CN102893095B - Switching device shifter and aircondition - Google Patents
Switching device shifter and aircondition Download PDFInfo
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- CN102893095B CN102893095B CN201080066716.1A CN201080066716A CN102893095B CN 102893095 B CN102893095 B CN 102893095B CN 201080066716 A CN201080066716 A CN 201080066716A CN 102893095 B CN102893095 B CN 102893095B
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- indoor set
- valve
- cut
- cold
- producing medium
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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
- F24F1/26—Refrigerant piping
- F24F1/32—Refrigerant piping for connecting the separate outdoor units to indoor units
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
- F25B41/42—Arrangements for diverging or converging flows, e.g. branch lines or junctions
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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
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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
- 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
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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
- 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
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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
- F25B2500/00—Problems to be solved
- F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
- F25B2500/221—Preventing leaks from developing
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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
- 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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- 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
- F25B2600/2519—On-off valves
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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)
Abstract
Obtain in the aircondition with multiple indoor set, such as also can carry out blocking of cold-producing medium etc. expeditiously, easily carry out safeguarding, design and manufacture and the switching device shifter etc. of low cost.At many pipe arrangements (6,7) etc. for making cold-producing medium circulate between heat source machine (A) and multiple indoor set (C ~ E), be formed with the multiple cut-off valves (10,11) for making the flowing of cold-producing medium stop respectively in groups, the group of the cut-off valve of the quantity corresponding with the quantity of indoor set (10c ~ 10e, 11c ~ 11e) venue is formed.
Description
Technical field
The present invention relates to for the cold-producing medium through pipe arrangement by, block the switching device shifter switched and the aircondition utilizing freeze cycle.The switching device shifter etc. of cold-producing medium is blocked when more specifically relating to refrigrant leakage in aircondition.
Background technology
In aircondition (freezing cycle device), such as, utilize refrigerant piping to connect compressor, cross valve, outdoor pusher side heat exchanger, expansion valve and indoor pusher side heat exchanger successively, form the refrigerant loop (freeze cycle) making refrigerant circulation.Further, when cold-producing medium evaporation, condensation, utilize the air etc. as heat exchange object is carried out heat absorption, heat radiation, one side makes the pressure of the cold-producing medium in pipe change, and one side carries out operation of air conditioner, cooling running etc.
Usually, in such aircondition, in the equipment (mechanism), pipe arrangement of formation refrigerant loop, make it circulate cryogen containment, but due to some reason such as loose contact, long-term ageing, cold-producing medium leak sometimes to loop-external.Once refrigrant leakage just can not carry out desired air adjustment and.In addition, sometimes also can ignite, health aspect is also undesirable.Therefore, have following aircondition, it is provided with cold-producing medium inflow and outflow side for detecting cold-producing medium the refrigrant leakage sensor that externally leaks of side heat exchanger side and the indoor side heat exchanger on refrigerant loop indoor for blocking a pair magnetic valve of the flowing of cold-producing medium respectively.Further, refrigerant-recovery mechanism, once the leakage of cold-producing medium be detected by refrigrant leakage sensor, just makes device carry out cooling operation.Now, first, the switch valve being positioned at (being also gas-liquid two-phase cold-producing medium sometimes) side that liquid cold-producing medium (liquid refrigerant) flows is closed.Then, after have passed through the stipulated time, close another switch valve being positioned at (being also gas-liquid two-phase cold-producing medium sometimes) side that gasiform cold-producing medium (gas refrigerant) flows, carry out above-mentioned process (such as referenced patent document 1).
At first technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 6-180166 publication
Summary of the invention
Invent problem to be solved
Such as in the aircondition described in patent document 1, form the switch valve independently structure made before and after pusher side heat exchanger disposed in the interior.Therefore, such as, when the structure of the multiple indoor set of the parallel connection that multisystem is such, if each indoor set arranges switch valve, then not only disperse and cause maximization, cost increases, and also hampers maintainability.Especially, when cold-producing medium being detected machine leaking indoor, make indoor set reinstatement as early as possible can spended time.
In addition, do not arrange between each switch valve and indoor set carry out air-tightness confirmation, vacuumize, cold-producing medium adds etc. mechanism.Therefore, when the multiple indoor set of the connection that multisystem is such, such as, each indoor set can not be made to restore to the original state.Therefore, whole system must be stopped.The running with air harmonic correlation can not be carried out during this period.
