CN106133452B - Air conditioner - Google Patents
Air conditioner Download PDFInfo
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- CN106133452B CN106133452B CN201480074164.7A CN201480074164A CN106133452B CN 106133452 B CN106133452 B CN 106133452B CN 201480074164 A CN201480074164 A CN 201480074164A CN 106133452 B CN106133452 B CN 106133452B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/20—Electric components for separate outdoor units
- F24F1/22—Arrangement or mounting thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/20—Electric components for separate outdoor units
- F24F1/24—Cooling of electric components
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/26—Refrigerant piping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/46—Component arrangements in separate outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/46—Component arrangements in separate outdoor units
- F24F1/48—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/005—Arrangement or mounting of control or safety devices of safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/14—Details or features not otherwise provided for mounted on the ceiling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/029—Control issues
- F25B2313/0294—Control issues related to the outdoor fan, e.g. controlling speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/12—Inflammable refrigerants
- F25B2400/121—Inflammable refrigerants using R1234
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
- F25B2500/222—Detecting refrigerant leaks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
- Other Air-Conditioning Systems (AREA)
- Ventilation (AREA)
Abstract
The present invention, which provides, to use the lesser refrigerant of global warming potential GWP to avoid risk on fire simultaneously and also can be reduced the air conditioner of the setting number of refrigerant leakage detector.Air conditioner is smaller using global warming potential and has flammable refrigerant, and the electric part box (28) have the refrigerating cycles constituent parts such as the heat exchanger (22) for accommodating that above-mentioned refrigerant is flowed through in the cabinet (2a), be accommodated with electric component etc. and the heat source machine (2) being made of the air supply device (24) of motor (24a) driving.And, it is configured to form the flowing of air in above-mentioned cabinet using above-mentioned air supply device, and the refrigerating cycle constituent part that above-mentioned refrigerant is flowed through is set in the way of the flowing of the intracorporal air of above-mentioned case, the position of the above-mentioned refrigerating cycle constituent part upstream side of ratio in the way for the flowing that the electric components such as motor of above-mentioned electric part box and above-mentioned air supply device are configured at above-mentioned air.
Description
Technical field
The present invention relates to air conditioners, more particularly to use global warming potential GWP (Global Warming
Potential) the air conditioner of lesser refrigerant.
Background technique
Recently, from the viewpoint of preventing global warming, making for the lesser refrigerant of global warming potential GWP is had studied
With proposition has used the air conditioner of the natural refrigerant of hydrocarbon system in Japanese Unexamined Patent Publication 11-37619 bulletin (patent document 1).And
And in the patent document 1, setting detects the refrigerant leak detection of the leakage of the natural refrigerant of flammable hydrocarbon system and output
Mechanism, in the case where detecting refrigerant leakage by the refrigerant leak detection mechanism, using fan etc. to leakage of refrigerant
It assigns stirring action to be allowed to spread, so that leakage of refrigerant be prevented to be detained and form flammable area.
Also, as the previous air conditioner in view of refrigerant leakage countermeasure, there are Japanese Unexamined Patent Publication 2002-61996 public affairs
Report device documented by (patent document 2).In the patent document 2, in the room setting detection refrigerant for being provided with indoor unit
Leaked gas detector, if refrigerant leakage if be set to indoor unit alarm device sound an alarm, and make compressor and
The operating of outdoor Air Blast fan, closes outdoor expansion valve, makes four-way switching valve refrigeration operation side, and unlimited indoor expansion valve and to
Outdoor unit recycles refrigerant.
Existing technical literature
Patent document
Patent document 2: Japanese Unexamined Patent Publication 2002-61996 bulletin
Patent document 1: Japanese Unexamined Patent Publication 11-37619 bulletin
Summary of the invention
Problems to be solved by the invention
In above patent document 1, the refrigerant as use in refrigeration system has used the natural refrigerant of hydrocarbon system, so that the whole world becomes
Warm latent energy value GWP becomes smaller, but the flammability of the natural refrigerant of hydrocarbon system is stronger, so that the refrigerant as use in refrigeration system is difficult to benefit
With.
Also, in above patent document 2, the use of the lesser refrigerant of global warming potential GWP is not considered.
