CN107023962A

CN107023962A - A kind of air conditioner and control method

Info

Publication number: CN107023962A
Application number: CN201710238994.4A
Authority: CN
Inventors: 罗荣邦
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Haier Smart Home Co Ltd; Qingdao Haier Jiaozhou Air Conditioner Co Ltd
Priority date: 2017-04-13
Filing date: 2017-04-13
Publication date: 2017-08-08
Anticipated expiration: 2037-04-13
Also published as: CN107023962B

Abstract

The invention discloses a kind of air conditioner and control method, belong to air-conditioning technical field.Air conditioner has variable conpacitance compressor, and the operational mode of variable conpacitance compressor includes Bi-level mode and twin-tub pattern, and the indoor set of air conditioner at least includes two heat exchange units；Control method includes：Obtain indoor temperature, indoor humidity, target cryogenic temperature and target indoor humidity；Variable conpacitance compressor is controlled with twin-tub mode operation；Control the periodic alternate run in the following manner of two heat exchange units：First method, the first heat exchange unit is run in a chiller mode, and the second heat exchange unit is run with air supply pattern；Second method, two heat exchange units are run in a chiller mode.Control method of the present invention can be under the higher situation of Summer Indoor temperature, the variable conpacitance compressor of air conditioner is controlled with twin-tub mode operation, so that the refrigerant that variable conpacitance compressor is exported can meet coolant quantity demand when air conditioner freezes, it is ensured that air conditioner can be run with optimal energy efficiency state.

Description

A kind of air conditioner and control method

Technical field

The present invention relates to air-conditioning technical field, more particularly to a kind of air conditioner and control method.

Background technology

Conventional air conditioner is the squeeze operation for carrying out increasing temperature and pressure to refrigerant using mechanical commprssor, such as piston mostly Compressor, helical-lobe compressor, centrifugal compressor, the type such as linear compressor, can according to the compression cylinder quantity inside compressor To be divided into single cylinder compressor, duplex cylinder compressor and multicylinder compressor, wherein, for cylinder body quantity no less than one twin-tub and Multicylinder compressor, its compression process is, according to the order of connection between multiple cylinder bodies, to carry out multi-stage compression operation to refrigerant successively. Air conditioner in normal operation, compressor often can only according to fixed single compressed ordered mode to refrigerant increasing temperature and pressure, but It is due to the influence of many factors such as outdoor circumstance temperature, indoor temperature so that under different working conditions, air conditioner is to its compressor Running frequency, compression efficiency etc. propose different requirements, therefore Conventional press is often deposited with its single compressed mode operation In useless power consumption, it is impossible to the optimal efficiency running status of air conditioner.

The content of the invention

The invention provides a kind of air conditioner and control method, it is intended to lifts the work efficiency of air conditioner.In order to disclosing Embodiment some aspect have a basic understanding, shown below is simple summary.The summarized section is not generally to comment State, nor to determine key/critical component or describe the protection domain of these embodiments.Its sole purpose is with simple Form some concepts are presented, in this, as the preamble of following detailed description.

According to the first aspect of the invention there is provided a kind of control method of air conditioner, control method includes：Obtain room Interior temperature, indoor humidity, and user setting target cryogenic temperature, target indoor humidity；Temperature is more than preset indoors During inside temperature thresholds, air conditioner is controlled with twin-tub mode operation, wherein, twin-tub pattern includes the variable conpacitance compressor of air conditioner Two independent compression refrigerants of compression cylinder operational mode；The first temperature approach of indoor temperature and target cryogenic temperature is determined, Determine the first humidity differences of indoor humidity and target indoor humidity；It is more than preset temperature difference threshold, and the in the first temperature approach When one humidity differences are not more than preset psychrometric difference threshold value, the periodic alternate run in the following manner of two heat exchange units is controlled： First method, the first heat exchange unit is run in a chiller mode, and the second heat exchange unit is run with air supply pattern；Second method, two Heat exchange unit is run in a chiller mode.

Further, control method also includes：Determine indoor temperature and the second temperature approach of inside temperature thresholds；Determine room Second humidity differences of interior humidity and preset indoor humidity threshold value；According to the second temperature approach and the second humidity differences, regulation becomes The working frequency of capacity compressor.

Further, according to the second temperature approach and the second humidity differences, the working frequency of variable conpacitance compressor, process are adjusted Including：In 0≤Δ T₂＜ T₂, and 0≤Δ RH₂＜ RH₂When, control variable conpacitance compressor is with the first working frequency H₁Operation；In T₂ ≤ΔT₂, and RH₂≤ΔRH₂When, control variable conpacitance compressor is with the second working frequency H₂Operation；Wherein, Δ T₂For second temperature difference Value, Δ RH₂For the second humidity differences, T₂For the first preset temperature threshold, RH₂For the first preset humidity threshold, H₁＜ H₂。

Further, control method also includes：Determine the 3rd temperature approach between the first temperature approach and temperature difference threshold；It is determined that The 3rd humidity differences between first humidity differences and psychrometric difference threshold value；According to the 3rd temperature approach and the 3rd humidity differences, regulation The rotating speed of the driving blower fan of each heat exchange unit.

Further, according to the 3rd temperature approach and the 3rd humidity differences, turn of the driving blower fan of each heat exchange unit is adjusted Speed, process includes：In 0≤Δ T₃＜ T₃, and 0≤Δ RH₃＜ RH₃When, the driving wind of the heat exchange unit of control operation refrigeration mode Machine is with the first rotating speed R₁₁Operation；In T₃≤ΔT₃, and RH₃≤ΔRH₃When, the driving of the heat exchange unit of control operation refrigeration mode Blower fan is with the second rotating speed R₁₂Operation；Wherein, Δ T₃For the 3rd temperature approach, T₃For preset second temperature threshold value, Δ RH₃For the 3rd Humidity differences, RH₃For the second preset humidity threshold, R₁₁＜ R₁₂。

According to the second aspect of the invention, a kind of controller of air conditioner is additionally provided, air conditioner has varying capacity pressure Contracting machine and controller, the operational mode of variable conpacitance compressor include Bi-level mode and twin-tub pattern, and the indoor set of air conditioner is at least Including two heat exchange units, each heat exchange unit has single heat exchanger；Air conditioner also includes being used to detect indoor temperature Temperature sensor and the humidity sensor for detecting indoor humidity；Controller is used for：Indoor temperature, indoor humidity are obtained, with And target cryogenic temperature, the target indoor humidity of user's setting；The first temperature approach of indoor temperature and target cryogenic temperature is determined, Determine the first humidity differences of indoor humidity and target indoor humidity；When temperature is more than preset inside temperature thresholds indoors, The variable conpacitance compressor of air conditioner is controlled with twin-tub mode operation, wherein, twin-tub pattern includes the variable conpacitance compressor of air conditioner Two independent compression refrigerants of compression cylinder operational mode；And it is more than preset temperature difference threshold, and the in the first temperature approach When one humidity differences are not more than preset psychrometric difference threshold value, the periodic alternate run in the following manner of two heat exchange units is controlled： First method, the first heat exchange unit is run in a chiller mode, and the second heat exchange unit is run with air supply pattern；Second method, two Heat exchange unit is run in a chiller mode.

Further, air conditioner includes outdoor unit, and outdoor unit includes variable conpacitance compressor component, outdoor heat exchanger, transfiguration Capacity compressor component includes variable conpacitance compressor and the first four-way valve；Outdoor heat exchanger includes the first refrigerant mouthful and the second refrigerant Mouthful；Variable conpacitance compressor includes the first compression cylinder and the second compression cylinder, and the first compression cylinder has the first air inlet and the first outlet Mouthful, the second compression cylinder has the second air inlet and the second gas outlet, wherein, the second gas outlet and the varying capacity pressure of the second compression cylinder The exhaust outlet of contracting machine is connected；First four-way valve include valve body, the valve block for the valve pocket being arranged in valve body, and first interface, Second interface, the 3rd interface and the 4th interface, valve block have connection first interface and second interface, connect the 3rd interface and the 4th The first valve position of interface, connection second interface and the 3rd interface, the second valve position for blocking first interface and the 4th interface；Wherein, Second interface is connected with the second air inlet, and the 3rd interface is connected with the first gas outlet, and the 4th interface is connected with exhaust outlet； The variable conpacitance compressor of air conditioner is controlled with twin-tub mode operation, including：The valve block of the first four-way valve is controlled to switch to the first valve Position.

Further, outdoor unit also includes the second four-way valve and the 3rd four-way valve, and the first gas-liquid separator and second Gas-liquid separator；Indoor set includes the first heat exchange unit and the second heat exchange unit, wherein, it is indoor that the first heat exchange unit includes first Heat exchanger, the second heat exchange unit includes the second indoor heat exchanger；First indoor heat exchanger passes through the second four-way valve and outdoor heat exchange Device, the first gas-liquid separator, variable conpacitance compressor are connected, and constitute the first refrigerant circulation stream；Wherein, the first indoor heat exchanger Including the first cold coal mouthful and the second cold coal mouthful；First gas-liquid separator includes the first import and first outlet；Second four-way valve bag Include the valve block of valve body, the valve pocket being arranged in valve body, and first interface, second interface, the 3rd interface and the 4th interface, valve block With connection first interface and second interface, connect the first valve position of the 3rd interface and the 4th interface, connect second interface and the The second valve position of three interfaces, connection first interface and the 4th interface；The first interface of second four-way valve and the first indoor heat exchanger The first cold coal mouthful connection, second interface is connected with the first import of the first gas-liquid separator, the 3rd interface and outdoor heat exchanger The first cold coal mouthful connection, the exhaust outlet of the 4th interface and variable conpacitance compressor connects；Second cold coal of the first indoor heat exchanger Mouth is connected with the second cold coal mouthful of outdoor heat exchanger；The first outlet of first gas-liquid separator and the first interface of the first four-way valve It is connected.

