JP2016161203A - Heat source unit of refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten an installing time for a heat source unit of a refrigerator and at the same time restrict splashing refrigerant leaked when the heat source unit is worked at a site against a terminal block and also splashing of dew condensation water generated at a refrigerant pipe and a closing valve against the terminal block.SOLUTION: An outdoor unit 3 acting as a heat source unit of a refrigerator includes a closing valve 16 connected to refrigerant pipes 5a, 5b worked at a site, a unit casing 20, and a terminal block 60 to which an electric wire for supplying power supply is electrically connected. The closing valve 16 is arranged at a position higher than a height position of 40% of a height size H of a unit casing 20. The terminal block 60 is arranged at a higher position than that of the closing valve 16.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a heat source unit of a refrigeration apparatus, and more particularly to a heat source unit of a refrigeration apparatus including a heat exchange unit for performing heat exchange of room air.

  A conventional refrigeration apparatus includes an air conditioner in which an outdoor unit that is a heat source unit is connected to an indoor unit that is a utilization unit by a refrigerant pipe to form a refrigeration circuit. In such an air conditioner, after the installation work of the outdoor unit and the indoor unit and the piping work of the refrigerant pipe are performed at the installation site, the vacuuming work and the refrigerant filling work are performed. In order to facilitate these operations, the outdoor unit includes a closing valve that opens and closes a refrigerant pipe that connects the outdoor unit and the indoor unit.

  By the way, the place where the outdoor unit is installed is not limited to the ground, but may be a balcony provided on, for example, two or more floors. Because the regulations on buildings vary from country to country, there are not only large balconies but also very narrow balconies. For example, when installing an outdoor unit on a very narrow balcony, there may be a situation where an operator who installs the outdoor unit works out of the balcony.

  As described above, since the installation locations of the outdoor unit are various, if the closing valve is located at the lower part of the outdoor unit, it takes time to install, for example, Patent Document 1 (Japanese Patent Laid-Open No. 10-292934). Some air conditioners disclosed in Japanese Laid-Open Patent Publication (Kokai) have a structure in which a shut-off valve is arranged at the top of the outdoor unit.

  However, in the air conditioner described in Patent Document 1, since the closing valve is arranged at the uppermost part, the refrigerant leaking from the connection between the closing valve and the refrigerant pipe at the time of on-site construction, or during the operation of the air conditioner There is a high risk that the dew condensation water generated by the refrigerant pipe and the shutoff valve is applied to the terminal block of the outdoor unit.

  An object of the present invention is to reduce the installation time of the heat source unit of the refrigeration apparatus, and at the same time, the refrigerant leaking during the on-site construction of the heat source unit is applied to the terminal block, or the condensed water generated in the refrigerant pipe and the closing valve is applied to the terminal block. It is to suppress it.

  A heat source unit of a refrigeration apparatus according to a first aspect of the present invention is a heat source unit of a refrigeration apparatus connected to a utilization unit by a refrigerant pipe installed on site, and includes a closing valve connected to the refrigerant pipe, and a closing valve A unit casing that is fixed, and a terminal block that is fixed to the unit casing and to which an electric wire for supplying power is electrically connected. The closing valve is located at a height position of 40% of the height dimension of the unit casing. The terminal block is arranged at a position higher than the closing valve.

  In the heat source unit of the refrigeration apparatus according to the first aspect, since the closing valve is disposed at a position higher than the height position of 40% of the height dimension of the unit casing, the installation time of the heat source unit of the refrigeration apparatus is shortened. it can. Moreover, since the terminal block is arrange | positioned in the position higher than a closing valve, it can suppress that a refrigerant | coolant and condensed water splash on a terminal block from refrigerant | coolant piping or a closing valve.

  The heat source unit of the refrigeration apparatus according to the second aspect of the present invention is the heat source unit of the refrigeration apparatus according to the first aspect, wherein the closing valve is disposed at a height position of 50% or more and 90% or less of the height dimension of the unit casing. It is a thing.

  In the heat source unit of the refrigeration apparatus according to the second aspect, since the closing valve is disposed at half the height of the unit casing or above it, it is closed more than when it is below half the height of the unit casing. It is easy to install and remove the refrigerant piping from the valve.

