EP2110627A2 - Chiller unit - Google Patents
Chiller unit Download PDFInfo
- Publication number
- EP2110627A2 EP2110627A2 EP09004287A EP09004287A EP2110627A2 EP 2110627 A2 EP2110627 A2 EP 2110627A2 EP 09004287 A EP09004287 A EP 09004287A EP 09004287 A EP09004287 A EP 09004287A EP 2110627 A2 EP2110627 A2 EP 2110627A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- chiller unit
- pipe
- main body
- water medium
- chiller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/46—Component arrangements in separate outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/26—Refrigerant piping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/006—General constructional features for mounting refrigerating machinery components
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
Definitions
- the present invention relates to a chiller unit having a heat exchanger for performing heat exchange between refrigerant and water medium.
- a chiller unit having a chiller unit body connected to a refrigeration cycle is generally known (see JP-A-2004-251486 , for example).
- This type of chiller unit is equipped with a plate type heat exchanger for heat-exchanging refrigerant and water medium to generate cold/hot water.
- the chiller unit and an outdoor unit are arranged side by side (juxtaposed with each other) on an earthquake-resistant table.
- a refrigerant pipe extending from the outdoor unit is connected to a refrigerant pipe of the plate type heat exchanger and also a water supply pipe extending from the outside is connected to a water pipe of the plate type heat exchanger on the earthquake-resistant table.
- the lead-out direction of the refrigerant pipe and the water pipe extending from the chiller unit and the lead-out direction of the refrigerant pipe extending from the outdoor unit are not unified (i.e.,. are not disorderly set), but they are disorderly set. Therefore, it has been difficult to perform a connection work for connecting the refrigerant pipe of the chiller unit and the refrigerant pipe of the outdoor unit and a connection work for connecting the water pipe extending from the chiller unit and the water supply pipe extending from the outside.
- an electrically-operated valve for controlling the flow rate of refrigerant is connected to the refrigerant pipe of the chiller unit, and much dew condensation occurs in the plate type heat exchanger and the refrigerant pipe of the chiller unit , so that a shielding member or the like which covers the electrically-operated valve is required to prevent dew condensation water from impinging against the electrically-operated valve.
- the arrangement position of an electrical component box of the chiller unit and the arrangement position of an electrical component box of the outdoor unit are irregular (random). Accordingly, when the outdoor unit and the chiller unit are arranged side by side, the electrical component box of the chiller unit and the electrical component box of the outdoor unit may be arranged to be oriented to different directions. Therefore, when a maintenance work is simultaneously executed on the chiller unit and the outdoor unit, the chiller unit and the outdoor unit cannot be accessed from the same direction, which may disturb the maintenance performance.
- air may be trapped in a water pipe (water medium pipe) which is designed (laid down) like the shape of a Japanese shrine-gate (Shinto's shrine gate) .
- a water pipe water medium pipe
- Japanese shrine-gate Japanese shrine gate
- the present invention has been implemented in view of the foregoing problems, and has an object of the present invention to provide a chiller unit that is disposed at a side of an outdoor unit and enhanced in maintenance performance, and also in which dew condensation water can be prevented from spattering to an electrically-operated valve in the chiller unit.
- the present invention has another object to provide a chiller unit that can be more enhanced in maintenance performance without using any work of releasing air in a water medium pipe.
- a chiller unit having a chiller unit main body comprising: a plate type heat exchanger unit for performing heat exchange between refrigerant supplied from an outdoor unit through a refrigerant pipe and water medium supplied from the outside through a water refrigerant pipe to generate cold or hot water; an electrical component box that includes electronic equipment and is disposed at the front surface side of the chiller unit main body and surrounded by a heat insulating member; and an electrically-operated valve that is disposed below the electrical component box and controls a flow rate of refrigerant flowing through the refrigerant pipe of the chiller unit main body, wherein the refrigerant pipe and the water medium pipe connected to the plate type heat exchanger unit are lead out to the back surface side of the chiller unit main body, and a refrigerant pipe of the chiller unit main body is connectable to the refrigerant pipe from the outdoor unit at the back surface side.
- the outdoor unit and the chiller unit main body are arranged side by side and the width in the depth direction of the chiller unit main body and the width in the width direction of the outdoor unit are set to be substantially equal to each other.
- the chiller unit main body and the outdoor unit are mounted on a vibration-proof table.
- a chiller unit having a chiller unit main body comprising: a housing having an upper stage portion and a lower stage portion; a plate type heat exchanger unit for performing heat exchange between refrigerant supplied from an outdoor unit through a refrigerant pipe and water medium supplied from the outside through a water medium pipe to generate cold or hot water; and a pipe group connected to the refrigerant pipe from the outdoor unit and the water medium pipe from the outside to supply the refrigerant and the water medium to the plate type heat exchanger unit, wherein the pipe group supplies the refrigerant and the water medium to the plate type heat exchanger unit while splitting the flow of each of the refrigerant and the water medium, the pipe group is collectively disposed in the lower stage portion of the chiller unit main body, and the pipe group is connected to the plate type heat exchanger unit so that the pipe group is located to be equal to or lower than the top portion of the plate type heat exchanger unit in height.
- the chiller unit main body has a support table substantially at the center portion in the height direction thereof, and the plate type heat exchanger unit is mounted on the support table and also secured to a side portion of the chiller unit main body through a support plate.
- the plate type heat exchanger unit comprises a plurality of plate type heat exchangers that are arranged so as to be spaced from one another and secured to confronting side portions of the chiller unit main body so that the weight balance of the whole chiller unit is kept.
- a through hole through which the water medium pipe is led out from the chiller unit main body is provided at the lower portion of the back surface of the chiller unit main body.
- a chiller unit having a chiller unit main body that is disposed to be juxtaposed with an outdoor unit and performs heat-exchange between refrigerant supplied from the outdoor unit and water medium supplied from the outside to generate cold or hot water, a refrigerant pipe and a water medium pipe connected to the plate type heat exchanger are led out to the back surface side of the chiller unit main body, a refrigerant pipe of the chiller unit main body and a refrigerant pipe of the outdoor unit are connectable to each other at the back surface side concerned, an electrical component box wounded by a heat insulating member is disposed at the front surface side of the chiller unit main body and an electrically-operated valve for controlling a flow rate of refrigerant is disposed below the electrical component box.
- the lead-out directions of the refrigerant pipes of the chiller unit and the outdoor unit are unified (regulated) by leading out the refrigerant pipes from the back surface side of the chiller unit and the outdoor unit, and also the lead-out directions of the refrigerant pipe and the water medium pipe are unified (regulated) by leading out the water medium pipe from the back surface side of the chiller unit. Accordingly, the connection work of the refrigerant pipes between the outdoor unit and the chiller unit can be facilitated, and thus the maintenance performance is enhanced. Furthermore, the electrical component box which is an existing member serves as a roof to prevent dew condensation water from dropping to the electrically-operated valve, so that it is unnecessary to provide an additional member such as an enclosure member or the like.
- the outdoor unit and the chiller unit have the respective electrical component boxes at the front surface sides thereof, and thus the worker can access both the electrical component boxes from the same side and at the same time, so that the maintenance performance can be enhanced. Still furthermore, according to this invention, air release from the watermediumpipe through which watermedium flows is not necessary, so that the maintenance performance is more enhanced.
- Fig. 1 is a refrigerant circuit diagram showing a refrigeration unit 10 having a chiller unit 12 according to a first embodiment.
- the refrigeration unit 10 has an outdoor unit 11 and a chiller unit 12, and an outdoor refrigerant pipe 14A of the outdoor unit 11 and a chiller-side refrigerant pipe 14B of the chiller unit 12 are joined to each other through closing valves 52, 53, thereby forming a refrigeration cycle 10A.
- the outdoor refrigerant pipe 14A and the chiller-side refrigerant pipe 14B are generically referred to as "refrigerant pipe 14" unless there are specifically distinguished from each other.
- a compressor 16 is disposed in the outdoor refrigerant pipe 14A of the outdoor unit 11.
- the compressor 16 is driven through a V belt 27 by a gas engine 30.
- An accumulator 17 is disposed at the suction side of the compressor 16, and a four-way valve 18 is disposed through an oil separator 17A at the discharge side of the compressor 16.
- An outdoor heat exchanger 19, an outdoor expansion valve 24 and a dry core 25 are successively connected to the four-way valve 18 in this order.
- a refrigerant-system bypass pipe 26 so as to bypass the outdoor expansion valve 24, and the refrigerant-system bypass pipe 26 is provided with a check valve 26A for preventing back flow of refrigerant.
- An outdoor fan 20 is disposed adjacently to the outdoor heat exchanger 19 so as to blow air to the outdoor heat exchanger 19.
- Reference numeral 29 represents a relief valve for releasing the pressure of the refrigerant at the discharge side of the compressor 16 to the suction side of the compressor 16.
- the gas engine 30 for driving the compressor 16 is supplied with air-fuel mixture from an engine fuel supply device 31.
- an engine fuel supply device 31 two fuel cutoff valves 33, a zero governor 34, a fuel adjusting valve 35 and an actuator 36 are successively disposed in a fuel supply pipe 32, and the side end portion of the actuator 36 of the fuel supply pipe 32 is connected to the gas engine 30.
- An air cleaner 36A is connected to the fuel supply pipe 32.
- An engine oil supply device 37 is connected to the gas engine 30.
- an oil supply pump 40 is disposed in the oil supply pipe 38, and engine oil is timely supplied to the gas engine 30.
- the engine oil supply device 37 is provided with a sub oil pan 37A and an oil level switch 37B.
- the outdoor unit 11 is provided with an engine cooling device 41 for withdrawing heat of the gas engine 30 by circulating cooling water through the gas engine 30, and the engine cooling device 41 is provided with an electrically-operated cooler three-way valve 43 which is connected through a pipe to a cooling water pipe through which cooling water flows.
- a circulating pump 44 and an exhaust gas heat exchanger 45 are successively connected to one of the outlets of the electrically-operated cooler three-way valve 43, and a passage through which cooling water passing through the gas engine 30 is returned to the gas engine 30 is formed by a pipe route for connecting the electrically-operated cooler three-way valve 43, the circulating pump 44 and the exhaust gas heat exchanger 45.
- the exhaust gas heat exchanger 45 is a heat exchanger for performing the heat exchange between the exhaust gas from the gas engine 30 and the cooling water, and an exhaust muffler 46 and an exhaust top 47 for processing exhaust gas are connected to the exhaust gas heat exchanger 45.
- the inlet of a cooling water electrically-operated three-way valve 48 is connected to the other outlet of the electrically-operated cooler three-way valve 43.
- One end of a exhaust heat withdrawing heat exchanger 49 is connected to one outlet of the cooling water electrically-operated three-way valve 48 through a pipe, and one end of a radiator 50 is connected to the other end of the cooling water electrically-operated three-way valve 48 through a pipe.
- the exhaust heat withdrawing heat exchanger 49 is a heat exchanger for performing the heat exchange between the refrigerant in the outdoor refrigerant pipe 14A and the cooling water in the cooling water pipe 42.
- a plate type heat exchanger is applied as the heat exchanger concerned.
- the radiator 50 cools the cooling water passing through the radiator 50, and it is disposed adjacently to the outdoor fan 20 so that air is blown from the outdoor fan 20 to the radiator 50.
- Reference numeral 51 represents a cooling water reserve tank for pooling cooling water to be timely supplied to the cooling water pipe 42.
- the chiller unit 12 performs the heat exchange between water medium passing through the water medium pipe 61 and flowing into the chiller unit 12 and refrigerant of the chiller-side refrigerant pipe 14B connected to the outdoor refrigerant pipe 14A to generate cold water or hot water.
- the chiller unit 12 is equipped with plate type heat exchangers 62a, 62b for performing the heat exchange between the refrigerant and the water medium.
- the water medium pipe 61 has a flow-in side water medium pipe 89 through which water medium to flow into the plate type heat exchangers 62a, 62b flows, and a flow-out side water medium pipe 90 through which water medium to flow out from the plate type heat exchangers 62a, 62b flows.
- the flow-in side water medium pipe 89 is branched at a branch point a, and one of the branched pipes is connected to the plate type heat exchanger 62a at a connection portion a2 while the other pipe is connected to the plate type heat exchanger 62b at a connection portion a3.
- the flow-out side watermediumpipe 90 connected to the connection portion a4 of the plate type heat exchanger 62a and the flow-out side water medium pipe 90 connected to the connection portion a5 of the plate type heat exchanger 62b join together at a confluent point a6, and lead out.
- Two electrically-operated valves 60 for controlling the flow rate (amount) of the refrigerant flowing through the chiller-side refrigerant pipe 14B are connected to the chiller-side refrigerant pipe 14B.
- the chiller-side refrigerant pipe 14B connected to the electrically-operated valve 60 is branched at a branch point b1, and then one of the branched pipes is connected to the plate type heat exchanger 62a at a connection portion b2 while the other pipe is connected to the plate type heat exchanger 62b at a connection portion b3.