Further, the second indoor heat exchanger passes through the 3rd four-way valve and outdoor heat exchanger, the second gas-liquid separator, transfiguration Capacity compressor is connected, and constitutes the second refrigerant circulation stream；Wherein, the second indoor heat exchanger is cold including the first cold coal mouthful and second Coal mouthful；Second gas-liquid separator includes the second import and second outlet；3rd four-way valve includes valve body, the valve being arranged in valve body The valve block of chamber, and first interface, second interface, the 3rd interface and the 4th interface, valve block have connection first interface and second The first valve position of interface, the 3rd interface of connection and the 4th interface, connection second interface and the 3rd interface, connects first interface and the The second valve position of four interfaces；The first interface of 3rd four-way valve is connected with the first of the second indoor heat exchanger the cold coal mouthful, and second connects Mouth is connected with the second import of the second gas-liquid separator, the first cold coal mouthful, the second cold coal mouthful of the 3rd interface and outdoor heat exchanger Connect respectively, the exhaust outlet connection of the 4th interface and variable conpacitance compressor；Second cold coal mouthful of the second indoor heat exchanger and outdoor Second cold coal mouthful connection of heat exchanger；The second outlet of second gas-liquid separator is connected with the first air inlet of the first compression cylinder Connect；The first electromagnetism is provided with refrigerant pipeline between 3rd interface of the 3rd four-way valve and the first of outdoor heat exchanger the cold coal mouthful The second electromagnetism is provided with valve, the refrigerant pipeline between the 3rd interface of the 3rd four-way valve and the second of outdoor heat exchanger the cold coal mouthful Valve；The is provided with refrigerant pipeline between the second cold coal mouthful of second indoor heat exchanger and the second of outdoor heat exchanger the cold coal mouthful Three magnetic valves；Set on refrigerant pipeline between second cold coal mouthful of the second cold coal mouthful and outdoor heat exchanger of the first indoor heat exchanger It is equipped with the refrigerant pipe between first throttle valve, the second cold coal mouthful of the second cold coal mouthful and outdoor heat exchanger of the second indoor heat exchanger Second throttle is provided with road.

Control method of the present invention under the higher situation of Summer Indoor temperature, can control the variable conpacitance compressor of air conditioner With twin-tub mode operation, and two heat exchange units are controlled to be freezed and blown according to temperature difference and psychrometric difference, so that becoming The refrigerant that capacity compressor is exported can meet coolant quantity demand during air conditioner refrigeration, it is ensured that air conditioner can be with optimal Energy efficiency state is run.

It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary and explanatory, not Can the limitation present invention.

Brief description of the drawings

Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows the implementation for meeting the present invention Example, and for explaining principle of the invention together with specification.

Fig. 1 is the flow chart of the control method of the present invention according to shown by an exemplary embodiment；

Fig. 2 is the structural representation of the air conditioner of the present invention according to shown by an exemplary embodiment.

Wherein, 1, outdoor unit；

11st, outdoor heat exchanger；111st, the first cold coal mouthful；112nd, the second cold coal mouthful；

12nd, variable conpacitance compressor；121st, the first compression cylinder；122nd, the second compression cylinder；123rd, first port；124th, the second end Mouthful；125th, the 3rd port；126th, the 4th port；127th, exhaust outlet；

1211st, the first air inlet；1212nd, the first gas outlet；

1221st, the second air inlet；1222nd, the second gas outlet；

Because the first four-way valve, the second four-way valve and the 3rd four-way valve may be contained within multiple interfaces, therefore the present invention is not to Interface with multiple same names of four-way valve is distinguish between using different references, specific as follows：

13rd, the first four-way valve；131st, first interface；132nd, second interface；133rd, the 3rd interface；134th, the 4th interface；

14th, the second four-way valve：141st, first interface；142nd, second interface；143rd, the 3rd interface；144th, the 4th interface；

15th, the 3rd four-way valve；151st, first interface；152nd, second interface；153rd, the 3rd interface；154th, the 4th interface；

16th, the first gas-liquid separator；161st, the first import；162nd, first outlet；

17th, the second gas-liquid separator；171st, the second import；162nd, second outlet；

181st, the first refrigerant branch road；182nd, the second refrigerant branch road；

191st, the first magnetic valve；192nd, the second magnetic valve；193rd, the 3rd magnetic valve；

2nd, indoor set；

Because outdoor heat exchanger, the first indoor heat exchanger and the second indoor heat exchanger may be contained within multiple cold coals mouthful, therefore The present invention is distinguish between to the refrigerant mouthful of multiple same names of various heat exchange device using different references, specific as follows：

21st, the first indoor heat exchanger；211st, the first refrigerant mouthful；212nd, the second cold coal mouthful；

22nd, the second indoor heat exchanger；221st, the first cold coal mouthful；222nd, the second refrigerant mouthful；

23rd, first throttle valve；24th, second throttle.

Embodiment

The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to Put into practice them.Other embodiments can include structure, logic, electric, process and other changes.Embodiment Only represent possible change.Unless explicitly requested, otherwise single components and functionality is optional, and the order operated can be with Change.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This hair The scope of bright embodiment includes the gamut of claims, and claims is all obtainable equivalent Thing.Herein, each embodiment individually or can be represented generally with term " invention ", and it is convenient that this is used for the purpose of, And if in fact disclosing the invention more than one, the scope for being not meant to automatically limit the application is any single invention Or inventive concept.Herein, such as first and second or the like relational terms be used only for by an entity or operation with Another entity or operation make a distinction, without requiring or implying between these entities or operation there is any actual relation Or order.Moreover, term " comprising ", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that So that process, method or equipment including a series of key elements not only include those key elements, but also including being not expressly set out Other key elements, or also include for this process, method or the intrinsic key element of equipment.In the feelings of not more limitations Under condition, the key element limited by sentence "including a ...", it is not excluded that in the process including the key element, method or equipment In also there is other identical element.Each embodiment herein is described by the way of progressive, and each embodiment is stressed Be all between difference with other embodiment, each embodiment identical similar portion mutually referring to.For implementing For example disclosed method, product etc., because it is corresponding with method part disclosed in embodiment, so the comparison of description is simple Single, related part is referring to method part illustration.

As shown in figure 1, the invention discloses a kind of control method of air conditioner, air-conditioning is controlled available under summer condition Device is freezed and pushing wind manipulation to indoor environment, is specifically included the step of control method：S101, acquisition indoor temperature, interior Humidity, and user setting target cryogenic temperature, target indoor humidity；S102, indoors temperature are more than preset Indoor Temperature When spending threshold value, air conditioner is controlled with twin-tub mode operation, wherein, twin-tub pattern includes two of the variable conpacitance compressor of air conditioner The operational mode of the independent compression refrigerant of compression cylinder；S103, indoor temperature and the first temperature approach of target cryogenic temperature are determined, really Determine the first humidity differences of indoor humidity and target indoor humidity；S104, the first temperature approach be more than preset temperature difference threshold, and When first humidity differences are not more than preset psychrometric difference threshold value, two periodic alternate runs of heat exchange unit of control are with lower section Formula：First method, the first heat exchange unit is run in a chiller mode, and the second heat exchange unit is run with air supply pattern；Second method, two Individual heat exchange unit is run in a chiller mode.Two heat exchange units of air conditioner by alternate run with above-mentioned two ways, can To accelerate the refrigeration cool-down to indoor environment, while can also natural wind simulating effect, the comfort level of raising user.

In above-mentioned control method, air conditioner is compressed using variable conpacitance compressor to refrigerant, in embodiment, varying capacity pressure Contracting machine is two-cylinder type compressor, and its operational mode includes Bi-level mode and twin-tub pattern.Wherein, Bi-level mode is that refrigerant flows successively Two compression cylinders through compressor are compressed, it is adaptable to the operating mode that the temperature difference is small, psychrometric difference is small；Twin-tub pattern is distinguished for refrigerant Two compression cylinders for flowing through compressor are compressed, it is adaptable to which the temperature difference is big, the operating mode of high humidity.

The indoor set of air conditioner of the present invention at least includes two heat exchange units, and each heat exchange unit has single heat exchanger With driving blower fan, it can be respectively used to perform above-mentioned refrigerating operation, so that the refrigerating operaton of two heat exchange units is not interfere with each other.

Acquired indoor temperature can be obtained by the temperature sensor detection being arranged in indoor environment in step S101, Indoor humidity can be obtained by the humidity sensor detection being arranged in indoor environment.In one embodiment, indoor temperature is temperature The real-time indoor temperature detected by sensor is spent, indoor humidity is the real-time indoor humidity detected by humidity sensor. In another embodiment, in order to reduce the interference effect produced by transient temperature and humidity change, indoor temperature can also be at certain Average indoor temperature in one setting duration, for example, temperature sensor detection detected 5 indoor environment temperatures in 5 minutes, often Secondary assay intervals 1 minute, the then Indoor Temperature that the average of this 5 indoor environment temperatures can be applied as control method of the present invention Degree；Similarly, indoor humidity can also be detected in the manner described above, the indoor humidity that its average is applied as control method.