  The heat source unit of the refrigeration apparatus according to the third aspect of the present invention is the heat source unit of the refrigeration apparatus of the first aspect or the second aspect, wherein the terminal block is at a position higher than the closing valve and the height of the unit casing. It is arranged at a height position of 70% or more and less than 100% of the dimension.

  In the heat source unit of the refrigeration apparatus according to the third aspect, since the terminal block is disposed at a height position of 70% or more and less than 100% of the height dimension of the unit casing, it is easy to connect the electric wire to the terminal block. .

  The heat source unit of the refrigeration apparatus according to the fourth aspect of the present invention is the heat source unit of the refrigeration apparatus according to any one of the first to third aspects, wherein the unit casing is a part of the closed valve arrangement space in which the closing valve is arranged. A closing valve cover that can be attached to and detached from the unit casing so as to cover the portion, and an opening that connects the closing valve arrangement space and the external space outside the unit casing is formed with the closing valve cover attached. .

  In the heat source unit of the refrigeration apparatus according to the fourth aspect, since the opening connecting the closing valve arrangement space and the external space outside the unit casing is formed with the closing valve cover attached, the closing valve cover In addition to protection, the refrigerant leaking through the opening can be discharged to the outside.

  The heat source unit of the refrigeration apparatus according to the fifth aspect of the present invention is the heat source unit of the refrigeration apparatus of the fourth aspect, wherein the unit casing covers a part of the terminal block arrangement space where the terminal block is arranged with the closing valve cover. The terminal block arrangement space is substantially isolated from the closing valve arrangement space and the external space with the closing valve cover mounted.

  In the heat source unit of the refrigeration apparatus according to the fifth aspect, since the terminal block arrangement space is substantially isolated from the closing valve arrangement space and the external space with the closing valve cover attached, refrigerant and It is possible to prevent the condensed water from splashing on the terminal block.

  A heat source unit of a refrigeration apparatus according to a sixth aspect of the present invention is the heat source unit of the refrigeration apparatus according to any one of the first to third aspects, wherein the unit casing is a part of a closed valve arrangement space in which a closing valve is arranged. A closing valve cover detachably attached to the unit casing so as to cover the portion, and a closing valve arrangement space and another space substantially isolated from the outer space outside the unit casing with the closing valve cover mounted It has a partition plate that can be attached to and detached from the unit casing, and the closing valve cover and the partition plate are separate bodies.

  In the heat source unit of the refrigeration apparatus according to the sixth aspect, in the unit casing that forms the closing valve arrangement space and another space that is substantially isolated from the outer space outside the unit casing with the closing valve cover attached. Since it has a detachable partition plate, it forms another space enclosed by the partition plate and the closing valve cover, and the coolant leaks in the closing valve arrangement space and the equipment existing in the other space from the water by the partition plate Can be protected.

  The heat source unit of the refrigeration apparatus according to the seventh aspect of the present invention is the heat source unit of the refrigeration apparatus according to the sixth aspect, wherein the terminal block is fixed to the unit casing so as to be housed in another space.

  In the heat source unit of the refrigeration apparatus according to the seventh aspect, since the terminal block is fixed to the unit casing so as to be housed in another space, the partition plate serves as a barrier for the refrigerant and condensed water, and the refrigerant pipe and the closing valve It is possible to prevent the refrigerant and condensed water from being applied to the terminal block. In addition, the electric wires can be easily attached to or removed from the terminal block with the partition plate removed.

  The heat source unit of the refrigeration apparatus according to the eighth aspect of the present invention is the heat source unit of the refrigeration apparatus according to the sixth aspect or the seventh aspect, in which the partition plate has a notch serving as a passage for the electric wire.

  In the heat source unit of the refrigeration apparatus according to the eighth aspect, since the partition plate has a cutout portion that becomes a passage for the electric wire, the electric wire is fixed to the terminal block with the partition plate removed, and then the fixed electric wire is cut. It will be possible to pass through the notch.