- chiller-side refrigerant pipe 14B connected to the connection portion b4 of the plate type heat exchanger 62a and the chiller-side refrigerant pipe 14B connected to the connection portion b5 of the plate type heat exchanger 62b are connected to each other at a branch point b6.
- the two plate type heat exchangers 62a, 62b are provided in parallel to the water medium pipe 61, and also the two plate type heat exchangers 62a, 62b are provided in parallel to the chiller-side refrigerant pipe 14B. Therefore, the temperature of the refrigerant flowing in the plate type heat exchanger 62a and the temperature of the refrigerant flowing into the plate type heat exchanger 62b can be set to be substantially equal to each other, and also the water media flowing in the two plate type heat exchangers 62a and 62b in parallel can be cooled or heated substantially at the same temperature, whereby cold water or hot water can be generated at a desired temperature with high precision.
- Figs. 2 to 4 show a state that the outdoor unit 11 and the chiller unit 12 are disposed outdoors, and are front view, back view and top views of the outdoor unit 11 and the chiller unit 12.
- the outdoor unit 11 and the chiller unit 12 are disposed and fixed on a dedicated vibration-proof table while arranged side by side.
- the vibration-proof table 70 has a first plate 71 on which the outdoor unit 11 and the chiller unit 12 are mounted and fixed, and a second plate 72 disposed at the lower side of the first plate 71.
- a cushioning member 73 is interposed between the first plate 71 and the second plate 72, and vibration occurring when the outdoor unit 11 is operated is absorbed by the cushioning member 73. This construction prevents the outdoor unit 11 and the chiller unit 12 from being adversely affected by the vibration occurring under the operation of the outdoor unit 11.
- the outdoor unit 11 and the chiller unit 12 are mounted side by side on the dedicated vibration-proof table 70. Therefore, a worker or the like can easily perform the installation work by securing the outdoor unit 11 and the chiller unit 12 at predetermined positions of the vibration-proof table 70, and thus the working efficiency can be enhanced.
- an electrical component box 74 containing electrical equipment for controlling each equipment of the outdoor unit is provided at the front surface side of the outdoor unit main body 74 of the outdoor unit 11, and the worker or the like can easily access the electrical component box 74 by detaching a front panel 75 provided at the front side of the electrical component box 74.
- an electrical component box 78 containing electrical equipment for controlling each equipment of the chiller unit 12 is provided at the front surface side of the chiller unit main body 77 ( Figs. 5 and 6 ), and the worker or the like can easily access the electrical component box 78 by detaching a front panel ( Fig. 2 )provided in front of the electrical component box 78.
- control electrical devices mounted in the electrical component box 74 and the control electrical devices mounted in the electrical component box 78 are connected to one another through wires (not shown) so that signal communication can be performed. These control electrical devices operate in cooperation and control the respective devices of the outdoor unit 11 and the chiller unit 12.
- the electrical component boxes 74, 78 have the electrical devices, and thus maintenance occurs relatively frequently, so that these electrical component boxes 74 and 78 are required to be easily accessible. Furthermore, the control electrical devices of the electrical component boxes 74, 78 operate in cooperation with each other, and the electrical component boxes 74 and 78 are required to be simultaneously subjected to maintenance.
- the outdoor unit 11 and the chiller unit 12 are arranged side by side on the vibration-proof table 70, and also the electrical component box 74 is disposed at the front surface side of the outdoor unit main body 76 while the electrical component box 78 is disposed at the front surface side of the chiller unit 12. The worker or the like can easily access the electrical component boxes 74 and 78 by detaching the front panel 75 of the outdoor unit 1 and the front panel 79 of the chiller unit 12, and also the maintenance can be simultaneously executed on the electrical component boxes 74 and 78.
- the worker or the like can access these electrical component boxes 74 and 78 from the same side, and thus the maintenance performance can be enhanced.
- refrigerant-pipe through holes 80a, 80b through which the refrigerant pipes penetrate are formed in the back surface of the outdoor unit main body 76, and also refrigerant-pipe through holes 81a and 81b through which the refrigerant pipes penetrate are formed in the back panel 82 of the chiller unit main body 77.
- the refrigerant pipe 14 led out from the outdoor unit main body 76 through the refrigerant-pipe through holes 80a, 80b extends to the neighborhoods of the refrigerant-pipe through holes 81a and 81b, and led into the chiller unit main body 77 through the refrigerant-pipe through holes 81a and 81b, whereby the outdoor refrigerant pipe 14A ( Fig.
- the refrigerant pipe 14 exposed to the outside is located at the back sides of the outdoor unit main body 76 and the chiller unit main body 77. Therefore, when the outdoor unit 11 and the chiller unit 12 mounted on the vibration-proof table 70 are viewed from the front side, the refrigerant pipe 14 is hardly viewed, and thus the exterior appearance is enhanced.
- the refrigerant pipe 14 may be led out from the back surface sides of the outdoor unit 11 and the chiller unit 12. That is, in this embodiment, the lead-out directions of the outdoor unit 11 and the chiller unit 12 may be unified (regulated). In this case, the connection work of the refrigerant pipe 14 between the outdoor unit 11 and the chiller unit 12 can be facilitated, and the maintenance performance can be enhanced.
- water-medium-pipe through holes 88a, 88b are formed in the back panel 82 as shown in Figs. 3 and 6 , and the water medium pipe 61 is led in and out at the back side of the chiller unit 12 through the water-medium-pipe through holes 88a and 88b. Accordingly, the lead-in and lead-out directions of the refrigerant pipe 14 and the water medium pipe 61 are unified, and the connection work of connecting the water medium pipe 61 to the water supply pipe extending from the outside can be facilitated.
- the width H1 in the depth direction of the outdoor unit 11 and the width H2 in the depth direction of the chiller unit 12 are set to be substantially equal to each other, whereby the sense of unity between the outdoor unit 11 and the chiller unit 12 is enhanced and the exterior appearance is enhanced.
- the refrigerant pipe 14 between the refrigerant-pipe through holes 80a, 80b and the refrigerant-pipe through holes 81a, 81b can be formed to be substantially linear, so that the processing of the refrigerant pipes 14 can be facilitated and the cost can be reduced.
- Fig. 5 is a perspective view showing the chiller unit main body 77 when viewed from a side at which the electrical component box 78 is disposed
- Fig. 6 is a perspective view showing the chiller unit main body 77 when viewed from a side at which the electrical component box 78 is not disposed.
- the side panels constituting the side surface of the chiller unit main body 77 and the top panel constituting the upper surface of the chiller unit main body 77 are detached from the chiller unit main body 77.
- a back panel 82 as a part of the panel provided to the back surface of the chiller unit main body 77 are secured to the chiller unit main body 77 for convenience of description.
- the chiller unit main body 77 is formed substantially in a rectangular parallelepiped shape, and has a frame 83 constituting the respective side portions of the chiller unit main body 77.
- the frame 83 has a center lateral frame 84 which is provided at the substantially center position in the height direction of the chiller unit main body 77 so as to extend in the horizontal direction, and two partition plates 99a, 99b (support table) extending in the horizontal direction are fixed to the center lateral frame 84.
- the inside of the chiller unit main body 77 is partitioned into upper and lower stages by the partition plates 99a, 99b.
- Upper lateral frames 85a, 85b are respectively provided above the center lateral frame 84 at the side portions of the chiller unit main body 77 so as to be bridged between vertically-extending frames.
- the electrical component box 78 described above and plate type heat exchangers 62a and 62b are provided in the upper chamber (upper stage portion) formed at the upper stage of the chiller unit main body 77 which is partitioned by the partition plates 99a, 99b.
- the plate type heat exchangers 62a, 62b are fixed through support plates 87a, 87b (in Fig. 5 , the support plate 87a is not illustrated) to the upper lateral frames 85a, 85b provided to the sides of the chiller unit main body 77 while mounted and supported on the partition plate 99a and 99b, and are firmly secured so that no displacement occurs in the horizontal and vertical directions.
- the plate type heat exchangers 62a and 62b which are heavier in weight than the other equipment are provided in the upper stage chamber 86, there is a risk that the center of gravity of the chiller unit main body 77 is shifted to a higher position as compared with the case where the plate type heat exchangers 62a and 62b are provided in the low stage chamber 92 (lower stage portion), so that the safety of the chiller unit main body 77 itself may be lost.
- the plate type heat exchangers 62a and 62b are arranged in the upper stage chamber 86 in consideration of the total weight balance of the chiller unit main body 77.
- the plate type heat exchanger 62a is fixed at the front side of the upper lateral frame 85a disposed at one side portion of the chiller unit main body 77
- the plate type heat exchanger 62b is fixed at the back side of the upper lateral frame 85b disposed at the other side of the chiller unit main body 77 so that the plate type heat exchangers 62a and 62b are spaced from each other to face each other diagonally (or located at the counter sides) in the upper stage chamber 86 so that the weight balance of the chiller unit main body 77 is kept).
- the plate type heat exchangers 62a and 62b are prevented from being arranged in an unbalanced style, so that the center of gravity of the chiller unit main body 77 can be prevented from being displaced and thus the safety of the chiller unit main body can be secured. Accordingly, when the chiller unit main body 77 is transported to an installation place or mounted on the vibration-proof table 70, the chiller unit 12 can be moved while stabilized, and thus the work can be facilitated.
- the water medium pipe 61 and the chiller-side refrigerant pipe 14B are connected to the plate type heat exchangers 62a, 62b, and the construction of the water medium pipes 61 will be first described.
- the water-medium-pipe through holes 88a and 88b through which the water medium pipe 61 penetrates are formed at the lower portion of the back panel 82, and the water medium pipe 61 penetrates through the water-medium-pipe through holes 88a and 88b.
- the water medium pipe 61 comes into contact with the edges of the water-medium-pipe through holes 88a and 88b, and thus it is kept to be supported by the edges of the water-medium-pipe through holes 88a and 88b.
- the water medium pipe 61 is a pipe through which water medium flows, and it is larger in diameter and heavier in weight than the refrigerant pipe 14.
- the water-medium-pipe through holes 88a and 88b at the lower portion of the back panel 82, the load imposed from the water medium pipe 61 to the back panel 82 can be reduced.
- the flow-in side water medium pipe 89 through which water medium to flow into the plate type heat exchangers 62a and 62b flows penetrates through the water-medium-pipe through hole 88a at the left side of Fig. 6 out of the two water-medium-pipe through holes 88a and 88b
- the flow-out side water medium pipe 90 through which water medium to flow out from the plate type heat exchangers 62a and 62b flows penetrates through the water-medium-pipe through hole 88b at the right side of Fig. 6 .
- the flow-in side water-medium pipe 89 introduced in the chiller unit main body 77 through the water-medium-pipe through hole 88a extends horizontally along the lower surface 91 of the chiller unit main body 77 by a predetermined distance as shown in Fig. 6 , and then is branched, at a branch point a1, into a pipe through which water medium to flow into the plate type heat exchanger 62a and a pipe through which water medium to flow into the plate type heat exchanger 62b flows.
- the respective branched pipes are connected to the connection portions a2, a3 formed at the upper portion of the plate type heat exchangers 62a, 62b. In this case, as shown in Figs.
- the respective pipes are set not to extend to higher positions than the connection portions a2 and a3. That is, the flow-in side water medium pipes 89 corresponding to the connection pipes to be connected to the plate type heat exchangers 62a and 62b are not located at positions higher than the top portions of the plate type heat exchangers 62a and 62b.
- the distance from the branch point of the water medium pipe 61 to each of the plate type heat exchangers 62a, 62b is adjusted to be as long as possible so that the same flow amount of water medium flows into the plate type heat exchangers 62a and 62b.
- the plate type heat exchangers 62a and 62b are provided in the upper stage chamber, and thus the distance between the branch point a1 of the lower stage chamber 92 and the connection portion a2, a3 of the plate type heat exchanger 62a, 62b can be set to a large value. Therefore, after the flow-in side water medium pipe 89 is branched in the lower stage chamber 92, and then the shape of the flow-in side water medium pipe 89 from the branch point till the connection point to the plate type heat exchanger 62a, 62b can be set to be substantially linear while the distance of the flow-in side water medium pipe 89 is set to be long.
- the flow-in side water medium pipe 89 serving as a flow dividing pipe is set so as not to extend to a position higher than the connection portions a2, a3 of the plate type heat exchangers 62a, 62b. Therefore, it is unnecessary that the flow-in side water medium pipe 89 is designed like the shape of a Japanese shrine-gate to connect the flow-in side water medium pipe 89 to the connection portions a2, a3, and thus air can be prevented from being trapped at the portion formed like the shape of the Japanese shrine-gate in the flow-in side water medium pipe 89.
- the plate type heat exchangers 62a, 62b are provided at the upper stage chamber 86, and thus the space can be secured in the lower stage chamber 92.
- the pipes for the flow division such as the flow-in side water medium pipe 89, etc. are collectively provided in the lower stage chamber 92, so that the space can be effectively used.