The present invention is formed to solve above-mentioned existing problem, object obtains following switching device shifter etc., even if it also can carry out blocking of cold-producing medium expeditiously in the aircondition such as with multiple indoor set, easily carry out safeguarding, Design and manufacture and low cost.
For solving the means of problem
Switching device shifter of the present invention is following structure, that is: on the multiple pipe arrangements making cold-producing medium circulate between heat source machine and multiple indoor set, be formed with the multiple cut-off valves for making the flowing of cold-producing medium stop respectively in groups, make the group set of the cut-off valve of the quantity corresponding with the quantity of indoor set, form switching device shifter thus.
The effect of invention
According to the present invention, by integrated in groups for the cut-off valve corresponding with the multiple pipe arrangements connecting heat source machine and indoor set, in addition, according to the quantity of indoor set, multiple groups gathered and be integrally formed, thus can obtain small-sized switching device shifter.Further, can low cost of manufacture be obtained and can seek cost reduce switching device shifter.In addition, owing to being integrally formed row set of going forward side by side, therefore easily connect each indoor set and each group of cut-off valve.Further, maintainability (maintenance) can be improved.
Accompanying drawing explanation
Fig. 1 is the figure of the switching device shifter B representing the first embodiment of the present invention.
Fig. 2 is the figure in the cross section representing switching device shifter B.
Fig. 3 is the figure representing the aircondition with switching device shifter B.
Fig. 4 is the figure of flow of refrigerant when representing cooling operation.
Fig. 5 is the figure of the flow of refrigerant represented when heating running.
Fig. 6 is the figure in the cross section of the switching device shifter B representing the second embodiment of the present invention.
Fig. 7 is the figure of the formation of the refrigrant leakage surveillance representing the 4th embodiment of the present invention.
Fig. 8 is the figure representing the flow process that the refrigrant leakage of the 4th embodiment monitors.
Detailed description of the invention
Be described with regard to embodiments of the present invention below with reference to accompanying drawing.In the various figures, identical or equivalent mechanism etc. use identical Reference numeral, in key diagram during mechanism etc., if be illustrated in other figure, then suitably omit in the figure or simplified illustration.In addition, about mechanism etc. without the need under difference especially or specific situation, sometimes also omit and record with subscripting.
First embodiment
Fig. 1 represents being formed integrally and the figure of the switching device shifter B gathered together by multiple cut-off valve of the first embodiment of the present invention.Fig. 1 (a), Fig. 1 (b) are the figure seeing switching device shifter B respectively from different directions.At this, Fig. 1 represents the state of having dismantled as the solenoid (not shown) of the actuator being made cut-off valve 10,11 opening and closing by electromagnetic force.
As shown in Figure 1, switching device shifter B is by be integrally formed cut-off valve 10 and cut-off valve 11 in groups and to gather many groups and form.Form the structure being combined with three groups of cut-off valve 10c ~ 10e and cut-off valve 11c ~ 11e in FIG.Cut-off valve 10 carries out carrying out between the pipe arrangement that flows pipe arrangement connection at the cold-producing medium of gas shape (also comprising the situation of gas-liquid two-phase, identical below) controls, and cold-producing medium is passed through or stops.In addition, cut-off valve 11 carries out carrying out between the pipe arrangement that flows pipe arrangement connection at the cold-producing medium of liquid (also comprising the situation of gas-liquid two-phase, identical below) controls, and cold-producing medium is passed through or stops.Structure etc. about cut-off valve 10 and cut-off valve 11 will be described hereinafter.
Pipe arrangement 6B, pipe arrangement 7B are the pipe arrangements for being connected with the first connecting pipings 6, second connecting pipings 7 described later respectively.Pipe arrangement 6c ~ 6e is pipe arrangement one end being connected with cut-off valve 10c ~ 10e, the other end is connected with indoor set C, D, E described later.In addition, pipe arrangement 7c ~ 7e is pipe arrangement one end being connected with cut-off valve 11c ~ 11e, the other end is connected with indoor set C, D, E described later.
Fig. 2 is the figure in the Z-Z1 cross section of the switching device shifter B represented in Fig. 1.Fig. 2 represents state when not being energized to motor coil.Here the main structure with regard to cut-off valve 11e is described.Cut-off valve 11e is by solenoid energising, thus can make to be communicated with between the pipe arrangement 7B that is connected with the first connecting pipings 7 and pipe arrangement 7e be connected with indoor set E.
