CN103292427A - Air conditioner - Google Patents
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- CN103292427A CN103292427A CN201310053209XA CN201310053209A CN103292427A CN 103292427 A CN103292427 A CN 103292427A CN 201310053209X A CN201310053209X A CN 201310053209XA CN 201310053209 A CN201310053209 A CN 201310053209A CN 103292427 A CN103292427 A CN 103292427A
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Abstract
An air conditioner is disclosed. The air conditioner is provided with multiple indoor machines and can adequately adjust heat exchange quantities of the indoor machines in a set state-independent manner. The air conditioner is connected with an outdoor machine and multiple outdoors through a liquid connection pipe and an air connection pipe, wherein the outdoor machine is provided with a compressor, a four-way valve, an outdoor heat exchanger, an outdoor expansion device, an outdoor air blower, and an external air temperature sensor; the multiple outdoors are provided with indoor expansion devices, indoor heat exchangers, and indoor air blowers. The air conditioner is characterized in that a first temperature sensors is arranged for measuring temperature of the liquid pipe at the outdoor machine side, second temperature sensors are arranged at indoor heat exchangers of all the indoor machines and are used for measuring temperature of outlet openings, and the air conditioner is provided with a control part which is used for comparing temperature measured by the above two temperature sensors in heating operation; as for the indoor machine of which the difference value surpasses a certain value, the valve opening degree of the indoor expansion device is set at a specified value A.
Description
Technical field
The present invention relates to a kind of air conditioner.
Background technology
Existence has connected the air conditioner of the multiple of a plurality of indoor sets with respect to 1 off-premises station.When the heating operation of this air conditioner, as the means that the heat exchange amount of each indoor set is adjusted, the heat that existence utilizes indoor expansion valve to carry out is surrendered the cooling control of making a slip of the tongue.This control is controlled to be degree of supercooling necessarily, so that from discharging saturation temperature and the indoor heat converter outlet temperature that pressure gauge that the pressure sensor of side detected calculates and be in the suitable scope by being located at compressor.
In addition, existed in the past be disclosed in patent documentation 1(TOHKEMY 2011-7482 communique) such air attemperation apparatus.This air attemperation apparatus has the refrigerant loop that compressor, indoor heat converter, indoor expansion valve and outdoor heat converter are connected successively, when the mode that becomes the target degree of supercooling with the degree of supercooling of the cold-producing medium of the outlet of indoor heat converter when heating operation is controlled, be increased under the situation that is near the target degree of supercooling change beginning capacity the maximum at the working capacity of compressor, by increasing the target degree of supercooling, enlarge the control range of heating capacity.
[prior art document]
[patent documentation]
Patent documentation 1: TOHKEMY 2011-7482 communique
Summary of the invention
Invent problem to be solved
Yet, air conditioner for above-mentioned multiple, the situation that a plurality of indoor sets are arranged on various places is many, when being set, the place sees when breaking away from from the scope of regulation from off-premises station at aspects such as difference of height, piping lengths, because the connection status between off-premises station and each indoor set (pipe arrangement resistance etc.) is inequality, so, can not suitably control the degree of supercooling of cold-producing medium of outlet of the indoor heat converter of each indoor set, this problem of heat exchange amount of each indoor set can not be suitably adjusted in existence.In above-mentioned prior art, do not consider about the problems referred to above point.
The object of the present invention is to provide a kind of air conditioner, possess the air conditioner of a plurality of indoor sets, can with state be set irrespectively suitably regulate the heat exchange amount of indoor set.
In order to solve the technological means of problem
The present invention is in order to solve above-mentioned problem, a kind of air conditioner is provided, and this air conditioner is connected with a plurality of indoor sets that possess indoor expansion gear, indoor heat converter, indoor blower by the off-premises station that liquid connecting pipings and gas connecting pipings will possess compressor, cross valve, outdoor heat converter, outdoor expansion gear, outdoor draft fan and outer temperature degree sensor; This air conditioner is characterised in that:
Be provided with first temperature sensor that the liquid pipe arrangement temperature of above-mentioned outdoor pusher side is measured, and be provided with second temperature sensor that outlet temperature is measured at the indoor heat converter of above-mentioned each indoor set; Possess control part, this control part compares the temperature that the above-mentioned two temperatures sensor in the heating operation determines, and the indoor set that its difference has been surpassed certain value is controlled in the mode of the valve opening of indoor expansion gear being opened setting A.
