WO2018167963A1 - Heat pump device - Google Patents
Heat pump device Download PDFInfo
- Publication number
- WO2018167963A1 WO2018167963A1 PCT/JP2017/011014 JP2017011014W WO2018167963A1 WO 2018167963 A1 WO2018167963 A1 WO 2018167963A1 JP 2017011014 W JP2017011014 W JP 2017011014W WO 2018167963 A1 WO2018167963 A1 WO 2018167963A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrical component
- component box
- heat pump
- fall prevention
- prevention plate
- Prior art date
Links
- 230000002265 prevention Effects 0.000 claims abstract description 57
- 238000005452 bending Methods 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 37
- 239000003507 refrigerant Substances 0.000 description 25
- 210000000078 claw Anatomy 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 4
- 241001247986 Calotropis procera Species 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000009957 hemming Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 241001290864 Schoenoplectus Species 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
Definitions
- This invention relates to a heat pump apparatus having a main body with an electrical box inside.
- An electrical component box is installed in the main body of the indoor unit or outdoor unit constituting the heat pump device.
- the electrical component box includes a circuit board on which a plurality of electrical components are mounted, and the other end of the wiring whose one end is connected to the terminal connection portion on the circuit board is used for taking out the wiring provided in the electrical component box. It is taken out to the outside through the opening.
- the conventional heat pump device prevents the electrical component from melting and falling in the electrical component box when the electrical component is ignited due to a malfunction, and further falling from the opening of the electrical component box into the main body. It has a structure (see Patent Document 1).
- the circuit board is installed facing the bottom surface of the electrical component box, and the opening for taking out the wiring is formed on the bottom surface of the electrical component box facing the terminal connection portion on the circuit substrate. Yes.
- the area on the circuit board that faces the opening for extracting the wiring no electrical component that can be melted by heat is mounted, and the periphery of the opening is formed around the opening for extracting the wiring.
- the wiring is taken out from the electrical component box from the bottom of the electrical component box after the wiring is routed.
- Patent Document 1 although it is possible to take out the wiring from the bottom surface of the electrical component box, there is a possibility of melting and dropping in the region on the circuit board facing the opening provided on the bottom surface of the electrical component box. There was a restriction that some electrical parts could not be installed, and the structure was inconvenient.
- the present invention has been made to solve the above-described problems, and enables an electric wire disposed above an opening for taking out the wiring while allowing the wiring to be taken out from the bottom of the electric component box. It is an object of the present invention to provide a heat pump device capable of preventing parts from being melted and dropped onto a main body.
- a heat pump device includes a main body and a box-shaped electric box that is disposed in the main body and accommodates electrical components therein, and has a front opening.
- the main body has an opening on the front of the electric box.
- the front end surface of the bottom surface of the electrical component box is located behind the front end surface of the other side surface of the electrical component box, and between the front end surface of the bottom surface of the electrical component box and the front panel,
- An opening serving as a passage for taking out the wiring connected to the electrical component is formed outside the electrical component box, and a receiving surface is provided below the electrical component box to cover the opening at a position away from the electrical component box.
- a fall prevention plate is arranged.
- the opening serving as a passage for taking out the wiring from the electrical component box is formed between the front end surface of the bottom surface of the electrical component box and the front panel of the main body. Wiring can be taken out from the bottom of the box.
- the fall prevention plate with the receiving surface which covers an opening part in the position away from an electrical component box is arrange
- FIG. 5 is a bottom view of FIG. 5.
- FIG. 9 is a schematic ZZ sectional view of FIG. 8.
- FIG. 10 is an enlarged view of a portion surrounded by a dotted line in FIG. 9.
- FIG. 10 is a perspective view of the fall prevention board in the indoor unit of the refrigerating cycle device concerning Embodiment 1 of this invention.
- FIG.12 (b) shows the fall prevention board in the indoor unit of the refrigerating-cycle apparatus which concerns on Embodiment 1 of this invention.
- FIG. 1 is a diagram showing a typical configuration of a heat pump apparatus according to Embodiment 1 of the present invention.
- the heat pump device includes a heat pump indoor unit (hereinafter simply referred to as an indoor unit) 100, an outdoor unit 200, and a customer selection component 300 including a tank 17.
- an indoor unit hereinafter simply referred to as an indoor unit
- an outdoor unit 200 an outdoor unit
- a customer selection component 300 including a tank 17.
- the indoor unit 100 includes a heat exchanger 1, a pump 2, a flow sensor 3, a strainer 4, a valve 5, a valve 6, an air relief valve 7, a pressure relief valve 8, and a pressure gauge 9.
- the outdoor unit 200 includes a compressor 15, a heat exchanger 14, a decompression device 16, and the like.
- the compressor 15, the heat exchanger 1, the pressure reducing device 16, and the heat exchanger 14 are sequentially connected by a pipe to configure a refrigerant circuit A in which a primary refrigerant such as R410A circulates.
- the heat exchanger 1, the pump 2, the valve 6, the flow rate sensor 3, the tank 17, the valve 5, and the strainer 4 are sequentially connected by piping to constitute the water circuit B.
- a secondary refrigerant such as water that is heated by exchanging heat with the primary refrigerant circulating in the refrigerant circuit A flows.
- the high-temperature and high-pressure primary refrigerant discharged from the compressor 15 flows into the heat exchanger 1, exchanges heat with the secondary refrigerant in the water circuit B, dissipates heat, and condensates. Thereafter, the refrigerant is decompressed by the decompression device 16 to become a low-pressure two-phase refrigerant and flows into the heat exchanger 14.
- the refrigerant that has flowed into the heat exchanger 14 exchanges heat with the air passing through the heat exchanger 14 to absorb heat and gasify.
- the gasified refrigerant is sucked into the compressor 15 again.
- water as the secondary refrigerant exchanges heat with the primary refrigerant in the refrigerant circuit A that passes through the heat exchanger 1 to receive the heat of the primary refrigerant and become hot water.
- Hot water obtained in the heat exchanger 1 is sent to the customer selection part 300 by the pump 2 and stored in the tank 17.
- thermocouple (not shown) installed in the tank 17 or the flow sensor 3, the control circuit 101 Controls parts.
- the indoor unit 100 includes an air relief valve 7, a valve 6, a pressure relief valve 8, a pressure gauge 9, and a flow rate sensor 3 in the middle of a path through which hot water is sent from the pump 2 to the customer selection component 300.
- the flow sensor 3 measures the amount of water in the water circuit B.
- the air relief valve 7 discharges air in the pipe.
- the pressure relief valve 8 adjusts the pressure so that the water pressure inside the water circuit B does not become excessive.
- the pressure gauge 9 measures the water pressure in the water circuit B.
- a strainer 4 and a valve 5 are provided on the pipe on the opposite side of the heat exchanger 1 that feeds water to the heat exchanger 1.
- the strainer 4 filters solid impurities in the water circuit B.
- the valve 5 is used in combination with the valve 6 described above, and the water channel can be divided by closing both the valves 5 and 6.
- the heat exchanger 1 or the pump 2 can be easily replaced by closing both the valves 5 and 6 and dividing the water channel during maintenance.
- the indoor unit 100 configured as described above is connected to the outdoor unit 200 through the refrigerant input joint 10 and the refrigerant output joint 11.
- the indoor unit 100 is connected to the customer selection component 300 at the water-filling joint 12 and the water-out joint 13.
- the customer selection component 300 includes a three-way valve 18 and a pressure relief valve 19 in addition to the tank 17.
- the customer selection component 300 has a mechanism in which the hot water stored in the tank 17 as described above is adjusted by the three-way valve 18 and then discharged.
- the pressure relief valve 19 is opened when the internal pressure of the tank 17 reaches a predetermined pressure so that the internal pressure of the tank 17 does not become excessive.
- the customer selection part 300 shown in FIG. 1 has a basic configuration, and may actually further include the following configuration.
- a secondary heat exchanger for exchanging heat between water and hot water led to a temperature control device such as floor heating or a radiator, a heater for accelerating the generation of hot water, water immersed in water in the tank 17 and directly
- a temperature control device such as floor heating or a radiator
- a heater for accelerating the generation of hot water water immersed in water in the tank 17 and directly
- the customer selection component 300 such as those equipped with a submerged heater that warms up.
- the indoor unit 100 may include these customer selection parts 300.
- the connection order of components such as the valve 6, the air relief valve 7, and the pressure relief valve 8 is not limited to the order shown in FIG. 1 and may be different.
- FIG. 2 is an external perspective view of the indoor unit of the heat pump apparatus according to Embodiment 1 of the present invention.
- FIG. 3 is an exploded perspective view of the indoor unit of the heat pump apparatus according to Embodiment 1 of the present invention.
- FIG. 4 is an exploded perspective view of the water circuit of the indoor unit of the heat pump apparatus according to Embodiment 1 of the present invention. Note that “upper”, “lower”, “left”, “right”, “front”, and “rear” used in the following description mean directions when the indoor unit 100 is viewed from the front side unless otherwise specified. .
- the main body 20 of the indoor unit 100 has a rectangular parallelepiped shape including an upper panel 21, a right panel 22, a left panel 23, a rear panel 24, a bottom panel 25, and a front panel 26.
- a pressure gauge 9 and an operation panel 27 for setting the water temperature and the like are attached to the front panel 26, and the water pressure and the water temperature can be confirmed from outside and various operations can be performed via the operation panel 27.
- the bottom panel 25 is provided with a refrigerant joint 10, a refrigerant joint 11, a water joint 12, and a water joint 13, and external devices such as the outdoor unit 200 and the customer selection part 300 are connected thereto.
- a drain pan 25 a is installed on the upper portion of the bottom panel 25 so that water dripped from the water circuit B can be drained to the outside of the main body 20.
- the electrical component box 30 has a top surface 31, a right side surface 32, a left side surface 33, a back surface 34, and a bottom surface 35, and has a box shape with an open front surface.
- a plurality of electrical components 28 are accommodated in the electrical component box 30.
- the electrical component box 30 is open at the front so that the electrical component box 30 can work on the electrical components 28 in the electrical component box 30 immediately after the front panel 26 of the main body 20 is opened. It has come to double as.
- a fall prevention plate 40 that is a characteristic part of the first embodiment is arranged below the electrical component box 30. The fall prevention plate 40 will be described again.
- FIG. 5 is a front view of the electrical component box of the heat pump apparatus according to Embodiment 1 of the present invention.
- FIG. 6 is a bottom view of FIG.
- FIG. 7 is a layout diagram of an electrical component box and a fall prevention plate in the indoor unit of the heat pump apparatus according to Embodiment 1 of the present invention.
- the electrical box 30 has different depths on the left and right around the center. 6, the left side indicated by 30A has a short depth, and the right side indicated by 30B in FIG. 6 has a long depth.
- a short electrical component is arranged on the left side with a short depth
- a tall electrical component is arranged on the right side with a long depth.
- a terminal block 28c and a circuit board 28d are arranged as the short electric parts, and here, a breaker 28a and a conductor 28b are arranged as the tall electric parts.
- the electrical component box 30 has a flange portion 36 that extends downward from the front end surface of the bottom surface 35, and a cable strap 28 e is attached to the flange portion 36 so that the wirings 37 can be bundled.
- flanges 32 a and 33 a extending outward from the front end surface are formed on each of the right side surface 32 and the left side surface 33.
- Each of the flanges 32a and 33a is formed with claws 32aa and 33aa at two upper and lower portions.
- the electrical component box 30 is temporarily fixed to the main body 20 by being inserted into FIG. Then, after temporarily fixing the electrical component box 30, screws (not illustrated) are tightened into screw holes (not illustrated) provided in the right side surface 32 and the left side surface 33 of the electrical component box 30.
- the electrical component box 30 is permanently fixed to the right panel 22 and the left panel 23.
- FIG. 8 is a front view of the indoor unit of the heat pump device according to Embodiment 1 of the present invention.
- FIG. 9 is a schematic sectional view taken along the line ZZ in FIG.
