JP3706575B2 - Accumulator fixing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a compressor used for refrigeration / refrigeration and an air conditioner, and particularly an accumulator for fixing an accumulator to a multistage compressor of a refrigeration unit using carbon dioxide refrigerant of a heat pump type hot water heater. It relates to a fixing device.
[0002]
[Prior art]
Conventional accumulator fixing devices are described in, for example, Japanese Utility Model Laid-Open No. 5-1873 and Japanese Patent Application Laid-Open No. 2001-317462.
[0003]
The accumulator fixing devices described in this publication are all accumulator fixing devices that fix an accumulator to a compressor having a single compression function. Currently, accumulator fixing devices that fix an accumulator to a multistage compressor that compresses in multiple stages are currently available. unknown.
[0004]
[Problems to be solved by the invention]
The present invention has been made to solve the above-described problems, and an object thereof is to provide an accumulator fixing device that fixes an accumulator to a multistage compressor.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the invention described in claim 1 is an accumulator fixing device that fixes an accumulator to a multistage compressor having an intermediate pressure refrigerant suction pipe port substantially directly above a low pressure refrigerant suction pipe port. The accumulator fixing device includes a fixing tool provided on an upper portion of a peripheral wall of the compressor and a mounting tool provided on the accumulator, and the fixing tool includes a fixing part fixed to the compressor, A pair of support portions formed by bending the left and right ends of the fixing portion away from the compressor, and a pair of joint portions having fixing holes formed by bending the tips of the support portions outwardly, The tool is formed in a circular arc shape so as to follow the peripheral wall of the accumulator, and is bent outward at the left and right ends of the holding portion, and mounting holes corresponding to the fixing holes are provided. The holding portion is positioned above the vertical center of the accumulator, and the mounting hole is positioned below the vertical center of the accumulator. The fixing tool and the mounting tool are fastened via a fastening tool inserted into the fixing hole and the mounting hole.
[0006]
According to a second aspect of the present invention, in the accumulator fixing device according to the first aspect of the present invention, the holding portion is divided into an upper arc piece and a lower arc piece.
[0007]
According to a third aspect of the present invention, there is provided an accumulator fixing device for fixing an accumulator to a multistage compressor provided with a medium pressure refrigerant suction pipe port substantially directly above a low pressure refrigerant suction pipe port, wherein the accumulator fixing device includes the compression device. A fixing device provided on an upper portion of the peripheral wall of the machine and a mounting device provided on the accumulator. The fixing device includes a fixing unit fixed to the compressor, and left and right ends of the fixing unit connected to the compressor. A pair of support portions that are formed to be bent away from each other, and a pair of joint portions that are formed by bending the tips of the support portions outwardly, respectively, and the fixture is attached to the peripheral wall of the accumulator. Provided with a pair of mounting pieces each having a mounting hole corresponding to the fixed hole, and these mounting pieces have upper ends above the center in the vertical direction of the accumulator. And the mounting hole is positioned below the center in the vertical direction of the accumulator, and the fixing tool and the mounting tool are connected to the fixing hole and a fastener inserted into the mounting hole. It is characterized by being fastened.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic configuration explanatory view of a heat pump hot water supply apparatus according to an embodiment of the present invention, FIG. 2 is a front view of a refrigeration unit according to the embodiment of the present invention, and FIG. 3 is a plan view also serving as an installation example of the refrigeration unit. FIG. 4 is a plan view of the equipment of the refrigeration unit. FIG. 5 is an explanatory view showing a state in which the accumulator fixed to the fixture in Embodiment 1 is removed from the fixture provided on the outer peripheral wall of the compressor. 6 is an explanatory view showing a state in which the accumulator in FIG. 5 is attached, FIG. 7 is a plan view of FIG. 6, and FIG. 8 is a perspective view of the fixture in the first embodiment. In FIG. 1, solid arrows indicate the flow of the refrigerant. 5 and 6, the alternate long and short dash line indicates the center line of the accumulator.
[0009]
Embodiment 1 A heat pump hot water supply apparatus according to the present invention includes a refrigeration unit 1 and a hot water storage unit 2 as shown in FIG. The refrigeration unit 1 and the hot water storage unit 2 are configured as separate bodies.