In addition, be characterised in that, in above-mentioned air conditioner, by above-mentioned control part, determine the setting A of the valve opening of above-mentioned indoor expansion gear according to the valve opening of predefined outdoor expansion gear.
In addition, be characterised in that, in above-mentioned air conditioner, by above-mentioned control part, use outer temperature degree and compressor frequency to preestablish the valve opening of above-mentioned outdoor expansion gear.
In addition, be characterised in that, in above-mentioned air conditioner, by above-mentioned control part, provide the setting A of the valve opening of above-mentioned indoor expansion gear by the inlet temperature according to each indoor set, suitably keep the heat exchange amount of indoor heat converter.
In addition, be characterised in that in above-mentioned air conditioner, the initial value of the valve opening of above-mentioned indoor expansion gear decides corresponding to the connection status of indoor set and off-premises station.
In addition, be characterised in that, in above-mentioned air conditioner, decided the controlled indoor set of valve opening of indoor expansion gear according to the heat exchanger degree of supercooling of the saturation temperature of obtaining from the value of measuring of high-pressure and indoor heat converter by above-mentioned control part.
The effect of invention
According to the present invention, can provide the air conditioner that irrespectively suitably keeps the heat exchange amount of indoor heat converter with the state that arranges (difference of height, piping length etc.) of the indoor set of air conditioner.
Description of drawings
Fig. 1 is the refrigerating circulation system figure of the air conditioner of the embodiment of the invention.
Fig. 2 is the device structure block diagram of the air conditioner of the embodiment of the invention.
Fig. 3 is the control flow chart of the indoor expansion gear of the embodiment of the invention.
Fig. 4 is the key diagram of variation of valve opening of the outdoor and indoor expansion gear of the expression embodiment of the invention.
The specific embodiment
Use accompanying drawing that embodiments of the present invention are described.Same Reference numeral among each figure is represented same thing or suitable thing.
Use Fig. 1 that the air conditioner of embodiments of the present invention is described.Fig. 1 is the example of refrigerating circulation system figure of the air conditioner of present embodiment.Air conditioner connects 2 off- premises station 8a, 8b and 3 indoor set 12a, 12b, 12c constitute the control part that interior dress is controlled them (aftermentioned) by gas pipe arrangement 13 and liquid pipe arrangement 14.Here, the connection platform number of off- premises station 8a, 8b can be made as 1 platform at the most, indoor set 12a, and the connection platform number of 12b, 13c is also so long as get final product more than 2.In addition, the subscript of the Latin alphabet that has marked in Reference numeral 12a～12c etc. is used inferior the omission sometimes of the situation of each parts of general name ground expression.
Each off-premises station 8, same with the off-premises station of the air conditioner of standard, by compressor 1, oil eliminator 2, outdoor expansion gear (outdoor expansion valve) 4, outdoor heat converter 5, cross valve 3, reservoir 7, the pressure fan 6 of capacity variable type and the control part 20(aftermentioned that they are controlled) constitute.And, possess temperature sensor 31 on outer temperature degree sensor 30, the compressor, pipe arrangement temperature sensor (first temperature sensor) 32, high-pressure sensor 33, low-pressure sensor 34.Pipe arrangement temperature sensor 32 is measured the temperature of the liquid pipe arrangement 14 of off-premises station 8 sides.Liquid pipe arrangement 14 is because the liquid refrigerant of the outlet of the indoor heat converter 9 of the indoor set of just working 12 converges, so the average temperature of cardinal principle of each liquid refrigerant that has been converged by 32 pairs of pipe arrangement temperature sensors is measured.
Each indoor set 12 is by indoor heat converter 9, indoor expansion gear (indoor expansion valve) 11, air-supply arrangement 10 and control part 25(aftermentioned that they are controlled) constitute.And, possess inlet temperature sensor 35, blow out temperature sensor 36, flue temperature sensor 37, liquid line temperature sensor (second temperature sensor) 38.Liquid line temperature sensor 38a～38c measures other outlet temperature of each indoor heat converter 9a～9c.
