CN203928271U - Air-conditioner system - Google Patents
Air-conditioner system Download PDFInfo
- Publication number
- CN203928271U CN203928271U CN201320534927.4U CN201320534927U CN203928271U CN 203928271 U CN203928271 U CN 203928271U CN 201320534927 U CN201320534927 U CN 201320534927U CN 203928271 U CN203928271 U CN 203928271U
- Authority
- CN
- China
- Prior art keywords
- defrost
- temperature
- heat exchanger
- air
- compressor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The utility model discloses a kind of air-conditioner system, comprising: compressor, cross valve, outdoor heat exchanger, first throttle parts, indoor heat exchanger, the first switch block, triple valve, second section stream unit and control device; When the first switch block is connected to the exhaust outlet of described compressor and heats between the import of outdoor heat exchanger; Described triple valve is connected between cross valve and the gas returning port of compressor, and between an interface and the gas returning port of compressor of second section stream unit connecting tee valve.This control device is first controlled the first switch block and is opened so that air-conditioner is carried out to bypass defrosting when needs defrost, when bypass defrosting is unclean, controls triple valve commutation, so that second section stream unit has extended the time of refrigerant at outdoor heat exchanger.The utility model has shortened the defrost time, and has avoided cross valve of the prior art commutation defrost and the large phenomenon of fluctuations in indoor temperature that causes.
Description
Technical field
The utility model relates to air-conditioner field, relates in particular to a kind of air-conditioner system.
Background technology
As shown in Figures 1 and 2, traditional air-conditioning system is comprised of compressor 1, cross valve 2, outdoor heat exchanger 3, throttle part 4, indoor heat exchanger 5 at present, by compressor 1, drive refrigerant to circulate in system, when refrigerant is flowed through compressor 1, cross valve 2a → cross valve 2b → outdoor heat exchanger 3 → throttle part 4 → indoor heat exchanger 5 → cross valve 2d → cross valve 2c → compressor 1, its formation be kind of refrigeration cycle, indoor temperature is reduced.When refrigerant is flowed through compressor 1 → cross valve 2a → cross valve 2d → indoor heat exchanger 5 → throttle part 4 → outdoor heat exchanger 3 → cross valve 2b → cross valve 2c → compressor 1, its formation be to heat circulation, indoor temperature is raise.The refrigerant that heats circulation time indoor heat exchanger 5 is high-temperature high-pressure state, and the refrigerant in outdoor heat exchanger 3 is low-temp low-pressure state, need to absorb external heat and complete evaporation.When outdoor temperature is lower, the temperature of outdoor heat exchanger 3 is usually less than 0 degree, and after operation a period of time, outdoor heat exchanger 3 will frosting, and after frosting, the temperature of outdoor heat exchanger 3 is more and more lower, has a strong impact on indoor heating effect.Therefore, every a period of time, will defrost to outdoor heat exchanger 3, and traditional defrosting mode is for to carry out reverse cycle defrost to cross valve 2, be that cross valve 2 is by a → d that originally heated circulation, b → c connection switches to kind of refrigeration cycle a → b, d → c connects, simultaneously, the refrigerant that by-passing valve 6 is opened the exhaust outlet A1 discharge that makes indoor heat exchanger 5 also directly enters outdoor heat exchanger 3 to realize the bypass defrosting of air-conditioner by by-passing valve 6, in whole defrost process, indoor heat exchanger 5 is incited somebody to action heat inside absorption chamber all the time, and compressor 1 need to be shut down 2 times from start to end, defrosting repeatedly not only causes fluctuations in indoor temperature larger, and defrosting time is longer.
Utility model content
The main purpose of the utility model embodiment is to provide a kind of air-conditioner system, is intended to shorten the defrost time, and has avoided cross valve of the prior art commutation defrost and the large phenomenon of fluctuations in indoor temperature that causes.
For reaching above object, the utility model embodiment provides a kind of air-conditioner system, comprise: the compressor connecting by pipe arrangement successively, cross valve, outdoor heat exchanger, first throttle parts and indoor heat exchanger, it is characterized in that, also comprise the first switch block, triple valve, second section stream unit and control respectively the control device of the first switch block, triple valve work; When described the first switch block is connected to the exhaust outlet of described compressor and heats between the import of outdoor heat exchanger; Described triple valve is connected between cross valve and the gas returning port of compressor, and between an interface and the gas returning port of compressor of described second section stream unit connecting tee valve; Described control device comprises:
The first defrosting control module, when detecting defrost instruction, opens the first switch block, and air-conditioner is carried out to bypass defrosting, and stops defrost while exiting defrost condition reaching;
Defrost time logging modle, for recording defrost t10 running time that opens the first switch block, and judges whether t10 is more than or equal to the first preset time;
Temperature acquisition module, for when described the first defrosting control module is opened the first switch block, the temperature T 5 in outdoor heat exchanger exit when Real-time Obtaining heats, carries out for the first defrosting control module the judgement that bypass defrosting exits;
The second defrosting control module, for when t10 is more than or equal to the first preset time, controls triple valve and switches, so that the interface of cross valve is communicated with the gas returning port of compressor by triple valve and second section stream unit, air-conditioner is carried out to defrost.