- FIG. 10 is an enlarged view of a portion surrounded by a dotted line in FIG.
- the bottom surface 35 of the electrical component box 30 has a front end surface 35a behind the front end surfaces of the other side surfaces (upper surface 31, right side surface 32, left side surface 33) constituting the electrical component box 30 as shown in FIG.
- An opening S is formed between the front end surface 35 a of the bottom surface 35 and the front panel 26 of the main body 20.
- the opening S serves as a passage through which the wiring 37 connected to the electrical component 28 in the electrical component box 30 is taken out, so that the wiring 37 is taken out of the electrical component box 30 through a path indicated by a dotted arrow in FIG. It has become.
- the length in the front-rear direction of the bottom surface 35 of the electrical component box 30 is set to the same length as the other side surfaces constituting the electrical component box 30, and the opening S is not provided between the bottom surface 35 and the front panel 26. Block it. Then, there is a method of making a plurality of holes in the bottom surface 35 and taking out each wiring 37 from each hole.
- the bottom surface 35 is configured such that the front end surface 35a is positioned behind the front end surface of the other side surface of the electrical component box 30, and the opening S through which the plurality of wirings 37 can be taken out is formed. This is advantageous in terms of processing effort and cost. Even when the method of forming the opening S is used, it is necessary to perform rounding processing such as hemming so as not to damage the coating of the wiring 37 in the portion where the wiring 37 contacts, The processing effort is simpler than for each hole.
- holes 25b and 25c for taking out the wiring 37 out of the main body 20 are provided in each of the drain pan 25a and the bottom panel 25 below the electrical component box 30 as shown in FIG.
- a rubber bush 25d is disposed at the edge portion of the hole 25c of the bottom panel 25. Then, the wiring taken out from the electrical component box 30 is guided out of the main body 20 through the holes 25b and 25c.
- the wiring length is not wasted, so that the cost can be reduced. Further, since it is not necessary to make the wiring 37 go around, the number of wiring fixing points can be reduced, and the workability is improved.
- the use of the opening S has the advantages as described above as compared with the case of using a plurality of holes in the bottom surface 35. Necessary. That is, when a fire occurs inside the electrical component box 30 and the electrical components 28 are melted by the heat and fall from the installation position, the opening S becomes a passage to the main body 20 of the molten fallen object. For this reason, the structure in which a molten fall thing does not fall to the main body 20 is required.
- the characteristic feature of the first embodiment is that a fall prevention plate 40 made of sheet metal is disposed below the electrical component box 30.
- the fall prevention plate 40 is disposed at a position spaced downward from the electrical component box 30 as shown in FIG. 10 so as not to block the extraction path of the wiring 37 from the opening S, and the opening S is formed from the lower side. Covering.
- the material of the fall prevention plate 40 may not be a sheet metal as long as it fulfills the function of receiving the molten fallen material, and may be any non-combustible material.
- the configuration of the fall prevention plate 40 will be further described.
- FIG. 11 is a perspective view of a fall prevention plate in the indoor unit of the refrigeration cycle apparatus according to Embodiment 1 of the present invention.
- 12A and 12B are diagrams showing a fall prevention plate in the indoor unit of the refrigeration cycle apparatus according to Embodiment 1 of the present invention, where FIG. 12A is a plan view and FIG. 12B is a side view.
- FIG. 13 is an enlarged view of FIG.
- the fall prevention plate 40 has a vertical surface 41 extending in the left-right direction and having claws 41a formed at both ends thereof, and a receiving surface 42 extending rearward from the lower end of the vertical surface 41 and receiving a molten fallen object. It is formed in an L shape in side view.
- the receiving surface 42 is configured as a flat plate.
- the fall prevention plate 40 is formed by inserting the claws 41a formed at both ends of the vertical surface 41 into the square holes 22b and 23b (see FIG. 7) provided in the main body 20 corresponding to the claws 41a. 20 is temporarily fixed. Then, after temporarily fixing, screws (not shown) are passed through through holes 41b provided at both ends of the vertical surface 41 of the fall prevention plate 40, and screw holes (not shown) provided in the main body 20 are passed.
- the fall prevention plate 40 is permanently fixed to the right panel 22 and the left panel 23 of the main body 20 by tightening.
- the shape of the fall prevention plate 40 is not limited to the shape shown in FIGS. 11 to 13 and may be configured as shown in FIG. Hereinafter, variations in the shape of the fall prevention plate 40 will be described with reference to FIG.
- FIG. 14 is a diagram showing another variation of the fall prevention plate for the indoor unit of the refrigeration cycle apparatus according to Embodiment 1 of the present invention.
- 14 (a) is a plan view
- FIGS. 14 (b) to 14 (e) are YY cross-sectional views of FIG. 14 (a).
- the fall prevention plate 40 shown in FIGS. 11 to 13 has an L shape with an angle ⁇ of 90 ° between the vertical surface 41 and the receiving surface 42, and the receiving surface 42 is a horizontal plane extending in the horizontal direction.
- (b) is an inclined surface in which ⁇ is an acute angle and the receiving surface 42 rises toward the rear.
- (C) has a shape in which the rear end of the receiving surface 42 in (a) is bent upward.
- the receiving surface 42 has a shape having a standing surface 43 that is erected upward at the rear end portion. This shape is a shape that can prevent dropping to the main body 20 even when the molten fallen object is large and when the molten fallen object may roll.
- the receiving surface 42 has a convex downward shape.
- (d) is an R shape
- (e) is the center in the front-rear direction of the receiving surface 42 as the lowest point.
- the shape has a corner portion with a bending angle ⁇ .
- the lowermost portion of the receiving surface 42 is the central portion in the front-rear direction of the receiving surface 42.
- the position is not limited to this position. Also good.
- the example which provided the standing surface 43 of said (c) is shown in (d) and (e), it is good also as a structure which does not provide the standing surface 43.
- the fall prevention plate 40 is below the electrical component box 30, and the receiving surface 42 of the fall prevention plate 40 overlaps with the opening S when seen in a plan view, and the receiving surface 42 and the bottom surface 35 of the electrical component box 30. It is configured to overlap in a plan view. That is, the length in the front-rear direction of the receiving surface 42 is a length obtained by adding the overlap to the length in the front-rear direction of the opening S. Further, the length of the receiving surface 42 in the left-right direction may be the same as the length of the opening S in the left-right direction.
- the vertical surface 41 only needs to be high enough to be provided with fixing portions such as the claw 41a and screw holes.
- the fall prevention plate 40 By arranging and configuring the fall prevention plate 40 as described above, the molten fallen material that has fallen through the opening S is received by the receiving surface 42. Accordingly, it is possible to prevent the inconvenience that the molten fallen material falls onto the bottom panel 25 of the main body 20 through the opening S and spreads to other components in the main body 20.
- FIG. 15 is an explanatory diagram for setting the dimensions of the electrical component box and the fall prevention plate of the heat pump apparatus according to Embodiment 1 of the present invention.
- the front end surface 35a of the bottom surface 35 of the electrical component box 30 and the rear end surface 42a of the receiving surface 42 of the fall prevention plate 40 are located in the wiring 37 extraction path as shown in FIG. For this reason, the bending state of the wiring 37 when the wiring 37 is taken out depends on the position of the front end surface 35a of the bottom surface 35 of the electrical component box 30 in the front-rear direction and the position of the rear end surface 42a of the receiving surface 42 of the fall prevention plate 40. It will change.
- the bending state of the wiring 37 when the wiring 37 is taken out changes depending on the lengths of the bottom surface 35 of the electrical component box 30 and the receiving surface 42 of the fall prevention plate 40 in the depth direction.
- the front end surface 35a of the bottom surface 35 of the electrical component box 30 and the rear end surface 42a of the receiving surface 42 of the fall prevention plate 40 that are located on the wiring 37 take-out path are hemmed so as not to damage the coating of the wiring 37. It is preferable to perform rounding such as.
- the depth length L 1 of the opening S is short, it is possible to narrow the fall range of melt falling objects.
- the depth length L 2 of the bottom surface 35 becomes longer as L 1 is shorter, and the front surface of the flange portion 36 of the electrical component box 30 is the front surface.
- the panel 26 will be approached.
- the cable strap 28e (see FIG. 5) attached to the front surface of the flange portion 36 comes into contact with the front panel 26. Therefore, this contact does not occur, in range with a sufficient clearance between the cable strap 28e and the front panel 26, the front face of the flange portion 36 as possible to set the L 1 to be close to the front panel 26 Better.
- L 1 is the vertical distance between the terminal connection portion of the electrical component 28 arranged at the lowest position in the electrical component box 30 and the bottom surface 35 of the electrical component box 30.
- the distance H 1 can not take longer may When L 2 ⁇ L 3 in order to avoid excessive stress as described above to the terminal connecting portion is applied. If L 2 ⁇ L 3 , the wiring 37 can be taken out from the terminal connection portion as it is without bending forward from the terminal connection portion, so that it is possible to avoid applying excessive stress to the terminal connection portion. .
- the value of the depth length L 4 of the fall prevention plate 40 is adjusted to overlap the bottom surface 35 of the electrical component box 30 and the receiving surface 42 of the fall prevention plate 40. by secured to L 5, it can maintain the function of preventing the molten drop.
- H 2 is the vertical distance between the lower end of the electrical component box 30 and the receiving surface 42 of the fall prevention plate 40.
- the wiring 37 has an allowable minimum bending radius according to its hardness, and if it is bent with a bending radius smaller than the allowable minimum bending radius, an excessive stress is applied to the wiring 37. Therefore, the bending radius of the wire 37 between withdrawn to the rear of the drop preventing plate 40 through the opening portion S, so as not to smaller bending radius than the allowable minimum bend radius, setting the L 5 and H 2 Is required.
- the following describes settings of L 5 and H 2 corresponding to the minimum permissible bending radius.
- FIG. 16 is an explanatory diagram of the bending radius of the wiring from the lower end of the electrical component box to the rear of the fall prevention plate in the case of L 5 ⁇ H 2 in the heat pump device according to Embodiment 1 of the present invention.
- FIG. 18 is an explanatory diagram of the bending radius of the wiring from the lower end of the electrical component box to the rear of the fall prevention plate in the heat pump device according to Embodiment 1 of the present invention when L 5 > H 2 .
- the wiring 37 extends in the vertical direction and is not tilted left and right outside the range from the lower end of the electrical component box 30 to the fall prevention plate 40.
- the bending radius R B of the wiring 37 extending from the lower end of the electrical component box 30 to the rear of the drop preventing plate 40 is determined as follows by the relationship between L 5 and H 2.
- the shape of the wiring 37 extending from the lower end of the electrical component box 30 to the rear of the fall prevention plate 40 is two arcs 60 and 61 having bending directions opposite to each other. Can be approximated to the shape connected by the central point 50 of L 5 and H 2 .
- the arc 60 is an arc passing through the point 51 and the point 50 on the lower end of the electrical component box 30 and the arc tangent at the point 51 is vertical.
- the arc 61 is an arc passing through the point 50 and a point 52 on the rear end of the receiving surface 42 of the fall prevention plate 40 and a tangent at the point 52 is vertical. Therefore, the bending radius R B of the wiring 37 is determined as follows from the Pythagorean theorem.
- Figure 17 is an explanatory view of a bending radius R B of the wiring in a heat pump apparatus according to the first embodiment of the present invention.
- a line segment is drawn from the points 50 and 51 at both ends of the arc 60 to the center point O of the arc 60. Further, a perpendicular line is drawn from the point 50 to the line segment connecting the point 51 and the point O, and the intersection point is set as P. Then, a triangle surrounded by the point 50, the point O, and the point P is formed.
- Point 50 is the length of a line connecting the point O R B, the length of a line connecting the points 50 and P H 2/2, the length of a line connecting the point O and the point P is R B the -L 5/2. For this reason, the following equation (1) holds from the three-square theorem.