  In the heat source unit of the refrigeration apparatus according to the first aspect of the present invention, the installation time can be shortened, and at the same time, leakage refrigerant and dew condensation water generated in the refrigerant pipe and the shutoff valve can be prevented from being applied to the terminal block.

  In the heat source unit of the refrigeration apparatus according to the second aspect of the present invention, the refrigerant pipe can be easily attached to and detached from the shut-off valve, and on-site construction can be easily performed.

  In the heat source unit of the refrigeration apparatus according to the third aspect of the present invention, it becomes easy to attach the electric wire to the terminal block, and the field construction can be easily performed.

  In the heat source unit of the refrigeration apparatus according to the fourth aspect of the present invention, it is possible to prevent problems caused by the leaked refrigerant remaining in the closed valve arrangement space or the unit casing.

  In the heat source unit of the refrigeration apparatus according to the fifth aspect of the present invention, it is possible to prevent problems caused by the refrigerant and condensed water being applied to the terminal block.

  In the heat source unit of the refrigeration apparatus according to the sixth aspect of the present invention, the protection of the equipment arranged in the other space partitioned by the partition plate is improved.

  In the heat source unit of the refrigeration apparatus according to the seventh aspect of the present invention, on-site construction and maintenance can be easily performed.

  In the heat source unit of the refrigeration apparatus according to the eighth aspect of the present invention, wiring becomes easy.

The circuit diagram for demonstrating the outline | summary of an air-conditioning indoor unit. The perspective view which shows the external appearance of the outdoor unit to which connecting piping is attached at the time of field construction. The rear view of an outdoor unit. The perspective view of a service lid. The perspective view of a service lid. The partial expansion perspective view which shows a part of outdoor unit in assembly, a partition plate, and a service lid. The partial expansion perspective view which shows a part of outdoor unit and assembly plate during an assembly. The right view of the outdoor unit which removed the front plate, the top plate, and the right side plate of the unit casing. The partial expanded side view which shows a part of outdoor unit around a terminal block. The elements on larger scale for demonstrating a terminal block.

(1) Configuration of Air Conditioner An air conditioner outdoor unit will be described as an example of a heat source unit of a refrigeration apparatus according to an embodiment of the present invention. FIG. 1 shows an outline of a circuit configuration of an air conditioner according to an embodiment of the present invention. The air conditioner 1 includes a refrigerant circuit 2 and performs a vapor compression refrigeration cycle by circulating the refrigerant in the refrigerant circuit 2. For example, as shown in FIG. 1, the refrigerant circuit 2 has a configuration in which one outdoor unit 3 as a heat source unit and one indoor unit 4 as a utilization unit are connected by refrigerant pipes 5a and 5b. Have In addition, the two lines of the both ends of the refrigerant | coolant piping 5a, 5b shown by FIG. 1 represent the connection part 5aa, 5ab, 5ba, 5bb of refrigerant | coolant piping 5a, 5b.

  More specifically, the refrigerant circuit 2 includes a compressor 11, a four-way switching valve 12, an outdoor heat exchanger 13, an expansion mechanism 14, an accumulator 15, a closing valve 16, and an indoor heat exchanger 17. It has. The closing valve 16 includes a liquid side closing valve 16a and a gas side closing valve 16b. In the indoor unit 4, an indoor heat exchanger 17 connected to the refrigerant pipes 5a and 5b is arranged. The outdoor unit 3 includes a compressor 11, a four-way switching valve 12, an outdoor heat exchanger 13, an expansion mechanism 14, an accumulator 15, a liquid side closing valve 16a, and a gas side closing valve 16b. Has been placed.

  The four-way switching valve 12 is connected to the first port connected to the discharge side of the compressor 11, the second port connected to the outdoor heat exchanger 13, and the suction side of the compressor 11 via the accumulator 15. And a fourth port connected to the indoor heat exchanger 17 via the gas side shutoff valve 16b and the refrigerant pipe 5b. Moreover, one end of the expansion mechanism 14 is connected to the outdoor heat exchanger 13, and the other end of the expansion mechanism 14 is connected to the indoor heat exchanger 17 via the liquid side shut-off valve 16a and the refrigerant pipe 5a.