Preferably, when the temperature T 5 in described outdoor heat exchanger exit is more than or equal to the first preset temperature, exit defrost.
Preferably, described defrost time logging modle also for: after controlling triple valve and switching, record switches defrost t11 running time after described triple valve; Described temperature acquisition module also for: after controlling triple valve and switching, the temperature T 5 in the exit of outdoor heat exchanger when Real-time Obtaining heats;
Described the second defrosting control module also for: when t11 is more than or equal to the second preset time, exit defrost; Or when this temperature T 5 is more than or equal to the first preset temperature, exit defrost.
Preferably, described temperature acquisition module also for, while detecting defrost instruction, obtain indoor environment temperature;
Described the second defrosting control module also for: when indoor environment temperature is less than the second preset temperature, switch described triple valve, so that the interface of cross valve is communicated with the gas returning port of compressor by triple valve and second section stream unit, air-conditioner carried out to defrost.
Preferably, described the second preset temperature is 0 ~ 20 degree.
Preferably, described control device also comprises:
Defrost detection module, whether after compressor start heating operation the 3rd preset time, detecting air-conditioner needs defrost;
Defrost initialization module, for when air-conditioner needs defrost, operational factor when the current operational factor of air-conditioner is set to defrost, and send defrost instruction.
Preferably, described defrost detection module is used for: after compressor start heating operation the 3rd preset time, the difference △ T=T30-T5 of the temperature T 30 of outdoor heat exchanger import department temperature T 5 in outdoor heat exchanger exit when heating when detection heats, and when △ T is more than or equal to the 3rd preset temperature, judgement air-conditioner needs defrost, otherwise judgement air-conditioner does not need defrost.
Preferably, described defrost initialization module is used for: detect outdoor environment temperature, and itself and the 4th preset temperature are compared; When outdoor environment temperature is more than or equal to the 4th preset temperature, compressor operating frequency, indoor fan move defrost parameter, running status when the auxiliary heat acquiescence of indoor electric heats; When outdoor environment temperature is less than the 4th preset temperature, compressor operating frequency, indoor fan move defrost parameter, the auxiliary hot enforced opening of indoor electric.
Preferably, described the first defrosting control module also for: when detecting defrost instruction, time delay 1 the 4th preset time, and after the 4th preset time arrives, open the first switch block, carries out defrost to air-conditioner.
Preferably, described the first preset time is 0 ~ 5 minute.
The utility model embodiment is when opening the first switch block air-conditioner is carried out to defrost, within detection time, whether defrost is clean in judgement, if defrost is unclean yet, pass through again switch three-way valve, make second section stream unit can limit the flowing velocity of refrigerant, extended the time of staying of refrigerant in outdoor heat exchanger, thereby further accelerated the defrost of this outdoor heat exchanger, shorten the defrost time, and avoided cross valve of the prior art commutation defrost and the large phenomenon of fluctuations in indoor temperature that causes.
Accompanying drawing explanation
Fig. 1 is the structural representation of air-conditioner in prior art;
Fig. 2 is refrigerant flow schematic diagram when air-conditioner carries out bypass defrosting in prior art;
Fig. 3 is the refrigerant flow schematic diagram of the utility model air-conditioner system under normal heating mode;
Fig. 4 is the high-level schematic functional block diagram of control device the first embodiment in the utility model air-conditioner system;
Fig. 5 is the refrigerant flow schematic diagram under the air-conditioner system defrost pattern shown in Fig. 3;
Fig. 6 is the high-level schematic functional block diagram of control device the second embodiment in the utility model air-conditioner system;
Fig. 7 is the schematic flow sheet of defrosting control method first embodiment of the utility model air-conditioner;
Fig. 8 is the schematic flow sheet of defrosting control method second embodiment of the utility model air-conditioner;
Fig. 9 is the schematic flow sheet of defrosting control method the 3rd embodiment of the utility model air-conditioner;
Figure 10 is the schematic flow sheet of defrosting control method the 4th embodiment of the utility model air-conditioner.
The realization of the utility model object, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
The specific embodiment
Below in conjunction with Figure of description and specific embodiment, further illustrate the technical solution of the utility model.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Main thought of the present utility model is two kinds of defrost streams are set, and in the running of air-conditioner, detect the operational factor of air-conditioner, and when selection to enter defrost, select which kind of defrost stream according to operational factor, when exits defrost.When the utility model can overcome existing air-conditioning system defrost, fluctuations in indoor temperature is larger, has greatly shortened the defrost time simultaneously.
Particularly, as shown in Figures 3 and 4, the utility model embodiment provides a kind of air-conditioner system the first embodiment.The air-conditioner system of this embodiment comprises: compressor 101, cross valve 102, outdoor heat exchanger 103, first throttle parts 104 and indoor heat exchanger 105, described compressor 101, cross valve 102, outdoor heat exchanger 103, first throttle parts 104 and indoor heat exchanger 105 are connected to form refrigerant circulation by pipe arrangement successively.Compressor 102 has exhaust outlet A1 and gas returning port A2; This cross valve 102 has four interfaces: interface a, interface b, interface c, interface d; Outdoor heat exchanger 103 has import B2 and the outlet B1 while heating.Air-conditioner system shown in Fig. 2 is under heating mode, through the exhaust outlet A1 of compressor 101, interface a, the interface d by cross valve 102 enters indoor heat exchanger 105 to refrigerant, then through first throttle parts 104, enter outdoor heat exchanger 103, after outlet B1 discharge by outdoor heat exchanger 103, last again by the interface b of cross valve 102, the gas returning port A2 that interface c is back to compressor 101, thereby form one, heat circulation.