Acquired target cryogenic temperature and target indoor humidity are that user passes through remote control or air-conditioning in step S101 Cryogenic temperature set by display control panel and humidity on device body.

In one embodiment of this invention, inside temperature thresholds preset in step S102 and indoor humidity threshold value are used for Judge the desired coolant quantity needed of air conditioner operation, when temperature is more than inside temperature thresholds indoors, then air conditioner needs pair Indoor environment is freezed, and the coolant quantity needed for air conditioner operation is more, therefore the variable conpacitance compressor of air conditioner need to be with output The mode operation of more refrigerants.

Therefore, temperature is more than in the case of preset inside temperature thresholds indoors by step S102, and control varying capacity compresses Machine is compressed to refrigerant respectively with twin-tub mode operation, two compression cylinders, can increase output to air-conditioner coolant cyclic system Coolant quantity in system, allow coolant quantity meet air conditioner operation the need for, improve air conditioner operating efficiency.

In embodiment, the first temperature approach determined by step S103 is indoor temperature and the temperature difference of target cryogenic temperature Value, for example, indoor environment temperature is 32 DEG C, the target cryogenic temperature set by user is 27 DEG C, then the first temperature approach is for both Difference, i.e., 5 DEG C, for the ease of the comparison in subsequent control step to temperature approach, the first temperature difference that this case is calculated typically takes The absolute value of indoor temperature and target cryogenic temperature so that the first temperature approach be on the occasion of.Similarly, the first humidity differences can also join Calculate and determine according to aforesaid way, therefore not to repeat here.

In embodiment, different operational modes can be enabled to two heat exchange units according to current working for ease of air conditioner, In step S104, it is more than preset temperature difference threshold in the first temperature approach, and the first humidity differences are not more than preset psychrometric difference threshold During value, indoor environment needs to carry out refrigeration cool-down operation, heat exchange unit need to be controlled to run refrigeration mode, the invention discloses two kinds Mode：First method, the first heat exchange unit is run in a chiller mode, and the second heat exchange unit is run with air supply pattern；Second method, Two heat exchange units are run in a chiller mode.Cycle alternate run of the two ways to set, wherein, in first method, Because air conditioner includes two heat exchange units, therefore any heat exchange unit operation refrigeration mode, another heat exchange unit can be selected Air supply pattern is run, it is necessary to which explanation, air supply pattern refers to that refrigerant is not passed through the heat exchanger, heat exchange unit only runs its driving Blower fan, to drive circulating for room air., can also be by controlling the flow valve in various heat exchange unit during this Aperture, with adjust input two heat exchange units in coolant quantity, so as to meet the refrigerant of two heat exchange units under two ways Amount demand.

Above-mentioned temperature difference threshold is used to judge the temperature difference degree between indoor temperature and target cryogenic temperature, indoor temperature and mesh The first temperature approach that mark cryogenic temperature calculating is obtained is bigger, illustrates that the temperature difference between indoor temperature and target cryogenic temperature is got over Greatly, the air conditioner temperature difference to be regulated is bigger, then needs to control at least one heat exchange unit operation refrigeration mode of air conditioner, with right Indoor environment carries out refrigeration cool-down operation；Meanwhile, the first temperature approach is bigger, the refrigerant needed for air conditioner reduction indoor environment temperature Amount is also more, therefore variable conpacitance compressor can be adapted with twin-tub mode operation with current working.Similarly, psychrometric difference threshold value Can with and be used to judge the psychrometric difference degree between indoor humidity and target indoor humidity, and then control when psychrometric difference is larger empty At least one heat exchange unit operation dehumidification mode of device is adjusted, to carry out dehumidification operation to indoor environment.Air conditioner in embodiment Including two heat exchange units, because psychrometric difference is not less than preset psychrometric difference threshold value, indoor environment can not be dehumidified, because This is two heat exchange unit operation refrigeration modes of control in step S104, to carry out refrigerating operation to indoor environment simultaneously, or Person controls one of heat exchange unit operation refrigeration mode, another heat exchange unit operation air supply pattern, and two ways is to set Cycle alternate run, so that while indoor refrigerating efficiency is not influenceed, the effect of funnel draught can also be realized.

In one embodiment of the invention, the step of control method also includes：Determine indoor temperature and indoor temperature threshold Second temperature approach of value；Determine the second humidity differences of indoor humidity and indoor humidity threshold value；According to the second temperature approach and second Humidity differences, adjust the working frequency of variable conpacitance compressor.Foregoing inside temperature thresholds and indoor humidity threshold value are mainly used in Judge the coolant quantity needed desired by air conditioner operation, and then judge the operational mode of variable conpacitance compressor, influence air conditioner is cold Matchmaker's output quantity not only includes the operational mode of variable conpacitance compressor, includes the working frequency of variable conpacitance compressor, therefore this Invention is wet by judge the second temperature approach, indoor humidity and indoor humidity threshold value of indoor temperature and inside temperature thresholds second Difference is spent, the running frequency of compressor can be adjusted；Second temperature approach is bigger, the second humidity differences are bigger, then air conditioner is run Required coolant quantity is bigger, thus the working frequency of increase compressor can effectively improve refrigerant delivery efficiency.

In specific embodiment, according to the second temperature approach and the second humidity differences, the working frequency of variable conpacitance compressor is adjusted, Process includes：

In 0≤Δ T₂＜ T₂, and 0≤Δ RH₂＜ RH₂When, control variable conpacitance compressor is with the first working frequency H₁Operation；

In T₂≤ΔT₂, and RH₂≤ΔRH₂When, control variable conpacitance compressor is with the second working frequency H₂Operation；

Wherein, Δ T₂For the second temperature approach, Δ RH₂For the second humidity differences, T₂For the first preset temperature threshold, value Scope be 3 DEG C~5 DEG C, RH₂For the first preset humidity threshold, span is 5%~10%, H₁＜ H₂。

In one embodiment of the invention, the step of control method also includes：Determine the first temperature approach and temperature difference threshold Between the 3rd temperature approach；Determine the 3rd humidity differences between the first humidity differences and psychrometric difference threshold value；According to the 3rd temperature difference Value and the 3rd humidity differences, adjust the rotating speed of the driving blower fan of each heat exchange unit.Foregoing temperature difference threshold is mainly used in judging Temperature difference degree, psychrometric difference threshold value between indoor temperature and target cryogenic temperature are mainly used in judging in indoor humidity and target chamber Psychrometric difference degree between humidity, then can be by controlling the driving of heat exchange unit the temperature difference is larger and during larger psychrometric difference The rotating speed of blower fan, regulation flows through the air quantity of various heat exchange unit, and then can adjust the refrigerating efficiency or dehumidifying effect of heat exchange unit Rate.

In specific embodiment, according to the 3rd temperature approach and the 3rd humidity differences, the driving blower fan of each heat exchange unit is adjusted Rotating speed, process includes：

In 0≤Δ T₃＜ T₃, and 0≤Δ RH₃＜ RH₃When, control operation refrigeration mode heat exchange unit driving blower fan with First rotating speed R₁₁Operation；

In T₃≤ΔT₃, and RH₃≤ΔRH₃When, the driving blower fan of the heat exchange unit of control operation refrigeration mode is with second turn Fast R₁₂Operation；

Wherein, Δ T₃For the 3rd temperature approach, T₃For preset second temperature threshold value, Δ RH₃For the 3rd humidity differences, RH₃For The second preset humidity threshold, R₁₁＜ R₁₂；I.e. the 3rd temperature approach and the 3rd humidity differences are bigger, corresponding operation refrigeration mode Heat exchange unit driving blower fan rotating speed it is higher.

In the other embodiment of the present invention, also disclose and be in summer condition and winter condition operation in air-conditioning When, according to the operational mode of the state modulator variable conpacitance compressor such as indoor temperature, indoor humidity, outdoor temperature and outside humidity with And a variety of method flows of the mode of operation of two heat exchange units, it is described with reference to different embodiments：

In the first embodiment of the present invention, in summer condition, become according to state modulators such as indoor temperature and indoor humidities The mode of operation of the operational mode of capacity compressor and two heat exchange units, its idiographic flow includes：Obtain indoor temperature, room Interior humidity, and user setting target cryogenic temperature, target indoor humidity；Temperature is more than preset indoor temperature threshold indoors Value, and indoor humidity be more than preset indoor humidity threshold value when, control variable conpacitance compressor with twin-tub mode operation；It is determined that indoor Temperature and the first temperature approach of target cryogenic temperature, determine the first humidity differences of indoor humidity and target indoor humidity； When one temperature approach is more than preset psychrometric difference threshold value more than preset temperature difference threshold, and the first humidity differences, control first exchanges heat Unit is run in a chiller mode, and another heat exchange unit is run with dehumidification mode.Above-mentioned control method can control two of air-conditioning Heat exchange unit is freezed and dehumidified to indoor environment simultaneously, it is ensured that indoor temperature and the stabilization of damp condition.

In the second embodiment of the present invention, in summer condition, become according to state modulators such as indoor temperature and indoor humidities The mode of operation of the operational mode of capacity compressor and two heat exchange units, its idiographic flow includes：Obtain indoor temperature, room Interior humidity, and user setting target cryogenic temperature, target indoor humidity；Temperature is more than preset indoor temperature threshold indoors During value, control variable conpacitance compressor is with twin-tub mode operation；The first temperature approach of indoor temperature and target refrigeration humidity is determined, really Determine the first humidity differences of indoor humidity and target indoor humidity；It is more than preset temperature difference threshold, and first in the first temperature approach When humidity differences are not more than preset psychrometric difference threshold value, two heat exchange units of control are run in a chiller mode.Above-mentioned controlling party Method can control two heat exchange units of air-conditioning while freezing to indoor environment, to accelerate the refrigerating efficiency of air-conditioning.

