CN105318508B - Air-conditioning device - Google Patents
Air-conditioning device Download PDFInfo
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- CN105318508B CN105318508B CN201510302999.XA CN201510302999A CN105318508B CN 105318508 B CN105318508 B CN 105318508B CN 201510302999 A CN201510302999 A CN 201510302999A CN 105318508 B CN105318508 B CN 105318508B
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 76
- 239000003507 refrigerant Substances 0.000 claims abstract description 302
- 238000001514 detection method Methods 0.000 claims abstract description 99
- 238000005057 refrigeration Methods 0.000 claims description 37
- 238000009408 flooring Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 13
- 238000010438 heat treatment Methods 0.000 description 10
- 238000009434 installation Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- CDOOAUSHHFGWSA-OWOJBTEDSA-N (E)-1,3,3,3-tetrafluoroprop-1-ene Chemical compound F\C=C\C(F)(F)F CDOOAUSHHFGWSA-OWOJBTEDSA-N 0.000 description 3
- FXRLMCRCYDHQFW-UHFFFAOYSA-N 2,3,3,3-Tetrafluoropropene Chemical compound FC(=C)C(F)(F)F FXRLMCRCYDHQFW-UHFFFAOYSA-N 0.000 description 3
- 150000001336 alkenes Chemical class 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 150000008282 halocarbons Chemical class 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- RWRIWBAIICGTTQ-UHFFFAOYSA-N Difluoromethane Chemical compound FCF RWRIWBAIICGTTQ-UHFFFAOYSA-N 0.000 description 1
- 210000003128 Head Anatomy 0.000 description 1
- -1 R290 Chemical compound 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000779 depleting Effects 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000000149 penetrating Effects 0.000 description 1
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The purpose of the present invention is to provide the air-conditioning devices that can detect refrigerant leakage earlier.Indoor unit (1) has framework (111), in the inside of framework (111) and configured with the upper space (115b) of indoor heat exchanger (7), in the inside of framework (111) and it is arranged in the lower space (115a) than upper space (115b) on the lower, it is configured at the indoor Air Blast fan (7f) of lower space (115a), lower space (115a) is configured at for covering indoor Air Blast fan (7f), and it is formed with the fan drum (108) of blowout opening portion (108a) and suction opening portion (108b), refrigerant detection unit (99), blowout opening portion (108a) is connected to upper space (115b), refrigerant detection unit (99) is set to lower space (115a).
Description
Technical field
The present invention relates to air-conditioning devices.
Background technology
In the past, it is using HFC refrigerant as non-flame properties R410A as refrigerant used in air-conditioning device.It should
R410A is different from HCFC refrigerants as existing R22, and ozone layer depleting potential (hereinafter referred to as " ODP ") is zero, because
This does not destroy ozone layer.But R410A has property as global warming potential (hereinafter referred to as " GWP ") height.Therefore make
To prevent a ring of global warming, the research changed from the HFC refrigerant of GWP high as R410A to refrigerant low GWP is not
It is disconnected to promote.
The candidate of refrigerant as such low GWP, there are the R290 (C as natural refrigerant3H8：Propane),
R1270(C3H6：Propylene) as HC refrigerants.However, R290, R1270 are different from non-flame properties R410A, there is strong combustion rank
Combustibility (combustion property by force).Therefore in the case where using R290, R1270 as refrigerant, it should be noted that the leakage of refrigerant.
In addition, the candidate as low GWP refrigerants, there are the HFC refrigerant for the double bond for not having carbon in the composition, examples
Low R32 (the CH such as GWP ratios R410A2F2；Difluoromethane).
In addition, as same candidate refrigerant, there are halogenated hydrocarbons, which is similarly HFC refrigerant with R32
One kind, and the double bond with carbon in the composition.As the halogenated hydrocarbons, such as there are HFO-1234yf (CF3CF=CH2；Tetrafluoro third
Alkene), HFO-1234ze (CF3- CH=CHF).In addition, freezing to not have the HFC of the double bond of carbon in the composition like that with R32
Agent is distinguished, in the composition the HFC refrigerant of the double bond with carbon, uses alkene (by the insatiable hunger of the double bond with carbon mostly
Be known as alkene with hydrocarbon) " O ", and show as " HFO ".
The HFC refrigerant (including HFO refrigerants) of such low GWP, although unlike the R290 as natural refrigerant that
The HC refrigerants of sample have strong combustion property like that, but different from non-flame properties R410A, have combustibility (micro- combustion of micro- combustion rank
Property).Therefore the leakage of refrigerant is noted also that with R290.Hereinafter, will have micro- combustion rank more than (for example,
In the classification of ASHRAE34 be 2L or more) flammable refrigerant be known as " combustible refrigerant ".
In the case where combustible refrigerant is leaked to the interior space, it is possible to so that indoor refrigerant concentration is increased, and
Result in the possibility in combustible concentration region.
The indoor unit of following air-conditioning device is described in patent document 1, i.e.,：It is connect with heat exchanger containing
Near the indoor drip tray of machinery of refrigerant piping, the refrigerant detection unit configured with detection combustible refrigerant.At this
In the indoor unit of air-conditioning device, the indoor leakage of refrigerant from refrigerant piping of machinery can be by being configured in Machine Room
The detection of refrigerant detection unit, and carry out the leakage of refrigerant of automatic heat-exchanger, can also reach drip tray and to Machine Room
Interior guiding, and can equally be detected by being configured at the indoor refrigerant detection unit of machinery.
Following air-conditioning device is described in patent document 2, i.e.,：In the air-conditioning device using combustible refrigerant,
The outer surface of machine has the refrigerant detection unit of detection combustible refrigerant indoors, and indoor unit is formed as bottom and sets type,
Refrigerant detection unit is set to the lower part of indoor unit.In the air-conditioning device, it is connect from indoor unit in combustible refrigerant
Extension piping had occurred to interior leak in the case of or the combustible refrigerant of machine internal leakage indoors, pass through interior
The gap of the framework of machine and towards in the case of the external outflow of indoor unit, can be let out using the refrigerant detection unit to detect
Leak refrigerant.
Patent document 1：No. 3744330 bulletin of patent
Patent document 2：No. 4599699 bulletin of patent
However, in air-conditioning device recorded in patent document 1, the framework of machine is formed with wind path indoors, which uses
In will be by the adjusting air after heat exchanger to indoor blowout.Carry out a part for the leakage of refrigerant of automatic heat-exchanger as a result,
Can be leaked out from blow-off outlet to outside framework, thus whole amounts of leakage of refrigerant can not be reached drip tray and into Machine Room
Guiding.Therefore it has the following problems：Until detecting leakage of refrigerant using refrigerant detection unit, need to spend the time,
Therefore there is a situation where to cause the reply of starting of pressure fan for making leakage of refrigerant spread etc. also slack-off.
Equally, in the air-conditioning device recorded in patent document 2, the framework of machine is also formed with wind path indoors, the wind path
For making through the adjusting air after heat exchanger to indoor blowout.A part for leakage of refrigerant is from blow-off outlet to frame as a result,
It is external to leak out, thus whole amounts of leakage of refrigerant can not be guided to the place configured with refrigerant detection unit.Cause
This problems with：Leakage of refrigerant position is being detected using refrigerant detection unit, needs to spend the time, therefore presence causes
Also slack-off situation is coped in the starting of pressure fan for making leakage of refrigerant diffusion etc..
Invention content
The present invention is to solve the above-mentioned problems at least one made, and it is an object of the present invention to provide one kind can be earlier
Detect the air-conditioning device of refrigerant leakage.
The air-conditioning device of the present invention has：Refrigeration cycle makes refrigerant be recycled via refrigerant piping；Outdoor unit,
It at least accommodates the compressor of the refrigeration cycle and outdoor heat exchanger；And indoor unit, at least accommodate the refrigeration
The indoor heat exchanger of cycle, and be piped via the extension of the part as the refrigerant piping and connect with the outdoor unit
It connects, there is the refrigerant density bigger than the density of air under atmospheric pressure, the indoor unit to have：Framework；Upper space,
It is configured with the indoor heat exchanger in the inside of the framework；Lower space is set in the inside of the framework
Than the position of the upper space on the lower；Fan is configured at the lower space；Fan drum, be configured at it is described under
Portion space for covering the fan, and is formed with blowout opening portion and suction opening portion；And refrigerant detection unit,
One side of the blowout opening portion or the suction opening portion, is connected to, the refrigerant detection unit is set with the upper space
It is placed in the lower space.
