CN110234934A - Indoor unit - Google Patents
Indoor unit Download PDFInfo
- Publication number
- CN110234934A CN110234934A CN201780084123.XA CN201780084123A CN110234934A CN 110234934 A CN110234934 A CN 110234934A CN 201780084123 A CN201780084123 A CN 201780084123A CN 110234934 A CN110234934 A CN 110234934A
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- China
- Prior art keywords
- refrigerant
- indoor unit
- pipe
- refrigerating plant
- indoor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003507 refrigerant Substances 0.000 claims abstract description 150
- 239000007788 liquid Substances 0.000 claims description 54
- 239000002826 coolant Substances 0.000 claims description 9
- 239000000470 constituent Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 description 13
- 238000004378 air conditioning Methods 0.000 description 6
- 238000005057 refrigeration Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0068—Indoor units, e.g. fan coil units characterised by the arrangement of refrigerant piping outside the heat exchanger within the unit casing
-
- 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
-
- 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
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
-
- 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
- F25B1/00—Compression machines, plants or systems with non-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
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/385—Dispositions with two or more expansion means arranged in parallel on a refrigerant line leading to the same evaporator
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/39—Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
-
- 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
- F25B2313/006—Compression machines, plants or systems with reversible cycle not otherwise provided for two pipes connecting the outdoor side to the indoor side with multiple indoor units
-
- 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
- F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
-
- 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
- F25B2500/01—Geometry problems, e.g. for reducing size
-
- 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Other Air-Conditioning Systems (AREA)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
Abstract
Indoor unit (3) has heat exchanger (22) and multiple refrigerant pipes (31,32).Indoor unit (3) can constitute the refrigerating plant (1) with refrigerant circuit (6).The refrigerant of enclosed refrigerant circuit (6) is R32.The pipe outside diameter of at least one refrigerant pipe among multiple refrigerant pipes (31,32) is (Do-1)/8 inch.Here, Do/8 inches are pipe outside diameters in the case that the refrigerant of enclosed refrigerant circuit (6) is set as R410A.
Description
Technical field
The present invention relates to a kind of indoor units.
Background technique
Refrigerant circuit possessed by the refrigerating plants such as air-conditioning device is in such a way that indoor unit is connect with outdoor unit
It constitutes.The refrigerant circuit for the refrigerating plant that can be obtained currently on the market uses R410A refrigerant mostly.On the other hand, from
From the viewpoint of inhibiting global warming, in recent years, also freezed using global warming coefficient (GWP) than R410A in refrigerating plant
The small R32 refrigerant of agent.
Patent document 1 (No. 5536817 bulletins of Japanese Patent Laid) discloses the air-conditioning device using R32 refrigerant.?
In the air-conditioning device, the pipe outside diameter for connecting the cold-producing medium communicating pipe of indoor unit and outdoor unit is set to than in refrigerant circuit
Pipe outside diameter in the case where enclosed R410A refrigerant is small.The purpose is to reduce the refrigeration dose of enclosed refrigerant circuit or subtract
The usage amount of few piping material.
Summary of the invention
The technical problems to be solved by the invention
However, in recent years, for refrigerating plants such as air-conditioning devices, not requiring nothing more than and reducing refrigerant enclosed volume and materials'use
Amount, but also require to reduce by the size of equipment to reduce installation space.The requirement also relates to indoor unit.
Typically, indoor unit has the components such as the expansion valve in heat exchanger and necessary situation.In addition, indoor single
Member has the refrigerant pipe connecting with above-mentioned component.As long as refrigerant pipe has the pipe outside diameter of degree as in the past, indoor
The size of unit, which reduces, has limitation.
Technical problem of the invention is to realize that the size of the indoor unit with refrigerant pipe reduces.
Solve technological means used in technical problem
The indoor unit of first viewpoint of the invention has heat exchanger and multiple refrigerant pipes.Indoor unit can constitute tool
There is the refrigerating plant of refrigerant circuit.The refrigerant of enclosed refrigerant circuit is R32.At least one among multiple refrigerant pipes
The pipe outside diameter of refrigerant pipe is (Do-1)/8 inch.Here, " Do/8 inches " are to be set as the refrigerant of enclosed refrigerant circuit
Pipe outside diameter in the case where R410A.
According to above structure, the outer diameter ratio of refrigerant R32, and at least one refrigerant pipe uses R410A as system
The outer diameter of the case where cryogen is small.Therefore, the size of indoor unit can be made to reduce, so as to reduce installation space.
