CN1156809A - Split type air conditioner - Google Patents
Split type air conditioner Download PDFInfo
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- CN1156809A CN1156809A CN96122652A CN96122652A CN1156809A CN 1156809 A CN1156809 A CN 1156809A CN 96122652 A CN96122652 A CN 96122652A CN 96122652 A CN96122652 A CN 96122652A CN 1156809 A CN1156809 A CN 1156809A
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- defrost operation
- temperature
- outdoor
- air conditioner
- indoor unit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The split type air conditioner of the present invention having an indoor unit and an outdoor unit is provided with a mechanical temperature detector in the outdoor unit to detect the frosted condition of an outdoor heat exchanger, and activates the CT in the indoor drive circuit of an outdoor fan motor as receiving means supplied with a frost detection signal delivered from the mechanical temperature detector so as to deliver a de-ice operation start signal on the basis of the information from the CT.
Description
The present invention relates to a kind of detachable air conditioner, it has an indoor unit and an outdoor unit.
Recently, air-conditioner has been widely used for family, and in Japan, domestic air conditioner is detachable air conditioner mostly, be used for cooling and heating, when this detachable air conditioner is used for interior space heating and when this moment, outside air temperature was low, defrost operation control was absolutely necessary, to remove the frost of outdoor unit heat exchanger, like this, in this case, traditional detachable air conditioner will be accurately and is suitably carried out defrost control, and this is the major requirement or the problem in this field.
Below accompanying drawing, narrate a kind of traditional detachable air conditioner, Fig. 4 is a kind of can the refrigeration and the circuit structure diagram of traditional detachable air conditioner of heating operation, as shown in Figure 4, this traditional detachable air conditioner comprises indoor unit 1, outdoor unit 2 and indoor-outdoor stube cable 3 that indoor unit 1 and outdoor unit 2 are electrically connected each other.
In indoor unit 1, an end of main switch 4 is connected to power supply 22, and the other end of main switch 4 is connected to indoor electronic control unit 50.Indoor fan motor 6 for example by the transistor motor of transistor circuit control, is connected to indoor electronic control unit 50.Main relay 7 carries out on by indoor electronic control unit 50, and heating operation relay 8 is connected when heating among Fig. 4, and defrost operation detection circuit 9 is used to detect the defrost operation.
On the other hand, outdoor unit 2 has outdoor electronic control unit 11, and electric power offers the outdoor electronic control unit of this unit from transformer 17, and defrost operational relay 10 and cross valve 12 are by outdoor electronic control unit 11 controls.Cross valve 12 has the function according to the coolant channel of cooling or heating operation selection cool cycles or heat cycles, cross valve 12 operates work by the on/off of the cross valve relay 15 of outdoor electronic control unit 11 controls, in addition, outdoor unit 2 has outdoor fan motor 13, as induction type motor, and the capacitor 14 that is used for outdoor fan motor.Outdoor fan motor 13 is driven and control by the on/off operation of the outdoor fan motor relay 16 of outdoor electronic control unit 11 controls, outdoor unit 2 also has a compressor 18 and compressor capacitor 19, as shown in Figure 4, and outdoor unit 2 has temperature sensor 20 and the outdoor air temperature sensor 21 that is used for outdoor heat converter.
The following describes the work of relation and each parts between traditional each parts of detachable air conditioner shown in Figure 4.
One end of indoor unit 1 main switch 4 is connected to power supply 22, and the main switch other end is connected to indoor electronic control unit 50, and when main switch 4 was connected, electric power was delivered to indoor electronic control unit 50.Indoor electronic control unit 50 beginning control operations also rotate indoor fan motor 6, because the rotation of indoor fan motor 6, room air is by the indoor heat converter (not shown), begin the circulation of room air thus, when the user sends the operation initiation command at this moment, indoor electronic control unit 50 makes main relay 7 actions, from 2 power supplies of 22 outdoor units of power supply, at this moment, electric power is delivered to compressor 18 from power supply 22, begins to rotate compressor 18, simultaneously, electric power is also delivered to outdoor fan motor 13 through outdoor fan motor relay 16 from power supply 22, begins the outdoor heat converter (not shown) is sent to outdoor air.
And electric power is also delivered to outdoor electronic control unit 11 through transformer 17 from power supply 22, and outdoor electronic control unit 11 begins control work.Connect to select the cross valve 12 of coolant channel, electric power is delivered to cross valve 12 through heating operation relay 8 and cross valve relay 15 like this, when electric power not when power supply 22 is delivered to cross valve 12, cold-producing medium is by being used for the passage of cool cycles.Like this, unless the user specifies heating operation and imports the heating operation order, otherwise heating operation relay 8 is remained on off-state by indoor electronic control unit 50, and under this state, this detachable air conditioner begins to cool down operation.
When the user sends the heating operation order immediately after above-mentioned cooling down operation begins, indoor electronic control unit 50 makes 8 actions of heating operation relay, and electric power is delivered to cross valve 12 from power supply 22 through cross valve relay 15, the selected coolant channel that is used for heat cycles of this operation, the beginning heating operation, at this moment, outdoor air is delivered to outdoor heat converter by outdoor fan motor 13, and the heat of outdoor air is transferred to cold-producing medium through outdoor heat converter, the result, cold-producing medium evaporation and gasification, cold-producing medium is delivered to indoor heat converter by compressor 18 subsequently.