In the heating operation of this air conditioner, the gas refrigerant of having discharged from compressor 1 is supplied to the indoor side heat exchanger 9 of indoor set 12 by oil eliminator 2, cross valve 3, gas pipe arrangement 13.Gas refrigerant is condensed in the face of room air heats one side at indoor side heat exchanger 9 one, and chilled liquid refrigerant is back to off-premises station by indoor expansion gear 11, liquid pipe arrangement 14, the outer expansion gear 4 of inlet chamber.Outdoor expansion gear 4 can be set aperture decrease arbitrarily, after with the aperture decrease of stipulating cold-producing medium being reduced pressure it is sent to outdoor heat converter 5.Liquid refrigerant evaporates in outdoor heat converter 5, is adjusted to appropriate suction mass dryness fraction by reservoir 7 again, is back to the suction pipe arrangement of compressor 1.
The device structure block diagram of the expression embodiment of the invention in Fig. 2.Compressor 1, outdoor expansion gear 4, pressure fan 6, the cross valve 3 of lift-launch in off-premises station 8 controlled respectively by off-premises station control part 20.As control information, use the measured value of temperature sensor 31, pipe arrangement temperature sensor 32, high-pressure sensor 33, low-pressure sensor 34 on outer temperature degree sensor 30, the compressor.Pressure fan 10, the indoor expansion gear 11 of lift-launch in indoor set 12 controlled respectively by indoor set control part 21.As control information, possess inlet temperature sensor 35, blow out temperature sensor 36, flue temperature sensor 37, liquid line temperature sensor 38.
Off-premises station 11 and indoor set 12 communicate at control part each other through transmission line 22,23.Connecting under the situation of many off-premises stations 8, connected transmission line 23, carry at the control part 20a on the off-premises station 8a, serve as the unified control of many off-premises stations.Do not serve as other control part 20b of unified control, according to the indication of control part 20a, carry out the control of each parts in the off-premises station.As the control information in each off-premises station, the measured value of temperature sensor 31, pipe arrangement temperature sensor 32, high-pressure sensor 33, low-pressure sensor 34 on the compressor, be sent to control part 20a by transmission line 23.
Indoor set 12 communicates with off-premises station 8a through transmission line 22.According to moving/stop signal of remote controller switch 25,21 pairs of pressure fans 10 of control part control, and the temperature conditions that will have been set by remote controller (not shown), are sent to control part 20a as the inlet temperature sensor 35 of control information, the measured value that blows out temperature sensor 36, flue temperature sensor 37, liquid line temperature sensor 38.Serve as the control part 20a of the unified control of off-premises station 8a, for the measured value according to each control information is adjusted to best refrigerant condition, calculate compressor 1, the outdoor expansion gear 4 of each off-premises station, the command value of indoor expansion gear 11, be sent to each control part 20,21.Control part 20,21 command value according to control part 20a are controlled carrying equipment.
Expression is for the control flow chart that the indoor expansion gear (expansion valve) of the embodiment of the invention is controlled in Fig. 3.In the step 100, behind the beginning heating operation, in the step 101, carry out be used to making the stable operation of freeze cycle.In 102 steps, judge whether the compressor discharge temperature of being measured by discharge temperature sensor 31 has entered in the proper range under the stable state of freeze cycle.(do not deny) to be back to the step 101 entering under the situation of proper range.(be) to be transferred to the step 103 under the situation that has entered proper range.
In the step 103, each outlet temperature of the indoor heat converter 9a～9c that has been measured by temperature sensor 38a～38c respectively by memory in control part 21a～21c.Simultaneously, the temperature of the liquid pipe arrangement 14 of the outdoor pusher side measured by temperature sensor 32 of memory.The temperature of the liquid pipe arrangement 14 of the outdoor pusher side of here, just working becomes memory object.Next, be transferred to the step 104.
