CN1105884C - Ice-storage air conditioning system - Google Patents

Abstract

The present invention relates to an air condition system for ice storage, particularly to a system capable of generating moderate ice storage effects by controlling an air conditioner to make the air conditioner execute tube discharge or match with an ice storage tank. The system utilizes the ice storage effects to prolong the supply time of cold air for further prolonging the starting and stopping period of a compressor and increasing the service life of the compressor. The system simultaneously utilizes electric power during low peaks to store considerable ice storage quantity in advance so as to utilize the storage ice quantity stored in advance during high peaks. The auxiliary compressor provides sufficient air condition capability and efficiently transfers electric power consumption at high peaks. The air condition system for ice storage of the present invention can provide comfortable and energy-saving air condition effects and greatly reduce the primary cost of the ice storage air condition, and can be suitable for the modification of old systems.

Description

A kind of ice-storage air conditioning system

The present invention relates to a kind of ice-storage air conditioning system, specifically relevant a kind of air conditioner of controlling makes its pipe row or cooperates ice machine bin, can produce the system of appropriate ice storage effect.

The running of general its compressor of air conditioner, be open when a kind of, the time cycle operation of stopping, promptly provide when reaching when cold air in a certain state of temperature, compressor promptly temporarily shuts down, after treating temperature recovery, start running once more, so start-stop stops constantly circulating start, and will reduce its service life of getting off for a long time along with the increase of on-off frequency.Therefore, increase the service life of compressor, manage to reduce the startup-shutdown number of times, be a kind of effective good method.

Moreover; when air conditioner in stopped status; because the very fast easily quilt of moisture content on the pipe row is taken back in the air-conditioned room; and the latent heat load of increase air conditioner; cause the hurried rising of indoor humidity, personnel do not feel like oneself, the compressor running of must starting shooting immediately again; thereby shorten the cycle of opening, shutting down running, directly influence the service life of compressor.

In order to solve above-mentioned shortcoming, though the generation of cold-storing type air-conditioning system is arranged, the traditional cold-storing type air-conditioning of this kind system must be installed in a particular space to ice storage device, and not only very consumption takes up space, and increases cost relatively; Simultaneously, the problem of telling is returned for moisture content by this traditional ice storage system, also can't solve.

The inventor finishes creation of the present invention finally because the shortcoming of above-mentioned existing air conditioner is the active research improvement.Creation purpose of the present invention is:

1, the present invention utilizes pipe row's ice storage effect, with low pipe row's temperature, can prevent from that moisture content in the row of pipe from being returned to tell in the conditioned area;

2, the present invention maintains under the same comfortable situation temperature, moisture stable between conditioned area, so the temperature between conditioned area can be set in the high value state, Yi Da province energy effect;

3, the present invention can allocate the electricity usage at high and low peak, and the complementarity of the air-conditioning ability of air conditioner is increased, and effectively reduces the installed capacity of air-conditioning equipment, alleviates the power consumption load of peak power;

4, the present invention can go up direct ice storage in pipe row, does not consume to take up space;

5, the present invention can effectively prolong the opening of compressor, outage period, to obtain to increase the service life of main frame.

The objective of the invention is to adopt following technical proposals to realize:

Ice-storage air conditioning system of the present invention comprises compressor; condenser; drier; the cold medium flux controller; controller; fan motor; evaporimeter and sensor; it is characterized in that utilizing a sensor that is installed on the return duct of evaporimeter; in order to detect its outlet temperature value; and by controller according to the comparison of this temperature value and set temperature value after; output one corresponding signal; with opening of control compressor; shut down running; and the rotation speed change of cooperation fan motor; refrigerant temperature is descended; and the pipe row who makes evaporimeter produces appropriate ice storage effect; and control it and the ice amount and be maintained within a certain range; utilization is being somebody's turn to do ice sheet and is being made when compressor shuts down, can be through the air-supply of fan motor, and continuing provides appropriate cold air effect to air-conditioned room; open to prolong compressor; outage period, and prevent that moisture content from returning and tell.