As the lesser refrigerant of global warming potential GWP, recently, HFO1234yf (GWP=4), HFO1234ze
(GWP=6) etc. refrigerants attract attention.Using refrigerants such as these HFO1234yf, HFO1234ze as the refrigeration of air conditioner
Agent and in the case where utilizing, density is lower when these refrigerants HFO1234yf, HFO1234ze exist as steam and volume becomes
Big project.For example, compared with refrigerant R410A, it is contemplated that compressor sucting vapor ratio volume HFO1234yf's
In the case of be 180% of R410A or so, and be 240% or so of R410A in the case where HFO1234ze and become larger.Therefore,
There is the refrigerant pressure loss of the low-pressure side of air conditioner to become larger and (compare under the conditions of, be such as 3 times or more of R410A), air-conditioning
The project that the power consumption of the compressor of machine becomes larger.
Also, the refrigerant smaller as global warming potential GWP also studied R32 (GWP=675).
But these refrigerants (HFO1234yf, HFO1234ze, R32) although each flammability it is weaker, still
It is flammable refrigerant (hereinafter, the weaker flammable refrigerant of the refrigerant compared to hydrocarbon system to be referred to as to the refrigeration of micro- combustion property
Agent).
In above patent document 1 and 2, take detection refrigerant leakage and there are refrigerant leakage in the case where
Countermeasure, but in order to detect the leakage of flammable or micro- combustion property refrigerant and prevent its on fire etc., it needs in outdoor pusher side and room
Refrigerant leakage detector is arranged in interior pusher side both sides, to also there is the project of cost increase.
It is an object of the invention to obtain to be able to use the lesser refrigerant of global warming potential GWP while can keep away
Exempt from risk on fire and the air conditioner of the setting number of refrigerant leakage detector can be reduced.
Solution for solving the problem
To achieve the goals above, the present invention provides a kind of air conditioner, smaller using global warming potential and have
Flammable refrigerant, and have heat source machine, which accommodates the heat exchanger etc. that above-mentioned refrigerant is flowed through in cabinet
It refrigerating cycle constituent part, the electric part box for being accommodated with electric component etc. and is made of the air supply device of motor driving,
Above-mentioned air conditioner is characterized in that, is configured to form the flowing of air in above-mentioned cabinet using above-mentioned air supply device, and on
In the way for stating the flowing that the refrigerating cycle constituent part that refrigerant is flowed through is set to the intracorporal air of above-mentioned case, above-mentioned electrical part
The above-mentioned freezing of ratio in the way for the flowing that the electric components such as the motor of part case and above-mentioned air supply device are configured at above-mentioned air follows
The position of ring element component upstream side.
The effect of invention is as follows.
According to the present invention, having, which can get, is able to use the lesser refrigerant of global warming potential GWP while can be avoided
The effect of the air conditioner of risk on fire and the setting number that refrigerant leakage detector can be reduced.
Detailed description of the invention
Fig. 1 is the brief configuration figure for illustrating the embodiment 1 of air conditioner of the invention.
Fig. 2 is the refrigerating cycle structure chart of air conditioner shown in FIG. 1.
Fig. 3 is the top view for indicating the ceiling flush type heat source machine of the embodiment of the present invention 1.
Fig. 4 is the perspective view for illustrating the example of the ceiling flush type heat source machine as previous air conditioner.
Fig. 5 is the top view for illustrating the flowing of the air in ceiling flush type heat source machine shown in Fig. 4.
Specific embodiment
Hereinafter, being illustrated using specific embodiment of the attached drawing to air conditioner of the invention.In addition, in each figure, mark
The part of the same symbol indicates part identically or comparably.
Embodiment 1
It is illustrated in conjunction with embodiment 1 of the FIG. 1 to FIG. 3 to air conditioner of the invention.Fig. 1 is to illustrate air conditioner of the invention
Embodiment 1 brief configuration figure, Fig. 2 is the refrigerating cycle structure chart of air conditioner shown in FIG. 1, and Fig. 3 indicates of the invention
The top view of the ceiling flush type heat source machine of embodiment 1.In addition, in order to compare, also using Fig. 4 and Fig. 5 to previous sky
The example of tune machine is illustrated.