In cut-off valve 11e, arrange main valve chamber 17b between pipe arrangement 7B and pipe arrangement 7e, this main valve chamber 17b defines the transportable space of main valve 21b.In addition, the valve seat 18b with hole 22b is set at the boundary member of main valve chamber 17b and pipe arrangement 7e.Further, lid 19b is fixed on body by internal thread part screw thread, blocks the space in (partition) main valve chamber 17b and outside space.
Main valve 21b slides according to the wall of the pressure change in main valve chamber 17b along main valve chamber 17b, opens the hole 22b closing valve seat 18b.In addition, lid 19b has the secondary valve chamber 24b be communicated with main valve chamber 17b via the first connected entrance 23.In addition, secondary valve chamber 24b forms the space that can make secondary valve 28b slip movement, and this secondary valve 28b opens the bullport 27b closing lid mouth 26b.
Further, the second connected entrance 29b being communicated with secondary valve chamber 24b and pipe arrangement 7e by body mouth 30b be formed in the lid mouth 26b be communicated with on lid 19b and with body mouth 30b and form.Here by being fixed on body by lid 19b screw thread, form cylindric space 31b between body and lid 19b, therefore lid mouth 26b can be positioned at the optional position of circumference.
And lid 19b is formed as parts (with reference to figure 2), will being built-in with the housing 33b of secondary valve 28b and spring 32b by the opening portion of welded and installed at secondary valve chamber 24, installing the O shape ring 34b for sealing main valve chamber 17b in addition.
At this, to be separated with body for attracting the solenoid of secondary valve 28b and to form independently, being arranged on housing 33b.In addition, in order to install O shape ring 34b by blocking between the space 35b between main valve 21b and lid 19b and space 31b.Further, the first connected entrance 23b and main valve 21b is formed abreast.In addition, the clearance (gap) required for slip is set between main valve chamber 17b and main valve 21b.
Cut-off valve 10e is by being energized to electromagnetic valve coil, and the 6e that the pipe arrangement 6B be connected with the first connecting pipings 6 one end, the other end are connected with indoor set E is communicated with.The structure of cut-off valve 10e, the function of composition mechanism etc. are substantially identical with cut-off valve 11e, and in the mechanism of correspondence, use is subscripted a replacement and subscripted b.
Action below with regard to cut-off valve 10,11 is described.Here, representatively based on Fig. 2, cut-off valve 11e is described.First, when not being energized to solenoid, as shown in Figure 2, under the effect of spring 32b, the bullport 27b of lid mouth 26b forms the state be plugged.At this, the pressure in the space 35b in space 36b, the main valve chamber 17b of establishing pipe 7B, the space 37b of pipe arrangement 7e is respectively P1, P2, P3.Pressure dependence is now P1 ≈ P2 > P3.Main valve 21b blocks the hole 22b of valve seat 18b, is blocked by the stream being communicated with pipe arrangement 7B and pipe arrangement 7e.
On the other hand, once to solenoid energising, solenoid just produces electromagnetic force.By this electromagnetic force, secondary valve 28b is moved to housing 33b top, the bullport 27b of lid mouth 26b carries out opening.By like this, the space 35b near the first connected entrance 23b of main valve chamber 17b is communicated with the space 37b of pipe arrangement 7e via the first connected entrance 23b, secondary valve chamber 24b, lid mouth 26b, space 31b and body mouth 30b.Pressure dependence is now P1 > P2 ≈ P3, and the pressure differential produced between the pressure P 1 by the space 36b in pipe arrangement 7B and the pressure P 2 of the space 35b near the first connected entrance 23b, main valve 21b moves to lid 19 side.Therefore, the hole 22b of valve seat 18b carries out opening, and pipe arrangement 7B is communicated with pipe arrangement 7e.Therefore, by making electromagnetic valve coil be energized as required, specific stream can be formed, flowing can be controlled.
Fig. 3 is the figure of the structure representing the aircondition with switching device shifter B.As shown in Figure 3, in the present embodiment, just using freezing cycle device as aircondition and the situation with switching device shifter B be described.In figure 3, the aircondition of present embodiment utilizes pipe arrangement to connect heat source machine A and indoor set C, D, E, forms refrigerant loop.Here, at heat source machine A and the switching device shifter B between indoor set C, D, E shown in connection layout 1 and Fig. 2.
Then, utilize between first connecting pipings 6, second connecting pipings 7 couples of heat source machine A and switching device shifter B and carry out pipe arrangement connection.Gasiform cold-producing medium flows in the first connecting pipings 6, and liquid cold-producing medium flows in the second connecting pipings 7.In order to reduce flow path resistance, the diameter of the first connecting pipings 6 is made to be greater than the second connecting pipings 7.In addition, utilize respectively indoor first connecting pipings 6c ~ 6e, indoor second connecting pipings 7c ~ 7e to switching device shifter B with carry out pipe arrangement between indoor set C, D, E and be connected.