- the R B in the formula (4) obtained by substituting the allowable minimum bend radius R MIN of the wiring 37, so as to satisfy the following equation (5) may be set to H 2.
- equation (4) is a case of L 5> H 2
- L 5> H 2 of course, while satisfying the relationship L 5> H 2, will set the L 5 and H 2.
- L 5 and H 2 so as to satisfy the relationship of the expression (5), the wiring 37 can be designed so that excessive stress is not applied.
- the wiring 37 can be taken out from the electrical component box 30 through the opening S from the bottom surface 35 side of the electrical component box 30.
- the electrical component 28 melts and falls, it falls on the bottom surface 35 of the electrical component box 30 or the opening S of the electrical component box 30. Fall further from.
- the electrical component 28 is received by the receiving surface 42 of the fall prevention plate 40. You can catch it. For this reason, it is possible to prevent fire spread to other components in the main body 20.
- the shape of the receiving surface 42 of the fall prevention plate 40 can be formed in various variations as described above.
- the main body of the indoor unit 100 has been described as an example of the “main body” provided with the electrical component box 30 and the fall prevention plate 40.
- the main body of the outdoor unit 200 may be used.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Other Air-Conditioning Systems (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
This heat pump device is provided with: a main body; and an electric component box having an opened front face, said electric component box being disposed in the main body, and housing an electric component therein. The main body has a front surface panel covering the opening in the front face of the electric component box, the front end surface of the bottom surface of the electric component box is positioned further toward the rear side than the front end surfaces of other side surfaces of the electric component box, and an opening, which is to be a path for taking out, to the outside of the electric component box, wiring connected to the electric component, is formed between the front surface panel and the front end surface of the bottom surface of the electric component box. A fall prevention plate is disposed below the electric component box, said fall prevention plate being provided with a receiving surface covering, at a position separated from the electric component box, the opening.
Description
この発明は、電気品箱を内部に備えた本体を有するヒートポンプ装置に関する。
This invention relates to a heat pump apparatus having a main body with an electrical box inside.
ヒートポンプ装置を構成する室内機または室外機の本体内には、電気品箱が設置されている。電気品箱は複数の電気部品が実装された回路基板を内部に備えており、回路基板上の端子接続部に一端が接続された配線の他端が、電気品箱に設けた配線取り出し用の開口部を介して外部に取り出されるようになっている。そして、従来のヒートポンプ装置は、電気部品が不具合で発火するなどした場合に、電気部品が溶けて電気品箱内で落下し、さらに電気品箱の開口部から本体内に落下することを防止する構造を備えている(特許文献1参照)。
An electrical component box is installed in the main body of the indoor unit or outdoor unit constituting the heat pump device. The electrical component box includes a circuit board on which a plurality of electrical components are mounted, and the other end of the wiring whose one end is connected to the terminal connection portion on the circuit board is used for taking out the wiring provided in the electrical component box. It is taken out to the outside through the opening. The conventional heat pump device prevents the electrical component from melting and falling in the electrical component box when the electrical component is ignited due to a malfunction, and further falling from the opening of the electrical component box into the main body. It has a structure (see Patent Document 1).
特許文献1では、回路基板が電気品箱の底面と対向して設置されており、回路基板上の端子接続部と対向して前記配線取り出し用の開口部が電気品箱の底面に形成されている。そして、配線取り出し用の開口部と対向する回路基板上の領域には、熱で溶ける可能性のある電気部品を実装せず、また、配線取り出し用の開口部の周囲に、その開口部の周縁から上方に鉛直に延びるフランジを設けた構造としている。この構造とすることで、電気部品が熱で溶けて回路基板から落下した場合でも、電気品箱の底面が受け止め、また、フランジが防壁となって電気部品が開口部から飛び出さずに電気品箱内に留まるようにしている。
In Patent Document 1, the circuit board is installed facing the bottom surface of the electrical component box, and the opening for taking out the wiring is formed on the bottom surface of the electrical component box facing the terminal connection portion on the circuit substrate. Yes. In the area on the circuit board that faces the opening for extracting the wiring, no electrical component that can be melted by heat is mounted, and the periphery of the opening is formed around the opening for extracting the wiring. It is the structure which provided the flange extended vertically from the top. With this structure, even if the electrical component melts with heat and falls from the circuit board, the bottom of the electrical component box is received, and the flange prevents the electrical component from jumping out of the opening. It stays in the box.
電気品箱からの配線の取り出しは、配線の引き回し上、電気品箱の底面から行うことが好ましい。特許文献1では、電気品箱の底面から配線の取り出しを行うことが可能であるものの、電気品箱の底面に設けた開口部と対向する回路基板上の領域に、溶けて落下する可能性のある電気部品を設けられないという制約が生じ、使い勝手の悪い構造となっていた。
It is preferable that the wiring is taken out from the electrical component box from the bottom of the electrical component box after the wiring is routed. In Patent Document 1, although it is possible to take out the wiring from the bottom surface of the electrical component box, there is a possibility of melting and dropping in the region on the circuit board facing the opening provided on the bottom surface of the electrical component box. There was a restriction that some electrical parts could not be installed, and the structure was inconvenient.
この発明は、上記のような課題を解決するためになされたもので、電気品箱の底面からの配線の取り出しを可能としつつ、配線取り出しのための開口部よりも上方に配置されている電気部品が本体へ溶融落下することを防止することが可能なヒートポンプ装置を提供することを目的とする。
The present invention has been made to solve the above-described problems, and enables an electric wire disposed above an opening for taking out the wiring while allowing the wiring to be taken out from the bottom of the electric component box. It is an object of the present invention to provide a heat pump device capable of preventing parts from being melted and dropped onto a main body.
この発明に係るヒートポンプ装置は、本体と、本体内に配置され、内部に電気部品を収納する、前面が開口した箱状の電気品箱とを備え、本体は、電気品箱の前面の開口を覆う前面パネルを有し、電気品箱の底面の前端面は、電気品箱の他の側面の前端面よりも後方に位置し、電気品箱の底面の前端面と前面パネルとの間に、電気部品に接続された配線を電気品箱の外に取り出す通路となる開口部が形成されており、電気品箱の下方に、電気品箱から離れた位置で開口部を覆う受け面を備えた落下防止板が配置されているものである。
A heat pump device according to the present invention includes a main body and a box-shaped electric box that is disposed in the main body and accommodates electrical components therein, and has a front opening. The main body has an opening on the front of the electric box. The front end surface of the bottom surface of the electrical component box is located behind the front end surface of the other side surface of the electrical component box, and between the front end surface of the bottom surface of the electrical component box and the front panel, An opening serving as a passage for taking out the wiring connected to the electrical component is formed outside the electrical component box, and a receiving surface is provided below the electrical component box to cover the opening at a position away from the electrical component box. A fall prevention plate is arranged.
この発明によれば、電気品箱の底面の前端面と本体の前面パネルとの間に、配線を電気品箱から取り出す通路となる開口部が形成されているので、開口部を介して電気品箱の底面から配線を取り出すことが可能である。また、電気品箱の下方に、電気品箱から離れた位置で開口部を覆う受け面を備えた落下防止板が配置されているので、開口部よりも上方に配置されている電気部品が本体へ溶融落下することを防止することができる。
According to the present invention, the opening serving as a passage for taking out the wiring from the electrical component box is formed between the front end surface of the bottom surface of the electrical component box and the front panel of the main body. Wiring can be taken out from the bottom of the box. Moreover, since the fall prevention plate with the receiving surface which covers an opening part in the position away from an electrical component box is arrange | positioned under the electrical component box, the electrical component arrange | positioned above the opening part is a main body. It is possible to prevent melting and dropping.
以下、図面を参照して、この発明の実施の形態について説明する。なお、各図中、同一または相当する部分には、同一符号を付して、その説明を適宜省略または簡略化する。また、各図に記載の構成について、その形状、大きさおよび配置などは、この発明の範囲内で適宜変更することができる。
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and the description thereof is omitted or simplified as appropriate. Moreover, the shape, size, arrangement, and the like of the configurations described in the drawings can be appropriately changed within the scope of the present invention.
実施の形態1.
図1は、この発明の実施の形態1に係るヒートポンプ装置の代表的な構成を示す図である。
ヒートポンプ装置は、ヒートポンプ室内機(以下、単に室内機という)100と、室外機200と、タンク17を備えた客先選択部品300とを備えている。 Embodiment 1 FIG.
FIG. 1 is a diagram showing a typical configuration of a heat pump apparatus according to Embodiment 1 of the present invention.
The heat pump device includes a heat pump indoor unit (hereinafter simply referred to as an indoor unit) 100, anoutdoor unit 200, and a customer selection component 300 including a tank 17.
図1は、この発明の実施の形態1に係るヒートポンプ装置の代表的な構成を示す図である。
ヒートポンプ装置は、ヒートポンプ室内機(以下、単に室内機という)100と、室外機200と、タンク17を備えた客先選択部品300とを備えている。 Embodiment 1 FIG.
FIG. 1 is a diagram showing a typical configuration of a heat pump apparatus according to Embodiment 1 of the present invention.
The heat pump device includes a heat pump indoor unit (hereinafter simply referred to as an indoor unit) 100, an
室内機100は、熱交換器1、ポンプ2、流量センサ3、ストレーナ4、バルブ5、バルブ6、空気逃がし弁7、圧力逃がし弁8および圧力計9を備えている。また、室外機200は、圧縮機15、熱交換器14、減圧装置16などを備えている。そして、圧縮機15、熱交換器1、減圧装置16、熱交換器14が順次配管で接続されて例えばR410Aなどの一次冷媒が循環する冷媒回路Aが構成されている。また、熱交換器1、ポンプ2、バルブ6、流量センサ3、タンク17、バルブ5、ストレーナ4が順次配管で接続されて、水回路Bが構成されている。水回路Bには、冷媒回路Aを循環する一次冷媒と熱交換して加熱される例えば水などの二次冷媒が流れるようになっている。
The indoor unit 100 includes a heat exchanger 1, a pump 2, a flow sensor 3, a strainer 4, a valve 5, a valve 6, an air relief valve 7, a pressure relief valve 8, and a pressure gauge 9. The outdoor unit 200 includes a compressor 15, a heat exchanger 14, a decompression device 16, and the like. The compressor 15, the heat exchanger 1, the pressure reducing device 16, and the heat exchanger 14 are sequentially connected by a pipe to configure a refrigerant circuit A in which a primary refrigerant such as R410A circulates. Further, the heat exchanger 1, the pump 2, the valve 6, the flow rate sensor 3, the tank 17, the valve 5, and the strainer 4 are sequentially connected by piping to constitute the water circuit B. In the water circuit B, a secondary refrigerant such as water that is heated by exchanging heat with the primary refrigerant circulating in the refrigerant circuit A flows.
冷媒回路Aでは、圧縮機15から吐出された高温高圧の一次冷媒が熱交換器1に流入し、水回路Bの二次冷媒と熱交換して放熱し、凝縮液化する。その後、冷媒は減圧装置16で減圧されて低圧の二相冷媒となり、熱交換器14に流入する。熱交換器14に流入した冷媒は、熱交換器14を通過する空気と熱交換して吸熱し、ガス化する。ガス化した冷媒は、再び圧縮機15に吸入される。
In the refrigerant circuit A, the high-temperature and high-pressure primary refrigerant discharged from the compressor 15 flows into the heat exchanger 1, exchanges heat with the secondary refrigerant in the water circuit B, dissipates heat, and condensates. Thereafter, the refrigerant is decompressed by the decompression device 16 to become a low-pressure two-phase refrigerant and flows into the heat exchanger 14. The refrigerant that has flowed into the heat exchanger 14 exchanges heat with the air passing through the heat exchanger 14 to absorb heat and gasify. The gasified refrigerant is sucked into the compressor 15 again.
水回路Bでは、二次冷媒である水が熱交換器1を通過する冷媒回路Aの一次冷媒と熱交換して一次冷媒の熱を受け取り、お湯となる。
In the water circuit B, water as the secondary refrigerant exchanges heat with the primary refrigerant in the refrigerant circuit A that passes through the heat exchanger 1 to receive the heat of the primary refrigerant and become hot water.