- the flow-out side water medium pipes 90 through which water medium flowing out from the plate type heat exchangers 62a, 62b are led out from the connection portion a4 ( Fig. 6 ) and the connection portion a5 ( Fig. 5 ) which are formed at the lower side of the plate type heat exchangers 62a, 62b, and then join together at a predetermined position (joint point a6, Fig. 5 ) of the lower stage chamber 92 in which the space is secured. Furthermore, the jointed flow-out side water medium pipe 90 is formed to extend substantially horizontally along the lower surface 91 to the water-medium-pipe through hole 88b, passed through the water-medium-pipe through hole 88b and then led out to the outside of the chiller unit 77.
- the plate type heat exchangers 62a, 62b are disposed in the upper stage chamber 86, so that the large space can be secured in the lower stage chamber 92. Accordingly, the flow-out side water medium pipes 90 can be smoothly joined to each other by effectively using the space of the lower stage chamber 92 without extending the flow-out side watermediumpipes 90 to a predetermined position to join together by making the flow-out side water medium pipes 90 meander.
- the flow-out side water medium pipes 90 serving as the connection pipes connected to the plate type heat exchangers 62a and 62b are set so as not to be located at positions higher than the plate type heat exchangers 62a and 62b.
- the flow-out side water medium pipes 90 are designed like the shape of the Japanese shrine-gate to connect the flow-out side water medium pipes 89 to the connection portions a4, a5, and thus air can be prevented from being trapped at the portion formed like the shape of the Japanese shrine-gate in the flow-out side water medium pipes 90.
- Fig. 7 is a top view showing the portion of the flow-out side water medium pipe 90 which extends substantially horizontally along the lower surface 91 to the water-medium-pipe through hole 88b
- Fig. 8 is a cross-sectional view taken along a line of VIII-VIII of Fig. 7
- Fig. 9 is a front view showing the state that a flow switch 93 described later is secured to the flow-out side water medium pipe 90.
- the diameter H3 of the flow-out side water medium pipe 90 at the surrounding portion of the joint point a6 is set to be larger than the diameter H4 of the flow-out side water medium pipe 90 at the portion which is located at the upstream side of the H3 portion with respect to the joint point a6. Accordingly, water media from the plate type heat exchangers 62a and 62b join together at the joint point a6, and volume-increased water medium can smoothly flow through the flow-out side water medium pipe 90. Furthermore, as shown in Figs.
- a penetration pipe 90b having a larger diameter than the diameter H3 penetrates through the water-medium-pipe through hole 88b while supported by the surrounding portion of the through hole 88b, and the tip of the flow-out side water medium pipe 90 is screwed into the penetration pipe 90b.
- the portion of the flow-out side water medium pipe 90 which extends substantially horizontally along the lower surface 91 is provided with a paddle type flow switch 93.
- the flow switch 93 detects whether water medium flows through the flow-out side water medium pipe 90, thereby determining whether the water medium in the pipe freezes or not.
- the flow switch 93 is provided with a paddle 94 extending into the inside of the flow-out side water medium pipe 90.
- the water medium impinges against the paddle 94 while the water medium flows through the flow-out side water medium pipe 90, whereby the paddle 94 is displaced to the downstream side of the water medium, and a contact point (not shown) provided to the flow switch 93 is connected, whereby a signal indicating the flow of the water medium is transmitted to the control electrical equipment of the electrical component box 78.
- the flow switch 93 is tightly screwed into and fixed to the screw port 90a provided at the upper portion of the flow-out side water medium pipe 90 with no clearance so as to prevent leakage of water medium from the fixing place of the flow switch 93.
- This paddle 94 is formed of a thin member having a substantially rectangular shape in front view ( Fig. 9 ), and the paddle 94 extends vertically downwardly in the flow-out side water medium pipe 90, and surely impinges against the water medium flowing in the pipe.
- the shape of the paddle 94 of Fig. 9 is an example, and the shape and length of the paddle 94 may be properly changed in accordance with the application.
- the paddle 94 is arranged vertically to the flow direction of the water medium.
- the flow switch 93 is provided to the flow-out side water medium pipe 90 extending substantially horizontally, and thus the paddle 94 extending vertically downwardly in accordance with the gravitational force is perpendicular to the direction of the water medium flowing in the pipe, whereby the paddle type flow switch 93 can be actuated with high precision.
- the plate type heat exchangers 62a, 62b are provided in the upper stage chamber 86, thereby securing the space in the lower stage chamber 92, ad the flow switch 93 is provided in the lower stage chamber 92 in which the space concerned is secured. Therefore, maintenance can be done on the flow switch 93 by actively using the space, and thus the maintenance performance of the flow switch 93 is enhanced.
- the flow switch 93 is provided to the water medium pipe 61, particularly to the flow-out side water medium pipe 90, and when freezing occurs in the water medium, the freezing can be rapidly detected by the flow switch 93.
- the chiller unit 12 of this embodiment and the outdoor unit 11 are arranged side by side on the vibration-proof table 70, and vibration occurring in connection with the actuation of the outdoor unit 11 is slightly transmitted to the chiller unit 12.
- the flow switch 93 detects on the basis of the displacement of the paddle 94 whether water medium flows or not. In order to enhance the detection precision, it is required that the transmission of the vibration to the paddle 94 is suppressed as much as possible.
- a support frame 91a Figs. 5 , 7 and 8 .
- a fixing member 95 for fixing the flow-out side water medium pipe 90 and the support frame 91a is provided to the support frame 91a
- the flow switch 93 is provided to the flow-out side water medium pipe 90 in the neighborhood of the fixing member 95. Accordingly, the flow switch 93 is provided at the portion of the flow-out side water medium pipe 90 which is fixed by the fixing member 95 so that the vibration at this portion is suppressed at the maximum level. Accordingly, the transmission of the vibration to the flow switch 93 can be suppressed, and the detection precision of the flow switch 93 can be enhanced, so that the flow of the water medium can be substantially accurately detected.
- Reference numeral 95b represents the fixing member for fixing the flow-out side water medium pipe 90 to the lower surface 91 in the neighborhood of the water-medium pipe through hole 88b.
- refrigerant pipe through holes 81a and 81b penetrating through the chiller-side refrigerant pipe 14B are formed in the back panel 82, and the refrigerant pipe 14 penetrates through the refrigerant pipe through holes 81a, 81b (see Fig. 3 as well as Fig. 60.
- the chiller-side refrigerant pipe 14B comes into contact with the edges of the refrigerant pipe through holes 81a, 81b, and is set to be supported by the edges of the refrigerant pipe through holes 81a, 81b.
- the chiller-side refrigerant pipe 14B which is made to penetrate through the refrigerant pipe through hole 81a and introduced into the chiller unit main body 77 extends substantially horizontally along the lower surface, and then is connected to an electrically-operated valve 60 provided at the front side of the lower stage chamber 92.
- the electrically-operated valve 60 is a valve for controlling the flow rate (amount) of refrigerant flowing in the chiller-side refrigerant pipe 14B.
- the electrically-operated valve 60 is connected to electronic equipment for control in the electrical component box 78 through a wire (not shown) so that signals can be communicated therebetween, and the opening/closing state of the electrically-operated valve is controlled by the electronic equipment for control.
- the electrically-operated valve 60 is disposed below the electrical component box 78.
- the electrical component box 78 is wound by a heat insulating member 96 so that the effect of the temperature at the outside of the electrical component box 78 is prevented from being transmitted to the electrical equipment provided in the electrical component box 78. Therefore, the electrical equipment in the electrical component box 78 can be prevented from being adversely affected by the outside temperature, and also the temperature of the surface of the electrical component box 78 is also prevented from being extremely lower than the temperature of the surrounding of the electrical component box 78, so that dew condensation water is prevented fromadhering to the surface of the electrical component box 78.
- the electrically-operated valve 60 is disposed below the electrical component box 78 for which adhesion of dew condensation water is prevented. Accordingly, the electrical component box 78 serves as a roof, so that dew condensation water occurring in the chiller unit main body 77 can be prevented from dropping to the electrically-operated valve 60. Particularly, it is unnecessary to provide a special member such as a roof having a mechanism for preventing dew condensation water, an enclosure member for covering the electrically-operated valve 60 or the like in order to prevent dew condensation water from dropping to the electrically-operated valve 60, and the dropping of dew condensation water is prevented by using existing equipment, so that the cost can be reduced.
- a special member such as a roof having a mechanism for preventing dew condensation water, an enclosure member for covering the electrically-operated valve 60 or the like in order to prevent dew condensation water from dropping to the electrically-operated valve 60, and the dropping of dew condensation water is prevented by using existing equipment, so that the cost can be reduced.
- the physical distance between the electrically-operated valve 60 and the electrical component box 78 connected to the electrically-operated valve 60 through a wire is nearer, and thus the distance of the wire between the electrically-operated valve 60 and the electrical component box 78 can be shortened. Therefore, the cost can be reduced and also loose or slack of the wire can be prevented, so that the state of the wire can be prevented from being complex.
- the chiller-side refrigerant pipe 14B led out from the electrically-operated valve 60 is branched at a branch point b1 ( Fig. 5 ) in the lower stage chamber 92 in which the space is secured, and the branched pipes are connected to the connection portion b2 ( Fig. 6 ) and the connection portion b3 ( Fig. 5 ) which are formed at the lower portions of the plate type heat exchangers 62a and 62b respectively. That is, the chiller-side refrigerant pipes 14B used for diversion of refrigerant are collectively disposed at the lower stage 92.
- the plate type heat exchangers 62a and 62b are provided in the upper stage chamber 86, and thus the chiller-side refrigerant pipe 14B can be branched by using the space formed in the lower stage chamber 92 while the flow rate of the refrigerant flowing through the chiller-side refrigerant pipe 14B is kept adjustable.
- the chiller-side refrigerant pipes 14B which are connected to the connection portion b4 ( Fig. 5 ) and the connection portion b5 ( Fig. 6 ) of the plate type heat exchangers 62a and 62b respectively join together at the branch point b6 ( Fig. 5 ), and then extend to the refrigerant pipe through hole 81b.
- the chiller-side refrigerant pipes 14B are collectively disposed in the space formed in the lower stage chamber 92, and also arranged so as not to extend to positions higher than the top portions of the plate type heat exchangers 62a and 62b.
- the outdoor unit 11 and the chiller unit 12 are arranged side by side, and the electrical component box 74 is disposed at the front surface side of the outdoor unit main body 76 while the electrical component box 78 is disposed at the front surface side of the chiller unit 12. Therefore, the worker can easily access the electrical component boxes 74 and 78 and simultaneously do maintenance on the electrical component boxes 74 and 78 by detaching the front panel 75 of the outdoor unit 11 and the front panel 79 of the chiller unit 12. Therefore, the outdoor 11 and the chiller 12 can be smoothly subjected to maintenance in cooperation with each other, and thus the maintenance performance can be enhanced.
- the worker when maintenance is done on both the electrical component box 78 of the chiller unit 12 and the electrical component box 74 of the outdoor unit 11 at the same time, the worker can access the electrical component boxes 74 and 78 from the same direction, and thus the maintenance performance can be enhanced.
- the refrigerant pipe 14 is led out from the respective back sides of the outdoor unit 11 and the chiller unit 12. That is, in this embodiment, the lead-out direction of the refrigerant pipe 14 is unified between the outdoor unit 11 and the chiller unit 12. Therefore, the connection work of the refrigerant pipe between the outdoor unit 11 and the chiller unit 12 is facilitated, and the maintenance performance is enhanced.
- the chiller unit 12 as shown in Fig.
- the water medium pipe through holes 88a and 88b are formed in the back panel 82, the water medium pipe 61 is led out from the back side through the water medium pipe through holes 88a and 88b, the lead-out directions of the refrigerant pipe 14 and the water medium pipe 61 are unified, and the connection work between the water medium pipe 61 and the water supply pipe extending from the outside is facilitated.
- the electrically-operated valve 60 is disposed below the electrical component box 78 in which adhesion of dew condensation water is prevented by winding the heat insulating member 96 around the electrical component box 78. Therefore, dew condensation water occurring in the chiller unit main body 77 can be prevented from dropping to the electrically-operated valve 60 by the electrical component box 78 serving as a roof. Particularly, it is unnecessary to provide a special member such as a roof having a mechanism for preventing dew condensation water, an enclosure member for covering the electrically-operated valve 60 or the like in order to prevent dew condensation water from dropping to the electrically-operated valve 60, and the dropping of dew condensation water is prevented by using existing equipment, so that the cost can be reduced.
- a special member such as a roof having a mechanism for preventing dew condensation water, an enclosure member for covering the electrically-operated valve 60 or the like in order to prevent dew condensation water from dropping to the electrically-operated valve 60, and the dropping of dew condensation water is prevented by using existing equipment,
- the width H1 in the depth direction of the outdoor unit 11 and the width H2 in the depth direction of the chiller unit 12 are set to be substantially equal to each other as shown in Fig. 4 . Accordingly, the sensation of unity between the outdoor unit 11 and the chiller unit 12 is enhanced, and the exterior appearance is enhanced.