In the third embodiment of the present invention, in summer condition, become according to state modulators such as indoor temperature and indoor humidities The mode of operation of the operational mode of capacity compressor and two heat exchange units, its idiographic flow includes：Obtain indoor temperature, room Interior humidity, and user setting target cryogenic temperature, target indoor humidity；It is more than in the indoor humidity preset indoor wet When spending threshold value, control variable conpacitance compressor is with twin-tub mode operation；Determine first temperature difference of indoor temperature and target refrigeration humidity Value, determines the first humidity differences of indoor humidity and target indoor humidity；It is not more than preset temperature difference threshold in the first temperature approach, And first humidity differences be more than preset psychrometric difference threshold value when, control two heat exchange units run with dehumidification mode.Above-mentioned control Method processed can control two heat exchange units of air-conditioning while being dehumidified to indoor environment, to accelerate the dehumidification rate of air-conditioning.

In the fourth embodiment of the present invention, in summer condition, become according to state modulators such as indoor temperature and indoor humidities The mode of operation of the operational mode of capacity compressor and two heat exchange units, its idiographic flow includes：Obtain indoor temperature, room Interior humidity, and user setting target cryogenic temperature, target indoor humidity；Humidity is more than preset indoor humidity threshold indoors During value, control variable conpacitance compressor is with twin-tub mode operation；The first temperature approach of indoor temperature and target refrigeration humidity is determined, really Determine the first humidity differences of indoor humidity and target indoor humidity；It is not more than preset temperature difference threshold, and in the first temperature approach When one humidity differences are more than preset psychrometric difference threshold value, the periodic alternate run in the following manner of two heat exchange units is controlled：The One mode, the first heat exchange unit is run with dehumidification mode, and the second heat exchange unit is run with air supply pattern；Second method, two are changed Hot cell is run with dehumidification mode.Above-mentioned control method can control side of two heat exchange units of air-conditioning to dehumidify and blow Formula alternate run, so as to accelerate the dehumidification rate of air-conditioning, while can also make air-conditioning that there is the air-supply effect of natural wind.

In the fifth embodiment of the present invention, in summer condition, according to the state modulator variable conpacitance compressor such as indoor temperature Operational mode and two heat exchange units mode of operation, its idiographic flow includes：Obtain indoor temperature and user's setting Target cryogenic temperature；When temperature is not more than preset inside temperature thresholds indoors, control variable conpacitance compressor is with twin-stage mould Formula is run；Determine the first temperature approach of indoor temperature and target refrigeration humidity；It is not more than preset temperature difference threshold in the first temperature approach During value, the first heat exchange unit of control is run with air supply pattern, and the second heat exchange unit is run in a chiller mode.Above-mentioned control method can To control the single heat exchange unit of air-conditioning to freeze indoor environment, to accelerate the refrigerating efficiency of air-conditioning, while can also make Air-conditioning has the air-supply effect of natural wind.

In the sixth embodiment of the present invention, in summer condition, according to the state modulator variable conpacitance compressor such as indoor humidity Operational mode and two heat exchange units mode of operation, its idiographic flow includes：What acquisition indoor humidity and user set Target indoor humidity；When humidity is not more than preset indoor humidity threshold value indoors, control variable conpacitance compressor is with Bi-level mode Operation；Determine the first humidity differences of indoor humidity and target indoor humidity；It is not more than preset humidity in the first humidity differences During poor threshold value, the first heat exchange unit of control is run with air supply pattern, and the second heat exchange unit is run with dehumidification mode.Above-mentioned controlling party Method can control the single heat exchange unit of air-conditioning to dehumidify indoor environment, to accelerate the refrigerating efficiency of air-conditioning, while also may be used So that air-conditioning has the air-supply effect of natural wind.

In the seventh embodiment of the present invention, in summer condition, according to the state modulator variable conpacitance compressor such as indoor temperature Operational mode and two heat exchange units mode of operation, its idiographic flow includes：What acquisition indoor temperature and user set Target cryogenic temperature, sleep period；When temperature is not more than preset inside temperature thresholds indoors, control variable conpacitance compressor with Bi-level mode is run；Determine the first temperature approach of indoor temperature and target refrigeration humidity；It is not more than in the first temperature approach preset Temperature difference threshold, and air conditioner, when being in sleep period and running, the first heat exchange unit of control is out of service, and the second heat exchange unit is to make Cold mode operation.Above-mentioned control method can control the single heat exchange unit of air-conditioning to freeze indoor environment, to ensure room Interior temperature disclosure satisfy that the comfort level requirement of user；And the refrigeration of the first heat exchange unit can be stopped in user's sleep period or given Wind is run, so as to avoid influenceing the problem of user sleeps because indoor environment temperature is too low.

In the eighth embodiment of the present invention, in summer condition, according to the state modulator variable conpacitance compressor such as indoor humidity Operational mode and two heat exchange units mode of operation, its idiographic flow includes：What acquisition indoor humidity and user set Target indoor humidity, sleep period；When humidity is not more than preset indoor humidity threshold value indoors, control variable conpacitance compressor with Bi-level mode is run；Determine the first humidity differences of indoor humidity and target indoor humidity；It is not more than in the first humidity differences pre- The psychrometric difference threshold value put, and air conditioner, when being in sleep period and running, the first heat exchange unit of control is out of service, and the second heat exchange is single Member is run with dehumidification mode.Above-mentioned control method can control the single heat exchange unit of air-conditioning to dehumidify indoor environment, with Ensure that indoor temperature disclosure satisfy that the comfort level requirement of user；And removing for the second heat exchange unit can be stopped in user's sleep period Wet or air-supply operation, so as to avoid influenceing the problem of user sleeps because indoor environment temperature is too low.

In the ninth embodiment of the present invention, operating mode, becomes according to state modulators such as indoor temperature and outside humidities in the winter time The mode of operation of the operational mode of capacity compressor and two heat exchange units, its idiographic flow includes：Obtain indoor temperature, room Outer humidity, and the target of user's setting heat temperature when outside humidity is more than preset outside humidity threshold value, control transfiguration Capacity compressor is with twin-tub mode operation；Determine that indoor humidity and target heat the first temperature approach between temperature；In first temperature difference When value is not more than preset temperature difference threshold, the first heat exchange unit of control is run with heating mode, and the second heat exchange unit is out of service. First heat exchange unit of air conditioner can reach and indoor environment is carried out to heat thermogenic action, improve by running heating mode The comfort level of user, while can also reduce as the outdoor unit frosting problem caused by the higher levels of humidity of outdoor environment.In addition, this Another heat exchange unit of invention control is out of service, it is possible to reduce air-conditioning heating runs power consumption, improves the operational energy efficiency of air-conditioning.

In the tenth embodiment of the present invention, operating mode in the winter time, according to the state modulator variable conpacitance compressor such as indoor temperature Operational mode and two heat exchange units mode of operation, its idiographic flow includes：What acquisition indoor temperature and user set Target heats temperature；Determine that indoor temperature heats the first temperature approach of temperature with target；Temperature is not more than preset room indoors During interior temperature threshold, control variable conpacitance compressor is with twin-tub mode operation；And it is more than preset temperature difference threshold in the first temperature approach During value, two heat exchange units of control are run with heating mode.Above-mentioned control method can control two heat exchange units of air-conditioning Indoor environment is heated simultaneously, to accelerate the heating efficiency processed of air-conditioning.

In the 11st embodiment of the present invention, operating mode in the winter time, according to state modulators such as indoor temperature and outdoor temperatures The mode of operation of the operational mode of variable conpacitance compressor and two heat exchange units, its idiographic flow includes：Obtain indoor temperature And outdoor temperature；When temperature is not more than preset inside temperature thresholds indoors, control variable conpacitance compressor is transported with twin-tub pattern OK；And when outdoor temperature reaches solidifying ice-lolly part, control the first heat exchange unit run with heating mode, another heat exchange unit with Defrost pattern is run, wherein, the interior conduit for running the refrigerant circulation stream of the heat exchange unit of defrost pattern is blocked, and refrigerant only flows Heat exchanger through outdoor unit.First heat exchange unit of air conditioner can reach and indoor environment is carried out by running heating mode Thermogenic action is heated, the comfort level of user is improved, while the refrigerant flow where controlling another heat exchange unit is carried out to outdoor unit Defrost, to reduce the frosting problem of outdoor unit.

In the 12nd embodiment of the present invention, operating mode, compresses according to the state modulator such as indoor temperature varying capacity in the winter time The mode of operation of the operational mode of machine and two heat exchange units, its idiographic flow includes：Obtain indoor temperature and user's setting Target heat temperature；When temperature is more than preset inside temperature thresholds indoors, control variable conpacitance compressor is with Bi-level mode Operation；Determine that indoor temperature and target heat the first temperature approach between temperature；It is not more than the preset temperature difference in the first temperature approach During threshold value, the first heat exchange unit of control is run with air supply pattern, and the second heat exchange unit is run with heating mode.Two of air conditioner Heat exchange unit by being separately operable heating mode and air supply pattern, can in the winter time indoor temperature exceed inside temperature thresholds when pair Indoor environment is heated and blown, to ensure that indoor temperature disclosure satisfy that the comfort level requirement of user.

