JP2011002207A - Water heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To save the space of a housing of a water heating device and facilitate maintenance and inspection work of constitution equipment in the housing.SOLUTION: On a base plate 14 in the housing 12 of the water heating device 10, a compressor 15, a gas cooler 20, a capillary kit 28 and a water supply pump 22 are in an unfixed state and slidable and can be taken out of the housing 12 during maintenance and inspection. An air and heat source heat exchanger 40 includes heat-collecting fins 42 and a heat exchange pipe group 44 for flow of refrigerant and air flow passages are provided in a penetrating manner between the heat-collecting fins 42. An air lead-out fan 48 is provided in an air lead-out opening 46 provided in the upper face of the housing 12 to form an air stream flowing in from the air flow passages and flowing out from the air lead-out opening 46. The air and heat source heat exchanger 40 is arranged while detouring the compressor 15 and the gas cooler 20 so that the space of the housing 12 can be saved.

Description

  The present invention relates to a water heater that includes a heat pump cycle in which a coolant for hot water supply circulates in a housing, which can save space and facilitates maintenance of devices provided in the housing.

The applicant of the present invention has previously described a compressor, a gas cooler (heat exchanger for hot water supply), an expander such as a capillary tube (for example, a capillary kit), and an evaporator (for example, a heat exchanger using air as a heat source). Has been proposed, and a heat pump cycle using CO ₂ as a refrigerant is configured, and CO ₂ is brought into a supercritical state on the discharge side of the compressor, thereby proposing a hot water supply device capable of supplying high-temperature water of about 90 ° C. (patent) Reference 1).

  Such a water heater is usually a unit-type water heater in which the devices are arranged on a basic surface in a housing. Among the devices, the water supply pump that introduces hot water supply water into the capillary tube and the gas cooler is lightweight, while the volume and weight of the compressor (including the drive motor) and the gas cooler are much larger. For this reason, it is difficult to arrange the components in the housing, and the volume of the housing tends to increase.

  Further, an uneven load is likely to be applied to the foundation surface on which the housing is installed and fixed. Therefore, the installation of the housing becomes unstable during staking at the time of installation, and the foundation portion to which a large load is applied is liable to be damaged. Further, since the housing has a sealed structure except for the air flow passage for heat exchange, maintenance of the components in the housing is not easy.

JP 2007-303807 A

  As described above, there is a difference in the volume and weight of the component devices built in the housing, there is a problem that it is difficult to arrange each component device on the basic surface in the housing, and the volume of the housing tends to be large, There is a problem that it is not easy to maintain and inspect the components in the housing.

  Then, in view of the subject of this prior art, this invention aims at making the maintenance inspection of the component apparatus in a housing easy while saving the space of the housing of a hot water supply apparatus.

In order to achieve this object, the water heater of the present invention is
A heat pump cycle including a compressor, a gas cooler, an expander, and an air heat source evaporator in which a refrigerant for hot water supply circulates;
A housing containing the heat pump cycle and having an air inlet on the side and an air outlet on the upper surface;
In the water heater provided with a blower that forms an air flow that flows from the air suction port to the air discharge port through the air heat source evaporator in the housing.
The compressor and the gas cooler are fixed on the substrate in the housing, and a slide mechanism is provided that allows the compressor and the gas cooler to slide out of the housing in an unfixed state.
The air heat source evaporator is formed in a panel shape with the air suction port interposed therebetween so as to form at least a part of the housing side wall.

  In the present invention, since a heavy object such as a compressor or a gas cooler is released from the fixed state on the substrate in the housing and can be slid out of the housing by the slide mechanism, maintenance and inspection work is facilitated. Equipment other than the compressor and gas cooler is lightweight, so it can be taken out of the housing just by releasing the fixed state to the substrate without providing a special slide mechanism. The maintenance inspection work becomes easy by transporting the outside of the housing.

  In addition, since the air heat source evaporator is formed in a panel shape so as to form at least a part of the side wall of the housing, the housing can be saved, and the air heat source evaporator has a large size in the height direction of a compressor or a gas cooler. Since it does not interfere with the arrangement, the height of the housing can be reduced.