- the chiller unit 12 and the outdoor unit 11 are arranged side by side on the vibration-proof table 70. This construction suppresses the adverse effect on the outdoor unit 11 and the chiller unit 12 which is caused by vibration occurring under operation of the outdoor unit 1.
- the two plate type heat exchangers 62a and 62b are fixed in the upper stage chamber 86 of the chiller unit main body so as to be spaced from each other, and refrigerant flowing in the chiller-side refrigerant pipe 14B and water medium flowing in the water medium pipe 61 are split to the plate type heat exchangers 62a and 62b. Furthermore, in the lower stage chamber 92 in which the space is secured, the water medium pipe 61 is branched and the branched pipes are arranged so as not to extend to portions higher than the top portions of the plate type heat exchangers 62a and 62b.
- the same flow rate (amount) of water medium is required to flow into each of the plate type heat exchangers 62a and 62b.
- the distance from the branch point in the water medium pipe 61 to the plate type heat exchangers 62a, 62b is set to be as long as possible and the apparatus is adjusted so that the same flow rate (amount) of water medium flows into each of the plate type heat exchangers 62a and 62b.
- the water medium pipe 61 is arranged in a great meandering shape so that the distance from the branch point of the water medium pipe 61 to the plate type heat exchanger 62a, 62b is set to be long. In this case, air is trapped at the meandering portions, and an air releasing work for releasing air is required.
- the plate type heat exchangers 62a and 62b are provided in the upper stage chamber as described above, and thus the large space is secured in the lower stage chamber 92.
- the flow-in side water medium pipe 89 is branched in the thus-secured space, and also the distance between the branch point and the upper portion of the plate type heat exchanger 62a, 62b (the connection portion between the water medium pipe 61 and the plate type heat exchanger 62a, 62b) can be kept long.
- the shape of the flow-in side water medium pipe 89 from the branch point to the connection portion thereof with the plate type heat exchanger 62a, 62b can be set to a substantially linear shape. Accordingly, it is unnecessary to arrange the water medium pipe 61 in a meandering shape, and portions at which air is trapped in the passage of the flow-in side water medium pipe 89 can be excluded. Therefore, the air releasing work is not required and the maintenance performance can be enhanced.
- the plate type heat exchangers 62a, 62b are fixed to the upper lateral frames 85a and 85b through the support plates 87a and 87b (in Fig. 5 , the support plate 87a is not shown) while mounted and supported on the partition plates 99a, 99b (support table). Therefore, the plate type heat exchangers 62a and 62b are firmly secured to the chiller unit main body 77 under the state that no wobbling occurs in the vertical and horizontal directions.
- the plate type heat exchangers 62a and 62b are arranged in the upper stage chamber 86 in consideration of the overall weight balance of the chiller unit main body 77. That is, the plate type heat exchanger 62a is fixed to the front surface side of the upper lateral frame 85a disposed at one side portion of the chiller unit main body 77, and the plate type heat exchanger 62b is fixed to the back surface side of the upper lateral frame 85b disposed at the other side portion while facing the plate type heat exchanger 62a.
- the plate type heat exchangers 62a and 62b are prevented from being arranged with being displaced to some place, and thus the center of gravity of the chiller unit main body 77 is prevented from being displaced, so that stability of the chiller unit main body is secured. Accordingly, the chiller unit 12 can be moved under a stable and the work can be facilitated particularly when the chiller unit main body 77 is transported to a place where it is installed or when the chiller unit main body 77 is mounted on the vibration-proof table 70.
- the water medium pipe through holes 88a and 88b through which the water medium pipe 61 penetrates are formed at the lower portion of the back panel 82, and the water medium pipe 61 penetrates through the water medium pipe through holes 88a and 88b.
- the water medium pipe 61 penetrates through the water medium pipe through holes 88a and 88b, the water medium pipe 61 comes into contact with the edges of the water medium pipe through holes 88a and 88b, and is supported by these edges.
- the water medium pipe 61 is a pipe through which water medium flows, and it is designed to be larger in diameter and heavier in weight than the refrigerant pipe 14.
- the water medium pipe through holes 88a and 88b are formed at the lower portion of the back panel 82, whereby the load imposed on the back panel 82 from the water medium pipe 61 can be reduced.
- the chiller unit 12 has the two electrically-operated valves and the two plate type heat exchangers.
- the numbers of the electrically-operated valve and the plate type heat exchangers are not limited to those of the above embodiment, and these numbers may be set to three or more. In the following description, an embodiment of the chiller unit 12 having three electrically-operated valves and three plate type heat exchangers will be described.
- Fig. 10 is a refrigerant circuit diagram showing a refrigerating machine 10 having the chiller unit 12 according to this embodiment.
- three electrically-operated valves 60 are provided in parallel with respect to the chiller-side refrigerant pipe 14B as shown in Fig. 10 . Furthermore, three plate type heat exchangers 62c, 62d, 62e are provided in parallel with respect to the chiller-side refrigerant pipe 14B and the water medium pipe 61, and a larger amount of cold water or hot water can be generated as compared with the first embodiment.
- the respective branched pipes are connected to the connection portion c2 of the plate type heat exchanger 62c, the connection portion c3 of the plat type heat exchanger 62d and the connection portion c4 of the plate type heat exchanger 62e.
- the flow-out side branch pipes 90 connected to the connection portion c5 of the plate type heat exchanger 62c, the connection portion c6 of the plate type heat exchanger 62d and the connection portion c7 of the plate type heat exchanger 62e join together at the joint point c8, and then are led out to the outside of the chiller unit 12.
- the chiller-side refrigerant pipe 14B connected to the electrically-operated valve 60 is branched at the branch point d1, and then the respective branched pipes are connected to the connection portion d2 of the plate type heat exchanger 62c and the connection portion d4 of the plate type heat exchanger 62d. Furthermore, the chiller-side refrigerant pipes 14B connected to the connection portion d5 of the plate type ht exchanger 62c, the connection portion d6 of the plate type heat exchanger 62d and the connection portion d7 of the plate type heat exchanger 62e join together at the branch point d8, and then are connected to the outdoor refrigerant pipe 14A.
- Fig. 11 is a perspective view showing the chiller unit main body 77 when the chiller unit main body 77 is viewed from a side at which the electrical component box 78 is disposed
- Fig. 12 is a perspective view showing the chiller unit main body 77 when the chiller unit main body 77 is disposed at a side at which the electrical component box 78 is disposed.
- the chiller unit 12 of this embodiment is juxtaposed with the outdoor unit 11 on the vibration-proof table 70 (see Figs. 2 and 3 ), and the electrical component box 78 is provided at the front surface side. Therefore, as in the case of the first embodiment, the worker can simultaneously and easily access the electrical component box 74 of the outdoor unit 11 and the electrical component box 78 of the chiller unit 12.
- all the plate type heat exchangers 62a, 62b and 62c are disposed in the upper stage chamber 86. These plate type heat exchangers 62a, 62b and 62c are firmly fixed to the upper lateral frames 85a and 85b through the support plate 98 while mounted and fixed on the partition plate 99a. Furthermore, in this embodiment, the flow switch 93 may not be provided.
- the branch point of the flow-in side water medium pipe 89 is provided in the lower stage chamber 92, and the respective branched flow-in side water medium pipes 89 are arranged to extend substantially linearly and connect to the connection portions c2, c3, c4 of the upper portions of the plate type heat exchangers 62c, 62d and 62e while the distance from the branch point to each plate type heat exchanger is kept long. Therefore, any portion at which air is trapped in the passage of the water medium pipe 61 can be excluded while the apparatus can be adjusted so that the same amount of water medium flows into the plate type heat exchangers 62c, 62d and 62e.
- the air releasing work for releasing air is not required, and the maintenance performance can be enhanced. Furthermore, the three electrically-operated valves 60 are disposed below the electrical component box 78, and thus dew condensation water can be prevented from dropping to the electrically-operated valve 60 while the existing electrical component box 78 serves as a roof.
- the chiller unit 12 is equipped with two or three plate type heat exchangers.
- the number of the plate type heat exchangers is not limited to these values, and it may be properly changed in accordance with the amount (volume) of cold water or hot water to be generated.
- the inside of the chiller unit main body 77 is separated into the upper stage chamber 86 and the lower stage chamber 92 by the partition plate 99a.
- the inside of the chiller unit main body 77 is separated into the upper and lower stage chambers 86 and 92. That is, the plate type heat exchangers 62 may be provided at the upper portion of the chiller unit main body 77.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
Description
- The present invention relates to a chiller unit having a heat exchanger for performing heat exchange between refrigerant and water medium.
- A chiller unit having a chiller unit body connected to a refrigeration cycle is generally known (see
JP-A-2004-251486 - In the construction of the chiller unit described above, the lead-out direction of the refrigerant pipe and the water pipe extending from the chiller unit and the lead-out direction of the refrigerant pipe extending from the outdoor unit are not unified (i.e.,. are not disorderly set), but they are disorderly set. Therefore, it has been difficult to perform a connection work for connecting the refrigerant pipe of the chiller unit and the refrigerant pipe of the outdoor unit and a connection work for connecting the water pipe extending from the chiller unit and the water supply pipe extending from the outside. Furthermore, an electrically-operated valve for controlling the flow rate of refrigerant is connected to the refrigerant pipe of the chiller unit, and much dew condensation occurs in the plate type heat exchanger and the refrigerant pipe of the chiller unit , so that a shielding member or the like which covers the electrically-operated valve is required to prevent dew condensation water from impinging against the electrically-operated valve.
- Furthermore, the arrangement position of an electrical component box of the chiller unit and the arrangement position of an electrical component box of the outdoor unit are irregular (random). Accordingly, when the outdoor unit and the chiller unit are arranged side by side, the electrical component box of the chiller unit and the electrical component box of the outdoor unit may be arranged to be oriented to different directions. Therefore, when a maintenance work is simultaneously executed on the chiller unit and the outdoor unit, the chiller unit and the outdoor unit cannot be accessed from the same direction, which may disturb the maintenance performance.
- Furthermore, in this type of chiller unit, air may be trapped in a water pipe (water medium pipe) which is designed (laid down) like the shape of a Japanese shrine-gate (Shinto's shrine gate) . Accordingly, in order to release air trapped in the water medium pipe, it is general that a special mechanism is provided in the water medium pipe and air trapped in the water medium pipe is released by using the mechanism. When air is released, a worker or the like is required to perform a work of releasing air trapped in the water medium pipe, which also disturbs the maintenance performance.
- The present invention has been implemented in view of the foregoing problems, and has an object of the present invention to provide a chiller unit that is disposed at a side of an outdoor unit and enhanced in maintenance performance, and also in which dew condensation water can be prevented from spattering to an electrically-operated valve in the chiller unit.
- Furthermore, the present invention has another object to provide a chiller unit that can be more enhanced in maintenance performance without using any work of releasing air in a water medium pipe.
- In order to attain the above objects, according to a first aspect of the present invention, there is provided a chiller unit having a chiller unit main body comprising: a plate type heat exchanger unit for performing heat exchange between refrigerant supplied from an outdoor unit through a refrigerant pipe and water medium supplied from the outside through a water refrigerant pipe to generate cold or hot water; an electrical component box that includes electronic equipment and is disposed at the front surface side of the chiller unit main body and surrounded by a heat insulating member; and an electrically-operated valve that is disposed below the electrical component box and controls a flow rate of refrigerant flowing through the refrigerant pipe of the chiller unit main body, wherein the refrigerant pipe and the water medium pipe connected to the plate type heat exchanger unit are lead out to the back surface side of the chiller unit main body, and a refrigerant pipe of the chiller unit main body is connectable to the refrigerant pipe from the outdoor unit at the back surface side.
- In the chiller unit, the outdoor unit and the chiller unit main body are arranged side by side and the width in the depth direction of the chiller unit main body and the width in the width direction of the outdoor unit are set to be substantially equal to each other.
- In the chiller unit, the chiller unit main body and the outdoor unit are mounted on a vibration-proof table.
- According to a second aspect of the present invention, there is provided a chiller unit having a chiller unit main body comprising: a housing having an upper stage portion and a lower stage portion; a plate type heat exchanger unit for performing heat exchange between refrigerant supplied from an outdoor unit through a refrigerant pipe and water medium supplied from the outside through a water medium pipe to generate cold or hot water; and a pipe group connected to the refrigerant pipe from the outdoor unit and the water medium pipe from the outside to supply the refrigerant and the water medium to the plate type heat exchanger unit, wherein the pipe group supplies the refrigerant and the water medium to the plate type heat exchanger unit while splitting the flow of each of the refrigerant and the water medium, the pipe group is collectively disposed in the lower stage portion of the chiller unit main body, and the pipe group is connected to the plate type heat exchanger unit so that the pipe group is located to be equal to or lower than the top portion of the plate type heat exchanger unit in height.
- In the chiller unit, the chiller unit main body has a support table substantially at the center portion in the height direction thereof, and the plate type heat exchanger unit is mounted on the support table and also secured to a side portion of the chiller unit main body through a support plate.
- In the chiller unit, the plate type heat exchanger unit comprises a plurality of plate type heat exchangers that are arranged so as to be spaced from one another and secured to confronting side portions of the chiller unit main body so that the weight balance of the whole chiller unit is kept.
- In the chiller unit, a through hole through which the water medium pipe is led out from the chiller unit main body is provided at the lower portion of the back surface of the chiller unit main body.
- According to a third aspect of the present invention, there is provided a chiller unit having a chiller unit main body that is disposed to be juxtaposed with an outdoor unit and performs heat-exchange between refrigerant supplied from the outdoor unit and water medium supplied from the outside to generate cold or hot water, a refrigerant pipe and a water medium pipe connected to the plate type heat exchanger are led out to the back surface side of the chiller unit main body, a refrigerant pipe of the chiller unit main body and a refrigerant pipe of the outdoor unit are connectable to each other at the back surface side concerned, an electrical component box wounded by a heat insulating member is disposed at the front surface side of the chiller unit main body and an electrically-operated valve for controlling a flow rate of refrigerant is disposed below the electrical component box.
- According to the present invention, the lead-out directions of the refrigerant pipes of the chiller unit and the outdoor unit are unified (regulated) by leading out the refrigerant pipes from the back surface side of the chiller unit and the outdoor unit, and also the lead-out directions of the refrigerant pipe and the water medium pipe are unified (regulated) by leading out the water medium pipe from the back surface side of the chiller unit. Accordingly, the connection work of the refrigerant pipes between the outdoor unit and the chiller unit can be facilitated, and thus the maintenance performance is enhanced. Furthermore, the electrical component box which is an existing member serves as a roof to prevent dew condensation water from dropping to the electrically-operated valve, so that it is unnecessary to provide an additional member such as an enclosure member or the like. Still Furthermore, the outdoor unit and the chiller unit have the respective electrical component boxes at the front surface sides thereof, and thus the worker can access both the electrical component boxes from the same side and at the same time, so that the maintenance performance can be enhanced. Still furthermore, according to this invention, air release from the watermediumpipe through which watermedium flows is not necessary, so that the maintenance performance is more enhanced.
-
-
Fig. 1 is a refrigerant circuit diagram showing a refrigeration unit having a chiller unit according to a first embodiment; -
Fig. 2 is a front view showing the chiller unit and an outdoor unit which are arranged side by side; -
Fig. 3 is a back view showing the chiller unit and the outdoor unit which are arranged side by side; -
Fig. 4 is a top view showing the chiller unit and the outdoor unit which are arranged side by side; -
Fig. 5 is a perspective view showing the chiller unit which is taken from a side at which an electrical component box is disposed; -
Fig. 6 is a perspective view showing the chiller unit from a side at which the electrical component box is not disposed; -
Fig. 7 is a top view of a flow-out side water medium pipe in the neighborhood of a flow switch; -
Fig. 8 is a VIII-VIII cross-sectional view ofFig. 7 ; -
Fig. 9 is a front view showing the flow switch which is secured to the flow-out side water medium pipe; -
Fig. 10 is a refrigerant circuit of a refrigeration unit having a chiller unit according to a second embodiment; -
Fig. 11 is a perspective view taken from a side at which an electrical component box of the chiller unit is disposed; and -
Fig. 12 is a perspective view taken from a side at which the electrical component box of the chiller unit is not disposed. - Embodiments according to the present invention will be described with reference to the accompanying drawings.
-
Fig. 1 is a refrigerant circuit diagram showing arefrigeration unit 10 having achiller unit 12 according to a first embodiment. - As shown in
Fig. 1 , therefrigeration unit 10 has anoutdoor unit 11 and achiller unit 12, and anoutdoor refrigerant pipe 14A of theoutdoor unit 11 and a chiller-side refrigerant pipe 14B of thechiller unit 12 are joined to each other throughclosing valves 52, 53, thereby forming a refrigeration cycle 10A. In the following description, theoutdoor refrigerant pipe 14A and the chiller-side refrigerant pipe 14B are generically referred to as "refrigerant pipe 14" unless there are specifically distinguished from each other. - A
compressor 16 is disposed in theoutdoor refrigerant pipe 14A of theoutdoor unit 11. Thecompressor 16 is driven through aV belt 27 by agas engine 30. Anaccumulator 17 is disposed at the suction side of thecompressor 16, and a four-way valve 18 is disposed through anoil separator 17A at the discharge side of thecompressor 16. Anoutdoor heat exchanger 19, anoutdoor expansion valve 24 and adry core 25 are successively connected to the four-way valve 18 in this order. Furthermore, a refrigerant-system bypass pipe 26 so as to bypass theoutdoor expansion valve 24, and the refrigerant-system bypass pipe 26 is provided with acheck valve 26A for preventing back flow of refrigerant. Anoutdoor fan 20 is disposed adjacently to theoutdoor heat exchanger 19 so as to blow air to theoutdoor heat exchanger 19.Reference numeral 29 represents a relief valve for releasing the pressure of the refrigerant at the discharge side of thecompressor 16 to the suction side of thecompressor 16. - The
gas engine 30 for driving thecompressor 16 is supplied with air-fuel mixture from an enginefuel supply device 31. In the enginefuel supply device 31, twofuel cutoff valves 33, a zerogovernor 34, afuel adjusting valve 35 and anactuator 36 are successively disposed in afuel supply pipe 32, and the side end portion of theactuator 36 of thefuel supply pipe 32 is connected to thegas engine 30. Anair cleaner 36A is connected to thefuel supply pipe 32. - An engine oil supply device 37 is connected to the
gas engine 30. In the engine oil supply device 37, anoil supply pump 40 is disposed in theoil supply pipe 38, and engine oil is timely supplied to thegas engine 30. The engine oil supply device 37 is provided with asub oil pan 37A and anoil level switch 37B. - Furthermore, the
outdoor unit 11 is provided with anengine cooling device 41 for withdrawing heat of thegas engine 30 by circulating cooling water through thegas engine 30, and theengine cooling device 41 is provided with an electrically-operated cooler three-way valve 43 which is connected through a pipe to a cooling water pipe through which cooling water flows. - A circulating
pump 44 and an exhaustgas heat exchanger 45 are successively connected to one of the outlets of the electrically-operated cooler three-way valve 43, and a passage through which cooling water passing through thegas engine 30 is returned to thegas engine 30 is formed by a pipe route for connecting the electrically-operated cooler three-way valve 43, the circulatingpump 44 and the exhaustgas heat exchanger 45. Here, the exhaustgas heat exchanger 45 is a heat exchanger for performing the heat exchange between the exhaust gas from thegas engine 30 and the cooling water, and anexhaust muffler 46 and anexhaust top 47 for processing exhaust gas are connected to the exhaustgas heat exchanger 45. - The inlet of a cooling water electrically-operated three-
way valve 48 is connected to the other outlet of the electrically-operated cooler three-way valve 43. One end of a exhaust heat withdrawingheat exchanger 49 is connected to one outlet of the cooling water electrically-operated three-way valve 48 through a pipe, and one end of aradiator 50 is connected to the other end of the cooling water electrically-operated three-way valve 48 through a pipe. Here, the exhaust heat withdrawingheat exchanger 49 is a heat exchanger for performing the heat exchange between the refrigerant in the outdoorrefrigerant pipe 14A and the cooling water in the coolingwater pipe 42. In this embodiment, a plate type heat exchanger is applied as the heat exchanger concerned. Theradiator 50 cools the cooling water passing through theradiator 50, and it is disposed adjacently to theoutdoor fan 20 so that air is blown from theoutdoor fan 20 to theradiator 50.Reference numeral 51 represents a cooling water reserve tank for pooling cooling water to be timely supplied to the coolingwater pipe 42. - The
chiller unit 12 performs the heat exchange between water medium passing through thewater medium pipe 61 and flowing into thechiller unit 12 and refrigerant of the chiller-siderefrigerant pipe 14B connected to the outdoorrefrigerant pipe 14A to generate cold water or hot water. Thechiller unit 12 is equipped with platetype heat exchangers - The
water medium pipe 61 has a flow-in sidewater medium pipe 89 through which water medium to flow into the platetype heat exchangers water medium pipe 90 through which water medium to flow out from the platetype heat exchangers water medium pipe 89 is branched at a branch point a, and one of the branched pipes is connected to the platetype heat exchanger 62a at a connection portion a2 while the other pipe is connected to the platetype heat exchanger 62b at a connection portion a3. Furthermore, the flow-outside watermediumpipe 90 connected to the connection portion a4 of the platetype heat exchanger 62a and the flow-out sidewater medium pipe 90 connected to the connection portion a5 of the platetype heat exchanger 62b join together at a confluent point a6, and lead out. - Two electrically-operated
valves 60 for controlling the flow rate (amount) of the refrigerant flowing through the chiller-siderefrigerant pipe 14B are connected to the chiller-siderefrigerant pipe 14B. The chiller-siderefrigerant pipe 14B connected to the electrically-operatedvalve 60 is branched at a branch point b1, and then one of the branched pipes is connected to the platetype heat exchanger 62a at a connection portion b2 while the other pipe is connected to the platetype heat exchanger 62b at a connection portion b3. Furthermore, the chiller-siderefrigerant pipe 14B connected to the connection portion b4 of the platetype heat exchanger 62a and the chiller-siderefrigerant pipe 14B connected to the connection portion b5 of the platetype heat exchanger 62b are connected to each other at a branch point b6. - As described above, in the
chiller unit 12 of this embodiment, the two platetype heat exchangers water medium pipe 61, and also the two platetype heat exchangers refrigerant pipe 14B. Therefore, the temperature of the refrigerant flowing in the platetype heat exchanger 62a and the temperature of the refrigerant flowing into the platetype heat exchanger 62b can be set to be substantially equal to each other, and also the water media flowing in the two platetype heat exchangers -
Figs. 2 to 4 show a state that theoutdoor unit 11 and thechiller unit 12 are disposed outdoors, and are front view, back view and top views of theoutdoor unit 11 and thechiller unit 12. - In this embodiment, as shown in
Figs. 2 to 4 , theoutdoor unit 11 and thechiller unit 12 are disposed and fixed on a dedicated vibration-proof table while arranged side by side. As shown inFigs. 2 and3 , the vibration-proof table 70 has afirst plate 71 on which theoutdoor unit 11 and thechiller unit 12 are mounted and fixed, and asecond plate 72 disposed at the lower side of thefirst plate 71. A cushioningmember 73 is interposed between thefirst plate 71 and thesecond plate 72, and vibration occurring when theoutdoor unit 11 is operated is absorbed by the cushioningmember 73. This construction prevents theoutdoor unit 11 and thechiller unit 12 from being adversely affected by the vibration occurring under the operation of theoutdoor unit 11. - Furthermore, the
outdoor unit 11 and thechiller unit 12 are mounted side by side on the dedicated vibration-proof table 70. Therefore, a worker or the like can easily perform the installation work by securing theoutdoor unit 11 and thechiller unit 12 at predetermined positions of the vibration-proof table 70, and thus the working efficiency can be enhanced. - Furthermore, as shown in
Figs. 2 and4 , anelectrical component box 74 containing electrical equipment for controlling each equipment of the outdoor unit is provided at the front surface side of the outdoor unitmain body 74 of theoutdoor unit 11, and the worker or the like can easily access theelectrical component box 74 by detaching afront panel 75 provided at the front side of theelectrical component box 74. Likewise, anelectrical component box 78 containing electrical equipment for controlling each equipment of thechiller unit 12 is provided at the front surface side of the chiller unit main body 77 (Figs. 5 and6 ), and the worker or the like can easily access theelectrical component box 78 by detaching a front panel (Fig. 2 )provided in front of theelectrical component box 78. - The control electrical devices mounted in the
electrical component box 74 and the control electrical devices mounted in theelectrical component box 78 are connected to one another through wires (not shown) so that signal communication can be performed. These control electrical devices operate in cooperation and control the respective devices of theoutdoor unit 11 and thechiller unit 12. - Here, the
electrical component boxes electrical component boxes electrical component boxes electrical component boxes outdoor unit 11 and thechiller unit 12 are arranged side by side on the vibration-proof table 70, and also theelectrical component box 74 is disposed at the front surface side of the outdoor unitmain body 76 while theelectrical component box 78 is disposed at the front surface side of thechiller unit 12. The worker or the like can easily access theelectrical component boxes front panel 75 of theoutdoor unit 1 and thefront panel 79 of thechiller unit 12, and also the maintenance can be simultaneously executed on theelectrical component boxes - According to this embodiment, when the maintenance is executed on the
electrical component box 78 of thechiller unit 12 and theelectrical component box 74 of theoutdoor unit 11, the worker or the like can access theseelectrical component boxes - Furthermore, as shown in
Fig. 3 , refrigerant-pipe throughholes main body 76, and also refrigerant-pipe throughholes back panel 82 of the chiller unitmain body 77. Therefrigerant pipe 14 led out from the outdoor unitmain body 76 through the refrigerant-pipe throughholes holes main body 77 through the refrigerant-pipe throughholes refrigerant pipe 14A (Fig. 1 ) and the chiller-siderefrigerant pipe 14B (Fig. 1 ) are connected to each other. As described above, according to this embodiment, therefrigerant pipe 14 exposed to the outside is located at the back sides of the outdoor unitmain body 76 and the chiller unitmain body 77. Therefore, when theoutdoor unit 11 and thechiller unit 12 mounted on the vibration-proof table 70 are viewed from the front side, therefrigerant pipe 14 is hardly viewed, and thus the exterior appearance is enhanced. - Furthermore, in this embodiment, the