In the present embodiment, to the refrigerant used with the hydrocarbon system of propane, iso-butane etc as combustible refrigerant
The refrigerant (for example, burning velocity is 10cm/s micro- combustion property refrigerant below) of the micro- combustion weaker compared to flammability
The example of the air conditioner of HFO1234yf or HFO1234ze is illustrated.In addition, smaller as global warming potential GWP
Refrigerant, also include as described above R32, but in the present embodiment, to used as refrigerant HFO1234yf or
The example of HFO1234ze is illustrated.
As described above, the density of refrigerant HFO1234yf, HFO1234ze when as steam is lower and volume becomes larger,
The project for becoming larger to the refrigerant pressure loss of low-pressure side, and thering is the power consumption of the compressor of air conditioner to become larger.Therefore, this reality
It applies in example, in order to reduce the refrigerant pressure loss of low-pressure side, heat source machine is set as being set to the ceiling portion etc. in fabrication
And import outdoor air and carry out the ceiling flush type heat source machine of heat exchange, so as to shorten heat source machine and indoor unit away from
From (that is, length of refrigerant piping).Hereinafter, being illustrated in conjunction with Fig. 1 to the specific structure.
Fig. 1 is the letter of the example of the setting state of the air conditioner of the present embodiment that explanation has ceiling flush type heat source machine
Want structure chart.In Fig. 1,1 is fabrication, and 2 be to accommodate the refrigerating cycles such as heat exchanger that above-mentioned refrigerant is flowed through in cabinet to want
Plain component, the electric part box for being accommodated with electric component etc. and the heat source machine being made of air supply device of motor driving etc.,
In the present embodiment, the so-called ceiling for ceiling portion (in ceiling) 1a which is set as being set in fabrication 1
Built-in type heat source unit.3 be the indoor unit that air conditioning is carried out to indoor 1b, and the indoor unit 3 and above-mentioned heat source machine 2 pass through refrigerant
Piping 4,5 (4: gas side refrigerant piping, 5: hydraulic fluid side refrigerant piping) connection.
In addition, above-mentioned heat source machine 2 is constituted are as follows: suck outdoor air as shown in arrow 6, be set to changing in heat source machine 2
So that outdoor air and refrigerant is carried out heat exchange in hot device, and blows the air after the heat exchange to outdoor as shown in arrow 7
Out.
The air of 1b in above-mentioned 3 ground as shown in arrow 11 suction chamber of indoor unit makes in the heat exchanger being set in indoor unit 3
Room air and refrigerant carry out heat exchange, and make the air (when refrigeration) cooled or warmed-up sky after the heat exchange
Thus gas (when heating) carries out the air conditioning of the indoor 1b where occupant 10 as shown in arrow 9 to indoor blowout.
In general, heat source machine 2 is set to outside the roof of fabrication 1 or the wall of fabrication 1 mostly as outdoor unit
Deng, but by (being smallpox in the present embodiment comparing closer ceiling portion with a distance from indoor unit 3 outside roof, fabrication
In plate) 1a, it is arranged as ceiling flush type heat source machine 2, can shortens compared with the heat source machine of outdoor setting by indoor unit 3
The refrigerant piping 4,5 connected with heat source machine 2.In the present embodiment, refrigeration that above-mentioned heat source machine 2 and above-mentioned indoor unit 3 are connected
The length that agent is piped 4,5 is configured to 10m or less.Since above-mentioned refrigerant piping 4,5 can be shortened like this, so can reduce
The refrigerant pressure loss of the low-pressure side of the compressor of air conditioner.
That is, volume becomes larger, so low pressure due to density reduction when refrigerant HFO1234yf, HFO1234ze are as steam
The refrigerant pressure loss of side tends to get bigger, but by constituting as in this embodiment, can reduce the refrigerant pressure of low-pressure side
Power loss, so as to reduce the power consumption of compressor, even if therefore can get lower used as global warming potential
HFO1234yf, HFO1234ze of refrigerant, efficiency also higher air conditioner.