In the step 104, the liquid pipe arrangement temperature of the above-mentioned outdoor pusher side of having remembered and each outlet temperature of indoor heat converter 9a～9c are compared, judge whether its difference has surpassed certain value.This judgement is " outlet temperature＜α of the liquid pipe arrangement temperature-indoor heat converter of outdoor pusher side ", whether surpasses the certain value α that has been predetermined according to temperature gap and judges.Here, whether excessively reduced in order to judge indoor expansion valve opening, imagined the liquid pipe arrangement temperature of outdoor pusher side than the outlet temperature height of indoor heat converter.
The result who judges, surpassed at temperature gap under the situation of certain value α (denying), judge that indoor expansion valve opening is excessively reduced, be transferred to the step 105, indoor expansion valve opening (valve opening of indoor expansion gear 11) is opened setting A from valve opening (initial value) thitherto.The result who judges does not surpass under the situation of certain value α (being) at temperature gap, is transferred to the step 106, does not change the supercooling control (heat is handed over supercooling control) of carrying out heat exchanger 9 in indoor expansion valve opening ground.
After the processing in step 105,106, be transferred to the step 107, through being back to the step 103 after the stipulated time (T second), repeat above-mentioned processing.
In the above-mentioned step 104, the outlet temperature of each indoor heat converter by individually with the liquid pipe arrangement temperature of outdoor pusher side relatively, judge, only surpassed the indoor heat converter of setting α for temperature gap, its indoor expansion valve opening is opened setting A.Open setting A by indoor expansion valve opening from valve opening thitherto, the refrigerant flow of indoor heat converter increases suitable amount, in the heat exchange amount increase of indoor set.
As described above, in the air conditioner of multiple, though a plurality of indoor sets are arranged on various places, as the place is set sees from the scope of regulation from off-premises station at aspects such as difference of height, piping lengths and break away from, then flow to the possibility height that the refrigerant amount of indoor set reduces.Reduce as refrigerant amount, then the heat exchange amount at indoor set reduces, and in the degree of supercooling increase of indoor heat converter, outlet temperature reduces.According to the result of this judgement of outlet temperature in the above-mentioned step 104 that has reduced, surpass setting α as temperature gap, then indoor expansion valve opening is opened setting A from the aperture at initial stage.Therefore, the refrigerant flow of indoor heat converter increases, and increases at the heat exchange amount of indoor set, is reduced to appropriate value in the degree of supercooling of indoor heat converter, and outlet temperature rises.Above-mentioned control simultaneously repeats to go on foot 103～step 107, one and carries out in the face of the whole indoor set in the work.
Like this, for see the indoor set that has broken away from from the scope of regulation from off-premises station, can suitably keep the heat exchange amount of indoor heat converter, suitably control a plurality of indoor sets of the air conditioner of multiple.
Except the above-mentioned control of being undertaken by control part, can also be determined the setting A of the valve opening of above-mentioned indoor expansion gear 11 by above-mentioned control part according to the valve opening of predefined outdoor expansion gear 4.That is, refrigerant flow becomes many when the valve opening of outdoor expansion gear 4 is big, so, correspondingly set the setting A of the valve opening of indoor expansion gear 11 greatly therewith.As setting setting A greatly, because the refrigerant flow of indoor heat converter 9 is increased, so, for the indoor set that the scope from regulation breaks away from, the outlet temperature of indoor heat converter 9 has reduced, can promptly make degree of supercooling revert to appropriate value, outlet temperature is risen.
The valve opening of above-mentioned outdoor expansion gear 4 uses outer temperature degree and compressor frequency to preestablish by above-mentioned control part.As reducing at heating operation China and foreign countries temperature degree, then load increases, so, the flow of cold-producing medium is increased.Therefore, owing to be to make the compressor frequency increase that the discharge pressure of compressor is risen, so, correspondingly increase the valve opening of outdoor expansion gear 4 therewith.Preestablish the valve opening of outdoor expansion gear 4 by the outer temperature degree of such use and compressor frequency, the indoor set for the outlet temperature of indoor heat converter 9 has reduced can make degree of supercooling promptly revert to appropriate value, and outlet temperature is risen.