In the present invention, the slide mechanism of the compressor is composed of a recess disposed opposite to the substrate at a lower portion of the compressor, and a low friction material having a slide surface that is fitted and fixed to the recess and contacts the substrate. Good.
Accordingly, the compressor can easily slide on the substrate with a low-cost configuration, and the compressor can be easily carried out of the housing.

Moreover, in this invention, it is good to comprise the slide mechanism of a gas cooler with the some guide rod fixed to the bottom face of the gas cooler toward the slide direction of the gas cooler.
As a result, the gas cooler can be carried out of the housing with a low-cost configuration using the guide rod.

Further, in the present invention, the air heat source evaporator includes a large number of heat collecting fins arranged in parallel with an interval between each other, and a heat exchange pipe for refrigerant circulation that is provided in the heat collecting fins with an interval therebetween. It is preferable that an air flow passage is formed between the heat collecting fins and between the heat exchange pipe groups for refrigerant circulation.
Accordingly, the heat transfer area between the refrigerant circulation heat exchange tube group and the air can be expanded to improve the heat exchange efficiency.

Further, in the present invention, the refrigerant is CO _2, at the outlet side of the compressor CO ₂ is preferable to configure the heat pump cycle as a supercritical state. This makes it possible to produce high-temperature water with a wide range of uses exceeding 90 ° C. with a gas cooler with high efficiency.

  According to the water heater of the present invention, the heat pump cycle includes a compressor, a gas cooler, an expander, and an air heat source evaporator in which a hot water supply refrigerant circulates, and includes the heat pump cycle, and the air suction port on the side surface and the air on the upper surface. In a water heater comprising a housing having a discharge port and a blower for forming an air flow flowing from the air suction port to the air discharge port via an air heat source evaporator in the housing, the compressor and the substrate on the substrate in the housing In addition to fixing the gas cooler, the compressor and the gas cooler are provided with a slide mechanism that is slidable outside the housing in a non-fixed state, and the air heat source evaporator is formed in a panel shape with an air intake port interposed therebetween to form a side wall As a result, it is easy to perform maintenance and inspection of the devices constituting the water heater. Allowing space saving housing containing class.

1 is an overall perspective view of a water heater according to an embodiment of the present invention. It is the top view which abbreviate | omitted the housing upper surface of the said water heater. It is a partial enlarged view of the air heat source heat exchanger 40 of the water heater. (A) is a left side view of the water heater, (b) is also a front view, (c) is a right side view, and (d) is a rear view. It is a top view of the basic structure 70 of the water heater. It is a front view of the base 72 of the water heater. It is a perspective view of the cross beam 76 of the water heater. It is a perspective view which shows the assembly state of the base 72 of the said water heater. It is the perspective view which expanded the A section in FIG. It is a top view of the sheet metal before producing the stringer 78 of the water heater. It is sectional drawing which shows the installation structure to the basic surface f of the said water heater. It is a front view of the installation structure of the compressor 15 of the said water heater. FIG. 13 is a plan view sectional view taken along line BB in FIG. 12. It is a perspective view of the low friction stands 1124 and 126 of the installation structure of the compressor 15. FIG. It is a perspective view of the gas cooler 20 of the water heater.

  Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in this embodiment are not intended to limit the scope of the present invention to that unless otherwise specified.

One embodiment in which the present invention is applied to a water heater constituting a heat pump cycle using CO ₂ as a refrigerant will be described with reference to FIGS.
First, the whole structure of the water heater 10 according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a perspective view of the water heater 10 as viewed from the front surface 12a side, and FIG. 2 is a plan view in which the upper surface 12a of the housing 12 of the water heater 10 is omitted. 1 and 2, the housing 12 of the water heater 10 has a rectangular parallelepiped shape, and a substrate 14 constituting the bottom surface of the housing 12 is provided inside the housing 12. The substrate 14 has a flat surface, and its outer edge is rectangular.