refrigerant pipe 14 may be led out from the back surface sides of theoutdoor unit 11 and thechiller unit 12. That is, in this embodiment, the lead-out directions of theoutdoor unit 11 and thechiller unit 12 may be unified (regulated). In this case, the connection work of therefrigerant pipe 14 between theoutdoor unit 11 and thechiller unit 12 can be facilitated, and the maintenance performance can be enhanced. In addition, in thechiller unit 12, water-medium-pipe throughholes back panel 82 as shown inFigs. 3 and6 , and thewater medium pipe 61 is led in and out at the back side of thechiller unit 12 through the water-medium-pipe throughholes refrigerant pipe 14 and thewater medium pipe 61 are unified, and the connection work of connecting thewater medium pipe 61 to the water supply pipe extending from the outside can be facilitated. - Still furthermore, according to this embodiment, as shown in
Fig. 4 , the width H1 in the depth direction of theoutdoor unit 11 and the width H2 in the depth direction of thechiller unit 12 are set to be substantially equal to each other, whereby the sense of unity between theoutdoor unit 11 and thechiller unit 12 is enhanced and the exterior appearance is enhanced. In addition, therefrigerant pipe 14 between the refrigerant-pipe throughholes holes refrigerant pipes 14 can be facilitated and the cost can be reduced. -
Fig. 5 is a perspective view showing the chiller unitmain body 77 when viewed from a side at which theelectrical component box 78 is disposed, andFig. 6 is a perspective view showing the chiller unitmain body 77 when viewed from a side at which theelectrical component box 78 is not disposed. InFigs. 5 and6 , the side panels constituting the side surface of the chiller unitmain body 77 and the top panel constituting the upper surface of the chiller unitmain body 77 are detached from the chiller unitmain body 77. Aback panel 82 as a part of the panel provided to the back surface of the chiller unitmain body 77 are secured to the chiller unitmain body 77 for convenience of description. - As shown in
Figs. 5 and6 , the chiller unitmain body 77 is formed substantially in a rectangular parallelepiped shape, and has aframe 83 constituting the respective side portions of the chiller unitmain body 77. Theframe 83 has acenter lateral frame 84 which is provided at the substantially center position in the height direction of the chiller unitmain body 77 so as to extend in the horizontal direction, and twopartition plates center lateral frame 84. The inside of the chiller unitmain body 77 is partitioned into upper and lower stages by thepartition plates lateral frames center lateral frame 84 at the side portions of the chiller unitmain body 77 so as to be bridged between vertically-extending frames. - The
electrical component box 78 described above and platetype heat exchangers main body 77 which is partitioned by thepartition plates type heat exchangers support plates Fig. 5 , thesupport plate 87a is not illustrated) to the upperlateral frames main body 77 while mounted and supported on thepartition plate - Here, when the plate
type heat exchangers upper stage chamber 86, there is a risk that the center of gravity of the chiller unitmain body 77 is shifted to a higher position as compared with the case where the platetype heat exchangers main body 77 itself may be lost. In view of the foregoing risk, according to this embodiment, the platetype heat exchangers upper stage chamber 86 in consideration of the total weight balance of the chiller unitmain body 77. That is, the platetype heat exchanger 62a is fixed at the front side of the upperlateral frame 85a disposed at one side portion of the chiller unitmain body 77, and the platetype heat exchanger 62b is fixed at the back side of the upperlateral frame 85b disposed at the other side of the chiller unitmain body 77 so that the platetype heat exchangers upper stage chamber 86 so that the weight balance of the chiller unitmain body 77 is kept). Accordingly, in theupper stage chamber 86, the platetype heat exchangers main body 77 can be prevented from being displaced and thus the safety of the chiller unit main body can be secured. Accordingly, when the chiller unitmain body 77 is transported to an installation place or mounted on the vibration-proof table 70, thechiller unit 12 can be moved while stabilized, and thus the work can be facilitated. - The
water medium pipe 61 and the chiller-siderefrigerant pipe 14B are connected to the platetype heat exchangers water medium pipes 61 will be first described. - As shown in
Fig. 6 , the water-medium-pipe throughholes water medium pipe 61 penetrates are formed at the lower portion of theback panel 82, and thewater medium pipe 61 penetrates through the water-medium-pipe throughholes water medium pipe 61 is made to penetrate through the water-medium-pipe throughholes water medium pipe 61 comes into contact with the edges of the water-medium-pipe throughholes holes water medium pipe 61 is a pipe through which water medium flows, and it is larger in diameter and heavier in weight than therefrigerant pipe 14. However, by forming the water-medium-pipe throughholes back panel 82, the load imposed from thewater medium pipe 61 to theback panel 82 can be reduced. - In this embodiment, the flow-in side
water medium pipe 89 through which water medium to flow into the platetype heat exchangers hole 88a at the left side ofFig. 6 out of the two water-medium-pipe throughholes water medium pipe 90 through which water medium to flow out from the platetype heat exchangers hole 88b at the right side ofFig. 6 . - As shown in
Fig. 6 , the flow-in side water-medium pipe 89 introduced in the chiller unitmain body 77 through the water-medium-pipe throughhole 88a extends horizontally along thelower surface 91 of the chiller unitmain body 77 by a predetermined distance as shown inFig. 6 , and then is branched, at a branch point a1, into a pipe through which water medium to flow into the platetype heat exchanger 62a and a pipe through which water medium to flow into the platetype heat exchanger 62b flows. The respective branched pipes are connected to the connection portions a2, a3 formed at the upper portion of the platetype heat exchangers Figs. 5 and6 , the respective pipes are set not to extend to higher positions than the connection portions a2 and a3. That is, the flow-in side watermedium pipes 89 corresponding to the connection pipes to be connected to the platetype heat exchangers type heat exchangers - In the
chiller unit 12 in which the platetype heat exchangers water medium pipe 61 as in the case of the embodiment, it is required that the same flow amount of water medium flows into the respective platetype heat exchangers water medium pipe 61 to each of the platetype heat exchangers type heat exchangers type heat exchangers lower stage chamber 92 and the connection portion a2, a3 of the platetype heat exchanger water medium pipe 89 is branched in thelower stage chamber 92, and then the shape of the flow-in sidewater medium pipe 89 from the branch point till the connection point to the platetype heat exchanger water medium pipe 89 is set to be long. Accordingly, it is unnecessary to make the flow-in sidewater medium pipe 89 long in length by making thewater medium pipe 61 meander in a Japanese shrine-gate shape, and thus places at which air is trapped can be excluded from the passage of the flow-in side water medium pipe 8, and the work of releasing air is unnecessary, so that the maintenance performance can be enhanced. - Particularly, in this embodiment, the flow-in side
water medium pipe 89 serving as a flow dividing pipe is set so as not to extend to a position higher than the connection portions a2, a3 of the platetype heat exchangers water medium pipe 89 is designed like the shape of a Japanese shrine-gate to connect the flow-in sidewater medium pipe 89 to the connection portions a2, a3, and thus air can be prevented from being trapped at the portion formed like the shape of the Japanese shrine-gate in the flow-in sidewater medium pipe 89. - Furthermore, in this embodiment, the plate
type heat exchangers upper stage chamber 86, and thus the space can be secured in thelower stage chamber 92. The pipes for the flow division such as the flow-in sidewater medium pipe 89, etc. are collectively provided in thelower stage chamber 92, so that the space can be effectively used. - The flow-out side water
medium pipes 90 through which water medium flowing out from the platetype heat exchangers Fig. 6 ) and the connection portion a5 (Fig. 5 ) which are formed at the lower side of the platetype heat exchangers Fig. 5 ) of thelower stage chamber 92 in which the space is secured. Furthermore, the jointed flow-out sidewater medium pipe 90 is formed to extend substantially horizontally along thelower surface 91 to the water-medium-pipe throughhole 88b, passed through the water-medium-pipe throughhole 88b and then led out to the outside of thechiller unit 77. Here, in this embodiment, the platetype heat exchangers upper stage chamber 86, so that the large space can be secured in thelower stage chamber 92. Accordingly, the flow-out side watermedium pipes 90 can be smoothly joined to each other by effectively using the space of thelower stage chamber 92 without extending the flow-out side watermediumpipes 90 to a predetermined position to join together by making the flow-out side watermedium pipes 90 meander. - As in the flow-in side
water medium pipe 89, the flow-out side watermedium pipes 90 serving as the connection pipes connected to the platetype heat exchangers type heat exchangers water medium pipe 89, it is unnecessary that the flow-out side watermedium pipes 90 are designed like the shape of the Japanese shrine-gate to connect the flow-out side watermedium pipes 89 to the connection portions a4, a5, and thus air can be prevented from being trapped at the portion formed like the shape of the Japanese shrine-gate in the flow-out side watermedium pipes 90. -
Fig. 7 is a top view showing the portion of the flow-out sidewater medium pipe 90 which extends substantially horizontally along thelower surface 91 to the water-medium-pipe throughhole 88b,Fig. 8 is a cross-sectional view taken along a line of VIII-VIII ofFig. 7 , andFig. 9 is a front view showing the state that aflow switch 93 described later is secured to the flow-out sidewater medium pipe 90. - As shown in
Figs. 7 an 8, the diameter H3 of the flow-out sidewater medium pipe 90 at the surrounding portion of the joint point a6 is set to be larger than the diameter H4 of the flow-out sidewater medium pipe 90 at the portion which is located at the upstream side of the H3 portion with respect to the joint point a6. Accordingly, water media from the platetype heat exchangers water medium pipe 90. Furthermore, as shown inFigs. 7 an 8, apenetration pipe 90b having a larger diameter than the diameter H3 penetrates through the water-medium-pipe throughhole 88b while supported by the surrounding portion of the throughhole 88b, and the tip of the flow-out sidewater medium pipe 90 is screwed into thepenetration pipe 90b. With this construction, the worker or the like can easily lead the flow-out side watermedium pipes 90 to the outside of the chiller unitmain body 77 by executing the work of screwing the tip of the flow-out sidewater medium pipe 90 into thepenetration pipe 90b. - As shown in
Figs. 5 ,7 and8 , the portion of the flow-out sidewater medium pipe 90 which extends substantially horizontally along thelower surface 91 is provided with a paddletype flow switch 93. Theflow switch 93 detects whether water medium flows through the flow-out sidewater medium pipe 90, thereby determining whether the water medium in the pipe freezes or not. As shown inFigs. 8 and9 , theflow switch 93 is provided with apaddle 94 extending into the inside of the flow-out sidewater medium pipe 90. The water medium impinges against thepaddle 94 while the water medium flows through the flow-out sidewater medium pipe 90, whereby thepaddle 94 is displaced to the downstream side of the water medium, and a contact point (not shown) provided to theflow switch 93 is connected, whereby a signal indicating the flow of the water medium is transmitted to the control electrical equipment of theelectrical component box 78. - The
flow switch 93 is tightly screwed into and fixed to thescrew port 90a provided at the upper portion of the flow-out sidewater medium pipe 90 with no clearance so as to prevent leakage of water medium from the fixing place of theflow switch 93. Thispaddle 94 is formed of a thin member having a substantially rectangular shape in front view (Fig. 9 ), and thepaddle 94 extends vertically downwardly in the flow-out sidewater medium pipe 90, and surely impinges against the water medium flowing in the pipe. The shape of thepaddle 94 ofFig. 9 is an example, and the shape and length of thepaddle 94 may be properly changed in accordance with the application. - Here, when the
flow switch 93 is actuated with high precision, it is desired that thepaddle 94 is arranged vertically to the flow direction of the water medium. In this embodiment, as described above, theflow switch 93 is provided to the flow-out sidewater medium pipe 90 extending substantially horizontally, and thus thepaddle 94 extending vertically downwardly in accordance with the gravitational force is perpendicular to the direction of the water medium flowing in the pipe, whereby the paddletype flow switch 93 can be actuated with high precision. - Furthermore, in this embodiment, the plate
type heat exchangers upper stage chamber 86, thereby securing the space in thelower stage chamber 92, ad theflow switch 93 is provided in thelower stage chamber 92 in which the space concerned is secured. Therefore, maintenance can be done on theflow switch 93 by actively using the space, and thus the maintenance performance of theflow switch 93 is enhanced. - The freezing of the water medium which is excessively cooled by the plate
type heat exchangers water medium pipe 61 at the flow-out side of the water medium from the platetype heat exchangers water medium pipe 90. According to this embodiment, in view of this phenomenon, theflow switch 93 is provided to thewater medium pipe 61, particularly to the flow-out sidewater medium pipe 90, and when freezing occurs in the water medium, the freezing can be rapidly detected by theflow switch 93. - When water medium in the