Preferably, the refrigerant detection unit is set to the inside of the fan drum.
Preferably, the refrigerant detection unit is set to the blowout opening portion or the suction opening portion.
Preferably, the refrigerant detection unit is configured at position in the lower space, more against the top than the fan
It sets.
Preferably, it is provided in the framework：Under shed portion becomes a side of suction inlet or blow-off outlet；Upper opening portion,
It is configured at the position more against the top than the under shed portion, and as another party of the suction inlet or the blow-off outlet, described
Refrigerant detection unit be set to it is in the lower space, it is described blowout opening portion or the suction opening portion another party with
Space between the under shed portion.
Preferably, another party in the blowout opening portion or the suction opening portion is arranged in the refrigerant detection unit
Under the opening of another party in space between the under shed portion, with the blowout opening portion or the suction opening portion
Hold identical height or the position than the height on the lower.
Preferably, the open lower end in the under shed portion is set to the position more against the top than the bottom surface sections of the framework.
Preferably, the refrigerant detection unit be arranged in height identical with the open lower end under shed portion or
Person is than the position of height on the lower.
Preferably, the indoor unit is also equipped with lattice, the lattice by the upper space and the lower space into
Row separates, and wind path opening portion is formed in the lattice, and it is empty with the lower part which becomes the upper space
Between between wind path, it is described blowout opening portion or the suction opening portion a side, via the wind path opening portion with it is described
Upper space is connected to.
Preferably, it between the indoor heat exchanger and extension piping, is connected via connector portions, the connector portions
It is configured at the upper space.
Preferably, it between the indoor heat exchanger and extension piping, is connected via connector portions, the connector portions
It is set to the position more against the top than the fan and the refrigerant detection unit.
Preferably, it is formed with front surface opening portion in the front surface of the framework, the framework at least has：Table before first
Faceplate panels can removably be installed on the lower part in the front surface opening portion；Second front surface panel, can removably pacify
Loaded on part more against the top than the lower part in the front surface opening portion, the connector portions are set to than first front surface
The position of the upper end of panel on the lower.
Preferably, the indoor heat exchanger, which has, manages mutual joint portion, and the mutual joint portion of the pipe becomes the system
A part for the flow path of cryogen.
Preferably, also there is control unit, detection signal of the control unit based on the refrigerant detection unit, to control
Fan is stated, in the case where detecting the leakage of the refrigerant, the control unit makes the fan running.
Preferably, the indoor unit is disposed on the bottom of flooring and sets type indoor unit.
Preferably, the refrigerant is combustible refrigerant.
System can be improved rapidly in the case that heat exchanger is just in case have occurred refrigerant leakage indoors according to the present invention
Refrigerant concentration around cryogen detection unit, therefore the leakage of refrigerant can be detected earlier.
Description of the drawings
Fig. 1 is the refrigerant loop figure of the schematic arrangement for the air-conditioning device for indicating embodiments of the present invention 1.
Fig. 2 is the front view of the surface structure of the indoor unit 1 for the air-conditioning device for indicating embodiments of the present invention 1.
Fig. 3 is the in-built main view of the indoor unit 1 for the air-conditioning device for showing schematically embodiments of the present invention 1
Figure.
Fig. 4 is the in-built side view of the indoor unit 1 for the air-conditioning device for showing schematically embodiments of the present invention 1
Figure.
Fig. 5 is the indoor heat exchanger 7 and its circumferential component for the air-conditioning device for showing schematically embodiments of the present invention 1
Structure front view.
Fig. 6 is indicated in the air-conditioning device of embodiments of the present invention 1, is leaked using the refrigerant that control unit 30 executes
The flow chart of one example of detection process.
Fig. 7 is the in-built main view of the indoor unit 1 for the first variation for showing schematically embodiments of the present invention 1
Figure.
Fig. 8 is the in-built side view of the indoor unit 1 for the first variation for showing schematically embodiments of the present invention 1
Figure.
Fig. 9 is the in-built main view of the indoor unit 1 for the second variation for showing schematically embodiments of the present invention 1
Figure.
Figure 10 is the in-built side of the indoor unit 1 for the second variation for showing schematically embodiments of the present invention 1
View.
Figure 11 is the in-built main view of the indoor unit 1 for the air-conditioning device for showing schematically embodiments of the present invention 2
Figure.
Figure 12 is the in-built side view of the indoor unit 1 for the air-conditioning device for showing schematically embodiments of the present invention 2
Figure.
Figure 13 is the in-built main view of the indoor unit 1 for the air-conditioning device for showing schematically embodiments of the present invention 3
Figure.
Figure 14 is the in-built side view of the indoor unit 1 for the air-conditioning device for showing schematically embodiments of the present invention 3
Figure.
Figure 15 is the in-built main view of the indoor unit 1 for the air-conditioning device for showing schematically embodiments of the present invention 4
Figure.
Figure 16 is the in-built side view of the indoor unit 1 for the air-conditioning device for showing schematically embodiments of the present invention 4
Figure.
Reference sign：1 ... indoor unit；2 ... outdoor units；3 ... compressors；4 ... refrigerant flow path switching devices；5…
Outdoor heat exchanger；The outdoor Air Blast fans of 5f ...；6 ... decompressors；7 ... indoor heat exchangers；The indoor Air Blast fans of 7f ...；
9a, 9b ... indoor tube；10a, 10b ... extend piping；11 ... sucking pipings；12 ... discharge pipings；13a, 13b ... extend piping
Connection valve；14a, 14b, 14c ... safeguard mouth；15a, 15b ... connector portions；20 ... lattices；20a ... wind paths opening portion；25 ... electricity
Device box；26 ... operation portions；30 ... control units；40 ... refrigeration cycle；61 ... collectors are responsible for；62 ... collector branch pipes；63 ... indoor systems
Cryogen branch pipe；70 ... fins；71 ... heat conducting pipes；The end 71a, 71b ...；72 ... hair clip bend pipes；73 ... U-bends；81 ... wind paths
Space；91 ... inhaled air temperature sensors；92 ... heat exchanger entrance temperature sensors；93 ... heat exchanger temperatures sense
Device；99 ... refrigerant detection units；107 ... impellers；108 ... fan drums；108a ... blows out opening portion；108b ... suction openings
Portion；108b1 ... open lower ends；111 ... frameworks；111a ... bottom surface sections；112 ... suction inlets；112a ... open lower ends；113 ... blow
Outlet；114a ... the first front surface panels；114b ... the second front surface panels；114c ... third front surface panels；Under 115a ...
Portion space；115b ... upper spaces；130 ... recess portions；131,133 ... lids；132 ... bellyings；W ... brazed portion.
Specific implementation mode
Embodiment 1
The air-conditioning device of the embodiment 1 of the utility model is illustrated.Fig. 1 is the air-conditioning dress for indicating present embodiment
The refrigerant loop figure for the outline structure set.In addition, including Fig. 1 in the following figures, there are the rulers of each component parts
Very little relationship, shape etc. and practical different situation.
As shown in Figure 1, air-conditioning device has the refrigeration cycle 40 for making refrigerant circulation.Refrigeration cycle 40 has following knot
Structure, i.e.,：Via refrigerant piping, successively by compressor 3, refrigerant flow path switching device 4, (the heat source side heat of outdoor heat exchanger 5
Exchanger), decompressor 6 and indoor heat exchanger 7 (load-side heat exchanger) be connected as ring-type.In addition, air-conditioning device has
Have：Such as it is set to indoor indoor unit 1 and is for example set to outdoor outdoor unit 2.Between indoor unit 1 and outdoor unit 2, warp
10a, 10b are piped by the extension of the part as refrigerant piping and is connected.
As the refrigerant recycled in refrigeration cycle 40, such as use micro- combustion such as R32, HFO-1234yf, HFO-1234ze
Property refrigerant or R290, R1270 etc. by force combustion property refrigerant.Above-mentioned refrigerant can be used as unitary system cryogen, also may be used
To be used as two or more mix refrigerants is mixed with.
