduces the interface communicated with the air-cooled condenser until the interface is completely started or closed, the electric heater is started, and the humidifier is stopped;

(9) when T4 is more than T5-T6 and phi 4 is less than phi 5-phi 6, the compressor is stopped, the three-way valve keeps the original working state, the electric heater is started, and the humidifier is started.

2. An intelligent air-cooled constant temperature and humidity air conditioner according to claim 1, wherein the air-cooled condenser is provided with a condensing fan; the intelligent control system also comprises a condensing fan speed regulator and a pressure sensor arranged on an outlet pipeline of the compressor; the condensing fan speed regulator is respectively and electrically connected with the condensing fan and the control box; the pressure sensor is electrically connected with the control box.

3. An intelligent air-cooled constant temperature and humidity air conditioner according to claim 1, wherein the outlet of the reheat condenser is communicated with the liquid storage tank through an electromagnetic valve.

4. The intelligent air-cooled constant temperature and humidity air conditioner according to claim 1, further comprising an air filter; the air sequentially passes through an air filter, an evaporator, a reheating condenser, an electric heater, a humidifier and a blower and then enters a room.

5. An intelligent air-cooled constant temperature and humidity air conditioner according to any one of claims 1 to 4, wherein the humidifier is an electrode humidifier, an electric heating humidifier, a dry steam humidifier, a wet film humidifier or a high pressure micro mist humidifier.

6. An intelligent air-cooled constant temperature and humidity air conditioner according to any one of claims 1 to 4, wherein a first pressure switch electrically connected to the control box is provided on the inlet pipeline of the compressor.

7. An intelligent air-cooled constant temperature and humidity air conditioner according to any one of claims 1 to 4, wherein a second pressure switch electrically connected to the control box is provided on an outlet pipeline of the compressor.

8. A temperature and humidity adjusting method using the intelligent air-cooled constant temperature and humidity air conditioner according to claim 1, characterized in that:

let Tl: actual detected return air temperature, T2: setting the return air temperature, phi 1: actual detection return air humidity, Φ 2: set return air humidity, T3: setting the control precision of return air temperature, phi 3: setting a control precision value of the return air humidity;

(9) when Tl is less than T2-T3 and phi 1 is less than phi 2-phi 3, the compressor is stopped, the three-way valve keeps the original working state, the electric heater is started, and the humidifier is started.

9. A temperature and humidity adjusting method using the intelligent air-cooled constant temperature and humidity air conditioner according to claim 1, characterized in that: