CN101545700A - Chiller unit, refrigeration system having chiller unit and air conditioner having chiller unit - Google Patents

Chiller unit, refrigeration system having chiller unit and air conditioner having chiller unit Download PDF

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Publication number
CN101545700A
CN101545700A CNA2009101282131A CN200910128213A CN101545700A CN 101545700 A CN101545700 A CN 101545700A CN A2009101282131 A CNA2009101282131 A CN A2009101282131A CN 200910128213 A CN200910128213 A CN 200910128213A CN 101545700 A CN101545700 A CN 101545700A
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CN
China
Prior art keywords
refrigerating plant
aqueous medium
pipe arrangement
temperature
heat exchanger
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Granted
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CNA2009101282131A
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Chinese (zh)
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CN101545700B (en
Inventor
福岛道雄
藤川英树
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Sanyo Electric Co Ltd
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Sanyo Electric Co Ltd
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Priority claimed from JP2008082626A external-priority patent/JP2009236392A/en
Priority claimed from JP2008082627A external-priority patent/JP5140473B2/en
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Publication of CN101545700A publication Critical patent/CN101545700A/en
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Publication of CN101545700B publication Critical patent/CN101545700B/en
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Abstract

The present invention provides a chiller unit, refrigeration system having chiller unit and air conditioner having chiller unit. The chiller unit can reduce a labor imposed on a work associated with installation of the chiller unit, can substantially accurately detect the flow of water medium in a water medium pipe by a flow switch and enhance the maintenance performance of the flow switch. The chiller unit includes a chiller unit main body connected to a refrigeration cycle, a plate type heat exchanger unit that is secured to an upper stage portion of the chiller unit main body and divided into plural plate type heat exchangers, and a pipe group having a water medium pipe and a refrigerant pipe for supplying water medium and refrigerant to each of the plate type heat exchangers while branching the water medium and the refrigerant and collectively disposed at a lower stage portion of the chiller unit main body, wherein at least an exit side portion of the water medium pipe is routed substantially horizontally along the bottom portion of the chiller unit main body and a flow switch is provided in a horizontally-extending pipe portion of the water medium pipe.

Description

Refrigerating plant, refrigeration system and aircondition with refrigerating plant
Technical field
The present invention relates to possess the refrigerating plant (refrigeration unit) that between cold-producing medium and aqueous medium, carries out the heat exchanger of heat exchange, possess the refrigeration system of refrigerating plant and have the aircondition of refrigerating plant.
Background technology
Usually, the refrigerating plant (refrigeration unit) that possesses refrigerating plant (refrigeration unit) main body that is connected with freeze cycle is well-known (for example, with reference to TOHKEMY 2004-251486 communique).This refrigerating plant is well known that following refrigerating plant: will be divided into the bottom that a plurality of plate heat exchangers is installed in the refrigerating plant main body, in each plate heat exchanger, with cold-producing medium and aqueous medium shunting, will unroll for the pipe arrangement class of this shunting extends in this refrigerating plant main body.
In this refrigerating plant, aqueous medium might be freezed by sub-cooled in heat exchanger, still, under the state that aqueous medium freezes, under the situation of refrigerating plant continuous running, the pump that might damage the aqueous medium pipe arrangement and be used to make aqueous medium to flow.
For anti-situation here, have following refrigerating plant: the vane type flow switch that freezes that will detect aqueous medium with fitted outside be arranged on the aqueous medium pipe arrangement of outside of refrigerating plant, detect under the situation about freezing at this flow switch, the running of freeze cycle is stopped.
But, in above-mentioned refrigerating plant, refrigerating plant is arranged on outdoor after, the flow switch that needs to freeze to detect usefulness is contained in the operation of assigned position of the aqueous medium pipe arrangement that is connected with this refrigerating plant and so on outward, and need carry out the various adjustings of flow switch, in the operation of the setting of following refrigerating plant, need the labour.
In addition, in this refrigerating plant, flow switch is being arranged under the situation of refrigerating plant inside, reach, unroll in the bottom of refrigerating plant main body owing to be divided into a plurality of plate heat exchangers for the pipe arrangement class of shunting, therefore, the maintenance of flow switch, maintenance difficulty.
This flow switch has following problem: because of the easy flase drop of vibration, when this flow switch being arranged on refrigerating plant when inner, be subject to the influence of the vibration etc. of the compressor of the formation freeze cycle of disposed adjacent for example, easily cause the flase drop that flows in the water pipe arrangement to be surveyed.
In addition, known have a following refrigerating plant: detect flowing of water by the flow switch that is used in this refrigerating plant, and unusual based on this testing result testing pump.This flow switch is arranged on the water pipe arrangement, is utilizing flow switch to detect under the unusual situation of pump, control the driving of off-premises station and pump is stopped., according to the situation that is provided with, often not that one but a plurality of refrigerating plant connect side by side with respect to off-premises station.Under this situation, the water pipe arrangement still is divided into multisystem with system connection connects the favourable method of attachment of selection usually.
But, must be set at following control: under the situation that the water pipe arrangement is connected with a system, when all flow switches all move, off-premises station is stopped, under the situation that is divided into the multisystem connection, when arbitrary switch motion, off-premises station is stopped.
And, have following problem: which kind of connection status the water pipe arrangement is set at, when dispatching from the factory, can not judges, become the operation corresponding that comprises constructions such as electric wiring with the scene.
In addition, in this refrigerating plant, the heat exchanger heat exchange efficiency is good, but under the frozen situation of the water of inner loop, freezes in order to eliminate this, need be with self thermal cut-out (サ-モ オ Off).All the time, in refrigerating plant, when refrigerant temperature reaches for example subzero 10 ℃, with the refrigerating plant thermal cut-out., as mentioned above, refrigerating plant is connected with off-premises station, in addition, sometimes one or more straight swollen indoor sets is connected side by side with refrigerating plant.Under this situation, straight swollen indoor set is independent air-conditioning, and the space of carrying out air-conditioning is different, and carries out heat unlatching, the shutoff of straight swollen indoor set in the relation of room temperature and design temperature repeatedly, therefore, often produces fierce load fluctuation.
In said structure, when the load of straight swollen indoor set fluctuateed intensely, too much cold-producing medium flowed into refrigerating plant, and refrigerant temperature is instantaneous to reach for example subzero 10 ℃, can cause thermal cut-out refrigerating plant immediately.This phenomenon is the frequent transient that takes place, and it all has following problem at every turn: as long as with the refrigerating plant thermal cut-out, just can not carry out the generation of cold warm water swimmingly.
In addition, in above-mentioned structure,,, also can increase the internal circulating load of cold-producing medium even then the load of straight swollen indoor set is little as long as the burden requirement of refrigerating plant is big.Under this situation, have following problem: after a large amount of cold-producing mediums flowed into straight swollen indoor set, between the heat exchanger fin of straight swollen indoor set, condensed water can freeze, and air quantity reduces, and thus, can not carry out air-conditioning swimmingly.
Summary of the invention
The present invention develops in view of above-mentioned situation, its purpose is, a kind of refrigerating plant is provided, it can alleviate the labour of the operation needs of following the refrigerating plant setting, utilize flow switch, can correctly detect flowing in the water pipe arrangement substantially, improve maintenance, the maintainability of flow switch.
In addition, another object of the present invention is to, a kind of refrigeration system with following refrigerating plant is provided, under situation about a plurality of refrigerating plants being connected side by side with respect to off-premises station, no matter the water pipe arrangement is connected with a system, still connect with multisystem, all comprise construction such as electric wiring and operation can be set at the scene easily.
In addition, another object of the present invention is to, a kind of air-conditioner that straight swollen indoor set and refrigerating plant and off-premises station are connected side by side is provided, it can prevent the freezing of water in the refrigerating plant, can carry out air-conditioning swimmingly.
To achieve these goals, the refrigerating plant according to first aspect present invention is characterized in that, possesses: the refrigerating plant main body, and it is connected with freeze cycle; Plate heat exchanger, it is installed in the epimere portion of this refrigerating plant main body, and is divided into a plurality of; The pipe arrangement class, that it is made of the water pipe arrangement of the shunting of cold-producing medium and aqueous medium being supplied with each plate heat exchanger and refrigerant pipe and centralized configuration is in the hypomere portion of this refrigerating plant main body, outlet side to the described water pipe arrangement of major general is derived along the approximate horizontal ground, bottom of refrigerating plant main body, along the pipe arrangement portion that approximate horizontal is extended flow switch is set at this.
In above-mentioned refrigerating plant, also can for: be fixed on the bottom of described refrigerating plant main body along described pipe arrangement portion that approximate horizontal is extended via anchor clamps, near the described pipe arrangement portion described anchor clamps is provided with described flow switch.
In above-mentioned refrigerating plant, also can for: described refrigerating plant main body possesses the supporting pallet in the substantial middle portion of short transverse, upload at this supporting pallet and to put described plate heat exchanger, utilize support plate this plate heat exchanger to be bearing in the sidepiece of described refrigerating plant main body from the side.
In above-mentioned refrigerating plant, also can for: described each plate heat exchanger is installed in the relative sidepiece of described refrigerating plant main body, to keep the weight balancing of described refrigerating plant integral body.
In above-mentioned refrigerating plant, also can for: described flow switch for having in described pipe arrangement portion along the vane type flow switch of the blade that extends to the craspedodrome direction with the flow direction of described aqueous medium.
In addition, to achieve these goals, refrigeration system according to second aspect present invention, its from off-premises station via refrigerant piping the supply system cryogen, in addition, to connect side by side with respect to described off-premises station via many refrigerating plants that the aqueous medium pipe arrangement of at least one system is supplied with aqueous medium, it is characterized in that, described a plurality of refrigerating plant has flow switch respectively, and possess: first mechanism, its be divided into a plurality of systems and with situation that the aqueous medium pipe arrangement of a plurality of systems is connected under, when in described each flow switch during arbitrary switch work, described off-premises station is stopped; Second mechanism, it when described each switch all moves, stops described off-premises station under described refrigerating plant and situation that the water pipe arrangement of a system is connected; Selection mechanism, it is based on the annexation of described refrigerating plant and described aqueous medium pipe arrangement, selects a ground and selects in described first mechanism and described second mechanism one.
In above-mentioned refrigeration system, also can for: described first mechanism, described second mechanism and described selection mechanism be installed in control described off-premises station controller on.
In above-mentioned refrigeration system, also can for: the described control part of described off-premises station and each control part of described a plurality of refrigerating plants are connected via order wire, utilize described selection mechanism, when selecting the arbitrary mechanism of described first mechanism and described second mechanism, the described control part of described off-premises station is via the described control device interlock of described order wire and described refrigerating plant and carry out the described mechanism of having selected.
In addition, to achieve these goals, according to the air-conditioner of third aspect present invention, it possesses: off-premises station; Refrigerating plant, it has the heat exchanger of supplying with aqueous medium from this off-premises station via refrigerant piping the supply system cryogen again via the aqueous medium pipe arrangement; Straight swollen indoor set, it supplies with described cold-producing medium from described off-premises station via described refrigerant piping, described refrigerating plant is connected with described off-premises station via described refrigerant piping side by side with described straight swollen indoor set, it is characterized in that, facility have the first thermal cut-out mechanism in the described straight puff, when the temperature of the cold-producing medium that flows in described straight swollen indoor set reaches the freezing temperature of condensed water, this first thermal cut-out mechanism makes this straight swollen indoor set thermal cut-out, described refrigerating plant has the second thermal cut-out mechanism, the temperature of the described aqueous medium that in described refrigerating plant, flows, in the temperature of the described cold-producing medium that in described refrigerating plant, flows and the temperature of described heat exchanger arbitrary temperature reach water freeze to suppose temperature the time, this second thermal cut-out mechanism makes this refrigerating plant thermal cut-out.
In above-mentioned air-conditioner, also can for: the temperature of described cold-producing medium be below the described freezing temperature state continuance during the stipulated time, the described first thermal cut-out mechanism makes described straight swollen indoor set thermal cut-out.
In above-mentioned air-conditioner, also can have the indoor refrigerant temperature sensors of the temperature that is used to detect cold-producing medium for: the described first thermal cut-out mechanism.
In above-mentioned air-conditioner, also can for: the described second thermal cut-out mechanism has: the refrigerating plant refrigerant temperature sensors, it is used to detect the temperature of cold-producing medium; Refrigerating plant aqueous medium temperature sensor, it is used to detect the temperature of aqueous medium; Heat-exchanger temperature sensor, it is used to detect the surface temperature of described heat exchanger; The extraneous gas temperature sensor, it is used to detect the extraneous gas temperature.
In above-mentioned air-conditioner, also can for: described air-conditioner also possesses: circulating pump, it is used for supplying with aqueous medium to described refrigerating plant; Command device, during its running at described refrigerating plant stops, externally the temperature of gas reach water freeze to suppose temperature the time, instruct described circulating pump running beginning.
According to the present invention,, therefore, can alleviate the labour of the operation needs of following the refrigerating plant setting because the vane type flow switch is set in advance in the inside of refrigerating plant main body.In addition, owing to be provided with flow switch, therefore, can improve maintenance, the maintenance property of flow switch in the hypomere portion that has guaranteed the space.In addition,, therefore, the misoperation that causes can be prevented to vibrate, flowing of aqueous medium can be correctly detected substantially owing in the aqueous medium pipe arrangement, be subjected to the little position of vibration effect that flow switch is set.
In addition, according to the present invention, be located at the 3rd function of the control part of off-premises station by use, the operating personnel is to possess water pipe arrangements such as a system or a plurality of systems according to refrigeration system, can easily first function and second function be switched, therefore, can carry out the operation that is provided with of refrigeration system easily.
In addition, according to the present invention, with respect to off-premises station with in straight swollen indoor set and the air-conditioner that refrigerating plant is connected side by side, can prevent the freezing of condensed water of the heat exchanger of straight swollen indoor set, air-conditioning can be carried out swimmingly, and the freezing of cold water of refrigerating plant can be prevented.
Description of drawings
Fig. 1 is the refrigerant loop figure of the refrigerating plant that possesses refrigerating plant of first embodiment;
Fig. 2 is the refrigerating plant seen from front face side and the off-premises station figure of the situation of configuration side by side;
Fig. 3 is the refrigerating plant seen from rear side and the off-premises station figure of the situation of configuration side by side;
Fig. 4 is the refrigerating plant seen from the top and the off-premises station figure of the situation of configuration side by side;
Fig. 5 is the stereogram of the refrigerating plant seen from a side that disposes the Denso case;
Fig. 6 is the stereogram that never disposes the refrigerating plant that a side of Denso case sees;
Fig. 7 is near the figure of the outflow side aqueous medium pipe arrangement the flow switch of seeing from the top;
Fig. 8 is the VIII-VIII profile of Fig. 7;
Fig. 9 is the front view of flow switch that is installed on the state of outflow side aqueous medium pipe arrangement;
Figure 10 is the refrigerant loop figure of the refrigerating plant that possesses refrigerating plant of second embodiment;
Figure 11 is the stereogram of the refrigerating plant seen from a side that disposes the Denso case;
Figure 12 is the stereogram that never disposes the refrigerating plant that a side of Denso case sees;
Figure 13 is an expression structure chart the 3rd embodiment, that possess the refrigeration system of a plurality of system water pipe arrangements;
Figure 14 is the flow chart of the action of expression refrigeration system;
Figure 15 is the structure chart that expression one system possesses the refrigeration system of water pipe arrangement;
Figure 16 is another routine structure chart that expression one system possesses the refrigeration system of water pipe arrangement;
Figure 17 is the flow chart of the action of expression refrigeration system;
Figure 18 is the schematic diagram of structure of the air-conditioner of expression the 4th embodiment;
Figure 19 is an action flow chart in expression the 4th embodiment, the refrigerating plant when cold water generates.
The specific embodiment
Below, with reference to accompanying drawing embodiments of the present invention are described.
(first embodiment)
Fig. 1 is the figure of the refrigeration system of expression present embodiment, is the refrigerant loop figure that possesses the refrigerating plant 10 of refrigerating plant 12.
As shown in Figure 1, refrigerating plant 10 possesses off-premises station 11 and refrigerating plant 12, and the refrigerating plant side refrigerant piping 14B of the outdoor refrigerant pipe arrangement 14A of off-premises station 11 and refrigerating plant 12 links via open valve 52,53, and forms freeze cycle 10A.In addition, in the following description, do not have under the situation of special difference, be called " refrigerant piping 14 " at outdoor refrigerant pipe arrangement 14A and refrigerating plant side refrigerant piping 14B.
On the outdoor refrigerant pipe arrangement 14A of off-premises station 11, be equipped with compressor 16.This compressor 16 drives via the V-type band and by gas engine 30, is equipped with accumulator 17 in the suction side, is equipped with cross valve 18 in the discharge side via separator 17A.On this cross valve 18, be equipped with outdoor heat converter 19, outdoor expansion valve 24, dry core 25 successively.In addition, outdoor expansion valve 24 is carried out bypass and is equipped with cold-producing medium is bypass pipe 26, and this cold-producing medium is that bypass pipe 26 is provided with the check-valves 26A that prevents the cold-producing medium adverse current.Outdoor fan 20 with oriented these outdoor heat converter 19 air-supplies of outdoor heat converter 19 disposed adjacent.Symbol 29 is with the refrigerant pressure of the discharge side of compressor 16 safety valve to the suction side of compressor 16 earial drainage.
Supply with gaseous mixture from engine fuel supply device 31 to the gas engine 30 of drive compression machine 16.This engine fuel supply device 31 is equipped with two fuel shut off valve 33, zeroing device 34, fuel control valve 35 and actuator 36 successively on fuel supplying tubing 32, the side end of the actuator 36 of this fuel supplying tubing 32 is connected with gas engine 30.In addition, air filter 36A is connected with fuel supplying tubing 32.
In addition, engine oil feedway 37 is connected with gas engine 30.This engine oil feedway 37 is equipped with oil feed pump 40 on fuel feeding pipe arrangement 38, to gas engine 30 suitable supply engine oil.In addition, engine oil feedway 37 possesses secondary food tray 37A and oil level switch 37B.
In addition, be provided with on off-premises station 11 and be used for making cooling water to reclaim the engine cooling apparatus 41 of the heat of gas engine 30 in gas engine 30 circulations, this engine cooling apparatus 41 is provided with the cooling water pipe 42 of flow of cooling water and carries out the electric cooler triple valve 43 that pipe arrangement is connected.
Circulating pump 44 and exhaust-heat exchanger 45 carry out pipe arrangement with an outlet of two outlets of this electric cooler triple valve 43 successively and are connected, by the pipe arrangement path that electric cooler triple valve 43, circulating pump 44 and exhaust-heat exchanger 45 are connected, form and make the path of returning gas engine 30 by the cooling water of gas engine 30.At this, exhaust-heat exchanger 45 is the heat exchanger that carries out heat exchange between the waste gas of gas engine 30 and cooling water, and the exhaust silencer 46, the exhaust tip part 47 that are used to handle waste gas are connected with this exhaust-heat exchanger 45.
In addition, the inlet of cooling water electric T-shaped valve 48 is connected with another outlet pipe arrangement of electric cooler triple valve 43.One end of heat extraction recovery heat exchanger 49 is connected with an outlet pipe arrangement of this cooling water electric T-shaped valve 48, and in addition, an end of radiator 50 is connected with another outlet pipe arrangement of cooling water electric T-shaped valve 48.At this, the heat exchanger of heat extraction recovery heat exchanger 49 for carrying out heat exchange between cold-producing medium in outdoor refrigerant pipe arrangement 14A and the cooling water in the cooling water pipe 42 in the present embodiment, adopts plate heat exchanger.In addition, radiator 50 is parts that the cooling water by radiator 50 is cooled off, and itself and this outdoor fan 20 disposed adjacent are to supply with the wind pushing air of outdoor fan 20.In addition, symbol 51 is the cooling water water storage tank that will suitably supply with the cooling water storage of cooling water pipe 42.
On the other hand, carry out the device of heat exchange generation cold water or warm water between refrigerating plant 12 the cold-producing medium, and possess plate heat exchanger 62a, the 62b that between cold-producing medium and aqueous medium, carries out heat exchange for the refrigerating plant side refrigerant piping 14B that by aqueous medium pipe arrangement 61 in, flows into the aqueous medium in the refrigerating plant 12 and be connected with above-mentioned outdoor refrigerant pipe arrangement 14A.
Aqueous medium pipe arrangement 61 possesses inflow side aqueous medium pipe arrangement 89 that the aqueous medium that flows into plate heat exchanger 62a, 62b flows and the outflow side aqueous medium pipe arrangement 90 that flows from the aqueous medium that plate heat exchanger 62a, 62b flow out.Inflow side aqueous medium pipe arrangement 89 is in branch point a1 branch, and the pipe arrangement in the pipe arrangement after the branch is connected with plate heat exchanger 62a at connecting portion a2, and another pipe arrangement is connected with plate heat exchanger 62b at connecting portion a3.In addition, the outflow side aqueous medium pipe arrangement 90 that is connected with the connecting portion a4 of plate heat exchanger 62a and, the outflow side aqueous medium pipe arrangement 90 that is connected with the connecting portion a5 of plate heat exchanger 62b are derived from refrigerating plant 12 then at junction of two streams a6 interflow.
In addition, two motor-driven valves 60 that are used to be controlled at the flow of the cold-producing medium that flows in the refrigerating plant side refrigerant piping 14B are connected with refrigerating plant side refrigerant piping 14B.The refrigerating plant side refrigerant piping 14B that is connected with this motor-driven valve 60 is after branch point b1 branch, and a pipe arrangement of the pipe arrangement after the branch is connected with plate heat exchanger 62a at connecting portion b2, and another pipe arrangement is connected with plate heat exchanger 62b at connecting portion b3.In addition, the refrigerating plant side refrigerant piping 14B that is connected with the connecting portion b4 of plate heat exchanger 62a connects at branch point b6 with the refrigerating plant side refrigerant piping 14B that is connected with the connecting portion b5 of plate heat exchanger 62b.
Like this, in the refrigerating plant 12 of present embodiment, two plate heat exchanger 62a, 62b are provided with side by side with respect to aqueous medium pipe arrangement 61, and two plate heat exchanger 62a, 62b are provided with side by side with respect to refrigerating plant side refrigerant piping 14B.Therefore, can make the temperature of the cold-producing medium that flows into two plate heat exchanger 62a, 62b respectively roughly the same, and can the aqueous medium that flow into two plate heat exchanger 62a, 62b respectively side by side be cooled off with roughly the same temperature or heat, can cold water or warm water be generated the temperature that requires with high accuracy.
To be expression be arranged on state diagram when outdoor with off-premises station 11 and refrigerating plant 12 to Fig. 2～Fig. 4, and Fig. 2 is the off-premises station 11 seen from face side and the figure of refrigerating plant 12, and Fig. 3 is the figure that sees from rear side, and Fig. 4 is the schematic diagram of expression situation about seeing from the top.
As Fig. 2～shown in Figure 4, in the present embodiment, off-premises station 11 and refrigerating plant 12 are arranged on outdoor with the state that mounting arranged side by side is fixed on the special-purpose vibrationproof pallet 70.As shown in Figures 2 and 3, the structure of this vibrationproof pallet 70 is: possess second plate 72 that mounting is fixed with first plate 71 of off-premises station 11 and refrigerating plant 12 and is configured in the below of this first plate 71, the vibration that padded coaming 73 between these two first plates 71 and second plate 72, padded coaming 73 produce when absorbing off-premises station 11 runnings.According to this structure, the vibration that produces in the time of can relaxing because of off-premises station 11 runnings causes harmful effect to off-premises station 11 and refrigerating plant 12.
In addition, because off-premises station 11 and refrigerating plant 12 are set up in parallel on the vibrationproof pallet 70 of special use, therefore, operating personnel etc. are by being installed in off-premises station 11 and refrigerating plant 12 position of the regulation of vibrationproof pallet 70, just operation can be set easily, can realize the raising of operating efficiency.
In addition, as Fig. 2 and shown in Figure 4, be provided with the Denso case 74 of the electronic equipment of taking in each equipment that is used to control off-premises station 11 in the front face side of the off-premises station main body 76 of off-premises station 11, the front panel 75 in the place ahead by will being arranged on Denso case 74 is pulled down, and the operating personnel can be easily near this Denso case 74.Equally, be provided with the Denso case 78 (in the lump with reference to Fig. 5 and Fig. 6) of the electronic equipment of taking in each equipment that is used to control refrigerating plant 12 in the front face side of the refrigerating plant main body 77 of refrigerating plant 12, the front panel 79 (Fig. 2) in the place ahead by will being arranged on Denso case 78 is pulled down, and the operating personnel can be easily near this Denso case 78.And, the control that is accommodated in Denso case 74 is connected by distribution (not shown) with electronic equipment with the control that is accommodated in Denso case 78 with electronic equipment and can makes signal communication, and these controls link with electronic equipment and control each equipment of off-premises station 11 and refrigerating plant 12.
At this, Denso case 74,78 possesses electronic equipment, produces more maintenance, maintenance, and therefore, requirement can be approaching easily.In addition, because the control of Denso case 74,78 links with electronic equipment, therefore, requirement can be keeped in repair Denso case 74,78 simultaneously.In the present embodiment, off-premises station 11 and refrigerating plant 12 are configured on the vibrationproof pallet 70 side by side, and be provided with Denso case 74, be provided with Denso case 78 in the front face side of refrigerating plant 12 in the front face side of off-premises station main body 76, therefore, the operating personnel is by pulling down the front panel 75 of off-premises station 11 and the front panel 79 of refrigerating plant 12, can be easily near Denso case 74,78, and can keep in repair Denso case 74,78 simultaneously.
In addition, as shown in Figure 3, be formed with refrigerant piping through hole 80a, 80b that refrigerant piping 14 connects at the back side of off-premises station main body 76, and be formed with refrigerant piping through hole 81a, 81b that refrigerant piping 14 connects at the back side of refrigerating plant main body 77.And, from the refrigerant piping 14 that off-premises station main body 76 derives with through hole 80a, 80b via refrigerant piping extend to refrigerant piping with through hole 81a, 81b near, then via refrigerant piping through hole 81a, 81b guiding refrigerating plant main body 77, thus, outdoor refrigerant pipe arrangement 14A (Fig. 1) is connected with refrigerating plant side refrigerant piping 14B (Fig. 1).Like this, in the present embodiment, owing to expose the rear side that externally refrigerant piping 14 is positioned at off-premises station main body 76 and refrigerating plant main body 77, therefore, when seeing the off-premises station 11 of the state that is arranged at vibrationproof pallet 70 and refrigerating plant 12 from the front, be difficult to see refrigerant piping 14, can realize the raising of appearance property.
In addition, in the present embodiment, as shown in Figure 4, the width H2 of the width H1 of the depth direction of off-premises station 11 and the depth direction of refrigerating plant 12 forms with roughly the same width, the unified sense of off-premises station 11 and refrigerating plant 12 can be strengthened, the raising of appearance property can be realized.In addition, refrigerant piping can be formed roughly linearity with through hole 80a, 80b and refrigerant piping with the refrigerant piping between through hole 81a, the 81b 14, can realize that the workability of refrigerant piping 14, cost reduce.
Fig. 5 is the stereogram of the refrigerating plant main body 77 seen from a side that disposes above-mentioned Denso case 78, and Fig. 6 is the stereogram that never disposes the refrigerating plant main body 77 that a side of Denso case 78 sees.In addition, in this two figure, the side panel and the top panel above the formation that constitute the side of refrigerating plant main body 77 are removed.But for convenience of description, a part that is arranged at the plate at the back side is the state of backplate 82 for installing.
As Fig. 5 and shown in Figure 6, refrigerating plant main body 77 forms roughly rectangular shape, and possesses framework 83 is arranged, the part that framework 83 constitutes corresponding to each limit of refrigerating plant main body 77.This framework 83 possesses the central crossbearer 84 position, that extend in the horizontal direction of the substantial middle of the short transverse that is arranged on refrigerating plant main body 77, horizontally extending two dividing plate 99a, 99b (supporting pallet) are fixed on this central authorities' crossbearer 84, utilize these two dividing plate 99a, 99b that the inside of refrigerating plant main body 77 is separated and are upper and lower section.In addition, at the sidepiece of refrigerating plant main body 77, be provided with the state that is erected at vertically extending framework above the central crossbearer 84 horizontally extending above crossbearer 85a, 85b.
In the epimere chamber 86 of the epimere that is formed at the refrigerating plant main body 77 that separates by dividing plate 99a, 99b (epimere portion), except that being provided with above-mentioned Denso case 78, also be provided with plate heat exchanger 62a, 62b.These two plate heat exchanger 62a, 62b with mounting, be bearing in dividing plate 99a, 99b state via support plate 87a, 87b (in Fig. 5, support plate 87a is not shown) be fixed on top crossbearer 85a, the 85b that is arranged at sidepiece, and be fixedly mounted on the refrigerating plant main body 77 with the state that does not rock on vertical direction and the horizontal direction.
At this, consider: this equipment heavier than other equipment of plate heat exchanger 62a, 62b is being arranged under the situation of epimere chamber 86, compare with the situation that plate heat exchanger 62a, 62b is arranged on hypomere chamber 92 (hypomere portion), the center of gravity of refrigerating plant main body 77 is moved upward, refrigerating plant main body 77 self stable destroyed.Given this, in the present embodiment, plate heat exchanger 62a, 62b are on the basis of the weight balancing of having considered refrigerating plant main body 77 integral body and be configured in epimere chamber 86.Promptly, plate heat exchanger 62a is fixed on the front face side of the top crossbearer 85a of a sidepiece that is disposed at refrigerating plant main body 77, and under the relative state that is provided with distance, plate heat exchanger 62b is fixed on the rear side of the top crossbearer 85b that is disposed at the other side with this plate heat exchanger 62a.Thus, in epimere chamber 86, can prevent that plate heat exchanger 62a, 62b are biased, thereby can prevent the centre-of gravity shift of refrigerating plant main body 77, can guarantee the stability of refrigerating plant main body.Thus, especially, when refrigerating plant main body 77 is transported to the place that should be provided with and when being arranged on vibrationproof pallet 70, refrigerating plant 12 is moved under stable status, make the operation facilitation.
Aqueous medium pipe arrangement 61 and refrigerating plant side refrigerant piping 14B and this two plate heat exchanger 62a, 62b are connected, and at first, the structure of aqueous medium pipe arrangement 61 are described.
As shown in Figure 6, the bottom of plate 82 is formed with aqueous medium pipe arrangement through hole 88a, the 88b that aqueous medium pipe arrangement 61 connects overleaf, and aqueous medium pipe arrangement 61 runs through these two aqueous medium pipe arrangements through hole 88a, 88b.When connecting, aqueous medium pipe arrangement 61 contacts with the periphery of aqueous medium pipe arrangement with through hole 88a, 88b, becomes the state of these two aqueous medium pipe arrangements with the periphery of through hole 88a, 88b that be bearing in.At this, aqueous medium pipe arrangement 61 is the pipe arrangement that aqueous medium flows, and has adopted the pipe bigger and heavy than refrigerant piping 14 diameters, still, by with the aqueous medium pipe arrangement with the bottom that through hole 88a, 88b are formed on backplate 82, can alleviate the load that is applied to backplate 82 by aqueous medium pipe arrangement 61.
In the present embodiment, flow into the inflow side aqueous medium pipe arrangement 89 that the aqueous medium of plate heat exchanger 62a, 62b flows and connect the aqueous medium pipe arrangement through hole 88a of two aqueous medium pipe arrangements, the aqueous medium pipe arrangement through hole 88b on outflow side aqueous medium pipe arrangement 90 perforation right sides among Fig. 6 that the aqueous medium that flows out from plate heat exchanger 62a, 62b flows with left side among the Fig. 6 among through hole 88a, the 88b.
As shown in Figure 6, after the distance of the inflow side aqueous medium pipe arrangement 89 91 horizontal-extendings regulation below refrigerating plant main body 77 that imports to refrigerating plant main body 77 with through hole 88a via the aqueous medium pipe arrangement, branch point a1 branch into pipe arrangement that the aqueous medium that flows into plate heat exchanger 62a flows and, flow into the pipe arrangement that the aqueous medium of plate heat exchanger 62b flows, each pipe arrangement after the branch is connected with connecting portion a2, the a3 on the top that is respectively formed at plate heat exchanger 62a, 62b.At this moment, as Fig. 5 and shown in Figure 6, each pipe arrangement does not extend to the position higher than connecting portion a2, a3.The inflow side aqueous medium pipe arrangement 89 as connecting pipings that promptly, is connected with plate heat exchanger 62a, 62b is not positioned at the position higher than the top of plate heat exchanger 62a, 62b.
As present embodiment, be provided with side by side with respect to aqueous medium pipe arrangement 61 in the refrigerating plant 12 of plate heat exchanger 62a, 62b, require to flow into to plate heat exchanger 62a, 62b respectively the aqueous medium of equal flow.For this reason, need regulate to guarantee longly as far as possible, make the aqueous medium of equal flow flow into plate heat exchanger 62a, 62b respectively to the distance of plate heat exchanger 62a, 62b from the branch point of aqueous medium pipe arrangement 61.In the present embodiment, as mentioned above,, therefore, can guarantee the branch point a1 of hypomere chamber 92 and be arranged at the connecting portion a2 of plate heat exchanger 62a, the 62b of epimere chamber 86, the distance of a3 because plate heat exchanger 62a, 62b are arranged on the epimere chamber.Therefore, after hypomere chamber 92 is with inflow side aqueous medium pipe arrangement 89 branches, under the state of guaranteeing long distance, can will form roughly linearity to shape from branch point with the inflow side aqueous medium pipe arrangement 89 of the connecting portion of plate heat exchanger 62a, 62b.Thus, by making 61 coilings of aqueous medium pipe arrangement be " memorial archway " shape, need not to guarantee that the length of inflow side aqueous medium pipe arrangement 89 is elongated, the position that can get rid of air trapping in aqueous medium pipe arrangement 89 paths, inflow side, do not need to be used for the operation of exhaust that air is extracted out, maintenance, maintainability improve.
Particularly, in the present embodiment, be that inflow side aqueous medium pipe arrangement 89 is not the structure of extending to the position higher than connecting portion a2, the a3 of plate heat exchanger 62a, 62b for the pipe arrangement of shunting.Therefore,, do not need inflow side aqueous medium pipe arrangement 89 is connected with connecting portion a2, a3, can prevent that air trapping from forming the part of " memorial archway " shape in inflow side aqueous medium pipe arrangement 89 by inflow side aqueous medium pipe arrangement 89 is formed " memorial archway " shape.
In addition, in the present embodiment, plate heat exchanger 62a, 62b are arranged on epimere chamber 86, guarantee to have living space in hypomere chamber 92 thus.And, by being concentrated, the pipe arrangement of confessions such as inflow side aqueous medium pipe arrangement 89 shunting is arranged on hypomere chamber 92, can effectively utilize this space.
In addition, as Fig. 5 and shown in Figure 6, after the outflow side aqueous medium pipe arrangement 90 that the aqueous medium that flows out from plate heat exchanger 62a, 62b flows is derived from connecting portion a4 (Fig. 5), the connecting portion a5 (Fig. 6) of the bottom that is formed at plate heat exchanger 62a, 62b, assigned position in the hypomere chamber 92 of guaranteeing the space, collaborate at junction of two streams a6 (Fig. 5), along following 91 after the aqueous medium pipe arrangement extends the distance of regulation with through hole 88b approximate horizontal ground, pass the aqueous medium pipe arrangement and derive to the outside of refrigerating plant main body 77 with through hole 88b.At this, in the present embodiment, because plate heat exchanger 62a, 62b are arranged on epimere chamber 86 and guarantee that in hypomere chamber 92 big space is arranged, therefore, in order to make outflow side aqueous medium pipe arrangement 90 interflow, make outflow side aqueous medium pipe arrangement 90 coiling and can not extend, can effectively utilize the space of hypomere chamber 92 and outflow side aqueous medium pipe arrangement 90 is collaborated swimmingly to the position of regulation.
At this, the outflow side aqueous medium pipe arrangement 90 as connecting pipings that is connected with plate heat exchanger 62a, 62b is also same with inflow side aqueous medium pipe arrangement 89, is not positioned at the position higher than plate heat exchanger 62a, 62b.According to this structure, same with inflow side aqueous medium pipe arrangement 89, by outflow side aqueous medium pipe arrangement 90 is formed " memorial archway " shape, do not need outflow side aqueous medium pipe arrangement 90 is connected with connecting portion a4, a5, can prevent that air trapping from forming the part of " memorial archway " shape in outflow side aqueous medium pipe arrangement 90.
Fig. 7 is to the aqueous medium pipe arrangement figure of through hole 88b along the position that following 91 approximate horizontal are extended from the outflow side aqueous medium pipe arrangement 90 that the top is seen, Fig. 8 is the VIII-VIII profile of Fig. 7, and Fig. 9 is the figure of the situation of outflow side aqueous medium pipe arrangement 90 that following flow switch 93 is installed in seen from the front.
As shown in Figures 7 and 8, near from junction of two streams a6, the diameter H3 of the outflow side aqueous medium pipe arrangement 90 in downstream is bigger and form than the diameter H4 of the outflow side aqueous medium pipe arrangement 90 of the upstream of junction of two streams a6.Thus, at junction of two streams a6 interflow, the aqueous medium that capacity increases flows in outflow side aqueous medium pipe arrangement 90 swimmingly.In addition, as shown in Figures 7 and 8, the perforation that forms the big diameter of diameter group H3 connects with the state that is bearing in aqueous medium pipe arrangement usefulness through hole 88b with pipe arrangement 90b, and is screwed into the state of this perforation usefulness pipe arrangement 90b for the front end of outflow side aqueous medium pipe arrangement 90.According to this structure, operating personnel etc. are screwed into the operation of this perforation with pipe arrangement 90b by the front end with outflow side aqueous medium pipe arrangement 90, can easily outflow side aqueous medium pipe arrangement 90 be derived to the outside of refrigerating plant main body 77.
As Fig. 5, Fig. 7 and shown in Figure 8, the position of extending along following 91 approximate horizontal ground in outflow side aqueous medium pipe arrangement 90 is provided with vane type flow switch 93.This flow switch 93 is judged the switch whether aqueous medium in the pipe arrangement freezes for whether flowing in outflow side aqueous medium pipe arrangement 90 by the detection aqueous medium, as Fig. 7 and shown in Figure 9, possesses the blades 94 that extend in the oriented outflow side aqueous medium pipe arrangement 90.Aqueous medium is in the aqueous medium pipe arrangement 90 of outflow side between flow periods, aqueous medium and 94 collisions of this blade, thus, the side displacement that blade 94 flows to aqueous medium, the not shown contact that is arranged on flow switch 93 is connected with blade 94, and the control of this signal to Denso case 78 is sent with electronic equipment.
Flow switch 93 seamlessly is screwed into the screw thread mouth 90a that is installed in the top that is arranged at outflow side aqueous medium pipe arrangement 90, can prevent that aqueous medium from sewing from the installation position of flow switch 93.In addition, blade 94 is seen by the front and forms the roughly thin member of rectangle (Fig. 9) that this blade 94 extends to vertical lower, reliably with the aqueous medium collision of flowing in pipe arrangement in outflow side aqueous medium pipe arrangement 90.In addition, the blade 94 of Fig. 9 be shaped as an example, can suitably change shape and length according to purposes.
At this, under the situation that flow switch 93 is worked accurately, preferred blade 94 vertically is provided with respect to the flow direction of aqueous medium.In the present embodiment, as mentioned above, because flow switch 93 is arranged on the outflow side aqueous medium pipe arrangement 90 of approximate horizontal extension, therefore, the direction of the aqueous medium that flows in pipe and along with blade 94 quadratures of gravity to the vertical lower extension can make vane type flow switch 93 precision work well.
In addition, in the present embodiment, as mentioned above, plate heat exchanger 62a, 62b are arranged on epimere chamber 86, thus, guarantee the space in hypomere chamber 92, and be provided with flow switch 93 in the hypomere chamber 92 of guaranteeing to have living space.Therefore, can effectively utilize the space to carry out the maintenance of flow switch 93, maintenance, improve maintenance, the maintainability of flow switch 93.
In addition, utilize plate heat exchanger 62a, 62b and supercooled aqueous medium freeze from the aqueous medium pipe arrangement 61 of the side that flows out from plate heat exchanger 62a, 62b be outflow side aqueous medium pipe arrangement 90 successively.Given this, in the present embodiment, on flow switch 93 being arranged in the aqueous medium pipe arrangement 61 outflow side aqueous medium pipe arrangement 90 especially and under the aqueous medium situation about freezing, utilize flow switch 93, can promptly detect this and freeze.
In addition, constituting of refrigerating plant 12: the aqueous medium in the aqueous medium pipe arrangement 61 freezes and does not flow in pipe, and under the situation that the aqueous medium in utilizing flow switch 93 detector tubes freezes, the work of refrigerating plant 12 is instantaneous to be stopped.Constitute according to this, can prevent aqueous medium aqueous medium pipe arrangement 61 under the frozen state refrigerating plant 12 can prevent to damage aqueous medium pipe arrangement 61 and be used to make the mobile pump (not shown) of aqueous medium etc. still in work.
In addition, as mentioned above, the refrigerating plant 12 of present embodiment and off-premises station 11 are set up in parallel on vibrationproof pallet 70, and the vibration that takes place along with the running of off-premises station 11 can be delivered to refrigerating plant 12.At this, flow switch 93 detects the device whether aqueous medium flows for the displacement by blade 94, in order to improve accuracy of detection, requires as far as possible not to blade 94 transmitting vibrations.Given this, in the present embodiment, as Fig. 5, Fig. 7 and shown in Figure 8, bearing support 91a (Fig. 5, Fig. 8) is fixed on following 91, this bearing support 91a is provided with and is used for outflow side aqueous medium pipe arrangement 90 and the fixing anchor clamps 95 of bearing support 91a, and near the outflow side aqueous medium pipe arrangement 90 these anchor clamps 95 is provided with flow switch 93.Thus, the positions of fixing in outflow side aqueous medium pipe arrangement 90, by anchor clamps 95 that can suppress to vibrate are provided with flow switch 93, can suppress to realize the raising of the accuracy of detection of flow switch 93, can correctly detect flowing of aqueous medium substantially to flow switch 93 transmitting vibrations.
Near the anchor clamps of symbol 95b for being used at the aqueous medium pipe arrangement outflow side aqueous medium pipe arrangement 90 being fixed with respect to following 91 with through hole 88b.
Below, the structure of refrigerating plant side refrigerant piping 14B is described.
As shown in Figure 6, be formed with the refrigerant piping through hole 81a, the 81b that are used for refrigerating plant side refrigerant piping 14B perforation overleaf on the plate 82, refrigerant piping 14 connects refrigerant pipings through hole 81a, 81b (in the lump with reference to Fig. 3).When connecting, refrigerating plant side refrigerant piping 14B contacts with the periphery of refrigerant piping with through hole 81a, 81b, becomes the state of these two refrigerant pipings with the periphery of through hole 81a, 81b that be bearing in.
As shown in Figure 6, the refrigerating plant side refrigerant piping 14B that the perforation refrigerant piping is imported refrigerating plant main body 77 with through hole 81a is connected with the motor-driven valve 60 that is arranged on front face side in hypomere chamber 92 after following approximate horizontal extension.As mentioned above, this motor-driven valve 60 is the valve of the flow that is used to be controlled at the cold-producing medium that flows in the refrigerating plant side refrigerant piping 14B, 78 interior controls are connected with electronic equipment and can carry out signal communication with the Denso case to utilize the illustrated distribution of omission, control its open and-shut mode by this control with electronic equipment.
As Fig. 5 and shown in Figure 6, this motor-driven valve 60 is configured in the below of Denso case 78.This Denso case 78 is wound with heat insulation material 96 and constitutes, so that the Temperature Influence of the outside of Denso case 78 is not as far as possible to being installed in inner electronic equipment transmission.Therefore, prevent that outside temperature from passing to electronic equipment and the harmful effect that brings, and utilize heat insulation material 96, prevent that the surface temperature of Denso case 78 is extremely low with respect to the temperature around the Denso case 78, prevent the surface of dew attached to Denso case 78.In the present embodiment and since prevent the water-clogged Denso case 78 of dewfall below dispose motor-driven valve 60, therefore, this Denso case 78 becomes top cover and prevents that refrigerating plant main body 77 in the dew of generation is dropped on the motor-driven valve 60.Particularly, in order to prevent dew to motor-driven valve 60 drippage, and the special top cover with the mechanism that is used to prevent dew that is provided with, and utilize the equipment of both having deposited to prevent the drippage of above-mentioned dew, therefore, realized the cost reduction.
In addition, it is near that the physical distance of motor-driven valve 60 and the Denso case 78 that is connected with these motor-driven valve 60 distributions becomes, and can shorten the distance of the distribution between motor-driven valve 60 and the Denso case 78, realizes that cost reduces, and can prevent the loose of distribution, can prevent that the state of distribution from becoming complicated.
From branch point b1 (Fig. 5) branch of refrigerating plant side refrigerant piping 14B during guaranteeing the hypomere chamber 92 in space that motor-driven valve 60 is derived, each pipe arrangement after the branch is connected with connecting portion b2 (Fig. 6), the connecting portion b3 (Fig. 5) of the bottom that is formed at plate heat exchanger 62a, 62b respectively.In the present embodiment, as mentioned above, because plate heat exchanger 62a, 62b are arranged on epimere chamber 86, therefore, can utilize the space that is formed at hypomere chamber 92, flow at the cold-producing medium that will be flowing in refrigerating plant side refrigerant piping 14B is maintained under adjustable state, directly with refrigerating plant side refrigerant piping 14B branch.On the other hand, with the connecting portion b4 (Fig. 5) of plate heat exchanger 62a, 62b, refrigerating plant side refrigerant piping 14B that connecting portion b5 (Fig. 6) is connected behind branch point b6 (Fig. 5) interflow, extend with through hole 81b to refrigerant piping.And refrigerating plant side refrigerant piping 14B is also same with aqueous medium pipe arrangement 61, and centralized configuration is in the space that is formed at hypomere chamber 92, and not to extending than high position, the top of plate heat exchanger 62a, 62b.
As mentioned above, in the present embodiment, vane type flow switch 93 is set, utilizes this flow switch 93 to detect freezing of aqueous medium in aqueous medium pipe arrangements 61 in the inside of refrigerating plant main body 77.At this, under the situation that flow switch 93 precision are worked well, preferred blade 94 vertically is provided with respect to the flow direction of aqueous medium.In the present embodiment, because flow switch 93 is arranged on the outflow side aqueous medium pipe arrangement 90 of approximate horizontal extension, therefore, the direction of the aqueous medium that flows in pipe and along with blade 94 quadratures of gravity to the vertical lower extension can make vane type flow switch 93 precision work well.In addition, in the present embodiment, as mentioned above, plate heat exchanger 62a, 62b are arranged on epimere chamber 86, thus, guarantee to have living space in hypomere chamber 92, and guaranteeing have the hypomere chamber 92 in this space to be provided with flow switch 93.Therefore, can effectively utilize the space to carry out the maintenance of flow switch 93, maintenance, improve maintenance, the maintainability of flow switch 93.
In addition, in the present embodiment, at outflow side aqueous medium pipe arrangement 90, be provided for outflow side aqueous medium pipe arrangement 90 with respect to following 91 fixing anchor clamps 95 at the position of extending along following 91 approximate horizontal, and near the outflow side aqueous medium pipe arrangement 90 these anchor clamps 95 is provided with flow switch 93.Thus, in outflow side aqueous medium pipe arrangement 90, fixing by anchor clamps 95 and position that can suppress to vibrate is provided with flow switch 93, can suppress to realize the raising of the accuracy of detection of flow switch 93, can correctly detect flowing of aqueous medium substantially to flow switch 93 transmitting vibrations.
In addition, in the present embodiment, plate heat exchanger 62a, 62b are fixed on top crossbearer 85a, the 85b via support plate 87a, 87b (in Fig. 5, support plate 87a is not shown) with mounting, the state that is bearing in dividing plate 99a, 99b (supporting pallet).Therefore, plate heat exchanger 62a, 62b are fixedly mounted on the refrigerating plant main body 77 with the state that does not rock on vertical direction and the horizontal direction.
In addition, in the present embodiment, plate heat exchanger 62a, 62b are on the basis of the weight balancing of having considered refrigerating plant main body 77 integral body and be configured in epimere chamber 86.Promptly, plate heat exchanger 62a is fixed on the front face side of the top crossbearer 85a of a sidepiece that is disposed at refrigerating plant main body 77, and under the state relative, plate heat exchanger 62b is fixed on the rear side of the top crossbearer 85b that is disposed at the other side with this plate heat exchanger 62a.Thus, in epimere chamber 86, can prevent that plate heat exchanger 62a, 62b are biased, thereby can prevent the centre-of gravity shift of refrigerating plant main body 77, can guarantee the stability of refrigerating plant main body.Thus, especially, when refrigerating plant main body 77 is transported to the place that should be provided with and when being arranged on vibrationproof pallet 70, can make refrigerating plant 12, make the operation facilitation moving under the stable status.
(second embodiment)
In the first above-mentioned embodiment, the refrigerating plant 12 that possesses two motor-driven valves and two plate heat exchangers is illustrated, but in the present embodiment, the refrigerating plant 12 that possesses three motor-driven valves and three plate heat exchangers is described.
In addition, in description of the present embodiment, the element annotation prosign to identical with the inscape of first embodiment omits its explanation.
Figure 10 is the refrigerant loop figure of the refrigerating plant that possesses refrigerating plant 12 10 of present embodiment.
As shown in figure 10, the refrigerating plant 12 of present embodiment is set up in parallel three motor-driven valves 60 with respect to refrigerating plant side refrigerant piping 14B.In addition, three plate heat exchanger 62c, 62d, 62e are set up in parallel with respect to refrigerating plant side refrigerant piping 14B and aqueous medium pipe arrangement 61.Compare with first embodiment, can generate jumbo cold water or warm water.
Particularly, inflow side aqueous medium pipe arrangement 89 is after branch point c1 branch, and the pipe arrangement after the branch is connected with connecting portion c3, the connecting portion c4 of plate heat exchanger 62e of connecting portion c2, the plate heat exchanger 62d of plate heat exchanger 62c respectively.In addition, the outflow side aqueous medium pipe arrangement 90 that is connected with the connecting portion c7 of connecting portion c6, the plate heat exchanger 62e of connecting portion c5, the plate heat exchanger 62d of plate heat exchanger 62c is connected with junction of two streams c8, derives to the outside of refrigerating plant 12.
In addition, the refrigerating plant side refrigerant piping 14B that is connected with motor-driven valve 60 is after branch point d1 branch, and the pipe arrangement after the branch is connected with the connecting portion d2 of plate heat exchanger 62c, the connecting portion d4 of plate heat exchanger 62d respectively.In addition, the refrigerating plant side refrigerant piping 14B that is connected with the connecting portion d7 of connecting portion d6, the plate heat exchanger 62e of connecting portion d5, the plate heat exchanger 62d of plate heat exchanger 62c is at branch point d8 interflow, and is connected with outdoor refrigerant pipe arrangement 14A.
Figure 11 is the stereogram of the refrigerating plant main body 77 seen from a side that disposes above-mentioned Denso case 78, and Figure 12 is the stereogram that never disposes the refrigerating plant main body 77 that a side of Denso case 78 sees.In addition, the refrigerating plant 12 of present embodiment and off-premises station 11 are configured on the vibrationproof pallet 70 (with reference to Fig. 2 and Fig. 3) side by side, side is provided with Denso case 78 in front, therefore, same with first embodiment, the operating personnel can be simultaneously and easily near the Denso case 74 of off-premises station 11 and the Denso case 78 of refrigerating plant 12.
As Figure 11 and shown in Figure 12, in the present embodiment, also plate heat exchanger 62c, 62d, 62e all are configured in epimere chamber 86.And, these plate heat exchangers 62c, 62d, 62e with mounting, be fixed under the state of dividing plate 99a via bearing support 98 and firmly fix up on crossbearer 85a, the 85b.In addition, in the present embodiment, flow switch 93 is not set.
Present embodiment also can access the effect same with first embodiment.Particularly, the branch point of inflow side aqueous medium pipe arrangement 89 is arranged on hypomere chamber 92, inflow side aqueous medium pipe arrangement 89 after the branch guaranteeing under the state of distance respectively, is connected with connecting portion c2, c3, the c4 on the top of plate heat exchanger 62c, 62d, 62e with rectilinear form roughly.Therefore, flow into respectively at the aqueous medium that is adjustable as equal flow under the state of plate heat exchanger 62c, 62d, 62e, can get rid of the position of air trapping in the path of aqueous medium pipe arrangement 61.Therefore, do not need to be used for exhaust operation that air is extracted out, can realize keeping in repair, the raising of maintainability.In addition, because three motor-driven valves 60 are configured in the below of Denso case 78, therefore, this device of both having deposited is that Denso case 78 becomes top cover, prevents that dew is to motor-driven valve 60 drippages.
In addition, above-mentioned embodiment is represented a kind of form of the present invention all the time, within the scope of the invention, can be out of shape arbitrarily and use.
For example, in two above-mentioned embodiments, with the refrigerating plant 12 that possesses two or three plate heat exchangers is that example describes the present invention, but the quantity of plate heat exchanger is not limited to this, can be according to the capacity setting of cold water that should generate or warm water suitable quantity.
In addition, in the present embodiment, be that example is illustrated with refrigerating plant main body 77 by the situation that dividing plate 99a divides into epimere chamber 86 and hypomere chamber 92, but may not divide into epimere chamber 86 and hypomere chamber 92.That is, as long as plate heat exchanger 62 is arranged on epimere in the refrigerating plant main body 77.
In addition, off-premises station and refrigerating plant (refrigerating plant main body) respectively are provided with one in the above-described embodiment, but might not be defined as one, also can be provided with many respectively.Below, many (three) refrigerating plants are described with the embodiment that an off-premises station is connected.
(the 3rd embodiment)
Figure 13 is the formation schematic diagram of refrigeration system 101a of the water pipe arrangement 114 that possesses a plurality of systems of expression third embodiment of the invention.
As shown in the drawing, refrigeration system 101a possesses off-premises station 110, three refrigerating plant 111a, 111b, 111c connects with respect to off-premises station 110 side by side via the refrigerant piping 128 of a system.In addition, refrigeration system 101a possesses the first system water pipe arrangement 112 and two such system water pipe arrangements 114 of the second system water pipe arrangement 113.In addition, in Figure 13, become the refrigerant loop of the state of refrigerating plant 111a, 111b, 111c generation cold water, the following description also describes the refrigeration system 101a of this state.
As shown in figure 13, off-premises station 110 possesses: accumulator 115, and it is separated into gas and liquid with cold-producing medium, only gas is derived; Compressor 116, it makes the cold-producing medium that sucks from this accumulator 115 become HTHP and derives; Cross valve 117, it is connected with this compressor 116, changes refrigerant loop by running that generates cold water and the running that generates warm water; Outdoor heat converter 118, it carries out heat exchange between cold-producing medium that compressor 116 is derived and air, with cold-producing medium liquefaction and derive.In addition, off-premises station 110 possesses display part 119, and it is used to show current pattern, reaches the various information of setting as the temperature of the cold water that generates such as design temperature.
In addition, off-premises station 110 possesses the outer control part 120 of having family, each equipment that its control off-premises station 110 is possessed.This outdoor control part 120 can be connected with following refrigeration control part 121a, 121b, 121c communicatedly via order wire 122, and these control parts carry out Collaborative Control to the integral body of adjusting of for example gear of the driving of compressor 116 etc., refrigeration system 101a.
On the other hand, refrigerating plant 111a possesses: open and close valve 252a, and its open and close controlling cold-producing medium by valve is to the importing of refrigerating plant 111a or end; Expansion valve 126a, its cold-producing medium that outdoor heat converter 118 is derived reduces pressure and becomes the liquid of low-temp low-pressure; Plate heat exchanger 127a, it imports the cold-producing medium that this expansion valve 126a derives.Refrigerant piping 128 is connected with this plate heat exchanger 127a with water pipe arrangement 114, carries out heat exchange between the aqueous medium that flows in cold-producing medium that flows and the water pipe arrangement 114 and generate cold water (warm water is warm water when generating) in refrigerant piping 128.Water pipe arrangement 114 possesses: the outflow side water pipe arrangement 114b that the inflow side water pipe arrangement 114a that the aqueous medium of inflow plate heat exchanger 127a flows, the aqueous medium that flows out from plate heat exchanger 127a flow.In addition, in the outside of refrigerating plant 111a, inflow side water pipe arrangement 114a is provided with first pump 130 that is used to make aqueous medium to flow in water pipe arrangement 114.In addition, the form about water pipe arrangement 114 describes in detail thereafter.
Near the outlet of the aqueous medium of plate heat exchanger 127a outflow side water pipe arrangement 114b is provided with the aqueous medium temperature sensor 131a of the temperature that is used to detect aqueous medium.In addition, near the outflow side water pipe arrangement 114b the outlet of the aqueous medium of plate heat exchanger 127a is provided with flow switch 132a, and it is used to detect aqueous medium and whether flows in the water pipe arrangement 114b of outflow side.
In addition, refrigerating plant 111a possesses refrigeration control part 121a, each equipment that its control refrigerating plant 111a has.This refrigeration control part 121a can be connected communicatedly with the first above-mentioned pump 130, under the control of refrigeration control part 121a or under the control of the outdoor control part 120 that is connected with the control part 121a that freezes via order wire 122, carry out the driving of first pump 130 beginning, stop.
In addition, refrigeration control part 121a can be connected communicatedly with above-mentioned aqueous medium temperature sensor 131a, and refrigeration control part 121a detects from the temperature of the aqueous medium of plate heat exchanger 127a outflow based on the output valve of aqueous medium temperature sensor 131a.Particularly, refrigeration control part 121a compares by the temperature of the aqueous medium that will detect and the supposition temperature of freezing of aqueous medium, and can detect aqueous medium has the possibility of not freezing.In addition, in the present embodiment, aqueous medium temperature sensor 131a is arranged on the outlet side of plate heat exchanger 127a.At this, the aqueous medium that freezes the side that flows out since plate heat exchanger 127a of supercooled aqueous medium begins successively by plate heat exchanger 127a, but because aqueous medium temperature sensor 131a is arranged on the outlet side of plate heat exchanger 127a, therefore, can detect freezing of aqueous medium rapidly.
In addition, refrigeration control part 121a can be connected communicatedly with above-mentioned flow switch 132a, and whether refrigeration control part 121a can flow in water pipe arrangement 114 based on the signal detection aqueous medium from flow switch 132a input.
The refrigeration control part 121a of present embodiment can detect based on the output valve of flow switch 132a and take place on first pump 130 unusually.Particularly, under the situation that indication first pump 130 drives, under the situation that aqueous medium does not freeze,, therefore, should detect aqueous medium by flow switch 132a and flow because aqueous medium does not freeze in water pipe arrangement 114 and flow.In above-mentioned situation, detecting by flow switch 132a under the immobilising situation of aqueous medium, barrier, other reasons have taken place on first pump 130 unusually for some reason, and thus, aqueous medium is the possibility height of proper flow not.In view of the above, refrigeration control part 121a is under the situation that 130 indications drive to first pump, do not detecting freezing of aqueous medium by aqueous medium temperature sensor 131a and detecting aqueous medium in water pipe arrangement 114 under the immobilising situation by flow switch 132a, be judged to be on first pump 130, taken place unusual.
In addition, in the following description, " the flow switch 132a of refrigerating plant 111a detects the unusual of first pump 130 " meaning is meant, under the situation of the order of first pump 130 being sent driving, although the aqueous medium temperature sensor 131a by refrigerating plant 111a does not detect freezing of aqueous medium, detect the immobilising state of aqueous medium by flow switch 132a.
Refrigerating plant 111b has the structure roughly the same with refrigerating plant 111a, and possessing has: refrigeration control part 121b, open and close valve 252b, expansion valve 126b, plate heat exchanger 127b, aqueous medium temperature sensor 131b, flow switch 132b.
Refrigerating plant 111c has the structure roughly the same with refrigerating plant 111a, and possessing has: refrigeration control part 121c, open and close valve 252c, expansion valve 126c, plate heat exchanger 127c, aqueous medium temperature sensor 131c, flow switch 132c.
At this, as shown in figure 13, the structure of the refrigeration system 101a of present embodiment is as follows: as water pipe arrangement 114 the first system water pipe arrangement 112 and the second system water pipe arrangement, 113 these two systems are arranged, on the first system water pipe arrangement 112, refrigerating plant 111a and refrigerating plant 111b connect side by side with respect to this first system water pipe arrangement 112, and refrigerating plant 111c is connected with the second system water pipe arrangement 113.The first system water pipe arrangement 112 is provided with above-mentioned first pump, 130, the second system water pipe arrangements 113 and is provided with the second above-mentioned pump 135.
Like this, in possessing the refrigeration system 101a of a plurality of system water pipe arrangements 114, detect first pump 130 or second pump 135 when unusual at arbitrary flow switch 132a, 132b, the 132c of refrigerating plant 111a, 111b, 111c, require the driving of off-premises station 110 and the driving of all first, second pumps 130,135 to stop.It is the reasons are as follows.
Promptly, suppose to detect under the unusual situation of second pump 135 at the flow switch 132c of the refrigerating plant 111c that is connected with the second system water pipe arrangement 113, the driving that must carry out off-premises station 110 stops, and the driving of second pump 135 stop.Reason is, detecting second pump 135 when unusual, cause not proper flow in the second system water pipe arrangement 113 of aqueous medium thus, under this state, continue to drive off-premises station 110 and driving under the situation of second pump 135, may cause that the excessive cooling of the aqueous medium among the plate heat exchanger 127c causes freeze, and the damage of second pump 135 that freezes to cause of aqueous medium and the second system water pipe arrangement 113 etc.Thereby, detect under the unusual situation of second pump 135 at the flow switch 132c of refrigerating plant 111c, stop by the driving that makes off-premises station 110, the driving that reaches second pump 135, and prevent that second pump, 135 grades from further damaging, and need to wait for the operating personnel finds out the unusual reason of second pump 135.
On the other hand, even arbitrary flow switch detects the unusual situation of first pump 130 among flow switch 132a, the 132b of the refrigerating plant 111a, the 111b that are connected with the first system water pipe arrangement 112, the driving of the off-premises station 110 and first pump 130 can not stopped yet, can guarantee security.Reason is, under this situation, owing to do not assure first pump, 130 driven by detecting first pump, 130 unusual flow switches, therefore, considered following state: though aqueous medium normal circulation in the first system water pipe arrangement 112 detects unusual flow switch and self misoperation taken place.Therefore, under situation as refrigerating plant 111a, 111b with the connection arranged side by side of a plurality of refrigerating plants with respect to a water pipe arrangement, even arbitrary flow switch of refrigerating plant detects the unusual situation of pump, do not need off-premises station 110 and pump are stopped yet, flow switch at ownership device for cooling detects under the unusual situation of pump, just off-premises station 110 and pump need be stopped.
Like this, in refrigeration system 101a, detect second pump 135 when unusual at flow switch 132c, the driving of off-premises station 110 and first, second pump 130,135 need be stopped, but arbitrary flow switch detects first pump 130 when unusual in flow switch 132a, 132b, does not need the driving of off-premises station 110 and first, second pump 130,135 is stopped.At this, because therefore the water pipe arrangement 114 that refrigeration system 101a has a plurality of systems, compares the connection status complexity of water pipe arrangement 114 with the situation of the water pipe arrangement 114 that has only a system.Therefore, the manager of refrigeration system 101a and operating personnel etc. sometimes can not be on top of detect pump at which flow switch and off-premises station and pump need be stopped when unusual, in addition, which flow switch detecting pump at does not stop off-premises station 110 and pump also passable when unusual.In this refrigeration system 101a, at flow switch 132a, 132b, arbitrary flow switch detects first pump 130 or second pump 135 when unusual among the 132c, with its for example according to which flow switch 132a, 132b, 132c detects pump stops off-premises station 110 or non-stop processing unusually, be not so good as for the time being with whole off-premises station 110 and first, second pump 130,135 driving stops, thus, bother after preventing, and, confirm the connection status of water pipe arrangement 114 and eliminate after pump unusual by the operating personnel, indication based on the operating personnel, the driving of the pump that carries out off-premises station 110 and need like this, can be guaranteed security.This situation is not limited to refrigeration system 101a, for possess with respect to off-premises station be set up in parallel the refrigeration system of a plurality of refrigerating plants, the refrigeration system that promptly has a plurality of system water pipe arrangements too.
Given this, in the present embodiment, a plurality of refrigerating plants connect via refrigerant piping side by side with respect to off-premises station, and can use first function to the refrigeration system that possesses a plurality of system water pipe arrangements.This first function is following function: in the flow switch that a plurality of refrigerating plants of refrigeration system possess, arbitrary flow switch detects pump when unusual, the driving of off-premises station and pump is stopped.Therefore, under the situation of the refrigeration system 101a that first function is applied to present embodiment, arbitrary flow switch detects first pump 130 or second pump 135 when unusual among flow switch 132a, the 132b of refrigerating plant 111a, 111b, 111c, the 132c, the driving of off-premises station 110 and first, second pump 130,135 is stopped, as mentioned above, can drive refrigeration system 101a the most safely.
Then, the flow chart that utilizes Figure 14 describes the action of the refrigeration system 101a that uses first function.
The outdoor control part 120 of off-premises station 110 transmits control signal to refrigeration control part 121a, 121b, the 121c that can communicate to connect via order wire 122, and arbitrary flow switch among flow switch 132a, the 132b of these refrigeration control part 121a, 121b, 121c control, the 132c is detected first pump 130 or whether unusually second pump 135 monitors (step SA1).Arbitrary flow switch detects under the unusual situation of first pump 130 or second pump 135 (step SA1:YES) in flow switch 132a, 132b, 132c, outdoor control part 120 is by the driving of control compressor 116, the running of off-premises station 110 is stopped (step SA2), and the driving with first, second pump 130,135 stops (step SA3) again.Then, outdoor control part 120 has detected abnormal show at display part 119 with which switch among flow switch 132a, 132b, the 132c, and the demonstration that the driving of off-premises station 110 and first, second pump 130,135 stops to be presented at display part 119 (step SA4).Thus, the operating personnel can be easily and the driving of promptly discerning off-premises station 110 and first, second pump 130,135 stop, and can be easily and promptly discern taken place on which pump in first, second pump 130,135 unusual, based on this identification, place under repair efficiently, other operation.
Figure 15 is the figure of the variation of expression the 3rd embodiment shown in Figure 13, is the formation schematic diagram of refrigeration system 101b that possesses the water pipe arrangement 114 of a system.In addition, in Figure 15, about the key element identical with inscape shown in Figure 13, the mark prosign omits its explanation.
As shown in figure 15, refrigeration system 101b is different with refrigeration system 101a, possesses the such water pipe arrangement 114 that has only a system of the 3rd system water pipe arrangement 137, and refrigerating plant 111a, 111b, 111c connect side by side with respect to the 3rd system water pipe arrangement 137.The 3rd system water pipe arrangement 137 is provided with the 3rd pump 136 that is used to make aqueous medium to flow in pipe arrangement.
Like this, in possessing the refrigeration system 101b of a system water pipe arrangement 114 only, not that all but wherein a switch detects under the unusual situation of the 3rd pump 136 in flow switch 132a, the 132b of the refrigerating plant 111a, the 111b that are connected with the 3rd system water pipe arrangement 137,111c, 132c, even the driving with off-premises station 110 and the 3rd pump 136 does not stop, also can guarantee to make refrigeration system 101b running under the state of security.Reason is, under this situation, owing to do not assure that by detecting the 3rd pump 136 unusual flow switches the 3rd pump 136 normally drives, therefore, considered following state: aqueous medium is normal circulation in the 3rd system water pipe arrangement 137, self misoperation has taken place but detect unusual flow switch.Thereby, as mentioned above, under the situation that a plurality of refrigerating plants connect side by side with respect to the water pipe arrangement of a system, even arbitrary flow switch of refrigerating plant detects the unusual situation of pump, off-premises station 110 and pump can not stopped yet, also can thus, can improve the behavior in service of refrigeration system guaranteeing to make the refrigeration system running under the state of security.On the other hand, detect under the unusual situation of the 3rd pump 136 at all refrigerating plant 111a, 111b, whole flow switch 132a of 111c, 132b, 132c,, in fact unusual possibility height has taken place about the 3rd pump 136, therefore, the 3rd pump 136 need be stopped.
And, in refrigeration system 101b, possess the water pipe arrangement 114 of the such system of the 3rd system water pipe arrangement 137.Under this situation, compare with the refrigeration system 101a of the water pipe arrangement 114 that possesses a plurality of systems, the connection status of water pipe arrangement 114 is simple, and operating personnel etc. can grasp the connection status of water pipe arrangement 114 reliably.Therefore, in refrigeration system 101b, even arbitrary switch detects the unusual situation of the 3rd pump 136 among flow switch 132a, 132b, the 132c, also can be the driving of off-premises station 110 and the 3rd pump 136 be stopped ground and grasp the state that to guarantee security reliably.Therefore, in the refrigeration system 101b of the water pipe arrangement 114 that possesses a system,, do not need the driving of off-premises station 110 and the 3rd pump 136 is stopped even arbitrary switch detects the unusual situation of the 3rd pump 136 among flow switch 132a, 132b, the 132c yet.