The heat source machine A of present embodiment has compressor 1, cross valve 2, heat source side heat exchanger (outdoor heat converter) 3 and reservoir 4.Compressor 1 compresses the cold-producing medium sucked and discharges.At this, although be not particularly limited, compressor 1 also can such as make operating frequency at random change by converter circuit etc., thus the capacity of compressor 1 amount of cold-producing medium (unit interval send) can be made to change.Cross valve 2 is such as switching the valve of flow of refrigerant according to during cooling operation and when heating running.Heat source side heat exchanger 3 carries out the heat exchange of cold-producing medium and air (outdoor air).Such as, playing the effect of evaporimeter when heating running, carrying out the low pressure refrigerant from the second connecting pipings 7 side inflow and the heat exchange of air, cold-producing medium being evaporated, gasifies.In addition, play the effect of condenser when cooling operation, carry out from cross valve 2 side inflow at compressor 1 by the heat exchange of the cold-producing medium that compresses and air, make condensation of refrigerant, liquefaction.Reservoir 4 is such as the mechanism of the residual refrigerant of storage of liquids.
In addition, indoor set C, D, E has flow regulator 9(9c ~ 9e respectively) and utilize side heat exchanger (indoor heat converter) 5(5c ~ 5e).Further, in indoor set C, D, E, by connecting pipings 8(8c ~ 8e) connection traffic adjuster 9 and utilize side heat exchanger 5.Flow regulator 9 adjusts by changing aperture the refrigerant pressure utilized in side heat exchanger 5.In addition, side heat exchanger 5 is utilized to carry out the heat exchange of cold-producing medium and air.Such as play the effect of evaporimeter when cooling operation, carry out the cold-producing medium of low-pressure state and the heat exchange of air by flow regulator 9.On the other hand, playing the effect of condenser when heating running, carrying out the heat exchange of cold-producing medium from the first connecting pipings 6 side inflow and air.
Fig. 4 is the figure of the flowing of the cold-producing medium represented in the aircondition when cooling operation.Below based on the flowing of the cold-producing medium in refrigerant loop, the running of the aircondition just formed as shown in Figure 3 is described.Here, if indoor set C, D, E freeze respectively.Further, if cut-off valve 10 and 11 is opened.First, be described with regard to the situation of cooling operation according to Fig. 4.Represent the flowing of the cold-producing medium in cooling operation with solid arrow in Fig. 4.
Compressed by compressor 1 and the cold-producing medium of the high temperature of discharging, gases at high pressure (gas) from cross valve 2 in heat source side heat exchanger 3, heat exchange is carried out with air, water etc., thus condensation, liquefaction, such as become the high temperature of gas-liquid two-phase, high pressure, flow out heat source machine A.
Then, indoor set C, D, E is flowed into through cut-off valve 11c ~ 11e, the indoor set second connecting pipings 7c ~ 7e of the second connecting pipings 7, switching device shifter B.Then, reduce pressure after low pressure by flow regulator 9c ~ 9e, through utilizing side heat exchanger 5c ~ 5e.Through out-of-date, cold-producing medium carries out evaporating, while gasify (aerification), cooling is such as the air in the room of heat exchange object.At this, in the control device (not shown) such as controlling each indoor set, the degree of superheat based on the cold-producing medium utilizing the flow export place of side heat exchanger 5c ~ 5e controls the aperture of flow regulator 9c ~ 9e.
Through utilization side heat exchanger 5c ~ 5e and the cold-producing medium gasified through magnetic valve 10c ~ 10e, first connecting pipings 6 of indoor first connecting pipings 6c ~ 6e, switching device shifter B, flow into heat source machine A.Then, be inhaled into compressor 1 via cross valve 2, reservoir 4, by the rear discharge of compression as mentioned above, thus circulate.
Fig. 5 is the figure of the flowing of the cold-producing medium represented in aircondition when heating running.Here, if indoor set C, D, E heat respectively.Solid arrow in Fig. 5 represents the flowing of the cold-producing medium heated in running.
To be compressed by compressor 1 and the cold-producing medium of the high temperature of discharging, gases at high pressure (gas) flows out heat source machine A through cross valve 2.Then, through magnetic valve 10c ~ 10e, the indoor set first connecting pipings 6c ~ 6e of the first connecting pipings 6, switching device shifter B, flow into indoor set C, D, E.