  A compressor 15 is disposed on the left side region near the back surface 12 c on the substrate 14, and a soundproof case 16 is disposed so as to surround the compressor 15. In addition, illustration of the soundproof case 16 is abbreviate | omitted in FIG. Further, hereinafter, “left” or “right” indicates a position when viewed from the front surface 12b side. The soundproof case 16 is made of FRP and a sound absorbing material and has a waterproof function. The upper surface of the soundproof case 16 can be opened and closed. By opening this upper surface, maintenance and inspection of the compressor 15 can be performed even with the soundproof case 16 provided.

  The power control panel 18 is disposed on the upper right side rear surface, the gas cooler 20 is disposed in the right region on the substrate 30, and one surface of the gas cooler 20 faces the rear surface 12c. In addition, a water supply pump 22 that supplies hot water to the gas cooler 20 is fixed to a right region near the front surface 12 b on the substrate 14. A cylindrical supercritical tank 24 is erected in the vertical direction substantially at the center of the substrate 14.

  A bypass passage (not shown) branches to a discharge-side refrigerant passage (not shown) of the compressor 15, and the supercritical tank 24 is interposed in the bypass passage, and a part of the refrigerant is stored in the supercritical tank 24. By doing so, the amount of refrigerant flowing through the refrigerant flow path is adjusted. In addition, an electric two-way valve 26 interposed between the refrigerant flow path and the bypass path for switching and supplying the refrigerant to the refrigerant flow path or the bypass path is provided between the feed pump 22 and the supercritical tank 24. Arranged between. Further, a box-shaped capillary kit 28 containing a collection of a plurality of capillary tubes arranged in parallel is disposed on the substrate 14 facing the left front surface 12a.

In the housing 12, a decorative plate or the like is attached to five support columns 30, 32, 34, 36, and 38 that are erected in the vertical direction to form a partition wall. Upper regions of the front surface 12b, the left side surface 12d, and the right side surface 12e of the housing 12 are configured by an air heat source heat exchanger 40 formed in a U-shaped panel shape. As shown in FIG. 3, the air heat source heat exchanger 40 includes a large number of heat collecting fins 42 arranged in parallel in the vertical direction with an interval i, and a direction perpendicular to the heat collecting fins 42 through the heat collecting fins 42. And a refrigerant circulation heat exchange tube group 44 arranged at a distance from each other. Then, the outside air a is introduced from the interval i, the outside air a exchanges heat with the CO ₂ refrigerant flowing through the refrigerant circulation heat exchange tube group 44, and gives latent heat of evaporation to the CO ₂ refrigerant.

The partition walls of the housing 12 other than the air heat source heat exchanger 40 and the power control panel 18 are shielded by shielding panels 54 to 66 that are configured separately. These shielding panels are detachably attached to the columns 40 to 48.
Two circular air outlets 46 are provided on the upper surface 12 a of the housing 12, and an air outlet fan 48 is provided in the air outlet 46. The air outlet 46 is covered with a bird net 50 that is a combination of a concentric net and a radial net.

The operation of the air derivation fan 48 introduces the outside air a from the interval i formed in the air heat source heat exchanger 40, forms an air flow in the upper space in the housing 12, and passes the air derivation port 46 to the outside of the housing. Discharged.
FIG. 4 is an external view of the water heater 10 viewed from each direction. As shown in FIG. 4, a net-like bird net 52 is formed outside the air heat source heat exchanger 40 by combining wires in a lattice pattern.

  Next, the basic structure 70 of the water heater 10 will be described with reference to FIGS. As shown in FIG. 5, the basic structure 70 includes a substrate 14 and a base 72 arranged below the substrate 14. The base 72 has a rectangular base frame 74 (see FIG. 8) formed in a U shape by bending the four corners of the substrate 14 downward, and a cross beam 76 fixed to the lower surface of the substrate 14 in a state of crossing each other. And a vertical string 78.

A plurality of horizontal beams 76 and vertical beams 78 are arranged in parallel below the substrate 14. The cross beam 76 and the vertical beam 78 cross each other at 90 ° in a direction perpendicular to each other, and are joined at the crossing portion.
As shown in FIG. 7, the cross beam 76 has a U-shaped cross section. In the cross beam 76, slit-like grooves 80 are formed at equal intervals in the longitudinal direction. The length of the long side of the cross beam 76 has a length obtained by subtracting from the long side of the substrate 14 by the thickness of the rectangular base frame 74. The cross beam 76 is arranged in parallel with the long side of the substrate 14. The front end of the cross beam 76 is fixed to the inner side surface of the rectangular base frame 74.