The present invention utilizes air conditioner pipe row or cooperates ice machine bin (type on air conditioner is decided), produce appropriate ice storage effect, utilize this ice storage effect to prolong the cold air supply time, the prolongation compressor is opened, outage period, reduce and open, shut down number of times, and increase its service life; Can utilize simultaneously the suitable ice storage amount of pre-storage of ebb period, for the cold air load of Ying Gaofeng period, to reach regional air conditioner energy complement effect; In addition pipe row ice storage is taken back in the air conditioning chamber for also waterproof part once again, the latent heat load when reducing next compressor operation, and obtain to economize can, comfortable air-conditioning effect.

The drawing of accompanying drawing is described as follows:

Fig. 1 is the system schematic of the embodiment of the invention 1;

Fig. 2 is the compressor control flow chart of the embodiment of the invention 1;

Fig. 3 is the fan motor control flow chart of the embodiment of the invention 1,2;

Fig. 4 is the system diagram of the embodiment of the invention 2;

Fig. 5 is the compressor control flow chart of the embodiment of the invention 2;

Fig. 6 is that the electromagnetism of the embodiment of the invention 2 ends the valve control flow chart;

Fig. 7 is the system schematic of the embodiment of the invention 3;

Fig. 8 is the system schematic of the embodiment of the invention 4.

Below cooperate now to illustrate, introduce embodiments of the invention in detail and reach benefit as follows:

At first introducing embodiments of the invention 1, see also shown in Figure 1ly, is the system diagram for single evaporation tube row air conditioner.This kind of air conditioner is applicable to types such as window type machine, separate cold machine, box machine, straight-expansion type air conditioner case, carry out the cold air supply mainly by compressor 11, condenser 12, drier 13, cold medium flux controller 14, controller 15, fan motor 16, evaporimeter 17 and the air conditioners that element constituted such as sensor T10, T20, and to air-conditioned room A.After making refrigerant be sent to condenser 12 condensations through the compression operation of compressor 11 via pipeline, again via drier 13, cold medium flux controller 14, arrive evaporimeter 17 via after the evaporation, by the air-supply of a fan motor 16, making room A obtain cold air provides.And refrigerant is through after the heat exchange of this evaporimeter 17, again by the return duct of pipeline, gets back to compressor 11 and finishes a circulation start.Wherein sensor T10 is installed on the return duct of evaporimeter 17; outlet temperature value TE in order to detecting evaporimeter 17; and by the comparison result of controller 15 according to this TE value and set temperature value TES; export a corresponding signal; with opening of control compressor 11; shut down running; and the rotation speed change of cooperation fan motor 16; when rotating speed slack-off; when air quantity reduces; refrigerant temperature is descended; and make evaporimeter 17 its pipe rows 171 produce the ice storage effect; and this ice storage effect accompanying on pipe row 171 the ice amount; can utilize sensor T10 constantly to detect the outlet temperature TE value of evaporimeter 17; with on the control valve row 171 the ice amount maintain in the setting range; promptly control the TE value in setting range; but with regard to control valve arrange 171 ice storages ice measure that (control of the ice amount also can be adopted other means and be reached; as photoelectricity; the sensing mode of pressure etc.); utilize this pipe row 171 ice storage effect to provide compressor when shutting down again; can be through the air-supply of fan motor 16; continuation provides the cold air effect of appropriateness to air-conditioned room A; and take away latent heat in the air-conditioned room, can prevent from that moisture content in the row of pipe from returning to tell.

In addition, another sensor T20 is then in order to detect the environment temperature TA of air-conditioned room A, and this temperature T A value is sent to after controller 15 compares with design temperature TAS, export a corresponding signal, rotating speed with control fan motor 16 maintains in the setting range environment temperature TA of air-conditioned room A.

As mentioned above, utilize the detecting of sensor T10 to the outlet temperature TE of evaporimeter 17, with control evaporimeter 17 pipe row the ice amount remain on an an amount of scope, and can prevent that refrigerant temperature is low excessively; And utilize sensor T20 that the environment temperature TA in the air-conditioned room A is detected, and use the environment temperature in the air-conditioned room A, control air-conditioned room A maintains in the range of set temperature; Simultaneously, in order to reach above-mentioned control purpose, the running start of compressor 11 and fan motor 16, then carry out (seeing also shown in Fig. 2,3) according to follow procedure respectively:

1, when TE＞TES+X (X represents out to stopping the temperature gap that the interval sets), compressor 11 start runnings; And when TE≤TES-X, compressor 11 shuts down.