Flow into the cold-producing medium of indoor set C, D, E through utilizing side heat exchanger 5c ~ 5e.Through out-of-date, while cold-producing medium carries out condensation, liquefaction, heat such as the air in the room of heat exchange object.At this, in the control device such as controlling each indoor set, the degree of subcooling based on the cold-producing medium utilizing the flow export place of side heat exchanger 5c ~ 5e controls the aperture of flow regulator 9c ~ 9e.Then, indoor set C, D, E is flowed out after being depressurized to low pressure by flow regulator 9c ~ 9e.
Then, after the cut-off valve 11c ~ 11e, indoor set second connecting pipings 7c ~ 7e of the second connecting pipings 7, switching device shifter B, heat source machine A is flowed into.The cold-producing medium flowing into heat source machine A, by carrying out heat exchange with air, water etc., carries out evaporating, gasifying.Then, be inhaled into discharge chambe 1 via cross valve 2, reservoir 4, compressed rear discharge as described above, thus circulate.
As mentioned above, according to the first embodiment, on the refrigerant loop formed utilizing pipe arrangement 6,7 etc. to connect heat source machine A and indoor set C, D, E, the cut-off valve 10,11 blocking flow of refrigerant is integrally formed in groups, gather according to the quantity of indoor set, group enters switching device shifter B, therefore, cold-producing medium can be suppressed to room internal leakage by small-sized and easy structure, low-cost product can be provided.By arranging the cut-off valve 10,11 of the group number corresponding with indoor set, can only the indoor set relating to refrigrant leakage be separated from refrigerant loop, therefore without the need to stopping all runnings.In addition, by cut-off valve 10,11 is carried out integrated as switching device shifter B, thus guarantee, maintainability is good, can easily decompose etc., and owing to operating swimmingly, therefore can the operating time be shortened, the dwell time of the indoor set relating to refrigrant leakage can be shortened, it can be made to restore to the original state as early as possible.Therefore, can increase the service life.In addition, by the group being formed with cut-off valve 10,11 being formed with gathering together, thus manufacture (production) efficiency can be improved.
At this, the switching device shifter B just in the first embodiment with three groups of cut-off valves 10,11 is illustrated, but is not limited to three groups, and group number all has identical effect arbitrarily.In addition, even if arrange multiple stage thermal source pusher side heat exchanger 3, also identical effect can be played.Even if arrange ice heat storage tank, water heat storage tank (comprising hot water) in series or in parallel with thermal source pusher side heat exchanger 3, also identical effect can be played.
Second embodiment
Fig. 6 is the figure of the switching device shifter B representing the second embodiment of the present invention.The switching device shifter B of present embodiment has the connecting portion Fa corresponding respectively with pipe arrangement 6c ~ 6e.In addition, also there is the connecting portion Fb corresponding respectively with pipe arrangement 7c ~ 7e.In figure 6, connecting portion Fa is communicated with pipe arrangement 6e, can make fluid (gas, liquid) the outside inflow and outflow of refrigerant loop relatively.In addition, connecting portion Fb is also communicated with pipe arrangement 7e, and fluid-phase can be made the outside inflow and outflow of refrigerant loop.
In the present embodiment, pipe arrangement 6c ~ 6e, the 7c ~ 7e corresponding with the indoor set C ~ E of switching device shifter B arrange connecting portion Fa, Fb, fluid inflow and outflow between refrigerant loop outside can be made.In addition, air-tightness confirmation can be carried out, vacuumize, cold-producing medium is additional, such as can obtain following aircondition, it simultaneously can proceed the operation of air conditioner of other indoor sets, and one side easily carries out the maintenance of indoor set refrigrant leakage being detected in the short time.
As shown in Figure 6, connecting portion Fb is made up of pipe arrangement 12b, joint 13b, cap 14b, valve 15b and convex part 16b.As shown in Figure 6, pipe arrangement 12b is connected with pipe arrangement 7e by welding.Be communicated with pipe arrangement 12b.In addition, joint 13b has valve 15b, and this valve 15b has the convex part 16b being inserted in inside.One end of joint 13b is connected with pipe arrangement 12b by welding, and the other end is threaded portion locking cap 14b in addition in order to avoid contacting with convex part 16b.Such as, usual convex part 16b becomes bolt, cuts off and is communicated with outside.Promote convex part 16b by the hole (not shown) had via cap 14b from outside, thus connecting portion Fb carries out opening, can make fluid inflow and outflow between outside.