At this, utilize Figure 16 to respect to off-premises station 110 via refrigerant piping 128 be connected with the refrigeration system of a plurality of refrigerating plants side by side, another the routine refrigeration system 101c that has a refrigeration system of a system water pipe arrangement describes.In addition, in Figure 16, for Figure 13, the identical key element of inscape shown in Figure 15, the mark prosign omits its explanation.
As shown in figure 16, refrigeration system 101c possesses the such water pipe arrangement 114 that has only a system of Quaternary system system water pipe arrangement 138, and refrigerating plant 111a, 111b, 111c are connected in series with respect to this Quaternary system system water pipe arrangement 138.That is, refrigeration system 101c is connected in series with respect to water pipe arrangement 114 on this aspect at refrigerating plant 111a, 111b, 111c, and is different with respect to the refrigeration system 101b that water pipe arrangement 114 connects side by side with refrigerating plant 111a, 111b, 111c.In possessing the refrigeration system 101c of this structure, also basis and the same reason of refrigeration system 101b, even arbitrary switch detects the unusual situation of the 3rd pump 136 among flow switch 132a, 132b, the 132c, also can be the driving of off-premises station 110 and the 3rd pump 136 be stopped ground and grasp the state that to guarantee security reliably.Therefore, even arbitrary switch detects the unusual situation of the 3rd pump 136 among flow switch 132a, 132b, the 132c, do not need the driving of off-premises station 110 and the 3rd pump 136 is stopped yet.
Given this, in the present embodiment, a plurality of refrigerating plants connect via refrigerant piping side by side with respect to off-premises station, and can use second function to the refrigeration system that possesses a system water pipe arrangement.This second function is following function: in the flow switch that a plurality of refrigerating plants of refrigeration system possess, be not all but wherein arbitrary flow switch detects pump the driving of off-premises station and pump is not stopped when unusual, but detect pump when unusual at whole flow switches, just the driving with off-premises station and pump stops.As mentioned above, when the water pipe arrangement was a system, even the arbitrary switch in a plurality of flow switch detects the unusual situation of pump, the operating personnel can not grasp the state that can guarantee security with the driving of off-premises station and pump with stopping reliably yet, therefore, can use second function effectively.This second function is applied under the situation of refrigeration system 101b of present embodiment, arbitrary flow switch detects the 3rd pump 136 when unusual in by flow switch 132a, the 132b of refrigerating plant 111a, 111b, 111c, 132c, under the state of having guaranteed security, proceed the driving of off-premises station and the 3rd pump 136; Detect the 3rd pump 136 when unusual at all flow switch 132a, 132b, 132c, the driving of off-premises station 110 and the 3rd pump 136 is stopped.
Then, the flow chart that utilizes Figure 17 describes the action of the refrigeration system 101b that uses second function.
The outdoor control part 120 of off-premises station 110 transmits control signal to refrigeration control part 121a, 121b, the 121c that can communicate to connect via order wire 122, and to arbitrary switch among flow switch 132a, the 132b of these refrigeration control part 121a, 121b, 121c control, the 132c or all switch detect the 3rd pump 136 and whether unusually monitor (step SB1).In flow switch 132a, 132b, 132c arbitrary switch or all switch detect under the unusual situation (step SB1:YES) of the 3rd pump 136, outdoor control part 120 couples of whole flow switch 132a, 132b, 132c detect the 3rd pump 136 and whether unusually judge (step SB2).All flow switch 132a, 132b, 132c do not detect under the unusual situation (step SB2:NO) of the 3rd pump 136, outdoor control part 120 has detected abnormal show at display part 119 with which flow switch among flow switch 132a, 132b, the 132c on display part 119, and the content that will keep the driving of off-premises station 110 and the 3rd pump 136 is presented at display part 119 (step SB3).Thus, the operating personnel can be easily and is promptly discerned and detect the unusual flow switch of the 3rd pump 136 among flow switch 132a, 132b, the 132c, and driven off-premises station 110 and the 3rd pump 136 under its state, based on its identification, can confirm the operations such as action of flow switch.After display part 119 showed, outdoor control part 120 returned order to step SB1.Therefore, even arbitrary flow switch detects the unusual situation of the 3rd pump 136 among flow switch 132a, 132b, the 132c, do not detect under the unusual situation of the 3rd pump 136 at all flow switch 132a, 132b, 132c, the driving of off-premises station 110 and the 3rd pump 136 does not stop yet.
On the other hand, detect under the unusual situation (step SB2:YES) of the 3rd pump 136 at all flow switch 132a, 132b, 132c, outdoor control part 120 is by the driving of control compressor 116, the running of off-premises station 110 is stopped (step SB4), and the driving with the 3rd pump 136 stops (step SB5) again.Then, outdoor control part 120 detects whole flow switch 132a, 132b, 132c unusual result, and the result that the driving of off-premises station 110 and the 3rd pump 136 has stopped being presented at display part 119 (step SB6).Thus, the operating personnel can be easily and is promptly discerned the result that the driving with off-premises station 110 and the 3rd pump 136 has stopped, and can be easily and identification promptly whether on the 3rd pump 136, taken place unusually, based on this identification, can carry out operation efficiently.
In the present embodiment, the outdoor control part 120 of off-premises station 110 possesses the 3rd function, and it still is that a plurality of system water pipe arrangements 114 switch first function and second function according to possessing a system.Particularly, the circuit substrate that outdoor control part 120 possesses is provided with switch 120a such as dual-in-line switch, the operating personnel is by this switch of operation 120a, possess the water pipe arrangement 114 that a system still is a multisystem according to refrigeration system, can select a ground easily and select to use first function or use second function.Outdoor control part 120 possesses: first program, and it carries out first function shown in Figure 14; Second program, it carries out second function shown in Figure 17, when having selected first function by switch 120a, carries out first program, when having selected second function by switch 120a, carries out second program.
At this, it still is a plurality of systems that water pipe arrangement 114 is set at a system, when each equipment of refrigeration system dispatches from the factory, can not judge, and become corresponding on-the-spot operation, but according to present embodiment, actual at the scene be provided with water pipe arrangement 114 after, the operating personnel can be a systematization or a plurality of system according to its water pipe arrangement 114 that has been provided with, utilizes the 3rd function, easily first function and second function is switched, therefore, can carry out the operation that is provided with of refrigeration system easily.
For example, be under the situation of a plurality of systems at water pipe arrangement as refrigeration system 101a, operating personnel's console switch 120a selects first function.So, the action of first function shown in the flow chart of outdoor control part 120 and the refrigeration control part 121a that is connected with this outdoor control part 120,121b, 121c execution Figure 14.Again for example, when as refrigeration system 101b and refrigeration system 101c a system water pipe arrangement 114 being set, operating personnel's console switch 120a selects second function.So, the action of second function shown in the flow chart of outdoor control part 120 and the refrigeration control part 121a that is connected with this outdoor control part 120,121b, 121c execution Figure 17.
In addition, the refrigeration control part 121a of the outdoor control part 120 of off-premises station 110 and refrigerating plant 111a, 111b, 111c, the collaborative control of carrying out refrigeration system integral body of 121b, 121c as mentioned above, can connect via order wire 122 each other communicatedly.In the present embodiment, because outdoor control part 120 is provided with the 3rd function, therefore, utilizing the 3rd function to select a ground the operating personnel selects under the situation of first function or second function, via this order wire of both having deposited 122 refrigeration control part 121a, 121b, the 121c of control signal to each refrigerating plant 111a, 111b, 111c sent, based on this control signal, each freeze control part 121a, 121b, 121c carry out the action corresponding to first function or second function.Therefore,, be not used to be provided with the constructions such as electric wiring of new order wire between control part 121a, 121b, the 121c, can carry out the operation that is provided with of refrigeration system easily and need and not freeze at outdoor control part 120 because first function or second function are carried out.In addition, owing to can utilize the 3rd function of the outdoor control part 120 that is arranged at off-premises station 110 that first function and second function are switched, therefore, even the situation that the structure of refrigeration system is changed (for example, change to the situation of the water pipe arrangement 114 of a plurality of systems from the water pipe arrangement 114 of a system) or the situation of constructing refrigeration system again, the operating personnel also can only utilize the 3rd function that is arranged on outdoor control part 120 easily first function and second function to be switched.
As mentioned above, in the present embodiment, possess: first function, it is applied to possess the refrigeration system 101a of a plurality of system water pipe arrangements 114, when arbitrary flow switch is worked in flow switch 132a, 132b, 132c, off-premises station 110 is stopped; Second function, it is applied to possess the refrigeration system 101b of a system water pipe arrangement 114, when whole flow switches of flow switch 132a, 132b, 132c are worked, off-premises station 110 is stopped, and can select a ground and select the outdoor control part 120 of the 3rd function setting of this first function and second function at off-premises station 110.Therefore, the operating personnel can be a plurality of systems or be a system according to water pipe arrangement 114 at the scene after being provided with water pipe arrangement 114, utilizes the 3rd function to select a ground enough easily and selects to use first function or use second function.At this, it still is that a plurality of systems can not judge when each equipment of refrigeration system dispatches from the factory that water pipe arrangement 114 is set at a system, and become corresponding on-the-spot operation, but according to present embodiment, can be at the scene be a system or be a plurality of systems according to water pipe arrangement 114, utilize the 3rd function that first function and second function are switched, therefore, can carry out the operation that is provided with of refrigeration system easily.
In addition, in the present embodiment, owing to be provided with the 3rd function at outdoor control part 120, therefore, utilizing the 3rd function to select a ground the operating personnel selects under the situation of first function or second function, via this order wire of both having deposited 122 refrigeration control part 121a, 121b, the 121c of control signal to each refrigerating plant 111a, 111b, 111c sent, based on this control signal, each freeze control part 121a, 121b, 121c carry out the action corresponding to first function or second function.Therefore, in order to carry out first function or second function, need and not freeze at outdoor control part 120 is used to be provided with the constructions such as electric wiring of new order wire between control part 121a, 121b, the 121c, can carry out the operation that is provided with of refrigeration system easily.In addition, owing to can utilize the 3rd function of the outdoor control part 120 that is arranged at off-premises station 110 that first function and second function are switched, therefore, even the situation that the structure of refrigeration system is changed (for example, change to the situation of the water pipe arrangement 114 of a plurality of systems from the water pipe arrangement 114 of a system) or the situation of constructing refrigeration system again, the operating personnel also can only utilize the 3rd function that is arranged on outdoor control part 120 easily first function and second function to be switched.
In addition, above-mentioned embodiment is represented a form of the present invention all the time, within the scope of the invention, can at random be out of shape and use.
For example, in the above-described embodiment, utilize the dual-in-line switch that is arranged at circuit substrate first function and second function can be switched, but switching mode is not limited to this.For example, possess at off-premises station 110 under the situation of the operating portion that is used to carry out various settings such as pattern setting, also can utilize this operating portion that first function and second function are switched, in addition, also the terminal of outdoor control part 120 with personal computer etc. can be connected communicatedly, by operating the terminal of this connection, and first function and second function are switched.
In addition,, refrigeration system 101a, 101b, 101c are represented and be illustrated, but the structure of refrigeration system is not limited to this, in the function of the condition that is provided with of refrigeration system and requirement, can have various structures as the example of refrigeration system.
(the 4th embodiment)
Figure 18 is the schematic diagram of structure of the air-conditioner 201 of expression the 4th embodiment, and it is provided with two straight swollen indoor sets and constitutes to replace two refrigerating plants shown in Figure 15.As shown in the drawing, air-conditioner 201 possesses off-premises station 210, two straight swollen indoor set 211a, 211b and is connected side by side with respect to this off-premises station 210 via refrigerant piping 209 with refrigerating plant 212.In addition, among Figure 18, become straight swollen indoor set 211a, 211b and carry out the refrigerant loop that cooling operation and refrigerating plant 212 generates the state of cold water, below the air-conditioner 201 of this state is described.
As shown in figure 18, off-premises station 201 possesses: accumulator 215, and it is separated into gas and liquid with cold-producing medium, only gas is derived; Compressor 216, it makes the cold-producing medium that sucks from this accumulator 215 become HTHP and derivation; Cross valve 217, it is connected with this compressor 216, changes refrigerant loop by cooling operation with heating to turn round; Outdoor heat converter 218, it carries out heat exchange between cold-producing medium that compressor 216 is derived and air, with cold-producing medium liquefaction and derive.This outdoor heat converter 218 possesses fin 219, realizes the raising of the heat exchanger effectiveness of cold-producing medium and air by this fin 219.
In addition, off-premises station 210 possesses outdoor control part 220, each equipment that its control off-premises station 210 is possessed.This outdoor control part 220 can be connected communicatedly with following refrigeration control part 221a, 221b, refrigerating plant 212, and these control parts carry out Collaborative Control to adjusting of for example gear of the driving of compressor 216 etc., air-conditioner 201 integral body.
Straight swollen indoor set 211a possesses: open and close valve 232a, and its open and close controlling cold-producing medium by valve is to the importing of straight swollen indoor set 211a or end; Expansion valve 224a, its cold-producing medium that outdoor heat converter 218 is derived reduces pressure into the liquid of low-temp low-pressure; Indoor heat converter 225a, its cold-producing medium that this expansion valve 224a is derived evaporates with the temperature of regulation and air is cooled off.As shown in figure 18, this indoor heat converter 225a possesses fin 226a, realizes the raising of the heat exchanger effectiveness of cold-producing medium and air by this fin 226a.In addition, straight swollen indoor set 211a possesses open and close valve 232a, and when heating running, open and close valve 232a work is for example by the importing of cold-producing medium to straight swollen indoor set 211a.
Near indoor heat converter 225a, be provided with the indoor refrigerant temperature sensors 227a, the 228a that are used to detect refrigerant temperature, utilize this indoor refrigerant temperature sensors 227a, 228a, can detect the temperature of the cold-producing medium that imports indoor heat converter 225a.