Compressor 3 be the low pressure refrigerant sucked is compressed, and as high-pressure refrigerant discharge fluid
Equipment.Refrigerant flow path switching device 4 is in refrigeration operation and when heating operation, to the stream of the refrigerant in refrigeration cycle 40
The device that dynamic direction switches over.As refrigerant flow path switching device 4, such as use four-way valve.Outdoor heat exchanger 5 be
The heat exchanger for functioning as condenser when refrigeration operation, being functioned as evaporator in heating operation.In outdoor
In heat exchanger 5, refrigerant of the progress in internal circulation and air (the external sky by aftermentioned outdoor Air Blast fan 5f air-supplies
Gas) heat exchange.Decompressor 6 is the device for high-pressure refrigerant being depressurized and being become low pressure refrigerant.As subtracting
Pressure device 6, such as use the electric expansion valve etc. that can adjust aperture.Indoor heat exchanger 7 is in refrigeration operation as steaming
The heat exchanger that hair device is functioned, functioned as condenser in heating operation.Indoors in heat exchanger 7, carry out
Refrigerant in internal circulation, the heat exchange with the air by aftermentioned indoor Air Blast fan 7f air-supplies.Wherein, refrigeration operation is
The operating of the refrigerant of low-temp low-pressure is supplied to indoor heat exchanger 7, heating operation is to supply high temperature height to indoor heat exchanger 7
The operating of the refrigerant of pressure.
It is contained in outdoor unit 2：Compressor 3, refrigerant flow path switching device 4, outdoor heat exchanger 5 and decompressor
6.In addition, accommodating the outdoor Air Blast fan 5f that oriented outdoor heat exchanger 5 supplies extraneous air in outdoor unit 2.Outdoor air-supply wind
Fan 5f is opposed to be arranged with outdoor heat exchanger 5.By making outdoor Air Blast fan 5f rotate, to generate by outdoor heat exchange
The air stream of device 5.As outdoor Air Blast fan 5f for example using propeller fan.Outdoor Air Blast fan 5f is in the outdoor air-supply
In the air stream that fan 5f is generated, such as it is configured at the downstream side of outdoor heat exchanger 5.
In outdoor unit 2, it is configured with as refrigerant piping：The extension of gas side (when refrigeration operation) is piped connection valve
The sucking of refrigerant piping, the suction side for being connected to compressor 3 that 13a is connect with refrigerant flow path switching device 4 is piped 11, connects
It is connected to the system that the discharge of the discharge side of compressor 3 is piped 12, connect refrigerant flow path switching device 4 with outdoor heat exchanger 5
Cryogen pipe arrangement, the refrigerant piping that outdoor heat exchanger 5 is connect with decompressor 6 and by decompressor 6 and hydraulic fluid side
The refrigerant piping of the extension piping connection valve 13b connections of (when refrigeration operation).Extend piping connection valve 13a by that can be opened
The two-port valve for the switching put and closed is constituted, and flare type joint is equipped in one end.In addition, extend piping connection valve 13b by
The triple valve for the switching that can be opened and be closed is constituted, and (is filled out to refrigeration cycle 40 when one end is equipped with and vacuumizes
When the operation filled before refrigerant) the maintenance mouth 14a that uses, flare type joint is installed in the other end.
Under any state in refrigeration operation and when heating operation, in discharge piping 12, flowing, which has, is compressed
The gas refrigerant for the high temperature and pressure that machine 3 compresses.Under any state in refrigeration operation and when heating operation, match in sucking
Flowing has the refrigerant (gas refrigerant or two-phase system cryogen) of the low-temp low-pressure by evaporation in pipe 11.Match in sucking
Pipe 11 is connected with the maintenance mouth 14b with flare type joint of low-pressure side, and on high-tension side band flare type joint is connected in discharge piping 12
Maintenance mouth 14c.When safeguarding mouth 14b, 14c for the test running when air-conditioning device is installed, when repairing, connection pressure gauge is simultaneously
Measurement operating pressure is used.
Machine 1 contains indoor heat exchanger 7 indoors.In addition, machine 1 is provided with to the supply of indoor heat exchanger 7 indoors
The indoor Air Blast fan 7f of air.By making indoor Air Blast fan 7f rotate, to generate the air by indoor heat exchanger 7
Stream.As indoor Air Blast fan 7f, according to the form of indoor unit 1, using centrifugal fan (for example, sirocco fan, turbine wind
Fan etc.), cross flow fan, diagonal flow fan, aerofoil fan (for example, propeller fan) etc..The indoor Air Blast fan 7f of this example,
It is configured at the upstream side of indoor heat exchanger 7 in the air stream that interior Air Blast fan 7f is generated, but room can also be configured at
The downstream side of inside heat exchanger 7.
In addition, being provided with lower sensor etc., i.e., in machine 1 indoors：Inhaled air temperature sensor 91, to from interior
The temperature of the room air of sucking is detected；Heat exchanger entrance temperature sensor 92 freezes to indoor heat exchanger 7 and transports
The refrigerant temperature of inlet portion (outlet portion when heating operation) when turning is detected；Heat-exchanger temperature sensor 93,
The refrigerant temperature (evaporating temperature or condensation temperature) in the two-phase portion of indoor heat exchanger 7 is detected.In addition, machine indoors
1 is provided with aftermentioned refrigerant detection unit 99.The sensor class can be to the control of control indoor unit 1 or air-conditioning device entirety
The output of portion 30 detection signal processed.
The indoor tube 9a for leaning on gas side in the refrigerant piping of machine 1 indoors connects in the extension piping 10a with gas side
The interconnecting piece connect is provided with for connecting the connector portions 15a (for example, flare type joint) for extending piping 10a.In addition, machine 1 indoors
Refrigerant piping in lean on the indoor tube 9b of hydraulic fluid side to be provided in the interconnecting pieces that connect of extension piping 10b with hydraulic fluid side
For connecting the connector portions 15b (for example, flare type joint) for extending piping 10b.
There is control unit 30 microcomputer, the microcomputer to have port CPU, ROM, RAM, I/O etc..Control unit 30
It can be between aftermentioned operation portion 26, mutually into row data communication.The control unit 30 of this example is based on from operation portion 26
Operation signal, the detection signal etc. from sensor class, to including the action of indoor Air Blast fan 7f indoor unit 1 or
The action of person's air-conditioning device entirety controls.Control unit 30 can be set in the framework of indoor unit 1, can also be set to room
In the framework of outer machine 2.
Next, being illustrated to the action of the refrigeration cycle 40 of air-conditioning device.Action when first, to refrigeration operation into
Row explanation.In Fig. 1, solid arrow indicates the flow direction of refrigerant when refrigeration operation.During refrigeration operation, refrigerant
Circuit is configured to：Using refrigerant flow path switching device 4, refrigerant flow path is switched over as indicated by the solid line, and
The refrigerant of low-temp low-pressure is set to flow in heat exchanger 7 indoors.
The gas refrigerant for the high temperature and pressure being discharged from compressor 3 flows into first via refrigerant flow path switching device 4
Outdoor heat exchanger 5.During refrigeration operation, outdoor heat exchanger 5 is functioned as condenser.That is, being handed in outdoor heat
In parallel operation 5, hand in the refrigerant of internal circulation, with the hot of the air (extraneous air) by outdoor Air Blast fan 5f air-supplies
It changes, the condensation heat of refrigerant radiates to wind pushing air.Thus it is flowed into the refrigerant condensation of outdoor heat exchanger 5 and becomes high pressure
Liquid refrigerant.The liquid refrigerant of high pressure flows into decompressor 6, and depressurizes and become the two-phase system cryogen of low pressure.Low pressure
Two-phase system cryogen via extend be piped 10b, flow into indoor unit 1 indoor heat exchanger 7.It is indoor during refrigeration operation
Heat exchanger 7 is functioned as evaporator.That is, indoors in heat exchanger 7, carry out internal circulation refrigerant, with by
The heat exchange of the air (room air) of indoor Air Blast fan 7f air-supplies, the heat of evaporation of refrigerant is absorbed from wind pushing air.As a result,
It is flowed into the refrigerant evaporation of indoor heat exchanger 7, and as the gas refrigerant or two-phase system cryogen of low pressure.In addition, by room
The air of interior Air Blast fan 7f air-supplies, is cooled because of the heat-absorbing action of refrigerant.The low pressure evaporated in heat exchanger 7 indoors
Gas refrigerant or two-phase system cryogen, via extending piping 10a and refrigerant flow path switching device 4, and inhaled by compressor 3
Enter.The refrigerant for being drawn into compressor 3 is compressed, to the gas refrigerant as high temperature and pressure.During refrigeration operation
The above cycle is repeated.
Next, action when to heating operation illustrates.In Fig. 1, dotted arrow indicates to freeze when heating operation
The flow direction of agent.During heating operation, refrigerant circuit is configured to：Using refrigerant flow path switching device 4, such as with empty
Line switches over refrigerant flow path as indicating, the refrigerant of high temperature and pressure is made to flow in heat exchanger 7 indoors.It is making
When heat run, refrigerant is flowed to the direction opposite with when refrigeration operation, and indoor heat exchanger 7 is functioned as condenser.
That is, indoors in heat exchanger 7, the refrigerant in internal circulation, the heat with the air by indoor Air Blast fan 7f air-supplies are carried out
It exchanges, the condensation heat of refrigerant radiates to wind pushing air.The air blown as a result, by indoor Air Blast fan 7f, because of refrigerant
Cooling effect and heated.
Fig. 2 is the front view of the surface structure of the indoor unit 1 for the air-conditioning device for indicating present embodiment.Fig. 3 is schematically
Indicate the front view of the internal structure (removing the state after front surface panel) of indoor unit 1.Fig. 4 is to show schematically indoor unit 1
In-built side view.The left of Fig. 4 indicates the front-surface side (indoor) of indoor unit 1.In the present embodiment, as
Indoor unit 1, which exemplifies, to be set to the bottom on the indoor ground as air-conditioning object space and sets type indoor unit 1.In addition, theory below
Each mutual position relationship of component parts (for example, upper and lower relation etc.), is essentially to be configured to use by indoor unit 1 in bright
In the state of relationship.
As shown in Figure 2 to 4, indoor unit 1 has framework 111, which has the shape of the rectangular-shape of lengthwise.
It is formed with the suction inlet 112 for sucking indoor air in the front surface lower part of framework 111.The suction inlet 112 of this example is in frame
It is set to the position on the lower than central portion in the upper and lower directions of body 111, and is set to the position of Near Ground.In framework 111
Front surface top, i.e., be formed with blow-off outlet 113 in the position higher than the height of suction inlet 112, which will be from sucking
The air of mouthfuls 112 suckings are to indoor blowout.The central portion that the blow-off outlet 113 of this example is set to the ratio upper and lower directions of framework 111 leans on
The position of top.Position in the front surface of framework 111 than suction inlet 112 against the top and than blow-off outlet 113 on the lower, setting
There is operation portion 26.Operation portion 26 is connected to control unit 30 via communication line, can be between control unit 30 mutually into line number
According to communication.In operation portion 26, by the operation of user come carry out indoor unit 1 (air-conditioning device) operation start operation, operating
End operation, the switching of operation mode, set temperature and the setting etc. for setting air quantity.It can be arranged to user in operation portion 26
Display unit, voice output portion of report information etc..
Framework 111 is hollow babinet, and front surface opening portion is formed in the front surface of framework 111.Framework 111 has：
Before the first front surface panel 114a, the second front surface panel 114b and the third in front surface opening portion can be removably installed on
Surface panel 114c.First front surface panel 114a, the second front surface panel 114b and third front surface panel 114c have
There is generally rectangular flat outer shape.First front surface panel 114a can removably be installed on the front surface of framework 111
The lower part of opening portion.It is formed with above-mentioned suction inlet 112 in the first front surface panel 114a.Second front surface panel 114b and first
Be adjacent to configuration above front surface panel 114a, and can removably be installed on framework 111 front surface opening portion up and down
Central portion on direction.Second front surface panel 114b is provided with aforesaid operations portion 26.Third front surface panel 114c and
It is adjacent to configuration above two front surface panel 114b, and can removably be installed on the front surface opening portion of framework 111
Top.It is formed with above-mentioned blow-off outlet 113 in third front surface panel 114c.
The inner space of framework 111 is roughly divided into：As the lower space 115a of air supplying part and positioned at lower space 115a
Top and as heat exchange department upper space 115b.Divided by lattice 20 between lower space 115a and upper space 115b
Every.Lattice 20 generally horizontally configures for example with flat shape.In lattice 20 at least formed with as lower part
The wind path opening portion 20a of wind path between space 115a and upper space 115b.By by the first front surface panel 114a from frame
Body 111 is removed, and is exposed to front-surface side to lower space 115a, by by table before the second front surface panel 114b and third
Faceplate panels 114c is removed from framework 111, to which upper space 115b is exposed to front-surface side.That is, being provided with the height of lattice 20
Degree is unanimous on the whole with the height of the upper end (or lower end of the second front surface panel 114b) of the first front surface panel 114a.Its
In, lattice 20 can be integrally formed with aftermentioned fan drum 108, can also be integrally formed with aftermentioned drip tray,
It can also be formed seperatedly with fan drum 108 and drip tray.
It is configured with indoor Air Blast fan 7f in lower space 115a, interior Air Blast fan 7f is generated from 112 court of suction inlet
To the air stream of blow-off outlet 113.The indoor Air Blast fan 7f of this example is sirocco fan, is had：Motor (not shown) and
With the output axis connection of motor and multiple wings circumferentially impeller 107 to configure at equal intervals.Rotary shaft (the motor of impeller 107
Output shaft) be configured to it is substantially parallel with the depth direction of framework 111.The impeller 107 of indoor Air Blast fan 7f is circinate
Fan drum 108 covers.The fan drum 108 of this example and indoor Air Blast fan 7f, configure in the inboard of lower space 115a
(back side), i.e., from the position that suction inlet 112 detaches.Fan drum 108 is for example formed seperatedly with framework 111.Outside fan
Near the swirl center of shell 108, it is formed with the suction opening portion 108b of suction draft air.Suction opening portion 108b be configured to
Suction inlet 112 is opposed.In addition, in the tangential direction of the whirlpool of fan drum 108, it is formed with the blowout for blowing out wind pushing air
Opening portion 108a.Blowout opening portion 108a is configured to upward, be connected to via the wind path opening portion 20a of lattice 20
Portion space 115b.In other words, blowout opening portion 108a is connected to via wind path opening portion 20a with upper space 115b.Blowout is opened
It can be directly connected between the open end and the open end of wind path opening portion 20a of oral area 108a, it can also be via conduit component etc.
And it connects indirectly.Fan drum 108 is configured at than lattice 20 on the lower, therefore the inside of fan drum 108 is lower part sky
Between 115a a part.At least inside of fan drum 108 in lower space 115a constitutes the part in wind path space 81.Its
In, wind path space 81 is the inner space of framework 111, and is the air wind path become from suction inlet 112 towards blow-off outlet 113
Space or the space that is connected to the space.
In the present embodiment, it is in framework 111 by blowing out the wind path of opening portion 108a and wind path opening portion 20a
Inside make the substantial unique path being connected between lower space 115a and upper space 115b.
In addition, being provided with electrical appliance kit 25 in lower space 115a, the electrical appliance kit 25 is such as containing and constitute control unit 30
Microcomputer, various electric components, substrate etc..
Upper space 115b is located at downstream than lower space 115a in the air stream generated by indoor Air Blast fan 7f
The position of side.Wind path space 81 in upper space 115b is configured with indoor heat exchanger 7.Indoors under heat exchanger 7
Side is provided with drip tray (not shown), the condensed water for receiving the surface condensation of heat exchanger 7 indoors.Drip tray can be with shape
As a part for lattice 20, it can also be formed and be configured on lattice 20 seperatedly with lattice 20.
Indoor tube 9a, 9b and extension are piped the part near 10a, 10b in lattice 20, are formed with top sky
Between the sides 115b are concave and the container-like recess portion 130 of the sides lower space 115a protrusion.Space in recess portion 130 is upper space
A part of 115b, but the height of the upper end (lower end of the second front surface panel 114b) than the first front surface panel 114a is low.
It is formed with opening portion in the front-surface side of recess portion 130, the lid 131 that can be dismounted using screw etc. is provided in the opening portion.
If removing lid 131, the space in recess portion 130 is exposed via opening portion in front-surface side.On the other hand, if installation lid 131,
Then the front-surface side of recess portion 130 is closed.
Connector portions 15a, 15b are configured at the space in recess portion 130.That is, the configuration of connector portions 15a, 15b is than the first front surface
The position of the upper end of panel 114a on the lower.From there through removing the first front surface panel 114a, and then lid 131 is removed, thus
Connector portions 15a, 15b can be made to expose in front-surface side.
In the inside of fan drum 108, and against the top than indoor Air Blast fan 7f (for example, more against the top than impeller 107)
Position, be provided with for detect refrigerant leakage refrigerant detection unit 99.Refrigerant detection unit 99 is for example to the system
The refrigerant concentration in air around cryogen detection unit 99 is detected, and detection signal is exported to control unit 30.
Control unit 30 determines whether the leakage of refrigerant based on the detection signal from refrigerant detection unit 99.
Made using gas sensor (for example, semiconductor-type gas sensor, hot wire type semiconductor-type gas sensor etc.)
For refrigerant detection unit 99.
Fig. 5 is the front view for the structure for showing schematically indoor heat exchanger 7 and its circumferential component.As shown in figure 5, this example
Indoor heat exchanger 7 be plate-shaped fins tubular type heat exchanger, have：The multiple wings for being spaced and being arranged side-by-side as defined in separating
Piece 70 and the multiple fins 70 of perforation simultaneously make refrigerant in multiple heat conducting pipes 71 of internal circulation.Heat conducting pipe 71 is configured to：
Multiple hair clip bend pipes 72, they have the longer straight sections for penetrating through multiple fins 70；Multiple U-bends 73, they will be multiple
Hair clip bend pipe 72 communicates with each other.It is engaged by brazed portion W (example at joint portion) between hair clip bend pipe 72 and U-bend 73.
In Figure 5, brazed portion W is indicated with bullet.In addition, it can also be more that the radical of heat conducting pipe 71, which can be one,.In addition, structure
It can also be more that the radical of the hair clip bend pipe 72 of Cheng Yigen heat conducting pipes 71, which can be one,.
Cylindric collector supervisor 61 is connected in the indoor tube 9a of gas side.It is connected with being responsible for 61 branches in collector
Multiple collector branch pipes 62.The end 71a of a side of heat conducting pipe 71 is connected separately in multiple collector branch pipes 62.Room in hydraulic fluid side
Interior piping 9b branches it is connected with multiple indoor refrigerant branch pipes 63.It is connected separately with heat conduction in multiple indoor refrigerant branch pipes 63
The end 71b of another party of pipe 71.Above-mentioned indoor tube 9a and collector supervisor 61 between, collector supervisor 61 with collector branch pipe 62 it
Between, between collector branch pipe 62 and heat conducting pipe 71, between indoor tube 9b and indoor refrigerant branch pipe 63 and indoor refrigerant branch
It is engaged by brazed portion W (example at joint portion) between pipe 63 and heat conducting pipe 71.
Back to Fig. 3 and Fig. 4, in the present embodiment, the brazed portion W of indoor heat exchanger 7 is (here, including interior
It is piped the brazed portion W of the circumferential components such as 9a, collector supervisor 61, collector branch pipe 62, indoor refrigerant branch pipe 63, indoor tube 9b),
It is configured at the wind path space 81 in upper space 115b.In addition, by indoor tube 9a and extending the connector connected between piping 10a
The portion 15a and connector portions 15b that will be connected between indoor tube 9b and extension piping 10b, is similarly configured at upper space
Wind path space 81 in 115b.
Fig. 6 is the flow chart of an example of the refrigerant leak detection processing for indicating to execute using control unit 30.The system
The processing of cryogen leak detection, in the operation process including air-conditioning device and in stopped process usually, or only in air-conditioning
In the stopped process of device, executed repeatedly with predetermined time interval.
In step s in fig. 6, control unit 30 obtains refrigerant based on the detection signal from refrigerant detection unit 99
The information of refrigerant concentration around detection unit 99.
Then, in step s 2, whether the refrigerant concentration around judgement refrigerant detection unit 99 is preset
It is more than threshold value.In the case where it is threshold value or more to be determined as refrigerant concentration, S3 is entered step, is being determined as that refrigerant concentration is small
In the case of threshold value, end processing.
In step s3, start the operating of indoor Air Blast fan 7f.In the case that Air Blast fan 7f has been operated indoors,
The state is kept to remain in operation.In step s3, using display unit, the voice output portion etc. for being set to operation portion 26, to user
Refrigerant leakage has occurred in report.
As described above, in refrigerant leak detection processing, in the case where detecting refrigerant leakage (that is, utilizing
In the case that the refrigerant concentration that refrigerant detection unit 99 detects is threshold value or more), the operating of indoor Air Blast fan 7f is opened
Begin.Thereby, it is possible to make the refrigerant of leakage spread, therefore refrigerant concentration can be inhibited locally to increase indoors.
As described above, in the present embodiment, as the refrigerant recycled in refrigeration cycle 40, such as using R32,
The combustible refrigerants such as HFO-1234yf, HFO-1234ze, R290, R1270.Therefore just in case refrigerant has occurred in machine 1 indoors
In the case of leakage, indoor refrigerant concentration rises, it is possible to result in combustible concentration region.
Above-mentioned combustible refrigerant, (for example, temperature is room temperature (25 DEG C)) is with the density bigger than air under atmospheric pressure.
Therefore in the case where refrigerant leakage occurs for the higher-height position apart from flooring, the refrigerant of leakage is declining
Middle diffusion, and space becomes uniform to refrigerant concentration indoors, therefore refrigerant concentration is difficult to increase.In contrast, in distance
A lower height of position of flooring, in the case of refrigerant leakage occurs, the refrigerant of leakage be accumulated in Near Ground compared with
Low position, therefore refrigerant concentration is easy part and increases.Thus the opposite raising of possibility in combustible concentration region is resulted in.
In the operation process of air-conditioning device, by the operating of the indoor Air Blast fan 7f of indoor unit 1, by air to interior
Blowout.Even if therefore just in case combustible refrigerant leaks into interior, since the combustible refrigerant of leakage is due to the air of blowout
It spreads indoors, therefore combustible concentration region will not be formed indoors.However, in the stopped process of air-conditioning device, indoor unit 1
Indoor Air Blast fan 7f also stop, thus the refrigerant of leakage can not be made to spread.Therefore the detection of leakage of refrigerant, in air-conditioning
It is necessary in the stopped process of device.
Be likely to occur in machine 1 indoors refrigerant leakage be：The brazed portion W of indoor heat exchanger 7 is (here, include
The brazed portion W of circumferential component) and connector portions 15a, 15b.In the present embodiment, indoor heat exchanger 7 (brazed portion W) and
Connector portions 15a, 15b are configured at wind path space 81 in upper space 115b, i.e. configuration more against the top than fan drum 108
Wind path space 81, the fan drum 108 are configured in lower space 115a.In addition, the blowout opening portion of fan drum 108
108a is connected to the wind path opening portion 20a of lattice 20.Therefore (that is, indoor Air Blast fan in the stopped process of air-conditioning device
In the stopped process of 7f), if in the leakage that refrigerant has occurred in brazed portion W or connector portions 15a, 15b, leak into upper space
The most amount of the refrigerant of 115b, will not be to other path detours inside framework 111, but via wind path opening portion
20a and blowout opening portion 108a are to dropping onto in fan drum 108.Therefore it is had occurred in brazed portion W or connector portions 15a, 15b
In the case that refrigerant leaks, the refrigerant concentration inside fan drum 108 can be made to increase rapidly.In the present embodiment,
Refrigerant detection unit 99 is configured at the inside of fan drum 108, therefore can make the refrigeration around refrigerant detection unit 99
Agent concentration increases rapidly, can detect the leakage of refrigerant earlier and more reliably.Thus, it is possible to earlier and more reliably
Carry out priming chamber in Air Blast fan 7f, come inhibit to be formed indoors combustible concentration region, earlier and more reliably carry out to
Report the reply of refrigerant leakage in family.Especially in the case where type indoor unit 1 is set at bottom, the position to indoor leakage of refrigerant occurs
The refrigerant set, easily become the lower position of Near Ground, therefore leak is accumulated in the lower position of Near Ground and easy shape
At combustible concentration region, therefore especially effectively.
In addition, in the present embodiment, even if being freezed in either one of brazed portion W and connector portions 15a, 15b
Agent leaks, and whole amounts of the refrigerant of leakage can be made to be flowed into fan drum 108.So if in fan drum
One refrigerant detection unit 99 is set in 108, without there is a possibility that system is respectively set in multiple positions of refrigerant leakage
Cryogen detection unit 99 can also detect the leakage of refrigerant earlier and more reliably.Therefore refrigerant detection can be cut down
The number of unit 99, it is thus possible to cut down the manufacturing cost of indoor unit 1 and the air-conditioning device including the indoor unit 1.