In addition, connecting portion Fa has by welding the pipe arrangement 12a be connected with pipe arrangement 7e.The formation of connecting portion Fa, the function of formation mechanism etc. are substantially identical with connecting portion Fb, use and subscript a.
Just in specific indoor set (being indoor set E in figure 6), the disposal of connecting portion Fa, Fb that utilizes during refrigrant leakage is had to be described based on Fig. 6 below.Such as when judging there is refrigrant leakage in indoor set E, closing cut-off valve 10e and 11e, indoor set E is separated with the stream (circulation cycle) of cold-producing medium.Then, confirm which position of cold-producing medium machine E is indoor leaked.Now, in the present embodiment, via connecting portion Fa or Fb or their both sides, from inert gases such as outer enclosure nitrogen.By the position of refrigrant leakage can be determined like this.After determining the position of refrigrant leakage, attract via above-mentioned connecting portion Fa or Fb or their both sides and reclaim inert gas.
Then, after leakage position etc. is keeped in repair, connecting portion Fa, Fb can be connected with vavuum pump and vacuumize.And, utilize cold-producing medium to save bottle with flexible pipe and cold-producing medium and be connected, thus the cold-producing medium of ormal weight can be encapsulated.Not only when refrigrant leakage, inspection etc. in also can carry out above disposal.
As mentioned above, according to the switching device shifter B of the second embodiment, connecting portion Fa, Fb can be set accordingly with each cut-off valve 10,11, make the inflow and outflow of fluid opposite outer, therefore, such as can flow into the confirmation that inert gas comes whether to have refrigrant leakage, leakage position etc. to the indoor set be separated with refrigerant loop with cut-off valve 10,11, carry out in other indoor set simultaneously air adjustment and.In addition, for rely on attract vacuumize, cold-producing medium add etc., also can carry out via connecting portion Fa, Fb.Therefore, guarantee, maintainability is good, and the user in room can not feel uncomfortable, indoor set can also be made to restore to the original state as early as possible simultaneously.
3rd embodiment
In the present embodiment, be described with regard to the action of switching device shifter B during certain specific indoor set generation refrigrant leakage according to Fig. 3.Here the situation that just there occurs refrigrant leakage in the room of having installed indoor set E is described.
First, be described with regard to action during cooling operation.When cooling operation, liquid flow of refrigerant enters indoor set E, therefore closes cut-off valve 11e, the flowing of the cold-producing medium that flow into indoor set E is stopped.Then, have passed through the stipulated time after close cut-off valve 10e.By staggering the shut-in time in cut-off valve 10e and cut-off valve 11e, the refrigerant amount in refrigerant loop can be suppressed to reduce, reducing the impact of refrigrant leakage on running, and cold-producing medium can be reduced to the leakage in room.Here, about the stipulated time, although different according to the size (distance etc. of flow of refrigerant) of indoor set E, be set to the enough time for making cold-producing medium flow out.
Below be described with regard to action when heating running.When heating running, because gasiform flow of refrigerant enters indoor set E, therefore make cut-off valve 10e close, the flowing of the cold-producing medium that flow into indoor set E is stopped.Then, have passed through the stipulated time after close cut-off valve 11e.The refrigerant amount in refrigerant loop can be suppressed to reduce, reduce the impact of refrigrant leakage on running, and cold-producing medium can be reduced to the leakage in room.Here, about the stipulated time, it also can be the time different from time during above-mentioned cooling operation.
As mentioned above, according to the 3rd embodiment, on the refrigerant loop formed connecting heat source machine A and indoor set C ~ E with pipe arrangement 6,7 etc., the cut-off valve 10,11 blocking flow of refrigerant is integrally formed in groups, gather according to the quantity of indoor set, group enters switching device shifter B, therefore, cold-producing medium can be suppressed to room internal leakage by small-sized and easy structure.Therefore, by suppressing the oxygen concentration in room to reduce, can provide and not only improve security but also low-cost product.At this, in the present embodiment, although be illustrated with regard to the refrigrant leakage of an indoor set, even if also identical effect can be played when multiple stage indoor set generation refrigrant leakage.
4th embodiment
Fig. 7 is the figure of the structure of the leakage monitoring self system represented in the aircondition of the 4th embodiment of the present invention.In the figure 7, refrigrant leakage sensor 39c ~ 39e be separately positioned on indoor set C ~ E has been installed room in, detect the refrigerant condition in room.Further, if such as judge that the concentration of cold-producing medium becomes more than setting, then think and refrigrant leakage detected, send the leakage signal representing refrigrant leakage state.