In the 13rd embodiment of the present invention, operating mode, compresses according to the state modulator such as indoor temperature varying capacity in the winter time The mode of operation of the operational mode of machine and two heat exchange units, its idiographic flow includes：Obtain indoor temperature and user's setting Target heat temperature, sleep period；Indoors temperature be more than preset inside temperature thresholds when, control variable conpacitance compressor with Bi-level mode is run；It is not more than preset temperature difference threshold in the first temperature approach, and air conditioner is when being in sleep period and running, control First heat exchange unit is out of service, and the second heat exchange unit is run with heating mode.The heat exchange unit of air conditioner is heated by operation Pattern, can in the winter time indoor temperature exceed inside temperature thresholds when indoor environment is heated, to ensure indoor temperature energy Enough meet the comfort level requirement of user；And can user's sleep period stop the first heat exchange unit the operation that heats or blow, So as to avoid influenceing the problem of user sleeps because indoor environment temperature is too high.

As shown in Fig. 2 present invention also offers a kind of air conditioner, air conditioner has variable conpacitance compressor and controller, become The operational mode of capacity compressor includes Bi-level mode and twin-tub pattern, and the indoor set of air conditioner at least includes two heat exchange lists Member, each heat exchange unit has single heat exchanger and driving blower fan；Air conditioner also includes the temperature for being used to detect indoor temperature Sensor and the humidity sensor for detecting indoor humidity；Controller is according to the control method control disclosed in previous embodiment In the operation of air conditioner processed, embodiment, controller is mainly used in：Obtain indoor temperature, indoor humidity, and the mesh that user sets Mark cryogenic temperature, target indoor humidity；Determine the first temperature approach of indoor temperature and target cryogenic temperature, determine indoor humidity with First humidity differences of target indoor humidity；When temperature is more than preset inside temperature thresholds indoors, the change of air conditioner is controlled Capacity compressor with twin-tub mode operation, wherein, two compression cylinders of the variable conpacitance compressor of twin-tub pattern including air conditioner The operational mode of independent compression refrigerant；And it is more than preset temperature difference threshold in the first temperature approach, and the first humidity differences are little When preset psychrometric difference threshold value, the periodic alternate run in the following manner of two heat exchange units is controlled：First method, first changes Hot cell is run in a chiller mode, and the second heat exchange unit is run with air supply pattern；Second method, two heat exchange units are with refrigeration Mode operation.

In one embodiment of the invention, controller is additionally operable to：Determine the second of indoor temperature and inside temperature thresholds Temperature approach；And determine the second humidity differences of indoor humidity and preset indoor humidity threshold value；According to the second temperature approach and Two humidity differences, adjust the working frequency of variable conpacitance compressor.

In one embodiment of the invention, controller is used for：In 0≤Δ T₂＜ T₂, and 0≤Δ RH₂＜ RH₂When, control Variable conpacitance compressor is with the first working frequency H₁Operation；In T₂≤ΔT₂, and RH₂≤ΔRH₂When, control variable conpacitance compressor is with the Two working frequency H₂Operation；Wherein, Δ T₂For the second temperature approach, Δ RH₂For the second humidity differences, T₂For the first preset temperature Threshold value, RH₂For the first preset humidity threshold, H₁＞ H₂。

In one embodiment of the invention, controller is additionally operable to：Determine between the first temperature approach and temperature difference threshold Three temperature approach；And the 3rd humidity differences between the first humidity differences of determination and psychrometric difference threshold value；According to the 3rd temperature approach and 3rd humidity differences, adjust the rotating speed of the driving blower fan of each heat exchange unit.

In one embodiment of the invention, controller is used for：In 0≤Δ T₃＜ T₃, and 0≤Δ RH₃＜ RH₃When, control The driving blower fan of heat exchange unit of refrigeration mode is run with the first rotating speed R₁₁Operation；In T₃≤ΔT₃, and RH₃≤ΔRH₃When, control The driving blower fan of the heat exchange unit of system operation refrigeration mode is with the second rotating speed R₁₂Operation；Wherein, Δ T₃For the 3rd temperature approach, T₃For Preset second temperature threshold value, Δ RH₃For the 3rd humidity differences, RH₃For the second preset humidity threshold, R₁₁＞ R₁₂。

Meanwhile, controller of the invention can be also used for control air conditioner operation one or more foregoing first to the tenth The related procedure of control method disclosed in three embodiments.

In order to realize that aforementioned controllers can control air conditioner to perform above-mentioned flow, specific part of the present invention to air conditioner Composition and structure are described further：

Air conditioner includes outdoor unit 1 and indoor set 2, wherein, outdoor unit 1 is arranged at outdoor, for being carried out with outdoor environment Heat exchange；Indoor set 2 is arranged at interior, for being exchanged heat with indoor environment, thus realize the refrigeration to indoor environment, heat or The operations such as person's dehumidifying.

In one embodiment of this invention, the outdoor unit 1 of air conditioner mainly includes variable conpacitance compressor component, outdoor heat exchange The grade part of device 11, wherein, variable conpacitance compressor component includes the four-way valve 13 of variable conpacitance compressor 12 and first, and the present invention is by cutting Pattern switching of the different valves position realization to variable conpacitance compressor 12 of the first four-way valve 13 is changed, so as to change variable conpacitance compressor 12 Capacity so that it is cold under different operating modes that the Bi-level mode and twin-tub pattern of variable conpacitance compressor 12 can meet air-conditioning respectively Matchmaker's demand.

In specific embodiment, variable conpacitance compressor 12 includes the first compression cylinder 121 and the second compression cylinder 122, two compressions Cylinder individually can perform squeeze operation to refrigerant, in the example shown, for variable conpacitance compressor unit, two compressions The cylinder body of cylinder is not connected mutually, and the present invention realizes the connection of two compression cylinders by the first four-way valve 13, and in the first four-way When valve 13 is in different valves position, two compression cylinders respectively constitute Bi-level mode refrigerant flow and twin-tub pattern refrigerant flow.

5 ends for being connected with outside refrigerant pipeline are offered in embodiment, on the body of variable conpacitance compressor 12 altogether Mouthful, including first port 123, second port 124, the 3rd port 125, the 4th port 126 and exhaust outlet 127, wherein, the 4th end Mouth 126 is connected in the internal body of variable conpacitance compressor 12 with exhaust outlet 127, the gas exhaust piping of exhaust outlet 127 and compressor It is connected, the refrigerant after overcompression is inputted along gas exhaust piping in the medium circulation pipeline of air conditioner；First compression cylinder 121 have the first air inlet 1211 and the first gas outlet 1212, and the first air inlet 1211 is connected with first port 123, and second goes out Gas port 1212 is connected with second port 124；Second compression cylinder 122 has the second air inlet 1221 and the second gas outlet 1222, its In, the second air inlet 1221 is connected with the 3rd port 123, the second gas outlet 1222 and the exhaust outlet of variable conpacitance compressor 12 127 are connected.

The structure of first four-way valve 13 mainly includes valve body, the valve block for the valve pocket being arranged in valve body, and first interface 131st, second interface 132, the 3rd interface 133 and the 4th interface 134, valve block have connection first interface 131 and second interface 132nd, the first valve position of the 3rd interface 133 of connection and the 4th interface 134, connection second interface 132 and the 3rd interface 133, blocking The second valve position of the interface 134 of first interface 131 and the 4th；Wherein, the second air inlet of the compression cylinder 122 of second interface 132 and second Mouth 1221 is connected, and the 3rd interface 132 is connected with the first gas outlet 1211 of the first compression cylinder 121, and the 4th interface 134 passes through 4th port 126 is connected with exhaust outlet 127.

When the first four-way valve 13 is in foregoing the first valve position, variable conpacitance compressor 12 is with twin-tub mode operation, refrigerant Flow path in variable conpacitance compressor component includes two：(1) refrigerant to be compressed is along the first of variable conpacitance compressor 12 Port 123 is flowed into, and refrigerant flows through the air inlet 1211 → the first of first port 123 → the first compression of variable conpacitance compressor 12 successively 3rd interface 133 of the four-way valve 13 of second port 124 → the first of the 1212 → variable conpacitance compressor of gas outlet 12 of cylinder 121 → the first 4th 126 → variable conpacitance compressor of port 12 of the 4th 134 → variable conpacitance compressor of interface 12 of the four-way valve of → valve pocket-the first 13 Exhaust outlet 127, in this refrigerant flow path, refrigerant carries out first compression by the first compression cylinder 121, finally via exhaust outlet 127 outputs are into the refrigerant circulation stream of air conditioner；(2) first interface 131 of refrigerant to be compressed along the first four-way valve 13 flows Enter, refrigerant flows through second interface 132 → change of the four-way valve 13 of 131 → valve pocket of first interface of the first four-way valve 13 → first successively 1222 → the change of gas outlet of the 3rd port 125 → the second air inlet, 1221 → the second compression cylinder 122 → the second of capacity compressor 12 The exhaust outlet 127 of capacity compressor 12, in this refrigerant flow path, refrigerant carries out first compression by the second compression cylinder 122, most Exported by by exhaust outlet 127 into the refrigerant circulation stream of air conditioner.In two above-mentioned refrigerant flow paths, varying capacity Two compression cylinders of compressor 12 can individually perform the operations such as air-breathing, compression and exhaust, can be effectively increased refrigerant Decrement, improves the refrigerant output quantity of compressor, is freezed, heated or dehumidified with the multiple heat exchange units for meeting indoor set 2 Deng coolant quantity demand when operating.