In addition, except above-mentioned control, can also provide the change amount (setting A) of the valve opening of above-mentioned indoor expansion gear 11 according to the inlet temperature of having been measured by the inlet temperature sensor 35 of each indoor set.Namely, by detect the temperature in the indoor set with inlet temperature, obtain the change amount (setting A) of the valve opening of indoor expansion gear 11 according to this temperature, can control the refrigerant flow of indoor heat converter 9 corresponding to room temperature, suitably keep the heat exchange amount with the corresponding indoor heat converter of room temperature.
And, in a plurality of indoor sets, the valve opening of which indoor expansion gear is controlled (aperture of setting A is controlled), determines according to the heat exchanger degree of supercooling of the saturation temperature of obtaining from the value of measuring of the high-pressure sensor 33 of compressor and indoor heat converter.Namely, with respect to saturation temperature, under the inappropriate situation of heat exchanger degree of supercooling, for example under the excessive situation of heat exchanger degree of supercooling, the valve opening of judging the indoor expansion gear of this indoor heat converter reduces excessively, carry out the aperture control of setting A, select the big indoor set of heat exchanger degree of supercooling.
In addition, the initial value of the valve opening of above-mentioned indoor expansion gear (adding setting A valve opening before) determines corresponding to the connection status of indoor set and off-premises station.Namely, in the initial value of the valve opening that is determined indoor expansion gear by control part, the execution conditions of the correction of the pressure loss amount of being undertaken by the piping length of adding according to indoor set and off-premises station or the air conditioners such as correction that carry out according to the difference of height of indoor set and off-premises station can make the heat exchange amount of the indoor set reasonable time that becomes shorten.Specifically, the initial value of valve opening of indoor expansion gear that has been located at the off-premises station in farther place, high place is set greatly.
In addition, when adding setting A, the valve opening at indoor expansion gear carries out timing, simultaneously whole indoor sets is not implemented, but proofread and correct by the expansion valve opening to the indoor set of operating 1～total-1 the number of platform arbitrarily, can prevent the unwanted switching of indoor expansion valve.Control the indoor expansion valve of which indoor set, hand over outlet subcooling according to the heat of the saturation temperature of obtaining from the value of measuring of high-pressure and indoor heat converter, select the indoor expansion valve of the big indoor set of degree of supercooling.
The key diagram that expression is represented the variation of the valve opening of outdoor and indoor expansion gear in Fig. 4.In order to make freeze cycle stable, implement the valve of outdoor expansion gear and indoor expansion gear has been set as the operation of certain aperture.After freeze cycle was stable, outdoor expansion valve handed over the overheated mode that becomes certain to control with outdoor heat, and the mode that indoor expansion valve hands over outlet subcooling to become certain with indoor heat is implemented expansion valve control.Become under the situation more than certain aperture (zone that has surpassed decision content) in the outdoor expansion valve aperture, by opening indoor expansion valve opening, suitably kept the heat exchange amount of indoor heat converter.
In addition, be replaced as the judgement in the step 104 of Fig. 3 as the outdoor expansion valve aperture with Fig. 4, the result of Pan Dinging then, surpassed at temperature gap under the situation of certain value α (denying), become the zone that in Fig. 4, has surpassed decision content, by the aperture of indoor expansion valve 11 is opened setting A, suitably keep the heat exchange amount of indoor heat converter.
In the air conditioner of the multiple that has connected a plurality of indoor sets with respect to 1 off-premises station, in order suitably to adjust the heat exchange amount of each indoor set, exist by adjusting the heat that indoor expansion valve opening carries out and surrender the cooling control of making a slip of the tongue.This control is to make from pressure gauge calculates by measuring of being located at that compressor discharges that the pressure sensor of side detected saturation temperature and indoor heat converter outlet temperature to be in control in the suitable scope.In this control mode, the state that arranges at air conditioner, for example the difference of height of off-premises station and indoor set breaks away under the situation of imagination scope, can not suitably control heat and hand over outlet subcooling, the valve opening of the indoor expansion gear of lift-launch in indoor set reduces excessively, and heat exchange amount does not become suitable between each indoor set.
As detecting with good accuracy because the deviation of the heat exchange amount between each indoor set that the aperture of indoor expansion valve reduces excessively to cause, make the uniform means of heat exchange quantitative change, use the aperture according to outer temperature degree and the predefined outdoor expansion valve of compressor frequency.