Above-mentioned air-conditioner system also comprises the first switch block 108, triple valve 107, second section stream unit 106 and controls the first switch block 108 and the control device 200 of triple valve 107 work:
This first switch block 108 is magnetic valve, and its input is connected with the exhaust outlet A1 of compressor 101, and output import B2 of outdoor heat exchanger 103 when heating is connected.Triple valve 107 comprises e interface, f interface and g interface, and wherein e interface is connected with the c interface of cross valve 102, and f interface is directly connected with the gas returning port A2 of compressor 101, and g interface is connected with the gas returning port A2 of compressor 101 by second section stream unit 106.Above-mentioned control device 200 comprises:
The first defrosting control module 201, when detecting defrost instruction, opens the first switch block 108, and close chamber's external fan 109, carries out defrost to air-conditioner; When temperature T 5 is more than or equal to the first preset temperature T1, exit defrost;
Defrost time logging modle 202, opens the first switch block 108 for recording, defrost t10 running time of close chamber's external fan 109, and judge whether t10 is more than or equal to the first preset time;
Temperature acquisition module 203, for when the first defrosting control module 201 is opened the first switch block 108, the temperature T 5 when outdoor heat exchanger 103 exports B1 when Real-time Obtaining heats;
The second defrosting control module 204, while being more than or equal to the first preset time for t10, control triple valve 107 and switch, so that the interface of cross valve 102 is communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106, air-conditioner is carried out to defrost.
The first defrosting control module 201, when detecting defrost instruction, is opened the first switch block 108, and close chamber's external fan 109.Meanwhile, defrost time logging modle 202 will start to record its defrost running time when the first defrosting control module 201 is opened the first switch block 108, and this defrost t10 running time and the first preset time t1 are compared.When t10 >=t1, control triple valve 107 and switch, so that the interface c of cross valve 102 is communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106, air-conditioner is carried out to defrost; When t10 < t1, do not process, by former defrost mode, carry out defrost.In the present embodiment, this defrost time logging modle 202 is a timer, and the threshold value t1 of this timer is set, and in the utility model embodiment, this threshold value t1 is 0 ~ 5 minute, is preferably 2 minutes.When the time that timer is counted reaches threshold value t1, produce triggering signal, to trigger the second defrosting control module 204 switch three-way valves 107, so that the c interface of cross valve 102 is communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106, air-conditioner is carried out to defrost.Now, as shown in Figure 5, after the exhaust outlet A1 discharge of this refrigerant by compressor 101, a part of refrigerant enters indoor heat exchanger 105 through interface a, the interface d of cross valve 102, and then enters outdoor heat exchanger 103 by first throttle parts 104; Another part refrigerant directly enters outdoor heat exchanger 103 due to the conducting of the first switch block 108.Refrigerant through outdoor heat exchanger 103 is flowed out by B1 mouth, and by interface b, the interface c of cross valve 102, the interface e of triple valve 107, interface g, process second section stream unit 106 is back to the gas returning port A2 of compressor 101.
In addition, when the first defrosting control module 201 is opened the first switch block 108, the temperature T 5 at temperature acquisition module 203 outlet B1 place of outdoor heat exchanger 103 when detecting heating operation, this temperature T 5 can detect by being arranged on the temperature sensor 111 at the outlet B1 place of outdoor heat exchanger 103, then sends it to temperature acquisition module 203.This temperature sensor 111, by the temperature at the outlet B1 place of real-time sensing chamber external heat exchanger 103, obtains for temperature acquisition module 203.When the accessed temperature T 5 of this temperature acquisition module 203 is more than or equal to the first preset temperature T1, exit defrost, close the first switch block 108, opening chamber's external fan 109, enters normal heating mode.When the accessed temperature of temperature acquisition module 203 is less than the first preset temperature T1, continue to obtain the temperature at the outlet B1 place of outdoor heat exchanger 103, to judge whether exiting defrost.Until defrost t10 running time recording is more than or equal to the first preset time t1, the second defrosting control module 204 is controlled the switching of triple valve 107, so that the interface c of cross valve 102 is communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106, air-conditioner is carried out to defrost.Be understandable that, said temperature acquisition module 203 can be same parts with temperature sensor 111.In the present embodiment, this first preset temperature T1 is 0 ~ 10 degree, is preferably 2 degree.
Be understandable that, above-mentioned the first defrosting control module 201, when control air-conditioner carries out bypass defrosting, also can only open the first switch block 108, and outdoor fan 109 is failure to actuate.