It is put into indoor Air Blast fan 7f (impeller 107) in addition, being provided in fan drum 108 and having multiple wings, therefore
The refrigerant in fan drum 108 is dropped onto, the surface collision with multiple wings of indoor Air Blast fan 7f, and be diverted on one side
By multiple flow paths that multiple wings divide, lower section is dropped onto on one side.If the refrigerant therefore dropped onto in fan drum 108 reaches room
Interior Air Blast fan 7f, then due to the diffusion into air so that refrigerant concentration reduces.In the present embodiment, due to by refrigerant
Detection unit 99 is configured at the position more against the top than indoor Air Blast fan 7f, therefore can detect the refrigeration of the high concentration before diffusion
Agent.
In addition, in the present embodiment, connector portions 15a, 15b are configured in upper space 115b, but are configured at than first
The position of the upper end of front surface panel 114a on the lower.Therefore by removing the first front surface panel 114a and lid 131, from
And connector portions 15a, 15b is made to be exposed to front-surface side.In addition, electrical appliance kit 25 be also configured at it is upper than the first front surface panel 114a
The position of end on the lower.Therefore in the present embodiment, even if can be carried out if not removing the second front surface panel 114b electrical
Wiring and the connection of refrigerant piping are removed, therefore are easy to carry out the operations such as installation, repairing or the dismounting of indoor unit 1.Separately
Outside, in the case where recess portion 130 is equipped with the common use state of lid 131, the front-surface side of recess portion 130 is closed.Therefore in connector
In the case that refrigerant leakage has occurred in portion 15a, 15b, the most amount of the refrigerant of leakage can be made, not to framework
Other path detours inside 111, but via wind path opening portion 20a and blowout opening portion 108a, it is flowed into fan drum
In 108.
Fig. 7 is the in-built front view of the indoor unit 1 for the first variation for showing schematically present embodiment.Fig. 8
It is the in-built side view for showing schematically indoor unit 1.As shown in Figure 7 and Figure 8, in this variation, refrigerant detection
Unit 99 be disposed in proximity to fan drum 108 blowout opening portion 108a (for example, blowout opening portion 108a adjacent open end,
The adjacent open end etc. of the wind path opening portion 20a of lattice 20) brazed portion W and connector portions 15a, 15b.
According to the structure of first variation, in addition to can obtain the effect same with the composition of the expressions such as Fig. 3 and Fig. 4 it
Outside, additionally it is possible to obtain following effect：Since refrigerant detection unit 99 is set to opening portion (for example, blowout opening portion 108a)
It is not disposed on the inside of fan drum 108, therefore in the installation exercise of refrigerant detection unit 99, it is not necessary that hand to be extend into
The inside of fan drum 108 can further improve the installation of refrigerant detection unit 99.In addition it is possible to obtain as follows
Effect：Since refrigerant detection unit 99 is disposed in proximity to the brazed portion W and connector portions 15a, 15b of blowout opening portion 108a,
Therefore the leakage of refrigerant can be detected earlier.
Fig. 9 is the in-built front view of the indoor unit 1 for the second variation for showing schematically present embodiment.Figure 10
It is the in-built side view for showing schematically indoor unit 1.As shown in Fig. 9 and Figure 10, in this variation, refrigerant inspection
Unit 99 is surveyed nearby in the suction opening portion 108b close to fan drum 108 (for example, the open end of suction opening portion 108b, suction
Enter the space etc. between the open end of opening portion 108b and suction inlet 112) lower section.
In the structure of the second variation, in the leakage refrigeration of (suction inlet 112) outside 111 from upper space 115b to framework
In the outflow path of agent, refrigerant detection unit 99 is set to the downstream side of indoor Air Blast fan 7f (impeller 107 (wing)).So
And the diffusion due to being carried out using interior Air Blast fan 7f (impeller 107 (wing)) makes refrigerant concentration reduce, and is from sucking
Opening portion 108b is deformed to lower space 115a and then after suction inlet 112 is flowed out to outside framework 111 according to second
The structure of example, can obtain the effect same with the structure of the expressions such as Fig. 3 and Fig. 4.In addition, according to the knot of the second variation
Structure can obtain following effect in the same manner as first variation：Due to refrigerant detection unit 99 be set to opening portion (for example,
Suction opening portion 108b), the inside without being disposed on fan drum 108, therefore make in the installation of refrigerant detection unit 99
When industry, it is not necessary that hand to be extend into the inside of fan drum 108, it can further improve the installation of refrigerant detection unit 99.
It is furthermore possible to obtain following effect：Since refrigerant detection unit 99 is disposed in proximity to the lower section of suction opening portion 108b,
It can more reliably detect the refrigerant that density ratio air is big under atmospheric pressure.
In addition, in the present embodiment, including and forming suction inlet 112 in the lower part of framework 111, and formed above it
There is the structure of blow-off outlet 113, but the upper and lower relation of suction inlet 112 and blow-off outlet 113 can overturn.I.e., or in frame
The sides lower space 115a of body 111 form blow-off outlet 113 (under shed portion), the sides upper space 115b formed suction inlet 112 (on
Opening portion) structure.In the case of such a construction, it is configured with the upper space 115b of indoor heat exchanger 7, in air-flow of blowing
The lower space 115a of Air Blast fan 7f and fan drum 108 is on the upstream side in than disposed chamber.In addition, in the structure
In the case of, fan drum 108 is set as：So that suction opening portion 108b is connected to upper space 115b and blows out opening portion 108a
It is opposed with blow-off outlet 113 (under shed portion).
Embodiment 2
The air-conditioning device of embodiments of the present invention 2 is illustrated.Figure 11 is the sky for showing schematically present embodiment
Adjust the in-built front view of the indoor unit 1 of device.Figure 12 is the in-built side view for showing schematically indoor unit 1.
In addition, for the inscape with function same as embodiment 1 and effect, marks identical reference numeral and omit
Its explanation.
As shown in figs. 11 and 12, the refrigerant detection unit 99 of present embodiment is in lower space 115a, setting
The space outside of fan drum 108 (that is, in lower space 115a) between suction opening portion 108b and suction inlet 112.That is,
In the present embodiment, same as the second variation of the above embodiment 1, refrigerant detection unit 99 is in leakage of refrigerant
In outflow path, it is set to the downstream side of indoor Air Blast fan 7f.In addition, the allocation position of refrigerant detection unit 99, preferably
Lower section in the space.
In the refrigerant that upper space 115b (brazed portion W or connector portions 15a, 15b) is leaked, via fan drum 108,
Whole amounts flows into lower space 115a.Then, leakage of refrigerant flows out to frame via suction inlet 112 from lower space 115a
Outside body 111.As noted previously, as dense to reduce refrigerant using the diffusion that interior Air Blast fan 7f (impeller 107 (wing)) is carried out
Degree, be from suction opening portion 108b to lower space 115a and then after suction inlet 112 is flowed out to outside framework 111.Therefore it makes
The allocation position of cryogen detection unit 99, inside, blowout opening portion 108a or the sucking for being not necessarily limited to fan drum 108 are opened
Oral area 108b, as long as in lower space 115a.Especially since in lower space 115a suction opening portion 108b with
Space between suction inlet 112 becomes the main outflow path of leakage of refrigerant, therefore preferably as refrigerant detection unit 99
Allocation position.
In addition, in space of the refrigerant detection unit 99 between suction opening portion 108b and suction inlet 112, it is preferably provided with
In height identical with the open lower end 108b1 of suction opening portion 108b or than the position of height on the lower.This is because
In the present embodiment, using the big refrigerant of density ratio air under atmospheric pressure, therefore from the opening of suction opening portion 108b
The leakage of refrigerant that lower end 108b1 nearby flows out, drops onto under the space between suction opening portion 108b and suction inlet 112
Side.
In addition, in space of the refrigerant detection unit 99 between suction opening portion 108b and suction inlet 112, it is preferably provided with
In height identical with the open lower end 112a of suction inlet 112 or than the position of height on the lower.Wherein, in this embodiment party
In formula, open lower end 112a is set to more against the top than the bottom surface sections 111a of framework 111.In the bottom of lower space 115a, inhaling
Enter between the open lower end 108b1 of opening portion 108b and the open lower end 112a of suction inlet 112, is formed with the little Rong of upper opening
Long-pending recess portion.In the present embodiment, due to the use of the big refrigerant of density ratio air under atmospheric pressure, thus leakage of refrigerant
It is a little be trapped in the recess portion, without being flowed out to outside framework 111.Therefore setting refrigerant detects list in this recess
Member 99, so as to more reliably detect the leakage of refrigerant.In addition, the refrigeration dose for being trapped in the recess portion is minute quantity,
And there is no the ignition sources such as electric component in the recess portion, therefore there is no the mysteries that contingency is caught fire.