The heat exchange amount of outdoor heat converter can calculate according to outer temperature degree, is controlled by the aperture of outdoor expansion valve to the cold-producing medium influx of outdoor heat converter.For this reason, about the cold-producing medium influx to outdoor heat converter, with respect to the cold-producing medium influx of obtaining from compressor frequency, under the situation that the difference change of the cold-producing medium influx of obtaining from outdoor expansion valve aperture and outer temperature degree is big, think that indoor expansion valve opening reduces excessively, heat exchange amount at indoor heat converter has produced deviation, by opening indoor expansion valve, can suitably keep the heat exchange amount of indoor heat converter.
In addition, the invention is not restricted to above-described embodiment, comprise various variation.For example, above-described embodiment is for the embodiment that understands easily and in detail, is not necessarily limited to possess the embodiment of the whole structure that has illustrated.In addition, the part of the structure of a certain embodiment can be replaced as the structure of other embodiment, in addition, also can in the structure of a certain embodiment, add the structure of other embodiment.In addition, about the part of the structure of each embodiment, can carry out appending, remove, replacing of other structure.
In addition, each above-mentioned structure, function, handling part, processing means etc., also can by design in integrated circuit for example they part or all etc., realized by hardware.In addition, each above-mentioned structure, function etc. also can be explained by processor, carry out for realizing each functional programs, are realized by software.Realize the information of each functional programs, table, file etc., can be placed in the recording mediums such as memory, hard disk, SSD tape decks such as (solid state hard discs) or IC-card, SD card, DVD.
In addition, control line, information wire are the needed lines of explanation, are not necessarily limited to have whole control lines, information wire as product.Can think that also in fact most structure is connected to each other.
Description of reference numerals:
1a, 1b ... the compressor of capacity variable type
2a, 2b ... oil eliminator
3a, 3b ... cross valve
4a, 4b ... outdoor expansion gear
5a, 5b ... outdoor heat converter
6a, 6b ... pressure fan
7a, 7b ... reservoir
8a, 8b ... off-premises station
9a, 9b, 9c ... indoor heat converter
10a, 10b, 10c ... indoor blower
11a, 11b, 11c ... indoor expansion gear
12a, 12b, 12c ... indoor set
13 ... the gas pipe arrangement
14 ... the liquid pipe arrangement
20a, 20b ... off-premises station control part (control part)
21a, 21b, 21c ... indoor set control part (control part)
22 ... transmission line (between off-premises station-indoor set)
23 ... transmission line (between the off-premises station)
25 ... the remote controller switch
30a, 30b ... outer temperature degree sensor
31a, 31b ... temperature sensor on the compressor
32a, 32b ... pipe arrangement temperature sensor (first temperature sensor)
33a, 33b ... the high-pressure sensor
34a, 34b ... low-pressure sensor
35a, 35b, 35c ... the inlet temperature sensor
36a, 36b, 36c ... blow out temperature sensor
37a, 37b, 37c ... the flue temperature sensor
38a, 38b, 38c ... liquid line temperature sensor (second temperature sensor)
Claims (6)
1. air conditioner, this air conditioner is connected with a plurality of indoor sets that possess indoor expansion gear, indoor heat converter, indoor blower by the off-premises station that liquid connecting pipings and gas connecting pipings will possess compressor, cross valve, outdoor heat converter, outdoor expansion gear, outdoor draft fan and outer temperature degree sensor, and this air conditioner is characterised in that:
Be provided with first temperature sensor that the liquid pipe arrangement temperature of above-mentioned outdoor pusher side is measured, and be provided with second temperature sensor that outlet temperature is measured at the indoor heat converter of above-mentioned each indoor set; Possess control part, this control part compares the temperature that above-mentioned two temperatures sensor in the heating operation determines, and its difference has been surpassed the indoor set of certain value, controls in the mode of the valve opening of indoor expansion gear being opened setting (A).
2. air conditioner according to claim 1 is characterized in that:
By above-mentioned control part, determine the setting (A) of the valve opening of above-mentioned indoor expansion gear according to the valve opening of predefined outdoor expansion gear.