The utility model embodiment is passing through to open the first switch block 108, when 109 pairs of air-conditioners of close chamber's external fan carry out defrost, in detection time t1, whether defrost is clean in judgement, if defrost is unclean yet, again by switch three-way valve 107, make second section stream unit 106 can limit the flowing velocity of refrigerant, extended the time of staying of refrigerant in outdoor heat exchanger 103, thereby further accelerated the defrost of this outdoor heat exchanger 103, shortened the defrost time, and avoided cross valve of the prior art commutation defrost and the large phenomenon of fluctuations in indoor temperature that causes.
Further, in above-mentioned control device 200:
Described defrost time logging modle 202 also for: after controlling triple valve 107 and switching, record switches defrost t11 running time after described triple valve 107;
Described temperature acquisition module 203 also for: after controlling triple valve 107 and switching, the temperature T 5 at the outlet B1 place of outdoor heat exchanger 103 when Real-time Obtaining heats;
Described the second defrosting control module 206 also for: when t11 is less than the second preset time t2, when this temperature T 5 is less than the first preset temperature T1, the state that the c interface that keeps cross valve 102 is communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106.
When keeping the first state that switch block 108 is opened, outdoor fan 109 is closed, also switch after described triple valve 107 simultaneously, will again record this defrost t11 running time.And by this time t11 and the second preset time t2 comparison, if when time t11 is more than or equal to time t2, exit defrost; Otherwise the state that the c interface that continues maintenance cross valve 102 is communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106.In addition, when keeping the first state that switch block 108 is opened, outdoor fan 109 is closed, also switch after described triple valve 107 simultaneously, the temperature T 5 at the outlet B1 place of outdoor heat exchanger 103 while can also Real-time Obtaining heating, and by itself and the first preset temperature T1 comparison, when if temperature T 5 is more than or equal to temperature T 1, exit defrost; Otherwise the state that the c interface that continues maintenance cross valve 102 is communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106.This exits defrost and refers to and close the first switch block 108, opening chamber's external fan 109, and switch three-way valve 107, so that the c interface of cross valve 102 is directly communicated with the gas returning port A2 of compressor 101 by triple valve 107, recovers normal heating mode.In the present embodiment, this second preset time t2 is 5 ~ 15 minutes, is preferably 10 minutes.
The utility model embodiment, by the temperature at defrost time or while heating outdoor heat exchanger 103 outlet B1 places, judges whether to exit defrost, if both one of satisfiedly can exit defrost.Thereby realized defrost being detected and can exit in time defrost when clean, also avoided defrost overlong time and affected air-conditioner moving normally.
Based on above-mentioned the second embodiment, the utility model also provides air-conditioner system the second embodiment.In the control device of the air-conditioner system of this embodiment:
Described temperature acquisition module 203 also for, when detecting defrost instruction, obtain indoor environment temperature;
Described the second defrosting control module 204 also for, when indoor environment temperature is less than the second preset temperature T2, switch described triple valve 107, the c interface of cross valve 102 is communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106, air-conditioner is carried out to defrost.
When detecting defrost instruction, temperature acquisition module 203 is also by Real-time Obtaining indoor environment temperature, and by itself and the second preset temperature T2 comparison.When obtained indoor environment temperature is less than the second preset temperature T2, when controlling the closing of unlatching, outdoor fan 109 of the first switch block 108 according to defrost instruction in the first defrosting control module 201, the second defrosting control module 204 also will be switched described triple valve 107, the c interface of cross valve 102 is communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106, air-conditioner is carried out to defrost.In the present embodiment, this second preset temperature T2 is 0 ~ 20 degree, is preferably 0 degree.When obtained indoor environment temperature is more than or equal to the second preset temperature, the second defrosting control module 204 is failure to actuate, and the first defrosting control module 201 is controlled the closing of unlatching, outdoor fan 109 of the first switch block 108 according to defrost instruction, air-conditioner is carried out to defrost.
The utility model embodiment, by when air-conditioner is carried out to defrost, according to the comparative result of indoor environment temperature and the second preset temperature, selects corresponding defrost stream to carry out defrost to air-conditioner, has further accelerated defrost speed, has shortened the defrost time.
Further, with reference to Fig. 6, based on the first or second embodiment, the 3rd embodiment of the utility model air-conditioner system has also been proposed.Control device in this embodiment also comprises:
Defrost detection module 205, starts after heating operation the 3rd preset time for compressor 101, and whether detect air-conditioner needs defrost;
Defrost initialization module 206, for when air-conditioner needs defrost, operational factor when the current operational factor of air-conditioner is set to defrost, and send defrost instruction.
Particularly, said temperature acquisition module 203 also starts after heating operation the 3rd preset time t3 for: compressor 101, the temperature T 5 at the temperature T 30 of obtaining outdoor heat exchanger 103 import B2 while heating outdoor heat exchanger 103 outlet B1 places when heating.The difference △ T=T30-T5 of the temperature T 30 at 205 counting chamber external heat exchangers of above-mentioned defrost detection module, 103 import B2 places temperature T 5 at outdoor heat exchanger 103 outlet B1 places when heating, and by △ T and the 3rd preset temperature T3 comparison; When △ T is more than or equal to the 3rd preset temperature T3, judgement air-conditioner needs defrost, otherwise judgement air-conditioner does not need defrost.