熱交換器1で得られたお湯はポンプ2によって客先選択部品300へと送られ、タンク17に貯湯される。
Hot water obtained in the heat exchanger 1 is sent to the customer selection part 300 by the pump 2 and stored in the tank 17.
以上がこの実施の形態1における冷媒回路Aおよび水回路Bの流れとなるが、これらの仕組みは常に稼働しているわけではない。冷媒回路Aおよび水回路Bのそれぞれに設置されている各計測器、タンク17に設置されている熱電対(図示せず)または流量センサ3から得られる情報をもとに、制御回路101が各部品の制御を行っている。
The above is the flow of the refrigerant circuit A and the water circuit B in the first embodiment, but these mechanisms are not always operating. On the basis of information obtained from each measuring instrument installed in each of the refrigerant circuit A and the water circuit B, a thermocouple (not shown) installed in the tank 17 or the flow sensor 3, the control circuit 101 Controls parts.
ここで、室内機100の構成についてさらに説明する。
室内機100は、ポンプ2から客先選択部品300へお湯が送られる経路の途中に、空気逃がし弁7、バルブ6、圧力逃がし弁8、圧力計9、流量センサ3を備えている。 Here, the configuration of theindoor unit 100 will be further described.
Theindoor unit 100 includes an air relief valve 7, a valve 6, a pressure relief valve 8, a pressure gauge 9, and a flow rate sensor 3 in the middle of a path through which hot water is sent from the pump 2 to the customer selection component 300.
室内機100は、ポンプ2から客先選択部品300へお湯が送られる経路の途中に、空気逃がし弁7、バルブ6、圧力逃がし弁8、圧力計9、流量センサ3を備えている。 Here, the configuration of the
The
流量センサ3は水回路B内の水量の測定を行う。空気逃がし弁7は配管内の空気の排出を行う。圧力逃がし弁8は水回路B内部の水圧が過剰とならないよう圧力の調整を行う。圧力計9は水回路B内の水圧の測定を行う。
The flow sensor 3 measures the amount of water in the water circuit B. The air relief valve 7 discharges air in the pipe. The pressure relief valve 8 adjusts the pressure so that the water pressure inside the water circuit B does not become excessive. The pressure gauge 9 measures the water pressure in the water circuit B.
また熱交換器1を挟んで反対側の、熱交換器1へ水を送り込む配管にはストレーナ4、バルブ5が設けられている。ストレーナ4は水回路B内の固形不純物のろ過を行う。バルブ5は前述バルブ6と組み合わせて使用され、両バルブ5、6を閉じることにより水路の分断を可能にする。メンテナンス時に両バルブ5、6を閉じて水路を分断することで、熱交換器1またはポンプ2の交換を容易に行えるようになっている。
Also, a strainer 4 and a valve 5 are provided on the pipe on the opposite side of the heat exchanger 1 that feeds water to the heat exchanger 1. The strainer 4 filters solid impurities in the water circuit B. The valve 5 is used in combination with the valve 6 described above, and the water channel can be divided by closing both the valves 5 and 6. The heat exchanger 1 or the pump 2 can be easily replaced by closing both the valves 5 and 6 and dividing the water channel during maintenance.
以上のように構成された室内機100は、冷媒入ジョイント10と冷媒出ジョイント11とで室外機200に接続される。また、室内機100は、水入ジョイント12と水出ジョイント13とで客先選択部品300に接続される。
The indoor unit 100 configured as described above is connected to the outdoor unit 200 through the refrigerant input joint 10 and the refrigerant output joint 11. In addition, the indoor unit 100 is connected to the customer selection component 300 at the water-filling joint 12 and the water-out joint 13.
客先選択部品300は、タンク17の他、三方弁18および圧力逃がし弁19を備えている。客先選択部品300は、上述したようにしてタンク17に貯められたお湯を、三方弁18にて温度を調節したのち、出湯させる仕組みとなっている。圧力逃がし弁19は、タンク17の内圧が過剰とならないように、タンク17の内圧が所定圧に達した時に開弁されるようになっている。
The customer selection component 300 includes a three-way valve 18 and a pressure relief valve 19 in addition to the tank 17. The customer selection component 300 has a mechanism in which the hot water stored in the tank 17 as described above is adjusted by the three-way valve 18 and then discharged. The pressure relief valve 19 is opened when the internal pressure of the tank 17 reaches a predetermined pressure so that the internal pressure of the tank 17 does not become excessive.
図1に示した客先選択部品300は基本的な構成であり、実際にはさらに以下の構成を備えている場合もある。例えば、床暖房またはラジエータなどの温調機器に導かれる水とお湯との間で熱交換を行う二次熱交換機、お湯の生成を早めるためのヒータ、タンク17内の水に浸して直接、水を温める浸水ヒータ、を備えているものなど、客先選択部品300には多くのバリエーションが存在している。
The customer selection part 300 shown in FIG. 1 has a basic configuration, and may actually further include the following configuration. For example, a secondary heat exchanger for exchanging heat between water and hot water led to a temperature control device such as floor heating or a radiator, a heater for accelerating the generation of hot water, water immersed in water in the tank 17 and directly There are many variations in the customer selection component 300, such as those equipped with a submerged heater that warms up.
また、これらの客先選択部品300を室内機100が内包していてもよい。また、室内機100において、バルブ6、空気逃がし弁7および圧力逃がし弁8などの部品の接続順序は、図1に示した順序に限定されず、異なっていてもよい。
Moreover, the indoor unit 100 may include these customer selection parts 300. In the indoor unit 100, the connection order of components such as the valve 6, the air relief valve 7, and the pressure relief valve 8 is not limited to the order shown in FIG. 1 and may be different.
図2は、この発明の実施の形態1に係るヒートポンプ装置の室内機の外形斜視図である。図3は、この発明の実施の形態1に係るヒートポンプ装置の室内機の分解斜視図である。図4は、この発明の実施の形態1に係るヒートポンプ装置の室内機の水回路の分解斜視図である。なお、以下の説明で用いる「上」「下」「左」「右」「前」「後」は、特にことわらない限り、室内機100を前面側から見た場合の方向を意味している。
FIG. 2 is an external perspective view of the indoor unit of the heat pump apparatus according to Embodiment 1 of the present invention. FIG. 3 is an exploded perspective view of the indoor unit of the heat pump apparatus according to Embodiment 1 of the present invention. FIG. 4 is an exploded perspective view of the water circuit of the indoor unit of the heat pump apparatus according to Embodiment 1 of the present invention. Note that “upper”, “lower”, “left”, “right”, “front”, and “rear” used in the following description mean directions when the indoor unit 100 is viewed from the front side unless otherwise specified. .
室内機100の本体20は、上面パネル21、右面パネル22、左面パネル23、背面パネル24、底面パネル25および前面パネル26によって構成された直方体形状となっている。前面パネル26には、圧力計9と、水温などの設定を行うための操作盤27が取り付けられ、外部から水圧および水温の確認、操作盤27を介した各種操作が可能になっている。
The main body 20 of the indoor unit 100 has a rectangular parallelepiped shape including an upper panel 21, a right panel 22, a left panel 23, a rear panel 24, a bottom panel 25, and a front panel 26. A pressure gauge 9 and an operation panel 27 for setting the water temperature and the like are attached to the front panel 26, and the water pressure and the water temperature can be confirmed from outside and various operations can be performed via the operation panel 27.
底面パネル25には冷媒入ジョイント10、冷媒出ジョイント11、水入ジョイント12および水出ジョイント13が取り付けてあり、室外機200および客先選択部品300などの外部の機器はここに接続される。また底面パネル25の上部にはドレインパン25aが設置され、水回路Bより露垂れした水などを本体20の外部へと排水できるようになっている。
The bottom panel 25 is provided with a refrigerant joint 10, a refrigerant joint 11, a water joint 12, and a water joint 13, and external devices such as the outdoor unit 200 and the customer selection part 300 are connected thereto. In addition, a drain pan 25 a is installed on the upper portion of the bottom panel 25 so that water dripped from the water circuit B can be drained to the outside of the main body 20.
本体20内の前面側には、不燃材料である板金で作られた電気品箱30が配置されている。電気品箱30は、上面31、右側面32、左側面33、背面34、底面35を有し、前面が開口した箱状を成している。電気品箱30の内部には複数の電気部品28が収納されている。電気品箱30は、本体20の前面パネル26を開けて直ぐに電気品箱30内の電気部品28などに対して作業できるように前面が開口しており、前面パネル26が電気品箱30の蓋を兼ねるようになっている。
An electrical component box 30 made of sheet metal, which is a non-combustible material, is disposed on the front side in the main body 20. The electrical component box 30 has a top surface 31, a right side surface 32, a left side surface 33, a back surface 34, and a bottom surface 35, and has a box shape with an open front surface. A plurality of electrical components 28 are accommodated in the electrical component box 30. The electrical component box 30 is open at the front so that the electrical component box 30 can work on the electrical components 28 in the electrical component box 30 immediately after the front panel 26 of the main body 20 is opened. It has come to double as.
また、電気品箱30の下方には本実施の形態1の特徴部分である落下防止板40が配置されている。落下防止板40については改めて説明する。
Further, a fall prevention plate 40 that is a characteristic part of the first embodiment is arranged below the electrical component box 30. The fall prevention plate 40 will be described again.
図5は、この発明の実施の形態1に係るヒートポンプ装置の電気品箱の正面図である。図6は、図5の下面図である。図7は、この発明の実施の形態1に係るヒートポンプ装置の室内機における電気品箱および落下防止板の配置図である。
FIG. 5 is a front view of the electrical component box of the heat pump apparatus according to Embodiment 1 of the present invention. FIG. 6 is a bottom view of FIG. FIG. 7 is a layout diagram of an electrical component box and a fall prevention plate in the indoor unit of the heat pump apparatus according to Embodiment 1 of the present invention.
電気品箱30は中央付近を境に左右で奥行きが異なっている。図6において30Aで示した左側は奥行きが短く、図6において30Bで示した右側は奥行きが長くなっている。そして、奥行きの短い左側には背の低い電気部品が配置され、奥行きの長い右側には背の高い電気部品が配置される。背の低い電気部品として、ここでは、端子台28cと、回路基板28dとが配置され、背の高い電気部品として、ここでは、ブレーカ28aと、コンダクタ28bとが配置されている。また、電気品箱30は、底面35の前端面から下方に延びるフランジ部36を有し、フランジ部36には、ケーブルストラップ28eが取り付けられ、配線37をまとめられるようになっている。
The electrical box 30 has different depths on the left and right around the center. 6, the left side indicated by 30A has a short depth, and the right side indicated by 30B in FIG. 6 has a long depth. A short electrical component is arranged on the left side with a short depth, and a tall electrical component is arranged on the right side with a long depth. Here, a terminal block 28c and a circuit board 28d are arranged as the short electric parts, and here, a breaker 28a and a conductor 28b are arranged as the tall electric parts. The electrical component box 30 has a flange portion 36 that extends downward from the front end surface of the bottom surface 35, and a cable strap 28 e is attached to the flange portion 36 so that the wirings 37 can be bundled.
電気品箱30において右側面32および左側面33のそれぞれには、その前端面から外方に延びるフランジ32a、33aが形成されている。フランジ32a、33aのそれぞれには、上下2箇所に爪32aa、33aaが形成されており、爪32aa、33aaを、この爪32aa、33aaと対応して本体20に設けられた角穴22a、23a(図7参照)に差し込むことで電気品箱30が本体20に仮固定されるようになっている。そして、電気品箱30の仮固定を行ったのち、同じく電気品箱30の右側面32および左側面33に設けられたネジ穴(図示せず)にネジ(図示せず)を締め込むことで、電気品箱30が右面パネル22と左面パネル23へ本固定される。
In the electrical component box 30, flanges 32 a and 33 a extending outward from the front end surface are formed on each of the right side surface 32 and the left side surface 33. Each of the flanges 32a and 33a is formed with claws 32aa and 33aa at two upper and lower portions. The electrical component box 30 is temporarily fixed to the main body 20 by being inserted into FIG. Then, after temporarily fixing the electrical component box 30, screws (not illustrated) are tightened into screw holes (not illustrated) provided in the right side surface 32 and the left side surface 33 of the electrical component box 30. The electrical component box 30 is permanently fixed to the right panel 22 and the left panel 23.