3. air conditioner according to claim 2 is characterized in that:
By above-mentioned control part, use outer temperature degree and compressor frequency to preestablish the valve opening of above-mentioned outdoor expansion gear.
4. air conditioner according to claim 1 is characterized in that:
By above-mentioned control part, provide the setting (A) of the valve opening of above-mentioned indoor expansion gear according to the inlet temperature of each indoor set, thereby suitably keep the heat exchange amount of indoor heat converter.
5. air conditioner according to claim 1 is characterized in that:
The initial value of the valve opening of above-mentioned indoor expansion gear decides corresponding to the connection status of indoor set and off-premises station.
6. air conditioner according to claim 1 is characterized in that:
By above-mentioned control part, decide the controlled indoor set of valve opening of indoor expansion gear according to the heat exchanger degree of supercooling of the saturation temperature of obtaining from the value of measuring of high-pressure and indoor heat converter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-042884 | 2012-02-29 | ||
| JP2012042884A JP5627620B2 (en) | 2012-02-29 | 2012-02-29 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103292427A true CN103292427A (en) | 2013-09-11 |
| CN103292427B CN103292427B (en) | 2016-01-13 |
Family
ID=49093726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310053209.XA Active CN103292427B (en) | 2012-02-29 | 2013-02-19 | Air conditioner |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5627620B2 (en) |
| CN (1) | CN103292427B (en) |
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| CN107407494A (en) * | 2015-04-03 | 2017-11-28 | 江森自控日立空调技术（香港）有限公司 | Air-conditioning |
| CN107407494B (en) * | 2015-04-03 | 2020-02-28 | 日立江森自控空调有限公司 | Air conditioner |
| CN108027179B (en) * | 2015-09-11 | 2020-02-11 | 日立江森自控空调有限公司 | Air conditioner |
| CN108027179A (en) * | 2015-09-11 | 2018-05-11 | 日立江森自控空调有限公司 | Air conditioner |
| CN105571086B (en) * | 2016-03-04 | 2018-06-05 | 广东美的制冷设备有限公司 | Control method, control device and the multi-split air conditioner of multi-split air conditioner |
| CN105571086A (en) * | 2016-03-04 | 2016-05-11 | 广东美的制冷设备有限公司 | Control method and control device of multi-split air conditioner and multi-split air conditioner |
| CN107144057B (en) * | 2017-05-26 | 2019-08-30 | 广东美的制冷设备有限公司 | Air-conditioning system and its control device, method |
| CN107144057A (en) * | 2017-05-26 | 2017-09-08 | 广东美的制冷设备有限公司 | Air-conditioning system and its control device, method |
| CN110553418A (en) * | 2019-09-02 | 2019-12-10 | 全谷制冷空调（上海）有限公司 | Multi-connected refrigerator |
| CN111473496A (en) * | 2020-04-29 | 2020-07-31 | 广东美的暖通设备有限公司 | Air conditioning system, control method and device thereof and storage medium |
| CN111473496B (en) * | 2020-04-29 | 2021-08-13 | 广东美的暖通设备有限公司 | Air conditioning system, control method and device thereof and storage medium |
| CN113188230A (en) * | 2021-04-16 | 2021-07-30 | 宁波奥克斯电气股份有限公司 | Expansion valve control method and device of multi-connected air conditioner and multi-connected air conditioner |
| CN113188230B (en) * | 2021-04-16 | 2022-06-28 | 宁波奥克斯电气股份有限公司 | Expansion valve control method and device of multi-connected air conditioner and multi-connected air conditioner |
| CN114608181A (en) * | 2022-03-21 | 2022-06-10 | 青岛海尔空调电子有限公司 | Control method and device of electronic expansion valve, medium and air source heat pump unit |
| CN114608181B (en) * | 2022-03-21 | 2023-12-26 | 青岛海尔空调电子有限公司 | Control method and device for electronic expansion valve, medium and air source heat pump unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5627620B2 (en) | 2014-11-19 |
| CN103292427B (en) | 2016-01-13 |
| JP2013178058A (en) | 2013-09-09 |
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