The minimum of the temperature at the import B2 place of outdoor heat exchanger 103 when said temperature T30 refers to heating of obtaining when compressor 101 starts in operation a period of time.This temperature T 30 can detect acquisition by being arranged on the temperature sensor 110 at the import B2 place of outdoor heat exchanger 103 while heating.T5 refers to the temperature of outdoor heat exchanger 103 outlet B1 while heating.This temperature T 5 can detect acquisition by being arranged on the temperature sensor 111 at the outlet B1 place of outdoor heat exchanger 103 while heating.Defrost detection module 205 starts after heating operation the 3rd preset time t3 at compressor 101, by temperature acquisition module 203, obtain temperature T 30 and temperature T 5, then the temperature difference △ T of accounting temperature T30 and temperature T 5, and by this temperature difference △ T and the 3rd preset temperature T3 comparison.When temperature difference △ T is more than or equal to the 3rd preset temperature T3, judge that air-conditioner needs defrost, otherwise judgement air-conditioner does not need defrost.In the present embodiment, the 3rd preset temperature T3 is 0 ~ 15 degree, is preferably 5 degree.
Said temperature acquisition module 203 also for: at defrost detection module 205, detect while needing defrost, obtain outdoor environment temperature.Above-mentioned defrost initialization module 206 for: the outdoor environment temperature that temperature acquisition module 203 is obtained and the 4th preset temperature compare; When outdoor environment temperature is more than or equal to the 4th preset temperature T4, compressor 101 running frequencies, indoor fan 112 move defrost parameters, running status when auxiliary hot 113 acquiescences of indoor electric heat; When outdoor environment temperature is less than the 4th preset temperature T4, compressor 101 running frequencies, indoor fan 112 move defrost parameters, auxiliary hot 113 enforced openings of indoor electric.In the present embodiment, the 4th preset temperature T4 is-2 ~ 5 degree, is preferably 0 degree.Be understandable that, when exiting defrost, the operational factor of air-conditioner will return to normal operational factor from defrost parameter, normally to heat.
Further, in the above-mentioned first or second embodiment, after the operational factor of the first defrosting control module 201 when the operational factor of air-conditioner is set to defrost, by after time delay the 4th preset time t4, open the first switch block 108, close chamber's external fan 109, to carry out defrost to air-conditioner.In the present embodiment, the 4th preset time t4 is 0 ~ 30 second, is preferably 5 seconds, after guaranteeing that the operational factor of air-conditioner arranges successfully, then carries out defrost.
With reference to Fig. 7, defrosting control method first embodiment of a kind of air-conditioner of the utility model has been proposed.Based on foregoing air-conditioner system, the defrosting control method of the air-conditioner of this embodiment comprises the following steps:
Step S110, while detecting defrost instruction, open the first switch block, close chamber's external fan, carries out defrost to air-conditioner, records the time t10 of this defrost simultaneously;
When the first switch block 108, open so that air-conditioner is carried out to defrost, start timer, record the time t10 of this defrost.
Step S120, obtain the temperature T 5 at the outlet B1 place of outdoor heat exchanger while heating, and by this temperature T 5 and the first preset temperature T1 comparison;
In the process of above-mentioned defrost, the temperature T 5 at the outlet B1 place of outdoor heat exchanger 103 during by detection heating operation, this temperature T 5 can detect by being arranged on the temperature sensor 111 at the outlet B1 place of outdoor heat exchanger 103.
Step S130, when temperature T 5 is more than or equal to the first preset temperature T1, exit defrost.
When temperature T 5 is more than or equal to the first preset temperature T1, exit defrost, close the first switch block 108, opening chamber's external fan 109, enters normal heating mode.When temperature T 5 is less than the first preset temperature T1, continue keeps the closing of unlatching, outdoor fan 109 of the first switch block 108, and obtain the temperature T 5 at the outlet B1 place of outdoor heat exchanger 103, to judge whether exiting defrost.
Step S140, when temperature T 5 is less than the first preset temperature T1, judge whether t10 is more than or equal to the first preset time t1; When t10 is more than or equal to the first preset time, proceed to step S150; When t10 is less than the first preset time t1, proceed to step S120;
Step S150, maintenance the first switch block 108 are opened, outdoor fan 109 is closed, switch described triple valve 107 simultaneously, the c interface of cross valve 102 is communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106, air-conditioner is carried out to defrost.
When the time that timer is counted reaches the first preset time t1, produce triggering signal, to trigger the switching of triple valve 107, so that the c interface of cross valve 102 is communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106, air-conditioner is carried out to defrost.Now, as shown in Figure 5, after the exhaust outlet A1 discharge of this refrigerant by compressor 101, a part of refrigerant enters indoor heat exchanger 105 through interface a, the interface d of cross valve 102, and then enters outdoor heat exchanger 103 by first throttle parts 104; Another part refrigerant directly enters outdoor heat exchanger 103 due to the conducting of the first switch block 108.Refrigerant through outdoor heat exchanger 103 is flowed out by B1 mouth, and by interface b, the interface c of cross valve 102, the interface e of triple valve 107, interface g, process second section stream unit 106 is back to the gas returning port A2 of compressor 101.