[0010]
As shown in FIGS. 1 and 4, the refrigeration unit 1 exchanges heat with a compressor 11, a hot water heater 12 that heats hot water using compressor discharge gas, an expansion device 13 such as an electric expansion valve, and outside air. The outdoor heat exchanger 14 and the accumulator 15 which perform an evaporating action are provided at least. These devices are sequentially connected to form the refrigerant circuit 10.
[0011]
In addition, the refrigeration unit 1 includes a compressor unit 21 including a compressor 11, an expansion device 13, an outdoor heat exchanger 14, an accumulator 15, an outdoor fan 16, and the like by a partition wall 33C (see FIGS. 1 and 4). It is divided into a heat exchanger section 22 provided with a hot water heater 12 and the like, and the casings of these sections 21 and 22 are generally divided into sections for each section.
[0012]
The casing of the compressor portion 21 is a substantially U-shaped outer plate in plan view in which a bottom frame 31, a front plate 32, a left side plate 33A, a back plate 33B, and a partition wall 33C of the heat exchanger portion 22 are integrally formed. 33 and a top plate 34 are provided. (Refer to FIGS. 2 and 4) A blow grill 35 is formed on the front plate 32, and suction grills (outside air intake ports) 36, 37 are formed on the left plate 33A and the back plate 33B. A drain drain port 31 </ b> A is provided on the left side of the bottom frame 31. The compressor section 21 is partitioned by such a casing, and the inside thereof is further divided into a heat exchange chamber 41 and an equipment chamber 42 by a partition wall 38. (See Figures 1 and 4)
In the heat exchange chamber 41, an outdoor heat exchanger 14 formed in an L shape so as to face the suction grill 36 of the left side plate 33A and the suction grill (outside air inlet) 37 of the back plate 33B is disposed. An outdoor fan 16 is disposed on the front surface of the outdoor heat exchanger 14. (Refer to FIG. 4) In the equipment chamber 42, a compressor 11, an expansion device 13, an accumulator 15, and an electrical component box (not shown) are arranged. (See FIG. 1) The partition wall 33C is provided with a service window for an electrical component box (not shown), a through-hole (not shown) for penetrating refrigerant piping, electric wires, and the like.
[0013]
Next, the heat exchanger unit 22 includes a bottom plate 51, a flat plate-like outer plate 52 that makes up most of the back plate on the back surface, the remaining portion of the back plate on the back surface, the right side plate on the side surface, and the front plate on the front surface. A substantially J-shaped, that is, a multi-sided outer plate 53 and a top plate 54 are formed in a divided manner. The flat plate-like outer plate 52 and the polyhedral outer plate 53 are detachably fixed to the partition wall 33C and the bottom plate 51 by screws or the like. Therefore, the multi-faced outer plate 53 is detachable from the compressor 21.
[0014]
In the present invention, the “back surface having an outside air inlet” refers to a surface on which the back plate 33B of the outer plate 33, the outer plate 52 having a planar shape, and the back plate 53A of the outer plate 53 are attached. Say. The “outer plate attached to the back surface having the outside air inlet” means a generic name of the back plate 33B of the outer plate 33, the planar outer plate 52, and the back plate 53A of the outer plate 53.
[0015]
And the hot water heater 12 is arrange | positioned in the heat exchanger part 22 divided and formed in this way. Further, two water piping joints 64 for the water piping 63 for connecting the hot water heater 12 and the hot water storage tank 81 are attached to the back surface of the bottom plate 51, that is, the portion facing the planar outer plate 52. A mounting plate (not shown) is erected. The two water pipe joints 64 are attached to the attachment plate 55 so that the pipe connection portion is outside the flat plate-like outer plate 52 and arranged linearly in the height direction. . Further, the water pipe joint 64 is a right angle elbow for water pipe connection, and the pipe connection direction is 360 ° variable (rotatable) in a plane parallel to the back surface.