When the first four-way valve 13 is in foregoing the second valve position, variable conpacitance compressor 12 is run with Bi-level mode, refrigerant Flow path in variable conpacitance compressor 12 is one：The first port 123 of refrigerant to be compressed along variable conpacitance compressor 12 Flow into, refrigerant flow through successively the compression cylinder 121 of 123 → the first air inlet of first port 1211 → the first of variable conpacitance compressor 12 → 3rd 134 → valve pocket of interface of the first four-way valves of second port 124- 13 of first 1222 → variable conpacitance compressor of gas outlet 12 → The air inlet 1221 → the second of the 3rd port 125 → the second of 132 → variable conpacitance compressor of second interface 12 of first four-way valve 13 The exhaust outlet 127 of second 1222 → variable conpacitance compressor of gas outlet 122 of the compression cylinder 122 of compression cylinder 122 → the second, in this refrigerant In flow path, refrigerant carries out first compression by the first compression cylinder 121, and carries out second-compressed by the second compression cylinder 122, finally Exported via exhaust outlet 127 into the refrigerant circulation stream of air conditioner.In above-mentioned refrigerant flow path, variable conpacitance compressor 12 two compression cylinders successively perform the operations such as air-breathing, compression and exhaust, so that the second-compressed to refrigerant is realized, can be effective The compression ratio of refrigerant is improved, to strengthen the heat exchange efficiency of indoor heat exchanger and outdoor heat exchanger 11.

In embodiment, air conditioner of the invention also includes being used to detect the temperature sensor of indoor temperature and for detecting Indoor temperature and indoor humidity that the humidity sensor of indoor humidity, temperature sensor and humidity sensor can be detected Information transfer is to controller.In addition, air conditioner also includes being used to detect the humidity sensor of outside humidity and for detecting outdoor Outdoor temperature and outside humidity that the humidity sensor of humidity, said temperature sensor and humidity sensor can be detected Information transfer is to controller.

Outdoor heat exchanger 11 includes the refrigerant mouthful 112 of the first refrigerant mouthful 111 and second, and refrigerant is via the first 111 Hes of cold coal mouthful Second cold coal mouthful 112 flows in or out outdoor heat exchanger 11；Wherein, in operation of air conditioner refrigeration mode or dehumidification mode, transfiguration The refrigerant that capacity compressor 12 is discharged is flowed into from the first cold coal mouthful 111, in outdoor heat exchanger 11 and after outdoor environment heat exchange, refrigerant Flowed out from the second cold coal mouthful 112, and flow to the indoor heat exchanger of two heat exchange units of indoor set 2, with continuation and indoor environment Heat exchange；In operation of air conditioner heating mode, the refrigerant of the indoor heat exchanger discharge of two heat exchange units flows from the second cold coal mouthful 112 Enter outdoor heat exchanger 11, after being exchanged heat in outdoor heat exchanger 11 with outdoor environment, refrigerant flows out from the first cold coal mouthful 111, cocurrent To variable conpacitance compressor 12, to be compressed again to refrigerant by variable conpacitance compressor 12.

In embodiment, outdoor unit 1 also includes the second four-way valve 14 and first for being used to use cooperatively with the first heat exchange unit Gas-liquid separator 16, and the 3rd four-way valve 15 and the second gas-liquid separator 17 for being used cooperatively with the second heat exchange unit； Indoor set 2 includes the first heat exchange unit and the second heat exchange unit, wherein, the first heat exchange unit includes the He of the first indoor heat exchanger 21 First driving blower fan, the second heat exchange unit includes the second indoor heat exchanger 22 and the second driving blower fan, the first indoor heat exchanger 21 Individually it can be exchanged heat with the second indoor heat exchanger 22 with indoor environment.

Wherein, the first indoor heat exchanger 21 by the second four-way valve 14 and outdoor heat exchanger 11, the first gas-liquid separator 16, Variable conpacitance compressor 12 is connected, and constitutes the first refrigerant circulation stream.

The structure and connected mode of each part of first refrigerant circulation stream be：It is cold that first indoor heat exchanger 21 includes first The cold coal mouthful 212 of coal mouthful 211 and second；First gas-liquid separator 16 includes the first import 161 and first outlet 162；Second four-way Valve 14 includes valve body, the valve block for the valve pocket being arranged in valve body, and first interface 141, second interface 142, the 3rd interface 143 With the 4th interface 144, valve block has connection first interface 141 and second interface 142, connects the 3rd interface 143 and the 4th interface 144 the first valve position, connects second interface 142 and the 3rd interface 143, connects the second of the interface 144 of first interface 141 and the 4th Valve position；The first interface 141 of second four-way valve 14 is connected with the first cold coal mouthful 211 of the first indoor heat exchanger 21, second interface 142 are connected with the first import 161 of the first gas-liquid separator 16, the first cold coal mouthful of the 3rd interface 143 and outdoor heat exchanger 11 111 connections, the 4th interface 144 is connected with the exhaust outlet 127 of variable conpacitance compressor 12；Second cold coal of the first indoor heat exchanger 21 Mouth 212 is connected with the second cold coal mouthful 112 of outdoor heat exchanger 11；The first outlet 161 and the 1st of first gas-liquid separator 16 The first interface 131 of port valve 13 is connected.

When the first heat exchange unit of air conditioner runs refrigeration mode or dehumidification mode, the valve block of the second four-way valve 14 is in First valve position, then the refrigerant sequence of flow of the first refrigerant circulation stream is as shown in the solid arrow in figure：Variable conpacitance compressor 12 The four-way valve 14 of exhaust outlet 127 → the second the four-way valve 14 of the 4th interface 144 → the second the four-way valve 14 of valve pocket → second Second cold coal of first 111 → outdoor heat exchanger of cold coal mouthful, 11 → outdoor heat exchanger 11 of three 143 → outdoor heat exchangers of interface 11 The second cold coal mouthful indoor heat exchanger 21 of 212 → the first indoor heat exchanger 21 → the first of 112 → the first indoor heat exchangers 21 of mouth The four-way valve 14 of the valve pocket of the four-way valve 14 of first interface 141 → the second of first cold coal mouthful, 211 → the second four-way valves 14 → second The gas-liquid separator of 161 → the first gas-liquid separator of the first import 16 → the first of the gas-liquid separator 16 of second interface 142 → the first The first interface 131 of 161 four-way valve 13 of first outlet 162 → the first, refrigerant flows back into change again via the first four-way valve 13 It is compressed in capacity compressor 12, so as to realize constant flow of the refrigerant in whole refrigerant circulation stream.

When the first heat exchange unit of air conditioner runs heating mode, the valve port of the second four-way valve 14 is in the second valve position, Then the refrigerant sequence of flow of the first refrigerant circulation stream is as shown in the dotted arrow in figure：The exhaust outlet of variable conpacitance compressor 12 The first interface 141 of the four-way valve 14 of the valve pocket of the four-way valve 14 of the 4th interface 144 → the second of 127 → the second four-way valves 14 → second The second of the first cold coal mouthful indoor heat exchanger 21 of 211 → the first indoor heat exchanger 21 → the first of the → the first indoor heat exchanger 21 is cold First cold coal mouthful of second 112 → outdoor heat exchanger of cold coal mouthful, 11 → outdoor heat exchanger 11 of coal mouthful 212 → outdoor heat exchanger 11 The second interface 142 of the four-way valve 14 of the valve pocket of the four-way valve 14 of the 3rd interface 143 → the second of 111 → the second four-way valves 14 → second The first outlet of the gas-liquid separator 16 of 161 → the first gas-liquid separator of the first import 16 → the first of → the first gas-liquid separator 16 The first interface 131 of 162 → the first four-way valves 13, refrigerant flows back into variable conpacitance compressor 12 again via the first four-way valve 131 Inside it is compressed, so as to realize constant flow of the refrigerant in whole refrigerant circulation stream.

In addition, the second indoor heat exchanger 22 by the 3rd four-way valve 15 and outdoor heat exchanger 11, the second gas-liquid separator 17, Variable conpacitance compressor 12 is connected, and constitutes the second refrigerant circulation stream.

The structure and connected mode of each part of second refrigerant circulation stream be：It is cold that second indoor heat exchanger 22 includes first The cold coal mouthful 222 of coal mouthful 221 and second；Second gas-liquid separator 17 includes the second import 171 and second outlet 172；3rd four-way Valve 15 includes valve body, the valve block for the valve pocket being arranged in valve body, and first interface 151, second interface 152, the 3rd interface 153 With the 4th interface 154, valve block has connection first interface 151 and second interface 152, connects the 3rd interface 153 and the 4th interface 154 the first valve position, connects second interface 152 and the 3rd interface 153, connects the second of the interface 154 of first interface 151 and the 4th Valve position；The first interface 151 of 3rd four-way valve 15 is connected with the first cold coal mouthful 221 of the second indoor heat exchanger 22, second interface 152 are connected with the second import 171 of the second gas-liquid separator 17, the first cold coal mouthful of the 3rd interface 153 and outdoor heat exchanger 11 111st, the second cold coal mouthful 112 is connected respectively, for the ease of distinguishing, and the present invention is by the of the 3rd interface 153 and outdoor heat exchanger 11 Refrigerant pipeline between one cold coal mouthful 111 is defined as the first refrigerant branch road 181, by the 3rd interface 153 and outdoor heat exchanger 11 Refrigerant pipeline between second cold coal mouthful 112 is defined as the second refrigerant branch road 182；4th interface 154 and variable conpacitance compressor 12 Exhaust outlet 127 connect；Second cold coal mouthful 222 of the second indoor heat exchanger 22 and the second cold coal mouthful 112 of outdoor heat exchanger 11 Connection；The second outlet 172 of second gas-liquid separator 17 is connected with the first air inlet 1211 of the first compression cylinder 121.