water medium pipe 61 is frozen and thus does not flow in thewater medium pipe 61 in thechiller unit 12, so that theflow switch 93 detects the freezing of the water medium in the pipe, the operation of thechiller unit 12 is temporarily stopped. Accordingly, thechiller unit 12 is prevented from being operated under the state that the water medium in thewater medium pipe 61 is frozen, so that thewater medium pipe 61, a pump (not shown) for making water medium flow through thewater medium pipe 61, etc. can be prevented from being damaged. - As described above, the
chiller unit 12 of this embodiment and theoutdoor unit 11 are arranged side by side on the vibration-proof table 70, and vibration occurring in connection with the actuation of theoutdoor unit 11 is slightly transmitted to thechiller unit 12. Here, theflow switch 93 detects on the basis of the displacement of thepaddle 94 whether water medium flows or not. In order to enhance the detection precision, it is required that the transmission of the vibration to thepaddle 94 is suppressed as much as possible. In view of this requirement, according to this embodiment, as shown inFigs. 5 ,7 and8 , asupport frame 91a (Figs. 5 and8 ) is fixed to thelower surface 91, a fixingmember 95 for fixing the flow-out sidewater medium pipe 90 and thesupport frame 91a is provided to thesupport frame 91a, and theflow switch 93 is provided to the flow-out sidewater medium pipe 90 in the neighborhood of the fixingmember 95. Accordingly, theflow switch 93 is provided at the portion of the flow-out sidewater medium pipe 90 which is fixed by the fixingmember 95 so that the vibration at this portion is suppressed at the maximum level. Accordingly, the transmission of the vibration to theflow switch 93 can be suppressed, and the detection precision of theflow switch 93 can be enhanced, so that the flow of the water medium can be substantially accurately detected. -
Reference numeral 95b represents the fixing member for fixing the flow-out sidewater medium pipe 90 to thelower surface 91 in the neighborhood of the water-medium pipe throughhole 88b. - Next, the construction of the chiller side
refrigerant pipe 14B will be described. - As shown in
Fig. 6 , refrigerant pipe throughholes refrigerant pipe 14B are formed in theback panel 82, and therefrigerant pipe 14 penetrates through the refrigerant pipe throughholes Fig. 3 as well as Fig. 60. When penetrating through the refrigerant pipe throughholes refrigerant pipe 14B comes into contact with the edges of the refrigerant pipe throughholes holes - As shown in
Fig. 6 , the chiller-siderefrigerant pipe 14B which is made to penetrate through the refrigerant pipe throughhole 81a and introduced into the chiller unitmain body 77 extends substantially horizontally along the lower surface, and then is connected to an electrically-operatedvalve 60 provided at the front side of thelower stage chamber 92. The electrically-operatedvalve 60 is a valve for controlling the flow rate (amount) of refrigerant flowing in the chiller-siderefrigerant pipe 14B. The electrically-operatedvalve 60 is connected to electronic equipment for control in theelectrical component box 78 through a wire (not shown) so that signals can be communicated therebetween, and the opening/closing state of the electrically-operated valve is controlled by the electronic equipment for control. - As shown in
Figs. 5 and6 , the electrically-operatedvalve 60 is disposed below theelectrical component box 78. Theelectrical component box 78 is wound by aheat insulating member 96 so that the effect of the temperature at the outside of theelectrical component box 78 is prevented from being transmitted to the electrical equipment provided in theelectrical component box 78. Therefore, the electrical equipment in theelectrical component box 78 can be prevented from being adversely affected by the outside temperature, and also the temperature of the surface of theelectrical component box 78 is also prevented from being extremely lower than the temperature of the surrounding of theelectrical component box 78, so that dew condensation water is prevented fromadhering to the surface of theelectrical component box 78. In this embodiment, the electrically-operatedvalve 60 is disposed below theelectrical component box 78 for which adhesion of dew condensation water is prevented. Accordingly, theelectrical component box 78 serves as a roof, so that dew condensation water occurring in the chiller unitmain body 77 can be prevented from dropping to the electrically-operatedvalve 60. Particularly, it is unnecessary to provide a special member such as a roof having a mechanism for preventing dew condensation water, an enclosure member for covering the electrically-operatedvalve 60 or the like in order to prevent dew condensation water from dropping to the electrically-operatedvalve 60, and the dropping of dew condensation water is prevented by using existing equipment, so that the cost can be reduced. - Furthermore, the physical distance between the electrically-operated
valve 60 and theelectrical component box 78 connected to the electrically-operatedvalve 60 through a wire is nearer, and thus the distance of the wire between the electrically-operatedvalve 60 and theelectrical component box 78 can be shortened. Therefore, the cost can be reduced and also loose or slack of the wire can be prevented, so that the state of the wire can be prevented from being complex. - The chiller-side
refrigerant pipe 14B led out from the electrically-operatedvalve 60 is branched at a branch point b1 (Fig. 5 ) in thelower stage chamber 92 in which the space is secured, and the branched pipes are connected to the connection portion b2 (Fig. 6 ) and the connection portion b3 (Fig. 5 ) which are formed at the lower portions of the platetype heat exchangers refrigerant pipes 14B used for diversion of refrigerant are collectively disposed at thelower stage 92. In this embodiment, as described above, the platetype heat exchangers upper stage chamber 86, and thus the chiller-siderefrigerant pipe 14B can be branched by using the space formed in thelower stage chamber 92 while the flow rate of the refrigerant flowing through the chiller-siderefrigerant pipe 14B is kept adjustable. The chiller-siderefrigerant pipes 14B which are connected to the connection portion b4 (Fig. 5 ) and the connection portion b5 (Fig. 6 ) of the platetype heat exchangers Fig. 5 ), and then extend to the refrigerant pipe throughhole 81b. As in the case of thewater medium pipes 61, the chiller-siderefrigerant pipes 14B are collectively disposed in the space formed in thelower stage chamber 92, and also arranged so as not to extend to positions higher than the top portions of the platetype heat exchangers - As described above, according to this embodiment, the
outdoor unit 11 and thechiller unit 12 are arranged side by side, and theelectrical component box 74 is disposed at the front surface side of the outdoor unitmain body 76 while theelectrical component box 78 is disposed at the front surface side of thechiller unit 12. Therefore, the worker can easily access theelectrical component boxes electrical component boxes front panel 75 of theoutdoor unit 11 and thefront panel 79 of thechiller unit 12. Therefore, the outdoor 11 and thechiller 12 can be smoothly subjected to maintenance in cooperation with each other, and thus the maintenance performance can be enhanced. - Furthermore, according to this embodiment, when maintenance is done on both the
electrical component box 78 of thechiller unit 12 and theelectrical component box 74 of theoutdoor unit 11 at the same time, the worker can access theelectrical component boxes - Still furthermore, the
refrigerant pipe 14 is led out from the respective back sides of theoutdoor unit 11 and thechiller unit 12. That is, in this embodiment, the lead-out direction of therefrigerant pipe 14 is unified between theoutdoor unit 11 and thechiller unit 12. Therefore, the connection work of the refrigerant pipe between theoutdoor unit 11 and thechiller unit 12 is facilitated, and the maintenance performance is enhanced. At the same time, in thechiller unit 12, as shown inFig. 3 , the water medium pipe throughholes back panel 82, thewater medium pipe 61 is led out from the back side through the water medium pipe throughholes refrigerant pipe 14 and thewater medium pipe 61 are unified, and the connection work between thewater medium pipe 61 and the water supply pipe extending from the outside is facilitated. - According to this embodiment, the electrically-operated
valve 60 is disposed below theelectrical component box 78 in which adhesion of dew condensation water is prevented by winding theheat insulating member 96 around theelectrical component box 78. Therefore, dew condensation water occurring in the chiller unitmain body 77 can be prevented from dropping to the electrically-operatedvalve 60 by theelectrical component box 78 serving as a roof. Particularly, it is unnecessary to provide a special member such as a roof having a mechanism for preventing dew condensation water, an enclosure member for covering the electrically-operatedvalve 60 or the like in order to prevent dew condensation water from dropping to the electrically-operatedvalve 60, and the dropping of dew condensation water is prevented by using existing equipment, so that the cost can be reduced. - Furthermore, according to this embodiment, the width H1 in the depth direction of the
outdoor unit 11 and the width H2 in the depth direction of thechiller unit 12 are set to be substantially equal to each other as shown inFig. 4 . Accordingly, the sensation of unity between theoutdoor unit 11 and thechiller unit 12 is enhanced, and the exterior appearance is enhanced. - In this embodiment, the
chiller unit 12 and theoutdoor unit 11 are arranged side by side on the vibration-proof table 70. This construction suppresses the adverse effect on theoutdoor unit 11 and thechiller unit 12 which is caused by vibration occurring under operation of theoutdoor unit 1. - As described above, in this embodiment, the two plate
type heat exchangers upper stage chamber 86 of the chiller unit main body so as to be spaced from each other, and refrigerant flowing in the chiller-siderefrigerant pipe 14B and water medium flowing in thewater medium pipe 61 are split to the platetype heat exchangers lower stage chamber 92 in which the space is secured, thewater medium pipe 61 is branched and the branched pipes are arranged so as not to extend to portions higher than the top portions of the platetype heat exchangers - Here, with respect to the
chiller unit 12 in which the platetype heat exchangers water medium pipe 61 as described with reference to this embodiment, the same flow rate (amount) of water medium is required to flow into each of the platetype heat exchangers water medium pipe 61 to the platetype heat exchangers type heat exchangers chiller unit 12 of the related art, thewater medium pipe 61 is arranged in a great meandering shape so that the distance from the branch point of thewater medium pipe 61 to the platetype heat exchanger - However, in this embodiment, the plate
type heat exchangers lower stage chamber 92. The flow-in sidewater medium pipe 89 is branched in the thus-secured space, and also the distance between the branch point and the upper portion of the platetype heat exchanger water medium pipe 61 and the platetype heat exchanger water medium pipe 89 is branched in thelower stage chamber 92 and then the long distance is secured, the shape of the flow-in sidewater medium pipe 89 from the branch point to the connection portion thereof with the platetype heat exchanger water medium pipe 61 in a meandering shape, and portions at which air is trapped in the passage of the flow-in sidewater medium pipe 89 can be excluded. Therefore, the air releasing work is not required and the maintenance performance can be enhanced. - Furthermore, in this embodiment, the plate
type heat exchangers support plates Fig. 5 , thesupport plate 87a is not shown) while mounted and supported on thepartition plates type heat exchangers main body 77 under the state that no wobbling occurs in the vertical and horizontal directions. - Still furthermore, in this embodiment, the plate
type heat exchangers upper stage chamber 86 in consideration of the overall weight balance of the chiller unitmain body 77. That is, the platetype heat exchanger 62a is fixed to the front surface side of the upperlateral frame 85a disposed at one side portion of the chiller unitmain body 77, and the platetype heat exchanger 62b is fixed to the back surface side of the upperlateral frame 85b disposed at the other side portion while facing the platetype heat exchanger 62a. Accordingly, In theupper stage chamber 86, the platetype heat exchangers main body 77 is prevented from being displaced, so that stability of the chiller unit main body is secured. Accordingly, thechiller unit 12 can be moved under a stable and the work can be facilitated particularly when the chiller unitmain body 77 is transported to a place where it is installed or when the chiller unitmain body 77 is mounted on the vibration-proof table 70. - Still furthermore, in this embodiment, the water medium pipe through
holes water medium pipe 61 penetrates are formed at the lower portion of theback panel 82, and thewater medium pipe 61 penetrates through the water medium pipe throughholes water medium pipe 61 penetrates through the water medium pipe throughholes water medium pipe 61 comes into contact with the edges of the water medium pipe throughholes water medium pipe 61 is a pipe through which water medium flows, and it is designed to be larger in diameter and heavier in weight than therefrigerant pipe 14. The water medium pipe throughholes back panel 82, whereby the load imposed on theback panel 82 from thewater medium pipe 61 can be reduced. - In the above-described embodiment, the
chiller unit 12 has the two electrically-operated valves and the two plate type heat exchangers. However, the numbers of the electrically-operated valve and the plate type heat exchangers are not limited to those of the above embodiment, and these numbers may be set to three or more. In the following description, an embodiment of thechiller unit 12 having three electrically-operated valves and three plate type heat exchangers will be described. - In the description of this embodiment, the same constituent elements as the first embodiment are represented by the same reference numerals, and the description thereof is omitted.