Heat source machine control device 41 carries out the control of each mechanism forming heat source machine A.In the present embodiment, especially having for carrying out the communication means of communication with other equipment of aircondition, the communication of various signal can be carried out.In addition, there is storing mechanism (memory), store the data relevant to refrigrant leakage.Indoor set control device 42c ~ 42e controls each mechanism forming indoor set C ~ E respectively.In the present embodiment, the communication of various signal can be carried out between heat source machine control device 41.In addition, the process showing operating condition etc. on the indication mechanism at remote controller 43c ~ 43e is carried out.
In addition, interface arrangement 40, is energized sending to switching device shifter B about the signal (hereinafter referred to as shutdown signal) of cutting out (cold-producing medium blocks) of sending from heat source machine communication device 41 to the solenoid of the cut-off valve 10,11 that will cut out via control line.At this, interface arrangement 40 connects with the connection be connected between heat source machine communication device 41 and indoor set communication device 42c ~ 42e, and available identical communication system carries out communication.Therefore, can reduce and only have the communication relevant with refrigrant leakage to become the such possibility of communication failure.
Remote controller 43c ~ 43e is the input mechanism for inputting instruction to indoor set C ~ E for user.Also there is indication mechanism in addition, based on the Signal aspects operating condition etc. from indoor set C ~ E.In the present embodiment, the information of refrigrant leakage is shown based on signal.
Fig. 8 is the figure of the flow process relevant with leakage monitoring self representing the 4th embodiment.In the present embodiment, detect that the situation of refrigrant leakage is described with regard to refrigrant leakage sensor 39c.If the refrigrant leakage sensor 39c be arranged in room such as detects the cold-producing medium (step S1) of the concentration of more than setting, the indoor set control device 42c just from refrigrant leakage sensor 39c to indoor set C sends leakage signal.
Indoor set control device 42c receives the leakage signal of refrigrant leakage sensor 39c.Then, indoor set control device 42c such as shows the information (step S2) of leakage on the indication mechanism of remote controller 43c.In addition, heat source machine control device 41 sends the refrigrant leakage information signal based on the leakage signal received.At this, such as, can report to the police etc. when sound can be generated.
The data relevant to leakage, once receive refrigrant leakage information signal, are just stored in the storing mechanism in heat source machine control device 41 (step S3) by heat source machine control device 41.Here be store to storing mechanism, but also such as can send signal by superior device (such as central controller etc.).And heat source machine control device 41 sends the shutdown signal for making cut-off valve 10c, the 11c relevant to indoor set C cut out to interface arrangement 40.
Interface arrangement 40 sends shutdown signal to switching device shifter B.In switching device shifter B, the solenoid relevant to cut-off valve 10c, the 11c to corresponding is energized, and closes cut-off valve 10c, 11c(step S4).Here, about the switching device shifter B based on shutdown signal action, carry out the action of the cut-off valve 10,11 disposed, with illustrated the same in embodiment first and the 3rd.
As mentioned above, according to the 4th embodiment, usual Communication Control line between communication connection heat source machine A and indoor set C ~ E such as, connect the interface arrangement 40 sending command signal to switching device shifter B, utilizes identical communication system to send information, thus can prevent communication failure.Therefore, stable action can be formed, cold-producing medium can be suppressed to room internal leakage.At this, in the present embodiment, heat source machine A sends instruction to interface arrangement 40, but is not limited to this.Such as also can send command signal directly to interface arrangement 40 by machine C ~ E indoor.In addition, be formed as the structure being separated interface arrangement 40 and heat source machine A in the figure 7, but also can be the structure etc. interface arrangement 40 is loaded on heat source machine A.
Industry utilizes possibility
In the above-described embodiment, just the situation that switching device shifter B is arranged on aircondition is illustrated.The present invention is not limited to these devices, also can be applied to such as refrigerating plant, heat pump device etc., form cold-producing medium other freezing cycle devices at the refrigerant loop of pipe arrangement Inner eycle.