In addition, straight swollen indoor set 211a possesses indoor control part 221a, and it controls each equipment that straight swollen indoor set 211a possesses.This indoor control part 221a can be connected communicatedly with above-mentioned indoor refrigerant temperature sensors 227a, 228a, and indoor control part 221a detects the temperature of the cold-producing medium that imports indoor heat converter 225a based on the output valve of indoor refrigerant temperature sensors 227a, 228a.In addition, as mentioned above, indoor control part 221a can be connected communicatedly with outdoor control part 220, indoor control part 221a can be with the signal of the temperature of the expression cold-producing medium that detect to outdoor control part 220 outputs, will represents that maybe the signal of state of the open and-shut mode etc. self of open and close valve 232a is exported to outdoor control part 220.
In addition, indoor control part 221a possesses the 229a of timing portion, and various timing actions are carried out in its reference clock pulse that generates based on not shown oscillator.
At this, straight swollen indoor set 211a possesses fin 226a, and when cooling operation, under the situation that the condensed water attached to this fin 226a has frozen, this condensed water that freezes hinders in fin 226a flow air, hinders the good heat exchange of efficient.For preventing this situation, the indoor control part 221a of present embodiment carries out following control.Promptly, the following control of indoor control part 221a: for temperature by the detected cold-producing medium of indoor refrigerant temperature sensors 228a, may produce icing temperature (in the present embodiment at condensed water, " 2 ℃ ") following state continuance 10 minutes the time, being set under the situation that this state continues again condensed water may produce and freeze, expansion valve 224a is set at the state of closing and the importing of cold-producing medium is ended (below, expansion valve 224a is set at the state of closing and the action that the importing of cold-producing medium ends is called " thermal cut-out "), further cool off attached to the condensed water of fin 226a preventing, prevent freezing of condensed water.In addition, in the following description, the function that straight swollen indoor set 211a carries out thermal cut-out in the time of will reaching the temperature that condensed water produce to freeze in the temperature of cold-producing medium is called " first function ".
Like this, straight swollen indoor set 211a in first function when preventing that freezing of condensed water from judging that thermal cut-out whether, not only judge the temperature of cold-producing medium, and whether the temperature of judging cold-producing medium continued official hour, and it is based on following reason, promptly, only with the temperature of cold-producing medium carry out thermal cut-out judgement situation (for example, at cold-producing medium is the situation of carrying out thermal cut-out below 2 ℃ the time) under, though can prevent freezing of condensed water reliably,, there is the frequent problem that takes place of thermal cut-out.Its reason is, what straight swollen indoor set 211a was set is blended the in different size of chamber, in addition, also carries out its each change by the user owing to be blended the design temperature of chamber, and therefore, such air conditioner load tails off to the chance that straight swollen indoor set 211a sharply increases.In addition, under the situation that air conditioner load has increased, rise by driving gear, and increase the amount of the cold-producing medium that imports straight swollen indoor set 211a the compressor 216 of off-premises station 210, but this moment, instantaneous sometimes the reaching below 2 ℃ of temperature of the cold-producing medium of importing indoor heat converter 225a.In addition, as long as big with respect to the burden requirement of off-premises station 210 refrigerating plants 212 that connect arranged side by side, even the load of then straight swollen indoor set 211a is little, the internal circulating load of cold-producing medium also can increase.Under this situation, a large amount of cold-producing mediums flow into straight swollen indoor set, import instantaneous sometimes the reaching below 2 ℃ of temperature of the cold-producing medium of indoor heat converter 225a.
Given this, in the present embodiment, even the temperature of cold-producing medium is the state below 2 ℃, under the also lasting situation more than 10 minutes of this state, it is extremely low that condensed water reaches icing possibility, therefore, and under the temperature of cold-producing medium is state below 2 ℃, only under the situation that has continued 10 minutes, carry out thermal cut-out, thus, prevent that condensed water from freezing, and prevent the frequent generation of thermal cut-out, realized air-conditioning smoothly.
Straight swollen indoor set 211b has the roughly the same structure with straight swollen indoor set 211a, possesses indoor control part 221b, open and close valve 232b, expansion valve 224b, indoor heat converter 225b, fin 226b, indoor refrigerant temperature sensors 228b etc.
On the other hand, refrigerating plant 212 possesses: open and close valve 302, and its open and close controlling cold-producing medium by valve is to the importing of refrigerating plant 212 or end; Expansion valve 231, its cold-producing medium that outdoor heat converter 218 is derived reduces pressure into the liquid of low-temp low-pressure; Plate heat exchanger 232, it carries out heat exchange and generates cold water (heat under the situation of running at straight swollen indoor set, be warm water) between cold-producing medium that this expansion valve 231 is derived and water; Water pipe arrangement 235, the loop pipe 234 that outlet pipe 233 that it aqueous medium that possesses this plate heat exchanger 232 of inflow flows and the aqueous medium that flows out from plate heat exchanger 232 flow.The outlet of this water pipe arrangement 235 pipe 233 is provided with and is used to make aqueous medium mobile circulating pump 236 water pipe arrangement 235 in.This circulating pump 236 can be connected communicatedly with refrigeration control part 222 (following), under the control of refrigeration control part 222, or with the control of the outdoor control part 220 that is connected of refrigeration control part 222 under, carry out its driving beginning, stop.In addition, refrigerating plant 212 possesses open and close valve 302 is arranged, and open and close valve 302 is worked and for example ended the importing of cold-producing medium to refrigerating plant 212 when heating running.
In addition, near plate heat exchanger 232, be provided with the refrigerant temperature sensors 237,238 that is used to detect refrigerant temperature, utilize this refrigerant temperature sensors 237,238, can detect the temperature of the cold-producing medium that imports plate heat exchanger 232.In addition, near plate heat exchanger 232, be provided with the aqueous medium temperature sensor 239,240 that is used to detect the aqueous medium temperature, utilize this aqueous medium temperature sensor 239,240, can detect from the temperature of the aqueous medium of plate heat exchanger 232 outflows.In addition, be provided with heat-exchanger temperature sensor 241, utilize this heat-exchanger temperature sensor 241, can detect the temperature on the surface of plate heat exchanger 232 on the surface of plate heat exchanger 232.
In addition, refrigerating plant 212 possesses refrigeration control part 222, each equipment that its control refrigerating plant 212 is possessed.This refrigeration control part 222 and above-mentioned refrigerant temperature sensors 237,238, aqueous medium temperature sensor 239,240, and the credible signal communication of each sensor ground of heat-exchanger temperature sensor 241 be connected, indoor control part 221a is based on the output valve of each sensor, the temperature of the aqueous medium that detect the temperature of the cold-producing medium that imports plate heat exchanger 232, flows out from plate heat exchanger 232, and the temperature on the surface of plate heat exchanger 232.In addition, as mentioned above, refrigeration control part 222 can be connected communicatedly with outdoor control part 220, refrigeration control part 222 can with the signal of the temperature of the detected cold-producing medium of expression, and the signal of the state of the open and-shut mode etc. self of expression open and close valve 302 send to outdoor control part 220.
In addition, refrigeration control part 222 possesses timing portion 242, and various timing actions are carried out in its reference clock pulse that generates based on not shown oscillator.
At this, refrigerating plant 212 is different with straight swollen indoor set 211a, 211b, possesses water pipe arrangement 235.And, under the situation that refrigerating plant turns round continuously under aqueous medium sub-cooled that flows and the frozen state, might damage water pipe arrangement 235 and circulating pump 236 when generating cold water, in water pipe arrangement 235.In order to prevent this situation, the refrigeration control part 222 of present embodiment is at the first condition that satisfies following explanation, second condition, when reaching in three conditions of the 3rd condition arbitrary condition, carry out heat and turn-off, prevent that thus aqueous medium from freezing, prevent to damage water pipe arrangement 235 and circulating pump 236.
Promptly, refrigeration control part 222 since the temperature by aqueous medium temperature sensor 239,240 detected aqueous mediums be the temperature that possible freeze (in the present embodiment, be " 2 ℃ ") when following (first condition), when aqueous medium is cooled again, aqueous medium just might carry out freezing, therefore, carries out thermal cut-out, stop the further cooling of aqueous medium, to prevent the freezing of water medium.In addition, in the present embodiment, aqueous medium temperature sensor 240 is arranged on the outlet side of plate heat exchanger 232.At this, supercooled aqueous medium freezes from the aqueous medium of the side that flows out from plate heat exchanger 232 successively by plate heat exchanger 232, but because aqueous medium temperature sensor 240 is arranged on the outlet side of plate heat exchanger 232, therefore, can promptly detect freezing of aqueous medium.
In addition, refrigeration control part 222 is owing to be that aqueous medium produces the temperature freezed (in the present embodiment in the temperature by heat-exchanger temperature sensor 241 detected plate heat exchangers 232, be " 2 ℃ ") when following (second condition), may cause freezing of the aqueous medium that in plate heat exchanger 232, is cooled, therefore, carry out thermal cut-out, stop the further cooling of aqueous medium, to prevent freezing of water medium.In addition, in the following description, will be based on above-mentioned first condition and second condition and reach the function of carrying out thermal cut-out when aqueous medium produces the temperature of freezing (freezing supposition temperature) in the temperature of the temperature of aqueous medium or heat exchanger and be called second function.
In addition, on the basis of above-mentioned condition, the refrigeration control part 222 with the same condition of straight swollen indoor set 211a, 211b under, promptly the temperature of the cold-producing medium that detects in refrigerant temperature sensors 237,238 is that aqueous medium produces the temperature freezed (in the present embodiment, being " 2 ℃ ") following state continues down also to carry out thermal cut-out under the situation (the 3rd condition) more than 10 minutes.That is, refrigerating plant 212 also possesses the first above-mentioned function.Like this, refrigeration control part 222 is that the condition of the temperature of first condition, plate heat exchanger 232 is in the 3rd condition of temperature of second condition and cold-producing medium during arbitrary condition in the condition of the temperature that satisfies aqueous medium, judge by carrying out heat, prevent freezing of aqueous medium.
At this, in the present embodiment,, used i.e. the 3rd condition of the condition identical with straight swollen indoor set 211a, 211b about the condition of the temperature of cold-producing medium, thus, can realize following effect.
Promptly, do not exist at hypothesis straight swollen indoor set 211a, 211b, under off-premises station 210 and refrigerating plant 212 the situation with the refrigerating plant that is connected one to one, the temperature that can be applied in cold-producing medium reaches and causes temperature that aqueous medium freezes (for example really, subzero 10 ℃) time carry out the condition (below, claim " assumed condition ") of thermal cut-out to replace the 3rd condition.As long as this condition of application can prevent that aqueous medium is owing to the temperature of cold-producing medium is freezed.But, as described in present embodiment, in straight swollen indoor set 211a, 211b and air-conditioner 201 that refrigerating plant 212 is connected side by side with respect to off-premises station 110, because the state of the air conditioner load of straight swollen indoor set 211a, 211b reaches, the state of heat unlatching/thermal cut-out, taken place that the temperature of cold-producing medium of many refrigerating plants 212 is instantaneous to reach the subzero state of affairs below 10 ℃, using under the above-mentioned situation of assumed condition, produce all phenomenons of thermal cut-out of each refrigerating plant 212 as the condition of the temperature of cold-producing medium.
Particularly, inferior in the situation that straight swollen indoor set 211a is set the design temperature more much bigger than the Current Temperatures that is blended the chamber that is provided with straight swollen indoor set 211a, under the control of indoor control part 221a and outdoor control part 220, the driving gear of compressor 216 rises, and a large amount of cold-producing mediums imports the indoor heat converter 225a of straight swollen indoor set 211a.At this moment, also the refrigerating plant 212 that connects side by side with respect to off-premises station 210 is imported cold-producing medium in large quantities, the temperature of the cold-producing medium of refrigerating plant 212 is instantaneous sometimes to reach subzero below 10 ℃.In addition, reached in the temperature that is blended the chamber that is provided with straight swollen indoor set 211a under the situation of design temperature of regulation, and situation about cooling operation being stopped according to user's indication etc. under, straight swollen indoor set 211a is by carrying out thermal cut-out, further cooling operation is stopped, but in this case, the predetermined refrigerant that imports straight swollen indoor set 211a will import to the refrigerating plant 212 that is connected side by side with off-premises station 210, and the temperature of the cold-producing medium of refrigerating plant 212 is instantaneous sometimes to reach subzero below 10 ℃.
Given this, in the present embodiment, the temperature of the cold-producing medium of refrigerating plant 212 reaches subzero below 10 ℃ because of the state of straight swollen indoor set 211a, 211b is instantaneous, straight swollen indoor set 211a, 211b carry out thermal cut-out continually, in order to prevent the above-mentioned state of affairs, with regard to the condition of the temperature of cold-producing medium, application be not above-mentioned assumed condition, but with the 3rd identical condition of condition that is applied to straight swollen indoor set 211a, 211b.As mentioned above, in straight swollen indoor set 211a, 211b, by using the 3rd condition, prevent freezing of condensed water, but because condensed water and aqueous medium are all water, reaching the temperature of freezing or freezing does not have difference, therefore, can use the 3rd condition as preventing the condition that aqueous medium freezes, to replace the condition of freezing of condensed water effectively.In addition, as mentioned above, in straight swollen indoor set 211a, 211b, in the 3rd condition, not only judge the temperature of cold-producing medium, and whether the temperature of judging cold-producing medium has continued official hour, thus, prevent frequent thermal cut-out, but in refrigerating plant 212, by using the 3rd condition, can prevent to take place continually thermal cut-out equally.
In addition, the refrigerating plant 212 of the air-conditioner 201 of present embodiment possesses the extraneous gas temperature sensor 245 that is used to measure the extraneous gas temperature.This extraneous gas temperature sensor 245 can be connected communicatedly with refrigeration control part 222, and refrigeration control part 222 can detect the temperature of extraneous gas based on the output valve of extraneous gas temperature sensor 245.And, in the temperature of the extraneous gas that is detected by this extraneous gas temperature sensor 245 is that the temperature freezed of the aqueous medium generation water pipe arrangement 235 in is (in the present embodiment, " 2 ℃ ") and refrigerating plant 212 does not turn round, when circulating pump 236 does not drive, refrigeration control part 222 sends to circulating pump 236 and drives signal, the driving of beginning circulating pump 236.Thus, aqueous medium flows in water pipe arrangement 235, can prevent the freezing of aqueous medium in the water pipe arrangement 235 that extraneous gas causes.In addition, in the above description, in will stopping in the running of refrigerating plant 212, when externally the temperature of gas reaches aqueous medium and produces the temperature freeze, the function of the driving of beginning circulating pump 236 is called " the 3rd function ".