2, when TA＞TAS+X, fan motor 16 is full-speed operation: and when TAS+X 〉=TA 〉=TAS-X, the rotating speed of fan motor 16 is the runnings big or small in direct ratio with the TA value; Moreover when TA＜TAS-X, fan motor 16 is with minimum speed running (minimum speed also can be set at zero).

Shown in Figure 4, be embodiments of the invention 2, be to extend to the system that an above evaporation tube row uses by embodiment 1, be applicable to central direct-expansion type system, the system of a compressor such as one-to-many separate cold machine or an above compressor cooperation multi-evaporator, mainly by compressor 21, condenser 22, drier 23, hydrops device 28 and the electromagnetism more than two or two end valve SV1, SV2..., control valve for refrigerant flow 241,242..., evaporimeter 271,272..., controller 251,252..., fan motor 261,262..., sensor T11, T21, T12, T22... wait element to constitute, and respectively to room A1, A2... carry out the cold air supply.When making refrigerant, compressor 21 compression operation are sent to condenser 22, drier 23 via pipeline, end valve SV1, SV2..., control valve for refrigerant flow 241,242... again by the evaporation of evaporimeter 271,272... via the electromagnetism of each distribution pipeline respectively again, respectively each room A1, A2... are carried out the cold air supply.Wherein sensor T11 is installed on the return duct of evaporimeter 271, outlet temperature value TE1 in order to detecting evaporimeter 271, and sensor T12 is installed on the return duct of evaporimeter 272, outlet temperature value TE2 in order to detecting evaporimeter 272, and by controller 251,252 respectively according to the comparison result of TE1 and TES1, TE2 and TES2, with control compressor 21 open, shut down running, promptly when TE1＞TES1+X or TE2＞TES2+X, compressor 21 starts are turned round; And as TE1≤TES1-X, during and TE2≤TES2-X, compressor 21 shut down (shown in Figure 5).That is to say each evaporimeter 271,272... in system, when as long as its outlet temperature value of evaporimeter TE is arranged greater than set temperature value TES+X, compressor 21 running of promptly starting shooting, so this is not to represent its outlet temperature of all evaporimeters TE all greater than set temperature value TES+X, and need the supply of cold air, therefore on each distribution pipeline, respectively be provided with an electromagnetism and end valve SV1, SV2..., with the refrigerant turnover of each distribution pipeline of control, promptly electromagnetism ends opening or closing by the following start that imposes a condition (as shown in Figure 6) of valve SV1, SV2...:

1, when TE1＞TE1S+X, SV1 opens;

When TE2＞TE2S+X, SV2 opens.

(below analogize)

2, when TE1≤TE1S+X, SV1 closes;

When TE2≤TE2S+X, XV2 closes.

(below analogize)

In addition, sensor T21 is the environment temperature TA1 in order to detecting air-conditioned room A1, and this value TA1 is sent to after controller 251 compares with design temperature TAS1, export the rotating speed of a corresponding signal, the environment temperature TA1 of air-conditioned room A1 is maintained in the setting range with control fan motor 261; In like manner sensor T22 is also in order to detect the environment temperature TA2 of air-conditioned room A2, and this value TA2 is sent to after controller 252 compares with design temperature TAS2, same output one corresponding signal is with the rotating speed of control fan motor 262, the environment temperature TA2 of air-conditioned room A2 is maintained in the setting range, and all the other each air-conditioned rooms also follow than mode controls start.

Rotating speed as for fan motor 261,262..., be air-conditioned room A1, A2... to be detected according to sensor T21, T22..., measured ambient temperature value TA1, TA2..., after importing controller 251,252... and set temperature value TAS1, TAS2... more respectively and comparing, export the rotating speed (see also shown in Figure 3) of a control signal respectively, promptly with control fan motor 261,262...

1, when TA1＞TAS1+X, fan motor 261 full-speed operations;

When TA2＞TAS2+X, fan motor 262 full-speed operations.

