JP2009236340A - Chiller unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chiller unit improved in maintenance performance of the chiller unit disposed to be juxtaposed with an outdoor unit. <P>SOLUTION: In this chiller unit 12 disposed to be juxtaposed with the outdoor unit 11 and comprising a chiller unit body 77 having plate-type heat exchangers 62a, 62b performing heat-exchange between refrigerant supplied from the outdoor unit 11 and water medium supplied from the outside to generate cold or hot water, a chiller-side refrigerant pipe 14B and a water medium pipe 61 connected to the plate-type heat exchangers 62a, 62b are led out to a back surface side of the chiller unit body 77, the refrigerant pipe 61 of the chiller unit body 77 and the refrigerant pipe of the outdoor unit 11 are connectable at the back surface side, an electrical component box 74 on which a heat insulating material 96 is wound, is disposed at a front face side of the chiller unit body 77, and an electrically-operated valve 60 is for controlling a flow rate of the refrigerant is disposed at a lower part of the electrical component box 74. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a chiller unit including a heat exchanger that performs heat exchange between a refrigerant and an aqueous medium.

In general, a chiller device including a chiller unit main body connected to a refrigeration cycle is known (see, for example, Patent Document 1). This type of chiller device includes a plate heat exchanger that generates cold / hot water by exchanging heat between the refrigerant and the aqueous medium. This chiller device is installed side by side with the outdoor unit on the seismic stand, and on the seismic stand, the refrigerant pipe extending from the outdoor unit is connected to the refrigerant pipe of the plate type heat exchanger, and the plate type heat exchanger A water supply pipe extending from the outside is connected to the water pipe.
JP 2004-251486 A

However, in the conventional configuration, the outlet direction of the refrigerant pipe and water pipe extending from the chiller device and the outlet direction of the refrigerant pipe extending from the outdoor unit are not unified and vary, and therefore the refrigerant pipe of the chiller device, Connection work with the refrigerant pipe of the outdoor unit and connection work between the water pipe extending from the chiller device and the water supply pipe extending from the outside are difficult. Conventionally, an electric valve that controls the flow rate of the refrigerant is connected to the refrigerant pipe of the chiller device, and on the other hand, the plate type heat exchanger of the chiller device and the refrigerant pipe have a lot of dew condensation. An enclosure member for covering the motor-operated valve is required so as not to be hung on the motor-operated valve.
Furthermore, since the arrangement position of the electrical equipment box in the chiller device and the placement position of the electrical equipment box in the outdoor unit have been different, the electrical equipment box of the chiller device when the outdoor unit and the chiller device are arranged side by side. When the maintenance of the chiller device and the outdoor unit is performed at the same time, they cannot be accessed from the same direction, and the maintainability may be hindered.

  Therefore, the object of the present invention is to solve the problems of the conventional technology described above, improve the maintainability of the chiller unit arranged side by side with the outdoor unit, and without using an extra enclosure member, etc. An object of the present invention is to provide a chiller unit in which dew condensation water is not applied to an electric valve in the chiller unit.

  In order to achieve the above object, the present invention is arranged side by side with an outdoor unit, and generates cold / hot water by exchanging heat between a refrigerant supplied from the outdoor unit and an aqueous medium supplied from the outside. In the chiller unit including the chiller unit main body having the plate heat exchanger, the refrigerant pipe and the aqueous medium pipe connected to the plate heat exchanger are led out to the back side of the chiller unit main body. The refrigerant pipe of the chiller unit main body and the refrigerant pipe of the outdoor unit can be connected, and an electric box with a heat insulating material is disposed on the front side of the chiller unit main body, and the flow rate of the refrigerant is set below the electric box. A motorized valve to be controlled is arranged.

  Here, in the chiller unit of the above invention, the width in the depth direction of the chiller unit main body may be formed substantially the same as the width in the depth direction of the outdoor unit.

  In the chiller unit of the above invention, the chiller unit main body may be arranged side by side with the outdoor unit on the vibration isolation frame.

  In the chiller unit of the present invention, a through hole for leading the aqueous medium pipe from the chiller unit main body may be provided in a lower part of the back surface of the chiller unit main body.

  According to the present invention, the refrigerant pipe is led out from the back side of the chiller unit and the outdoor unit, thereby unifying the refrigerant pipe lead direction in the chiller unit and the outdoor unit, and the aqueous medium pipe is led out from the back side of the chiller unit. By doing so, the outlet directions of the refrigerant pipe and the aqueous medium pipe are also unified. Thereby, the connection operation | work of the refrigerant | coolant piping between an outdoor unit and a chiller apparatus becomes easy, and maintainability improves. Furthermore, since an existing member called an electrical box is configured as a roof so that condensed water is not applied to the motor-operated valve, it is not necessary to use an extra member such as an enclosure member. Furthermore, since both the outdoor unit and the chiller unit are provided with the electrical equipment box on the front side, it is possible to access each of the electrical equipment boxes from the same direction, thereby improving the maintainability.

Embodiments of the present invention will be described below with reference to the drawings.
<First Embodiment>
FIG. 1 is a refrigerant circuit diagram of a refrigeration apparatus 10 including a chiller unit 12 according to this embodiment.
As shown in FIG. 1, the refrigeration apparatus 10 includes an outdoor unit 11 and a chiller unit 12, and an outdoor refrigerant pipe 14 </ b> A of the outdoor unit 11 and a chiller side refrigerant pipe 14 </ b> B of the chiller unit 12 are closed valves 52. , 53 to form a refrigeration cycle 10A. In the following description, the outdoor refrigerant pipe 14A and the chiller side refrigerant pipe 14B are referred to as “refrigerant pipe 14” unless otherwise distinguished.

  A compressor 16 is disposed in the outdoor refrigerant pipe 14 </ b> A of the outdoor unit 11. The compressor 16 is driven by a gas engine 30 via a V-belt 27. An accumulator 17 is disposed on the suction side, and a four-way valve 18 is disposed on the discharge side via an oil separator 17A. Yes. The four-way valve 18 is provided with an outdoor heat exchanger 19, an outdoor expansion valve 24, and a dry core 25 in this order. A refrigerant system bypass pipe 26 is disposed to bypass the outdoor expansion valve 24, and the refrigerant system bypass pipe 26 is provided with a check valve 26 </ b> A that prevents the refrigerant from flowing backward. An outdoor fan 20 that blows air toward the outdoor heat exchanger 19 is disposed adjacent to the outdoor heat exchanger 19. Reference numeral 29 denotes a safety valve that releases the refrigerant pressure on the discharge side of the compressor 16 to the suction side of the compressor 16.

An air-fuel mixture is supplied from an engine fuel supply device 31 to the gas engine 30 that drives the compressor 16. In the engine fuel supply device 31, two fuel cutoff valves 33, a zero governor 34, a fuel adjustment valve 35, and an actuator 36 are sequentially disposed in a fuel supply pipe 32. Is connected to the gas engine 30. An air cleaner 36 </ b> A is connected to the fuel supply pipe 32.
An engine oil supply device 37 is connected to the gas engine 30. The engine oil supply device 37 is provided with an oil supply pump 40 in an oil supply pipe 38 and appropriately supplies engine oil to the gas engine 30. In addition, the engine oil supply device 37 includes a sub oil pan 37A and an oil level switch 37B.

Further, the outdoor unit 11 is provided with an engine cooling device 41 for circulating the cooling water to the gas engine 30 to recover the heat of the gas engine 30, and the cooling water flows through the engine cooling device 41. An electric cooler three-way valve 43 connected to the cooling water pipe 42 is provided.
A circulation pump 44 and an exhaust gas heat exchanger 45 are sequentially connected to one of the two outlets of the electric cooler three-way valve 43 to connect the electric cooler three-way valve 43, the circulation pump 44 and the exhaust gas heat exchanger 45. A path for returning the cooling water that has passed through the gas engine 30 to the gas engine 30 is formed by the piping path. Here, the exhaust gas heat exchanger 45 is a heat exchanger that performs heat exchange between the exhaust gas of the gas engine 30 and the cooling water. The exhaust gas heat exchanger 45 includes an exhaust gas for treating the exhaust gas. A muffler 46 and an exhaust top 47 are connected.

  The other outlet of the electric cooler three-way valve 43 is connected to the inlet of the cooling water electric three-way valve 48 by piping. One end of the exhaust heat recovery heat exchanger 49 is connected to one outlet of the cooling water electric three-way valve 48, and one end of the radiator 50 is connected to the other outlet of the cooling water electric three-way valve 48. Has been. Here, the exhaust heat recovery heat exchanger 49 is a heat exchanger that performs heat exchange between the refrigerant in the outdoor refrigerant pipe 14A and the cooling water in the cooling water pipe 42. In the present embodiment, plate-type heat exchange is performed. The vessel is applied. The radiator 50 cools the cooling water passing through the radiator 50 and is disposed adjacent to the outdoor fan 20 so that the blown air of the outdoor fan 20 is supplied. Reference numeral 51 denotes a cooling water reserve tank that stores cooling water to be appropriately supplied to the cooling water pipe 42.

On the other hand, the chiller unit 12 exchanges heat between the aqueous medium flowing into the chiller unit 12 through the aqueous medium pipe 61 and the refrigerant in the chiller side refrigerant pipe 14B connected to the outdoor refrigerant pipe 14A described above. It produces cold water or hot water, and is equipped with plate-type heat exchangers 62a and 62b that exchange heat between the refrigerant and the aqueous medium.
The aqueous medium pipe 61 includes an inflow side aqueous medium pipe 89 through which an aqueous medium flowing into the plate heat exchangers 62a and 62b flows, and an outflow side aqueous medium pipe 90 through which an aqueous medium flowing out from the plate type heat exchangers 62a and 62b flows. And. The inflow-side aqueous medium pipe 89 branches at the branch point a1, and one of the branched pipes is connected to the plate heat exchanger 62a at the connection part a2, and the other pipe is connected to the plate type heat exchange at the connection part a3. Connected to the device 62b. Furthermore, the outflow side aqueous medium pipe 90 connected to the connection part a4 of the plate heat exchanger 62a and the outflow side aqueous medium pipe 90 connected to the connection part a5 of the plate type heat exchanger 62b are at the junction a6. Merged and derived from the chiller unit 12.

In addition, two motor-operated valves 60 for controlling the flow rate 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 motor-operated valve 60 branches at the branch point b1, and then one of the branched pipes is connected to the plate heat exchanger 62a at the connection portion b2 and the other pipe is connected. The part b3 is connected to the plate heat exchanger 62b. Further, the chiller side refrigerant pipe 14B connected to the connection part b4 of the plate heat exchanger 62a and the chiller side refrigerant pipe 14B connected to the connection part b5 of the plate type heat exchanger 62b are connected at the branch point b6. ing.
Thus, in the chiller unit 12 of this embodiment, the two plate heat exchangers 62a and 62b are provided in parallel to the aqueous medium pipe 61, and the two plate heat exchangers 62a and 62b are chiller-side refrigerants. It is provided in parallel with the pipe 14B. For this reason, the temperature of the refrigerant flowing into each of the two plate heat exchangers 62a and 62b can be made substantially the same, and flows into each of the two plate heat exchangers 62a and 62b in parallel. The aqueous medium can be cooled or heated at substantially the same temperature, and cold water or hot water can be generated at a desired temperature with high accuracy.

2 to 4 are views showing a state when the outdoor unit 11 and the chiller unit 12 are installed outdoors, and FIG. 2 is a view of the outdoor unit 11 and the chiller unit 12 as viewed from the front side. 3 is a view seen from the back side, and FIG. 4 is a view schematically showing a view seen from above.
As shown in FIGS. 2 to 4, in this embodiment, the outdoor unit 11 and the chiller unit 12 are installed outside in a state where they are placed and fixed side by side on a dedicated vibration isolator base 70. As shown in FIGS. 2 and 3, the vibration isolator 70 includes a first plate 71 on which the outdoor unit 11 and the chiller unit 12 are placed and fixed, and a second plate disposed below the first plate 71. A buffer member 73 is interposed between the first plate 71 and the second plate 72, and the buffer member 73 absorbs vibrations generated during operation of the outdoor unit 11. . Due to this configuration, adverse effects on the outdoor unit 11 and the chiller unit 12 due to vibrations generated during operation of the outdoor unit 11 are mitigated.
Furthermore, since the outdoor unit 11 and the chiller unit 12 are installed side by side on the dedicated vibration isolator base 70, an operator or the like attaches the outdoor unit 11 and the chiller unit 12 to a predetermined position of the vibration isolator base 70. Thus, the installation work can be easily performed, and the work efficiency is improved.

As shown in FIGS. 2 and 4, an electrical equipment box 74 is provided on the front side of the outdoor unit main body 76 of the outdoor unit 11 in which electronic devices for controlling each device of the outdoor unit 11 are stored. The operator can easily access the electrical box 74 by removing the front panel 75 provided in front of the electrical box 74. Similarly, on the front side of the chiller unit main body 77 of the chiller unit 12, an electrical box 78 in which electronic devices for controlling each device of the chiller unit 12 are housed is provided (FIGS. 5 and 6 are also combined). 2), by removing the front panel 79 (FIG. 2) provided in front of the electrical box 78, the operator can easily access the electrical box 78. The control electronic device stored in the electrical box 74 and the control electronic device stored in the electrical box 78 are connected so as to be capable of signal communication by wiring (not shown), and these control electronic devices cooperate with each other. It is configured to control each device of the outdoor unit 11 and the chiller unit 12 by operating.
Here, the electrical boxes 74 and 78 are equipped with electronic devices and require a relatively large amount of maintenance, so that they are required to be easily accessible. Furthermore, since the control electronics of the electrical boxes 74 and 78 operate in cooperation, the electrical boxes 74 and 78 are required to be maintained at the same time. In the present embodiment, the outdoor unit 11 and the chiller unit 12 are arranged side by side on the anti-vibration mount 70, the electrical box 74 is on the front side of the outdoor unit body 76, and the electrical box 78 is on the front side of the chiller unit 12. Therefore, the operator can easily access the electrical boxes 74 and 78 by removing the front panel 75 of the outdoor unit 11 and the front panel 79 of the chiller unit 12, and the electrical boxes 74 and 78. Can be maintained at the same time.
Furthermore, according to this embodiment, when performing maintenance of the electrical box 78 of the chiller unit 12 and the electrical box 74 of the outdoor unit 11 simultaneously, the operator can access these electrical boxes 74 and 78 from the same direction. Improvement of maintainability is attempted.

Further, as shown in FIG. 3, refrigerant pipe through holes 80 a and 80 b through which the refrigerant pipe 14 penetrates are formed on the back surface of the outdoor unit main body 76, and the refrigerant pipe 14 is formed on the back panel 82 on the back surface of the chiller unit main body 77. Are formed through holes 81a and 81b for refrigerant piping. Then, the refrigerant pipe 14 led out from the outdoor unit main body 76 through the refrigerant pipe through holes 80a and 80b extends to the vicinity of the refrigerant pipe through holes 81a and 81b and through the refrigerant pipe through holes 81a and 81b. By being introduced into the chiller unit main body 77, the outdoor refrigerant pipe 14A (FIG. 1) and the chiller side refrigerant pipe 14B (FIG. 1) are connected. As described above, in the present embodiment, the refrigerant pipe 14 exposed to the outside is located on the back side of the outdoor unit main body 76 and the chiller unit main body 77, so that the outdoor unit in a state where it is installed on the antivibration mount 70. When the 11 and the chiller unit 12 are viewed from the front, the refrigerant pipe 14 becomes difficult to see, and the appearance is improved.
Further, the refrigerant pipe 14 is led out from the back side of each of the outdoor unit 11 and the chiller unit 12. That is, in this embodiment, the outlet direction of the refrigerant pipe 14 in the outdoor unit 11 and the chiller unit 12 is unified. For this reason, the connecting operation of the refrigerant pipe 14 between the outdoor unit 11 and the chiller unit 12 is facilitated, and the maintainability is improved. At the same time, in the chiller unit 12, as shown in FIG. 3, through holes 88a and 88b for aqueous medium piping are formed in the rear panel 82, and the aqueous medium piping 61 is connected via the through holes 88a and 88b for aqueous medium piping. Derived from the back side, the outlet direction of the refrigerant pipe 14 and the aqueous medium pipe 61 is unified, and the connection work between the aqueous medium pipe 61 and the water supply pipe extending from the outside is facilitated.
Furthermore, in this embodiment, as shown in FIG. 4, 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 formed so as to be substantially the same. The unity of the chiller unit 12 is enhanced and the appearance is improved. Further, the refrigerant pipe through holes 80a and 80b and the refrigerant pipe through holes 81a and 81b can be formed in a substantially straight line, so that the processing of the refrigerant pipe 14 and the cost can be reduced. It is illustrated.

FIG. 5 is a perspective view of the chiller unit main body 77 as viewed from the side where the above-described electrical box 78 is disposed, and FIG. 6 is a perspective view of the chiller unit body 77 as viewed from the side where the electrical box 78 is not disposed. It is. In these drawings, the side panel constituting the side surface of the chiller unit main body 77 and the top panel constituting the upper surface are removed. However, the back panel 82 which is a part of the panel provided on the back surface is attached for convenience of explanation.
As shown in FIGS. 5 and 6, the chiller unit main body 77 is formed in a substantially rectangular parallelepiped shape, and includes a frame 83 that constitutes a portion corresponding to each side of the chiller unit main body 77. The frame 83 includes a central horizontal frame 84 extending in the horizontal direction provided at a substantially central position in the height direction of the chiller unit main body 77. The central horizontal frame 84 has two partition plates extending horizontally. 99a, 99b (support frame) are fixed, and the interior of the chiller unit main body 77 is partitioned into upper and lower stages by these partition plates 99a, 99b. Further, on the side of the chiller unit main body 77, above the central lateral frame 84, horizontally extending upper lateral frames 85a and 85b are provided in a state of being stretched over a vertically extending frame.

In the upper chamber 86 (upper portion) formed in the upper stage of the chiller unit main body 77 partitioned by the partition plates 99a and 99b, the above-mentioned electrical box 78 is provided, and plate-type heat exchangers 62a and 62b are provided. ing. These plate-type heat exchangers 62a and 62b are mounted and supported on the partition plates 99a and 99b, and support plates 87a and 87b (in FIG. 5) are mounted on the upper horizontal frames 85a and 85b provided on the side portions. The support plate 87a is fixed via a not-shown), and is firmly attached to the chiller unit main body 77 in a state where no shaking occurs in the vertical direction and the horizontal direction.
Here, when plate-type heat exchangers 62a and 62b, which are heavier than other devices, are provided in the upper chamber 86, plate-type heat exchangers 62a and 62b are provided in the lower chamber 92 (lower portion), and In comparison, it is conceivable that the center of gravity of the chiller unit main body 77 moves upward and the stability of the chiller unit main body 77 itself is impaired. In view of this, in the present embodiment, the plate heat exchangers 62 a and 62 b are arranged in the upper chamber 86 in consideration of the weight balance of the entire chiller unit main body 77. That is, while fixing the plate-type heat exchanger 62a to the front side of the upper horizontal frame 85a disposed on one side of the chiller unit main body 77, in a state where the plate-type heat exchanger 62a is opposed to the plate-type heat exchanger 62a, The plate heat exchanger 62b is fixed to the back side of the upper horizontal frame 85b arranged on the other side. This prevents the plate-type heat exchangers 62a and 62b from being biased in the upper chamber 86, thereby preventing the center of gravity of the chiller unit main body 77 from being biased and ensuring the stability of the chiller unit main body. ing. This makes it possible to move the chiller unit 12 in a stable state when the chiller unit main body 77 is transported to a place where the chiller unit main body 77 is to be installed or when the chiller unit main body 77 is to be installed, thereby facilitating the work.

The aqueous medium pipe 61 and the chiller side refrigerant pipe 14B are connected to the plate heat exchangers 62a and 62b. First, the configuration of the aqueous medium pipe 61 will be described.
As shown in FIG. 6, in the lower part of the back panel 82, through holes 88a and 88b for aqueous medium piping 61 through which the aqueous medium pipe 61 passes are formed, and these aqueous medium piping through holes 88a and 88b are formed in the aqueous medium. The piping 61 has penetrated. At the time of penetration, the aqueous medium pipe 61 comes into contact with the edges of the aqueous medium pipe through holes 88a and 88b and is supported by the edges of the aqueous medium pipe through holes 88a and 88b. Here, the aqueous medium pipe 61 is a pipe through which the aqueous medium flows, and has a larger diameter and heavier than the refrigerant pipe 14, but the aqueous medium pipe through holes 88 a and 88 b are provided below the rear panel 82. Thus, the load applied from the aqueous medium pipe 61 to the back panel 82 is reduced.
In the present embodiment, out of the two aqueous medium pipe through holes 88a and 88b, the inflow side through which the aqueous medium flowing into the plate heat exchangers 62a and 62b flows into the left aqueous medium pipe through hole 88a in FIG. The aqueous medium pipe 89 penetrates, and the outflow side aqueous medium pipe 90 through which the aqueous medium flowing out from the plate heat exchangers 62a and 62b passes is penetrated through the right side aqueous medium pipe through hole 88b in FIG. Yes.

  The inflow side aqueous medium pipe 89 introduced into the chiller unit main body 77 through the aqueous medium pipe through hole 88a extends horizontally along the lower surface 91 of the chiller unit main body 77 as shown in FIG. After branching out, each branch pipe branches into a pipe through which the aqueous medium flowing into the plate heat exchanger 62a flows and a pipe through which the aqueous medium flows into the plate heat exchanger 62b at the branch point a1. It connects to the connection part a2, a3 formed in each upper part of plate type heat exchanger 62a, 62b. In that case, as shown in FIG.5 and FIG.6, each piping becomes a structure which does not extend to a position higher than the connection parts a2 and a3. That is, the inflow-side aqueous medium pipe 89 that is a connection pipe connected to the plate heat exchangers 62a and 62b is not positioned higher than the top of the plate heat exchangers 62a and 62b.

In the chiller unit 12 in which the plate-type heat exchangers 62a and 62b are provided in parallel to the aqueous medium pipe 61 as in the present embodiment, the flow rate is the same as that of each of the plate-type heat exchangers 62a and 62b. An aqueous medium is required to flow in. For this purpose, the distance from the branch point in the aqueous medium pipe 61 to the plate type heat exchangers 62a and 62b is secured as long as possible so that the aqueous medium having the same flow rate flows into the respective plate type heat exchangers 62a and 62b. Need to adjust. In the present embodiment, as described above, since the plate type heat exchangers 62a and 62b are provided in the upper chamber, the plate type heat exchanger 62a provided in the branch point a1 of the lower chamber 92 and the upper chamber 86 is provided. , 62b can be secured with a long distance from the connecting portions a2, a3. For this reason, after branching the inflow-side aqueous medium pipe 89 in the lower chamber 92, the inflow-side aqueous medium pipe 89 from the branch point to the connection point with the plate heat exchangers 62a and 62b is secured in a state where a long distance is secured. Can be formed in a substantially linear shape. Accordingly, it is not necessary to ensure a long length of the inflow side aqueous medium pipe 89 by meandering the aqueous medium pipe 61 like a torii, and it is possible to eliminate a place where air is accumulated in the path of the inflow side aqueous medium pipe 89. This eliminates the need for air removal work for air removal and improves maintainability.
In particular, in the present embodiment, the inflow-side aqueous medium pipe 89, which is a pipe used for diversion, is configured not to extend to a position higher than the connection parts a2 and a3 of the plate heat exchangers 62a and 62b. For this reason, by forming the inflow-side aqueous medium pipe 89 in a torii form, there is no need to connect the inflow-side aqueous medium pipe 89 to the connecting portions a2 and a3. It is possible to prevent air from accumulating in the formed portion.
In the present embodiment, the plate-type heat exchangers 62 a and 62 b are provided in the upper chamber 86, so that a space is secured in the lower chamber 92. Then, this space can be effectively used by providing the lower chamber 92 with pipes for branching such as the inflow-side aqueous medium pipe 89.

As shown in FIGS. 5 and 6, the outflow side aqueous medium pipe 90 through which the aqueous medium flowing out from the plate heat exchangers 62a and 62b flows is connected to the lower part of the plate type heat exchangers 62a and 62b. After being led out from the part a4 (FIG. 5) and the connecting part a5 (FIG. 6), the water is merged at a junction point a6 (FIG. 5) at a predetermined position of the lower chamber 92 where a space is secured. After extending substantially horizontally along the lower surface 91 toward the medium pipe through hole 88b, the medium pipe is led out of the chiller unit main body 77 through the aqueous medium pipe through hole 88b. Here, in this embodiment, since the plate-type heat exchangers 62a and 62b are arranged in the upper chamber 86, a large space is secured in the lower chamber 92, so that the outflow side aqueous medium pipe 90 flows out to join. The outflow side aqueous medium piping 90 can be smoothly joined by utilizing the space of the lower chamber 92 without causing the side aqueous medium piping 90 to meander and extend to a predetermined position.
Here, the outflow-side aqueous medium pipe 90 which is a connection pipe connected to the plate-type heat exchangers 62a and 62b is not positioned higher than the plate-type heat exchangers 62a and 62b, similarly to the inflow-side aqueous medium pipe 89. It has a configuration. Because of this configuration, like the inflow side aqueous medium pipe 89, it is not necessary to connect the outflow side aqueous medium pipe 90 to the connection portions a4 and a5 by forming the outflow side aqueous medium pipe 90 in a torii-like shape. It is possible to prevent air from accumulating in a portion formed in a torii-like shape in the side aqueous medium pipe 90.

FIG. 7 is a view of a portion of the outflow side aqueous medium pipe 90 that extends substantially horizontally along the lower surface 91 toward the through hole 88b for the aqueous medium pipe, as viewed from above, and FIG. FIG. 9 is a sectional view taken along the line VIII-VIII, and FIG.
As shown in FIGS. 7 and 8, the diameter H3 of the outflow-side aqueous medium pipe 90 downstream from the vicinity of the confluence point a6 is formed larger than the diameter H4 of the outflow-side aqueous medium pipe 90 upstream of the confluence point a6. Has been. Accordingly, the aqueous medium that has joined at the confluence point a <b> 6 and has an increased capacity flows smoothly through the outflow-side aqueous medium pipe 90. Further, as shown in FIGS. 7 and 8, the through pipe 90b having a diameter larger than the diameter H3 penetrates in a state supported by the aqueous medium pipe through hole 88b and flows out to the through pipe 90b. The tip of the side aqueous medium pipe 90 is in a screwed state. Due to this configuration, an operator or the like can easily lead out the outflow side aqueous medium pipe 90 to the outside of the chiller unit main body 77 by an operation of screwing the tip of the outflow side aqueous medium pipe 90 into the through pipe 90b.

  As shown in FIGS. 5, 7, and 8, a paddle type flow switch 93 is provided at a location extending substantially horizontally along the lower surface 91 in the outflow side aqueous medium pipe 90. The flow switch 93 is a switch for determining whether or not the aqueous medium in the pipe is frozen by detecting whether or not the aqueous medium is flowing in the outflow side aqueous medium pipe 90. FIG. And as shown in FIG. 9, the paddle 94 extended in the outflow side aqueous medium piping 90 is provided. While the aqueous medium flows in the outflow side aqueous medium pipe 90, the paddle 94 is displaced to the side in which the aqueous medium flows due to the collision of the aqueous medium with the paddle 94, and a contact (not shown) provided in the flow switch 93 Is connected, and a signal to that effect is transmitted to the control electronics of the electrical box 78.

The flow switch 93 is screwed into the screw-in port 90a provided in the upper part of the outflow-side aqueous medium pipe 90 without a gap, and the aqueous medium is prevented from leaking from the attachment location of the flow switch 93. Further, the paddle 94 is formed of a thin member having a substantially rectangular shape when viewed from the front (FIG. 9), and the paddle 94 extends vertically downward in the outflow side aqueous medium pipe 90 so that the aqueous medium flowing in the pipe is surely attached. It becomes the structure which collides. The shape of the paddle 94 in FIG. 9 is an example, and the shape and length can be changed as appropriate according to the application.
Here, when the flow switch 93 is accurately operated, it is desirable that the paddle 94 is provided perpendicular to the direction in which the aqueous medium flows. In the present embodiment, as described above, since the flow switch 93 is provided in the outflow-side aqueous medium pipe 90 extending substantially horizontally, the direction of the aqueous medium flowing in the pipe and the paddle 94 extending vertically downward according to the gravity is determined. As a result, the paddle type flow switch 93 can be operated with high accuracy.
In the present embodiment, as described above, the plate-type heat exchangers 62a and 62b are provided in the upper chamber 86, so that a space is secured in the lower chamber 92. However, the lower chamber 92 in which this space is secured. A flow switch 93 is provided. For this reason, the flow switch 93 can be maintained by utilizing the space, and the maintainability of the flow switch 93 is improved.

In addition, freezing of the aqueous medium that has been excessively cooled by the plate heat exchangers 62a and 62b starts sequentially from the aqueous medium pipe 61 that flows out of the plate heat exchangers 62a and 62b, that is, the outflow side aqueous medium pipe 90. Go. In view of this, in the present embodiment, the flow switch 93 is provided in the outflow-side aqueous medium pipe 90 in the aqueous medium pipe 61, and when the aqueous medium is frozen, the flow switch 93 quickly detects the freezing. It can be configured.
In addition, when the chiller unit 12 detects that the aqueous medium in the aqueous medium pipe 61 is frozen and does not flow in the pipe and the aqueous medium in the pipe is frozen by the flow switch 93, the operation of the chiller unit 12 is performed. It is configured to pause. Due to this configuration, the chiller unit 12 is prevented from operating while the aqueous medium is frozen in the aqueous medium pipe 61, and a pump (not shown) for flowing the aqueous medium pipe 61 and the water refrigerant is provided. Damage is prevented.

Further, as described above, the chiller unit 12 of the present embodiment is installed side by side with the outdoor unit 11 on the vibration isolating stand 70, and vibrations generated as the outdoor unit 11 operates are chilled by the chiller unit 12. It will be transmitted to some. Here, the flow switch 93 is a device that detects whether or not the aqueous medium is flowing due to the displacement of the paddle 94. In order to improve the detection accuracy, the vibration is prevented from being transmitted to the paddle 94 as much as possible. Is required. In view of this, in this embodiment, as shown in FIGS. 5, 7 and 8, a support frame 91 a (FIGS. 5 and 8) is fixed to the lower surface 91, and the outflow side aqueous medium pipe is attached to the support frame 91 a. 90 and a support frame 91a are provided, and a flow switch 93 is provided on the outflow side aqueous medium pipe 90 in the vicinity of the fixture 95. As a result, the flow switch 93 is provided in the outflow-side aqueous medium pipe 90 where the vibration is suppressed most by being fixed by the fixture 95, and the vibration is prevented from being transmitted to the flow switch 93. The detection accuracy of the switch 93 is improved, and the flow of the aqueous medium can be detected almost accurately.
Reference numeral 95b denotes a fixture for fixing the outflow side aqueous medium pipe 90 to the lower surface 91 in the vicinity of the through hole 88b for the aqueous medium pipe.

Next, the configuration of the chiller side refrigerant pipe 14B will be described.
As shown in FIG. 6, the rear panel 82 is formed with through holes 81a and 81b for the refrigerant pipe through which the chiller side refrigerant pipe 14B passes, and the through holes 81a and 81b for the refrigerant pipe are connected to the refrigerant pipe 14 as shown in FIG. (See also FIG. 3). When penetrating, the chiller side refrigerant pipe 14B comes into contact with the edges of the refrigerant pipe through holes 81a and 81b and is supported by the edges of the refrigerant pipe through holes 81a and 81b.
The chiller side refrigerant pipe 14B introduced into the chiller unit main body 77 through the refrigerant pipe through hole 81a extends substantially horizontally along the lower surface as shown in FIG. It is connected to a motor-operated valve 60 provided on the side. As described above, the motor-operated valve 60 is a valve for controlling the flow rate of the refrigerant flowing in the chiller-side refrigerant pipe 14B, and can perform signal communication with the control electronic device in the electrical box 78 by wiring not shown. The open / close state is controlled by this control electronic device.

As shown in FIGS. 5 and 6, the motor-operated valve 60 is disposed below the electrical box 78. This electrical equipment box 78 is configured by winding a heat insulating material 96 so that the influence of the temperature outside the electrical equipment box 78 is not transmitted as much as possible to the electronic equipment provided inside. For this reason, it is possible to prevent the adverse effect due to the external temperature from being transmitted to the electronic device, and the temperature of the surface of the electrical box 78 is extremely lowered with respect to the temperature around the electrical box 78 by the heat insulating material 96. This prevents the condensation water from adhering to the surface of the electrical box 78. In the present embodiment, since the electric valve 60 is disposed below the electrical component box 78 in which condensation water is prevented from being attached in this manner, the electrical component box 78 serves as a roof, and the inside of the chiller unit main body 77. It is prevented that the dew condensation water which generate | occur | produced in this is dripped at the motor operated valve 60. In particular, in order to prevent dripping water from dripping onto the motor-operated valve 60, existing equipment can be installed without specially providing a roof having a mechanism for preventing dew condensation water, an enclosure member covering the motor-operated valve 60, or the like. Since the above dripping is prevented by using, cost reduction is realized.
Furthermore, the physical distance between the motor-operated valve 60 and the electrical box 78 connected to the motor-operated valve 60 is reduced, and the distance between the motor-operated valve 60 and the electrical box 78 can be shortened. In addition to being able to down, it is possible to prevent the wiring from being loosened or loosened, and to prevent the wiring state from becoming complicated.