[0016]
Although the detailed structure diagram is omitted, the hot water storage unit 2 includes a hot water storage tank 81 and is configured as a unit independent of the refrigeration unit 1 as can be seen from FIG. The hot water storage tank 81 is connected to the hot water heater 12 through a water pipe 63. A hot water supply pump 82 is provided in the middle of the water pipe 63. Connected to the hot water storage tank 81 are a hot water supply pipe 84 connected to the hot water tap and a replenishment water pipe 85 for replenishing the hot water storage tank 81 with tap water. The hot water supply pump 82 is provided in the hot water storage unit 2.
[0017]
Further, at the lower part of the compressor 11 disposed in the equipment chamber 42, a low-pressure refrigerant suction pipe port 11B for sucking low-pressure refrigerant, and an intermediate pressure for sucking medium-pressure refrigerant at a slight distance above it. A refrigerant suction pipe port 11A is provided. An L-shaped low-pressure refrigerant pipe TH is connected to the low-pressure refrigerant suction pipe port 11B, and an L-shaped medium-pressure refrigerant pipe CH is connected to the intermediate-pressure refrigerant suction pipe port 11A.
[0018]
Furthermore, the compressor 11 is provided with a cylindrical accumulator 15 for removing liquid particles, and the accumulator 15 is connected to the connecting pipe SH formed in a U shape so as not to hit the intermediate pressure refrigerant suction pipe port 11A. The connecting pipe SH is connected to the low-pressure refrigerant pipe TH. An accumulator fixing device 100 is provided to fix the accumulator 15 to the compressor 11. The compressor 11 is further provided with a high-pressure discharge pipe KT and an intermediate-pressure discharge pipe CT for discharging refrigerant.
[0019]
The accumulator fixing device 100 includes a fixing bracket (fixing tool) 110 provided on the upper portion of the outer peripheral wall of the compressor 11 and a mounting tool 120 provided on the accumulator 15.
[0020]
The fixing bracket 110 has a fixing portion 110A fixed along the outer peripheral wall of the compressor 11 at an intermediate portion, and a pair of support portions formed by bending left and right ends of the fixing portion 110A away from the compressor 11. 110B and a pair of joint portions 110C having a fixing hole 110D formed by bending the tips of the support portions 110B outward.
[0021]
The mounting tool 120 has a holding part 121 formed in an arc shape so as to follow the peripheral wall of the accumulator 15, and is bent outward at the left and right ends of the holding part 121, respectively, and a mounting hole 120D corresponding to the fixing hole 110D. And a mounting portion 120 </ b> C provided with. The holding portion 121 has its upper end 121A positioned in the vertical center of the accumulator 15, that is, above the center line 15C, and the mounting hole 121D is the vertical center of the accumulator 15, that is, the center line. It is set as the structure located below 15C.
[0022]
The fixing bracket 110 and the mounting tool 120 are fastened via a fixing hole 110D and a bolt B (fastening tool) inserted into the mounting hole 120D.
[0023]
Further, the mounting portion 120C of the mounting tool 120 is provided so as to be biased toward the fixing tool 110 with respect to the connecting pipe SH.
[0024]
The heat pump type hot water supply apparatus configured as described above is installed, for example, as shown in FIG. That is, the refrigeration unit 1 that needs to suck and exhaust outside air is attached to the corner portion of the wall surface W of the veranda with the back surface having the suction grille (outside air intake port) 37 as the wall surface side. On the other hand, since the hot water storage unit 2 does not take in or exhaust outside air, the hot water storage unit 2 is attached to an appropriate place completely different from the installation place of the refrigeration unit 1.
[0025]
In addition, the water pipe 63 necessary for connecting the refrigeration unit 1 and the hot water storage unit 2 is provided vertically on the outer plate portion where the water pipe joint 64 is attached to the back surface of the refrigeration unit 1. Can be laid in order along the wall surface W without being interfered with each other.