The indoor unit of second viewpoint of the invention has heat exchanger and multiple refrigerant pipes.Indoor unit can constitute tool
There is the refrigerating plant of refrigerant circuit.The refrigerant of enclosed refrigerant circuit is R32.At least one among multiple refrigerant pipes
The pipe outside diameter of refrigerant pipe is 2/8 inch or less.The rated capacity of refrigerating plant is 7.1kW or more.
According to above structure, refrigerant R32, and the outer diameter of at least one refrigerant pipe are 2/8 inch or less.Make
Use R410A as in the case where refrigerant, it is difficult to which the case where outer diameter of refrigerant pipe is decreased to above-mentioned level is more.Therefore,
The size of indoor unit can be made to reduce, so as to reduce installation space.
On the basis of the indoor unit described in the first viewpoint or the second viewpoint, in the indoor unit of third viewpoint of the present invention
In, multiple refrigerant pipes include liquid refrigerant pipe and gaseous state refrigerant pipe.Pipe outside diameter described in first viewpoint or the second viewpoint
For the pipe outside diameter of liquid refrigerant pipe.
Outer diameter according to above structure, at least liquid refrigerant pipe is smaller.Therefore, the small-sized of liquid refrigeration pipe can be passed through
Change and reduces the size of indoor unit.
On the basis of the indoor unit described in third viewpoint, in the indoor unit of the 4th viewpoint of the invention, heat exchange
Device has coolant flow divider.Liquid refrigerant pipe is connect with coolant flow divider.
According to above structure, the coolant flow divider of liquid refrigerant pipe and heat exchanger is connected.Therefore, for with system
For the liquid refrigerant pipe that the mode of cryogen current divider connection designs, the size of indoor unit can be made by reducing outer diameter
Reduce.
On the basis of the first viewpoint indoor unit described in any viewpoint into the 4th viewpoint, in the 5th viewpoint of the invention
Indoor unit in, the rated capacity of refrigerating plant is in the range of 7.1kW to 16.0kW.
According to above structure, the rated capacity of the refrigerating plant constituted using indoor unit is in 7.1kW to 16.0kW's
In range.Therefore, for it is empty that setting can be reduced with biggish rated power and for being easy the refrigerating plant of enlargement
Between.In addition, " rated capacity " described herein is recorded as in the catalogue of refrigerating plant or operation instructions " nominally sometimes
Ability ".
The refrigerating plant of 6th viewpoint of the invention has the refrigerant circuit that refrigerating cycle is realized by refrigerant flowing.
Refrigerating plant includes indoor unit, outdoor unit, connection piping.Indoor unit is the first viewpoint any viewpoint into the 5th viewpoint
The indoor unit.Indoor unit is connect by connection piping with outdoor unit.
According to above structure, at least one refrigerant pipe of the indoor unit of refrigerating plant has lesser pipe outside diameter.Cause
This, can be such that the size of refrigerating plant reduces, so as to reduce installation space.
Invention effect
Indoor unit described in first viewpoint to the 5th viewpoint according to the present invention, since the size of indoor unit reduces, because
This, can reduce installation space.
Refrigerating plant described in 6th viewpoint according to the present invention, since the size of refrigerating plant reduces, can reduce
Installation space.
Detailed description of the invention
Fig. 1 is the schematic diagram with the refrigerating plant 1 of indoor unit 3 of an embodiment of the present invention.
Fig. 2 is the top view for indicating the internal structure of indoor unit 3.
Fig. 3 is the side view for indicating the internal structure of indoor unit 3.
Fig. 4 is the top view of the liquid refrigerant pipe 31 of indoor unit 3.
Fig. 5 is the side view of the liquid refrigerant pipe 31 of indoor unit 3.
Fig. 6 is the schematic diagram with the refrigerating plant 1 of the indoor unit 3 of the first variation of embodiment of Fig. 1.
Fig. 7 is the schematic diagram with the refrigerating plant 1 of the indoor unit 3 of the second variation of embodiment of Fig. 1.
Specific embodiment
Hereinafter, being based on attached drawing, the embodiment and its variation of outdoor unit of the invention are illustrated.In addition, this
The specific structure of the outdoor unit of invention is not limited to following embodiments and its variation, can be in the model for not departing from inventive concept
It is changed in enclosing.