In addition, if the allocation position of connector portions 15a, 15b is more against the top than refrigerant detection unit 99, can not configure
In upper space 115b, and it is disposed on lower space 115a.Refrigerant has the density bigger than air under atmospheric pressure, therefore
It can if the position more against the top than refrigerant detection unit 99 even if connector portions 15a, 15b configure in lower space 115a
As described above, the leakage of refrigerant is more reliably detected.
In addition, according to the present embodiment, energy same as the first variation of the above embodiment 1 and the second variation
Access following effect：In the installation exercise of refrigerant detection unit 99, it is not necessary that hand is extend into fan drum 108
Portion, therefore can further improve the installation of refrigerant detection unit 99.
Embodiment 3
The air-conditioning device of embodiments of the present invention 3 is illustrated.Figure 13 is the sky for showing schematically present embodiment
Adjust the in-built front view of the indoor unit 1 of device.Figure 14 is the in-built side view for showing schematically indoor unit 1.
In addition, to the inscape with function same as embodiment 1 and effect, marks identical reference numeral and omit it
Explanation.
As shown in Figure 13 and Figure 14, the indoor unit 1 of present embodiment and the difference of the indoor unit 1 of embodiment 1 exist
In：Lattice 20 has flat shape, and recess portion 130 shown in Fig. 3 and Fig. 4 etc. is not formed at lattice 20.But
In the present embodiment, same as embodiment 1, connector portions 15a, 15b are configured at upper space 115b.In addition, Figure 13 with
And in Figure 14, in the inside of fan drum 108 and in the position more against the top than indoor Air Blast fan 7f, it is provided with refrigerant detection
Unit 99, refrigerant detection unit 99 can also be set to position shown in Fig. 7~Figure 12.Present embodiment can also obtain with
The same effect of embodiment 1 or 2.
Embodiment 4
The air-conditioning device of embodiments of the present invention 4 is illustrated.Figure 15 is the sky for showing schematically present embodiment
Adjust the in-built front view of the indoor unit 1 of device.Figure 16 is the in-built side view for showing schematically indoor unit 1.
In addition, to the inscape with function same as embodiment 1 and effect, identical reference numeral is marked, and omit
Its explanation.
As shown in Figure 15 and Figure 16, in the present embodiment, in the side wall of the blowout opening portion 108a of fan drum 108
A part be formed with bellying 132, packed within the bellying 132 cryogen pipe arrangement (indoor tube 9a, 9b and extend piping
10a, 10b) the mode of a part bloat.It is formed with opening portion in the front-surface side of bellying 132, is provided in the opening portion
The lid 133 that can be dismounted using screw etc..If removing lid 133, the space in bellying 132 is via opening portion and in preceding table
Expose surface side.On the other hand, if installation lid 133, the front-surface side of bellying 132 are closed.Bellying 132 and fan drum
108 other parts are same, are located in lower space 115a.
Connector portions 15a, 15b are configured at the space in bellying 132.Space in bellying 132 is in fan drum 108
Space a part, and be a part of lower space 115a.That is, connector portions 15a, 15b are configured at than the first front surface
The position of the upper end of panel 114a on the lower.As a result, by removing the first front surface panel 114a, and then lid 133 is removed, to
Connector portions 15a, 15b can be made to expose to front-surface side.In addition, connector portions 15a, 15b are configured at than indoor Air Blast fan 7f's
Impeller 107 (wing) and the position against the top of refrigerant detection unit 99.In addition, in Figure 15 and Figure 16, in fan drum
108 inside, and the position more against the top than indoor Air Blast fan 7f is provided with refrigerant detection unit 99, but refrigerant detects
Unit 99 can also be set to position shown in Fig. 7~Figure 12.
In the present embodiment, in the case where refrigerant leakage has occurred in brazed portion W, leakage same as embodiment 1
The most amount of refrigerant is flowed into lower space 115a via fan drum 108.In addition, connector portions 15a, 15b are arranged
In in fan drum 108, therefore in the case where refrigerant leakage has occurred in connector portions 15a, 15b, leakage of refrigerant is almost
Whole amounts are flowed into lower space 115a via fan drum 108.Therefore by the way that refrigerant detection unit 99 to be set to
Lower space 115a, so as to detect earlier and more reliably the leakage of refrigerant.
As described above, the air-conditioning device of the above embodiment has：Refrigeration cycle 40, matches via refrigerant
It manages and makes refrigerant circulation；Outdoor unit 2 at least accommodates the compressor 3 and outdoor heat exchanger 5 of refrigeration cycle 40；Indoor unit
1, the indoor heat exchanger 7 of refrigeration cycle 40 is at least accommodated, and be piped via the extension of the part as refrigerant piping
10a, 10b and connect with outdoor unit 2, there is refrigerant the density bigger than the density of air under atmospheric pressure, indoor unit 1 to have：
Framework 111；Upper space 115b is configured with indoor heat exchanger 7 in the inside of framework 111；Lower space 115a,
The inside of framework 111 is arranged in the position than upper space 115b on the lower；Indoor Air Blast fan 7f is configured at lower part sky
Between 115a；Fan drum 108 is configured at lower space 115a, for covering indoor Air Blast fan 7f and being formed with blowout
Opening portion 108a and suction opening portion 108b；Refrigerant detection unit 99 blows out opening portion 108a or suction opening portion 108b
A side (in this case, it is blowout opening portion 108a) be connected to upper space 115b, refrigerant detection unit 99 is set to lower part
Space 115a.
In addition, in the air-conditioning device of the above embodiment, refrigerant detection unit 99, can be in lower space 115a
It is set to inside, the blowout opening portion 108a or suction opening portion 108b of fan drum 108.
In addition, in the air-conditioning device of the above embodiment, refrigerant detection unit 99, can be in lower space 115a
It is configured at the position more against the top than indoor Air Blast fan 7f.
In addition, in the air-conditioning device of the above embodiment, it is provided in framework 111：As suction inlet or blow-off outlet
It the under shed portion (in this example be suction inlet 112) of one side and is configured at than under shed portion against the top and becomes suction inlet or blowout
Mouthful another party upper opening portion (in this example be blow-off outlet 113), refrigerant detection unit 99, can be in lower space 115a
It is set to another party's (being suction opening portion 108b in this example) and the under shed of blowout opening portion 108a or suction opening portion 108b
Space between portion.
In addition, in the air-conditioning device of the above embodiment, refrigerant detection unit 99 is opened in blowout opening portion or sucking
Space between another party's (being suction opening portion 108b in this example) and under shed portion (being suction inlet 112 in this example) of oral area
In, can be arranged under the opening of blowout opening portion or another party's (in this example be suction opening portion 108b) in suction opening portion
Hold the identical height of 108b1 or than the position of height on the lower.
In addition, in the air-conditioning device of the above embodiment, the open lower end of under shed portion (being suction inlet 112 in this example)
112a can be set to the position more against the top than the bottom surface sections 111a of framework 111.
In addition, in the air-conditioning device of the above embodiment, refrigerant detection unit 99 can be arranged under shed portion
The identical height of open lower end 112a of (in this example be suction inlet 112) or than the position highly on the lower.
In addition, in the air-conditioning device of the above embodiment, indoor unit 1 can also have lattice 20, the lattice 20
Upper space 115b and lower space 115a are separated, are formed in lattice 20 empty as upper space 115b and lower part
Between wind path between 115a wind path opening portion 20a, the side for blowing out opening portion or suction opening portion (opens in this example for blowout
Oral area 108a), it can be connected to upper space 115b via wind path opening portion 20a.
In addition, in the air-conditioning device of the above embodiment, it, can between indoor heat exchanger 7 and extension piping 10a, 10b
To be connected via connector portions 15a, 15b, connector portions 15a, 15b can be configured at upper space 115b.
In addition, in the air-conditioning device of the above embodiment, it, can between indoor heat exchanger 7 and extension piping 10a, 10b
To be connected via connector portions 15a, 15b, connector portions 15a, 15b can be set to than indoor Air Blast fan 7f and refrigerant inspection
Survey the position against the top of unit 99.
In addition, in the air-conditioning device of the above embodiment, front surface opening can be formed in the front surface of framework 111
Portion, framework 111 at least have：First front surface panel 114a, can removably be installed on the lower part in front surface opening portion；The
Two front surface panel 114b, can removably be installed on part more against the top than above-mentioned lower part in the portion of front surface opening, connector
Portion 15a, 15b are set to the position of upper end on the lower than the first front surface panel 114a.