When the time that timer is counted does not reach the first preset time t1, switch three-way valve 107 not, continues to keep the first state that switch block 108 is opened, outdoor fan 109 is closed.Detect the temperature T 5 at the outlet B1 place of outdoor heat exchanger 103 while heating simultaneously, and by this temperature T 5 and the first preset temperature T1 comparison, to judge whether exiting defrost.
The utility model embodiment is when opening the first switch block 108,109 pairs of air-conditioners of close chamber's external fan and carry out defrost, in detection time t1, whether defrost is clean, if defrost is unclean yet, again by switch three-way valve 107, make second section stream unit 106 can limit the flowing velocity of refrigerant, extended the time of staying of refrigerant in outdoor heat exchanger 103, thereby further accelerated the defrost of this outdoor heat exchanger 103, shorten the defrost time, and avoided cross valve of the prior art commutation defrost and the large phenomenon of fluctuations in indoor temperature that causes.
Further, with reference to Fig. 8, defrosting control method second embodiment of the utility model air-conditioner is proposed.In this embodiment, after the step S150 of above-described embodiment, also comprise:
Step S160, record switch the defrost time t11 after described triple valve;
Step S170, judge whether t11 is more than or equal to the second preset time t2; When t11 is more than or equal to the second preset time t2, proceed to step S200; When t11 is less than the second preset time t2, return to step S150;
When keeping the first state that switch block 108 is opened, outdoor fan 109 is closed, also switch after described triple valve 107 simultaneously, will record the time t11 of this defrost.And by this time t11 and the second preset time t2 comparison, if when time t11 is more than or equal to time t2, exit defrost; Otherwise the state that the c interface that continues maintenance cross valve 102 is communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106.
The temperature T 5 of the outlet B1 of outdoor heat exchanger 103 when step S180, detection heat;
Step S190, judge whether temperature T 5 is more than or equal to the first preset temperature T1; When this temperature T 5 is more than or equal to the first preset temperature T1, proceed to step S200; When temperature T 5 is less than the first preset temperature T1, return to step S150;
When keeping the first state that switch block 108 is opened, outdoor fan 109 is closed, also switch after described triple valve 107 simultaneously, the temperature T 5 at the outlet B1 place of outdoor heat exchanger 103 while can also Real-time Obtaining heating, and by itself and the first preset temperature T1 comparison, when if temperature T 5 is more than or equal to temperature T 1, exit defrost; Otherwise the state that the c interface that continues maintenance cross valve 102 is communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106.
Step S200, exit defrost.
This exits defrost and refers to and close the first switch block 108, opening chamber's external fan 109, and switch three-way valve 107, so that the c interface of cross valve 102 is directly communicated with the gas returning port A2 of compressor 101 by triple valve 107, recovers normal heating mode.
The utility model embodiment, by the temperature at defrost time or while heating outdoor heat exchanger 103 import B2 places, judges whether to exit defrost, if both one of meet and can exit defrost.Thereby realized defrost being detected and can exit in time defrost when clean, also avoided defrost time course and affected air-conditioner moving normally.
Further, with reference to Fig. 9, defrosting control method the 3rd embodiment of the utility model air-conditioner is proposed.In this embodiment, the defrosting control method of air-conditioner comprises:
Step S210, while detecting defrost instruction, detect indoor environment temperature, and judge whether this indoor environment temperature is more than or equal to the second preset temperature T2; When indoor environment temperature is more than or equal to the second preset temperature T2, perform step S220; When indoor environment temperature is less than the second preset temperature T2, perform step S260;
When detecting defrost instruction, by Real-time Obtaining indoor environment temperature, and by itself and the second preset temperature T2 comparison.
Step S220, unlatching the first switch block, close chamber's external fan, carries out defrost to air-conditioner, records the time t10 of this defrost simultaneously;
When obtained indoor environment temperature is more than or equal to the second preset temperature, the second defrosting control module 204 is failure to actuate, and the first defrosting control module 201 is controlled the closing of unlatching, outdoor fan 109 of the first switch blocks 108, and air-conditioner is carried out to defrost.
Step S230, obtain the temperature T 5 at the outlet B1 place of outdoor heat exchanger while heating, and by this temperature T 5 and the first preset temperature T1 comparison;
In the first defrosting control module 201, carry out in the process of defrosting control, will obtain the temperature T 5 at the outlet B1 place of outdoor heat exchanger while heating, and this temperature T 5 and the first preset temperature T1 are compared, to judge whether exiting defrost.
Step S240, when temperature T 5 is more than or equal to the first preset temperature T1, exit defrost;
Step S250, when temperature T 5 is less than the first preset temperature T1, judge whether t10 is more than or equal to the first preset time t1; When t10 is more than or equal to the first preset time, proceed to step S260; When t10 is less than the first preset time t1, proceed to step S230;
When temperature T 5 is less than the first preset temperature T1, whether the defrost time t10 that judgement is recorded is more than or equal to the first preset time t1.
Step S260, maintenance the first switch block 108 are opened, outdoor fan 109 is closed, switch described triple valve 107 simultaneously, the c interface of cross valve 102 is communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106, air-conditioner is carried out to defrost.