(1) overall structure of refrigerating plant 1
Fig. 1 shows the refrigerating plant 1 of the indoor unit 3 with an embodiment of the present invention.Refrigerating plant 1 is configured to empty
Device is adjusted, the indoor refrigeration and heating of building etc. can be carried out by carrying out the refrigerating cycle of steam compression type.It is cold
Freezing device 1, there is outdoor unit 2, indoor unit 3, the liquid refrigerant for connecting above-mentioned outdoor unit 2 with indoor unit 3 to be connected to
Pipe 4 and gaseous state cold-producing medium communicating pipe 5.Outdoor unit 2, indoor unit 3, liquid refrigerant communicating pipe 4 are connected to gaseous refrigerant
The refrigerant circuit 6 of the composition steam compression type of pipe 5.R32 is sealed in refrigerant circuit 6 using as refrigerant.
The rated capacity of refrigerating plant 1 is in the range of 7.1kW to 16.0kW." rated capacity " described herein refer to
The equal value of " nominal capacity " recorded in the catalogue or operation instructions of outdoor unit 2.
(2) structure of each section of refrigerating plant 1
(2-1) outdoor unit 2
Outdoor unit 2 is set to outdoor.Outdoor unit 2 has low pressure storage tank 7, compressor 8, four-way switching valve 9, outdoor heat
Exchanger 10, expansion valve 11, hydraulic fluid side stop valve 12, gas side stop valve 13 and outdoor fan 14.Compressor 8 is by compressor
Main body 8a and attached storage tank 8b is constituted.Outdoor unit 2 also has the refrigerant pipe 15~21 of connection between the parts.
The structure of outdoor unit 2 listed herewith only as an example of, can be using other structures and component substitution.
(2-2) indoor unit 3
Indoor unit 3 is set to interior.Indoor unit 3 has indoor heat exchanger 22, indoor fan 24, liquid refrigerant
Pipe 31, gaseous refrigerant pipe 32.Indoor heat exchanger 22 includes coolant flow divider 25.Liquid refrigerant pipe 31 hands over Indoor Thermal
The coolant flow divider 25 of parallel operation 22 is connect with liquid refrigerant communicating pipe 4.Herein, liquid refrigerant pipe 31 and liquid refrigerant
It can be fission communicating pipe 4, be also possible to integrated.Gaseous refrigerant pipe 32 is by indoor heat exchanger 22 and gaseous refrigerant
Communicating pipe 5 connects.Herein, gaseous refrigerant pipe 32 can be seperated with gaseous refrigerant communicating pipe 5, be also possible to one
's.
(2-3) liquid refrigerant communicating pipe 4 and gaseous state cold-producing medium communicating pipe 5
Liquid refrigerant communicating pipe 4 and gaseous state cold-producing medium communicating pipe 5 are to work as to set the refrigerating plant 1 for being configured to air-conditioning device
The piping constructed at the scene when being placed in the setting place such as building.One end of liquid refrigerant communicating pipe 4 and outdoor unit 2
Hydraulic fluid side stop valve 12 connect.The liquid of the indoor heat exchanger 22 of the other end and indoor unit 3 of liquid refrigerant communicating pipe 4
Side end is directly connected to, or is indirectly connected with via the liquid refrigerant pipe 31 seperated with the liquid refrigerant communicating pipe 4.Gaseous state
One end of cold-producing medium communicating pipe 5 is connect with the gas side stop valve 13 of outdoor unit 2.The other end of gaseous refrigerant communicating pipe 5
It is directly connected to the gas side of the indoor heat exchanger 22 of indoor unit 3, or divides via with the gaseous refrigerant communicating pipe 5
The gaseous refrigerant pipe 32 of body is indirectly connected with.
(3) movement of refrigerating plant 1
Refrigerating plant 1 make in refrigeration refrigerant with outdoor unit 2, liquid refrigerant communicating pipe 4, indoor unit 3,
The refrigerating cycle of the sequence circulation of gaseous refrigerant communicating pipe 5.At this point, indoor heat exchanger 22 is used as from room air extract heat
The heat dump of amount works.
In addition, refrigerating plant 1 carries out making refrigerant with outdoor unit 2, gaseous refrigerant communicating pipe 5, interior in heating
The refrigerating cycle of unit 3, the sequence of liquid refrigerant communicating pipe 4 circulation.At this point, indoor heat exchanger 22 is used as to room air
The radiator of release heat works.
(4) detailed construction of indoor unit 3
For indoor unit 3, it is desirable that reduce the space for the indoor unit 3 to be arranged.Rated capacity
Bigger refrigerating plant 1, the size of indoor unit 3 are often also bigger.In order to reduce the installation space of indoor unit 3, room is needed
The size of the components such as inside heat exchanger 22 reduces, and is also required to the refrigerants such as liquid refrigerant pipe 31, gaseous refrigerant pipe 32
The size of pipe reduces.