[0026]
Moreover, the water pipe joint 64 is a right angle elbow for water pipe connection, and the pipe connection direction can be changed by 360 ° in a plane parallel to the back surface. For example, the pipe connection direction is changed to the right or left depending on the mounting position of the hot water storage unit 2. By changing to any direction, piping from the refrigeration unit 1 to the target direction can be easily and directly performed. Therefore, the space required for the water pipe 63 can be reduced, and eventually the dimension D (see FIG. 3) in the front-rear direction including the space of the water pipe 63 can be reduced. Installation space can be reduced.
[0027]
Furthermore, since the compressor unit 21 and the heat exchanger unit 22 are also arranged on the left and right sides of the refrigeration unit 1 itself toward the surface having the suction grille (outside air intake port) 37, the dimension T (see FIG. 3) and the installation space of the refrigeration unit 1 can be further reduced.
[0028]
Further, the power supply wiring work required for installing the refrigeration unit 1 is connected so that it is not conspicuous on the back side of the refrigeration unit 1 because the power terminal board 65 is attached in the vicinity of the water pipe joint 64. Can improve the appearance. Moreover, since such wiring work can be performed from the service lid 52A provided on the planar outer plate 52 constituting the back plate of the heat exchanger section 22, the work is facilitated.
[0029]
The accumulator fixing device 100 includes a fixing metal 110 fixed to the upper part of the peripheral wall of the compressor 11 and an attachment 120 fixed to the accumulator 15, and the attachment 120 follows the peripheral wall of the accumulator 15. The holding part 121 is formed in an arc shape. The holding portion 121 has its upper end 121A positioned in the vertical center of the accumulator 15, that is, above the center line 15C, and the mounting hole 121D is the vertical center of the accumulator 15, that is, the center. Since it is positioned below the line 15C and is fastened by a bolt B (fastening tool), the vibration of the accumulator 15 due to the vibration of the compressor 11 can be reduced, and cracks in the welded part of the pipe can be prevented. can do.
[0030]
In addition, since the holding portion 121 is divided into the upper arc piece 120A and the lower arc piece 120B, as shown in FIG. 5, even if the outer diameter of the accumulator 15 is different, it can be securely fixed by welding. The vibration of the accumulator 15 due to vibration can be reduced, and cracks in the welded portion of the pipe can be prevented.
[0031]
Further, since the mounting portion 120C of the mounting tool 120 is provided so as to be biased toward the fixing device 110 with respect to the connecting pipe SH, the intermediate pressure refrigerant suction pipe port 11A is slightly above the low pressure refrigerant suction pipe port 11B. Even in the compressor 11 having a structure provided with a sufficient interval, the intermediate-pressure refrigerant suction pipe port 11A and the connection pipe SH do not come into contact with each other.
[0032]
Embodiment 2 Next, a second embodiment of the present invention will be described with reference to FIGS. 1 to 4 and FIGS. 9 to 12. FIG. FIG. 9 is an explanatory view showing a state in which the accumulator fixed to the fixture in Embodiment 2 is removed from the fixture provided on the outer peripheral wall of the compressor, and FIG. 10 shows a state in which the accumulator in FIG. 9 is attached. FIG. 11 is a plan view of FIG. 10, and FIG. 12 is a perspective view of the fixture according to the second embodiment. In FIGS. 1 to 4 and FIGS. 9 to 12, the same components as those of the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.
[0033]
9 to 12, the accumulator fixing device 200 includes a fixing bracket 110 fixed to the upper portion of the outer peripheral wall of the compressor 11 by welding, and a fixture 210 attached to the accumulator 15. Is constituted by a pair of attachment pieces 210A and 210B provided with attachment holes 211A and 211B corresponding to the fixing hole 110D. The pair of mounting pieces 210A and 210B are arranged so that the joining surfaces 210E and 210F joined to the joining part 110C are on a substantially linear extension line, and the upper ends 211C and 211D of the accumulator 15 are vertically centered. That is, the mounting holes 211A and 211B are positioned above the center line 15C, and the center of the accumulator 15 in the vertical direction, that is, below the center line 15C, and are welded to the peripheral wall of the accumulator 15, respectively. And fixed.
[0034]
Then, the fixture 110 and the fixture 210 are fastened via a fixing hole 110D and a bolt B (fastener) inserted into the fixture hole 210D.