In embodiment, between the 3rd interface 153 of the 3rd four-way valve 15 and the first of outdoor heat exchanger 11 the cold coal mouthful 111 The first magnetic valve 191 is provided with first refrigerant branch road 181, the first magnetic valve 191 can be used for control conducting or blocking first cold Matchmaker's branch road 181；Second between 3rd interface 153 of the 3rd four-way valve 15 and the second of outdoor heat exchanger 11 the cold coal mouthful 112 is cold The second magnetic valve 192 is provided with matchmaker's branch road 182, the second magnetic valve 192 can be used for turning on or blocking the second refrigerant branch road 182； On refrigerant pipeline between second cold coal mouthful 112 of the second cold coal mouthful 222 and outdoor heat exchanger 11 of the second indoor heat exchanger 22 The 3rd magnetic valve 193 is provided with, for turning on or blocking this section of refrigerant pipeline.

When the second heat exchange unit of air conditioner runs refrigeration mode or dehumidification mode, the valve block of the 3rd four-way valve 15 is in The first magnetic valve 191 on first valve position, the first refrigerant branch road 181 is opened, the second magnetic valve on the second refrigerant branch road 182 182 close, then the refrigerant sequence of flow of the second refrigerant circulation stream is as shown in the solid arrow in figure：Variable conpacitance compressor 12 The 3rd of the four-way valve 15 of the valve pocket of the four-way valve 15 of the 4th interface the 154 → the 3rd of the four-way valve 15 of exhaust outlet 127 → the 3rd → the 3rd First cold coal mouthful 111 → outdoor heat exchanger, 11 → outdoor heat exchange of the 181 → outdoor heat exchanger of refrigerant branch road 11 of interface 153 → the first Second 222 → the second indoor heat exchangers 22 → the second of cold coal mouthful of the second 112 → the second indoor heat exchangers 22 of cold coal mouthful of device 11 The valve pocket of the four-way valve 15 of the first interface 153 of the 221 → the 3rd four-way valve 15 of the first cold coal mouthful of indoor heat exchanger 22 → the 3rd → The gas-liquid separator 17 of the second import 171 → the second of the gas-liquid separator 17 of second interface 152 → the second of 3rd four-way valve 15 → The first port 123 of 172 → variable conpacitance compressor of second outlet 12 of first gas-liquid separator 17, refrigerant flows back into transfiguration again It is compressed in capacity compressor 12, so as to realize constant flow of the refrigerant in whole refrigerant circulation stream.

When the second heat exchange unit of air-conditioning runs heating mode, the valve block of the 3rd four-way valve 15 is in the second valve position, the The first magnetic valve 191 on one refrigerant branch road 181 is opened, and the second magnetic valve 192 on the second refrigerant branch road 182 is closed, then and The refrigerant sequence of flow of two refrigerant circulation streams is as shown in the dotted arrow in figure：The exhaust outlet 127 of variable conpacitance compressor 12 → The first interface 151 → the of the four-way valve 15 of valve pocket → the three of the four-way valve 15 of the 4th interface the 154 → the 3rd of 3rd four-way valve 15 Second cold coal mouthful of the first cold coal mouthful indoor heat exchanger 22 of 221 → the second indoor heat exchanger 22 → the second of two indoor heat exchangers 22 First cold coal mouthful 111 of second 112 → outdoor heat exchanger of cold coal mouthful, 11 → outdoor heat exchanger 11 of 222 → outdoor heat exchanger 11 → The four-way valve 15 of the valve pocket of the four-way valve 15 of the 3rd interface the 153 → the 3rd of the four-way valve 15 of first refrigerant branch road the 181 → the 3rd → the 3rd The gas-liquid separator 17 of second interface 152 → the second the gas-liquid separation of 171 → the second gas-liquid separator of the second import 17 → the second The first port 123 of 172 → variable conpacitance compressor of second outlet 12 of device 17, refrigerant is flow back into variable conpacitance compressor 12 again It is compressed, so as to realize constant flow of the refrigerant in whole refrigerant circulation stream.

In addition, the second refrigerant circulation stream of the invention can be also used in the winter time changing the outdoor heat exchanger 11 of air-conditioning Frost processing, i.e., the second heat exchange unit can also carry out defrost pattern, when the second heat exchange unit performs defrost pattern, the 3rd four-way The first magnetic valve 191 that the valve block of valve 15 is on the first valve position, the first refrigerant branch road 181 is closed, on the second refrigerant branch road 182 The second magnetic valve 192 open, the 3rd magnetic valve 193 is closed, and now the second four-way valve 14 of the first refrigerant circulation stream is in Second valve position, the first heat exchange unit is normally heated to indoor, and the refrigerant sequence of flow of the second refrigerant circulation stream is：Become Valve pocket → 3rd of the four-way valve 15 of the 4th interface the 154 → the 3rd of the four-way valve 15 of the exhaust outlet 127 of capacity compressor 12 → the 3rd Second 112 → outdoor heat exchange of cold coal mouthful of the 182 → outdoor heat exchanger of refrigerant branch road 11 of the 3rd interface 153 → the second of four-way valve 15 The four-way valve 14 of the 3rd interface 153 → the second of first 111 → the second four-way valves 14 of cold coal mouthful of 11 → outdoor heat exchanger of device 11 The gas-liquid separation of the first import 161 → the first of the gas-liquid separator 16 of second interface 142 → the first of the four-way valve 14 of valve pocket → second The first interface 131 of the four-way valve 13 of first outlet 162 → the first of the gas-liquid separator 16 of device 16 → the first.In the flowing of this refrigerant In path, the high temperature refrigerant that variable conpacitance compressor 12 is discharged is not passed through the second indoor heat exchanger 22 of the second heat exchange unit, high temperature Refrigerant is flowed directly into outdoor heat exchanger 11, and to realize that the defrost to outdoor heat exchanger 11 is handled, and temperature is reduced after defrost Part pipeline of the refrigerant along the first refrigerant circulation stream flow back into variable conpacitance compressor 12 and be compressed again, so as to realize Constant flow of the refrigerant in whole refrigerant circulation stream.

It is cold between second cold coal mouthful 112 of the second cold coal mouthful 211 and the device of outdoor heat exchange 11 of the first indoor heat exchanger 21 First throttle valve 23 is provided with matchmaker's pipeline, for carrying out throttle operation to the refrigerant for flowing into the first indoor heat exchanger 21；Second Set on refrigerant pipeline between second cold coal mouthful 112 of the second cold coal mouthful 222 and outdoor heat exchanger 11 of indoor heat exchanger 22 There is second throttle 24, for carrying out throttle operation to the refrigerant for flowing into heat exchanger 22 in second Room.

Optionally, for the ease of two refrigerant circulation streams pipeline and outdoor heat exchanger 11 connection, the second four-way valve Refrigerant pipeline between 14 the 3rd interface 143 and outdoor heat exchanger 11, is connected in parallel with the first refrigerant branch road 181, with fortune Row refrigeration flows into outdoor heat exchanger 11 after refrigerant can conflux during dehumidification mode, or when heating outdoor heat exchanger 11 refrigerant It can branch in two pipelines；Meanwhile, the second cold coal mouthful 212 and the second of outdoor heat exchanger 11 of the first indoor heat exchanger 21 Refrigerant pipeline between cold coal mouthful 112, the second cold coal mouthful 222 and the second of outdoor heat exchanger 11 with the second indoor heat exchanger 22 Refrigerant pipeline between cold coal mouthful 112 is connected in parallel, and the second refrigerant branch road 182 one end also the second of outdoor heat exchanger 11 It is connected in parallel at cold coal mouthful 112 with above-mentioned parallel transistor section.

In addition, when variable conpacitance compressor 12 is run with Bi-level mode, the valve port of the first four-way valve 13 is in the second valve position, First interface 131 is blocked, the first refrigerant circulation stream is also blocked in the lump, therefore Bi-level mode is run in variable conpacitance compressor When, air conditioner is to be realized with the second refrigerant circulation stream where the second heat exchange unit to the refrigeration of indoor environment, heat or remove The operating process such as wet.

It should be appreciated that the invention is not limited in the flow and structure for being described above and being shown in the drawings, And various modifications and changes can be being carried out without departing from the scope.The scope of the present invention is only limited by appended claim System.

Claims

1. a kind of control method of air conditioner, it is characterised in that the control method includes：

Obtain indoor temperature, indoor humidity, and user setting target cryogenic temperature, target indoor humidity；

When the indoor temperature is more than preset inside temperature thresholds, the variable conpacitance compressor is controlled to be transported with twin-tub pattern OK, wherein, two independent compression refrigerants of compression cylinder of the variable conpacitance compressor of the twin-tub pattern including the air conditioner Operational mode；

The first temperature approach of the indoor temperature and the target cryogenic temperature is determined, the indoor humidity and the target is determined First humidity differences of indoor humidity；

It is more than preset temperature difference threshold in first temperature approach, and first humidity differences are not more than preset psychrometric difference threshold During value, two periodic alternate run in the following manner of heat exchange unit are controlled：

First method, the first heat exchange unit is run in a chiller mode, and the second heat exchange unit is run with air supply pattern；

Second method, two heat exchange units are run in a chiller mode.