  As shown in FIG. 8, the stringer 78 has a U-shaped cross section, and slit-shaped grooves 82 are provided at unequal intervals in the longitudinal direction. Bolt holes 84 for connecting the substrate 14 are formed in the upper surface 78 a of the stringer 78. The stringer 78 is arranged in parallel with the short side of the substrate 14, and the length of the long side of the stringer 78 is larger than the length of the short side of the substrate 14, and as shown in FIG. Is made to protrude from the long side of the substrate 14.

  A bottom plate 88 is welded to the distal end portion 86 of the stringer 78 to form a box-shaped cross section. Bolt holes 90 for inserting anchor bolts for fixing the base 72 to the base surface f are formed in the bottom plate 88. Holes 94 and 96 through which the unloading sling belt 92 is passed are formed in both side walls 78b and 78c of the stringer 78, and the water heater 10 can be suspended by the unloading sling belt 92. A concave groove 98 is provided on the upper surface 78a located above the bolt hole 90 in order to improve workability when the anchor bolt is passed through the bolt hole 90.

  The cross beam 76 or the vertical beam 78 is manufactured from a flat sheet metal. FIG. 10 shows a sheet metal 100 for stringers. The flat rectangular sheet metal 100 is provided with concave grooves 98 and 100, slit-shaped concave grooves 82 and bolt holes 84, and a fold line b is provided. Next, the side walls 78b and 78c are bent along the crease line b to form a U-shaped cross section. Next, the bottom plate 88 is welded to both ends. The cross beam 76 is also produced from a flat sheet metal by a similar processing procedure.

The cross beam 76 and the vertical beam 78 thus produced are fitted with slit-shaped grooves 80 and 82 as shown in FIG. 8, and combined in a lattice shape orthogonal to each other as shown in FIG. And a fitting part is couple | bonded by welding w.
Since the slit-like grooves 80 are arranged at equal intervals, the stringers 78 are arranged at equal intervals. On the other hand, the slit-shaped grooves 82 are arranged at unequal intervals according to the weight distribution applied to the substrate 14. That is, the cross beams 76 are set so as to be densely arranged in a region where a large weight is applied.

Further, in FIG. 8, among the end edges 104 of the left and right side surfaces 76b and 76c of the cross beam 76, the end edge 104a of the portion where the upper surface 78a of the vertical beam 78 hits is shortened by the thickness of the upper surface 78a. For this reason, the upper surface of the upper surface 78a and the edge 104 of the cross beam 76 have the same height, thereby forming a flat surface on which the substrate 14 is placed.
As shown in FIG. 9, a concave groove 74a into which the stringer 78 is fitted is formed in the rectangular base frame 74, and a leading end 86 of the stringer 78 is fitted into the groove 74a. Since the height of the rectangular base frame 74 is set to be the same as the height of the horizontal beam 76 or the vertical beam 78, the bottom surface of the base 72 forms a bottom surface having the same height, and the bottom surface is the basic surface. It abuts on f.

  Next, the substrate 14 is placed on the edge 104 of the cross beam 76 and the upper surface 78 a of the vertical beam 78, and the substrate 14 is bolted to the upper wall 78 a of the vertical beam 78 using the bolt holes 84. In this way, the foundation structure 70 is formed. As shown in FIG. 9, a shielding panel 106 is erected on the substrate 14 by bolting or the like. The shielding panel 106 can be removed at the time of maintenance and inspection work of the devices in the housing 12.

  Next, means for fixing the base 72 to the base surface f will be described with reference to FIG. In FIG. 11, a hole 108 is drilled in the base surface f. Next, the capsule 110 in which the adhesive s is sealed is inserted into the hole 108. Next, the anchor bolt 112 whose tip is cut obliquely is driven into the capsule 110 through the bolt hole 90. As a result, the adhesive sealed in the capsule 110 undergoes a chemical change and solidifies, and the anchor bolt 112 is fixed to the base surface f.