  The outdoor unit 3 is provided with an outdoor unit electrical component mounting portion 18, and the indoor unit 4 is provided with an indoor unit electrical component mounting portion 19. And the outdoor unit 3 and the indoor unit 4 are electrically connected by the electric wire 5c. For example, when there is a power supply outside the room, as shown by a solid line, a power plug (not shown) of the outdoor unit 3 is inserted into a power socket (not shown) provided outside the room, The electrical equipment mounting unit 18 is connected to a commercial power source 9. Further, for example, when there is a power supply in the room, a power plug (not shown) of the indoor unit 4 is inserted into a power socket (not shown) provided in the room as indicated by a broken line. The indoor unit electrical component mounting unit 19 is connected to a commercial power source 9. The refrigerant pipes 5a and 5b and the electric wire 5c are combined into one connecting pipe 5. Here, only the power supply system connecting the outdoor unit electrical component mounting unit 18 and the indoor unit electrical component mounting unit 19 for supplying power is described, but the outdoor unit electrical component mounting unit 18 and the indoor unit electrical component are described. A signal system for connecting the mounting unit 19 to transmit information may be provided between the outdoor unit electrical component mounting unit 18 and the indoor unit electrical component mounting unit 19, and a signal line for the signal system is connected to the connection pipe 5. It may be included.

  During the cooling operation, the four-way switching valve 12 is switched to the connection indicated by the solid line in FIG. Due to the circuit connection during the cooling operation, the refrigerant discharged from the compressor 11 flows from the first port of the four-way switching valve 12 to the second port, the outdoor heat exchanger 13, the expansion mechanism 14, and the liquid side closing valve 16a. Then, the indoor heat exchanger 17, the gas side closing valve 16b, the fourth port of the four-way switching valve 12, the third port, and the accumulator 15 are circulated in this order, and return to the suction side of the compressor 11.

  During the heating operation, the four-way switching valve 12 is switched to the connection indicated by the broken line in FIG. By such circuit connection during heating operation, the refrigerant discharged from the compressor 11 flows from the first port of the four-way switching valve 12 to the fourth port, the gas side shutoff valve 16b, the indoor heat exchanger 17, the liquid side shutoff. The valve 16 a, the expansion mechanism 14, the outdoor heat exchanger 13, the second port to the third port of the four-way switching valve 12, and the accumulator 15 circulate in this order, and return to the suction side of the compressor 11.

(2) Configuration of Outdoor Unit 3 (2-1) Unit Casing FIG. 2 is a perspective view showing an external appearance of the outdoor unit 3 to which the connecting pipe 5 is attached at the time of site construction. FIG. 3 is a rear view of the outdoor unit 3.

  The outdoor unit 3 includes a unit casing 20. The unit casing 20 includes a front plate 21 that forms the front surface of the unit casing 20, a top plate 22 that forms the top surface, a right side plate 23 that forms the right side surface, a left side plate 24 that forms the left side surface, and a bottom surface. A bottom plate 25 to be formed and a protective wire mesh 26 for covering the suction port 27 on the back surface of the unit casing 20 for protection are provided. The outside air sucked from the suction port 27 of the unit casing 20 passes through the outdoor heat exchanger 13 housed inside the unit casing 20 and is blown out from the front outlet 28.

  Further, the unit casing 20 includes a service lid 30 attached to the right side plate 23. FIG. 4 is a perspective view showing the appearance of the service lid 30 as viewed from diagonally upward and rear right, and FIG. 5 is a perspective view of the appearance of the service lid 30 as viewed from diagonally upward and forward right. The service lid 30 includes a right side surface portion 31 and a back surface portion 32. The back surface portion 32 is shorter than the vertical length of the right side surface portion 31. Since the upper side of the right side surface portion 31 and the rear surface portion 32 coincide with each other, the service lid 30 is shaped such that the lower portion of the rear surface portion 32 is cut off. As shown in FIG. 3, the service lid 30 has such a shape. When the service lid 30 is attached to the right side plate 23, an opening 29 on the back side is formed. It is for making it a structure.