図8は、この発明の実施の形態1に係るヒートポンプ装置の室内機の正面図である。図9は、図8のZ-Z概略断面図である。図10は、図9の点線で囲った部分の拡大図である。
電気品箱30の底面35は、その前端面35aが、図9に示すように電気品箱30を構成する他の側面(上面31、右側面32、左側面33)の前端面よりも後方に位置して底面35の前端面35aと本体20の前面パネル26との間には開口部Sが形成されている。開口部Sは、電気品箱30内の電気部品28に接続された配線37を取り出す通路となるものであり、図10の点線矢印に示す経路で配線37が電気品箱30外へ取り出されるようになっている。 FIG. 8 is a front view of the indoor unit of the heat pump device according to Embodiment 1 of the present invention. FIG. 9 is a schematic sectional view taken along the line ZZ in FIG. FIG. 10 is an enlarged view of a portion surrounded by a dotted line in FIG.
Thebottom surface 35 of the electrical component box 30 has a front end surface 35a behind the front end surfaces of the other side surfaces (upper surface 31, right side surface 32, left side surface 33) constituting the electrical component box 30 as shown in FIG. An opening S is formed between the front end surface 35 a of the bottom surface 35 and the front panel 26 of the main body 20. The opening S serves as a passage through which the wiring 37 connected to the electrical component 28 in the electrical component box 30 is taken out, so that the wiring 37 is taken out of the electrical component box 30 through a path indicated by a dotted arrow in FIG. It has become.
電気品箱30の底面35は、その前端面35aが、図9に示すように電気品箱30を構成する他の側面(上面31、右側面32、左側面33)の前端面よりも後方に位置して底面35の前端面35aと本体20の前面パネル26との間には開口部Sが形成されている。開口部Sは、電気品箱30内の電気部品28に接続された配線37を取り出す通路となるものであり、図10の点線矢印に示す経路で配線37が電気品箱30外へ取り出されるようになっている。 FIG. 8 is a front view of the indoor unit of the heat pump device according to Embodiment 1 of the present invention. FIG. 9 is a schematic sectional view taken along the line ZZ in FIG. FIG. 10 is an enlarged view of a portion surrounded by a dotted line in FIG.
The
ここで、配線37を電気品箱30外へ取り出す方法としては、以下の方法も考えられる。例えば、電気品箱30の底面35の前後方向の長さを、電気品箱30を構成する他の側面と同じ長さとし、底面35と前面パネル26との間に開口部Sを設けず完全に塞ぐ。そして、その上で、底面35に複数の穴を開け、各穴から各配線37を取り出す方法もある。
Here, as a method of taking the wiring 37 out of the electrical component box 30, the following method is also conceivable. For example, the length in the front-rear direction of the bottom surface 35 of the electrical component box 30 is set to the same length as the other side surfaces constituting the electrical component box 30, and the opening S is not provided between the bottom surface 35 and the front panel 26. Block it. Then, there is a method of making a plurality of holes in the bottom surface 35 and taking out each wiring 37 from each hole.
しかし、この方法では底面35に設けた穴のエッジによって配線被覆が傷付くことを防止するため、各穴のそれぞれに対し、以下の対応が必要となる。すなわち、穴のエッジ部分にゴムブッシュなどの追加部品を取り付けたり、穴のエッジ部にヘミングなどの丸め処理を行ったりといった対応が必要となる。このため、上述のように、底面35を、その前端面35aが電気品箱30の他の側面の前端面よりも後方に位置する構成とし、複数の配線37をまとめて取り出せる開口部Sを形成する方が、加工の手間やコスト面で有利となる。なお、開口部Sを構成する方法を用いた場合であっても、配線37が接触する部分には、配線37の被覆を傷つけないようヘミングなどの丸め加工を行っておく必要があるが、その加工の手間は各穴に対して行うよりも簡単である。
However, in this method, in order to prevent the wiring cover from being damaged by the edge of the hole provided in the bottom surface 35, the following measures are required for each of the holes. That is, it is necessary to attach an additional part such as a rubber bush to the edge portion of the hole or to perform a rounding process such as hemming on the edge portion of the hole. Therefore, as described above, the bottom surface 35 is configured such that the front end surface 35a is positioned behind the front end surface of the other side surface of the electrical component box 30, and the opening S through which the plurality of wirings 37 can be taken out is formed. This is advantageous in terms of processing effort and cost. Even when the method of forming the opening S is used, it is necessary to perform rounding processing such as hemming so as not to damage the coating of the wiring 37 in the portion where the wiring 37 contacts, The processing effort is simpler than for each hole.
また、電気品箱30の下方にあるドレインパン25aおよび底面パネル25のそれぞれには、図10に示すように配線37を本体20外へ取り出すための穴25b、25cが設けられている。そして、底面パネル25の穴25cのエッジ部分にゴムブッシュ25dが配置されている。そして、電気品箱30から取り出された配線は、この穴25b、25cから本体20外へと導かれる。
Moreover, holes 25b and 25c for taking out the wiring 37 out of the main body 20 are provided in each of the drain pan 25a and the bottom panel 25 below the electrical component box 30 as shown in FIG. A rubber bush 25d is disposed at the edge portion of the hole 25c of the bottom panel 25. Then, the wiring taken out from the electrical component box 30 is guided out of the main body 20 through the holes 25b and 25c.
このように電気品箱30の下側から配線37を取り出すことで、配線長さに無駄が無いためコスト低減が可能である。また、配線37を遠回りさせずに済むため、配線固定個所も減らすことができ、作業性も良くなる。
Thus, by removing the wiring 37 from the lower side of the electrical component box 30, the wiring length is not wasted, so that the cost can be reduced. Further, since it is not necessary to make the wiring 37 go around, the number of wiring fixing points can be reduced, and the workability is improved.
以上のように配線37を電気品箱30の下側から取り出すにあたり、開口部Sを用いる場合、底面35に複数の穴を用いる場合に比べて上述のような利点がある一方、以下の対策が必要となる。すなわち、電気品箱30内部で火災が発生し、その熱で電気部品28などが溶けて設置位置から落下した場合に、開口部Sが溶融落下物の本体20への通り道となる。このため、溶融落下物が本体20へ落下しない構成が必要となる。
As described above, when the wiring 37 is taken out from the lower side of the electrical component box 30, the use of the opening S has the advantages as described above as compared with the case of using a plurality of holes in the bottom surface 35. Necessary. That is, when a fire occurs inside the electrical component box 30 and the electrical components 28 are melted by the heat and fall from the installation position, the opening S becomes a passage to the main body 20 of the molten fallen object. For this reason, the structure in which a molten fall thing does not fall to the main body 20 is required.
この点を踏まえ、この実施の形態1の特徴とする構成としては、電気品箱30の下方に、板金で作られた落下防止板40を配置したことにある。落下防止板40は、開口部Sからの配線37の取り出し経路を塞がないように、図10に示すように電気品箱30から下方に離れた位置に配置され、開口部Sを下側から覆っている。なお、落下防止板40の材質は、溶融落下物を受け止める機能を果たすのであれば板金でなくてもよく、不燃材料であればよい。以下、この落下防止板40の構成についてさらに説明する。
Considering this point, the characteristic feature of the first embodiment is that a fall prevention plate 40 made of sheet metal is disposed below the electrical component box 30. The fall prevention plate 40 is disposed at a position spaced downward from the electrical component box 30 as shown in FIG. 10 so as not to block the extraction path of the wiring 37 from the opening S, and the opening S is formed from the lower side. Covering. In addition, the material of the fall prevention plate 40 may not be a sheet metal as long as it fulfills the function of receiving the molten fallen material, and may be any non-combustible material. Hereinafter, the configuration of the fall prevention plate 40 will be further described.
図11は、この発明の実施の形態1に係る冷凍サイクル装置の室内機における落下防止板の斜視図である。図12は、この発明の実施の形態1に係る冷凍サイクル装置の室内機における落下防止板を示す図で、(a)は平面図、(b)は側面図である。図13は、図12(b)の拡大図である。
落下防止板40は、左右方向に延びてその両端部に爪41aが形成された垂直面41と、垂直面41の下端から後方に向けて延び、溶融落下物を受け止める受け面42とを有し、側面視でL字形状に形成されている。受け面42は平面板状に構成されている。落下防止板40は、垂直面41の両端部に形成された各爪41aを、各爪41aと対応して本体20に設けられた角穴22b、23b(図7参照)に差し込むことで、本体20に仮固定される。そして、仮固定を行ったのち、同じく落下防止板40の垂直面41の両端部に設けられた貫通穴41bにネジ(図示せず)を通し、本体20に設けたネジ穴(図示せず)締め込むことで、落下防止板40が本体20の右面パネル22と左面パネル23へ本固定されるようになっている。 FIG. 11 is a perspective view of a fall prevention plate in the indoor unit of the refrigeration cycle apparatus according to Embodiment 1 of the present invention. 12A and 12B are diagrams showing a fall prevention plate in the indoor unit of the refrigeration cycle apparatus according to Embodiment 1 of the present invention, where FIG. 12A is a plan view and FIG. 12B is a side view. FIG. 13 is an enlarged view of FIG.
Thefall prevention plate 40 has a vertical surface 41 extending in the left-right direction and having claws 41a formed at both ends thereof, and a receiving surface 42 extending rearward from the lower end of the vertical surface 41 and receiving a molten fallen object. It is formed in an L shape in side view. The receiving surface 42 is configured as a flat plate. The fall prevention plate 40 is formed by inserting the claws 41a formed at both ends of the vertical surface 41 into the square holes 22b and 23b (see FIG. 7) provided in the main body 20 corresponding to the claws 41a. 20 is temporarily fixed. Then, after temporarily fixing, screws (not shown) are passed through through holes 41b provided at both ends of the vertical surface 41 of the fall prevention plate 40, and screw holes (not shown) provided in the main body 20 are passed. The fall prevention plate 40 is permanently fixed to the right panel 22 and the left panel 23 of the main body 20 by tightening.
落下防止板40は、左右方向に延びてその両端部に爪41aが形成された垂直面41と、垂直面41の下端から後方に向けて延び、溶融落下物を受け止める受け面42とを有し、側面視でL字形状に形成されている。受け面42は平面板状に構成されている。落下防止板40は、垂直面41の両端部に形成された各爪41aを、各爪41aと対応して本体20に設けられた角穴22b、23b(図7参照)に差し込むことで、本体20に仮固定される。そして、仮固定を行ったのち、同じく落下防止板40の垂直面41の両端部に設けられた貫通穴41bにネジ(図示せず)を通し、本体20に設けたネジ穴(図示せず)締め込むことで、落下防止板40が本体20の右面パネル22と左面パネル23へ本固定されるようになっている。 FIG. 11 is a perspective view of a fall prevention plate in the indoor unit of the refrigeration cycle apparatus according to Embodiment 1 of the present invention. 12A and 12B are diagrams showing a fall prevention plate in the indoor unit of the refrigeration cycle apparatus according to Embodiment 1 of the present invention, where FIG. 12A is a plan view and FIG. 12B is a side view. FIG. 13 is an enlarged view of FIG.
The
落下防止板40の形状は、図11~図13に示した形状に限られず、次の図14に示す構成としてもよい。以下、落下防止板40の形状のバリエーションを図14を参照して説明する。
The shape of the fall prevention plate 40 is not limited to the shape shown in FIGS. 11 to 13 and may be configured as shown in FIG. Hereinafter, variations in the shape of the fall prevention plate 40 will be described with reference to FIG.