In the water heater 10, the compressor 15 is the heaviest item exceeding several hundred kg, and the gas cooler 20 has a weight exceeding 100 kg. As shown in FIG. 1, these heavy heavy objects are unevenly distributed on the rear side of the housing, while a light-weight water supply pump 22 and a capillary kit 28 of about 10 kg are arranged on the front side of the housing. For this reason, an uneven load is applied to the substrate 14 near the back surface in the sling at the time of installation, and the basic structure under the compressor where the maximum weight is loaded is likely to be damaged.
In order to solve this problem, the distance between the cross beams 76 on the back side is arranged closer than that on the front side, and the weight applied to each cross beam 76 is averaged.

  That is, in the installation area of the compressor 15 which is the heaviest item, the horizontal beams 76 are arranged closer to each other than the other areas, and the compressor 15 is supported by the two vertical beams 78. Next, the heavy gas cooler 20, the lightweight water supply pump 22 and the capillary kit 28 are supported by one cross beam 76 and a rectangular base frame 74. The air heat source heat exchanger 40 forms part of the side wall of the housing, and is supported by the rectangular base frame 74. The supercritical tank 24 disposed substantially at the center of the substrate 14 is supported by one stringer 78. In the area where no heavy objects are arranged, the interval between the cross beams 76 is set wide.

Thus, the load applied to the foundation structure 70, that is, the cross beam 76, the vertical beam 78, and the rectangular base frame 74 is averaged by the weight of the heavy object incorporated in the housing 12. Therefore, the water heater 10 can be stably supported in the sling at the time of installation, and damage to the foundation structure 70 or the foundation surface f can be prevented.
In addition, the space | interval between the horizontal beam 76 or the vertical beam 78 can be easily changed by changing the space | interval of the slit-shaped ditch | groove 80 or 82. FIG.

  Next, an installation structure for installing the compressor 15 on the substrate 14 will be described with reference to FIGS. 12-14, the stay 116 which supports the casing 114 is integrally formed in the lower part of the casing 114 of the compressor 15. In FIG. A flat base 118 is disposed between the stay 116 and the substrate 14, and cases 120 and 122 are welded to the lower surface of the base 118 toward the back side of the housing 12. The case 120 has the same long side as the short side of the gantry 118, the case 122 has a long side shorter than the case 120, and two cases 122 are arranged in series.

  The case 120 has a U-shaped cross section and has a bag-like recess surrounded by a partition at four corners. The case 122 has a rectangular ring shape that surrounds the four sides, and is fixed to the lower surface of the gantry 118 to form a bag-like recess. A low friction table 124 shown in FIG. 14A is inserted into the recess of the case 120, and a low friction table 126 shown in FIG. 14B is inserted into the recess of the case 122. Through holes 124 a for inserting bolts 128 are formed at both ends of the low friction table 124, and through holes 16 a for inserting bolts 130 are formed at one end of the low friction table 126. The low friction tables 124 and 126 are made of a resin having a low friction coefficient such as high molecular weight polyethylene.

  The gantry 118, the case 120, and the low friction platform 124 are coupled to the substrate 14 with bolts 128, and the gantry 118, the case 122, and the low friction platform 126 are coupled to the substrate 14 with bolts 130. A rectangular plate 132 and a vibration isolating plate 134 are disposed between the stay 116 and the gantry 118 and are coupled by bolts 138 and nuts 139. The anti-vibration plate 134 includes an iron plate and rubber plates disposed on both sides of the iron plate, and the iron plate and the rubber plate are vulcanized and bonded. Anti-vibration rubber 136 is inserted between the nut 139 and the stay 116 to prevent the vibration of the casing 114 from being transmitted to the gantry 118 via the bolt 138.

  When performing maintenance and inspection work for the compressor 15, first, the bolts 128 and 130 are removed to bring the compressor 15 into an unfixed state. Next, the shielding panel 66 disposed on the front surface of the compressor 15 is removed, and the rear housing wall in the vicinity of the compressor 15 is opened (see FIG. 4D). Next, the casing 114 of the compressor 15 is slid out of the housing, and maintenance inspection work is performed.