[0035]
Further, the mounting pieces 210A and 210B of the mounting tool 210 are provided so as to be biased toward the fixing tool 110 from the connecting pipe SH.
[0036]
Since the second embodiment is configured as described above, when the outer diameter of the accumulator 15 is the same as shown in FIG. 9, the fixture 210 can be created with a simple shape and can be securely fixed by welding. The vibration of the accumulator 15 due to the vibration of the compressor 11 can be reduced, and cracks in the welded portion of the pipe can be prevented.
[0037]
Further, since the mounting pieces 210A and 210B of the mounting tool 210 are provided so as to be biased toward the fixing tool 110 with respect to the connection pipe SH, the intermediate pressure refrigerant suction pipe port 11A is substantially directly above the low pressure refrigerant suction pipe port 11B. Even in the compressor 11 having a structure provided at a slight interval, the intermediate-pressure refrigerant suction pipe port 11A and the connection pipe SH do not come into contact with each other.
[0038]
As mentioned above, although this invention was demonstrated based on two embodiment, this invention is not limited to this.
[0039]
【The invention's effect】
As described above, according to the first aspect of the present invention, in the accumulator fixing device that fixes the accumulator to the multistage compressor provided with the intermediate pressure refrigerant suction pipe port substantially directly above the low pressure refrigerant suction pipe port. The accumulator fixing device includes a fixing tool provided on an upper portion of a peripheral wall of the compressor and a mounting tool provided on the accumulator, and the fixing tool includes a fixing part fixed to the compressor, A pair of support portions formed by bending the left and right ends of the fixing portion away from the compressor, and a pair of joint portions having fixing holes formed by bending the tips of the support portions outwardly, The mounting tool is formed in a circular arc shape so as to follow the peripheral wall of the accumulator, and is bent outward at the left and right ends of the holding section, and mounting holes corresponding to the fixing holes are provided. And the holding portion has an upper end positioned above the vertical center of the accumulator and the mounting hole positioned below the vertical center of the accumulator. Since the fixing tool and the fixture are fastened through the fixing hole and a fastener inserted into the mounting hole, the vibration of the accumulator due to the vibration of the compressor can be reduced. It is possible to prevent cracks in the welded part of the pipe.
[0040]
According to the second aspect of the present invention, in the accumulator fixing device according to the first aspect, since the holding portion is divided into an upper arc piece and a lower arc piece, the outer diameter of the accumulator is different. Even if it is, it can be fixed with an arc piece along its outer diameter, so that the accumulator shake due to the vibration of the compressor can be reduced, and cracks in the welded part of the pipe can be prevented.
[0041]
According to a third aspect of the present invention, there is provided an accumulator fixing device for fixing an accumulator to a multistage compressor provided with a medium pressure refrigerant suction pipe port substantially directly above a low pressure refrigerant suction pipe port, wherein the accumulator fixing device includes the compression device. A fixing device provided on an upper portion of a peripheral wall of the machine and a mounting device provided on the accumulator. The fixing device includes a fixing part fixed to the compressor, and left and right ends of the fixing part connected to the compressor. A pair of support portions that are formed to be bent away from each other, and a pair of joint portions that are formed by bending the tips of the support portions outwardly, respectively, and the fixture is attached to the peripheral wall of the accumulator. It is provided with a pair of mounting pieces provided in the vertical direction and having mounting holes, and the mounting tool is provided on a peripheral wall of the accumulator and has mounting holes corresponding to the fixing holes. The upper end of each of the mounting pieces is positioned above the vertical center of the accumulator, and the mounting hole is positioned lower than the vertical center of the accumulator. Since the fixing device and the fixture are fastened via the fixing hole and a fastener inserted into the mounting hole, the accumulator is shaken by the vibration of the compressor with a simpler structure. Can be reduced, and cracks in the welded portion of the pipe can be prevented.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic configuration diagram of a heat pump type hot water supply apparatus showing an embodiment of the present invention.
FIG. 2 is a front view of a refrigeration unit showing an embodiment of the present invention.
FIG. 3 is a plan view also serving as an example of installation of a refrigeration unit showing an embodiment of the present invention.