-
Fig. 10 is a refrigerant circuit diagram showing a refrigeratingmachine 10 having thechiller unit 12 according to this embodiment. - In the
chiller unit 12 of this embodiment, three electrically-operatedvalves 60 are provided in parallel with respect to the chiller-siderefrigerant pipe 14B as shown inFig. 10 . Furthermore, three platetype heat exchangers refrigerant pipe 14B and thewater medium pipe 61, and a larger amount of cold water or hot water can be generated as compared with the first embodiment. - Specifically, after the flow-in side
water medium pipe 89 is branched at the branch point c1, the respective branched pipes are connected to the connection portion c2 of the platetype heat exchanger 62c, the connection portion c3 of the plattype heat exchanger 62d and the connection portion c4 of the platetype heat exchanger 62e. Furthermore, the flow-outside branch pipes 90 connected to the connection portion c5 of the platetype heat exchanger 62c, the connection portion c6 of the platetype heat exchanger 62d and the connection portion c7 of the platetype heat exchanger 62e join together at the joint point c8, and then are led out to the outside of thechiller unit 12. - The chiller-side
refrigerant pipe 14B connected to the electrically-operatedvalve 60 is branched at the branch point d1, and then the respective branched pipes are connected to the connection portion d2 of the platetype heat exchanger 62c and the connection portion d4 of the platetype heat exchanger 62d. Furthermore, the chiller-siderefrigerant pipes 14B connected to the connection portion d5 of the platetype ht exchanger 62c, the connection portion d6 of the platetype heat exchanger 62d and the connection portion d7 of the platetype heat exchanger 62e join together at the branch point d8, and then are connected to the outdoorrefrigerant pipe 14A. -
Fig. 11 is a perspective view showing the chiller unitmain body 77 when the chiller unitmain body 77 is viewed from a side at which theelectrical component box 78 is disposed, andFig. 12 is a perspective view showing the chiller unitmain body 77 when the chiller unitmain body 77 is disposed at a side at which theelectrical component box 78 is disposed. Thechiller unit 12 of this embodiment is juxtaposed with theoutdoor unit 11 on the vibration-proof table 70 (seeFigs. 2 and3 ), and theelectrical component box 78 is provided at the front surface side. Therefore, as in the case of the first embodiment, the worker can simultaneously and easily access theelectrical component box 74 of theoutdoor unit 11 and theelectrical component box 78 of thechiller unit 12. - As shown in
Figs. 11 and12 , in this embodiment, all the platetype heat exchangers upper stage chamber 86. These platetype heat exchangers support plate 98 while mounted and fixed on thepartition plate 99a. Furthermore, in this embodiment, theflow switch 93 may not be provided. - This embodiment achieves the same effect as the first embodiment. Specifically, the branch point of the flow-in side
water medium pipe 89 is provided in thelower stage chamber 92, and the respective branched flow-in side watermedium pipes 89 are arranged to extend substantially linearly and connect to the connection portions c2, c3, c4 of the upper portions of the platetype heat exchangers water medium pipe 61 can be excluded while the apparatus can be adjusted so that the same amount of water medium flows into the platetype heat exchangers valves 60 are disposed below theelectrical component box 78, and thus dew condensation water can be prevented from dropping to the electrically-operatedvalve 60 while the existingelectrical component box 78 serves as a roof. - The present invention is not limited to the above embodiments, and various modification and applications may be made without departing from the subject matter of the present invention.
- For example, in the above embodiments, the
chiller unit 12 is equipped with two or three plate type heat exchangers. However, the number of the plate type heat exchangers is not limited to these values, and it may be properly changed in accordance with the amount (volume) of cold water or hot water to be generated. - Furthermore, in this embodiment, the inside of the chiller unit
main body 77 is separated into theupper stage chamber 86 and thelower stage chamber 92 by thepartition plate 99a. However, it is unnecessary that the inside of the chiller unitmain body 77 is separated into the upper andlower stage chambers main body 77.
Claims (8)
- A chiller unit having a chiller unit main body comprising:a plate type heat exchanger unit for performing heat exchange between refrigerant supplied from an outdoor unit through a refrigerant pipe and water medium supplied from the outside through a water refrigerant pipe to generate cold or hot water;an electrical component box that includes electronic equipment and is disposed at the front surface side of the chiller unit main body and surrounded by a heat insulating member; andan electrically-operated valve that is disposed below the electrical component box and controls a flow rate of refrigerant flowing through the refrigerant pipe of the chiller unit main body, wherein the refrigerant pipe and the water medium pipe connected to the plate type heat exchanger unit are lead out to the back surface side of the chiller unit main body, and a refrigerant pipe of the chiller unit main body is connectable to the refrigerant pipe from the outdoor unit at the back surface side.
- The chiller unit according to claim 1, wherein the outdoor unit and the chiller unit main body are arranged side by side and the width in the depth direction of the chiller unit main body and the width in the width direction of the outdoor unit are set to be substantially equal to each other.
- The chiller unit according to claim 1, wherein the chiller unit main body and the outdoor unit are mounted on a vibration-proof table.
- A chiller unit having a chiller unit main body comprising:a housing having an upper stage portion and a lower stage portion;a plate type heat exchanger unit for performing heat exchange between refrigerant supplied from an outdoor unit through a refrigerant pipe and water medium supplied from the outside through a water medium pipe to generate cold or hot water; anda pipe group connected to the refrigerant pipe from the outdoor unit and the water medium pipe from the outside to supply the refrigerant and the water medium to the plate type heat exchanger unit, wherein the pipe group supplies the refrigerant and the water medium to the plate type heat exchanger unit while splitting the flow of each of the refrigerant and the water medium, the pipe group is collectively disposed in the lower stage portion of the chiller unit main body, and the pipe group is connected to the plate type heat exchanger unit so that the pipe group is located to be equal to or lower than the top portion of the plate type heat exchanger unit in height.
- The chiller unit according to claim 4, wherein the chiller unit main body has a support table substantially at the center portion in the height direction thereof, and the plate type heat exchanger unit is mounted on the support table and also secured to a side portion of the chiller unit main body through a support plate.
- The chiller unit according to claim 4, wherein the plate type heat exchanger unit comprises a plurality of plate type heat exchangers that are arranged so as to be spaced from one another and secured to counter-side portions of the chiller unit main body so that the weight balance of the whole chiller unit is kept.
- The chiller unit according to claim 4, wherein a through hole through which the water medium pipe is led out from the chiller unit main body is provided at the lower portion of the back surface of the chiller unit main body.
- A chiller unit having a chiller unit main body that is disposed to be juxtaposed with an outdoor unit and performs heat-exchange between refrigerant supplied from the outdoor unit and water medium supplied from the outside to generate cold or hot water, wherein a refrigerant pipe and a water medium pipe connected to the plate type heat exchanger are led out to the back surface side of the chiller unit main body, a refrigerant pipe of the chiller unit main body and a refrigerant pipe of the outdoor unit are connectable to each other at the back surface side concerned, an electrical component box wounded by a heat insulating member is disposed at the front surface side of the chiller unit main body and an electrically-operated valve for controlling a flow rate of refrigerant is disposed below the electrical component box.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008079697A JP2009236340A (en) | 2008-03-26 | 2008-03-26 | Chiller unit |
JP2008079698A JP2009236341A (en) | 2008-03-26 | 2008-03-26 | Chiller unit |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2110627A2 true EP2110627A2 (en) | 2009-10-21 |
EP2110627A3 EP2110627A3 (en) | 2017-07-12 |
Family
ID=40886578
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09004287.0A Withdrawn EP2110627A3 (en) | 2008-03-26 | 2009-03-25 | Chiller unit |
Country Status (3)
Country | Link |
---|---|
US (1) | US20090242172A1 (en) |
EP (1) | EP2110627A3 (en) |
KR (1) | KR101127348B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3165849A4 (en) * | 2014-07-02 | 2018-02-21 | Mitsubishi Electric Corporation | Heat source device and heat source system provided with heat source device |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6053405B2 (en) * | 2012-09-12 | 2016-12-27 | 三菱重工業株式会社 | Parallel type refrigerator control device, method and program |
EP3006843B1 (en) * | 2013-05-31 | 2018-04-11 | Mitsubishi Electric Corporation | Heat-medium conversion device, and air conditioner provided with heat-medium conversion device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004251486A (en) | 2003-02-18 | 2004-09-09 | Innotech Corp | Chiller device |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2076809A (en) * | 1933-10-30 | 1937-04-13 | Gen Motors Corp | Refrigerating apparatus |
US3079994A (en) * | 1956-01-30 | 1963-03-05 | Daimler Benz Ag | Heat transfer plate construction |
US3289428A (en) * | 1965-04-06 | 1966-12-06 | Carrier Corp | Reverse cycle refrigeration system |
US3698555A (en) * | 1970-11-23 | 1972-10-17 | John R Conner | Self-cleaning filter system |
US5187950A (en) * | 1992-02-28 | 1993-02-23 | Weldon Mark P | Door mounted cooling apparatus |
US6131398A (en) * | 1995-11-07 | 2000-10-17 | Alfa Laval Agri Ab | Apparatus and method for cooling a product |
DE19720842C2 (en) * | 1997-05-17 | 1999-03-11 | Bodenseewerk Geraetetech | High temperature protection device for an electronic device |
US5937663A (en) * | 1997-12-23 | 1999-08-17 | Yang Fan Development Co., Ltd. | Multipurpose heat pump system |
DE19812042A1 (en) * | 1998-03-19 | 1999-09-30 | Harting Kgaa | Housing for receiving electrical and / or electronic components |
US6082131A (en) * | 1998-10-20 | 2000-07-04 | Hoshizaki Denki Co., Ltd. | Refrigerator |
US6238282B1 (en) * | 1999-11-30 | 2001-05-29 | General Electric Company | Locomotive cabin ventilation apparatus and method |
JP2002130743A (en) * | 2000-10-30 | 2002-05-09 | Mitsubishi Heavy Ind Ltd | Outdoor heat exchanger unit structure, outdoor unit, and gas heat pump type air conditioner |
JP4236477B2 (en) | 2003-02-18 | 2009-03-11 | イノテック株式会社 | Chiller device |
JP4434821B2 (en) | 2004-04-12 | 2010-03-17 | 三洋電機株式会社 | Air conditioner |
WO2007004460A1 (en) * | 2005-06-30 | 2007-01-11 | Toshiba Carrier Corporation | Heat pump hotwater supply device |
-
2009
- 2009-03-16 US US12/382,393 patent/US20090242172A1/en not_active Abandoned
- 2009-03-25 EP EP09004287.0A patent/EP2110627A3/en not_active Withdrawn
- 2009-03-25 KR KR1020090025171A patent/KR101127348B1/en not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004251486A (en) | 2003-02-18 | 2004-09-09 | Innotech Corp | Chiller device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3165849A4 (en) * | 2014-07-02 | 2018-02-21 | Mitsubishi Electric Corporation | Heat source device and heat source system provided with heat source device |
Also Published As
Publication number | Publication date |
---|---|
US20090242172A1 (en) | 2009-10-01 |
KR101127348B1 (en) | 2012-04-12 |
KR20090102683A (en) | 2009-09-30 |
EP2110627A3 (en) | 2017-07-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2105686A2 (en) | Chiller unit, refrigeration system having chiller unit and air conditioner having chiller unit | |
JP5626365B2 (en) | Air-conditioning system using outside air, its inside air unit, outside air unit, laminate | |
CN108139089B (en) | Outdoor unit and indoor unit of air conditioner | |
WO2012073746A1 (en) | Integrated air-conditioning system, and internal air unit, external air unit, and laminated body, thereof | |
JP2009236339A (en) | Chiller unit | |
US20100199700A1 (en) | Indoor unit for air conditioner | |
WO2011099628A1 (en) | Air conditioner | |
JP2011117677A (en) | Outdoor unit for air conditioning device | |
JP4721943B2 (en) | Air conditioner outdoor unit | |
EP2110627A2 (en) | Chiller unit | |
US20090229301A1 (en) | Refrigeration system | |
JP2009236341A (en) | Chiller unit | |
JP2009236340A (en) | Chiller unit | |
US11175063B2 (en) | Switching device for multi-split air conditioner and multi-split air conditioner having same | |
JP2012180946A (en) | Heat source unit | |
EP3222922B1 (en) | Heat pump | |
CN103234247B (en) | Machine room | |
JP2010159924A (en) | Refrigerator condensation unit | |
CN214664852U (en) | Air conditioner outdoor unit and pipe set assembly applied to same | |
CN215808934U (en) | Heat pump constant temperature dehydrating unit | |
CN214664854U (en) | Outdoor unit of air conditioner | |
JP3432978B2 (en) | Outdoor unit of air conditioner | |
JP2015152239A (en) | Outdoor unit of air conditioner | |
CN114623517A (en) | Air conditioner outdoor unit and pipe set assembly applied to same | |
CN114623518A (en) | Air conditioner outdoor unit and pipe set assembly applied to same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20090325 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA RS |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: F25D 23/00 20060101AFI20170405BHEP Ipc: F25B 43/04 20060101ALI20170405BHEP |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: F25B 43/04 20060101ALI20170410BHEP Ipc: F25D 23/00 20060101AFI20170410BHEP |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA RS |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: F25B 43/04 20060101ALI20170602BHEP Ipc: F25D 23/00 20060101AFI20170602BHEP |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR |
|
AKX | Designation fees paid |
Designated state(s): DE FR GB HU IT |
|
AXX | Extension fees paid |
Extension state: RS Extension state: AL Extension state: BA |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
INTG | Intention to grant announced |
Effective date: 20180823 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20190103 |