  The chiller side refrigerant pipe 14B led out from the motor-operated valve 60 branches at a branch point b1 (FIG. 5) in the lower chamber 92 where a space is secured, and the branched pipes are respectively connected to the plate heat exchangers 62a and 62b. Are connected to a connection part b2 (FIG. 6) and a connection part b3 (FIG. 5) formed in the lower part of the substrate. In the present embodiment, as described above, since the plate heat exchangers 62a and 62b are provided in the upper chamber 86, the refrigerant flowing through the chiller side refrigerant pipe 14B using the space formed in the lower chamber 92. The chiller-side refrigerant pipe 14B can be branched while maintaining the flow rate of the refrigerant in an adjustable state. On the other hand, the chiller side refrigerant pipe 14B connected to the connection part b4 (FIG. 5) and the connection part b5 (FIG. 6) of the plate heat exchangers 62a and 62b merges at the branch point b6 (FIG. 5), It extends toward the through-hole 81b for piping. And the chiller side refrigerant | coolant piping 14B is arrange | positioned collectively in the space formed in the lower chamber 92 similarly to the aqueous medium piping 61, and is extended to a position higher than the top part of plate type heat exchanger 62a, 62b. It has a configuration that does not.

As described above, in the present embodiment, the outdoor unit 11 and the chiller unit 12 are arranged side by side, the electrical box 74 is on the front side of the outdoor unit body 76, and the electrical box 78 is on the front side of the chiller unit 12. Since each is provided, the operator can easily access the electrical box 74, 78 by removing the front panel 75 of the outdoor unit 11 and the front panel 79 of the chiller unit 12, and the electrical box 74, 78 can be maintained simultaneously. For this reason, the outdoor unit 11 and the chiller unit 12 can be maintained smoothly in cooperation with each other, and the maintainability is improved.
Furthermore, according to this embodiment, when performing maintenance of the electrical box 78 of the chiller unit 12 and the electrical box 74 of the outdoor unit 11 simultaneously, the operator can access these electrical boxes 74 and 78 from the same direction. Improvement of maintainability is attempted.
Further, in the present embodiment, the refrigerant pipe 14 is led out from the back side of each of the outdoor unit 11 and the chiller unit 12. That is, in this embodiment, the outlet direction of the refrigerant pipe 14 in the outdoor unit 11 and the chiller unit 12 is unified. For this reason, the connecting operation of the refrigerant pipe 14 between the outdoor unit 11 and the chiller unit 12 is facilitated, and the maintainability is improved. At the same time, in the chiller unit 12, as shown in FIG. 3, through holes 88a and 88b for aqueous medium piping are formed in the rear panel 82, and the aqueous medium piping 61 is connected via the through holes 88a and 88b for aqueous medium piping. Derived from the back side, the outlet direction of the refrigerant pipe 14 and the aqueous medium pipe 61 is unified, and the connection work between the aqueous medium pipe 61 and the water supply pipe extending from the outside is facilitated.

  In addition, according to the present embodiment, since the motor-operated valve 60 is disposed below the electrical box 78 in which the condensed water is prevented from adhering when the heat insulating material 96 is wound, the electrical box 78 is attached to the roof. Thus, the condensed water generated in the chiller unit main body 77 is prevented from dripping onto the motor-operated valve 60. In particular, in order to prevent dripping water from dripping onto the motor-operated valve 60, existing equipment can be installed without specially providing a roof having a mechanism for preventing dew condensation water, an enclosure member covering the motor-operated valve 60, or the like. Since the above dripping is prevented by using, cost reduction is realized.

  Moreover, in this embodiment, it forms so that the width | variety H1 in the depth direction of the outdoor unit 11 and the width H2 in the depth direction of the chiller unit 12 may become substantially the same, and unity with the outdoor unit 11 and the chiller unit 12 is carried out. The feeling is enhanced and the appearance is improved.

  In the present embodiment, the chiller unit 12 and the outdoor unit 11 are arranged side by side on the antivibration mount 70. Due to this configuration, adverse effects on the outdoor unit 11 and the chiller unit 12 due to vibrations generated during operation of the outdoor unit 11 are mitigated.

  Further, in the present embodiment, the aqueous medium pipe through holes 88a and 88b through which the aqueous medium pipe 61 passes are formed in the lower portion of the back panel 82, and these aqueous medium pipe through holes 88a and 88b are connected to the aqueous medium pipe. 61 penetrates. During this penetration, the aqueous medium pipe 61 comes into contact with the edges of the aqueous medium pipe through holes 88a and 88b and is supported by the edges of the aqueous medium pipe through holes 88a and 88b. Here, the aqueous medium pipe 61 is a pipe through which the aqueous medium flows, and has a larger diameter and heavier than the refrigerant pipe 14, but the aqueous medium pipe through holes 88 a and 88 b are provided below the rear panel 82. Thus, the load applied from the aqueous medium pipe 61 to the back panel 82 is reduced.

<Second Embodiment>
In the first embodiment described above, the chiller unit 12 including two motor-operated valves and two plate-type heat exchangers has been described. However, in the present embodiment, three motor-operated valves and three plate-type heat exchangers are used. The chiller unit 12 provided with a vessel will be described.
In the description of the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
FIG. 10 is a refrigerant circuit diagram of the refrigeration apparatus 10 including the chiller unit 12 according to the present embodiment.
As shown in FIG. 10, in the chiller unit 12 according to the present embodiment, three motor-operated valves 60 are provided in parallel to the chiller side refrigerant pipe 14B. Furthermore, three plate type heat exchangers 62c, 62d, 62e are provided in parallel to the chiller side refrigerant pipe 14B and the aqueous medium pipe 61, and have a large capacity of cold water or hot water as compared with the first embodiment. Can be generated.
Specifically, after the inflow-side aqueous medium pipe 89 branches at the branch point c1, each of the branched pipes includes a connection part c2 of the plate heat exchanger 62c, a connection part c3 of the plate heat exchanger 62d, a plate It connects with the connection part c4 of the type | formula heat exchanger 62e. Further, the outlet-side aqueous medium pipe 90 connected to the connection part c5 of the plate heat exchanger 62c, the connection part c6 of the plate heat exchanger 62d, and the connection part c7 of the plate heat exchanger 62e is connected to the junction c8. And led out of the chiller unit 12.
Further, after the chiller side refrigerant pipe 14B connected to the motor operated valve 60 branches at the branch point d1, each of the branched pipes is connected to the connection part d2 of the plate heat exchanger 62c and the plate heat exchanger 62d. Connected to part d4. Further, the chiller side refrigerant pipe 14B connected to the connection part d5 of the plate heat exchanger 62c, the connection part d6 of the plate heat exchanger 62d, and the connection part d7 of the plate heat exchanger 62e joins at the branch point d8. And connected to the outdoor refrigerant pipe 14A.