Temperature sensor 20 is the temperature of sensing chamber's outer heat-exchanger constantly, and outdoor air temperature sensor 21 also constantly detects outside air temperature, when outside air temperature during heating becomes higher relatively, or the temperature of outdoor heat converter is when becoming higher relatively, the discharge pressure of compressor 18 is higher, causes the overload of compression 18 thus, for avoiding this overload of compressor, outdoor electronic control unit 11 is failure to actuate outdoor fan motor relay 16, reduces the heat exchange of outdoor heat converter thus.
On the other hand, in heating operation, when outside air temperature is low, frosting occurs at outdoor heat converter,, periodically carry out defrost operation in order to defrost, when carrying out defrost operation, outdoor electronic control unit 11 is failure to actuate cross valve relay 15, makes cross valve 12 be set to the cool cycles side.Simultaneously, outdoor electronic control unit 11 makes 10 actions of defrost operation detection relay, provide electric power to defrost operation detection circuit 9, and outdoor electronic control unit 11 notifies indoor electronic control unit 50 carrying out defrost operation, carries out cooling down operation in defrost operating period, by to outdoor heat converter heating remove frost, and, indoor electronic control unit 50 carries out control operation, for example controls cold air and enters the interior space, such as stopping or indoor fan motor 6 being slowed down.
Above-mentioned traditional detachable air conditioner requires to have family the exoelectron control module in outdoor unit, in general, the semiconductor element in electronic control unit than other element more to thermo-responsive.
When semiconductor is used in the outdoor electronic control unit, when during cooling they were by hot room outer air or direct sunlight heating, the semiconductor in outdoor electronic control unit may be heated to the temperature extremes that exceeds its permission and cause thermal runaway.For addressing this problem, basically be the measures such as radiator of taking for example to increase electronic component in the outdoor electronic control unit, the result, traditional outdoor electronic control unit has the factor that reduces serviceability because of having increased parts number, and, traditional detachable air conditioner all has electronic control unit at indoor unit and outdoor unit, causes increasing product cost.
And, some traditional detachable air conditioners only carry out defrost operation control by indoor electronic control unit during heating operation, but, this indoor electronic control unit requires to be released by the electric current of the heat exchanger temperature of indoor unit and the circuit of flowing through the heat exchanger temperature of outdoor unit, in addition, when proposing various model, must determine various setting values selectively to first model, weakened the versatility in the defrost operation control thus.
An object of the present invention is to propose a kind of split-type air conditioner device, but its high temperature resistance and the defrost control that obtains to have versatility, even and also can be accurately between the period of heating of the low cold district of outside air temperature and suitably carry out defrost operation control.
Another object of the present invention is to propose a kind of detachable air conditioner, and it has removed outdoor electronic control unit and has strengthened maintainability.
For reaching above-mentioned purpose, detachable air conditioner of the present invention has an indoor unit and an outdoor unit, comprising:
Temperature-detecting device is arranged in the outdoor unit to detect the frosting situation of heat exchanger in the outdoor unit;
Receiving system is arranged on and is used to receive the frosting detection signal of sending here from temperature-detecting device in the indoor unit;
Electronic-controlled installation when receiving system is received the frosting detection signal of sending here at certain time intervals continuously, sends defrost operation commencing signal;
The defrost control device carries out the defrost operation when receiving defrost operation commencing signal; And
Jockey is used for indoor unit is connected electrically to outdoor unit.
And detachable air conditioner of the present invention has an indoor unit and an outdoor unit, comprising:
First temperature-detecting device is arranged in the outdoor unit to detect the frosting state of heat exchanger in the indoor unit;
Second temperature-detecting device is arranged in the indoor unit to detect the temperature of heat exchanger in the indoor unit;
Receiving system is arranged on and is used to receive the frosting detection signal that first temperature-detecting device is sent here in the indoor unit;
Electronic-controlled installation, when determining that device sends defrost operation commencing signal when thinking that the temperature of heat exchanger of outdoor unit is not more than a predetermined temperature, and when frosting detection signal that first temperature-detecting device sends is delivered to receiving system at certain time intervals continuously and when the temperature detection signal that second temperature-detecting device detects is delivered to receiving system, send table and search;
The defrost control device carries out the defrost operation when defrost operation commencing signal is sent here; And
Jockey is used for indoor unit is connected electrically to outdoor unit.
Because said structure of the present invention, be arranged on the frosting state of the temperature-detecting device sensing chamber outer heat-exchanger in the outdoor heat converter of outdoor unit, and the frosting state of outdoor heat converter is sent to the electronic control unit that is arranged in the indoor unit.Electronic control unit sends the defrost operational order then.So detachable air conditioner of the present invention does not have the electronic control unit in the outdoor unit just can suitably carry out defrost operation control.As a result, the defrost operation control unit can be with the low cost manufacturing, and the maintainability of enhancing is arranged.In addition, detachable air conditioner of the present invention can realized better defrost operation control aspect accuracy and the versatility, thereby the frosting of outdoor heat converter/defrosting situation is directly detected by the temperature survey of outdoor heat converter.
Although proposed new features of the present invention particularly in appending claims, structure of the present invention and content and other purpose and characteristics will be owing to understanding better below in conjunction with being described in detail of accompanying drawing.
Fig. 1 is the circuit structure diagram according to a kind of detachable air conditioner that can cool off and heat of one embodiment of the invention;
Fig. 2 is the flow chart of the control carried out when beginning according to defrost operation of the present invention of expression;
Fig. 3 represents according to the present invention when defrost operation finishes the flow chart of the control of being carried out; And
Fig. 4 is the circuit structure diagram of traditional detachable air conditioner that can cool off and heat.
It should be understood that these figure partly or entirely for explanation schematically illustrates, thereby the actual relative size and the position of parts shown in need not to represent.
An embodiment referring to Fig. 1 to 3 explanation detachable air conditioner of the present invention.
Fig. 1 is the circuit structure diagram that can cool off and heat this embodiment of detachable air conditioner, and Fig. 2 is the flow chart of the control carried out when this embodiment begins defrost operation, and Fig. 3 is the flow chart of the control carried out when this embodiment defrost operation finishes.
As shown in Figure 1, detachable air conditioner comprises that an indoor unit 100, one outdoor units 200 and are used to indoor-outdoor stube cable 300 that indoor unit 100 and outdoor unit 200 are electrically connected each other.
In indoor unit 100, one end of main switch 4 is connected to power supply 22, the other end of main switch 4 is connected to electronic control unit, one indoor fan motor 6, for example by the transistor motor of transistor circuit control, be connected to electronic control unit 5, main relay 7, heating operation relay 8 and outdoor fan motor relay 16 are made on/off by electronic control unit 5.Control heating operation relay 8 is connected when the heating operation mode.
On the other hand, outdoor unit 200 is not provided with electronic control unit.As mentioned above, only indoor unit 100 is provided with electronic control unit 5, and cross valve 12 is made on by heating operation relay 8, and cross valve 12 has the effect according to cooling or heating operation selection cool cycles or heat cycles coolant channel.
In addition, outdoor unit 200 has outdoor fan motor 13, induction motor for example, and the capacitor 14 that is used for outdoor fan motor, outdoor fan motor 13 is connected to outdoor fan motor selector 25, the latter drives and control outdoor fan motor 13, and the splicing ear X of outdoor fan motor selector 25 is connected to outdoor fan motor relay 16 through a CT (current transformer) 24, for example solid-state relay (SSR).The splicing ear Y of outdoor fan motor selector 25 is connected to heating operation relay 8, so that cross valve 12 is made on.
As shown in Figure 1, outdoor unit 200 has compressor 18, and a known compressor capacitor 19 that is connected to compressor 18.And, outdoor unit 200 has a mechanical type Temperature Detector 23, temperature sensor as the outdoor heat converter (not shown), the mechanical type Temperature Detector 23 that is arranged in the outdoor heat converter comprises a bimetal leaf or analog, variations in temperature with sensing chamber's outer heat-exchanger, as a result, the frosting/defrost state of outdoor heat converter is detected by mechanical type Temperature Detector 23.Make the operating temperature that switches on and off of mechanical type Temperature Detector 23 action will consider the thermal response of the rate of rise of frosting of outdoor heat converter and defrosting degree and mechanical type Temperature Detector 23 and each factors vary and set.In mechanical type Temperature Detector 23 of the present invention, " connection " operating temperature is set in-3 ℃, and " disconnection " operating temperature is set at 4 ℃.
The following describes the work of relation and parts between each parts of detachable air conditioner of present embodiment.Although the detachable air conditioner of present embodiment is used for cooling and heating, do not narrate the work of each parts during the cooling down operation here, because cooling down operation is not with directly relevant according to operation of the present invention.
When the user sends the heating operation initiation command under above-mentioned condition, then electronic control unit 5 is connected main relay 7, provide electric power from power supply 22 to outdoor unit 200 thus, meanwhile, electric power is delivered to compressor 18, and compressor 18 begins to rotate, and, electric power is also delivered to outdoor fan motor 13 from power supply 22 through outdoor fan motor relay 16, and beginning is sent to outdoor air to outdoor heat converter, and relay 16 can be a solid-state relay (SSR) for example.And outdoor fan motor relay 16 is connected, and outdoor fan control relay 26 is connected thus, and in addition, meanwhile, electronic control unit 5 is connected heating operation relay 8, connects cross valve 12 thus.As a result, the selected coolant channel that is used for heat cycles, beginning heating operation.
CT24 in the electronic control unit 5 plays a part the receiving system of the detection signal of mechanical type Temperature Detector 23, and in the heating operation that passes through, CT24 discerns certain current value.Under these conditions, when the temperature of outdoor heat converter becomes less than-3 ℃, then mechanical type Temperature Detector 23 is connected, and the connection of outdoor fan motor selector 25 switches to splicing ear Y from splicing ear X, the result, the electric power of delivering to outdoor fan motor 13 through splicing ear X of outdoor fan motor selector 25 is sent here from the splicing ear Y that receives heating operation relay 8, the result, no current flows through the circuit of the splicing ear X of outdoor fan motor selector 25, and the current value at CT24 place fades to from a certain value and is almost 0.Because detecting this electric current of the CT24 that flows through changes, electronic control unit 5 identifies mechanical type Temperature Detector 23 and has moved, send the defrost operation initiation command according to the flow process of Fig. 2, Fig. 2 is the flow chart of the control carried out when defrost operation begins by present embodiment of expression thereupon.
Referring to Fig. 2, mechanical type Temperature Detector 23 is at first connected, and the current value of CT24 drops to and is almost 0 (step 101) in the electronic control unit 5 of flowing through subsequently.The checkout gear of electronic control unit 5 confirms that relay 16 is in " connection " state (step 102), the dead time of confirming CT24 with timer has continued a predetermined time interval (for example 50 seconds) or longer (step 103), in other words, electronic control unit 5 sends the defrost operation commencing signal when the frosting detection signal of mechanical type Temperature Detector 23 is continued to receive in a period of time interval by CT24, and, determine that device selects a defrost operation to forbid the time interval (step 104) according to the current counting N that is stored in the defrost operation in the counter of electronic control unit 5.When the counting N of defrost operation is 0, determine that device determines running time behind last once defrost operation whether to be no less than defrost operation and to forbid the time interval (as 30 minutes), when be not less than 30 minutes running time, the counting N of defrost operation increases by 1 (step 107), and connects timer with the counting defrost operation time interval (step 108).
On the other hand, when the counting N at step 104 defrost operation is judged as 1 or bigger, when determining then that device determines that running time after last time, defrost operation finished whether being not less than another defrost operation at interval forbids (as 60 minutes) (step 105) at interval, when be not less than 60 minutes running time at interval, then the current counting N of defrost operation increases by 1 (step 107), and connects timer with the counting defrost operation time interval (step 108).
When the dead time certain time of CT24 at interval, and superly at interval reach predetermined defrost operation and forbid the time interval running time, determine that then device makes the defrost operation number that is stored in the counter increase by 1.Determine that subsequently device sends the defrost operation commencing signal, make the timer action, calculate the above-mentioned frost operating time at interval.
When the defrost operation signal is sent, electronic control unit 5 turn-offs heating operation relay 8, turn-off cross valve 12 and outdoor fan motor 13 thus, when such shutoff cross valve 12 and outdoor fan motor 13, the beginning defrost operation passes through defrost operation, cold-producing medium carries out cooling down operation through being used for the passage of cool cycles.
Thereafter, continue to carry out cooling down operation, the frost fusing in the outdoor heat converter is when the temperature of mechanical type Temperature Detector 23 is raised to 4 ℃, mechanical type Temperature Detector 23 is turned off, and electric power is delivered to outdoor fan motor 13 from the splicing ear X of outdoor fan motor selector 25 once more.So outdoor fan motor 13 is started once more, the electric current CT24 that flows through, the result, electronic control unit 5 identifies mechanical type Temperature Detector 23 and has been turned off.Send defrost operation the finish command according to flow chart among Fig. 3 then.Fig. 3 is the flow chart of expression according to present embodiment control when defrosting finishes.
Referring to Fig. 3, mechanical type Temperature Detector 23 at first is turned off, and the current value of the CT24 that flows through becomes a certain value from being almost 0, determines that then device turn-offs outdoor fan motor relay 16 once (step 202), after this, determines that device stops outdoor fan motor 13 again.Then, determine that calculation element in the device mat electronic control unit 5 and timer calculate the defrost time interval t that begins " disconnection " state that changes to (that is, the current value of " disconnection " STA representation CT24 becomes greater than 0 and arrives a predetermined value) to mechanical type Temperature Detector 23 from defrost operation.In other words, determine device by the current value of CT24 be almost 0 the time be carved into CT24 current value become greater than 0 the moment and calculate defrosting time t at interval.Note, in the present embodiment, the moment that the beginning of defrost operation is connected corresponding to mechanical type Temperature Detector 23.
Electronic control unit 5 is determined the defrost operation time interval, it is corresponding to the defrosting time interval t that calculates according to table, and continue defrost operation in the time interval at defrost operation, when defrosting time when at interval t is in this example less than 1 minute, then executed defrost operation 1 minute.When defrosting time at interval t stop defrost operation more than 1 minute and in the time less than 3 minutes scope, when defrosting time at interval more than 3 minutes and less than 6 minutes the time, carry out 1 minute defrost operation, stop subsequently.When defrosting time at interval t more than 6 minutes and less than 9 minutes the time, continues 2 minutes defrost operations to stop subsequently, when defrosting time at interval t be 9 minutes or when longer, defrost operation continuation 3 minutes stops subsequently.
As mentioned above, electronic control unit 5 sends defrost operation at the predetermined defrost operation of process and ceases and desist order after the time interval, stop defrost operation, so total defrost operation time interval is defined as from defrost operation and begins to add according to the fixed determined defrost operation of the table duration according to the defrosting time interval to the time interval that mechanical type Temperature Detector 23 turn-offs the moment.But, for avoiding producing extraordinary noise, executed defrost operation at least 1 minute at the select time of cross valve 12, and no matter begin what to be to the time between the moment that mechanical type Temperature Detector 23 turn-offs from defrost operation.In the present embodiment, Zui Da total defrost operation time interval is set at 12 minutes.
As shown in Figure 1,, carry out outdoor fan control, raise with the pressure that prevents compressor 18 by the outdoor fan control relay 26 of outdoor fan motor relay 16 controls, and no matter " connection " or " disconnection " state of mechanical type Temperature Detector 23.
When mechanical type Temperature Detector 23 during at " disconnection " state, outdoor fan motor 13 is the control on/off by the on/off operation of outdoor fan motor relay 16.
On the other hand, when mechanical type Temperature Detector 23 is connected, make 26 actions of outdoor fan control relay by turn-offing outdoor fan motor relay 16.The connection of outdoor fan motor selector 25 forwards splicing ear X to from splicing ear Y.So outdoor fan motor 13 is in can provide the state of electric power to it again from the splicing ear X of outdoor fan motor selector 25.But because outdoor fan motor relay 16 is in " disconnection " state, thereby outdoor fan motor 13 also is in " disconnection " state.
And, when mechanical type Temperature Detector 23 is in " connection " state, the connection of outdoor fan motor selector 25 switches to splicing ear Y owing to the contact of outdoor fan motor relay 16 from splicing ear X, so electric power is delivered to outdoor fan motor 13 from power supply 22 through heating operation relay 8.
As a result, outdoor fan can be controlled by outdoor fan motor relay 16, and irrelevant with " connection " or " disconnection " state of mechanical type Temperature Detector 23.
The embodiment of above-mentioned detachable air conditioner further has indoor temperature detector (not shown), to detect the temperature of heat exchanger in the indoor unit 100, when the indoor temperature detector detects temperature at the indoor heat converter place and is higher than predetermined value, the indoor temperature detector is sent to electronic control unit 5 with detection information, and the temperature information of indoor heat converter is used as the defrost operation of storage in electronic control unit 5 to begin one of condition and included.When the temperature of indoor heat converter reaches predetermined value or when higher, send the defrost operation initiation command, begin in the condition by this indoor temperature checkout gear being set and the state of temperature at indoor heat converter place being included in defrost operation as mentioned above, can more suitably select defrost operation zero hour.
Under the situation of detachable air conditioner outdoor unit 200 frostings, the rate of rise of frost has difference, depending on owing to the temperature of outdoor heat converter is reduced by outdoor low temperature increases still frost owing to stop to reduce when avoiding compressor pressure to raise compressor pressure at outdoor fan and make and whitely increase in higher relatively outside air temperature in outdoor low temperature, under a kind of situation in back, because the pressure of compressor reduces when outdoor fan stops, frost increases in higher relatively outside air temperature gradually, and this moment, the on/off of control room external fan raise with the pressure that prevents compressor.So, at defrost operation with that the so-called normal heating operating time between the defrost operation at interval can be than under last situation under one situation of back is big next time, because this cause, under one situation of back, can postpone defrost operation zero hour, the room conditioning temperature can be as much as possible little to departing from of design temperature like this.
As mentioned above, in the detachable air conditioner of present embodiment, the indoor temperature detector of indoor heat converter setting by measuring the high pressure conditions that temperature detects indoor heat converter, and is delivered to electronic control unit 5 with temperature information.Electronic control unit 5 forethoughts concern between the low pressure of the high pressure of indoor heat converter 5 and outdoor heat converter, so, electronic control unit 5 identifies the high pressure conditions of indoor heat converter according to temperature information, and estimate the low pressure situation of outdoor heat exchange, when electronic control unit 5 identifies low voltage value and is not more than the necessary predetermined value of defrost operation of outdoor heat exchange, send the defrost operation initiation command, like this, in the detachable air conditioner of present embodiment, use the rate of rise of estimating frost in the outdoor unit 200 from the temperature information of indoor heat converter, and the temperature information from indoor heat converter is included as one of defrost operation initiation command condition, therefore, might determine defrost operation zero hour exactly, the result, in the detachable air conditioner of present embodiment, indoor temperature and design temperature to depart from because of prolonging the heating operation time as much as possible and postponing defrost operation zero hour be minimum.
In addition, when having determined total defrost operation during the time interval, begin to carry out Defrost operation control to the storage list that mechanical type Temperature Detector 23 turn-offs the information in the time interval of operating beginning according to the flow that comprises the indoor fan place with from defrost operation.Like this, can be at the defrost operation of more suitably constantly carrying out present embodiment.
According to the present invention, in the outdoor unit 200 of detachable air conditioner of the present invention, the electronic control unit that comprises semiconductor devices is not set.So the defrost operation control module can be done more high temperature resistantly, cost is low, and improves maintainability, and in addition, the frosting/defrost state of outdoor heat converter is directly detected by the temperature of measuring chamber outer heat-exchanger.So, when the different model of design, need not to determine design temperature and other value.As a result, the detachable air conditioner of present embodiment can have high adaptability.
In split type empty air adjusting machine according to the present invention, mechanical type temperature-detecting device (promptly being arranged on the mechanical type Temperature Detector in the outdoor unit heat exchanger), detect the frosting state at outdoor unit heat exchanger place, checkout gear is delivered to electronic control unit in the indoor unit with the driving power circuit of outdoor fan motor with the frosting condition information.Electronic-controlled installation (being the electronic control unit of indoor unit), frosting condition information according to the outdoor unit heat exchanger place that sends calculates the defrost operation time interval, and send the defrost operation initiation command, because detachable air conditioner of the present invention constitutes as mentioned above, its control that can reliablely and stablely defrost with the electronic-controlled installation that comprises the defect semiconductor device in the indoor unit.
In detachable air conditioner of the present invention, the mechanical type temperature-detecting device that is provided with in the indoor heat converter is by measuring the high pressure conditions that its temperature detects compressor, and according to the low pressure situation of temperature identification outdoor heat converter, when the outdoor heat converter of detachable air conditioner of the present invention detects low pressure and is not more than necessary its predetermined value of outdoor heat converter defrost operation, detachable air conditioner begins defrost operation, the result, can determine defrost operation zero hour exactly, like this, in split type accent pocket of the present invention, departing from of indoor temperature and design temperature can be by prolonging the heating operation time as far as possible and postponing that defrost operation begins and be minimum.
In detachable air conditioner of the present invention, the indoor and outdoor that can be used for defrost operation control with the same quad of traditional detachable air conditioner is connected.Therefore, in detachable air conditioner of the present invention, outdoor fan can be controlled to avoid compressor pressure to raise, even be arranged in the outdoor heat converter mechanical type temperature-detecting device when action too, in other words, reduced cost by removing electronic-controlled installation good and expensive in the outdoor unit, and do not change traditional four-core indoor-number of outdoor stube cable just can obtain the suitable control that conforms to this air regulator performance.
The electronic control unit of detachable air conditioner of the present invention is considered the variation of the thermal response of checkout gear and various factors and is preestablished.So electronic control unit detects the state that must carry out defrost operation exactly, electronic control unit also detects the state that must stop defrost operation.Like this, the structure of this detachable air conditioner can be carried out defrost operation suitably.
Detachable air conditioner of the present invention outputs to from the time of the defrost operation end signal of the mechanical type temperature-detecting device in outdoor unit output according to the frosting detection signal estimates the frosting degree that produces at outdoor unit heat exchanger place, and detachable air conditioner begins to the time interval of input defrost operation end signal being added to the correction time that changes according to this time interval from defrost operation subsequently.As a result, defrosting time can have appropriate value at interval, and detachable air conditioner is also proofreaied and correct the thermal response of mechanical type temperature-detecting device and the variation of each factor.As a result, even detachable air conditioner of the present invention also can carry out defrost operation control in pin-point accuracy ground when outside air temperature is low.
A kind of like this possibility is arranged, that is: frosting degree is less in the outdoor unit of detachable air conditioner of the present invention, the time interval between this has finally shortened the output of frosting detection signal and has exported from the frosting EO signal of mechanical type temperature-detecting device in the outdoor unit.In this case, if cross valve is configured to switch immediately under above-mentioned state, then can when switching, produce unusual big noise, for addressing this problem, in the detachable air conditioner of the present invention, rigid definite when the time interval that outputs to the output of frosting EO signal from the frosting detection signal is not more than a predetermined value, be separated with a predetermined value between the mandatory provision defrosting time, like this, this extraordinary noise that produces when switching cross valve is reduced to minimum.
Even in traditional defrost operation control, also there is defrost operation to forbid the time interval, finish time interval of beginning to defrost operation next time from defrost operation with regulation, like this, preset time at interval in pressure forbid that defrost operation, this defrost operation forbid that the time interval is constant, irrelevant with the number of times of defrost operation, but the temperature of outdoor heat converter is higher relatively when defrost operation finishes, and this moment, frost relatively was not easy to increase.So, defrost operation after repeating defrost operation several times forbids that the time interval should be greater than forbidding the time interval when air-conditioner brings into operation, in general, the time interval when repeating behind the defrost operation several times to finish being greater than when air-conditioner brings into operation to the first time to the time interval that defrost operation next time begins that defrost operation begins from defrost operation, in addition, having increasesd slowly after carrying out defrost operation several times, because these causes, in detachable air conditioner of the present invention, counting is forbidden the time interval from the air-conditioner number of times of defrost operation that brings into operation so that suitably control defrost operation.
In detachable air conditioner of the present invention, defrost operation number of times after the counter calculating that is provided with in the outdoor unit brings into operation from air-conditioner only just resets to the defrost operation number of times when it adds that the electronic control unit of the receiving system of operation beginning/stop signal is received stop signal with opposing.But, when selecting heating cooling mode of operation, do not reset in this numeral.Like this, with suitable timing reset defrost operation number of times, not reset be owing to underlying cause to the number of times of defrost operation when selecting heating/cooling down operation line mode according to detachable air conditioner of the present invention.The temperature of certain outdoor heat converter becomes higher when the heating operation mode switches to the cooling down operation mode.If the defrost operation number of times resets when mode of operation is selected, then remove action row and forbid that the correction in the time interval almost is skimble-skamble, also shortened the heating operation time simultaneously, this can cause indoor temperature to depart from design temperature.
In detachable air conditioner of the present invention, CT, timer and the calculation element that is arranged on the indoor fan drive circuit in the indoor unit is used for the outer flow of counting chamber internal fan, until the beginning defrost operation, and, determine the defrost operation time interval with definite device and table, when the flow of indoor fan changed, the frosting degree that the outdoor heat converter place produces also changed.So detachable air conditioner of the present invention is according to the flux modification defrost operation time interval at indoor fan place, so that the defrost operation time interval suitably to be set.Prolong the heating operation time as far as possible longways thus.And detachable air conditioner of the present invention is by the temperature of mechanical type temperature-detecting device sensing chamber outer heat-exchanger, to carry out the defrost operation control of pin-point accuracy.
In detachable air conditioner of the present invention, be used as the running status that outdoor fan moves checkout gear and is arranged on the relay sensing chamber external fan in the indoor unit, when definite device is confirmed outdoor fan at " disconnection " state, be left in the basket from the frosting detection signal that is arranged on mechanical type temperature-detecting device in the outdoor unit, thereby can not carry out defrost operation control.Considering that carrying out outdoor fan controls under the situation that prevents the compressor pressure rising, adopts this operation to prolong the time interval of heating operation as far as possible.When the external fan of control room, detachable air conditioner of the present invention is ignored the frosting detection signal from the mechanical type temperature-detecting device, thereby defrost operation zero hour suitably is set.
Although narrated the present invention with present preferred embodiment, this announcement should be understood and restriction should be do not regarded as, undoubtedly, concerning the one skilled in the art, after having read above-mentioned explanation, obviously can make various changes and modification.Like this, appended claim should be believed to comprise all changes and the modification in essence of the present invention and the scope.
Claims (10)
1. a detachable air conditioner has an indoor unit and an outdoor unit, it is characterized in that comprising:
Temperature detecting unit is arranged in the described outdoor unit to detect the frosting situation of heat exchanger in the described outdoor unit;
Receiving system is arranged on and is used to receive the frosting detection signal of sending here from described temperature-detecting device in the described indoor unit;
Electronic-controlled installation when described receiving system is received described frosting detection signal at certain time intervals continuously, sends defrost operation commencing signal;
The defrost control device carries out the defrost operation when receiving that commencing signal is operated in described defrost; And
Jockey is used for described indoor unit is connected electrically to described outdoor unit.
2. a detachable air conditioner has an indoor unit and an outdoor unit, it is characterized in that, comprising:
First temperature-detecting device is arranged in the described outdoor unit to detect the frosting state of heat exchanger in the described outdoor unit;
Second temperature-detecting device is arranged in the described indoor unit to detect the temperature of heat exchanger in the described indoor unit;
Receiving system is arranged on and is used to receive the frosting detection signal of sending here from described second temperature-detecting device in the described indoor unit;
Electronic-controlled installation, be identified as and send defrost operation commencing signal when being not more than a predetermined temperature when the temperature of the described heat exchanger of described outdoor unit is determined device, and the frosting detection signal that sends at described first temperature-detecting device certain hour every interior when delivering to described receiving system continuously and the temperature detection signal that detects of described second temperature-detecting device send table when delivering to described receiving system and search;
The defrost control device carries out the defrost operation when defrost operation commencing signal is sent here; And
Jockey is used for described indoor unit is connected electrically to described outdoor unit.
3. a detachable air conditioner as claimed in claim 1 is characterized in that, described jockey comprises:
First connecting line is used for connecting the power supply that the described temperature-detecting device that is arranged on described outdoor unit arrives described indoor unit;
Second connecting line is used to connect the outdoor fan motor of the circuit of described temperature-detecting device, described outdoor unit and the described power supply that cross valve arrives described indoor unit;
The 3rd connecting line is used to connect the described power supply of one of the splicing ear of described cross valve circuit and outdoor fan motor selecting arrangement to described indoor unit; And
The 4th connecting line is used for described outdoor fan motor circuit is connected to through another splicing ear of described outdoor fan motor selecting arrangement the power supply of described indoor unit.
4. a kind of detachable air conditioner as claimed in claim 1, it is characterized in that, described temperature-detecting device comprises a temperature step switch, a position of the switch described switch being set works in 0 ℃ or following temperature range, and work in the temperature range more than 0 ℃ in another position of the switch, with the frosting/defrost state of the described heat exchanger that detects described outdoor unit.
5. a kind of detachable air conditioner as claimed in claim 1, it is characterized in that, be arranged on the defrost operation done state that described temperature-detecting device checkout gear in the described outdoor unit detects the described heat exchanger in the described outdoor unit, described receiving system receive send here from described temperature-detecting device defrost operation detection of end signal as input signal, described electronic-controlled installation calculates from sending described defrost operation commencing signal to the time interval that receives described input signal with calculation element according to the described input signal of described receiving system, and described electronic-controlled installation is searched definite defrost operation time interval with definite device and table after receiving described input signal.
6. detachable air conditioner as claimed in claim 1, it is characterized in that being identified as when being no more than predetermined value by a timer described receiving system and the described indoor unit to the time interval that receives described defrost operation end signal when beginning, just force to determine a defrost operation time interval from defrost operation.
7. detachable air conditioner as claimed in claim 1, it is characterized in that described electronic-controlled installation calculates the defrost operation number of times that brings into operation and count from air-conditioner with the counter in the described indoor unit, the defrost operation number of times is delivered to memory circuit, search definite defrost operation according to the defrost operation number of times with definite device and table and forbid the time.
8. detachable air conditioner as claimed in claim 1, it is characterized in that described electronic-controlled installation calculates the defrost operation number of times that brings into operation and count from air-conditioner with the counter in the described indoor unit, the defrost operation number of times of delivering to memory only receives at the described receiving system that receives beginning/stop signal and describedly just resets when stopping the number of stopping, and do not reset when the selection mode of operation.
9. detachable air conditioner as claimed in claim 1, it is characterized in that timer and the calculation element counting chamber internal fan flow of described electronic-controlled installation in the indoor fan working voltage checkout gear indoor unit, until the beginning defrost operation, and search definite defrost operation time interval with definite device and table.
10. detachable air conditioner as claimed in claim 1, it is characterized in that the described electronic-controlled installation running status of the outdoor fan operation checkout gear sensing chamber external fan that is arranged in the described indoor unit, and when definite device is confirmed described outdoor fan at " disconnection " state, described electronic-controlled installation is not in response to described frosting detection signal, and defrost operation control is inoperative thus.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7268207A JPH09113075A (en) | 1995-10-17 | 1995-10-17 | Indoor/outdoor separation type air conditioner |
| JP268207/95 | 1995-10-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1156809A true CN1156809A (en) | 1997-08-13 |
| CN1090736C CN1090736C (en) | 2002-09-11 |
Family
ID=17455416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96122652A Expired - Fee Related CN1090736C (en) | 1995-10-17 | 1996-10-17 | Split type air conditioner |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0789201B1 (en) |
| JP (1) | JPH09113075A (en) |
| CN (1) | CN1090736C (en) |
| ES (1) | ES2182936T3 (en) |
| MY (1) | MY117758A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019214254A1 (en) * | 2018-05-07 | 2019-11-14 | 广东美的暖通设备有限公司 | Air conditioner defrosting control method and device thereof |
| CN110631186A (en) * | 2018-06-25 | 2019-12-31 | 青岛海尔空调器有限总公司 | Defrosting control method and device for air conditioner |
| CN110926093A (en) * | 2019-12-06 | 2020-03-27 | 四方科技集团股份有限公司 | On-demand defrosting method for air cooler |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3815463B2 (en) * | 2003-08-27 | 2006-08-30 | 松下電器産業株式会社 | Separate air conditioner |
| JP2009085563A (en) * | 2007-10-03 | 2009-04-23 | Panasonic Corp | Air conditioner |
| MX2017009024A (en) | 2015-01-08 | 2018-09-12 | Bry Air Asia Pvt Ltd | Split type sorption air conditioning unit. |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6017976B2 (en) * | 1981-03-24 | 1985-05-08 | シャープ株式会社 | air conditioner |
| JPS5946439A (en) * | 1982-09-08 | 1984-03-15 | Toshiba Corp | Control signal circuit of split type air conditioner |
| JPH07190458A (en) * | 1993-12-28 | 1995-07-28 | Matsushita Electric Ind Co Ltd | Indoor/outdoor unit separate type air conditioner |
| JP3680336B2 (en) * | 1995-01-27 | 2005-08-10 | 松下電器産業株式会社 | Internal / external separation type air conditioner |
-
1995
- 1995-10-17 JP JP7268207A patent/JPH09113075A/en active Pending
-
1996
- 1996-10-14 MY MYPI96004257A patent/MY117758A/en unknown
- 1996-10-14 EP EP96116437A patent/EP0789201B1/en not_active Expired - Lifetime
- 1996-10-14 ES ES96116437T patent/ES2182936T3/en not_active Expired - Lifetime
- 1996-10-17 CN CN96122652A patent/CN1090736C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019214254A1 (en) * | 2018-05-07 | 2019-11-14 | 广东美的暖通设备有限公司 | Air conditioner defrosting control method and device thereof |
| US11073297B2 (en) | 2018-05-07 | 2021-07-27 | Gd Midea Heating & Ventilating Equipment Co., Ltd. | Air conditioner defrosting control method and device thereof |
| CN110631186A (en) * | 2018-06-25 | 2019-12-31 | 青岛海尔空调器有限总公司 | Defrosting control method and device for air conditioner |
| CN110631186B (en) * | 2018-06-25 | 2021-07-23 | 重庆海尔空调器有限公司 | Defrosting control method and device for air conditioner |
| CN110926093A (en) * | 2019-12-06 | 2020-03-27 | 四方科技集团股份有限公司 | On-demand defrosting method for air cooler |
| CN110926093B (en) * | 2019-12-06 | 2021-07-23 | 四方科技集团股份有限公司 | On-demand defrosting method for air cooler |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2182936T3 (en) | 2003-03-16 |
| EP0789201A3 (en) | 2000-01-19 |
| JPH09113075A (en) | 1997-05-02 |
| EP0789201A2 (en) | 1997-08-13 |
| CN1090736C (en) | 2002-09-11 |
| MY117758A (en) | 2004-08-30 |
| EP0789201B1 (en) | 2002-08-28 |
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