図14は、この発明の実施の形態1に係る冷凍サイクル装置の室内機の落下防止板の他のバリエーションを示す図である。図14(a)は平面図、図14(b)~(e)は図14(a)のY-Y断面図である。
上記図11~図13に示した落下防止板40は、垂直面41と受け面42とのなす角θが90゜のL字形状で、受け面42が水平方向に延びる水平面であった。これに対し、(b)は、θが鋭角であり、受け面42が後方に向かうに連れて上昇する傾斜面としたものである。この形状とすることで、溶融落下物が受け面42を超えて本体20へ落下するのを受け面42の傾斜によって強く防止できる。この形状は、本体20が傾いて設置される可能性がある場合などに有効である。 FIG. 14 is a diagram showing another variation of the fall prevention plate for the indoor unit of the refrigeration cycle apparatus according to Embodiment 1 of the present invention. 14 (a) is a plan view, and FIGS. 14 (b) to 14 (e) are YY cross-sectional views of FIG. 14 (a).
Thefall prevention plate 40 shown in FIGS. 11 to 13 has an L shape with an angle θ of 90 ° between the vertical surface 41 and the receiving surface 42, and the receiving surface 42 is a horizontal plane extending in the horizontal direction. On the other hand, (b) is an inclined surface in which θ is an acute angle and the receiving surface 42 rises toward the rear. By adopting this shape, it is possible to strongly prevent the molten fallen object from falling over the receiving surface 42 to the main body 20 by the inclination of the receiving surface 42. This shape is effective when there is a possibility that the main body 20 is installed with an inclination.
上記図11~図13に示した落下防止板40は、垂直面41と受け面42とのなす角θが90゜のL字形状で、受け面42が水平方向に延びる水平面であった。これに対し、(b)は、θが鋭角であり、受け面42が後方に向かうに連れて上昇する傾斜面としたものである。この形状とすることで、溶融落下物が受け面42を超えて本体20へ落下するのを受け面42の傾斜によって強く防止できる。この形状は、本体20が傾いて設置される可能性がある場合などに有効である。 FIG. 14 is a diagram showing another variation of the fall prevention plate for the indoor unit of the refrigeration cycle apparatus according to Embodiment 1 of the present invention. 14 (a) is a plan view, and FIGS. 14 (b) to 14 (e) are YY cross-sectional views of FIG. 14 (a).
The
(c)は、(a)における受け面42の後方端部を上方に向けて折り曲げた形状となっている。言い換えれば、受け面42は、後方側端部に、上方に向けて立設する立設面43を有する形状となっている。この形状は、溶融落下物が大きい場合、および溶融落下物が転がる可能性がある場合などでも本体20への落下を防止できる形状となっている。
(C) has a shape in which the rear end of the receiving surface 42 in (a) is bent upward. In other words, the receiving surface 42 has a shape having a standing surface 43 that is erected upward at the rear end portion. This shape is a shape that can prevent dropping to the main body 20 even when the molten fallen object is large and when the molten fallen object may roll.
(d)および(e)は、受け面42を下方に凸の形状としており、凸形状として、(d)はR形状、(e)は受け面42の前後方向の中央部が最下点となる曲げ角度θの角部を有する形状としている。これらの形状は、溶融落下物が、受け面42のなかでも垂直面41から離れた位置に溜まることを狙った形状である。これらの形状とすることで、受け面42に落下した溶融落下物は受け面42の最下部に重力により移動し、前面パネル26から距離を置いた場所にとどまる。このため、前面パネル26への熱の影響を少なくすることができる。なお、図14(d)および図14(e)では、受け面42の最下部が受け面42の前後方向の中央部となっているが、この位置に限られず、例えばさらに後方側の位置としてもよい。また、(d)および(e)において、上記(c)の立設面43を設けた例を示しているが、立設面43を設けない構成としてもよい。
In (d) and (e), the receiving surface 42 has a convex downward shape. As the convex shape, (d) is an R shape, and (e) is the center in the front-rear direction of the receiving surface 42 as the lowest point. The shape has a corner portion with a bending angle θ. These shapes are intended to collect the molten fallen object at a position away from the vertical surface 41 in the receiving surface 42. By adopting these shapes, the molten fallen material that has fallen on the receiving surface 42 moves to the lowermost portion of the receiving surface 42 due to gravity, and remains at a position away from the front panel 26. For this reason, the influence of heat on the front panel 26 can be reduced. In FIG. 14D and FIG. 14E, the lowermost portion of the receiving surface 42 is the central portion in the front-rear direction of the receiving surface 42. However, the position is not limited to this position. Also good. Moreover, although the example which provided the standing surface 43 of said (c) is shown in (d) and (e), it is good also as a structure which does not provide the standing surface 43. FIG.
落下防止板40は、電気品箱30の下方であって、かつ落下防止板40の受け面42が平面的に見て開口部Sと重なり、さらに受け面42が電気品箱30の底面35と平面的に見てオーバラップするように構成されている。つまり、受け面42の前後方向の長さは、開口部Sの前後方向の長さに、オーバラップ分を加えた長さとなっている。また、受け面42の左右方向の長さは、開口部Sの左右方向の長さと同じであればよい。なお、垂直面41は、爪41aおよびネジ穴などの固定部位を設けられるだけの高さがあればよい。
The fall prevention plate 40 is below the electrical component box 30, and the receiving surface 42 of the fall prevention plate 40 overlaps with the opening S when seen in a plan view, and the receiving surface 42 and the bottom surface 35 of the electrical component box 30. It is configured to overlap in a plan view. That is, the length in the front-rear direction of the receiving surface 42 is a length obtained by adding the overlap to the length in the front-rear direction of the opening S. Further, the length of the receiving surface 42 in the left-right direction may be the same as the length of the opening S in the left-right direction. The vertical surface 41 only needs to be high enough to be provided with fixing portions such as the claw 41a and screw holes.
落下防止板40を以上のように配置、構成したことにより、開口部Sを介して落下した溶融落下物が受け面42で受け止められる。これにより、溶融落下物が開口部Sを介して本体20の底面パネル25に落下し、本体20内の他部品へ延焼が生じる不都合を防止できる。
By arranging and configuring the fall prevention plate 40 as described above, the molten fallen material that has fallen through the opening S is received by the receiving surface 42. Accordingly, it is possible to prevent the inconvenience that the molten fallen material falls onto the bottom panel 25 of the main body 20 through the opening S and spreads to other components in the main body 20.
次に、電気部品28の端子接続部および配線37に無理な応力がかかることなく電気品箱30から配線37を取り出すことが可能な、電気品箱30と落下防止板40との寸法設定について説明する。
Next, the dimension setting of the electrical component box 30 and the fall prevention plate 40 that allows the wiring 37 to be taken out from the electrical component box 30 without applying excessive stress to the terminal connection portion of the electrical component 28 and the wiring 37 will be described. To do.
図15は、この発明の実施の形態1に係るヒートポンプ装置の電気品箱と落下防止板との寸法設定の説明図である。
電気品箱30の底面35の前端面35aおよび落下防止板40の受け面42の後端面42aは、図15に示すように配線37の取り出し経路に位置している。このため、電気品箱30の底面35の前端面35aの前後方向の位置および落下防止板40の受け面42の後端面42aの前後方向の位置によって配線37の取り出す際の配線37の曲がり具合が変わってくる。言い換えれば、電気品箱30の底面35および落下防止板40の受け面42のそれぞれの奥行き方向の長さによって、配線37の取り出す際の配線37の曲がり具合が変わってくる。なお、配線37の取り出し経路上に位置する、電気品箱30の底面35の前端面35aと落下防止板40の受け面42の後端面42aとについては、配線37の被覆を傷つけないよう、ヘミングなどの丸め加工を行っておくことが好ましい。 FIG. 15 is an explanatory diagram for setting the dimensions of the electrical component box and the fall prevention plate of the heat pump apparatus according to Embodiment 1 of the present invention.
Thefront end surface 35a of the bottom surface 35 of the electrical component box 30 and the rear end surface 42a of the receiving surface 42 of the fall prevention plate 40 are located in the wiring 37 extraction path as shown in FIG. For this reason, the bending state of the wiring 37 when the wiring 37 is taken out depends on the position of the front end surface 35a of the bottom surface 35 of the electrical component box 30 in the front-rear direction and the position of the rear end surface 42a of the receiving surface 42 of the fall prevention plate 40. It will change. In other words, the bending state of the wiring 37 when the wiring 37 is taken out changes depending on the lengths of the bottom surface 35 of the electrical component box 30 and the receiving surface 42 of the fall prevention plate 40 in the depth direction. It should be noted that the front end surface 35a of the bottom surface 35 of the electrical component box 30 and the rear end surface 42a of the receiving surface 42 of the fall prevention plate 40 that are located on the wiring 37 take-out path are hemmed so as not to damage the coating of the wiring 37. It is preferable to perform rounding such as.
電気品箱30の底面35の前端面35aおよび落下防止板40の受け面42の後端面42aは、図15に示すように配線37の取り出し経路に位置している。このため、電気品箱30の底面35の前端面35aの前後方向の位置および落下防止板40の受け面42の後端面42aの前後方向の位置によって配線37の取り出す際の配線37の曲がり具合が変わってくる。言い換えれば、電気品箱30の底面35および落下防止板40の受け面42のそれぞれの奥行き方向の長さによって、配線37の取り出す際の配線37の曲がり具合が変わってくる。なお、配線37の取り出し経路上に位置する、電気品箱30の底面35の前端面35aと落下防止板40の受け面42の後端面42aとについては、配線37の被覆を傷つけないよう、ヘミングなどの丸め加工を行っておくことが好ましい。 FIG. 15 is an explanatory diagram for setting the dimensions of the electrical component box and the fall prevention plate of the heat pump apparatus according to Embodiment 1 of the present invention.
The
ところで、開口部Sの奥行き長さL1が短いほど、溶融落下物の落下範囲を狭めることができる。また、電気品箱30の背面34の前後方向の位置は変わらないという条件では、L1が短いほど底面35の奥行き長さL2が長くなり、電気品箱30のフランジ部36の前面が前面パネル26に近づくことになる。そして、電気品箱30のフランジ部36の前面が前面パネル26に近づきすぎると、フランジ部36の前面に取り付けられるケーブルストラップ28e(図5参照)が前面パネル26に接触してしまう。このため、この接触が生じず、ケーブルストラップ28eと前面パネル26との間に十分なクリアランスを持つ範囲で、可能な限りフランジ部36の前面が前面パネル26に近くなるようにL1を設定する方が良い。
Incidentally, as the depth length L 1 of the opening S is short, it is possible to narrow the fall range of melt falling objects. On the condition that the position of the back surface 34 of the electrical component box 30 in the front-rear direction does not change, the depth length L 2 of the bottom surface 35 becomes longer as L 1 is shorter, and the front surface of the flange portion 36 of the electrical component box 30 is the front surface. The panel 26 will be approached. When the front surface of the flange portion 36 of the electrical component box 30 is too close to the front panel 26, the cable strap 28e (see FIG. 5) attached to the front surface of the flange portion 36 comes into contact with the front panel 26. Therefore, this contact does not occur, in range with a sufficient clearance between the cable strap 28e and the front panel 26, the front face of the flange portion 36 as possible to set the L 1 to be close to the front panel 26 Better.