  On the upper side of the service lid 30, a rib 33 to be inserted inside the top plate 22 is formed. In order to fix the service lid 30, three screw holes 34 are formed in the rib 33 of the service lid 30, and three portions are also formed in the other portions. The service lid 30 is fixed with the six screws shown in FIG. A concave portion 35 for inserting a finger into a portion slightly lower than the center of the right side surface portion 31 of the service lid 30 is formed.

(2-2) Configuration of the closing valve 16 and its surroundings The service lid 30 described above is also a closing valve cover. A configuration around the closing valve 16 protected by the service lid 30 will be described with reference to FIGS. 6, 7, and 8. FIG. 6 is a partially enlarged perspective view showing a state where the service lid and the partition plate are attached. FIG. 7 is a partially enlarged perspective view showing a state where the partition plate is attached. FIG. 8 is a side view of the outdoor unit 3 with the front plate 21, top plate 22, and right side plate 23 removed from the unit casing 20 as viewed from the right side.

  The liquid side closing valve 16a is positioned above the gas side closing valve 16b, and the liquid side closing valve 16a and the gas side closing valve 16b are arranged in a straight line in the vertical direction. The liquid side closing valve 16a is provided with a liquid side pipe connection port 16aa connected to the refrigerant pipe 5a through which the liquid refrigerant flows. The gas side shutoff valve 16b is also provided with a gas side pipe connection port 16ba connected to the refrigerant pipe 5b through which the gas refrigerant flows. Therefore, the communication pipe 5 including these refrigerant pipes 5 a and 5 b is connected from the back side of the outdoor unit 3.

  The inner wall 70 of the unit casing 20 is separated from the machine room 3a in which the compressor 11, the four-way switching valve 12, the expansion mechanism 14 and the accumulator 15 shown in FIG. Is provided. The inner wall 70 is formed by combining a plurality of sheet metals. A partition plate 40 is attached on the liquid side closing valve 16a. The service lid 30 is attached after the partition plate 40 is attached. The top plate 22, the service lid 30, the partition plate 40, and the inner wall 70 surround the five directions of the front side, the upper side, the lower side, and the left-right direction among the circumferences of the liquid side shutoff valve 16a and the gas side shutoff valve 16b. Yes. A space surrounded by the top plate 22, the service lid 30, the partition plate 40, and the inner wall 70 is a closing valve arrangement space SS. The back side of the closing valve arrangement space SS is an opening 29.

(2-3) Partition plate 40
The partition plate 40 extends from the front to the rear of the closing valve arrangement space SS, and divides the space surrounded by the top plate 22, the service lid 30, and the inner wall 70 into two. One of the divided spaces is the closing valve arrangement space SS, and the other space is the terminal block arrangement space TS. The terminal block 60 is arranged in the terminal block arrangement space TS. The partition plate 40 is bent so that the front is low and the rear is high in a side view. In this way, as the rear becomes higher, the space around the liquid side pipe connection port 16aa of the liquid side shutoff valve 16a and the gas side pipe connection port 16ba of the gas side shutoff valve 16b is larger than the front space. It is getting wider.

  The partition plate 40 is fixed by two screws 46. Two screw holes 41 through which the screws 46 respectively pass are provided. Further, the inner wall 70 is formed with a female screw portion 71 into which the screws 46 are screwed.

  Further, in order to fix the partition plate 40, an opening 42 is formed at the front end portion of the partition plate 40, and a protruding portion 43 is formed at the front left side portion. A tab 72 shown in FIG. 7 is formed on the inner wall 70 so as to protrude rearward. The tab 72 of the inner wall 70 is fitted into the opening 42 of the partition plate 40, and the front end portion of the partition plate 40 is supported from below by the tab 72. Further, the notch 73 shown in FIG. 7 is formed in the inner wall 70 so as to extend vertically while being opened downward. The protrusion 43 of the partition plate 40 is fitted into the notch 73 of the inner wall 70 from below. By fitting the protruding portion 43 into the notch 73, the front portion of the partition plate 40 is fixed so as not to move upward and to move in the left-right direction.

  The partition plate 40 has a notch 44 formed on the left side thereof. The notch 44 is for making a gap through which the wire harnesses 51 and 52 including the electric wire 5 c pass between the notch 44 and the inner wall 70. A sponge-like seal member 45 is attached around the partition plate 40. By this seal member 45, the separation of the closing valve arrangement space SS and the terminal block arrangement space TS becomes more reliable.

(2-4) Terminal block 60
The terminal block 60 is fixed to the inner wall 70 at a position above the closing valve 16. The terminal block 60 is fixed in the terminal block arrangement space TS above the partition plate 40. FIG. 9 shows the configuration around the terminal block 60 in an enlarged manner, and FIG. 10 shows the terminal block 60 in an enlarged manner. A wire harness 51 for connecting to the power source 9 and a wire harness 52 for connecting to the indoor unit 4 are connected to the terminal block 60. The four electric wires 5c included in the wire harness 52 are fixed by four screws 61 and are electrically connected to the four power terminals 62 included in the terminal block 60, respectively. Similarly, the three electric wires 51a included in the wire harness 51 are fixed by three screws 63 and are electrically connected to the three power terminals 64 included in the terminal block 60, respectively.

  The terminal block 60 is fixed to the inner wall 70 with screws 65. An earth line 66 extending from the terminal block 60 is electrically connected to the inner wall 70 by a screw 74. Further, the three power supply lines 67 extending from the terminal block 60 are connected to the outdoor unit electrical component mounting portion 18 shown in FIG. The outdoor unit electrical component mounting portion 18 is disposed inside the unit casing 20 on the opposite side of the terminal block 60 with the inner wall 70 interposed therebetween.

  The wire harnesses 51 and 52 extend straight downward from the terminal block 60. These wire harnesses 51 and 52 are fixed to the inner wall 70 by a wire harness holder 80. The wire harness holder 80 is disposed below the partition plate 40. The wire harness holder 80 is fixed to the inner wall 70 with three screws 81. When the wire harnesses 51 and 52 are attached to the terminal block 60 at the time of on-site construction, the screws 81 are removed and the wire harnesses 51 and 52 are attached to the wire harness holder 80.

(3) Arrangement Position of Closing Valve 16 and Terminal Block 60 The height dimension H shown in FIG. 8 is the height dimension of the unit casing 20. The height dimension T1 shown in FIG. 8 is the height position of the upper end of the terminal block 60, and the height dimension T2 is the height position of the lower end of the terminal block 60. Further, the height dimension S1 is the height position of the upper end of the closing valve 16, and the height dimension S2 is the height position of the lower end of the closing valve 16.

  The closing valve 16 is disposed at a position higher than the height position of 40% of the height dimension H of the unit casing 20. Considering the space for arranging the terminal block 60, the arrangement position of the closing valve 16 is preferably set within a range of 50% or more and 90% or less of the height dimension H of the unit casing 20. The closing valve 16 shown in FIG. 8 is arranged at a height position of about 60% (height dimension S2) to about 70% (height dimension S1) of the height dimension H.

  The terminal block 60 is disposed at a position higher than the closing valve 16. Considering the space for disposing the shut-off valve 16, the disposition position of the terminal block 60 is preferably set within a range of 70% or more and less than 100% of the height dimension H of the unit casing 20. The terminal block 60 shown in FIG. 8 is arranged at a height position of about 85% of the height dimension H (height dimension T2) to about 95% (height dimension T1).

  Further, in order to prevent the refrigerant from getting on the terminal block 60 even if the refrigerant blows out from the liquid side piping connection port 16aa and the gas side piping connection port 16ba at the time of construction on site, the terminal block is directly above the closing valve 16. It is preferable that the closing valve 16 is shifted backward and the terminal block 60 is shifted forward so that 60 is not disposed.

(4) Features (4-1)
As described above, the outdoor unit 3 (an example of the heat source unit of the refrigeration apparatus) of the air conditioner 1 according to the present embodiment is connected to the indoor unit 4 that is a utilization unit by the refrigerant pipes 5a and 5b. In the outdoor unit 3, the closing valve 16 is disposed at a position higher than 40% of the height dimension H of the unit casing 20. Moreover, the terminal block 60 is arrange | positioned in the position higher than a closing valve. As a result, the refrigerant pipes 5a and 5b can be easily connected to the closing valve 16 and the installation time can be shortened, and since the terminal block 60 is located higher than the closing valve, the refrigerant and condensed water can be connected to the refrigerant pipes 5a and 5b and It is possible to suppress the stop valve 16 from being applied to the terminal block 60.