In addition, in embodiment shown in FIG. 1, to the example for the state that heat source machine 2 is directly contacted with the air outside fabrication 1
It is illustrated, but according to the reason for more shortening the distance between indoor unit 3 etc., it is also considered that heat source machine 2 is set to and is built
Inside object.Under such circumstances, heat source machine 2 will not be contacted directly with the air outside fabrication, be thus configured to via air hose
External air is imported above-mentioned heat source machine 2 by road.If constituting like this, above-mentioned heat source machine 2 and above-mentioned indoor unit 3 are connected
The length of the refrigerant piping 4,5 connect can be readily configured to 10m hereinafter, to as refrigerant used HFO1234yf,
In the case where HFO1234ze, the refrigerant pressure loss of low-pressure side can be also easily reduced.
Fig. 2 is the refrigerating cycle structure chart of air conditioner shown in FIG. 1.2 be heat source machine, and 3 be indoor unit, above-mentioned heat source machine 2
By gas side refrigerant piping (gas side connecting pipings) 4 and hydraulic fluid side refrigerant piping, (liquid side, which connects, matches with indoor unit 3
Pipe) 5 connections.
In above-mentioned heat source machine 2, compressor 20, four-way switching valve 21, heat source side are connected in turn using refrigerant piping
Heat exchanger 22 and expansion device 23.24 be to change it to above-mentioned heat source side for the sucking outdoor air outside fabrication
The air supply device that hot device 22 is blown out.In above-mentioned heat source side heat exchanger 22, make the outdoor air of sucking and the refrigeration in heat exchanger 22
The refrigerant flowed in agent piping carries out heat exchange, thus makes refrigerant condensation (when refrigeration) or evaporation (when heating).
Above-mentioned indoor unit 3 is by utilizing the heat exchanger 30 and the composition of expansion device 31 on the inside of refrigerant piping junction chamber.
32 be the air supply device for blowing out it to above-mentioned indoor heat exchanger 30 for sucking indoor air.It is changed in above-mentioned indoor
In hot device 30, so that the room air of sucking is carried out heat exchange with the refrigerant flowed in the refrigerant piping of heat exchanger 30, make
Refrigerant evaporates (when refrigeration) or condensation (when heating), so as to can to indoor supply cold wind or warm wind and it is empty to indoor progress
Controlled atmosphere section.
In addition, refrigerant leakage detector (refrigerant leak detection mechanism) is provided in machine 3 indoors in the present embodiment
33, if generating refrigerant leakage in machine 3 indoors, the situation can be immediately detected.The refrigerant leakage detector 33
The outside of machine 3 indoors can be set or be provided with the interior of indoor unit 3.
Above-mentioned heat source machine 2 and above-mentioned indoor unit 3 pass through 5 phase of gas side refrigerant piping 4 and hydraulic fluid side refrigerant piping
It connects, in above-mentioned gas side, refrigerant piping 4 is equipped with gas side and prevents valve 25, and sets in aforesaid liquid side refrigerant piping 5
There is hydraulic fluid side to prevent valve 26.In general, above-mentioned prevention valve 25,26 is set to 2 side of heat source machine.
In addition, the flowing of refrigerant when arrow A in above-mentioned heat source machine 2 indicates heating operation, arrow B indicate refrigeration fortune
The flowing of refrigerant when turning.
Next, being illustrated in conjunction with structure of the Fig. 3 to above-mentioned heat source machine 2, but firstly, in order to be compared, in conjunction with Fig. 4
And Fig. 5 is illustrated the structure of previous ceiling flush type heat source machine.
Fig. 4 is the perspective view for illustrating the example of heat source machine of the ceiling flush type as previous air conditioner, and Fig. 5 is to say
The top view of the flowing of air in the heat source machine of bright ceiling flush type shown in Fig. 4.
In Fig. 4,2 are and the comparable previous ceiling flush type heat source of ceiling flush type heat source machine 2 shown in FIG. 1
Machine.2a is cabinet, is divided into the space 2c of upstream side and the space 2d in downstream side by demarcation plate 2b in cabinet 2a.2e is
For importing the air suction inlet of outdoor air (outside air) to above-mentioned upstream side space 2c, 2f is for from above-mentioned downstream side
Space 2d blows out the air blow-off outlet of the air after heat exchange to outside fabrication.
In above-mentioned upstream side space 2c, accommodate for sucking the refrigerant flowed in heat conducting pipe with from above-mentioned air
The outdoor air that mouth 2e is imported carries out the heat exchanger (heat source side heat exchanger) 22 of heat exchange, for by the above-mentioned outdoor air of sucking
And to the above-mentioned heat exchanger 22 supply air supply device 24 of outdoor air, the compressor 20 for being compressed to refrigerant and
For to the liquid storage device 27 etc. accumulated by the excess refrigerant after the equal condensation of above-mentioned heat exchanger 22.In addition, 24a is for driving
Move the motor of above-mentioned air supply device 24.
On the other hand, in above-mentioned downstream side space 2d, electric part box 28 etc. is accommodated, which is accommodated with
Electric components such as control base board, terminal board equipped with electronic component etc..
In addition, as refrigerant, having used R407C, R410A etc. in previous heat source machine 2.Also, in Fig. 4, compressor
20, heat exchanger 22 and liquid storage device 27 are the refrigerating cycle constituent parts that refrigerant is flowed through.In Fig. 4 although not shown, but Fig. 2
Shown such four-way switching valve 21, expansion device 23 are also the refrigerating cycle constituent part that refrigerant is flowed through.
Next, being said in conjunction with Fig. 5 to the flowing of the air in previous ceiling flush type heat source machine shown in Fig. 4
It is bright.In Fig. 5, arrow C is the flowing of the air in the cabinet 2a of heat source machine 2.
In previous ceiling flush type heat source machine 2, the upper of C is flowed in the air formed by above-mentioned air supply device 24
Side is swum, is provided with the refrigerating cycles constituent parts such as above-mentioned compressor 20, above-mentioned heat exchanger 22 and above-mentioned liquid storage device 27, and in sky
The downstream side of the flowing C of gas is provided with above-mentioned air supply device 24, above-mentioned electric part box 28.Therefore, if refrigerant is cold from these
Freeze the leakage of any of repeat factor component, then the refrigerant leaked out is flowed along the flowing C of air.
But global warming potential GWP lesser HFO1234yf, HFO1234ze etc. are being used as refrigerant
In the case where the refrigerants such as refrigerant or the smaller R32 of above-mentioned GWP, since these refrigerants are micro- combustion property, so micro-
Combustion property refrigerant is contacted with the flowing C of air with the motor 24a of above-mentioned air supply device 24, above-mentioned electric part box 28.Due to
It is accommodated with electric component in above-mentioned electric part box 28, so when producing fever, the leakage current of electric component, if in its week
Enclose that there are combustible refrigerants, then known to have the danger of burning.It is also identical for the said motor 24a of air supply device 24.
Therefore, in the present embodiment, the device configuration of the inside of ceiling flush type heat source machine 2 is constituted as shown in Figure 3.Scheming
In ceiling flush type heat source machine shown in 3, for corresponding with Fig. 4, previous ceiling flush type heat source machine shown in fig. 5
Structure indicates that the description of the overlapping parts will be omitted with the same symbol, is only illustrated to different parts.
In the ceiling flush type heat source machine 2 of the present embodiment, if air supply device 24 operates, room shown in hollow arrow 6
The sucking air flowing of outer air flows into cabinet 2a from air suction inlet 2e, and in above-mentioned case as shown in the flowing C of air
Flowing in body 2a, and blow out from air blow-off outlet 2f and be discharged to outside fabrication.
In the present embodiment, refrigerating cycle element that the refrigerants such as compressor 20, heat exchanger 22 and liquid storage device 27 are flowed through
Component is configured at the downstream side space 2d in cabinet 2a, and air supply device 24, electric part box 28 are configured in cabinet 2a
Upstream side space 2c.
By constituting like this, the downstream side in the flowing of air is in due to above-mentioned refrigerating cycle constituent part, it is above-mentioned
The upstream side that the flowing of air is more leaned on than above-mentioned refrigerating cycle constituent part, institute is arranged in electric part box 28, air supply device 24
Even if leakage of refrigerant is not yet in the case where producing refrigerant from any of above-mentioned refrigerating cycle constituent part and leaking
It can be contacted with above-mentioned electric part box 28, air supply device 24, can be allowed to flow out with the flowing C of air to outside fabrication.
Therefore, even if micro- combustion property or flammable refrigerant are leaked from above-mentioned refrigerating cycle constituent part, can also prevent
The only refrigerant and the electric component that can become in the above-mentioned electric part box 28 of incendiary source, the motor of above-mentioned air supply device 24
The electric components such as 24a contact, so as to avoid the danger of burning.
It gives the account in greater detail.In the present embodiment, due to used as it is micro- combustion property refrigerant HFO1234yf,
HFO1234ze etc., and heat source machine is set as ceiling flush type heat source machine, so if generating refrigerant leakage in heat source machine
There is following danger.That is, have the danger that burning is generated in heat source machine, and if refrigerant heat source machine external leakage,
The worry for then having refrigerant to flow out in equal fabrications into ceiling has in building and generates the danger burnt, leakage refrigeration
Agent is in the case where indoor intrusion, there is the indoor danger for becoming anoxic.For such project, in the present embodiment, due to electrical
Spare parts kit 28, air supply device 24 are the structures of the upstream side setting for the flowing that air is more leaned on than refrigerating cycle constituent part, so
Even if in ceiling flush type heat source machine generate refrigerant leakage, can also make leakage of refrigerant not with above-mentioned electric part box
28, air supply device 24 is contacted and is discharged to outside fabrication, to obtain to prevent because generating from ceiling flush type heat source machine
Refrigerant leakage and cause burning, anoxic effect.
In addition, being leaked for the refrigerant generated from indoor unit, since indoor unit has refrigerant leakage detector 33, institute
Can be avoided indoor burning generation and the danger of anoxic can be prevented.That is, in the present embodiment, as shown in Fig. 2, due to
Has refrigerant detector 33 in indoor unit 3, so even if also can in the case that 3 side of machine produces refrigerant leakage indoors
It is enough that the situation is detected by above-mentioned refrigerant detector 33, it sounds an alarm, thus, it is possible to prevent micro- combustion property refrigerant machine indoors
3, interior 1b accumulates and generates burning, anoxic.
Also, although above-mentioned refrigerant detector is expensive, in the present embodiment as relative to from above-mentioned heat source pusher side
The refrigerant of generation leaks and can prevent the structure of burning, anoxic, so not needing that refrigerant leakage is arranged in heat source pusher side
Detector.Therefore, the setting number that can reduce expensive refrigerant detector, can correspondingly obtain cheap air conditioner.
That is, in the present embodiment, since above-mentioned heat source machine 2 is the structure being illustrated in Figure 3, it is possible to not be arranged in 2 side of heat source machine and make
Cryogen detector is able to suppress cost increase and realizes honest and clean so as to reduce the setting number of expensive refrigerant detector
The air conditioner of valence.
In addition, being used as global warming potential GWP smaller since the refrigerant as air conditioner has used in the present embodiment
Refrigerant HFO1234yf, HFO1234ze, so there is the refrigerant pressure loss of the low-pressure side of air conditioner to tend to get bigger
Project.It is also identical for the project, since above-mentioned heat source machine 2 is set as ceiling flush type heat source machine, institute in the present embodiment
The length for the refrigerant piping for connecting indoor unit with heat source machine can be shortened, such as 10m or less can be configured to.Therefore,
The refrigerants such as HFO1234yf, HFO1234ze that density is lower when used as steam and volume becomes larger, and sky can be reduced
The refrigerant pressure loss of the low-pressure side of tune machine, as a result, can get the good air conditioner of efficiency that can also reduce power consumption.
Also, in the present embodiment, the air supply device 24 of the heat source machine 2 of above-mentioned ceiling flush type be configured to air conditioner not
It is also regularly driven when operating.That is, even if in the stopped process of air conditioner, using timer etc. regularly, it is for example every
Day 1 time~repeatedly rotate with respectively carrying out several seconds~a few minutes above-mentioned air supply device 24, and make to produce in the cabinet 2a of heat source machine 2
The flowing C of raw air.It, also can be regularly to construction even if generating refrigerant leakage in the stopped process of air conditioner as a result,
The leakage of refrigerant is discharged in beyond the region of objective existence, and the risk burnt so as to avoid leakage of refrigerant from being gradually accumulated in cabinet 2a increases
Greatly.
In the stopped process of air conditioner, in the case where not as the present embodiment operating regularly air supply device,
If generating refrigerant leakage, the refrigerant of micro- combustion property is detained in heat source machine 2 and its concentration rises, thus risk on fire
Rise.If also, leakage of refrigerant flows and the room where above-mentioned refrigerant to occupant 10 in ceiling etc. from heat source machine 2
Interior 1b (referring to Fig.1) intrusion, then also have and generate indoor burning, the danger of anoxic.
In contrast, in the present embodiment, as noted previously, as regularly being driven in the stopped process in air conditioner
Air supply device 24, so can prevent that leakage of refrigerant is detained in heat source machine 2 and its concentration rises or leakage of refrigerant is to room
Interior 1b intrusion, so as to reliably avoid generating burning, anoxic because of the leakage of micro- combustion property refrigerant.
As described above, the refrigerant of the lesser micro- combustion property of global warming potential GWP is able to use according to the present embodiment,
It can be avoided danger on fire, and the setting number due to can also reduce refrigerant leakage detector simultaneously, so can
It realizes cost effective.Also, since the refrigerant pressure loss of the low-pressure side of air conditioner can also become smaller, so also obtaining can
Obtain the effect of the good air conditioner of efficiency.
In addition, the present invention is not limited to the above embodiments, including various modifications example.For example, in above-described embodiment, with
It uses global warming potential GWP smaller as refrigerant and the example of HFO1234yf, HFO1234ze of micro- combustion property carries out
Explanation, but the R32 of smaller using GWP and micro- combustion property the case where or using property having the same other systems
It can similarly be applied in the case where cryogen, mix refrigerant.Also, ceiling flush type heat source machine is set as to by heat source machine
Situation is illustrated, but heat source machine is not limited to ceiling flush type, even the room for the type being set to outside fabrication
Outer machine can similarly apply technical idea of the invention.
In addition, the above embodiments be for easy understanding the present invention and be illustrated in detail, be not limited to have
Standby illustrated entire infrastructure.
The explanation of symbol
1-building, 1a-ceiling portion (in ceiling), 1b-interior, the heat source machine of 2-ceiling flush types,
2a-cabinet, 2b-demarcation plate, 2c-upstream side space, 2d-downstream side space, 2e-air suction inlet, 2f-air blowout
Mouthful, 3-indoor units, 4-gas side refrigerant pipings, 5-hydraulic fluid side refrigerant pipings, 6-towards heat source machine sucking air
Flowing, the 7-blow out air flowings come out from heat source machine, the sucking air flowing of 8-indoor units, the blowout of 9-indoor units are empty
Flow of air, 10-those presents, 20-compressors, 21-four-way switching valves, the heat exchanger of 22-heat source sides, 23-expansion dresses
It sets, 24-air supply devices, 24a-motor, 25-gas sides prevent valve, and 26-hydraulic fluid sides prevent valve, 27-liquid storage devices, 28-electricity
Gas spare parts kit, the heat exchanger of 30-indoors, the expansion device of 31-indoors, 32-air supply devices, the detection of 33-refrigerants
Device (refrigerant testing agency), refrigerant flowing when A-heating operation, refrigerant flowing when B-refrigeration operation.
Claims (6)
- It the use of global warming potential is 675 or less and weaker than the flammability of the natural refrigerant of hydrocarbon system 1. a kind of air conditioner Micro- combustion refrigerant, and have heat source machine, which accommodates in cabinet changes comprising what above-mentioned refrigerant was flowed through Hot device, compressor refrigerating cycle constituent part, be accommodated with electric component electric part box and by motor drive air-supply Device and constitute, above-mentioned air conditioner is characterized in that,It is configured to form air flowing in above-mentioned cabinet using above-mentioned air supply device, and above-mentioned cabinet is divided into demarcation plate The upstream side space and downstream side space of above-mentioned air flowing,Above-mentioned electric part box and above-mentioned air supply device are configured in the air flowing in above-mentioned upstream side space,The freezing of configuration is flowed through comprising above-mentioned refrigerant in the air flowing in above-mentioned downstream side space heat exchanger, compressor Repeat factor component, so that the electric component of above-mentioned electric part box and the motor comprising above-mentioned air supply device compares above-mentioned sky Above-mentioned refrigerating cycle constituent part in flow of air is configured at upstream side.