しかしながらL1を短くすると、その分、L2が長くなることから、配線37の硬さによっては電気部品28の端子接続部に無理な応力が加わることがある。すなわち、電気部品28の端子接続部に接続された配線37は、その接続位置から前方に引き出され、電気品箱30の底面35の前端面35aを超える必要がある。このため、L2と電気部品28の高さL3との関係がL2>L3で、かつ距離H1が短めであると、配線37を端子接続部から急角度で前方に曲げる必要が生じ、電気部品28の端子接続部に無理な応力が加わることになる。なお、距離H1は、電気品箱30内において最も下方に配置された電気部品28の端子接続部と電気品箱30の底面35との上下方向の距離である。
However, if a shorter L 1, that amount, since L 2 is long, sometimes excessive stress is applied to the terminal connecting portion of the electrical component 28 by the hardness of the wire 37. That is, the wiring 37 connected to the terminal connection portion of the electrical component 28 needs to be drawn forward from the connection position and exceed the front end surface 35 a of the bottom surface 35 of the electrical component box 30. Thus, L 2 and height L 3 relationship between the L 2> L 3 of electrical component 28, and the distance H 1 is short, the need to bend at an acute angle to the front wires 37 from the terminal connecting portion As a result, excessive stress is applied to the terminal connection portion of the electrical component 28. The distance H 1 is the vertical distance between the terminal connection portion of the electrical component 28 arranged at the lowest position in the electrical component box 30 and the bottom surface 35 of the electrical component box 30.
よって、距離H1を長くとることができない場合は、端子接続部に上述のような無理な応力が加わることを避けるためにL2≦L3とするとよい。L2≦L3とすれば、配線37を端子接続部から前方に曲げることなく、端子接続部からそのまま下方に取り出すことができるため、端子接続部に無理な応力が加わることを避けることができる。
Therefore, if the distance H 1 can not take longer may When L 2 ≦ L 3 in order to avoid excessive stress as described above to the terminal connecting portion is applied. If L 2 ≦ L 3 , the wiring 37 can be taken out from the terminal connection portion as it is without bending forward from the terminal connection portion, so that it is possible to avoid applying excessive stress to the terminal connection portion. .
そして、L2≦L3とした場合に、落下防止板40の奥行き長さL4の値を調節して、電気品箱30の底面35と落下防止板40の受け面42とのオーバラップ長さL5を確保することで、溶融落下防止の機能を維持できる。
When L 2 ≦ L 3 , the value of the depth length L 4 of the fall prevention plate 40 is adjusted to overlap the bottom surface 35 of the electrical component box 30 and the receiving surface 42 of the fall prevention plate 40. by secured to L 5, it can maintain the function of preventing the molten drop.
次に、配線37の許容最低曲げ半径に応じたオーバラップ長さL5と距離H2との寸法設定について説明する。H2は、電気品箱30の下端と落下防止板40の受け面42との上下方向の距離である。配線37は、その硬さに応じて許容最低曲げ半径を有し、許容最低曲げ半径よりも小さい曲げ半径で曲げられると、配線37に無理な応力が加わる。このため、開口部Sを通して落下防止板40の後方へと取り出される間の配線37の曲げ半径が、許容最低曲げ半径よりも小さい曲げ半径とならないように、L5とH2とを設定することが求められる。以下、許容最低曲げ半径に応じたL5とH2との設定について説明する。
Next, a description will be given dimensioning of the overlapping length L 5 and a distance H 2 corresponding to the minimum permissible bending radius of the wire 37. H 2 is the vertical distance between the lower end of the electrical component box 30 and the receiving surface 42 of the fall prevention plate 40. The wiring 37 has an allowable minimum bending radius according to its hardness, and if it is bent with a bending radius smaller than the allowable minimum bending radius, an excessive stress is applied to the wiring 37. Therefore, the bending radius of the wire 37 between withdrawn to the rear of the drop preventing plate 40 through the opening portion S, so as not to smaller bending radius than the allowable minimum bend radius, setting the L 5 and H 2 Is required. The following describes settings of L 5 and H 2 corresponding to the minimum permissible bending radius.
図16は、この発明の実施の形態1に係るヒートポンプ装置において、L5≦H2の場合の、電気品箱の下端から落下防止板の後方に至る配線の曲げ半径の説明図である。図18は、この発明の実施の形態1に係るヒートポンプ装置において、L5>H2の場合の、電気品箱の下端から落下防止板の後方に至る配線の曲げ半径の説明図である。なお、配線37は、電気品箱30の下端から落下防止板40に至る範囲外では、鉛直方向に延び、左右に傾いていないものとする。この条件において、電気品箱30の下端から落下防止板40の後方に至る配線37の曲げ半径RBはL5とH2との関係性によって以下のように決まる。
FIG. 16 is an explanatory diagram of the bending radius of the wiring from the lower end of the electrical component box to the rear of the fall prevention plate in the case of L 5 ≦ H 2 in the heat pump device according to Embodiment 1 of the present invention. FIG. 18 is an explanatory diagram of the bending radius of the wiring from the lower end of the electrical component box to the rear of the fall prevention plate in the heat pump device according to Embodiment 1 of the present invention when L 5 > H 2 . It is assumed that the wiring 37 extends in the vertical direction and is not tilted left and right outside the range from the lower end of the electrical component box 30 to the fall prevention plate 40. In this condition, the bending radius R B of the wiring 37 extending from the lower end of the electrical component box 30 to the rear of the drop preventing plate 40 is determined as follows by the relationship between L 5 and H 2.
(L5≦H2の場合)
L5≦H2の場合、図16に示すように、電気品箱30の下端から落下防止板40の後方に至る配線37の形状は、互いに相対する曲がり方向を持った2つの円弧60、61を、L5とH2とのそれぞれの中央の点50で繋げた形状に近似できる。円弧60は、電気品箱30の下端上の点51と点50とを通る円弧で、且つ、点51における接線が垂直となる円弧である。また、円弧61は、点50と、落下防止板40の受け面42の後端上の点52とを通る円弧で、且つ、点52における接線が垂直となる円弧である。よって、配線37の曲げ半径RBは、三平方の定理より以下のようにして求められる。 (When L 5 ≦ H 2 )
In the case of L 5 ≦ H 2 , as shown in FIG. 16, the shape of thewiring 37 extending from the lower end of the electrical component box 30 to the rear of the fall prevention plate 40 is two arcs 60 and 61 having bending directions opposite to each other. Can be approximated to the shape connected by the central point 50 of L 5 and H 2 . The arc 60 is an arc passing through the point 51 and the point 50 on the lower end of the electrical component box 30 and the arc tangent at the point 51 is vertical. Further, the arc 61 is an arc passing through the point 50 and a point 52 on the rear end of the receiving surface 42 of the fall prevention plate 40 and a tangent at the point 52 is vertical. Therefore, the bending radius R B of the wiring 37 is determined as follows from the Pythagorean theorem.
L5≦H2の場合、図16に示すように、電気品箱30の下端から落下防止板40の後方に至る配線37の形状は、互いに相対する曲がり方向を持った2つの円弧60、61を、L5とH2とのそれぞれの中央の点50で繋げた形状に近似できる。円弧60は、電気品箱30の下端上の点51と点50とを通る円弧で、且つ、点51における接線が垂直となる円弧である。また、円弧61は、点50と、落下防止板40の受け面42の後端上の点52とを通る円弧で、且つ、点52における接線が垂直となる円弧である。よって、配線37の曲げ半径RBは、三平方の定理より以下のようにして求められる。 (When L 5 ≦ H 2 )
In the case of L 5 ≦ H 2 , as shown in FIG. 16, the shape of the
図17は、この発明の実施の形態1に係るヒートポンプ装置における配線の曲げ半径RBの説明図である。
円弧60の両端部の点50および点51から円弧60の中心点Oへ線分を引く。さらに点50から点51と点Oとを結ぶ線分へ垂線を引き、交点をPとおく。すると点50と点Oと点Pとで囲まれた三角形ができる。点50と点Oを結ぶ線分の長さはRB、点50と点Pを結ぶ線分の長さはH2/2、点Oと点Pとを結ぶ線分の長さはRB-L5/2となる。このため、三平方の定理より、以下の(1)式が成り立つ。 Figure 17 is an explanatory view of a bending radius R B of the wiring in a heat pump apparatus according to the first embodiment of the present invention.
A line segment is drawn from the points 50 and 51 at both ends of the arc 60 to the center point O of the arc 60. Further, a perpendicular line is drawn from the point 50 to the line segment connecting the point 51 and the point O, and the intersection point is set as P. Then, a triangle surrounded by the point 50, the point O, and the point P is formed. Point 50 is the length of a line connecting the point O R B, the length of a line connecting the points 50 and P H 2/2, the length of a line connecting the point O and the point P is R B the -L 5/2. For this reason, the following equation (1) holds from the three-square theorem.
円弧60の両端部の点50および点51から円弧60の中心点Oへ線分を引く。さらに点50から点51と点Oとを結ぶ線分へ垂線を引き、交点をPとおく。すると点50と点Oと点Pとで囲まれた三角形ができる。点50と点Oを結ぶ線分の長さはRB、点50と点Pを結ぶ線分の長さはH2/2、点Oと点Pとを結ぶ線分の長さはRB-L5/2となる。このため、三平方の定理より、以下の(1)式が成り立つ。 Figure 17 is an explanatory view of a bending radius R B of the wiring in a heat pump apparatus according to the first embodiment of the present invention.
A line segment is drawn from the
そして、(1)式をRBで求めると、次の(2)式となる。
Then, the equation (1) when determined at R B, the following equation (2).
よって、上記(2)式のRBに、配線37の許容最小曲げ半径RMINを代入して得た、次の(3)式を満足するように、L5とH2とを設定すればよい。
Accordingly, the R B in the formula (2), obtained by substituting the allowable minimum bend radius R MIN of the wiring 37, so as to satisfy the following equation (3), by setting the L 5 and H 2 Good.
なお、上記(2)式はL5≦H2の場合であるので、当然、L5≦H2の関係を満たしつつ、L5とH2とを設定することになる。(3)式の関係を満足するようにL5とH2とを設定することで、配線37に無理な応力が加わらない設計とすることができる。
Since the above equation (2) is for L 5 ≦ H 2 , naturally, L 5 and H 2 are set while satisfying the relationship of L 5 ≦ H 2 . By setting L 5 and H 2 so as to satisfy the relationship of the expression (3), a design in which excessive stress is not applied to the wiring 37 can be achieved.
(L5>H2の場合)
L5>H2の場合、図18に示すように、配線37の形状は、L5とH2とのそれぞれの中央の点50を含む水平な線分の両端に互いに相対する方向へ曲がった円弧60、61を繋げた形状に近似できる。そのため配線37の曲げ半径RBは、以下の(4)式となる。 (When L 5 > H 2 )
When L 5 > H 2 , as shown in FIG. 18, the shape of thewiring 37 is bent in opposite directions at both ends of a horizontal line segment including the central point 50 of each of L 5 and H 2 . It can be approximated to a shape in which the arcs 60 and 61 are connected. Therefore bending radius R B of the wiring 37 becomes the following equation (4).
L5>H2の場合、図18に示すように、配線37の形状は、L5とH2とのそれぞれの中央の点50を含む水平な線分の両端に互いに相対する方向へ曲がった円弧60、61を繋げた形状に近似できる。そのため配線37の曲げ半径RBは、以下の(4)式となる。 (When L 5 > H 2 )
When L 5 > H 2 , as shown in FIG. 18, the shape of the
よって、上記(4)式のRBに、配線37の許容最小曲げ半径RMINを代入して得た、次の(5)式を満足するように、H2を設定すればよい。
Therefore, the R B in the formula (4), obtained by substituting the allowable minimum bend radius R MIN of the wiring 37, so as to satisfy the following equation (5) may be set to H 2.
なお、上記(4)式はL5>H2の場合であるので、当然、L5>H2の関係を満たしつつ、L5とH2とを設定することになる。(5)式の関係を満足するようにL5とH2とを設定することで、配線37に無理な応力が加わらない設計とすることができる。
Since equation (4) is a case of L 5> H 2, of course, while satisfying the relationship L 5> H 2, will set the L 5 and H 2. By setting L 5 and H 2 so as to satisfy the relationship of the expression (5), the wiring 37 can be designed so that excessive stress is not applied.