Therefore, herein, the refrigerant of enclosed refrigerant circuit 6 is set as R32, and by the liquid in refrigerant pipe 31,32
The pipe outside diameter of state refrigerant pipe 31 is set as than the refrigerant of enclosed refrigerant circuit 6 is set as R410A and is used for same nominal energy
The pipe outside diameter of the liquid refrigerant pipe 31 of the outdoor unit of the refrigerating plant of power is small.
As previously mentioned, the rated capacity of the refrigerating plant 1 of present embodiment is in the range of 7.1kW to 16.0kW.Having
There is the rated capacity of the rank and refrigerant uses in the indoor unit of existing refrigerating plant of R410A, liquid refrigerant pipe
Pipe outside diameter be, for example, 3/8 inch, the pipe outside diameter of gaseous refrigerant pipe is, for example, 5/8 inch.Herein, by it is above-mentioned collectively referred to as "
Using in the indoor unit of R410A, pipe outside diameter is ' Do/8 inches ' ".
In contrast, in the indoor unit 3 of refrigerating plant 1, it is set at least one of internal refrigerant pipe
The pipe outside diameter of refrigerant pipe is set as (Do-1)/8 inch, that is, is set as the small size of indoor unit than use R410A.Example
Such as, the liquid refrigerant pipe 31 of indoor unit 3 is to be made in a manner of 2/8 inch below by its pipe outside diameter.As a result, herein, can
Reduce the caliber of liquid refrigerant pipe 31, to facilitate the installation space of reduction indoor unit 3.
Fig. 2 and Fig. 3 show the internal structures of indoor unit 3.The refrigerant of liquid refrigerant pipe 31 and heat exchanger 22
Current divider 25 connects.Gaseous refrigerant pipe 32 is connect with the end without coolant flow divider 25 of heat exchanger 22.Such as Fig. 4
With shown in Fig. 5, liquid refrigerant pipe 31 has curved position, that is, curved tube portion B1 and curved tube portion B2.The shape of liquid refrigerant pipe 31
Shape is without being limited thereto.For example, liquid refrigerant pipe 31 can also only have a curved tube portion.Alternatively, liquid refrigeration pipe 31 can also have
Three or more curved tube portions.
In the case where the pipe outside diameter for the refrigerant pipe that will have at least one curved tube portion reduces, before pipe outside diameter is reduced
It compares, the bending radius in curved tube portion can be reduced.By the diminution effect of above-mentioned bending radius, the space that refrigerant pipe is occupied
It is further reduced.Therefore, it is contemplated that the liquid refrigerant pipe 31 of present embodiment reduces also at curved tube portion B1 and curved tube portion B2
Bending radius, thus, the reduction effect of the installation space of indoor unit 3 is larger.
(5) feature
(5-1)
The case where refrigerant is R32, and the outer diameter of at least liquid refrigerant pipe 31 is than R410A is used as refrigerant is small
2/8 inch or less.Therefore, the size of indoor unit 3 can be made to reduce, so as to reduce installation space.
(5-2)
Liquid refrigerant pipe 31 is connect with the coolant flow divider 25 of heat exchanger 22.Therefore, for divide with refrigerant
For the liquid refrigerant pipe 31 that the mode that stream device 25 connects designs, the size of indoor unit 3 can be made by reducing outer diameter
Reduce.
(5-3)
The rated capacity of the refrigerating plant 1 constituted using indoor unit 3 is in the range of 7.1kW to 16.0kW.Therefore,
For the refrigerating plant 1 of the rated capacity with above range, installation space can be reduced.
(5-4)
Due to including above-mentioned indoor unit 3, the whole installation space of refrigerating plant 1 can also be reduced.
(6) variation
(6-1) first variation
It in the above-described embodiment, does not include expansion valve in the component for constituting refrigerant circuit 6 indoors in unit 3.
Alternatively, as shown in fig. 6, indoor unit 3 may include indoor expansion valve 23.Indoor expansion valve 23 is set to liquid refrigerant pipe
31.Therefore, liquid refrigerant pipe 31 is divided into the first liquid line 33 and second liquid pipe 34 by indoor expansion valve 23.First liquid
Body pipe 33 is connect with heat exchanger 22 and indoor expansion valve 23.Second liquid pipe 34 and indoor expansion valve 23 and liquid refrigerant connect
Siphunculus 4 connects.Second liquid pipe 34 can be seperated with liquid refrigerant communicating pipe 4, be also possible to integrated.
The pipe outside diameter of at least one refrigerant pipe is set as (Do-1)/8 inch in refrigerant pipe 32,33,34, and makes
At a pipe outside diameter, that is, Do/8 inches small size for the indoor unit than the refrigerating plant using R410 refrigerant.For example, first
The pipe outside diameter of liquid line 33 is decreased to 2/8 inch from 3/8 inch identically as above embodiment.Thereby, it is possible to reduce to have
The installation space of the indoor unit 3 of indoor expansion valve 23.
(6-2) second variation
In the above-described embodiment, refrigerating plant 1 is the refrigerating plant of so-called one-to-one formula, that is, an outdoor unit 2
It is connected with an indoor unit 3.Alternatively, can also be as shown in Figure 7, it is outdoor single by more indoor units 3 and one
Member 2 connects and constitutes the refrigerating plant 1 of multiple.But, indoor fan 24 is omitted in figure.Alternatively, each indoor unit 3
It can be the product of the indoor expansion valve 23 with first variation.Thereby, it is possible to subtract the size of the refrigerating plant 1 of multiple
It is small.
(6-3) third variation
In the above-described embodiment, refrigerating plant 1 is configured to air-conditioning device.Alternatively, refrigerating plant 1 also may be configured as
Refrigerator, hot water apparatus etc. utilize any other equipment of refrigerating cycle.Thereby, it is possible to make the ruler of the refrigerating plant other than air conditioner
Very little reduction.
Symbol description
1 refrigerating plant；
2 outdoor units；
3 indoor units；
4 liquid refrigerant communicating pipes；
5 gaseous refrigerant communicating pipes；
6 refrigerant circuits；
22 indoor heat exchangers；
23 indoor expansion valves；
31~34 refrigerant pipes.
Existing technical literature
Patent document
Patent document 1: No. 5536817 bulletins of Japanese Patent Laid.
Claims (6)
1. a kind of indoor unit (3), the indoor unit (3) has heat exchanger (22) and multiple refrigerant pipes (31~34),
The indoor unit is capable of forming as the constituent element of the refrigerating plant (1) with refrigerant circuit (6), which is characterized in that
The refrigerant for enclosing the refrigerant circuit is set as R32,
The pipe outside diameter of at least one refrigerant pipe among multiple refrigerant pipes is set as (Do-1)/8 inch, here, Do/
8 inches are pipe outside diameters in the case that the refrigerant for enclosing the refrigerant circuit is set as R410A.
2. a kind of indoor unit (3), the indoor unit (3) has heat exchanger (22) and multiple refrigerant pipes (31~34),
The indoor unit can constitute the refrigerating plant (1) with refrigerant circuit (6), which is characterized in that
The refrigerant for enclosing the refrigerant circuit is set as R32,
By the pipe outside diameter of at least one refrigerant pipe among multiple refrigerant pipes be set as 2/8 inch hereinafter,
The rated capacity of the refrigerating plant is 7.1kW or more.
3. indoor unit as claimed in claim 1 or 2, which is characterized in that
Multiple refrigerant pipes include:
Liquid refrigerant pipe (31)；And
Gaseous refrigerant pipe (32),
The pipe outside diameter is the pipe outside diameter of the liquid refrigerant pipe.
4. indoor unit as claimed in claim 3, which is characterized in that
The heat exchanger has coolant flow divider (25),
The liquid refrigerant pipe is connect with the coolant flow divider.
5. indoor unit according to any one of claims 1 to 4, which is characterized in that
The rated capacity of the refrigerating plant is in the range of 7.1kW to 16.0kW.