(below analogize)

2, when TAS1+X 〉=TA1 〉=TAS1-X, fan motor 261 rotating speeds are to be directly proportional with the TA1 value;

When TAS2+X 〉=TA2 〉=TAS2-X, fan motor 262 rotating speeds are to be directly proportional with the TA2 value.

(below analogize)

3, when TA1＜TAS1-X, fan motor 261 is with minimum speed running (minimum speed also can be set at zero);

When TA2＜TAS2-X, fan motor 262 turns round with minimum speed.

(below analogize)

Please consulting shown in Figure 7ly again, is the system diagram for embodiments of the invention 3.This is that an ice machine bin cooperates evaporation tube to arrange the system of direct ice storage, mainly end the air conditioner that elements such as valve SV3, cold medium flux controller 34, controller 35, fan motor 36, evaporimeter 37, ice machine bin 39, hydrops device 381, reservoir 382 and sensor T23, T31, T13 are formed, air-conditioned room A3 is carried out the cold air supply by compressor 31, condenser 32, drier 33, electromagnetism.Ice machine bin 39 contents are provided with some ice hockeys or ice storage substance B, the present invention can utilize ebb electric power, lay in an amount of ice storage in advance, reach high ebb electric power transfer effect, give full play to the regional complementarity effect, mainly be the ambient temperature value TA that utilizes sensor T23 sensing air-conditioned room A3, (TAS represents the environment temperature set when TA＞TAS+X, the difference of X representation temperature), controller 35 meeting control refrigerant electromagnetism end valve SV3 and open, make the refrigerant control valve for refrigerant flow 34 of flowing through enter evaporimeter 37, this moment, compressor 31 was arranged 371 outlet temperature TE according to evaporation tube, whether needed running refrigeration (pipe outlet temperature T E is detected by sensor T31) by controller 35 control compressors; When still ice storage being arranged in the ice machine bin 39, electromagnetism ends valve SV3 and opens, and normal temperature saturation pressure (the about 30 ℃) refrigerant in the reservoir 382, after control valve for refrigerant flow 34, enter evaporimeter 37 heat absorption evaporations, enter heat releases in the ice machine bin 39 again and be condensed into liquid refrigerants (being liquid refrigerants) for about 0 ℃ saturation pressure, and this liquid low temperature refrigerant also can flow back to the interior continuation heat absorption of evaporimeter again, and (therefore liquid low temperature refrigerant is than great, but the nature inflow evaporator flashes to gas again, so circulation endlessly), one waits until ice in the ice machine bin 39 melts entirely and finishes, temperature begins to rise in the ice machine bin 39, end its temperature of refrigerant and the pressure that valve SV3 enters evaporimeter 37 by electromagnetism, (so time be saturation state) all synchronously also rises, until TE during greater than 5～10 ℃ or X ℃, the expression heat accumulation has not been inconsistent use, compressor 31 essential running heat extractions, and controller 35 output control signals are with the 31 start runnings of drive compression machine.

After compressor 31 running, the cold air ability is directly proportional with the difference of TA-TAS, because of the rotating speed of fan motor 36 with the variation in direct ratio of the difference of TA-TAS, promptly the cold air ability is to be directly proportional with air quantity.Therefore when the approaching setting value of TA TAS, air quantity reduces, and the cold air ability that evaporimeter 37 consumes reduces relatively, and compressor 31 remains in operation, and unnecessary refrigerating capacity can be brought into play the ice making effect in the ice machine bin 39.When finishing the ice making stroke in the ice machine bin 39; the outlet temperature TC of ice machine bin begins obvious decline (temperature value of TC is measured by sensor T13); when TC＜TCS-X (the ice machine bin outlet temperature of TCS) for setting; controller 35 meeting control electromagnetism end valve SV3 and close; this moment, compressor 39 remained in operation; and refrigerant is compressed to is stored in reservoir 382 after condenser 32 is condensed into liquid; one is lower than the force value of setting or through X after second that is the shutdown of compressor control until its force value of low tension switch LP; can end valve by electromagnetism and close the back with time relay control, compressor 31 just shuts down.