以上のように構成された電気品箱30では、電気品箱30の底面35側から開口部Sを介して配線37を電気品箱30外へ取り出すことが可能である。そして、万一、電気品箱30の内部で発火が生じ、電気部品28が溶融して落下した場合、電気品箱30の底面35上に落下するか、または、電気品箱30の開口部Sからさらに落下する。電気部品28が電気品箱30の開口部Sからさらに落下したとしても、開口部Sの下方に落下防止板40が設置されているので、落下した電気部品28を落下防止板40の受け面42で受け止めることができる。このため、本体20内の他部品への延焼を防止することができる。
In the electrical component box 30 configured as described above, the wiring 37 can be taken out from the electrical component box 30 through the opening S from the bottom surface 35 side of the electrical component box 30. In the unlikely event that ignition occurs inside the electrical component box 30 and the electrical component 28 melts and falls, it falls on the bottom surface 35 of the electrical component box 30 or the opening S of the electrical component box 30. Fall further from. Even if the electrical component 28 further falls from the opening S of the electrical component box 30, since the fall prevention plate 40 is installed below the opening S, the dropped electrical component 28 is received by the receiving surface 42 of the fall prevention plate 40. You can catch it. For this reason, it is possible to prevent fire spread to other components in the main body 20.
ここで、落下防止板40の受け面42の形状は、上述したように様々なバリエーションで形成できる。
Here, the shape of the receiving surface 42 of the fall prevention plate 40 can be formed in various variations as described above.
なお、この実施の形態1では、電気品箱30および落下防止板40が備えられる「本体」として、室内機100の本体を例に説明したが、室外機200の本体であってもよい。
In the first embodiment, the main body of the indoor unit 100 has been described as an example of the “main body” provided with the electrical component box 30 and the fall prevention plate 40. However, the main body of the outdoor unit 200 may be used.
1 熱交換器、2 ポンプ、3 流量センサ、4 ストレーナ、5 バルブ、6 バルブ、7 空気逃がし弁、8 圧力逃がし弁、9 圧力計、10 冷媒入ジョイント、11 冷媒出ジョイント、12 水入ジョイント、13 水出ジョイント、14 熱交換器、15 圧縮機、16 減圧装置、17 タンク、18 三方弁、19 圧力逃がし弁、20 本体、21 上面パネル、22 右面パネル、22a 角穴、22b 角穴、23 左面パネル、23a 角穴、23b 角穴、24 背面パネル、25 底面パネル、25a ドレインパン、25b 穴、25c 穴、25d ゴムブッシュ、26 前面パネル、27 操作盤、28 電気部品、28a ブレーカ、28b コンダクタ、28c 端子台、28d 回路基板、28e ケーブルストラップ、30 電気品箱、31 上面、32 右側面、32a フランジ、32aa 爪、33 左側面、33a フランジ、33aa 爪、34 背面、35 底面、35a 前端面、36 フランジ部、37 配線、40 落下防止板、41 垂直面、41a 爪、41b 貫通穴、42 受け面、42a 後端面、43 立設面、60 円弧、61 円弧、100 室内機、101 制御回路、200 室外機、300 客先選択部品、A 冷媒回路、B 水回路、S 開口部。
1 heat exchanger, 2 pump, 3 flow sensor, 4 strainer, 5 valve, 6 valve, 7 air relief valve, 8 pressure relief valve, 9 pressure gauge, 10 refrigerant inlet joint, 11 refrigerant outlet joint, 12 water joint, 13 water discharge joint, 14 heat exchanger, 15 compressor, 16 pressure reducing device, 17 tank, 18 three-way valve, 19 pressure relief valve, 20 body, 21 top panel, 22 right panel, 22a square hole, 22b square hole, 23 Left panel, 23a square hole, 23b square hole, 24 rear panel, 25 bottom panel, 25a drain pan, 25b hole, 25c hole, 25d rubber bush, 26 front panel, 27 operation panel, 28 electrical components, 28a breaker, 28b conductor , 28c terminal block, 28d circuit board, 2 e Cable strap, 30 electrical box, 31 top surface, 32 right side, 32a flange, 32aa claw, 33 left side, 33a flange, 33aa claw, 34 back, 35 bottom, 35a front end, 36 flange, 37 wiring, 40 Drop prevention plate, 41 vertical surface, 41a claw, 41b through hole, 42 receiving surface, 42a rear end surface, 43 standing surface, 60 arc, 61 arc, 100 indoor unit, 101 control circuit, 200 outdoor unit, 300 customer selection Parts, A refrigerant circuit, B water circuit, S opening.
Claims (11)
- 本体と、
前記本体内に配置され、内部に電気部品を収納する、前面が開口した箱状の電気品箱とを備え、
前記本体は、前記電気品箱の前記前面の開口を覆う前面パネルを有し、
前記電気品箱の底面の前端面は、前記電気品箱の他の側面の前端面よりも後方に位置し、前記電気品箱の底面の前端面と前記前面パネルとの間に、前記電気部品に接続された配線を前記電気品箱の外に取り出す通路となる開口部が形成されており、
前記電気品箱の下方に、前記電気品箱から離れた位置で前記開口部を覆う受け面を備えた落下防止板が配置されているヒートポンプ装置。 The body,
A box-shaped electrical component box that is disposed in the main body and houses electrical components therein, and has an open front surface;
The main body has a front panel that covers the opening on the front surface of the electrical component box,
The front end surface of the bottom surface of the electrical component box is located behind the front end surface of the other side surface of the electrical component box, and the electrical component is disposed between the front end surface of the bottom surface of the electrical component box and the front panel. An opening serving as a passage for taking out the wiring connected to the outside of the electrical component box is formed,
A heat pump device in which a fall prevention plate having a receiving surface that covers the opening at a position away from the electrical component box is disposed below the electrical component box. - 前記落下防止板の前記受け面は、平面的に見て前記電気品箱の前記底面とオーバラップしている請求項1記載のヒートポンプ装置。 The heat pump device according to claim 1, wherein the receiving surface of the fall prevention plate overlaps the bottom surface of the electrical component box in a plan view.
- 前記落下防止板の前記受け面が前記電気品箱の前記底面とオーバラップする部分の前後方向の長さLと、前記電気品箱の下端と前記落下防止板の前記受け面との上下方向の距離Hとが、L≦Hの関係を有する場合、前記配線の許容最小曲げ半径RMINを含む次式
- 前記落下防止板の前記受け面が前記電気品箱の底面とオーバラップする部分の前後方向の長さLと、前記電気品箱の下端と前記落下防止板の前記受け面との上下方向の距離Hとが、L>Hの関係を有する場合、前記配線の許容最小曲げ半径RMINを含む次式
- 前記落下防止板の前記受け面は、水平方向に延びる水平面で構成されている請求項1~請求項4のいずれか一項に記載のヒートポンプ装置。 The heat pump device according to any one of claims 1 to 4, wherein the receiving surface of the fall prevention plate is configured by a horizontal plane extending in a horizontal direction.
- 前記落下防止板の前記受け面は、後方に向かうに連れて上昇する傾斜面で構成されている請求項1~請求項4のいずれか一項に記載のヒートポンプ装置。 The heat pump device according to any one of claims 1 to 4, wherein the receiving surface of the fall prevention plate is configured with an inclined surface that rises toward the rear.
- 前記落下防止板の前記受け面は、下方に凸の凸形状となっている請求項1~請求項4のいずれか一項に記載のヒートポンプ装置。 The heat pump device according to any one of claims 1 to 4, wherein the receiving surface of the fall prevention plate has a convex shape protruding downward.
- 前記凸形状は、R形状である請求項7記載のヒートポンプ装置。 The heat pump device according to claim 7, wherein the convex shape is an R shape.
- 前記凸形状は、前後方向の途中で最下点となる角部を有する形状である請求項7記載のヒートポンプ装置。 The heat pump device according to claim 7, wherein the convex shape is a shape having a corner portion that is the lowest point in the middle of the front-rear direction.
- 前記受け面は、後方側端部に、上方に向けて立設する立設面を有する請求項1~請求項9のいずれか一項に記載のヒートポンプ装置。 The heat pump device according to any one of claims 1 to 9, wherein the receiving surface has an erected surface erected upward at a rear side end portion.
- 前記本体は、室内機の本体である請求項1~請求項10のいずれか一項に記載のヒートポンプ装置。 The heat pump device according to any one of claims 1 to 10, wherein the main body is a main body of an indoor unit.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2017/011014 WO2018167963A1 (en) | 2017-03-17 | 2017-03-17 | Heat pump device |
CN201790000488.5U CN208595733U (en) | 2017-03-17 | 2017-03-17 | Heat pump assembly |
JP2019505660A JP6707177B2 (en) | 2017-03-17 | 2017-03-17 | Heat pump device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2017/011014 WO2018167963A1 (en) | 2017-03-17 | 2017-03-17 | Heat pump device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018167963A1 true WO2018167963A1 (en) | 2018-09-20 |
Family
ID=63523480
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2017/011014 WO2018167963A1 (en) | 2017-03-17 | 2017-03-17 | Heat pump device |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP6707177B2 (en) |
CN (1) | CN208595733U (en) |
WO (1) | WO2018167963A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005172376A (en) * | 2003-12-12 | 2005-06-30 | Toshiba Kyaria Kk | Outdoor machine for air conditioner |
JP2010181095A (en) * | 2009-02-06 | 2010-08-19 | Corona Corp | Outdoor unit for air conditioner |
JP4923107B2 (en) * | 2007-09-28 | 2012-04-25 | 東芝キヤリア株式会社 | Air conditioner outdoor unit |
-
2017
- 2017-03-17 CN CN201790000488.5U patent/CN208595733U/en active Active
- 2017-03-17 JP JP2019505660A patent/JP6707177B2/en active Active
- 2017-03-17 WO PCT/JP2017/011014 patent/WO2018167963A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005172376A (en) * | 2003-12-12 | 2005-06-30 | Toshiba Kyaria Kk | Outdoor machine for air conditioner |
JP4923107B2 (en) * | 2007-09-28 | 2012-04-25 | 東芝キヤリア株式会社 | Air conditioner outdoor unit |
JP2010181095A (en) * | 2009-02-06 | 2010-08-19 | Corona Corp | Outdoor unit for air conditioner |
Also Published As
Publication number | Publication date |
---|---|
JPWO2018167963A1 (en) | 2019-11-07 |
CN208595733U (en) | 2019-03-12 |
JP6707177B2 (en) | 2020-06-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101595349B (en) | Outdoor unit for air conditioner | |
JP4063296B2 (en) | Shut-off valve support member and outdoor unit of air conditioner having the same | |
EP2325572B1 (en) | Air conditioner | |
EP3214383A1 (en) | Air conditioner | |
CN101087979B (en) | Outdoor machine of air conditioner | |
JP4807445B2 (en) | Outdoor unit | |
JP6169252B2 (en) | Air conditioner indoor unit | |
CN215372681U (en) | Wall-mounted air conditioner | |
WO2017208348A1 (en) | Air conditioner indoor unit | |
JP2007085681A (en) | Air conditioner | |
US10845066B2 (en) | Heat source unit of refrigerating apparatus | |
JP2007278559A (en) | Outdoor unit of air conditioner | |
WO2018167963A1 (en) | Heat pump device | |
WO2019239630A1 (en) | Outdoor unit | |
WO2016136529A1 (en) | Heat source unit for refrigeration device | |
JP6910051B2 (en) | Water heater | |
JP5674510B2 (en) | Heat source unit | |
JP2024514275A (en) | Wall-mounted air conditioner | |
JP2006153452A (en) | Ceiling embedded type air conditioner | |
JPWO2019003338A1 (en) | Air conditioner outdoor unit | |
JP5984001B2 (en) | Substrate fixing structure and heat source device | |
JP2021055853A (en) | Outdoor unit of air conditioner | |
WO2022054128A1 (en) | Outdoor unit | |
JP6530623B2 (en) | Cooking device | |
JP5773190B2 (en) | Drip-proof structure of electrical equipment in heat source machine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 17900428 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2019505660 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 17900428 Country of ref document: EP Kind code of ref document: A1 |