- 2. air conditioner according to claim 1, which is characterized in thatThe refrigerant of above-mentioned micro- combustion property is at least any one in HFO1234yf, HFO1234ze, R32.
- 3. air conditioner according to claim 2, which is characterized in thatThe refrigerant of above-mentioned micro- combustion property is at least any one in HFO1234yf or HFO1234ze, and above-mentioned heat source machine is to be set to The ceiling flush type heat that heat exchange is carried out comprising the ceiling portion in ceiling and importing outdoor air in fabrication Source machine.
- 4. air conditioner according to claim 3, which is characterized in thatAbove-mentioned ceiling flush type heat source machine is connect with the indoor unit to indoor carry out air conditioning by refrigerant piping, and And by the length of the above-mentioned refrigerant piping connected between above-mentioned heat source machine and above-mentioned indoor unit be 10m or less.
- 5. air conditioner according to claim 4, which is characterized in thatHas refrigerant leak detection mechanism in above-mentioned indoor unit or the interior for being provided with the indoor unit.
- 6. air conditioner according to any one of claims 1 to 5, which is characterized in thatEven if also regularly driving the air supply device of above-mentioned heat source machine in air conditioner stopped process.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-034164 | 2014-02-25 | ||
| JP2014034164A JP6177158B2 (en) | 2014-02-25 | 2014-02-25 | Air conditioner |
| PCT/JP2014/078436 WO2015129099A1 (en) | 2014-02-25 | 2014-10-27 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106133452A CN106133452A (en) | 2016-11-16 |
| CN106133452B true CN106133452B (en) | 2019-11-05 |
Family
ID=54008444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480074164.7A Active CN106133452B (en) | 2014-02-25 | 2014-10-27 | Air conditioner |
Country Status (5)
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| US (1) | US20160348927A1 (en) |
| EP (1) | EP3112768B1 (en) |
| JP (1) | JP6177158B2 (en) |
| CN (1) | CN106133452B (en) |
| WO (1) | WO2015129099A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109154447B (en) * | 2016-05-12 | 2021-10-29 | 三菱电机株式会社 | Outdoor unit of air conditioner |
| WO2019016959A1 (en) * | 2017-07-21 | 2019-01-24 | 三菱電機株式会社 | Air conditioner |
| US11060746B2 (en) * | 2017-12-01 | 2021-07-13 | Johnson Controls Technology Company | Systems and methods for detecting and responding to refrigerant leaks in heating, ventilating, and air conditioning systems |
| CN109405096B (en) * | 2018-09-17 | 2021-04-20 | 青岛海尔空调器有限总公司 | Air conditioner outdoor unit and control method thereof |
| EP3910258A4 (en) * | 2019-01-09 | 2022-01-19 | Mitsubishi Electric Corporation | Air-conditioning apparatus |
| US11686491B2 (en) | 2019-02-20 | 2023-06-27 | Johnson Controls Tyco IP Holdings LLP | Systems for refrigerant leak detection and management |
| US11162705B2 (en) | 2019-08-29 | 2021-11-02 | Hitachi-Johnson Controls Air Conditioning, Inc | Refrigeration cycle control |
| KR20220010865A (en) * | 2020-07-20 | 2022-01-27 | 엘지전자 주식회사 | Heat pump |
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- 2014-10-27 US US15/117,240 patent/US20160348927A1/en not_active Abandoned
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2015129099A1 (en) | 2015-09-03 |
| EP3112768A1 (en) | 2017-01-04 |
| JP6177158B2 (en) | 2017-08-09 |
| CN106133452A (en) | 2016-11-16 |
| US20160348927A1 (en) | 2016-12-01 |
| JP2015158338A (en) | 2015-09-03 |
| EP3112768B1 (en) | 2020-06-17 |
| EP3112768A4 (en) | 2017-10-18 |
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Effective date of registration: 20180601 Address after: Tokyo, Japan, Japan Applicant after: Hitachi Johnson Controls Air Conditioning Co., Ltd. Address before: Hongkong, China Applicant before: Johnson Controls Hitachi air conditioning technology (Hongkong) Co., Ltd. |
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