Shown in Figure 8, be embodiments of the invention 4, it is system by embodiment 3 an above evaporimeter and the ice machine bin of extending to, mainly by compressor 41, condenser 42, drier 43, reservoir 482, hydrops device 481 and the electromagnetism more than two or two end valve SV4, SV5..., control valve for refrigerant flow 441,442..., evaporimeter 471,472..., ice machine bin 491,492..., controller 451,452..., fan motor 461,462..., and sensor T14, T32, T24, T15, T33, T25... wait element to constitute, respectively to air-conditioned room A4, A5... carry out the cold air supply, and utilize sensor T24, T25... distinguish sensing air-conditioned room A4, A5... ambient temperature value TA1, TA2..., promptly

When TA1＞TAS1+X (TAS1 represents the setting value of the environment temperature of air-conditioned room A4), controller 451 can control refrigerant electromagnetism ends valve SV4 and opens;

When TAS＞TAS2+X (TAS2 represents the setting value of the environment temperature of air-conditioned room A5), controller 452 can control refrigerant electromagnetism ends valve SV5 and opens.

(below analogize)

Compressor 41 is according to the sizes of each evaporation tube row 4711, its outlet temperature of 4721... TE at this moment, whether the control signal control compressor 41 that is sent by controller 451,452... needs running refrigeration (respectively managing outlet temperature T E is to be detected by each sensor T32, T33...), as long as the outlet temperature TE value among each pipe row, have one during greater than 5 ℃～10 ℃ or X ℃ (temperature value that the X representative is set), compressor 41 is entry into service; When each ice machine bin 491,492... it is interior when still ice storage being arranged, each electromagnetism ends valve SV4, SV5... promptly can open, and normal temperature saturation pressure (the about 30 ℃) refrigerant in the reservoir 482, respectively can be from refrigerant flow control valve 441,442... flow into respectively this evaporimeter 471,472... heat absorption evaporation, enter ice machine bin 491 again, 492... interior heat release is condensed into liquid refrigerants, treat each ice machine bin 491,492... interior ice melts entirely and finishes, ice machine bin 491,492... interior temperature begins to rise, end valve SV4 by each electromagnetism, SV5... enter evaporimeter 471,472... refrigerant temperature and pressure, also rise all synchronously, when one outlet temperature TE is arranged in each evaporimeter greater than 5～10 ℃ or X ℃, the expression heat accumulation has not met use, compressor 41 necessary running heat extractions, and by this controller 451 or 452... output one control signal, with the 41 start runnings of drive compression machine.

After compressor 41 runnings, the cold air ability is directly proportional with the difference of TA1-TA1S, TA2-TA2S... (being that the cold air ability is directly proportional with the difference that environment temperature subtracts its design temperature), and the cold air ability is to be directly proportional with the air output of fan motor 461,462....When therefore working as TA1 near TA1S value (or TA2 is near the TA2S value ...), air quantity reduces, evaporimeter 471,472... the cold air ability that consumes reduces relatively, compressor 41 turns round and unnecessary refrigerating capacity, can bring into play ice machine bin 491,492... interior ice making effect, when ice machine bin 491,492... in when finishing the ice making stroke, the outlet temperature of each ice machine bin (TC) beginning is decline (each ice machine bin 491 obviously, 492... outlet temperature TC, be respectively by sensor T14, T15... measured), when TC＜TCS-X (the ice machine bin outlet temperature of TC) for setting, each controller 451,452... can be according to the condition of each its TC＜TCS-X of isocon, controlling respectively respectively, the electromagnetism of this isocon ends valve SV4, SV5... close, this moment, compressor remained in operation, and refrigerant is compressed to is stored in reservoir 382 after condenser 42 is condensed into liquid, one force value until low tension switch LP is lower than the force value (or each electromagnetism ends valve Close All X after second) of setting, and compressor just shuts down.

Sensor T10 in the various embodiments described above, T11, T12, T13, T31, T14, T32, T15, T33 etc. are temperature-sensitive sticker, mainly in the outlet temperature of detecting evaporimeter or ice machine bin, then according to this detecting value TE, TC and setting value TES, TCS... wait the result after comparing, with the generation of the ice storage effect of control evaporator tube row or ice machine bin and the ice amount, only utilize the basis of temperature as control, it is not the unique control mode of the present invention, such as utilizing photoelectricity (infrared ray), pressure etc. also can reach aforesaid control purpose, as being example with photoelectricity (or pressure), this moment sensor T10, T11... etc., promptly can be an infrared sensor (or pressure sensor etc.), and the sensing value TE that is detected, TC... be one the sensing value of the thickness of ice amount or pressure of refrigerant etc., same again according to the comparison result of sensing value and setting value, by previous described Fig. 2,3 or 5,6 control flow is controlled compressor and electromagnetism and is ended opening or closing of valve; As for the position of this sensor installing, can be in evaporimeter, ice storage barrel row's appropriate location (installation position is a principle can correctly detect the sensing value of being taken a sample).