  Next, the installation structure of the gas cooler 20 will be described with reference to FIG. In FIG. 15, a casing 21 of the gas cooler 20 has a box shape, and an installation stay 140 is integrally fixed to four lower portions of the casing 21. Further, two round bars 142 are fixed to the lower surface of the casing 21 in parallel with the stringers 78 of the housing 12. The casing 21 is fixed to the substrate 14 by mounting bolts (not shown) inserted into the holes 140a of the stay 140.

  The gas cooler 20 is disposed below the power control panel 18 and is disposed immediately inside the shielding panel 64 shown in FIG. When performing maintenance of the gas cooler 20, the shielding panel 64 is removed, and the back side casing wall near the gas cooler is opened. Next, the bolts fixing the stay 140 to the substrate 14 are removed, and the casing 21 is brought into an unfixed state. Next, the casing 21 is slid and carried out of the housing to perform maintenance and inspection work.

  The water supply pump 22 and the capillary kit 28 are disposed on the front side of the housing 12. Since the water supply pump 22 and the capillary kit 28 are lightweight, a slide mechanism is not particularly required. It is easy to slide on the substrate 14 by removing a fixing tool such as a bolt for fixing them to the substrate 14. Therefore, a special slide mechanism is not provided like the compressor 15 and the gas cooler 20.

  When performing maintenance work on the water supply pump 22 or the capillary kit 28, the shielding panel 58 in the vicinity of these devices is removed. Next, the fixture that fixes the water supply pump 22 or the capillary kit 28 is removed to make it unfixed. Next, these devices are slid out of the housing for maintenance and inspection.

According to the present embodiment, main equipment such as the compressor 15, the gas cooler 20, the water supply pump 22, and the capillary kit 28 constituting the water heater 10 can be transported out of the housing 12 for maintenance and inspection work. Therefore, maintenance inspection work can be easily performed.
Further, since the air heat source heat exchanger 40 is formed in a panel shape and the side wall of the housing 12 is formed by the air heat source heat exchanger 40, the volume of the housing 12 can be made compact and the air heat source heat exchanger 40 can be made compact. However, the height of the housing 12 can be reduced because it does not interfere with the arrangement of the compressor 15 and the gas cooler 20 which are large and heavy heavy objects. Furthermore, since the air heat source heat exchanger 40 is supported by the rectangular base frame 74, the support strength can be increased.

  Further, the air outlet 46 is provided on the upper surface 12a of the housing 12, and the air outlet fan 48 is provided at the air outlet 46, so that the space in the housing 12 can be effectively used as an air flow path and flows from the side of the housing. In addition, it is possible to form an air flow path without a detour flow path that flows out from the upper surface of the housing, and to reduce the pressure loss of the air flow path. Further, no special space for the air outlet fan 48 is required in the housing 12, and the space of the housing 12 can be saved.

Further, since the casing 114 of the compressor 15 is fixed to the gantry 118 via the vibration isolating plate 134 and the vibration isolating rubber 136, the vibration of the compressor 15 can be prevented from being transmitted to the substrate 14, and the gantry 118 can be By fixing to the board | substrate 14 via the low friction stand 124 and 126, the compressor 15 can slide on the board | substrate 14 easily, and the carrying out of the housing 15 of the compressor 15 becomes easy.
Further, the gas cooler 20 can be carried out of the housing by a low-cost slide mechanism in which the round bar 142 is fixed to the lower surface of the casing 21 of the gas cooler 20.

The air heat source heat exchanger 40 includes a large number of heat collecting fins 42 arranged in parallel with an interval i, and a refrigerant circulation heat exchange tube group 44 penetrating the heat collecting fins 42. Since the air flow passage is formed between the heat collection fins 42, the heat exchange area between the refrigerant circulation heat exchange tube group 44 and the air can be expanded, and the heat exchange efficiency can be improved.
Moreover, in this embodiment, since the refrigerant is CO ₂ and the heat pump cycle in which CO ₂ is in a supercritical state on the outlet side of the compressor 15 is configured, the gas cooler 20 can be used for a wide range of high-temperature water exceeding 90 ° C. Can be manufactured with high efficiency.