In addition, in the air-conditioning device of the above embodiment, indoor heat exchanger 7 can have the flow path as refrigerant
A part the mutual joint portion (for example, brazed portion W) of pipe.
In addition, in the air-conditioning device of the above embodiment, can also have control unit 30, the control unit 30 to be based on refrigeration
The detection signal of agent detection unit 99, carrys out Air Blast fan 7f in control room, in the case where detecting refrigerant leakage, control unit
30 make indoor Air Blast fan 7f operate.
In addition, in the air-conditioning device of the above embodiment, indoor unit 1 can also be to be set to the bottom of flooring to set type
Indoor unit.
In addition, in the air-conditioning device of the above embodiment, refrigerant can be combustible refrigerant.
Other embodiment
The present invention is not limited to the above embodiments, but can carry out various modifications.
For example, in the above-described embodiment, the example of sirocco fan is enumerated as indoor Air Blast fan 7f, but
It is that can also use turbofan, cross flow fan, aerofoil fan (for example, propeller fan) or diagonal flow fan, as interior
Air Blast fan 7f.For example, in the case where using aerofoil fan as interior Air Blast fan 7f, outside the fan using cylindrical shape
Shell.The axial end portion of fan drum can also be formed as bell mouth shape.
In addition, in the above-described embodiment, including indoor heat exchanger 7 (brazed portion W) and connector portions 15a, 15b being equal
The structure being configured in upper space 115b then connects but as long as at least indoor heat exchanger 7 is configured in upper space 115b
Head 15a, 15b can also be configured at lower space 115a.According to the structure, refrigerant leakage at least has occurred in brazed portion W
In the case of, the leakage of refrigerant can be detected earlier and more reliably.
In addition, in the above-described embodiment, enumerating and forming suction inlet 112 in the lower part of framework 111, more against the top than its
Position formed blow-off outlet 113 structure example, but the upper and lower relation of suction inlet 112 and blow-off outlet 113 can be opposite.
That is, can also be configured to form blow-off outlet 113 in the sides lower space 115a of framework 111, is formed and inhaled in the sides upper space 115b
Entrance 112.In the case of such a construction, be configured with indoor heat exchanger 7 upper space 115b, in air-flow of blow be in than
The lower space 115a of Air Blast fan 7f and fan drum 108 is on the upstream side in disposed chamber.Fan drum 108 is set as making suction
Enter opening portion 108b to be connected to upper space 115b.With this configuration, effect same as the above embodiment can also be obtained.
In addition, in the above-described embodiment, the delay portion of the refrigerant as leakage is preferably not present in wind path space 81
Recess portion (recess portion of upper opening).In addition, there are such recess portion, the volume of preferably recess portion is smaller.
In addition, in the above-described embodiment, the example of combustible refrigerant is enumerated as refrigerant, but as long as be
The refrigerant bigger than the density of air under atmospheric pressure, then the flammability regardless of refrigerant can be earlier and more reliable
Ground detects the leakage of refrigerant.
In addition, the respective embodiments described above, variation, can be combined with each other to implement.
Claims (14)
1. a kind of air-conditioning device, which is characterized in that have：
Refrigeration cycle makes refrigerant be recycled via refrigerant piping；
Outdoor unit at least accommodates the compressor and outdoor heat exchanger of the refrigeration cycle；And
Indoor unit at least accommodates the indoor heat exchanger of the refrigeration cycle, and via one as the refrigerant piping
Partial extension is piped and is connect with the outdoor unit,
The refrigerant has density bigger than the density of air under atmospheric pressure,
The indoor unit has：
Framework；
Upper space is configured with the indoor heat exchanger in the inside of the framework；
Lower space is set to the position on the lower than the upper space in the inside of the framework；
Fan is configured at the lower space；
Fan drum is configured at the lower space, for covering the fan, and is formed with blowout opening portion and sucking
Opening portion；And
Refrigerant detection unit,
One side of the blowout opening portion or the suction opening portion, is connected to the upper space,
The refrigerant detection unit is set to the lower space,
Between the indoor heat exchanger and extension piping, connected via connector portions,
It is formed with front surface opening portion in the front surface of the framework, the framework at least has：First front surface panel, energy
Enough lower parts for being removably installed on the front surface opening portion；Second front surface panel, can removably be installed on it is described before
The part more against the top than the lower part in surface hole portion,
The connector portions are configured at the upper space, and the connector portions be set to it is upper than the first front surface panel
The position of end on the lower.
2. air-conditioning device according to claim 1, which is characterized in that
The refrigerant detection unit is set to the inside of the fan drum.
3. air-conditioning device according to claim 1, which is characterized in that
The refrigerant detection unit is set to the blowout opening portion or the suction opening portion.
4. air-conditioning device according to claim 1, which is characterized in that
The refrigerant detection unit is configured at position in the lower space, more against the top than the fan.
5. air-conditioning device according to claim 1, which is characterized in that
It is provided in the framework：Under shed portion becomes a side of suction inlet or blow-off outlet；Upper opening portion is configured at ratio
Under shed portion position against the top, and become another party of the suction inlet or the blow-off outlet,
The refrigerant detection unit is set in the lower space, the described blowout opening portion or the suction opening portion
Space between another party and the under shed portion.
6. air-conditioning device according to claim 5, which is characterized in that
The refrigerant detection unit be arranged it is described blowout opening portion or the suction opening portion another party with it is described under open
Height in space between oral area, identical with the blowout opening portion or the open lower end of another party in suction opening portion
It spends or than the position of height on the lower.
7. air-conditioning device according to claim 5, which is characterized in that
The open lower end in the under shed portion is set to the position more against the top than the bottom surface sections of the framework.
8. air-conditioning device according to claim 7, which is characterized in that
The refrigerant detection unit is arranged in height identical with the open lower end under shed portion or is highly leaned on than this
The position of lower section.
9. air-conditioning device according to claim 1, which is characterized in that
The indoor unit is also equipped with lattice, which is separated the upper space and the lower space,
Be formed with wind path opening portion in the lattice, the wind path opening portion become the upper space and the lower space it
Between wind path,
One side of the blowout opening portion or the suction opening portion connects via the wind path opening portion with the upper space
It is logical.
10. according to air-conditioning device according to any one of claims 1 to 9, which is characterized in that
The connector portions are set to the position more against the top than the fan and the refrigerant detection unit.
11. according to air-conditioning device according to any one of claims 1 to 9, which is characterized in that
The indoor heat exchanger, which has, manages mutual joint portion, and the mutual joint portion of the pipe becomes the flow path of the refrigerant
A part.
12. according to air-conditioning device according to any one of claims 1 to 9, which is characterized in that
Also have control unit, detection signal of the control unit based on the refrigerant detection unit, to control the fan,
In the case where detecting the leakage of the refrigerant, the control unit makes the fan running.
13. according to air-conditioning device according to any one of claims 1 to 9, which is characterized in that
Set type indoor unit in the bottom that the indoor unit is disposed on flooring.
14. according to air-conditioning device according to any one of claims 1 to 9, which is characterized in that
The refrigerant is combustible refrigerant.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-145188 | 2014-07-15 | ||
| JP2014145188 | 2014-07-15 | ||
| JP2015-013649 | 2015-01-27 | ||
| JP2015013649A JP5865529B1 (en) | 2014-07-15 | 2015-01-27 | Air conditioner |
| JPPCT/JP2015/054303 | 2015-02-17 | ||
| PCT/JP2015/054303 WO2016009667A1 (en) | 2014-07-15 | 2015-02-17 | Air conditioning apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105318508A CN105318508A (en) | 2016-02-10 |
| CN105318508B true CN105318508B (en) | 2018-08-31 |
Family
ID=
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1392944A (en) * | 2000-09-26 | 2003-01-22 | 大金工业株式会社 | Air conditioner |
| CN103392102A (en) * | 2011-09-14 | 2013-11-13 | 松下电器产业株式会社 | Air conditioner |
| CN204787071U (en) * | 2014-07-15 | 2015-11-18 | 三菱电机株式会社 | Air conditioner |
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1392944A (en) * | 2000-09-26 | 2003-01-22 | 大金工业株式会社 | Air conditioner |
| CN103392102A (en) * | 2011-09-14 | 2013-11-13 | 松下电器产业株式会社 | Air conditioner |
| CN204787071U (en) * | 2014-07-15 | 2015-11-18 | 三菱电机株式会社 | Air conditioner |
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