(4-2)
The closing valve 16 shown in FIG. 8 is arranged at a height position of about 60% to about 70% of the height dimension H of the unit casing 20. In this way, the closing valve 16 is disposed at a height position of 50% or more and 90% or less of the height dimension H, and is disposed at half the height of the unit casing 20 or above the unit casing 20. The refrigerant pipes 5a and 5b can be easily attached to and detached from the closing valve 16 as compared with the case where the height is lower than half of the height of the valve, and the field construction can be easily performed.

(4-3)
The terminal block 60 shown in FIG. 8 is disposed at a height of about 85% to about 95% of the height dimension H of the unit casing 20. As described above, since the terminal block 60 is disposed at a height position of 70% or more and less than 100% of the height dimension H, it is easy to attach the electric wire 5c of the wire harness 52 to the terminal block 60. Construction can be performed easily.

(4-4)
In a state in which the service lid 30 that is a closing valve cover is mounted, an opening 29 that connects the closing valve arrangement space SS and the external space OS outside the unit casing 20 is formed. As a result, the closing valve 16 can be protected by the service lid 30 and the refrigerant leaking through the opening 29 can be discharged to the outside. As a result, it is possible to prevent problems caused by the leaked refrigerant remaining in the closing valve arrangement space SS and the unit casing 20. Here, since the member that can be attached to and detached from the unit casing is used as the closing valve cover so as to cover a part of the closing valve arrangement space SS, the service lid 30 that simultaneously covers the other terminal block arrangement space TS is also the closing valve cover. . Therefore, the closing valve cover is a member that can be attached to and detached from the unit casing so as to cover a part of the closing valve arrangement space SS, and may not cover other spaces such as the terminal block arrangement space TS at the same time. .

(4-5)
Since the terminal lid placement space TS is substantially isolated from the shut-off valve placement space SS and the external space OS by the service lid 30, the partition plate 40, and the inner wall 70 in a state in which the service lid 30 that is a closing valve cover is mounted, It is possible to prevent the refrigerant and condensed water from being applied to the terminal block 60 from the refrigerant pipes 5a and 5b and the closing valve 16. Moreover, since the opening 29 for the closing valve 16 is also arranged below the terminal block arrangement space TS, intrusion of rainwater or the like can be prevented. If the sealing member 45 is attached to the boundary of the service lid 30, the partition plate 40, and the inner wall 70 as in the above embodiment, the terminal block arrangement space TS is isolated from the closing valve arrangement space SS and the external space OS. Since it can be performed sufficiently, the above-mentioned effect is improved.

(4-6)
Others that are substantially isolated from the closing valve arrangement space SS and the external space OS outside the unit casing 20 by a partition plate 40 that can be attached to and detached from the unit casing 20 with the service lid 30 that is a closing valve cover attached. A terminal block arrangement space TS which is a space of Here, the terminal block arrangement space TS is described as an example of another space, but the other space is not limited to the terminal block arrangement space TS, and may be a space used for other purposes. In this way, by forming the terminal block arrangement space TS surrounded by the partition plate 40, the service lid 30 and the inner wall 70, the terminal block arrangement space TS exists from the refrigerant leakage and water generated in the closing valve arrangement space SS. The terminal block 60 which is an equipment can be protected by the partition plate 40.

(4-7)
Since the partition plate 40 has the cutout portion 44 that becomes the passage of the wire harness 52 including the electric wire 5c, the fixed electric wire 5c is cut out after the electric wire 5c is fixed to the terminal block 60 in a state where the partition plate 40 is removed. Thus, wiring to the terminal block 60 is facilitated. Further, by removing the partition plate 40, the work of removing or attaching the wire harness holder 80 is facilitated, and the work of attaching and removing the wire harnesses 51 and 52 to the wire harness holder 80 is facilitated.