Description of reference numerals
A heat source machine, B switching device shifter, C ~ E indoor set, Fa, Fb connecting portion, 1 compressor, 2 cross valves, 3 thermal source pusher side heat exchangers, 4 reservoirs, 5c indoor set C utilizes side heat exchanger, and 5d indoor set D utilizes side heat exchanger, and 5e indoor set E utilizes side heat exchanger, 6 first connecting pipings, 6c, 6d, 6e indoor first connecting pipings, 7 second connecting pipings, 7c, 7d, 7e indoor second connecting pipings, 8c, 8d, 8e connecting pipings, 9 flow regulator, 10, 10c, 10d, 10e, 11, 11c, 11d, 11e cut-off valve, 12a, 12b pipe arrangement, 13a, 13b joint, 14a, 14b cap, 15a, 15b valve, 16a, 16b convex part, 17a, 17b main valve chamber, 18a, 18b valve seat, 19a, 19b lid, 20a, 20b body mouth, 21a, 21b main valve, 22a, 22b hole, 23a, 23b housing, 24a, the secondary valve chamber of 24b, 26a, 26b lid mouth, 27a, 27b bullport, 28a, the secondary valve of 28b, 29a, 29b second connected entrance, 30a, 30b body mouth, 31a, 31b, 35a, 35b, 36a, 36b space, 32a, 32b spring, 33a, 33b housing, 34a, 34bO shape ring, 39c ~ 39e refrigrant leakage sensor, 40 interface arrangements, 41 heat source machine control device, 42c ~ 42e indoor set control device, 43c ~ 43e remote controller.
Claims (5)
1. an aircondition, this aircondition possesses heat source machine, multiple indoor set and multiple pipe arrangement, and described pipe arrangement is used for described heat source machine to make refrigerant circulation with being connected between indoor set,
Described aircondition possesses switching device shifter, this switching device shifter have for respectively based on instruction between each indoor set at multiple cut-off valves that the flowing of cold-producing medium is blocked by the refrigerant inflow side of described indoor set and refrigerant outflow side, described cut-off valve is integrally formed on described pipe arrangement respectively in groups, described switching device shifter has the connecting portion that fluid from outside can be made to described pipe arrangement inflow and outflow on the coupling part that the cut-off valve of each group is connected with the pipe arrangement of described indoor pusher side, the group of the described cut-off valve of the quantity that described switching device shifter set is corresponding with the quantity of described indoor set and forming,
When cold-producing medium leaks from described indoor set, close the described cut-off valve of the refrigerant inflow side flowed into described indoor set, then close the described cut-off valve of the refrigerant outflow side flowed out from described indoor set.
2. aircondition according to claim 1, it is characterized in that, described aircondition possesses refrigrant leakage testing agency, this refrigrant leakage testing agency is when detecting that cold-producing medium sends leakage signal when leaking from the described indoor set air adjustment and object space, under the state of being closed by the described cut-off valve detected by described refrigrant leakage testing agency on coupling part that being arranged in the conditioned space of refrigrant leakage be connected with the pipe arrangement of described indoor pusher side, indoor set described in other can be made to operate.
3. aircondition according to claim 2, is characterized in that, described aircondition also possesses interface arrangement, and this interface arrangement sends the switching signal corresponding cut-off valve being closed based on described leakage signal to described switching device shifter;
Utilize the communication system identical with the communication system carrying out communication between described heat source machine and described indoor set, carry out the communication of the signal relevant to described refrigrant leakage.
4. aircondition according to claim 3, is characterized in that, described indoor set also possesses controller, and this controller has the indication mechanism of the state display carrying out described indoor set,
When receiving the leakage signal from described refrigrant leakage testing agency, in the information that the indication mechanism display of described controller is leaked.
5. the aircondition according to claim 3 or 4, is characterized in that, described heat source machine possesses storing mechanism, the information of this storing mechanism memory leak when receiving the leakage signal from described refrigrant leakage testing agency.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2010/003207 WO2011141959A1 (en) | 2010-05-12 | 2010-05-12 | Switching apparatus and air conditioning apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102893095A CN102893095A (en) | 2013-01-23 |
| CN102893095B true CN102893095B (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201080066716.1A Active CN102893095B (en) | 2010-05-12 | 2010-05-12 | Switching device shifter and aircondition |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20130014525A1 (en) |
| EP (1) | EP2570740B1 (en) |
| JP (1) | JPWO2011141959A1 (en) |
| CN (1) | CN102893095B (en) |
| WO (1) | WO2011141959A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102893095A (en) | 2013-01-23 |
| WO2011141959A1 (en) | 2011-11-17 |
| US20130014525A1 (en) | 2013-01-17 |
| EP2570740A1 (en) | 2013-03-20 |
| JPWO2011141959A1 (en) | 2013-07-22 |
| EP2570740B1 (en) | 2019-02-27 |
| EP2570740A4 (en) | 2017-12-13 |
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