In sum, ice-storage air conditioning system of the present invention utilizes appropriate ice storage effect, supplies to prolong cold air Between seasonable, that reduces compressor opens, stops number of times, to prolong its service life, can effectively utilize simultaneously The suitable ice storage amount of the pre-storage of ebb electric power comes auxiliary compressor that enough air-conditioning abilities were provided peak period, Reach the regional complementarity effect, effectively shift the consumption of peak power, and mat the present invention with provide comfortable, Economize the air-conditioning effect of energy.

Claims (7)

1; a kind of ice-storage air conditioning system; comprise compressor; condenser; drier; the cold medium flux controller; controller; fan motor; evaporimeter and sensor; it is characterized in that utilizing a sensor (T10) that is installed on the return duct of evaporimeter; in order to detect its outlet temperature value; and by controller according to the comparison of this temperature value and set temperature value after; export a corresponding signal; with opening of control compressor; shut down running; and the rotation speed change of cooperation fan motor; refrigerant temperature is descended; and the pipe row who makes evaporimeter produces appropriate ice storage effect, and controls it and the ice amount and maintain in the setting range, utilizes be somebody's turn to do ice sheet and make when compressor shuts down; air-supply that can the mat fan motor; continuation provides appropriate cold air effect to air-conditioned room, opens to prolong compressor; outage period, and prevent that moisture content from returning and tell.

2, a kind of ice-storage air conditioning system as claimed in claim 1, it is characterized in that having a sensor (T20) is to be installed in the air-conditioned room, in order to the environment temperature in the detecting room.

3, a kind of ice-storage air conditioning system as claimed in claim 1, it is characterized in that being provided with simultaneously in the system one or more evaporimeter, respectively this evaporimeter is to be installed in respectively on intrasystem each isocon, and each evaporimeter is mated respectively have an electromagnetism to end valve, one cold medium flux controller, one controller, one fan motor and two sensors, and utilize an outlet temperature that is installed in sensor (T10) the detecting evaporimeter on the evaporimeter return duct, again via after each controller and the design temperature comparison, output one corresponding control signal ends opening or closing of valve with the control electromagnetism, and the opening of compressor, evaporator tube row shuts down start, so that can produce the ice storage effect; Another sensor (T20) is to be installed in the air-conditioned room, in order to the environment temperature of detecting air-conditioned room A.

4, a kind of ice-storage air conditioning system as claimed in claim 1 is characterized in that the evaporimeter coupling connects an ice machine bin, and install a sensor on the return duct of ice machine bin, to detect the outlet temperature of this ice machine bin; On the return duct of evaporimeter, install a sensor in addition, with the outlet temperature of detecting evaporimeter; One sensor (T20) is to be installed in the air-conditioned room, in order to the ambient temperature value in the detecting room; By the measured temperature value of sensor (T20), after the comparison of controller and set temperature value, export a corresponding control signal, end opening or closing of valve to control an electromagnetism, and compressor open, shut down start.

5, ice-storage air conditioning system as claimed in claim 3 is characterized in that and each evaporimeter is mated respectively that an ice machine bin is arranged.

6, ice-storage air conditioning system as claimed in claim 4 is characterized in that being provided with simultaneously in the system one or an above evaporimeter, and respectively this evaporimeter is installed in respectively on intrasystem each isocon.

7, a kind of ice-storage air conditioning system as claimed in claim 4, it is characterized in that sensor (T10) in order to detecting evaporimeter or ice machine bin outlet temperature, be to be used for the temperature-sensitive sticker that control valve is being arranged the ice amount for one, or photoelectricity, pressure sensor, direct sensing ice amount or sensing refrigerant pressure, as the basis of system's ice storage control.

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