When judgement the first defrosting control module 201 while carrying out defrosting control the defrost time, t10 was more than or equal to the first preset time t1 time, the second defrosting control module 204 actions, control triple valve 107 and switch.In addition, when detecting defrost instruction, not only the first defrosting control module 201 will be controlled the closing of unlatching, outdoor fan 109 of the first switch block 108, the second defrosting control module 204 also will be switched described triple valve 107 simultaneously, the c interface of cross valve 102 is communicated with the gas returning port A2 of compressor 101 by triple valve 107 and second section stream unit 106, air-conditioner is carried out to defrost.
The utility model embodiment, by when air-conditioner is carried out to defrost, according to the comparative result of indoor environment temperature and the second preset temperature T2, selects corresponding defrost stream to carry out defrost to air-conditioner, has further accelerated defrost speed, has shortened the defrost time.
Further, with reference to Figure 10, defrosting control method the 4th embodiment of the utility model air-conditioner is proposed.In this embodiment, before step S110, also comprise in the above-described embodiments:
Whether after step S100a, compressor start heating operation the 3rd preset time, detecting air-conditioner needs defrost;
One timer is set, and this timer starts according to corresponding triggering, for recording the running time of air-conditioner.For example, when compressor 101 starts heating operation, start timer, the running time of air-conditioner after recording compressed machine 101 starts.Machine 101 to be compressed starts after the 3rd preset time t3, and whether 205 of defrost detection modules detect air-conditioner needs defrost.The setting of the 3rd preset time t3 is that air-conditioner carries out normal operating condition for making after compressor start.Whether when air-conditioner not detected and need defrost, continuing monitoring air-conditioner needs defrost.
Step S100b, when air-conditioner needs defrost, operational factor when the current operational factor of air-conditioner is set to defrost;
When air-conditioner being detected and need defrost, operational factor when first the current operational factor of air-conditioner is set to defrost, for example the running frequency of compressor is, state of the rotating speed of indoor fan, the auxiliary heat of indoor electric etc.
Further, step S100a in above-described embodiment is specially: compressor 101 starts after heating operation the first preset time, the difference △ T=T30-T5 of the temperature T 30 of outdoor heat exchanger 103 import B2 temperature T 5 of outdoor heat exchanger 103 outlet B1 when heating when detection heats, and when △ T is more than or equal to the 3rd preset temperature T3, judgement air-conditioner needs defrost, otherwise judgement air-conditioner does not need defrost.
The minimum of the temperature of the import B2 of outdoor heat exchanger 103 when said temperature T30 refers to heating of obtaining when compressor 101 starts in operation a period of time.This temperature T 30 can detect acquisition by being arranged on the temperature sensor 110 at the import B2 place of outdoor heat exchanger 103 while heating.T5 refers to the temperature of outdoor heat exchanger 103 outlet B1 while heating.This temperature T 5 can detect acquisition by being arranged on the temperature sensor 111 at the outlet B1 place of outdoor heat exchanger 103 while heating.At compressor 101, start after heating operation the first preset times, obtain temperature T 30 and temperature T 5, the temperature difference △ T of accounting temperature T30 and temperature T 5 then, and by this temperature difference △ T and the 3rd preset temperature T3 comparison.When temperature difference △ T is more than or equal to the 3rd preset temperature T3, judge that air-conditioner needs defrost, otherwise judgement air-conditioner does not need defrost.
Further, the step S100b in above-described embodiment specifically comprises:
A, detection outdoor environment temperature, and itself and the 4th preset temperature T4 are compared;
B, when outdoor environment temperature is more than or equal to the 4th preset temperature T4, compressor 101 running frequencies, indoor fan 112 operation defrost parameters, running status when auxiliary hot 113 acquiescences of indoor electric heat;
C, when outdoor environment temperature is less than the 4th preset temperature T4, compressor 101 running frequencies, indoor fan 112 operation defrost parameters, auxiliary hot 113 enforced openings of indoor electric.
Be understandable that, when exiting defrost, the operational factor of air-conditioner will return to normal operational factor from defrost parameter, normally to heat.
Further, above-mentioned while detecting defrost instruction, also by time delay 1 the 4th preset time t4, and after the 4th preset time t4 arrives, open the first switch block, close chamber's external fan, carries out defrost to air-conditioner.
Further, in above-mentioned the first embodiment, after the operational factor of the first defrosting control module 201 when the operational factor of air-conditioner is set to defrost, by after time delay the 4th preset time t4, open the first switch block 108, close chamber's external fan 109, to carry out defrost to air-conditioner again.In the present embodiment, the setting of the 4th preset time, after guaranteeing that the operational factor of air-conditioner arranges successfully, then carries out defrost.
Above-mentioned the utility model embodiment sequence number, just to describing, does not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that above-described embodiment method can add essential general hardware platform by software and realize, can certainly pass through hardware, but in a lot of situation, the former is better embodiment.Understanding based on such, the part that the technical solution of the utility model contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in a storage medium (as ROM/RAM, magnetic disc, CD), comprise that some instructions are with so that a station terminal equipment (can be mobile phone, computer, server, or the network equipment etc.) carry out the method described in each embodiment of the utility model.