FIG. 4 is an equipment plan layout view of a refrigeration unit showing an embodiment of the present invention.
FIG. 5 is an explanatory view showing a state where an accumulator fixed to a fixture in Embodiment 1 of the present invention is removed from the fixture.
FIG. 6 is an explanatory view showing a state in which the accumulator fixed to the fixture according to Embodiment 1 of the present invention is attached to the fixture.
FIG. 7 is a plan view of FIG. 6 in Embodiment 1 of the present invention.
FIG. 8 is a perspective view of a fixture according to Embodiment 1 of the present invention.
FIG. 9 is an explanatory view showing a state where an accumulator fixed to a fixture according to Embodiment 2 of the present invention is removed from the fixture.
FIG. 10 is an explanatory view showing a state where an accumulator fixed to a fixture according to Embodiment 2 of the present invention is attached to the fixture.
FIG. 11 is a plan view of FIG. 10 in Embodiment 2 of the present invention.
FIG. 12 is a perspective view of a fixture according to Embodiment 2 of the present invention.
[Explanation of symbols]
11 Compressor 11A Medium Pressure Refrigerant Suction Piping Port 11B Low Pressure Refrigerant Suction Piping Port 15 Accumulator 15C Center Line (Center)
100 Accumulator fixing device (Embodiment 1)
110 Fixing bracket (fixing tool)
110A fixing part 110B support part 110C joint part 110D fixing hole 120 fixture (Embodiment 1)
120A Upper arc piece 121 Holding part 121A Upper end 120B Lower arc piece 200 Accumulator fixing device (Embodiment 2)
210 Attachment (Embodiment 2)
210A Mounting piece 210B Mounting piece 211A Mounting hole (Embodiment 2)
211B Mounting hole (Embodiment 2)
211C Upper end (Embodiment 2)
211D Upper end (Embodiment 2)
B Bolt (fastener)

Claims (3)

In an accumulator fixing device for fixing an accumulator to a multistage compressor provided with a medium pressure refrigerant suction pipe port substantially directly above the low pressure refrigerant suction pipe port,
The accumulator fixing device is composed of a fixing tool provided on an upper portion of a peripheral wall of the compressor, and a mounting tool provided on the accumulator,
The fixing tool includes a fixing portion fixed to the compressor, a pair of support portions formed by bending the left and right ends of the fixing portion away from the compressor, and bending the tips of the support portions outwardly. A pair of joints having a fixed hole formed,
The mounting tool is formed in a circular arc shape so as to follow the peripheral wall of the accumulator, and is bent outward at the left and right ends of the holding part, and mounting holes corresponding to the fixing holes are provided. With a mounting part,
The holding portion is configured such that the upper end thereof is positioned above the center in the vertical direction of the accumulator, and the mounting hole is positioned below the center in the vertical direction of the accumulator,
The accumulator fixing device characterized in that the fixing tool and the mounting tool are fastened through the fixing hole and a fastening tool inserted into the mounting hole. The accumulator fixing device according to claim 1, wherein the holding portion is divided into an upper arc piece and a lower arc piece. In an accumulator fixing device for fixing an accumulator to a multistage compressor provided with a medium pressure refrigerant suction pipe port substantially directly above the low pressure refrigerant suction pipe port,
The accumulator fixing device is composed of a fixing tool provided on an upper portion of a peripheral wall of the compressor, and a mounting tool provided on the accumulator,
The fixing tool includes a fixing portion fixed to the compressor, a pair of support portions formed by bending the left and right ends of the fixing portion away from the compressor, and bending the tips of the support portions outwardly. A pair of joints having a fixed hole formed,
The mounting tool is provided on a peripheral wall of the accumulator, and is configured by a pair of mounting pieces provided with mounting holes corresponding to the fixing holes. These mounting pieces have upper ends thereof that are higher than the vertical center of the accumulator. The mounting hole is positioned above and below the center of the accumulator in the vertical direction.
The accumulator fixing device characterized in that the fixing tool and the mounting tool are fastened through the fixing hole and a fastening tool inserted into the mounting hole.

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