6. a kind of refrigerating plant (1), the refrigerating plant (1) has the refrigerant that refrigerating cycle is realized by refrigerant flowing
Circuit (6), which is characterized in that the refrigerating plant includes: at least one interior as described in any one of claims 1 to 5
Unit (3)；Outdoor unit (2)；And
The connection piping (4,5) that the indoor unit is connect with the outdoor unit.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017008436A JP2018115831A (en) | 2017-01-20 | 2017-01-20 | Indoor unit |
| JP2017-008436 | 2017-01-20 | ||
| PCT/JP2017/046194 WO2018135238A1 (en) | 2017-01-20 | 2017-12-22 | Indoor unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110234934A true CN110234934A (en) | 2019-09-13 |
Family
ID=62908481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780084123.XA Pending CN110234934A (en) | 2017-01-20 | 2017-12-22 | Indoor unit |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20190383522A1 (en) |
| EP (1) | EP3572734A4 (en) |
| JP (1) | JP2018115831A (en) |
| CN (1) | CN110234934A (en) |
| WO (1) | WO2018135238A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6721546B2 (en) * | 2017-07-21 | 2020-07-15 | ダイキン工業株式会社 | Refrigeration equipment |
| EP3889512A1 (en) * | 2017-09-29 | 2021-10-06 | Daikin Industries, Ltd. | Air conditioning system |
| JP6925455B2 (en) * | 2018-02-07 | 2021-08-25 | 三菱電機株式会社 | Air conditioning system and air conditioning control method |
| JP2020201011A (en) * | 2019-06-12 | 2020-12-17 | ダイキン工業株式会社 | air conditioner |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1163710A (en) * | 1997-08-08 | 1999-03-05 | Toshiba Corp | Air conditioner |
| CN1425122A (en) * | 2000-04-19 | 2003-06-18 | 大金工业株式会社 | Refrigerator |
| CN1441203A (en) * | 2002-02-28 | 2003-09-10 | 东芝开利株式会社 | Air conditioner |
| JP2008196762A (en) * | 2007-02-13 | 2008-08-28 | Daikin Ind Ltd | Flow divider, heat exchanger unit and refrigerating device |
| CN103791604A (en) * | 2012-10-31 | 2014-05-14 | 大金工业株式会社 | Air heat exchanger |
| CN104094069A (en) * | 2012-03-26 | 2014-10-08 | 日立空调·家用电器株式会社 | Refrigerating cycle device |
| CN105143786A (en) * | 2013-03-27 | 2015-12-09 | 日立空调·家用电器株式会社 | Air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5362028A (en) | 1976-11-15 | 1978-06-03 | Nissan Diesel Motor Co Ltd | Controlling method and apparatus for cylinder-reducing operation indiesel engine |
| JP2001248941A (en) * | 1999-12-28 | 2001-09-14 | Daikin Ind Ltd | Refrigeration unit |
| JP4449153B2 (en) * | 2000-04-14 | 2010-04-14 | ダイキン工業株式会社 | Outdoor heat exchanger, indoor heat exchanger, and air conditioner |
| JP4848576B2 (en) * | 2000-04-19 | 2011-12-28 | ダイキン工業株式会社 | Refrigeration equipment |
| JP5409544B2 (en) * | 2010-08-04 | 2014-02-05 | 三菱電機株式会社 | Air conditioner indoor unit and air conditioner |
| JP6400378B2 (en) * | 2014-08-07 | 2018-10-03 | 東芝ライフスタイル株式会社 | Air conditioner |
-
2017
- 2017-01-20 JP JP2017008436A patent/JP2018115831A/en active Pending
- 2017-12-22 CN CN201780084123.XA patent/CN110234934A/en active Pending
- 2017-12-22 EP EP17893310.7A patent/EP3572734A4/en active Pending
- 2017-12-22 WO PCT/JP2017/046194 patent/WO2018135238A1/en unknown
- 2017-12-22 US US16/479,284 patent/US20190383522A1/en not_active Abandoned
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|---|---|---|---|---|
| JPH1163710A (en) * | 1997-08-08 | 1999-03-05 | Toshiba Corp | Air conditioner |
| CN1425122A (en) * | 2000-04-19 | 2003-06-18 | 大金工业株式会社 | Refrigerator |
| CN1441203A (en) * | 2002-02-28 | 2003-09-10 | 东芝开利株式会社 | Air conditioner |
| JP2008196762A (en) * | 2007-02-13 | 2008-08-28 | Daikin Ind Ltd | Flow divider, heat exchanger unit and refrigerating device |
| CN104094069A (en) * | 2012-03-26 | 2014-10-08 | 日立空调·家用电器株式会社 | Refrigerating cycle device |
| CN103791604A (en) * | 2012-10-31 | 2014-05-14 | 大金工业株式会社 | Air heat exchanger |
| CN105143786A (en) * | 2013-03-27 | 2015-12-09 | 日立空调·家用电器株式会社 | Air conditioner |
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| 杜天保，黄省三: "《空调器安装与维修》", 31 March 2008 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018135238A1 (en) | 2018-07-26 |
| EP3572734A1 (en) | 2019-11-27 |
| US20190383522A1 (en) | 2019-12-19 |
| JP2018115831A (en) | 2018-07-26 |
| EP3572734A4 (en) | 2020-10-14 |
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Application publication date: 20190913 |