The action of the refrigerating plant 212 when then, utilizing the flow chart of Figure 19 that cold water is generated describes.
At first, in step SC1,222 pairs of following contents of the refrigeration control part of refrigerating plant 212 are judged: in refrigerating plant 212 runnings now whether, promptly, drive circulating pump 236 and make the aqueous medium circulation whether generate cold water.Refrigerating plant 212 be not the running in situation (step SC1:NO) under, refrigeration control part 222 judges that based on the output valve of extraneous gas temperature sensor 245 the aqueous mediums whether temperature of extraneous gas is lower than in the water pipe arrangement 235 produce the temperature of freezing (in the present embodiment, " 2 ℃ ") (step SC2).When externally the temperature of gas is not less than 2 ℃ (step SC2:NO), refrigeration control part 222 returns processing sequence to step SC1.When externally the temperature of gas is lower than 2 ℃ (step SC2:YES), refrigeration control part 222 freezes for the aqueous medium in the water pipe arrangement 235 that prevents extraneous gas and cause, will drive signal and send to circulating pump 236, begins the driving (step SC3) of circulating pump 236.Thereafter, refrigeration control part 222 monitors that the temperature of extraneous gas is lower than 2 ℃ whether (step SC4), when externally the temperature of gas is higher than 2 ℃ (step SC4:NO), the driving of circulating pump 236 is stopped (step SC10).After the driving of circulating pump 236 stopped, refrigeration control part 222 returned processing sequence to step SC1.
On the other hand, in step SC1, under the situation (step SC1:YES) in refrigerating plant 212 runnings, 222 pairs of following contents of refrigeration control part are judged: whether satisfy above-mentioned first condition, promptly, the temperature of aqueous medium reaches the temperature (in the present embodiment, " 2 ℃ ") that may freeze whether (step SC6).When the temperature of aqueous medium is lower than 2 ℃ (step SC6:YES), in order to prevent freezing of aqueous medium, refrigeration control part 222 moves processing sequence to step SC7.When the temperature of aqueous medium is not less than 2 ℃ (step SC6:NO), 222 pairs of following contents of refrigeration control part are judged: whether satisfy second condition, promptly, the temperature of plate heat exchanger 232 is lower than aqueous medium and produces the temperature (in the present embodiment, " 2 ℃ ") freeze whether (step SC8).When the temperature of plate heat exchanger 232 is lower than 2 ℃ (step SC8:YES), in order to prevent freezing of aqueous medium, refrigeration control part 222 moves processing sequence to step SC7.When the temperature of plate heat exchanger 232 is not less than 2 ℃ (step SC8:NO), 222 pairs of following contents of refrigeration control part are judged: whether satisfy the 3rd condition, promptly, the temperature of cold-producing medium be lower than aqueous medium produce the temperature (in the present embodiment, " 2 ℃ ") freeze state continuance 10 minutes whether (step SC9).Be lower than in the temperature of cold-producing medium 2 ℃ state continuance under 10 minutes the situation (step SC9:YES), in order to prevent freezing of aqueous medium, refrigeration control part 222 moves processing sequence to step SC7.Be lower than under the situation (step SC9:NO) that 2 ℃ state do not continue 10 minutes in the temperature of cold-producing medium, refrigeration control part 222 returns processing sequence to step SC1, judges freezing of aqueous medium once more.
In step SC7, refrigeration control part 222 carries out thermal cut-out in order to prevent freezing of aqueous medium, stops aqueous medium and further cools off, and prevents freezing of aqueous medium.Therefore and refrigeration control part 222 damages circulating pump 236 and water pipe arrangement 235 in order to prevent circulating pump 236 from turning round under the state that aqueous medium freezes, and the driving of pump is stopped (step SC10).Thereafter, refrigeration control part 222 will represent that the signal of driving condition of temperature, the circulating pump 236 of temperature, the cold-producing medium of temperature, the plate heat exchanger of aqueous medium exports to outdoor control part 220.Outdoor control part 220 can carry out the driving of compressor 216 and the control of straight swollen indoor set 211a, 211b based on this signal.
Then, whether refrigeration control part 222 monitors the state of can heat opening by monitoring following item: promptly, whether do not satisfy three conditions of first, second and third condition, particularly, the temperature of the aqueous medium temperature that is higher than 2 ℃ and plate heat exchanger 232 temperature that is higher than 2 ℃ and cold-producing medium is higher than 2 ℃ whether (step SC12).When being the state of can heat opening (step SC12:YES), refrigeration control part 222 carries out heat and opens (step SC13), and begins the driving (step SC14) of circulating pump 236, begins the generation of cold water once more.And refrigeration control part 222 will represent that the signal of content of driving condition of temperature, the circulating pump 236 of temperature, the cold-producing medium of temperature, the plate heat exchanger of aqueous medium exports to outdoor control part 220.Outdoor control part 220 can carry out the driving of compressor 216 and the control of straight swollen indoor set 211a, 211b based on this signal.
As mentioned above, according to present embodiment, straight swollen indoor set 211a, 211b possess first function, and promptly, when the temperature of cold-producing medium reaches condensed water and produces the temperature of freezing, straight swollen indoor set 211a, 211b carry out the function of thermal cut-out.And refrigerating plant 212 possesses this first function, and possesses second function, promptly, reach the function of carrying out thermal cut-out when aqueous medium produces the temperature of freezing (freezing to suppose temperature) in the temperature of the temperature of aqueous medium or heat exchanger.
According to this structure, in straight swollen indoor set 211a, 211b, can prevent that condensed water from freezing, can prevent reducing of air quantity, can carry out air-conditioning swimmingly.In addition, prevent condition that condensed water freezes as preventing the condition that aqueous medium freezes, therefore, utilize first function can prevent freezing of in refrigerating plant 212 aqueous medium owing to can effectively use.In addition, utilize second function can prevent freezing of in refrigerating plant 212 aqueous medium.
In addition, in the present embodiment, refrigerating plant 212 possesses the 3rd function, promptly, when the temperature of extraneous gas reaches aqueous medium and produces the temperature freeze in the running of refrigerating plant 212 stops, and the function of the driving of beginning circulating pump 236.Therefore, can prevent that cold water from freezing because of extraneous gas.
In addition, above-mentioned embodiment is just represented a form of the present invention, within the scope of the invention, can at random be out of shape and use.
In the present embodiment, carry out control, and the structure of the judgement of the thermal cut-out of refrigerating plant 212 etc. of circulating pump 236 for refrigeration control part 222, but this also can be by the structure of carrying out with the refrigeration control part 222 outdoor control part 220 that can be connected communicatedly.

Claims (13)

1, a kind of refrigerating plant is characterized in that, possesses: the refrigerating plant main body, and it is connected with freeze cycle; Plate heat exchanger, it is installed in the epimere portion of this refrigerating plant main body, and is divided into a plurality of; The pipe arrangement class, its by the water pipe arrangement of each plate heat exchanger is supplied with in the shunting of cold-producing medium and aqueous medium and refrigerant pipe constitutes and centralized configuration in the hypomere portion of this refrigerating plant main body, outlet side to the described water pipe arrangement of major general is derived along the approximate horizontal ground, bottom of refrigerating plant main body, along the pipe arrangement portion that approximate horizontal is extended flow switch is set at this.
2, refrigerating plant as claimed in claim 1 is characterized in that, the described pipe arrangement portion that approximate horizontal ground extends is fixed on the bottom of described refrigerating plant main body via anchor clamps, and near the described pipe arrangement portion described anchor clamps is provided with described flow switch.
3, refrigerating plant as claimed in claim 1 is characterized in that, described refrigerating plant main body possesses the supporting pallet in the substantial middle portion of short transverse,
Upload at this supporting pallet and to put described plate heat exchanger, utilize support plate this plate heat exchanger to be bearing in the sidepiece of described refrigerating plant main body from the side.
4, refrigerating plant as claimed in claim 1 is characterized in that, described each plate heat exchanger is installed in the relative sidepiece of described refrigerating plant main body, to keep the weight balancing of described refrigerating plant integral body.
5, refrigerating plant as claimed in claim 1 is characterized in that, described flow switch is for having the vane type flow switch of the blade that extends along the direction parallel with the flow direction of described aqueous medium in described pipe arrangement portion.
6, a kind of refrigeration system, it, in addition, will connect with respect to described off-premises station via many refrigerating plants that the aqueous medium pipe arrangement of at least one system is supplied with aqueous medium via refrigerant piping the supply system cryogen side by side from off-premises station, it is characterized in that,
Described a plurality of refrigerating plant has flow switch respectively, and possesses: first mechanism, with situation that a plurality of system water medium pipe arrangements that are divided into a plurality of systems are connected under, when described off-premises station being stopped during arbitrary switch motion in described each flow switch; Second mechanism under described refrigerating plant and situation that the water pipe arrangement of a system is connected, stops described off-premises station when described each switch all moves; Selection mechanism based on the annexation of described refrigerating plant and described aqueous medium pipe arrangement, is selected a ground and is selected in described first mechanism and described second mechanism one.
7, refrigeration system as claimed in claim 6 is characterized in that, described first mechanism, described second mechanism and described selection mechanism are installed on the controller of the described off-premises station of control.
8, refrigeration system as claimed in claim 6, it is characterized in that, the described control part of described off-premises station and each control part of described a plurality of refrigerating plants are connected via order wire, utilize described selection mechanism, when selecting the arbitrary mechanism of described first mechanism and described second mechanism, the described control part of described off-premises station is via the described control device interlock of described order wire and described refrigerating plant and carry out the described mechanism of having selected.
9, a kind of air-conditioner, it possesses: off-premises station; Refrigerating plant, it has the heat exchanger of supplying with aqueous medium from this off-premises station via refrigerant piping the supply system cryogen again via the aqueous medium pipe arrangement; Straight swollen indoor set, it supplies with described cold-producing medium from described off-premises station via described refrigerant piping, and described refrigerating plant is connected with described off-premises station via described refrigerant piping side by side with described straight swollen indoor set, it is characterized in that,
Facility have the first thermal cut-out mechanism in the described straight puff, and when the temperature of the cold-producing medium that flows in described straight swollen indoor set reached the freezing temperature of condensed water, this first thermal cut-out mechanism made this straight swollen indoor set thermal cut-out,
Described refrigerating plant has the second thermal cut-out mechanism, in the temperature of the temperature of the described aqueous medium that in described refrigerating plant, flows, the described cold-producing medium that in described refrigerating plant, flows and the temperature of described heat exchanger arbitrary temperature reach water freeze to suppose temperature the time, this second thermal cut-out mechanism makes this refrigerating plant thermal cut-out.
10, aircondition as claimed in claim 9 is characterized in that, the temperature of described cold-producing medium be below the described freezing temperature state continuance during the stipulated time, the described first thermal cut-out mechanism makes described straight swollen indoor set thermal cut-out.
11, air-conditioner as claimed in claim 9 is characterized in that, the described first thermal cut-out mechanism has the indoor refrigerant temperature sensors of the temperature that is used to detect cold-producing medium.
12, air-conditioner as claimed in claim 9 is characterized in that, the described second thermal cut-out mechanism has: the refrigerating plant refrigerant temperature sensors, and it is used to detect the temperature of cold-producing medium; Refrigerating plant aqueous medium temperature sensor, it is used to detect the temperature of aqueous medium; Heat-exchanger temperature sensor, it is used to detect the surface temperature of described heat exchanger; The extraneous gas temperature sensor, it is used to detect the extraneous gas temperature.
13, air-conditioner as claimed in claim 9 is characterized in that, described air-conditioner also possesses: circulating pump, and it is used for supplying with aqueous medium to described refrigerating plant; Command device, during its running at described refrigerating plant stops, externally the temperature of gas reach water freeze to suppose temperature the time, instruct described circulating pump entry into service.
CN2009101282131A 2008-03-26 2009-03-18 Chiller unit, refrigeration system having chiller unit and air conditioner having chiller unit Expired - Fee Related CN101545700B (en)

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JP079696/08 2008-03-26
JP2008079696A JP2009236339A (en) 2008-03-26 2008-03-26 Chiller unit
JP2008082626A JP2009236392A (en) 2008-03-27 2008-03-27 Air conditioner
JP082626/08 2008-03-27
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JP2008082627A JP5140473B2 (en) 2008-03-27 2008-03-27 Refrigeration system

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CN103534540A (en) * 2011-04-14 2014-01-22 特灵国际有限公司 Water flow measurement device
CN104930739A (en) * 2014-03-20 2015-09-23 海尔集团公司 Fast cooling refrigeration apparatus and method for fasting cooling
CN105783357A (en) * 2014-12-22 2016-07-20 Tcl空调器(中山)有限公司 Water chiller and freezing prevention method and device thereof
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US9273986B2 (en) 2011-04-14 2016-03-01 Trane International Inc. Water flow measurement device
CN103075784A (en) * 2011-10-25 2013-05-01 阿自倍尔株式会社 Surface temperature estimation device, surface temperature estimation method and condensate determination device
CN103075784B (en) * 2011-10-25 2015-12-02 阿自倍尔株式会社 Surface temperature estimating device, surface temperature presuming method and condensation decision maker
CN104930739A (en) * 2014-03-20 2015-09-23 海尔集团公司 Fast cooling refrigeration apparatus and method for fasting cooling
CN104930739B (en) * 2014-03-20 2017-06-20 海尔集团公司 Quick cooling type refrigeration plant and quickly cooling method
CN105783357A (en) * 2014-12-22 2016-07-20 Tcl空调器(中山)有限公司 Water chiller and freezing prevention method and device thereof
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CN107367082A (en) * 2016-03-08 2017-11-21 西克制冷产品有限责任公司 Modular rack for environmental control system

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