The foregoing is only preferred embodiment of the present utility model; not thereby limit its scope of the claims; every equivalent structure or conversion of equivalent flow process that utilizes the utility model description and accompanying drawing content to do; directly or indirectly be used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (1)
1. an air-conditioner system, comprise: the compressor connecting by pipe arrangement successively, cross valve, outdoor heat exchanger, first throttle parts and indoor heat exchanger, it is characterized in that, also comprise the first switch block, triple valve, second section stream unit and control respectively the control device of the first switch block, triple valve work; When described the first switch block is connected to the exhaust outlet of described compressor and heats between the import of outdoor heat exchanger; Described triple valve is connected between cross valve and the gas returning port of compressor, and between an interface and the gas returning port of compressor of described second section stream unit connecting tee valve; Described control device comprises:
The first defrosting control module, when detecting defrost instruction, opens the first switch block, and air-conditioner is carried out to bypass defrosting, and stops defrost while exiting defrost condition reaching;
Defrost time logging modle, for recording defrost t10 running time that opens the first switch block, and judges whether t10 is more than or equal to the first preset time;
Temperature acquisition module, for when described the first defrosting control module is opened the first switch block, the temperature T 5 in outdoor heat exchanger exit when Real-time Obtaining heats, carries out for the first defrosting control module the judgement that bypass defrosting exits;
The second defrosting control module, for when t10 is more than or equal to the first preset time, controls triple valve and switches, so that the interface of cross valve is communicated with the gas returning port of compressor by triple valve and second section stream unit, air-conditioner is carried out to defrost.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320534927.4U CN203928271U (en) | 2013-08-29 | 2013-08-29 | Air-conditioner system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320534927.4U CN203928271U (en) | 2013-08-29 | 2013-08-29 | Air-conditioner system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203928271U true CN203928271U (en) | 2014-11-05 |
Family
ID=51824074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320534927.4U Withdrawn - After Issue CN203928271U (en) | 2013-08-29 | 2013-08-29 | Air-conditioner system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203928271U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471203A (en) * | 2013-08-29 | 2013-12-25 | 广东美的制冷设备有限公司 | Air conditioner defrosting control method and air conditioner system |
| CN110736212A (en) * | 2019-09-27 | 2020-01-31 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN110736210A (en) * | 2019-09-26 | 2020-01-31 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
-
2013
- 2013-08-29 CN CN201320534927.4U patent/CN203928271U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471203A (en) * | 2013-08-29 | 2013-12-25 | 广东美的制冷设备有限公司 | Air conditioner defrosting control method and air conditioner system |
| CN103471203B (en) * | 2013-08-29 | 2016-04-06 | 广东美的制冷设备有限公司 | The defrosting control method of air-conditioner and air-conditioner system |
| CN110736210A (en) * | 2019-09-26 | 2020-01-31 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN110736212A (en) * | 2019-09-27 | 2020-01-31 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN110736212B (en) * | 2019-09-27 | 2022-04-19 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103471203B (en) | The defrosting control method of air-conditioner and air-conditioner system | |
| CN103486783B (en) | Air-conditioner system and defrosting control method thereof | |
| CN104236004B (en) | Defrosting control method and device for heat pump system | |
| CN109323369A (en) | Air-conditioning and its defrosting method and device | |
| CN107504640A (en) | Air-conditioning system, air conditioner and refrigerant recovering control method | |
| CN106091505A (en) | The defrosting control method of air-conditioner, defrosting control device and air-conditioner | |
| CN105066377A (en) | Defrosting control method and device of air conditioner and air conditioner | |
| CN102032730A (en) | Hot-gas bypass defrosting system for variable-frequency air conditioner | |
| CN105135628B (en) | The defrosting control method of air conditioner and air conditioner | |
| CN104791943B (en) | Air-conditioning system and its control method, the outdoor unit of air-conditioning system | |
| CN203928271U (en) | Air-conditioner system | |
| CN104006449A (en) | Air-conditioner and control method thereof | |
| CN109631388A (en) | A kind of air-conditioning heating four-way valve commutation exception control method, apparatus and air conditioner | |
| CN103792103B (en) | The detection method of VRF Air Conditioning System | |
| CN103411340A (en) | Outdoor heat exchanging device and defrosting method thereof | |
| CN103398516A (en) | Air conditioner pressure maintaining start-up system and control method of air conditioner pressure maintaining start-up system | |
| CN103940163A (en) | Defrosting control method and device | |
| CN103363707A (en) | Heat pump type air conditioning device | |
| CN110542149A (en) | defrosting control method for air conditioning system and air conditioning system | |
| CN105402936A (en) | Air conditioner water heater and refrigerant leakage detecting method and device of air conditioner water heater | |
| CN107490156B (en) | Three control air-conditionings and its method for diagnosing faults | |
| CN110529978A (en) | A kind of control method, device and air conditioner reducing condenser frosting rate | |
| CN112229097A (en) | Air source heat pump system with defrosting function and operation method thereof | |
| CN102230850B (en) | Method and system for on-line test on outer machine of wind-cooling freezer | |
| CN203550128U (en) | Air conditioner system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141105 Effective date of abandoning: 20160406 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |