CN109073264A - Conditioner - Google Patents

Abstract

The present invention provides a kind of conditioner, it cold and hot can run simultaneously, running either mode operation is run or heated with cooling in a part of indoor unit in multiple indoor units as air-conditioning object on one side, carry out heating operation or cooling operation under the mode different from the operational mode of above-mentioned a part of indoor unit in remaining indoor unit other than a part of indoor unit on one side, the conditioner has indoor heat exchanger (41a~41d), indoor fan (49a~49d), compressor (11), indoor expansion valve (42a~42d), outdoor heat exchanger (14), outdoor fan (19), four-way valve (13), outdoor expansion valve (15), cold and hot switch unit (30a~30d), and according to indoor heat exchanger (41a~41d) Air conditioning capacity control the operation control device (28) of the revolving speed of outdoor fan (19), thus, it is possible to provide it is a kind of being capable of steadily cold and hot while operation conditioner.

Description

Conditioner

Technical field

The present invention relates to a kind of conditioners, specifically, being for example related to that a kind of Mobyneb is cold and hot while air Cold and hot in regulating device while while running, can adjust the air conditioning dress of the ability of non-master side operation indoor unit well It sets.

Background technique

It is known it is a kind of in building, commercially arrange etc. in can be independent and be filled simultaneously using the air conditioning cooled and heated It sets (Mobyneb cold and hot while conditioner).In the conditioner, the cooling operation and heating of machine indoors The circulating direction for running the balance for considering cooling capacity and heating efficiency in the case where being mixed and determining refrigerant.Specifically Ground is said, in the case where cooling capacity is big, switches flow path in such a way that outdoor heat exchanger becomes condenser.The fortune of this flow path Row is referred to as " cooling main body ".On the other hand, in the case where heating efficiency is big, become the side of evaporator with outdoor heat exchanger Formula switches flow path.The operation of this flow path is referred to as " Heating body ".

As multifunctional cold and heat conditioner simultaneously, it is known that technology described in a kind of patent document 1.In patent document A kind of conditioner is described in 1, is had multiple use units, heat source unit and relay unit, is able to carry out cooling Operation and heating operation.Moreover, describing what cooling operation and heating operation in multiple operations using unit were mixed In the case of, the aggregate value of the cooling load relationship amount using unit based on cooling operation and heating operation using unit The air conditioner load relationship quantitative change of the operation (main operation) of the biggish side of aggregate value is in the aggregate value of heating load relationship amount It is maximum to use unit, control the running speed of compressor.In addition, the operation (secondary operation) based on the lesser side of aggregate value Air conditioner load relationship quantitative change be it is maximum use unit, control heat source side pressure fan air quantity.

Existing technical literature

Patent document 1: Japanese Unexamined Patent Publication 2011-112233 bulletin

Summary of the invention

Subject to be solved by the invention

In the technology described in patent document 1, cold and hot while when running, outdoor draft fan is controlled, change is supplied to room Thus the air mass flow of outer heat-exchanger controls the heat exchange amount of outdoor air with the refrigerant for flowing through outdoor heat exchanger.Cause This, in order to inhibit heat exchange amount as far as possible, and stops outdoor draft fan.But even if outdoor draft fan stops, outdoor heat is handed over The heat dissipation of parallel operation also due to free convection and carry out, to be unable to fully inhibit heat exchange amount sometimes.

At this point, for example becoming excessive as the cooling capacity mainly run or as secondary in the case where cooling main body The heating efficiency of operation becomes insufficient.On the other hand, in the case where Heating body, become as the heating efficiency mainly run Excessive or as secondary operation cooling capacity becomes insufficient.Thus, in the technology described in patent document 1, it is cold and hot simultaneously When operation, according to atmospheric condition, cooling operation sometimes or heating operation become excessively insufficient.It is used therefore, it is impossible to sufficiently meet Person's demand.

The present invention is completed in view of this problem, and the problem to be solved in the present invention is, providing one kind can stablize Ground it is cold and hot and meanwhile operation conditioner.

Means for solving the problems

To solve the above-mentioned problems, the present inventors are attentively studied.Finally, it is found that following opinion.That is, this The ancestor of invention means a kind of conditioner, cold and hot can run simultaneously, i.e., on one side as the multiple of air-conditioning object With cooling operation or heating running either mode operation in a part of indoor unit in indoor unit, on one side in addition to this one It is heated in remaining indoor unit other than the indoor unit of part with the mode different from the operational mode of above-mentioned a part of indoor unit Operation or cooling operation, the conditioner are characterized in that having: multiple indoor heat exchangers are respectively arranged at It states in multiple indoor units；Indoor fan blows room air to the indoor heat exchanger, the room air and refrigerant it Between carry out heat exchange；Compressor is connected by being piped with above-mentioned indoor heat exchanger, transported to the circulation piping Refrigerant is compressed；First expansion mechanism, from the compressor, which is set to the upper of refrigerant flow direction Side or downstream side are swum, makes to expand by the refrigerant of above-mentioned piping；Outdoor heat exchanger, with above-mentioned indoor heat exchanger, on It states compressor and above-mentioned first expansion mechanism constitutes refrigeration cycle together；Outdoor fan blows the outdoor heat exchanger Outdoor air carries out heat exchange between the outdoor air and refrigerant；Cold and hot main body switching device, switches in above-mentioned refrigeration Formed in a manner of being functioned in circulation using above-mentioned outdoor heat exchanger as condenser flow path cooling main body operation and The heating master of flow path is formed in a manner of functioning in above-mentioned refrigeration cycle using above-mentioned outdoor heat exchanger as evaporator Running body；Second expansion mechanism makes the system in above-mentioned outdoor heat exchanger after heat exchange in the operation of above-mentioned cooling main body Cryogen expansion, or the refrigerant expansion in the operation of above-mentioned Heating body in above-mentioned outdoor heat exchanger before heat exchange；Flow path Switching mechanism switches flow path, so that the refrigerant from above-mentioned outdoor heat exchanger is directly provided, or at above-mentioned one The indoor heat exchanger for dividing the refrigerant in the indoor heat exchanger of indoor unit after heat exchange to be provided to remaining above-mentioned indoor unit； And operation control device, switched flow path by above-mentioned stream switching mechanism and is being handed in the Indoor Thermal of above-mentioned a part of indoor unit When refrigerant in parallel operation after heat exchange is provided to the indoor heat exchanger of remaining above-mentioned indoor unit, according to remaining above-mentioned interior The air conditioning capacity of the indoor heat exchanger of machine controls the revolving speed of above-mentioned outdoor fan.

Invention effect

In accordance with the invention it is possible to provide a kind of conditioner can be steadily cold and hot while run.

Detailed description of the invention

System diagram when Fig. 1 is the cooling main body operation in the conditioner of first embodiment.

Fig. 2 is the not sharp of the balance of the cooling capacity and heating efficiency in the conditioner for indicate first embodiment That line chart.

Process when Fig. 3 is the cooling main body operation in the conditioner of first embodiment.

System diagram when Fig. 4 is the Heating body operation in the conditioner of first embodiment.

Process when Fig. 5 is the Heating body operation in the conditioner of first embodiment.

System diagram when Fig. 6 is the cooling main body operation in the conditioner of second embodiment.

Process when Fig. 7 is the cooling main body operation in the conditioner of second embodiment.

System diagram when Fig. 8 is the Heating body operation in the conditioner of second embodiment.

Process when Fig. 9 is the Heating body operation in the conditioner of second embodiment.

Specific embodiment

Hereinafter, being suitably described with reference to mode for carrying out the present invention (present embodiment).In each embodiment In, same reference numerals are added to same apparatus, component, description is omitted.In addition, in each flow chart of reference, it is right Identical to control additional same steps number, description is omitted.

[1. first embodiment]

System diagram when Fig. 1 is the cooling main body operation in the conditioner 100 of first embodiment.Air conditioning Device 100 cold and hot can be run simultaneously, i.e., on one side in a part of indoor unit of multiple indoor unit 40a, 40b, 40c, 40d with cold But running either mode operation is run or heats, on one side in remaining indoor unit other than a part of indoor unit To carry out heating operation or cooling operation under the mode different from the operational mode of above-mentioned a part of indoor unit.

Conditioner 100 has 1 outdoor unit 10 and is present in indoor unit 40a, 40b, 40c, 40d and outdoor unit Cold and hot switch unit 30a, 30b, 30c, 30d (stream switching mechanism) between 10.Cold and hot switch unit 30a, 30b, 30c, 30d Switching flow path is directly to provide indoor heat exchanger 41a, 41b the refrigerant from outdoor heat exchanger 14 or will be by being arranged Refrigerant after indoor heat exchanger 41a, 41b heat exchange of local heating operation indoor unit 40a, 40b, which is supplied to, to be set to The indoor heat exchanger 41d of remaining cooling operation indoor unit 40d.Meaning is " direct to indoor heat exchanger 41a, 41b herein Refrigerant from outdoor heat exchanger 14 is provided " mean " refrigerant in outdoor heat exchanger 14 after heat exchange without Indoor heat exchanger 41a, 41b " are supplied to by other indoor heat exchangers, i.e. indoor heat exchanger 41c, 41d.Hereinafter, " directly providing " in this case, indicates identical meaning.

Indoor heat exchanger 41a, 41b, 41c, 41d is respectively configured in machine 40a, 40b, 40c, 40d indoors, below It is described in detail, but these heat exchangers, compressor 11, outdoor heat exchanger 14 are connected by piping.In addition, in room Have indoor fan 49a, 49b, 49c, 49d in inside heat exchanger 41a, 41b, 41c, 41d, indoor fan 49a, 49b, 49c, 49d passes through the room air blowed as air-conditioning object, and heat exchange is carried out between air and refrigerant.In addition, machine indoors Have indoor expansion valve 42a, 42b, 42c, 42d (the first expansion mechanism) in 40a, 40b, 40c, 40d.

In addition, outdoor unit 10 has: high-low pressure flue side four-way valve 12 switches over so that high-low pressure gas is responsible for 22 are connected with either one or two of high-pressure side or low-pressure side；(heat exchanger side) four-way valve 13 (cold and hot main body switching device), root Switch flow path according to cooling either one or two of main body or Heating body；Outdoor heat exchanger 14；And outdoor fan 19, by atmosphere It is blown into outdoor heat exchanger 14 and carries out heat exchange between atmosphere and refrigerant.Moreover, above-mentioned indoor heat exchanger 41a, 41b, 41c, 41d, compressor 11, indoor expansion valve 42a, 42b, 42c, 42d and outdoor heat exchanger 14 are with can be by matching Pipe is connected, so that refrigerant circulates.Refrigeration cycle is constituted as a result,.

In addition, outdoor unit 10 has outdoor expansion valve 15 (the second expansion mechanism), which makes to lead cooling Refrigerant when running body in outdoor heat exchanger 14 after heat exchange, in Heating body operation in outdoor heat exchanger 15 Refrigerant expansion before making heat exchange.The function of outdoor expansion valve 15 is described below.

In addition, the valve shown in dot pattern indicates valve closing in Fig. 1, aftermentioned system diagram.In addition, in present embodiment In, outdoor unit 10 is 1, but can similarly be set as 2 or more.In addition, in the present embodiment, showing indoor unit 40a, 40b, 40c, 40d are set as 4 examples, but can also at least be set as more than 4.

Also, indoor unit 40a is heats operation, indoor unit 40b stops heating high pressure, low pressure is heated in indoor unit 40c stopping, Indoor unit 40d is cooling operation, it is assumed that heating operation machine is mixed operation with cooling operation machine.In addition, indoor heat exchange Device 41a, 41b are connected to high-pressure side, and condenser, indoor heat exchanger 41c, 41d are connected to low-pressure side, play as evaporator Effect.

Outdoor unit 10 is cold and hot while multi-functional outdoor unit, comprising: compressor 11, high-low pressure flue side four-way valve 12, four-way valve 13, outdoor heat exchanger 14, outdoor expansion valve 15 and reservoir 18.The reservoir side of compressor 11 is low pressure Side, the four-way valve side of compressor 11 are high-pressure side.Refrigerant is conveyed by its differential pressure.

Illustrate the application method of 2 four-way valves 12,13.As the cold and hot of this object while in the case where running, height Pressure flue side four-way valve 12 switches over, so that high-low pressure gas supervisor 22 is connected to high-pressure side.In addition, outdoor four-way valve 13 According to the equilibrium condition of indoor cooling load and heating load.I.e. according to cooling main body or Heating body, by outdoor heat exchange Device 14 is switched to the either side in high-pressure side and low-pressure side.It, will in the case where simply cooling load is greater than heating load Outdoor heat exchanger 14 is connected to high-pressure side and is used as condenser.This is referred to as cooling main body.It is greater than in heating load cooling negative In the case where load, outdoor heat exchanger 14 is connected to low-pressure side and is used as evaporator.This is referred to as Heating body.Fig. 1 is cold But an example of main body, aftermentioned Fig. 4 are an examples of Heating body.Cooling load and heating load then is described in detail using Fig. 2 Balance.

In conditioner 100, be described in detail below with cooling either one or two of main body or Heating body into The control of the control of capable four-way valve 12,13, the control of compressor 11, outdoor expansion valve 15 is carried out by control mechanism 28.Though It is so not shown, but control mechanism 28 has CPU (Central Processing Unit: central processing unit), RAM (Random Access Memory: random access memory), ROM (Read Only Memory: read-only memory), I/F (connect Mouthful) etc..Moreover, executing the regulation control program for being stored in ROM by CPU, it is achieved in control mechanism 28.

Then, illustrate the process of refrigerant.As shown in Figure 1, the outdoor heat exchanger 14 and indoor unit of outdoor unit 10 Each indoor heat exchanger 41a, 41b, 41c, 41d of 40a, 40b, 40c, 40d pass through liquid supervisor 21, high-low pressure gas supervisor 22 And low-pressure gas is responsible for 23 these three pipings and is attached.Moreover, refrigerant is in the piping internal circulation.

Firstly, a part of the high-temperature high-pressure gas refrigerant compressed by compressor 11 passes through high-low pressure flue side four-way Valve 12 is transported to high-low pressure gas supervisor 22.Moreover, being transported to heating indoor unit 40a, heating high pressure stops indoor unit 40b condenses in each indoor heat exchanger 41a, 41b and forms high pressure liquid refrigerant, and is transported to liquid supervisor 21.By Remaining high-temperature high-pressure gas refrigerant that compressor 11 compresses condenses to be formed in outdoor heat exchanger 14 by four-way valve 13 High pressure liquid refrigerant, and be transported to liquid supervisor 21, with the liquid refrigerant in above-mentioned indoor condensation converged and by It is delivered to cooling indoor unit 40d.Here, being depressurized by being squeezed by indoor expansion valve 42d, evaporated in heat exchanger 41d indoors And low-pressure refrigerant gas is formed, outdoor unit is transported to by low-pressure gas supervisor 23.Moreover, being back to by reservoir 18 Compressor 11, is recycled again.

In this way, refrigerant recycles in refrigeration cycle and transmits heat.Therefore, when studying thermal balance, preferably consider respectively The evaporation heat exchange amount of heat exchange amount, each indoor unit 40a, 40b, 40c, 40d in outdoor heat exchanger 14, condensation heat exchange Power in amount or compressor 11.Here, being studied in conditioner 100 referring to not Lear line chart related with thermal balance Thermal balance.

Fig. 2 is the balance of the cooling capacity and heating efficiency in the conditioner 100 for indicate first embodiment Not Lear line chart.In Fig. 2, horizontal axis is indicated into specific enthalpy (kJ/kg), the longitudinal axis is expressed as each portion's pressure (MPa) of refrigeration cycle.It closes It can uniquely be found out by measurement pressure and temperature in the part of each point of not Lear line chart, state 1,3, state 4 can It is found out according to the specific enthalpy of pressure and state 3, state 1 can be according to the characteristic or pressure and condenser and evaporation of pressure and compressor The characteristic of device is found out.Therefore, Fig. 2 shows not Lear line chart facilitate estimate conditioner 100 operating status.

In addition, condenser is equivalent to indoor heat exchanger 41a, 41b and outdoor heat exchanger 14 in Fig. 2.In addition, steaming Hair device is equivalent to indoor heat exchanger 41c, 41d.

Also, Fig. 2 shows not Lear line chart in, 1~state of state 2 indicate compressor 11 sucking~discharge shape State, 2~state of state 3 indicate entrance~discharge state of evaporator, and 4~state of state 1 indicates entrance~outlet of condenser The ratio enthalpy change of state.Moreover, when by the specific enthalpy variable quantity multiplied by circulating mass of refrigerant (kg/s), additionally it is possible to find out W (state 1~state 2): compressor power, Qcond (2~state of state 3): the heat exchange amount of condenser, Qevap (4~state of state 1): the heat exchange amount in evaporator.In addition, as can be seen from FIG. 2, setting up following formula in stable operation in these three cases (1)。

Qcond=Qevap+W formula (1)

For the formula (1), it is easier to understand when being illustrated from refrigerant side.The heat that refrigerant is discharged by condenser Qcond means that the heat Qevap that refrigerant is absorbed by the evaporator and compressor power W's absorbed by compressor 14 is total Value.In thermal balance collapse for example in the smaller situation of heat discharged by condenser, in the refrigerant, therefore heat gathers The pressure of condenser and adiabatic condensation temperature is set to rise to keep thermal balance so as to be easy to radiating mode.It is released on the contrary by condenser It in the case that the heat put is bigger, is reduced by refrigerant heat and not in a manner of easy heat radiation, makes the pressure and condensation temperature of condenser Degree decline is to keep thermal balance.Here, conditioner 100 as shown in Figure 1 is like that, there are multiple indoor unit 40a, In the case where 40b, 40c, 40d, in the case that heating operation machine and cooling operation machine be mixed, only add up to heat and idea And it has not been changed.

In the case where outdoor unit 10 is cooling main body, Qcond becomes the heat dissipation capacity Σ of all heating operation indoor unit 40a The heat dissipation capacity Qoutdoor's of Qindoorheat and outdoor heat exchanger 14 is total.In addition, Qevap becomes all cooling operations The caloric receptivity Σ Qindoorcool of indoor unit 40d.Therefore, it when above-mentioned thermal balance type is unfolded to Qoutdoor, is expressed as follows.

Qoutdoor=- Σ Qindoorheat+ Σ Qindoorcool+W formula (2)

When adjusting the heat dissipation capacity of outdoor heat exchanger 14, as described above, considering to adjust outdoor by control motor M The method of the air quantity of fan 19.But such as the outdoor in atmosphere low-temperature, not can avoid stopping outdoor fan 19 yet by Heat dissipation caused by free convection.And in the case where outdoor is blown, also cause to radiate by forced convertion.Cooling capacity as a result, Become excessive or heating efficiency becomes insufficient.Therefore, in order to cope with such case, outdoor expansion valve is set in outdoor unit 10 15, it reduces circulating mass of refrigerant and inhibits to radiate.

In addition, as described below, be infinitely close to zero in the heat exchange amount of outdoor heat exchanger 14 [in above-mentioned formula (2), Qoutdoor ≒ 0] in the case of, when circulating mass of refrigerant is suppressed to 0, circulating mass of refrigerant adjustment is carried out by expansion valve.

Σ Qindoorheat ≒ Σ Qindoorcool+W formula (3)

Then, in Fig. 1, consider heat exchange amount formula.Outdoor heat exchanger 14 becomes condenser as described above.In addition, room Interior machine 40a, 40b are also all connected to high-pressure side, therefore become condenser.Moreover, the heat exchange amount of these condensers is closed Value obtained from meter is Qcond.On the other hand, indoor unit 41c, 41d is connected to low-pressure side, therefore becomes evaporator.Due to room Interior machine 40c is to stop indoor unit, therefore normally closed indoor expansion valve 42c, but in the case where opening expansion valve transition It can be functioned as evaporator, therefore corresponding heat exchange amount be worth obtained from adding up to also as Qevap.

Here, when the heat exchange amount of outdoor heat exchanger (hereinafter referred to as outdoor heat exchange amount) is defined as Qod, by room The heat exchange amount (hereinafter referred to as ability) of inside heat exchanger is defined as Qa~Qd by each indoor unit, is applied to above-mentioned formula (2) When, obtain following formula (4).

Qod=-Qa-Qb+Qc+Qd+W formula (4)

Further, since being cooling main body, therefore cooling operation indoor unit is usually controlled by the revolving speed of compressor 11 The ability Qc+Qd of 40c, 40d.In addition, the power W of compressor 11 also with compressor 11 operating status and change.Another party Face adjusts the ability of heating operation indoor unit 40a, 40b according to outdoor heat exchange amount Qod.In formula (4), heating is run Ability Qa, Qb of indoor unit 40a, 40b add negative appended drawing reference, it may thus be appreciated that heating when outdoor heat exchange amount Qod increases The ability for running indoor unit 40a, 40b reduces, the energy of heating operation indoor unit 40a, 40b when outdoor heat exchange amount Qod reduces Power increases.That is, the heated side indoor unit as non-master side can be adjusted by adjusting outdoor heat exchange amount Qod The ability of 40a, 40b.

By the revolving speed of change outdoor fan 19 come variable air rate, so as to adjust outdoor heat exchange amount Qod.Wherein, such as It is upper described, even if stopping outdoor fan 19 sometimes, undesirable heat dissipation also occurs, the heating as non-master side runs indoor unit The ability of 40c, 40d become insufficient.Therefore, in this case, after stopping outdoor fan 19, by reducing outdoor expansion The aperture of valve 15 reduces the circulating mass of refrigerant for flowing through outdoor heat exchanger 14, increases the refrigerant for flowing through indoor unit 40a, 40b Internal circulating load.Thereby, it is possible to make heating operation indoor unit 40c, 40d obtain heating efficiency to rise.Moreover, finally working as outdoor expansion valve When 15 aperture is set as scheduled lower limit or less (being also possible to fully closed), since refrigerant will not flow, heat can be handed over The amount of changing ad infinitum is suppressed to 0.

In the case that heating efficiency becomes excessive in the control process of the outdoor expansion valve 15, outdoor can be again turned on The aperture of expansion valve 15.On the contrary even if feelings insufficient the aperture of outdoor expansion valve 15 reaches lower limit aperture and heating efficiency Under condition, mode is switched to Heating body from cooling main body using four-way valve 13.

Process when Fig. 3 is the cooling main body operation in the conditioner 100 of first embodiment.As long as no spy Do not mentionlet alone it is bright, then the process shown in Fig. 3 pass through control mechanism 28 (operation control device) shown in fig. 1 execute.In cooling main body fortune When row, the cooling capacity as cooling operation indoor unit 40c, 40d for mainly running adjusts the revolving speed by adjusting compressor 11 And circulating mass of refrigerant is controlled to carry out (step S100).Such as in the insufficient situation of cooling capacity, by improving compressor 11 revolving speed come increase circulating mass of refrigerant, increase cooling capacity.On the other hand, cooling lower than set temperature etc. in blowout temperature In the case that ability is excessive, circulating mass of refrigerant is reduced by reducing the revolving speed of compressor 11, reduces cooling capacity.Moreover, Hereinafter, adjustment is as the heating efficiency in heating operation indoor unit 40a, 40b of secondary operation.

First, it is determined that the air conditioning capacity of heating operation indoor unit 40a, 40b are relative to the whether excessive (step of air conditioner load S101).In the case where being judged as that ability is excessive ("Yes" direction), next, it is determined that whether the aperture of outdoor expansion valve 15 is control Below target aperture processed (step S102).In addition, illustrating " the "No" direction of step S101 " below.

In the case where being judged as "Yes" in step s 102, the aperture of outdoor expansion valve 15 becomes larger (step S103).As a result, Circulating mass of refrigerant in outdoor heat exchanger 14 becomes larger, and is increased by the refrigeration dose of heat exchange, therefore inhibits heating efficiency.Separately On the one hand, in the case where being judged as "No" in step s 102, only the effect of outdoor expansion valve 15 is insufficient, therefore controls electricity Motivation M is to increase the revolving speed (step S104) of outdoor fan 19.The heat dissipation capacity of outdoor heat exchanger 14 increases as a result, therefore presses down Heating efficiency processed.Then, it is controlled by these, the control of conditioner 100 terminates.

In addition, judging the energy of heating operation indoor unit 40a, 40b in the case where being judged as "No" in above-mentioned steps S101 Whether power is insufficient (step S105).Here, be not it is insufficient, i.e. neither heating efficiency is excessive be also not insufficient situation under ("No" direction), heating efficiency is run well with cooling capacity balance, therefore the control of conditioner 100 terminates.

But in step s105, in the case where being judged as scarce capacity ("Yes" direction), next, it is determined that outdoor wind Whether the revolving speed of fan 19 is greater than scheduled lower limit (step S106).Its judge as a result, the revolving speed in outdoor fan 19 is greater than In the case where lower limit ("Yes" direction), motor M is controlled, to reduce the revolving speed (step S107) of outdoor fan 19.It is outdoor as a result, The heat dissipation of heat exchanger 14 is inhibited, and heating efficiency increases.Then, it is controlled by these, the control of conditioner 100 Terminate.

On the other hand, in above-mentioned steps S106, in the case where the revolving speed for being judged as outdoor fan 19 is lower limit situation below ("No" direction) can not inhibit heat dissipation capacity by reducing the revolving speed of outdoor fan 19, to can not increase heating efficiency.Cause Whether this is then greater than scheduled lower limit (step S108) in the aperture for judging outdoor expansion valve 15.In this judgment, in room The aperture of outer expansion valve 15 is greater than in the case where lower limit ("Yes" direction), reduces the aperture (step S109) of outdoor expansion valve 15. Reduce the circulating mass of refrigerant in outdoor heat exchanger 14 by outdoor expansion valve 15 as a result,.That is, reducing in outdoor heat exchange The refrigeration dose of heat exchange in device 14 increases heating efficiency.

On the other hand, in the case where the aperture of outdoor expansion valve 15 is lower limit situation below ("No" direction), based on outdoor swollen The circulating mass of refrigerant of swollen valve 15 becomes lower limit.Therefore, the aperture of outdoor expansion valve 15 is sufficiently small, can not be to outdoor expansion Valve 15 operate and can not increase heating efficiency.In this case, switch four-way valve 13, and operational mode is switched to heating Main body (step S110).Then, it is controlled by these, the control of conditioner 100 terminates.

In addition, in the process shown in Fig. 3, in addition to operational mode is switched to the control (step S110) of Heating body with Outside, the later process of step S100 is carried out at intervals of set time, obtains indoor load and the cooling thermal balance with heating, thus Control conditioner 100.

System diagram when Fig. 4 is the Heating body operation in the conditioner 100 of first embodiment.In above-mentioned example In illustrate that the cooling running system diagram of main body and process then illustrate the running system diagram of Heating body and process.

In the Heating body operation shown in Fig. 4, the direction of four-way valve 13 different from cooling main body operation shown in fig. 1 It is connected to low-pressure side as by outdoor heat exchanger 14, outdoor heat exchanger 14 becomes evaporator.Thus, in Fig. 4, condenser It is equivalent to indoor heat exchanger 41c, 41d.In addition, evaporator is equivalent to indoor heat exchanger 41a, 41b and outdoor heat exchanger 14。

Here, illustrating thermal balance referring to Fig. 2 in the same manner as above-mentioned cooling main body operation.It is Heating body in outdoor unit 10 In the case where, the Qcond in above-mentioned formula (1) becomes the heat dissipation capacity Σ of all heating operation indoor unit 40a, 40b Qindoorheat.In addition, Qevap becomes caloric receptivity Σ Qindoorcool and the room of all cooling operation indoor unit 40c, 40d The caloric receptivity Qoutdoor's of outer heat-exchanger 14 is total.Therefore, when by above-mentioned thermally equilibrated formula (1) relative to Qoutdoor exhibition When opening, indicated as following formula (5).

Qoutdoor=Σ Qindoorheat- Σ Qindoorcool-W formula (5)

When adjusting the caloric receptivity in outdoor heat exchanger 14, the method for the air quantity of adjustment outdoor fan 19 is considered.But As through above-mentioned cooling main body explanation, undesirable heat dissipation occurs stopping outdoor fan 19, thus with it is above-mentioned cold But outdoor expansion valve 15 is used in the same manner the case where main body, to inhibit to radiate.

Here, indoor unit 40a, 40b are connected to high-pressure side in Fig. 4, therefore become condenser as described above, by these The heat exchange amount of condenser, which carries out value obtained from adding up to, becomes Qcond.On the other hand, indoor unit 41c, 41d and outdoor heat are handed over Parallel operation 14 is connected to low-pressure side, therefore becomes evaporator as described above.Being carried out value obtained from adding up to becomes Qevap.So Afterwards, when heat exchange amount (hereinafter referred to as outdoor heat exchange amount) Qod by outdoor heat exchanger 14 is unfolded to be illustrated in Figure 1 Thermally equilibrated formula (2) when become following formula (6).

Qod=Qa+Qb-Qc-Qd-W formula (6)

Further, since being Heating body, therefore indoor unit is run to control heating generally according to the revolving speed of compressor 11 The ability Qa+Qb of 40a, 40b.In addition, the power W of compressor 11 also with compressor 11 operating status and change.Another party Face adjusts the ability of cooling operation indoor unit 40c, 40d according to outdoor heat exchange amount Qod.In formula (6), room is run to cooling Ability Qc, Qd of interior machine 40c, 40d add negative appended drawing reference, it may thus be appreciated that the cooling fortune when outdoor heat exchange amount Qod increases The ability of row indoor unit 40c, 40d reduce, the ability of cooling operation indoor unit 40c, 40d when outdoor heat exchange amount Qod reduces Increase.That is, by adjusting outdoor heat exchange amount Qod, can adjust the cold side indoor unit 40c as non-master side, The ability of 40d.

Control motor M and thus, it is possible to adjust outdoor heat exchange amount for the revolving speed that changes air quantity to change outdoor fan 19 Qod.Wherein, as described above, even if undesirable heat dissipation also occurs sometimes when stopping outdoor fan 19, as non-master side Cooling operation indoor unit 40a, 40b scarce capacity.Therefore, in this case, after stopping outdoor fan 19, reduce The aperture of outdoor expansion valve 15, thus reduces the circulating mass of refrigerant for flowing through outdoor heat exchanger 14, and indoor unit is flowed through in increase The circulating mass of refrigerant of 40c, 40d.Thereby, it is possible to improve the cooling capacity of cooling operation indoor unit 40a, 40b.Then, finally When the aperture of outdoor expansion valve 15 is set as scheduled lower limit (being also possible to fully closed) below, refrigerant will not flow, therefore Heat exchange amount can be ad infinitum suppressed to 0.

In the case that cooling capacity becomes excessive in the control process of the outdoor expansion valve 15, outdoor can be again turned on The aperture of expansion valve 15.On the contrary in feelings insufficient the aperture of outdoor expansion valve 15 reaches lower limit aperture and cooling capacity Under condition, mode is switched to cooling main body from Heating body using four-way valve 13.

Process when Fig. 5 is the Heating body operation in the conditioner 100 of first embodiment.As long as no spy Do not mentionlet alone bright, then the process shown in Fig. 5 is executed also by control mechanism 28 shown in fig. 1.When Heating body shown in Fig. 5 is run Process when process is run with the cooling main body shown in above-mentioned Fig. 3 is substantially identical process, therefore mainly illustrates difference.

Heating body operation when, as mainly run heating operation indoor unit 40a, 40b heating efficiency adjustment with It likewise by the revolving speed of adjustment compressor 11 and controls circulating mass of refrigerant when cooling main body operation and carries out (step S200). Such as in the insufficient situation of heating efficiency, increases circulating mass of refrigerant by improving the revolving speed of compressor 11, increase heating Ability.On the other hand, in the case where heating efficiency is excessive, reduce refrigerant circulation by reducing the revolving speed of compressor 11 Amount reduces heating efficiency.Then, hereinafter, cooling capacity of the adjustment as cooling operation indoor unit 40c, 40d of secondary operation.

First, it is determined that whether the ability of cooling operation indoor unit 40c, 40d are excessive (step S201) relative to air conditioner load. In the case where being judged as that ability is excessive ("Yes" direction), when above-mentioned cooling main body is run in the same manner as (reference Fig. 3), control room Outer expansion valve 15, outdoor fan 19 (step S102~S104).

On the other hand, not excessive in the ability for being judged as cooling operation indoor unit 40c, 40d in above-mentioned steps S201 In the case where (the "No" direction of step S201), judge the whether insufficient (step of the ability of cooling operation indoor unit 40c, 40d S205).Then, in the case where being judged as scarce capacity ("Yes" direction), same (referring to Fig. 3) when being run with above-mentioned cooling main body Sample, control outdoor expansion valve 15, outdoor fan 19 (step S106~S109).

Then, can not be extensive through the control of the outdoor expansion valve 15 of step S106~S109, outdoor fan 19 In the case where cooling down service ability again, when above-mentioned cooling main body is run in the same manner as (reference Fig. 3), running mode switching.That is, cutting It is changed to cooling main body (step S210).

As described above, executing the process shown in Fig. 3 in cooling main body operation in conditioner 100, heating The process shown in Fig. 5 is executed in main body operation.In particular, the revolving speed of outdoor fan 19 is scheduled opens in a process in office Although degree is hereinafter, the heat exchange amount in outdoor heat exchanger 14 is sufficiently inhibited and the case where the scarce capacity of secondary operation Under, it can also increase secondary service ability.

In addition, for example in step S110, step S210, change main body operation.Then, in the aperture of outdoor expansion valve 15 The change is carried out when for below scheduled lower limit.Therefore, according to " aperture of outdoor expansion valve 15 " being objectively easily mastered this Index is planted to carry out the change of main body operation, therefore can simply carry out the control of conditioner 100.

Also, as shown in above-mentioned Fig. 1, Fig. 4, in conditioner 100,21, high-low pressure gas are responsible for using liquid Supervisor 22 and low-pressure gas are responsible for 23 these three pipings.Therefore, outdoor expansion valve 15 is only installed on outdoor unit 10, it will be able to The process shown in Fig. 3, Fig. 5 is carried out, to be easy to flexibly use existing equipment.

[2. second embodiment]

System diagram when Fig. 6 is the cooling main body operation in the conditioner 200 of second embodiment.Fig. 6 is shown Conditioner 200 be in cooling subject mode, outdoor heat exchanger 14 becomes condenser.In the air tune shown in Fig. 6 In regulating device 200, the number of units of outdoor unit 10 and indoor unit 40a, 40b, 40c, 40d are identical as above-mentioned conditioner 100, even Connect these indoor units piping number be only high-voltage tube 24 and low-voltage tube 25 the two.That is, the liquid system together with gas refrigerant Thus cryogen omits the liquid supervisor 21 of above-mentioned conditioner 100 by the high-voltage tube 24 and low-voltage tube 25 shown in Fig. 6.

In addition, conditioner 200 has: gas-liquid segregating unit 61, be used for by from outdoor unit 10 to indoor unit 40a, The two phase refrigerant of the side 40b, 40c, 40d conveying is separated into liquid and gas；And first mechanism of decompressor 62 and the second negative booster Structure 63 (such as being expansion valve etc.), the hydraulic and gas pressure after adjustment separation.

Also, in conditioner 200, has 15 this point of outdoor expansion valve and above-mentioned conditioner 100 It is identical, but other than outdoor expansion valve 15, it is also equipped with outdoor heat exchanger by-passing valve 17, the outdoor heat exchanger by-passing valve 17 will not make the refrigerant flow direction outdoor heat exchanger 14 for being back to outdoor unit 10 and detour.The by-passing valve 17 is simultaneously not shown, but It is arranged at the midway for the bypass pipe being arranged in the vertical direction, can only make to circulate in the pipe being configured on the downside of vertical direction Gas-liquid mixed refrigerant in gas refrigerant detour.

Hereinafter, illustrating the process of the refrigerant in the conditioner 200 when cooling main body operation.It is filled in air conditioning It sets in 200, in general, 15 standard-sized sheet of outdoor expansion valve and outdoor heat exchanger by-passing valve 17 is fully closed.

Four-way valve 13 is discharged to by the high-pressure gas refrigerant that compressor 11 compresses, and is supplied to outdoor heat exchanger 14.Then, moderately being condensed in outdoor heat exchanger 14 by outdoor fan 19 becomes high-pressure two-phase refrigerant.The high pressure Two phase refrigerant passes through the outdoor expansion valve 15 and check-valves 26 of standard-sized sheet, and is transported to gas-liquid separator by high-voltage tube 24 61.The room of first mechanism of decompressor 62 with the indoor unit of cooling operation is transported to by the isolated liquid refrigerant of gas-liquid separator 61 Between interior expansion valve 42d.On the other hand, it is transported to by the isolated saturated gas refrigerant of gas-liquid separator 61 and carries out heating fortune Capable indoor unit 40a, 40b, and condense and become high pressure liquid refrigerant.The high pressure liquid refrigerant passes through indoor expansion valve 42a, 42b are transported between first mechanism of decompressor 62 and indoor expansion valve 42d.As a result, the high pressure liquid refrigerant with it is defeated Send to the liquid refrigerant between above-mentioned first mechanism of decompressor 62 and the indoor expansion valve 42d for the indoor unit for carrying out cooling operation into Row converges.

The liquid refrigerant converged in this way is depressurized by being squeezed by indoor expansion valve 42d, indoors in heat exchanger 41d with Room air carries out heat exchange and evaporates and become low-pressure refrigerant gas.The low-pressure refrigerant gas is transported to low-voltage tube 25, compressor 11 is back to by check-valves 26 in outdoor unit 10 and is recycled again.Here, indoor in heating operation In the case where the scarce capacity of machine 40a, 40b, reduces the air quantity of outdoor fan 19 and inhibit heat exchange.But work as outdoor When fan 19 stops, heat exchange amount can not be further suppressed.

Therefore, even if in the case where still heating up the scarce capacity of operation after stopping outdoor fan 19, outside control room Expansion valve 15 and outdoor heat exchanger by-passing valve 17.Specifically, reducing outdoor expansion valve 15 after the stopping of outdoor fan 19 And outdoor heat exchanger by-passing valve 17 is opened, thus make the refrigerant detour for flowing through outdoor heat exchanger 14.Outdoor heat is handed over as a result, The heat dissipation of parallel operation 14 is inhibited, so as to ensure to heat the ability of operation indoor unit 40a, 40b.Then, if by outdoor The aperture of expansion valve 15 is set as scheduled lower limit or less (being also possible to fully closed) and by 17 standard-sized sheet of outdoor heat exchanger by-passing valve, Refrigerant will not be then flowed in outdoor heat exchanger 14, heat dissipation can be ad infinitum suppressed to 0.

Heating efficiency becomes excessive in the control process of the outdoor expansion valve 15 and outdoor heat exchanger by-passing valve 17 In the case of, increase the aperture of outdoor expansion valve 15 again, and reduce the aperture of outdoor heat exchanger by-passing valve 17.On the contrary, Scheduled lower limit or less is reached in the aperture for making outdoor expansion valve 17 (to be also possible to fully closed) and heating efficiency also insufficient situation Under, the cooling main body shown in operational mode from Fig. 6 is switched to the Heating body shown in Fig. 7 using four-way valve 13.

Process when Fig. 7 is the cooling main body operation in the conditioner 200 of second embodiment.As long as no spy Do not mentionlet alone bright, then the process shown in Fig. 7 is executed also by the control mechanism 28 shown in Fig. 6.In addition, the process shown in Fig. 7 is basic It is upper identical as when carrying out cooling main body operation in above-mentioned conditioner 100 process (referring to Fig. 3).Therefore, with it is upper Centered on stating the different point of process shown in Fig. 3, illustrate the process of the conditioner 200 of second embodiment.

When running conditioner 200 to cool down main body, as described above, 15 standard-sized sheet of outdoor expansion valve, in addition, room Heat exchanger bypass valve 17 (hereinafter, sometimes referred to simply as " by-passing valve 17 ") is fully closed.Then, in cooling main body operation, as The adjustment of the cooling capacity mainly run carries out (step 101) by controlling the revolving speed of compressor 11.In addition, as secondary fortune The adjustment of capable heating efficiency carries out as follows.That is, in the case where heating efficiency is excessive (the "Yes" direction of step S101), By controlling outdoor expansion valve 15, outdoor fan 19, adjust heating efficiency (step S102~step S104).

On the other hand, in the insufficient situation of heating efficiency (the "Yes" direction of step S105), control outdoor expansion valve 15, Outdoor fan 19 is identical as above-mentioned conditioner 100 (referring to Fig. 3), but in the conditioner 200 shown in Fig. 6 In, also control by-passing valve 17 (step S309) in addition to this.Specifically, running the ability of indoor unit 40a, 40b not in heating The aperture of foot (the "Yes" direction of step S105) and outdoor expansion valve 15 is greater than (the "Yes" side of step S108 in the case where lower limit To), it carries out reducing the aperture of outdoor expansion valve 15 and increases the control (step S309) of the aperture of by-passing valve 17.Pass through opening By-passing valve 17, the circulating mass of refrigerant in outdoor heat exchanger 14 reduce, are reduced by the refrigeration dose of heat exchange.Therefore, it comes from The heat dissipation of the refrigerant of outdoor heat exchanger 14 is inhibited, hereby it is achieved that recovery heating service ability.

System diagram when Fig. 8 is the Heating body operation in the conditioner 200 of second embodiment.Show above-mentioned The system diagram and process of cooling main body operation are illustrated in example, then, illustrate the system diagram and process of Heating body operation.

It is different from the cooling main body operation shown in Fig. 6 in the Heating body operation shown in above-mentioned Fig. 7, four-way valve 13 Outdoor heat exchanger 14 is connected to low-pressure side towards becoming, outdoor heat exchanger becomes evaporator.Thus, in Fig. 6, condensation Device is equivalent to indoor heat exchanger 41c, 41d.In addition, evaporator is equivalent to indoor heat exchanger 41a, 41b and outdoor heat exchange Device 14.Hereinafter, illustrating the flowing of the refrigerant in the conditioner 200 when Heating body operation.In conditioner In 200, as described above, in general, 15 standard-sized sheet of outdoor expansion valve, outdoor heat exchanger by-passing valve 17 are fully closed.

Four-way valve 13 is discharged to by the high-pressure gas refrigerant that compressor 11 compresses, passes through check-valves 26 and high-voltage tube 24 It is transported to gas-liquid segregating unit 61.The high-pressure gas refrigerant separated herein is transported to heating operation indoor unit 40a, 40b, and It condenses and becomes high pressure liquid refrigerant.The high pressure liquid refrigerant is transported to first by indoor expansion valve 42a, 42b and subtracts Between press mechanism 62 and indoor expansion valve 42d.A part of liquid refrigerant of conveying is subtracted by being squeezed by indoor expansion valve 42d Pressure exchanges heat with room air in heat exchanger 41d indoors and is evaporated, becomes low-pressure refrigerant gas.Low-pressure gas refrigeration Agent is transported to low-voltage tube 25.Remaining liquid refrigerant passes through second mechanism of decompressor 63 and is transported to the above-mentioned of low-voltage tube 25 Low-pressure refrigerant gas is merged as biphase gas and liquid flow.

The biphase gas and liquid flow passes through low-voltage tube 25 and is transported to outdoor heat exchanger 14 via check-valves 26.Then, with Outdoor air carries out heat exchange and evaporates, and becomes low-pressure refrigerant gas.The low-pressure refrigerant gas is returned by four-way valve 13 It is back to compressor 11 and is recycled again.Here, in the case where the scarce capacity of cooling operation indoor unit 40c, 40d, drop The air quantity of low outdoor fan 19 and inhibit heat exchange.Then, persistently reduce outdoor fan 19 air quantity as a result, in outdoor In the case that fan 19 stops, cooling capacity can be increased by reducing second mechanism of decompressor 63.

But even if in the case where reducing the second mechanism of decompressor 63 still insufficient situation of cooling capacity, second mechanism of decompressor 63 It is fully closed.But in this case, in the state that only gas refrigerant flows in outdoor heat exchanger 14.Gas refrigerant Volume flow increases compared with liquid refrigerant under mass flow same case, and flow velocity is also accelerated.Then, when flow velocity is fast, Flow path resistance in low-voltage tube 25 is simply square directly proportional to flow velocity, therefore the pressure loss increases, as refrigeration cycle Efficiency decline.

Therefore, in conditioner 200, after the stopping of outdoor fan 19, the knot of second mechanism of decompressor 63 is reduced Fruit is, when being transported to the ratio of refrigerant gas of outdoor heat exchanger 14 (mass dryness fraction) increase, to beat in outdoor expansion valve 15 In the state of opening, outdoor heat exchanger by-passing valve 17 is also opened.The one of the gas refrigerant of outdoor heat exchanger 14 is flowed through as a result, Part detour can reduce the gas flow rate of outdoor heat exchanger 14, so as to reduce the pressure loss.

Also, when cooling capacity becomes excessive in the control process of the outdoor heat exchanger by-passing valve 17, outdoor heat is handed over Parallel operation by-passing valve 17 is extruded again.Gas refrigerant and liquid refrigerant are again applied to outdoor heat exchanger 14 as a result,. On the other hand, the aperture of second mechanism of decompressor 63 reach scheduled lower limit or less (be also possible to fully closed) and cooling capacity not yet In the case where foot, the Heating body shown in operational mode from Fig. 7 is switched to the cooling main body shown in Fig. 6 using four-way valve 13.

Process when Fig. 9 is the Heating body operation in the conditioner 200 of second embodiment.As long as no spy Do not mentionlet alone bright, the process shown in Fig. 9 is executed also by the control mechanism 28 shown in Fig. 6.When Heating body shown in Fig. 9 is run Process (referring to Fig. 5) when Heating body in process and above-mentioned conditioner 100 is run is substantially identical process, because This mainly illustrates the distinguishing characteristics with the process shown in Fig. 5.

When running conditioner 200 with Heating body, by-passing valve 17 is fully closed and carries out heating operation.Then, Adjustment as the heating efficiency mainly run carries out (step 201) by adjusting the revolving speed of compressor 11.In addition, as secondary The adjustment for the cooling capacity to be run carries out as follows.That is, (the "Yes" side of step S201 in the case where cooling capacity is excessive To), by controlling outdoor expansion valve 15, outdoor fan 19, adjust cooling capacity (step S102~step S104).

On the other hand, in the insufficient situation of cooling capacity (the "Yes" direction of step S205), control outdoor fan 19 with Above-mentioned conditioner 100 is identical (referring to Fig. 3), but in the conditioner 200 shown in Fig. 6, in addition to this, also Control second mechanism of decompressor 63 and by-passing valve 17.Specifically, firstly, in the cooling scarce capacity for running indoor unit 40c, 40d The revolving speed of (the "Yes" direction of step S205) and outdoor fan 19 is greater than in the case where lower limit (the "No" direction of step S106), sentences Whether the aperture of disconnected second mechanism of decompressor 63 is greater than lower limit (step S408).Then, it is greater than in the aperture of second mechanism of decompressor 63 In the case where lower limit ("Yes" direction), second mechanism of decompressor 63 reduces (step S409).It is supplied to cooling operation indoor unit as a result, The refrigeration dose of 40d increases, to realize recovery cooling capacity.On the contrary, second mechanism of decompressor 63 aperture be lower limit with In the case where lower ("No" direction), second mechanism of decompressor 63 can not be further reduced, therefore switch four-way valve 13, operational mode from Heating body is changed to cooling main body (step S410).

As described above, executing the process shown in Fig. 7 in cooling main body operation in conditioner 200, heating The process shown in Fig. 9 is executed in main body operation.Therefore, in the same manner as above-mentioned conditioner 100, in conditioner In 200, also independently with outdoor state, air conditioning can be steadily carried out.

Description of symbols

10: outdoor unit；11: compressor；12: high-low pressure flue side four-way valve；13: four-way valve；14: outdoor heat exchange Device；15: outdoor expansion valve；17: outdoor heat exchanger by-passing valve；18: reservoir；19: outdoor fan；21: liquid supervisor；22: High-low pressure gas supervisor；23: low-pressure gas supervisor；24: high-voltage tube；25: low-voltage tube；26: check-valves；28: control mechanism；30a, 30b, 30c, 30d: cold and hot switch unit；31a, 31b, 31c, 31d: the effective expansion valve of high-low pressure gas；32a,32b,32c, 32d: the effective expansion valve of low-pressure gas；40a, 40b, 40c, 40d: indoor unit；41a, 41b, 41c, 41d: indoor heat exchanger； 42a, 42b, 42c, 42d: indoor expansion valve；49a, 49b, 49c, 49d: outdoor fan；61: gas-liquid segregating unit；62: the first decompressions Mechanism；63: the second mechanisms of decompressor.

Claims (according to the 19th article of modification of treaty)

1. a kind of (after modification) conditioner cold and hot can be run simultaneously, i.e., on one side as the multiple of air-conditioning object Running either mode operation is run or heats with cooling in a part of indoor unit in indoor unit, on one side in addition to this Heating fortune is carried out with the mode different from the operational mode of above-mentioned a part of indoor unit in remaining indoor unit divided other than indoor unit Capable or cooling operation, it is characterised in that it is characterized in that,

Above-mentioned conditioner has:

Multiple indoor heat exchangers are respectively arranged in above-mentioned multiple indoor units；

Indoor fan blows room air to the indoor heat exchanger, hot friendship is carried out between the room air and refrigerant It changes；

Compressor is connected by being piped with above-mentioned indoor heat exchanger, to the circulation piping transported refrigerant into Row compression；

First expansion mechanism, from the compressor, which is set to the upstream side or downstream of refrigerant flow direction Side makes the refrigerant expansion for flowing through above-mentioned piping；

Outdoor heat exchanger is constituted together with above-mentioned indoor heat exchanger, above-mentioned compressor and above-mentioned first expansion mechanism Refrigeration cycle；

Outdoor fan blows outdoor air to the outdoor heat exchanger, hot friendship is carried out between the outdoor air and refrigerant It changes；

Cold and hot main body switching device switches cooling main body operation and Heating body operation, which operates to, above-mentioned Flow path is formed in a manner of functioning in refrigeration cycle using above-mentioned outdoor heat exchanger as condenser, Heating body operation To form flow path in a manner of functioning in above-mentioned refrigeration cycle using above-mentioned outdoor heat exchanger as evaporator；

Second expansion mechanism makes the refrigeration in above-mentioned outdoor heat exchanger after heat exchange in the operation of above-mentioned cooling main body Agent expansion, or the refrigerant expansion in the operation of above-mentioned Heating body in above-mentioned outdoor heat exchanger before heat exchange；

Stream switching mechanism switches flow path, so that the refrigerant from above-mentioned outdoor heat exchanger is directly provided, Huo Zhe Refrigerant in the indoor heat exchanger of above-mentioned a part of indoor unit after heat exchange is provided to the interior of remaining above-mentioned indoor unit Heat exchanger；And

Operation control device is being switched flow path by above-mentioned stream switching mechanism and is being handed in the Indoor Thermal of above-mentioned a part of indoor unit When refrigerant in parallel operation after heat exchange is provided to the indoor heat exchanger of remaining above-mentioned indoor unit, according to remaining above-mentioned interior The air conditioning capacity of the indoor heat exchanger of machine controls the revolving speed of above-mentioned outdoor fan,

In the case where the revolving speed of above-mentioned outdoor fan becomes scheduled lower limit situation below, above-mentioned operation control device is according to above-mentioned Air conditioning capacity when cooling main body operation as the indoor heat exchanger of remaining above-mentioned indoor unit of heating operation, it is above-mentioned to control Second expansion mechanism, according to the indoor heat exchange when above-mentioned Heating body is run as remaining above-mentioned indoor unit of cooling operation The air conditioning capacity of device controls above-mentioned second expansion mechanism, thus adjusts the circulating mass of refrigerant of above-mentioned outdoor heat exchanger.

(2. deletion)

3. a kind of (after modification) conditioner cold and hot can be run simultaneously, i.e., on one side as the multiple of air-conditioning object Running either mode operation is run or heats with cooling in a part of indoor unit in indoor unit, on one side in addition to this Heating fortune is carried out with the mode different from the operational mode of above-mentioned a part of indoor unit in remaining indoor unit divided other than indoor unit Capable or cooling operation, which is characterized in that

Above-mentioned conditioner has:

Multiple indoor heat exchangers are respectively arranged in above-mentioned multiple indoor units；

Indoor fan blows room air to the indoor heat exchanger, hot friendship is carried out between the room air and refrigerant It changes；

Compressor is connected by being piped with above-mentioned indoor heat exchanger, to transported refrigerant in the piping of circulating It is compressed；

First expansion mechanism, from the compressor, which is set to the upstream side or downstream of refrigerant flow direction Side makes the refrigerant expansion for flowing through above-mentioned piping；

Outdoor heat exchanger is constituted together with above-mentioned indoor heat exchanger, above-mentioned compressor and above-mentioned first expansion mechanism Refrigeration cycle；

Outdoor fan blows outdoor air to the outdoor heat exchanger, hot friendship is carried out between the outdoor air and refrigerant It changes；

Cold and hot main body switching device switches cooling main body operation and Heating body operation, which operates to, above-mentioned Flow path, Heating body operation are formed in a manner of functioning in refrigeration cycle using above-mentioned outdoor heat exchanger as condenser To form flow path in a manner of functioning in above-mentioned refrigeration cycle using above-mentioned outdoor heat exchanger as evaporator；

Second expansion mechanism makes the refrigerant when above-mentioned cooling main body is run in above-mentioned outdoor heat exchanger after heat exchange Expansion or the refrigerant expansion in the operation of above-mentioned Heating body in above-mentioned outdoor heat exchanger before heat exchange；

Stream switching mechanism, switch flow path, so as to the refrigerant from above-mentioned outdoor heat exchanger be directly provided or Refrigerant in the indoor heat exchanger of above-mentioned a part of indoor unit after heat exchange is provided to the interior of remaining above-mentioned indoor unit Heat exchanger；And

Operation control device is being switched flow path by above-mentioned stream switching mechanism and is being handed in the Indoor Thermal of above-mentioned a part of indoor unit When refrigerant in parallel operation after heat exchange is provided to the indoor heat exchanger of remaining above-mentioned indoor unit, according to remaining above-mentioned interior The air conditioning capacity of the indoor heat exchanger of machine controls the revolving speed of above-mentioned outdoor fan,

When the revolving speed of above-mentioned outdoor fan becomes scheduled lower limit or less, above-mentioned operation control device is expanded by above-mentioned second Mechanism adjusts the circulating mass of refrigerant of above-mentioned outdoor heat exchanger, also, in the refrigerant circulation of above-mentioned second expansion mechanism When amount becomes lower limit, above-mentioned operation control device runs operational mode from above-mentioned cooling main body operation and above-mentioned Heating body Either one is switched to another party.

(4. after modification) conditioner according to claim 1 or 3, which is characterized in that

Above-mentioned multiple indoor heat exchangers are responsible for above-mentioned outdoor heat exchanger by the liquid that liquid refrigerant flows through and gas Two gases supervisor that cryogen flows through is attached.

(5. after modification) conditioner according to claim 1 or 3, which is characterized in that

In times of the cooling operation of the main body as cooling main body operation or the heating operation of the main body as Heating body operation It is carried out in one in the indoor unit being heated or cooled as the operational mode different from main body,

When the ability of the indoor unit is excessive for air conditioner load, above-mentioned operation control device is with the system of above-mentioned outdoor heat exchanger The increased mode of refrigerant cycle amount controls above-mentioned second expansion mechanism,

When the ability of the indoor unit is for air conditioner load deficiency, above-mentioned operation control device is with the system of above-mentioned outdoor heat exchanger The mode of refrigerant cycle amount reduction controls above-mentioned second expansion mechanism.

6. conditioner according to claim 5, which is characterized in that

When the ability of above-mentioned indoor unit is excessive for air conditioner load, above-mentioned operation control device is with above-mentioned outdoor heat exchanger The increased mode of heat dissipation capacity improves the revolving speed of above-mentioned outdoor fan,

When the ability of above-mentioned indoor unit is for air conditioner load deficiency, above-mentioned operation control device is with above-mentioned outdoor heat exchanger The mode that heat dissipation capacity reduces reduces the revolving speed of above-mentioned outdoor fan.

Illustrate or states (according to the 19th article of modification of treaty)

(1)

It is revised as in claim 1, has added composition in the invention constitutive requirements that claim 1 before a modification is recorded Important document, this composition important document be limited to outdoor fan revolving speed become scheduled lower limit situation below under operation control device institute into Capable control content.The control content of the operation control device limited by the modification is will limit in the claim 2 before modification The control content of operation control device when being further divided into the operation of cooling main body and when Heating body is run each situation come it is detailed It is thin to limit.

In addition, the control content when cooling main body for the operation control device limited in claim 1 is run, is recorded Paragraphs [0033]-[0034], paragraph [0049]-[0050], Fig. 3 when application etc..In addition, being transported for Heating body Control content when row is recorded in paragraphs [0033]-[0034], paragraph [0049]-[0050], Fig. 3 etc. when application.

In contrast, outdoor fan is not documented in the document 1-6 quoted in the position paper of international survey organ Revolving speed becomes the control content of the conditioner in scheduled lower limit situation below, or it is controlled describing Method it is also different from the control method of operation control device limited in modified claim.

Therefore, invention involved in modified claim 1 has novelty and creativeness.

(2)

Modified claim 3 is that will be determined as in the position paper of international survey organ with novelty and creativeness Modification before the record of claim 3 (reference modification before claim 1 and 2) be revised as the claim of absolute version It records.Therefore, invention involved in modified claim 3 has novelty and creativeness.

(3)

Based on the claim 2 and power by the claim 3 before modification as absolute version for being revised as deleting before modification Benefit requires, and the claim of reference is revised as claim 1 or 3 from claims 1 or 2 by modified claim 4,5.Separately Outside, it does not modify for quoting the claim 6 of claim 5.

Therefore, because as above-mentioned modified claim 1 and 3 has novelty and creativeness, therefore modified power Benefit, which requires 4-6 also, has novelty and creativeness.

Claims (6)

1. a kind of conditioner cold and hot can be run simultaneously, i.e., on one side in multiple indoor units as air-conditioning object A part of indoor unit in cooling operation or heat running either mode operation, on one side in addition to a part of indoor unit Heating operation or cooling are carried out with the mode different from the operational mode of above-mentioned a part of indoor unit in remaining indoor unit in addition Operation, it is characterised in that it is characterized in that,

Above-mentioned conditioner has:

Multiple indoor heat exchangers are respectively arranged in above-mentioned multiple indoor units；

Indoor fan blows room air to the indoor heat exchanger, hot friendship is carried out between the room air and refrigerant It changes；

Compressor is connected by being piped with above-mentioned indoor heat exchanger, to the circulation piping transported refrigerant into Row compression；

First expansion mechanism, from the compressor, which is set to the upstream side or downstream of refrigerant flow direction Side makes the refrigerant expansion for flowing through above-mentioned piping；

Outdoor heat exchanger is constituted together with above-mentioned indoor heat exchanger, above-mentioned compressor and above-mentioned first expansion mechanism Refrigeration cycle；

Outdoor fan blows outdoor air to the outdoor heat exchanger, hot friendship is carried out between the outdoor air and refrigerant It changes；

Cold and hot main body switching device switches cooling main body operation and Heating body operation, which operates to, above-mentioned Flow path is formed in a manner of functioning in refrigeration cycle using above-mentioned outdoor heat exchanger as condenser, Heating body operation To form flow path in a manner of functioning in above-mentioned refrigeration cycle using above-mentioned outdoor heat exchanger as evaporator；

Second expansion mechanism makes the refrigeration in above-mentioned outdoor heat exchanger after heat exchange in the operation of above-mentioned cooling main body Agent expansion, or the refrigerant expansion in the operation of above-mentioned Heating body in above-mentioned outdoor heat exchanger before heat exchange；

Stream switching mechanism switches flow path, so that the refrigerant from above-mentioned outdoor heat exchanger is directly provided, Huo Zhe Refrigerant in the indoor heat exchanger of above-mentioned a part of indoor unit after heat exchange is provided to the interior of remaining above-mentioned indoor unit Heat exchanger；And

Operation control device is being switched flow path by above-mentioned stream switching mechanism and is being handed in the Indoor Thermal of above-mentioned a part of indoor unit When refrigerant in parallel operation after heat exchange is provided to the indoor heat exchanger of remaining above-mentioned indoor unit, according to remaining above-mentioned interior The air conditioning capacity of the indoor heat exchanger of machine controls the revolving speed of above-mentioned outdoor fan.

2. conditioner according to claim 1, which is characterized in that

When the revolving speed of above-mentioned outdoor fan becomes scheduled lower limit or less, above-mentioned operation control device is expanded by above-mentioned second Mechanism adjusts the circulating mass of refrigerant of above-mentioned outdoor heat exchanger.

3. conditioner according to claim 2, which is characterized in that

When the circulating mass of refrigerant of above-mentioned second expansion mechanism becomes lower limit, above-mentioned operation control device is by operational mode from upper It states any of cooling main body operation and the operation of above-mentioned Heating body side and is switched to another party.

4. conditioner according to claim 1 or 2, which is characterized in that

Above-mentioned multiple indoor heat exchangers are responsible for above-mentioned outdoor heat exchanger by the liquid that liquid refrigerant flows through and gas Two gases supervisor that cryogen flows through is attached.

5. conditioner according to claim 1 or 2, which is characterized in that

In times of the cooling operation of the main body as cooling main body operation or the heating operation of the main body as Heating body operation It is carried out in one in the indoor unit being heated or cooled as the operational mode different from main body,

When the ability of the indoor unit is excessive for air conditioner load, above-mentioned operation control device is with the system of above-mentioned outdoor heat exchanger The increased mode of refrigerant cycle amount controls above-mentioned second expansion mechanism,

When the ability of the indoor unit is for air conditioner load deficiency, above-mentioned operation control device is with the system of above-mentioned outdoor heat exchanger The mode of refrigerant cycle amount reduction controls above-mentioned second expansion mechanism.

6. conditioner according to claim 5, which is characterized in that

When the ability of above-mentioned indoor unit is excessive for air conditioner load, above-mentioned operation control device is with above-mentioned outdoor heat exchanger The increased mode of heat dissipation capacity improves the revolving speed of above-mentioned outdoor fan,

When the ability of above-mentioned indoor unit is for air conditioner load deficiency, above-mentioned operation control device is with above-mentioned outdoor heat exchanger The mode that heat dissipation capacity reduces reduces the revolving speed of above-mentioned outdoor fan.