11 is a perspective view of the chiller unit main body 77 as viewed from the side where the above-described electrical box 78 is disposed, and FIG. 12 is a perspective view of the chiller unit body 77 as viewed from the side where the electrical box 78 is not disposed. It is. Note that the chiller unit 12 according to the present embodiment is arranged side by side with the outdoor unit 11 on the anti-vibration mount 70 (see FIGS. 2 and 3), and the electrical box 78 is provided on the front side. As in the first embodiment, the operator can access the electrical box 74 of the outdoor unit 11 and the electrical box 78 of the chiller unit 12 simultaneously and easily.
As shown in FIGS. 11 and 12, all of the plate heat exchangers 62a, 62b, and 62c are also disposed in the upper chamber 86 in this embodiment. The plate heat exchangers 62a, 62b, and 62c are firmly fixed to the upper horizontal frames 85a and 85b via the support plate 98 while being mounted and fixed on the partition plate 99a. In the present embodiment, the flow switch 93 is not provided.

  Even in the present embodiment, the same effect as in the first embodiment can be obtained. Specifically, the branch point of the inflow-side aqueous medium pipe 89 is provided in the lower chamber 92, and each of the branched inflow-side aqueous medium pipes 89 has a substantially straight shape with a long distance, and has a plate shape. It connects with the connection part c2, c3, c4 of the upper part of the type | formula heat exchanger 62c, 62d, 62e. For this reason, the location where air accumulates in the path of the aqueous medium pipe 61 in a state in which it is possible to adjust so that the aqueous medium having the same flow rate flows into each of the plate heat exchangers 62c, 62d, and 62e is eliminated. Can do. Therefore, it is not necessary to perform the air venting operation to vent the air, so that the maintainability is improved. Further, since the three electric valves 60 are arranged below the electric box 78, the electric box 78, which is an existing device, serves as a roof, and condensation water is prevented from dripping onto the electric valve 60.

In addition, embodiment mentioned above shows the one aspect | mode of this invention to the last, and a deformation | transformation and application are arbitrarily possible within the scope of the present invention.
For example, in the above-described two embodiments, the present invention has been described by taking the chiller unit 12 including two or three plate heat exchangers as an example, but the number of plate heat exchangers is not limited thereto. Depending on the capacity of cold water or hot water to be generated, an appropriate number can be provided.
In the present embodiment, the case where the chiller unit main body 77 is separated into the upper chamber 86 and the lower chamber 92 by the partition plate 99a has been described as an example. However, the chiller unit main body 77 is not necessarily separated into the upper chamber 86 and the lower chamber 92. There is no need. In other words, the plate heat exchanger 62 only needs to be provided in the upper stage of the chiller unit main body 77.

It is a refrigerant circuit figure of a refrigerating device provided with the chiller unit concerning a 1st embodiment. It is the figure which looked at a mode that the chiller unit and the outdoor unit were arranged side by side from the front side. It is the figure which looked at a mode that the chiller unit and the outdoor unit were arranged side by side from the back side. It is the figure which looked at a mode that the chiller unit and the outdoor unit were arranged side by side from the upper part. It is the perspective view which looked at the chiller unit from the side by which the electrical equipment box was arrange | positioned. It is the perspective view which looked at the chiller unit from the side by which the electrical equipment box is not arrange | positioned. It is the figure which looked at the outflow side aqueous medium piping of the flow switch vicinity from the upper direction. It is VIII-VIII sectional drawing in FIG. It is the figure which looked at the flow switch of the state attached to the outflow side aqueous medium piping from the front. It is a refrigerant circuit figure of a freezing apparatus provided with the chiller unit which concerns on 2nd Embodiment. It is the perspective view which looked at the chiller unit from the side by which the electrical equipment box was arrange | positioned. It is the perspective view which looked at the chiller unit from the side by which the electrical equipment box is not arrange | positioned.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Refrigeration apparatus 10A Refrigeration cycle 11 Outdoor unit 12 Chiller unit 14B Chiller side refrigerant piping 60 Electric valve 61 Aqueous medium piping 62a, 62b, 62c, 62d, 62e Plate type heat exchanger 70 Anti-vibration stand 74 Electric equipment box 76 Outdoor unit main body 77 Chiller unit main body 78 Electrical box 88a Aqueous medium pipe through-hole 88b Aqueous medium pipe through-hole 89 Inflow side aqueous medium pipe 90 Outflow side aqueous medium pipe 96 Thermal insulation

Claims (3)

A chiller unit main body having a plate-type heat exchanger that is arranged side by side with an outdoor unit and generates cold / hot water by exchanging heat between a refrigerant supplied from the outdoor unit and an aqueous medium supplied from the outside. In the chiller unit
The refrigerant pipe and the aqueous medium pipe connected to the plate heat exchanger are led out to the back side of the chiller unit main body, and the refrigerant pipe of the chiller unit main body and the refrigerant pipe of the outdoor unit can be connected on the back side. A chiller unit is characterized in that an electrical box in which a heat insulating material is wound is disposed on the front side of the chiller unit main body, and an electric valve for controlling the flow rate of the refrigerant is disposed below the electrical box.   The chiller unit according to claim 1, wherein a width in the depth direction of the chiller unit main body is formed substantially the same as a width in the depth direction of the outdoor unit.   The chiller unit according to claim 1 or 2, wherein the chiller unit main body and the outdoor unit are arranged on a vibration isolation frame.

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