2. control method according to claim 1, it is characterised in that also include：

Determine the second temperature approach of the indoor temperature and the inside temperature thresholds；

Determine the second humidity differences of the indoor humidity and preset indoor humidity threshold value；

According to second temperature approach and second humidity differences, the working frequency of the variable conpacitance compressor is adjusted.

3. control method according to claim 2, it is characterised in that according to second temperature approach and second humidity Difference, adjusts the working frequency of the variable conpacitance compressor, and process includes：

In 0≤Δ T₂＜ T₂, and 0≤Δ RH₂＜ RH₂When, the variable conpacitance compressor is controlled with the first working frequency H₁Operation；

In T₂≤ΔT₂, and RH₂≤ΔRH₂When, the variable conpacitance compressor is controlled with the second working frequency H₂Operation；

Wherein, Δ T₂For second temperature approach, Δ RH₂For second humidity differences, T₂For the first preset temperature threshold, RH₂For the first preset humidity threshold, H₁＜ H₂。

4. control method according to claim 1, it is characterised in that also include：

Determine the 3rd temperature approach between first temperature approach and the temperature difference threshold；

Determine the 3rd humidity differences between first humidity differences and the psychrometric difference threshold value；

According to the 3rd temperature approach and the 3rd humidity differences, the rotating speed of the driving blower fan of each heat exchange unit is adjusted.

5. control method according to claim 4, it is characterised in that according to the 3rd temperature approach and the 3rd humidity Difference, adjusts the rotating speed of the driving blower fan of each heat exchange unit, and process includes：

In 0≤Δ T₃＜ T₃, and 0≤Δ RH₃＜ RH₃When, the driving blower fan of the heat exchange unit of the control operation refrigeration mode with First rotating speed R₁₁Operation；

In T₃≤ΔT₃, and RH₃≤ΔRH₃When, the driving blower fan of the heat exchange unit of the control operation refrigeration mode is with second turn Fast R₁₂Operation；

Wherein, Δ T₃For the 3rd temperature approach, T₃For preset second temperature threshold value, Δ RH₃For the 3rd humidity differences, RH₃For the second preset humidity threshold, R₁₁＜ R₁₂。

6. a kind of controller of air conditioner, it is characterised in that the air conditioner has variable conpacitance compressor (12) and controller, institute Stating the operational mode of variable conpacitance compressor (12) includes Bi-level mode and twin-tub pattern, and the indoor set of the air conditioner at least includes Two heat exchange units, each heat exchange unit has single heat exchanger；The air conditioner also includes being used to detect Indoor Temperature The temperature sensor of degree and the humidity sensor for detecting indoor humidity；The controller is used for：

Obtain the indoor temperature, the indoor humidity, and user's setting target cryogenic temperature, target indoor humidity；

When the indoor temperature is more than preset inside temperature thresholds, the variable conpacitance compressor of the air conditioner is controlled with twin-tub Mode operation, wherein, two compression cylinders that the twin-tub pattern includes the variable conpacitance compressor of the air conditioner individually compress The operational mode of refrigerant；And

Second method, two heat exchange units are run in a chiller mode.

7. air conditioner according to claim 6, it is characterised in that including outdoor unit (1),

The outdoor unit (1) includes variable conpacitance compressor component, outdoor heat exchanger (11), and the variable conpacitance compressor component includes The variable conpacitance compressor (12) and the first four-way valve (13)；

The outdoor heat exchanger (11) includes the first refrigerant mouthful (111) and the second refrigerant mouthful (112)；

The variable conpacitance compressor (12) includes the first compression cylinder (121) and the second compression cylinder (122), first compression cylinder (121) there are the first air inlet (1211) and the first gas outlet (1212), second compression cylinder (122) has the second air inlet (1221) and the second gas outlet (1222), wherein, second gas outlet (1222) of second compression cylinder (122) with it is described The exhaust outlet (127) of variable conpacitance compressor (12) is connected；

First four-way valve (13) includes valve body, the valve block for the valve pocket being arranged in the valve body, and first interface (131), second interface (132), the 3rd interface (133) and the 4th interface (134), the valve block have connection first interface (131) with second interface (132), connect the first valve position of the 3rd interface (133) and the 4th interface (134), connect second interface And the 3rd interface (133), the second valve for blocking first interface (131) and the 4th interface (134) (132)；

Wherein, the second interface (132) is connected with second air inlet (1221), the 3rd interface (133) and institute State the first gas outlet (1212) to be connected, the 4th interface (134) is connected with the exhaust outlet (127)；

The variable conpacitance compressor of the control air conditioner with twin-tub mode operation, including：Control first four-way valve (13) valve block switches to the first valve position.

8. air conditioner according to claim 7, it is characterised in that the outdoor unit also includes the second four-way valve (14) and the Three four-way valves (15), and the first gas-liquid separator (16) and the second gas-liquid separator (17)；

The indoor set (2) includes the first heat exchange unit and the second heat exchange unit, wherein, first heat exchange unit includes first Indoor heat exchanger (21), second heat exchange unit includes the second indoor heat exchanger (22)；

First indoor heat exchanger (21) passes through second four-way valve (14) and the outdoor heat exchanger (11), the first gas-liquid Separator (16), variable conpacitance compressor (12) are connected, and constitute the first refrigerant circulation stream；

Wherein, first indoor heat exchanger (21) includes the first cold coal mouthful (211) and the second cold coal mouthful (212)；Described first Gas-liquid separator (16) includes the first import (161) and first outlet (162)；Second four-way valve (14) includes valve body, set The valve block for the valve pocket being placed in the valve body, and first interface (141), second interface (142), the 3rd interface (143) and Four interfaces (144), the valve block have connection first interface (141) with second interface (142), connect the 3rd interface (143) and 4th interface (144) the first valve position, connection second interface (142) and the 3rd interface (143), connect first interface (141) and The second valve position of 4th interface (144)；

The first interface (141) of second four-way valve (14) and the first cold coal mouthful of first indoor heat exchanger (21) (211) connect, second interface (142) is connected with the first import (161) of first gas-liquid separator (16), the 3rd interface (142) it is connected with the first cold coal mouthful (111) of the outdoor heat exchanger (11), the 4th interface (144) compresses with the varying capacity Exhaust outlet (127) connection of machine (12)；

Second cold coal mouthful (212) of first indoor heat exchanger (21) and the second cold coal mouthful of the outdoor heat exchanger (11) (111) connect；

The first outlet (162) of first gas-liquid separator (16) and the first interface of first four-way valve (13) (131) it is connected.

9. air conditioner according to claim 8, it is characterised in that

Second indoor heat exchanger (22) passes through the 3rd four-way valve (15) and the outdoor heat exchanger (11), the second gas-liquid Separator (17), variable conpacitance compressor (12) are connected, and constitute the second refrigerant circulation stream；

Wherein, second indoor heat exchanger (22) includes the first cold coal mouthful (221) and the second cold coal mouthful (222)；Described second Gas-liquid separator (17) includes the second import (171) and second outlet (172)；3rd four-way valve (15) includes valve body, set The valve block for the valve pocket being placed in the valve body, and first interface (151), second interface (152), the 3rd interface (153) and Four interfaces (154), the valve block have connection first interface (151) with second interface (152), connect the 3rd interface (153) and 4th connects the first valve position of (154), connection second interface (152) and the 3rd interface (153), connects first interface (151) and the The second valve position of four interfaces (154)；

The first interface (151) of 3rd four-way valve (15) and the first cold coal mouthful of second indoor heat exchanger (22) (221) connect, second interface (152) is connected with the second import (171) of second gas-liquid separator (17), the 3rd interface (153) the first cold coal mouthful (111), the second cold coal mouthful (112) with the outdoor heat exchanger (11) is connected respectively, the 4th interface (154) it is connected with the exhaust outlet (127) of the variable conpacitance compressor (12)；

Second cold coal mouthful (222) of second indoor heat exchanger (22) and the second cold coal mouthful of the outdoor heat exchanger (11) (112) connect；

The second outlet (172) of second gas-liquid separator (17) and the first air inlet of first compression cylinder (121) Mouth (1211) is connected；

The 3rd interface (153) of 3rd four-way valve (15) and the first of the outdoor heat exchanger (11) the cold coal mouthful (111) the first magnetic valve (191), the 3rd interface of the 3rd four-way valve (11) are provided with the refrigerant pipeline between (153) it is provided with the second magnetic valve on the refrigerant pipeline between the second cold coal mouthful (112) of the outdoor heat exchanger (11) (1920；Second cold coal mouthful (222) of second indoor heat exchanger (22) and the second cold coal mouthful of the outdoor heat exchanger (11) (112) the 3rd magnetic valve (193) is provided with the refrigerant pipeline between；Second cold coal mouthful of first indoor heat exchanger (21) (212) it is provided with first throttle valve on the refrigerant pipeline between the second cold coal mouthful (112) of the outdoor heat exchanger (11) (23), the second of second indoor heat exchanger (22) the cold coal mouthful (222) and the second cold coal mouthful of the outdoor heat exchanger (11) (112) second throttle (24) is provided with the refrigerant pipeline between.