(5) Modification (5-1) Modification 1A
In the embodiment described above, the case where the power source 9 is provided outside has been mainly described. However, the communication pipe 5 is also used when the power source 9 is in the room and power is supplied to the outdoor unit 3 via the indoor unit 4. Thus, the refrigerant pipes 5a, 5b and the electric wire 5c are communicated between the outdoor unit 3 and the indoor unit 4, and the present invention can be applied in the same manner as in the above embodiment.

(5-2) Modification 1B
In the above embodiment, the case where the closing valve 16 includes a pair of the liquid side closing valve 16a and the gas side closing valve 16b, and one indoor unit 4 is connected to one outdoor unit 3 has been described. However, the present invention can also be applied to the case where the closing valve 16 includes a plurality of sets of liquid-side closing valves and gas-side closing valves, and a plurality of indoor units are connected to one outdoor unit.

(5-3) Modification 1C
In the above embodiment, the outdoor unit 3 of the air conditioner 1 is described as an example of the heat source unit of the refrigeration apparatus, and the indoor unit 4 is described as an example of the utilization unit. However, the heat source unit of the refrigeration apparatus is limited to this. However, the present invention can be applied to a refrigeration apparatus in which a heat source unit and a utilization unit are connected by a refrigerant pipe and an electric wire. For example, a hot water supply apparatus using a heat pump device as a heat source unit is included in the heat source unit of the refrigeration apparatus of the present invention.

1 Air conditioner (example of refrigeration equipment)
2 Refrigeration circuit 3 Outdoor unit (example of heat source unit)
4 Indoor units (examples of units used)
DESCRIPTION OF SYMBOLS 5 Connection piping 5a, 5b Refrigerant piping 5c Electric wire 9 Power supply 16 Closing valve 16a Liquid side closing valve 16b Gas side closing valve 20 Unit casing 30 Service cover (example of closing valve cover)
40 Partition plate 44 Notch

Japanese Patent Laid-Open No. 10-292934

Claims (8)

The heat source unit (3) of the refrigeration apparatus (1) connected to the utilization unit (4) by the refrigerant pipes (5a, 5b) to be constructed on-site,
A shut-off valve (16) connected to the refrigerant pipe;
A unit casing (20) to which the shut-off valve is fixed;
A terminal block (60) fixed to the unit casing and electrically connected to an electric wire for power supply;
The closing valve is disposed at a position higher than a height position of 40% of a height dimension of the unit casing;
The said terminal block is a heat-source unit of the freezing apparatus arrange | positioned in the position higher than the said closing valve. The closing valve is disposed at a height position of 50% or more and 90% or less of the height dimension of the unit casing.
The heat source unit of the refrigeration apparatus according to claim 1. The terminal block is disposed at a position higher than the closing valve and at a height position of 70% or more and less than 100% of the height dimension of the unit casing.
The heat source unit of the refrigeration apparatus according to claim 1 or 2. The unit casing has a closing valve cover (30) that can be attached to and detached from the unit casing so as to cover a part of the closing valve arrangement space in which the closing valve is arranged, and in a state in which the closing valve cover is mounted. An opening is formed to connect the closing valve arrangement space and the external space outside the unit casing.
The heat source unit of the refrigeration apparatus according to any one of claims 1 to 3. The unit casing is configured such that the closing valve cover covers a part of the terminal block arrangement space in which the terminal block is arranged, and the terminal block arrangement space is installed in the state where the closing valve cover is attached. Substantially isolated from the placement space and the external space;
The heat source unit of the refrigeration apparatus according to claim 4. The unit casing includes a closing valve cover that can be attached to and detached from the unit casing so as to cover a part of the closing valve arrangement space in which the closing valve is arranged, and the closing valve arrangement space in a state in which the closing valve cover is mounted. And a partition plate (40) that can be attached to and detached from the unit casing to form another space that is substantially isolated from the external space outside the unit casing, and the closing valve cover and the partition plate are Separate body,
The heat source unit of the refrigeration apparatus according to any one of claims 1 to 3. The terminal block is fixed to the unit casing so as to be stored in the other space.
The heat source unit of the refrigeration apparatus according to claim 6. The partition plate has a notch (44) that becomes a passage of the electric wire,
The heat source unit of the refrigeration apparatus according to claim 6 or 7.

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