  In this embodiment, since only the upper surface of the soundproof case 16 surrounding the compressor 15 can be opened and closed, and the shield panel 62 located above the compressor 15 can be opened and closed, the shield panel 62 and the soundproof case By opening the upper surface of 16, maintenance and inspection can be performed while the compressor 15 is fixed in the housing 12.

Further, according to the present embodiment, since the basic structure 70 having a simple configuration including the base 72 and the substrate 14 in which the cross beam 76 and the vertical beam 78 are arranged to intersect each other is sufficient, the construction is easy and the cost is low. Become.
In addition, both end portions 86 of the stringer 78 are protruded outward from the substrate 14, and the upper wall 78 a is provided with a concave groove 98, and the anchor bolts 112 are constructed on the both end portions 86. Easy to install.

In addition, since the holes 94 and 96 are provided in the side walls 78b and 78c of the both ends 86, and the unloading tool such as the unloading sling belt 92 can be attached to the holes, the hot water heater 10 can be easily lifted and transported. .
In the present embodiment, the intervals between the stringers 78 are set to be equal intervals, but the intervals between the stringers 78 may be set to be unequal intervals depending on the weight distribution applied to the base surface f.
In this embodiment, the rectangular base frame 74 is formed by bending the four corners of the substrate 14. However, the square foundation frame 74 may be manufactured separately from the substrate 14 and fixed to the lower four corners of the substrate 14.

  ADVANTAGE OF THE INVENTION According to this invention, while saving the space of the water heater housing which has an air heat source evaporator, the maintenance inspection of the component apparatus in a housing can be made easy.

DESCRIPTION OF SYMBOLS 10 Water heater 12 Housing 14 Substrate 15 Compressor 16 Soundproof case 18 Power control panel 20 Gas cooler 22 Water supply pump 24 Supercritical tank 28 Capillary kit 30, 31, 34, 36, 38 Post 40 Air heat source heat exchanger (air heat source evaporator) )
42 Heat Collection Fins 44 Heat Exchange Tubes for Refrigerant Distribution 46 Air Outlet Ports 48 Air Outlet Fans 50, 52 Birdproof Nets 54, 56, 58, 60, 62, 64, 66, 106 Shield Panel 70 Basic Structure 72 Base 74 Square base frame 76 Horizontal girder 78 Vertical girder 86 Tip 88 88 Anti-vibration plate 92 Unloading sling belt 94, 96 Hole 98 Recess 100 Sheet metal 116, 140 Stay 118 Mounting 120, 122 Case 124, 126 Low friction stand 134 Anti-vibration Board 136 Anti-vibration rubber 142 Round bar

Claims (5)

A heat pump cycle including a compressor, a gas cooler, an expander, and an air heat source evaporator in which a refrigerant for hot water supply circulates;
A housing containing the heat pump cycle and having an air inlet on the side and an air outlet on the upper surface;
In the water heater provided with a blower that forms an air flow that flows from the air suction port to the air discharge port through the air heat source evaporator in the housing.
The compressor and the gas cooler are fixed on the substrate in the housing, and a slide mechanism that allows the compressor and the gas cooler to slide out of the housing in an unfixed state is provided.
The hot water heater is characterized in that the air heat source evaporator is formed in a panel shape with the air suction port interposed to form at least a part of a side wall of the housing.   The slide mechanism of the compressor is composed of a concave portion disposed opposite to the substrate at a lower portion of the compressor, and a low friction material having a slide surface that is fitted and fixed to the concave portion and contacts the substrate. The water heater according to claim 1.   2. The water heater according to claim 1, wherein the slide mechanism of the gas cooler includes a plurality of guide bars fixed to the bottom surface of the gas cooler in the gas cooler slide direction.   The air heat source evaporator includes a large number of heat collecting fins arranged in parallel with a space between each other, and a heat exchange pipe group for refrigerant circulation penetrating the heat radiating fins with a space therebetween, The hot water heater according to claim 1, wherein an air flow passage is formed between the heat collecting fins and between the heat exchange pipe groups for circulating the refrigerant. The water heater according to claim 1, wherein the refrigerant is CO ₂ and constitutes a heat pump cycle in which CO ₂ is in a supercritical state on the outlet side of the compressor.

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