JP7450808B2 - heat pump water heater - Google Patents

Description

The present disclosure relates to a heat pump water heater.

Conventional heat pump water heaters use well-known insulation locks to secure the piping. For example, Patent Document 1 describes a heat exchange section in which a winding section in which a refrigerant pipe through which a refrigerant for heat exchange flows is spirally wound is stacked in multiple stages, and is arranged between each winding section. A heat exchanger is shown that includes a heat insulating plate and a tightening member that is wrapped around the outer tube of each winding portion and tightens the outer tubes of each winding portion together with the heat insulating plate. The tightening member described in Patent Document 1 is made of an insulok formed in a band shape, and one end is locked by wrapping it around the outer tube of each winding part and inserting one end into the locking hole of the other end. It has a structure that locks into the hole and maintains the wrapped state.

Japanese Patent Application Publication No. 2010-112650

Conventional heat pump water heaters have a problem in that when piping is stacked and fixed in multiple stages using well-known insulation locks as in Patent Document 1, a load is applied to the piping due to the insulation lock tightening force, causing the piping to shift.

Instead of Insulok, it is possible to fix the pipes stacked in multiple stages using sheet metal combined, but due to the clearance required during assembly, the screws that secure the sheet metal may loosen due to vibration during transportation after assembly. There is a problem. Furthermore, it is necessary to assemble the metal sheets together using fixing screws, which poses a problem in that workability when fixing the piping is impaired.

The present disclosure has been made in view of the above problems, and an object of the present disclosure is to provide a heat pump water heater that can suppress displacement of piping and loosening of fixing screws without impairing workability when piping is stacked in multiple stages and fixed. is one of the objectives.

One embodiment of the heat pump water heater of the present disclosure includes a refrigeration cycle circuit having a compressor, a condenser, an expansion mechanism, an evaporator, and refrigerant piping that sequentially connects these, and water to be heat exchanged by the refrigeration cycle. A water circuit to which water piping is connected, a housing that houses the refrigeration cycle circuit and the water circuit, and the water piping extending in a first direction is stacked in multiple stages in a second direction perpendicular to the first direction. a pipe fixing part fixed to the casing, the pipe fixing part fixing the water pipe to the casing on a first side in a third direction orthogonal to the first direction and the second direction. a first fixing part fixed to the water pipe; and a second fixing part fixed to the casing on a second side in the third direction with respect to the water pipe, the first fixing part being fixed to the water pipe. a first side plate disposed on the first side of the piping along the second direction and having one end in the second direction fixed to the casing; a top plate located on the other side in the second direction from the piping and extending from the other end of the first side plate in the second direction to the second side; and a top plate provided on the second side of the top plate. and a claw portion that is hooked on the second fixing portion from the second side, the second fixing portion being disposed along the second direction on the second side of the water pipe and the second fixing portion being hooked on the second fixing portion from the second side. a second side plate having one side end fixed to the housing, the second side plate having an insertion hole into which the claw portion is inserted, and the insertion hole is connected to the first hole. and a second hole connected to the first hole in the first direction, and the first hole has a minimum width in the first direction equal to the maximum width of the claw in the first direction. the minimum width in the second direction is wider than the maximum width in the second direction of the claw portion, and the minimum width in the second direction of the second hole is wider than the second width of the first hole. Narrower than the minimum width in the direction.

According to one aspect of the present disclosure, in a heat pump water heater, pipes stacked in multiple stages can be fixed without shifting without impairing workability.

It is an external perspective view of a heat pump water heater in an embodiment. FIG. 2 is an external perspective view of the heat pump water heater of FIG. 1 with a design panel removed. FIG. 3 is an enlarged external perspective view from the left side of the water circuit in FIG. 2. FIG. FIG. 3 is a perspective view of the appearance around the piping fixing part. 3 is a partial cross-sectional view orthogonal to the depth direction Y at the center position of the claw portion 13 in the depth direction Y. FIG. It is a partially enlarged view of the upper side of the second side plate viewed from the right side. It is an external perspective view of the piping fixing part seen from the left side in the width direction.

Hereinafter, a heat pump water heater according to an embodiment of the present disclosure will be described with reference to the drawings.
Note that the scope of the present disclosure is not limited to the following embodiments, and can be arbitrarily modified within the scope of the technical idea of the present disclosure. Further, in the following drawings, in order to make each structure easier to understand, the scale and number of each structure may be different from the scale and number of the actual structure.

FIG. 1 is an external perspective view of a heat pump water heater 1 in this embodiment.
FIG. 2 is an external perspective view of the heat pump water heater 1 shown in FIG. 1 with design parts removed.

As shown in FIG. 1, the heat pump water heater 1 has a rectangular parallelepiped shape that extends in the vertical direction. The heat pump water heater 1 includes a housing 2, a refrigeration cycle circuit 3, and a water circuit 6.

The housing 2 constitutes the outer shell of the heat pump water heater 1 . The housing 2 houses a refrigeration cycle circuit 3 and a water circuit 6. The housing 2 includes a base 2a, a base 2b, a front panel 2c, a back panel 2d, a right side panel 2e, a left side panel 2f, and a top panel 2g. The base 2a is located at the bottom of the housing 2. A refrigeration cycle circuit 3 is mounted on the base 2a. The base 2b is located above the base 2a. A water circuit 6 is mounted on the base 2b.

The front panel 2c is provided on the front of the heat pump water heater 1. The back panel 2d is provided on the back of the heat pump water heater 1. The right side panel 2e is provided on the right side of the heat pump water heater 1. The left side panel 2f is provided on the left side of the heat pump water heater 1. The top panel 2g is provided on the top of the heat pump water heater 1.

In the following description of the heat pump water heater 1, directions along the X-axis, Y-axis, and Z-axis shown as appropriate in the drawings will be defined, and each part of the heat pump water heater 1 will be explained using each direction. The direction in which the heat pump water heater 1 extends is called the height direction Z. A direction that is orthogonal to the height direction Z and in which the front panel 2c and the back panel 2d are lined up is called a depth direction Y. This is a direction perpendicular to the height direction Z and the depth direction Y, and the direction in which the right side panel 2e and the left side panel 2f are lined up is called the width direction X.

In the height direction Z, the side where the Z-axis arrow points (+Z side) and the side where the top panel 2g is placed is called the upper side, and the side opposite to the side where the Z-axis arrow points (-Z side) The side on which the base portion 2a is placed is called the lower side. In the depth direction Y, the side where the Y-axis arrow points (+Y side), the side where the front panel 2c is placed is called the front side, and the side opposite to the side where the Y-axis arrow points (-Y side), The side on which the back panel 2d is arranged is called the back side. In the width direction , the side on which the left side panel 2f is arranged is called the left side. The side facing the center of the heat pump water heater 1 in the depth direction Y is called the inner side in the depth direction, and the side opposite to the center of the heat pump water heater 1 is called the outer side in the depth direction. The side facing the center of the heat pump water heater 1 in the width direction X is called the inner side in the width direction, and the side opposite to the center of the heat pump water heater 1 is called the outer side in the width direction.

Although not shown, the refrigeration cycle circuit 3 includes a refrigerant circuit including a compressor, a condenser, an expansion mechanism, an evaporator, and refrigerant pipes that sequentially connect these components. The refrigeration cycle circuit 3 is mounted on the base 2a of the housing 2. As the refrigerant flowing through the refrigeration cycle circuit 3, for example, refrigerants such as R32, fluorocarbon, and carbon dioxide are used.

The compressor sucks in low-temperature, low-pressure refrigerant, compresses the sucked refrigerant, and discharges high-temperature, high-pressure refrigerant. The compressor is, for example, an inverter compressor or the like whose capacity, which is the amount of output per unit time, is controlled by changing the operating frequency. The condenser exchanges heat between the refrigerant flowing through the refrigeration cycle circuit 3 connected to the refrigerant side flow path and the hot water flowing through the boiling circuit connected to the water side flow path, converting the heat of the refrigerant into water. Dissipates heat and condenses the refrigerant.

The expansion mechanism expands the refrigerant flowing out of the condenser. The expansion mechanism is configured with a valve whose opening degree can be controlled, such as an electronic expansion valve, for example. The evaporator exchanges heat between outdoor air supplied by a blower or the like (not shown) and a refrigerant. The evaporator evaporates the refrigerant and uses the heat of evaporation to cool the outdoor air.

The water circuit 6 has a water pipe 4 and a hot water tank 5. The water circuit 6 is mounted on the base 2b.
FIG. 3 is an enlarged external perspective view of the water circuit 6 from the left side in FIG. 2. As shown in FIG.
As shown in FIG. 3, the water pipe 4 allows water to be heat exchanged by the refrigeration cycle circuit 3 to flow therethrough. The water pipe 4 is connected to the refrigeration cycle circuit 3 and the hot water tank 5. The water pipe 4 is fixed to the base 2b by a pipe fixing part 9 via a cushioning material 8.

FIG. 4 is an external perspective view of the vicinity of the pipe fixing part 9.
As shown in FIG. 4, the pipe fixing part 9 stacks the water pipes 4 in multiple stages and fixes them to the base 2b. The pipe fixing part 9 in this embodiment stacks the water pipes 4 extending in the depth direction Y in three stages in the height direction Z and fixes them to the base 2b.

In this embodiment, the depth direction Y corresponds to a "first direction," the height direction Z corresponds to a "second direction," and the width direction X corresponds to a "third direction." In this embodiment, the left side corresponds to the "first side in the third direction" and the right side corresponds to the "second side in the third direction." In this embodiment, the lower side corresponds to "one side in the second direction" and the upper side corresponds to "the other side in the second direction." Note that the height direction, depth direction Y, and width direction X are simply names for explaining the arrangement relationship of each part, and the actual arrangement relationship etc. are not limited by these names.

The piping fixing part 9 has a first fixing part 10 and a second fixing part 20 fixed to the base 2b. The base 2b has a side surface 31 and a bottom surface 32. The side surface 31 extends upward from the edge of the bottom surface 32. The first fixing part 10 is fixed to the side surface 31 of the base part 2b on the left side of the water pipe 4. The second fixing part is fixed to the bottom surface 32 of the base part 2b on the right side of the water pipe 4. The first fixing part 10 and the second fixing part 20 are each made of a sheet metal.

The first fixing portion 10 includes a first side plate 11 , a top plate 12 , and a claw portion 13 . The first side plate 11 is arranged on the left side of the water pipe 4 along the height direction Z. The first side plate 11 has a flat plate shape orthogonal to the width direction X. As shown in FIG. 7, the first side plate 11 is fixed to the side surface 31 of the base 2b by screwing fixing screws 31a into screw holes 11a provided at the lower end.

The top plate 12 extends from the upper end of the first side plate 11 to the right side. The upper surface plate 12 is located above the uppermost water pipe 4 in the height direction Z.

The claw portion 13 is provided on the right side of the right end portion of the top plate 12. The center position of the claw portion 13 in the depth direction Y is located at the center of the top plate 12. FIG. 5 is a partial cross-sectional view orthogonal to the depth direction Y at the center position of the claw portion 13 in the depth direction Y. FIG. As shown in FIGS. 4 and 5, the claw portion 13 has a projecting portion 14 and a bent portion 15. As shown in FIGS. The width of the overhanging portion 14 in the depth direction Y is the same as the width of the bent portion 15 in the depth direction Y. The projecting portion 14 projects from the right end of the top plate 12 to the right. The length by which the projecting portion 14 projects to the right from the right end of the top plate 12 is greater than the thickness of the second side plate 22, which will be described later. The bent portion 15 extends downward from the right end of the overhang portion 14 . Therefore, the bent portion 15 is located on the right side of the second side plate 22. The bent portion 15 is hooked onto the second side plate 22 of the second fixing portion 20 from the right side.

The second fixing part 20 includes a lower plate 21 and a second side plate 22. The lower surface plate 21 has a flat plate shape orthogonal to the height direction Z. The lower plate 21 is fixed to the bottom surface 32 of the base 2b from above. The second side plate 22 extends upward from the right end of the lower plate 21. The second side plate 22 is arranged on the right side of the water pipe 4 along the height direction Z. The second side plate 22 faces the first side plate 11 with the water pipe 4 in between. The second side plate 22 has a planar shape parallel to the first side plate 11. The lower end of the second side plate 22 is fixed to the bottom surface 32 of the base 2b via the lower plate 21.

The second side plate 22 has an insertion hole 23. The claw portion 13 is inserted into the insertion hole 23 . The insertion hole 23 has a first hole 24 and a second hole 25. FIG. 6 is a partially enlarged view of the upper side of the second side plate 22 viewed from the right side. As shown in FIG. 6, the first hole 24 has a rectangular shape. The center position of the first hole 24 in the depth direction Y is on the front side of the center position of the second side plate 22 in the depth direction Y.

When the second fixing section 20 is fixed to the bottom surface 32 of the base 2b, the shortest distance in the height direction Z from the bottom surface 32 to the first hole 24 is longer than the maximum length of the first fixing section 10 in the height direction Z. It's also long. That is, the maximum length of the first fixing part 10 in the height direction Z is shorter than the shortest distance in the height direction Z from the bottom surface 32 to the first hole part 24.

The minimum width of the first hole 24 in the depth direction Y is wider than the maximum width of the claw part 13 in the depth direction Y. The first hole portion 24 has a minimum width in the height direction Z that is wider than a maximum width of the claw portion 13 in the height direction Z. Therefore, the claw portion 13 can be inserted into the first hole portion 24 from the left side without reducing workability.

The second hole 25 is connected to the first hole 24 in the depth direction Y. The width of the gap at the position where the first hole 24 and the second hole 25 are connected is wider than the thickness of the overhang 14. The second hole 25 is located on the rear side of the first hole 24 . The center position of the second hole 25 in the depth direction Y is the center position of the second side plate 22 in the depth direction Y. The minimum width of the second hole 25 in the height direction Z is narrower than the minimum width of the first hole 24 in the height direction Z, and wider than the thickness of the overhang 14 .

Therefore, after inserting the claw part 13 into the first hole part 24 from the left side without fixing the first fixing part 10 to the base part 2b, the claw part 13 is inserted into the second hole part 25 by moving it to the rear side. be able to. Furthermore, by making the minimum width of the second hole 25 in the height direction Z narrower than the minimum width of the first hole 24 in the height direction Z, the claw 13 inserted into the second hole 25 and the second The gap between the side plate 22 and the height direction Z can be reduced. Thereby, the amplitude during transportation of the heat pump water heater 1 is reduced, and loosening of the screws that fix the first fixing part 10 and the second fixing part 20 to the base part 2b can be suppressed.

Further, the maximum width of the second hole portion 25 in the height direction Z is narrower than the maximum width of the bent portion 15 in the height direction Z. Therefore, the bent portion 15 of the claw portion 13 inserted from the first hole portion 24 to the second hole portion 25 is caught on the second side plate 22 from the right side. This makes it impossible for the claw portion 13 to be removed from the second hole portion 25 to the left.

The lower end 25a of the second hole 25 is located below the lower end 24a of the first hole 24. The minimum width of the first hole 24 in the depth direction Y is wider than the minimum width of the second hole 25 in the depth direction Y. The minimum width of the second hole portion 25 in the depth direction Y is wider than the maximum width of the claw portion 13 in the depth direction Y. Therefore, the protruding portion 14 of the claw portion 13 can be fitted into the second hole portion 25 in the depth direction Y. By locating the lower end 25 a of the second hole 25 below the lower end 24 a of the first hole 24 , the front side of the second hole 25 is located below the second hole 25 . A wall connecting the side end 25a and the lower end 24a of the first hole 24 is formed. Since the wall connecting the lower end 25a and the lower end 24a is formed on the front side of the second hole 25, the overhang 14 of the claw 13 inserted into the second hole 25 can be attached to the front side. Movement to is regulated.

In other words, the bent portion 15 of the claw portion 13 inserted into the second hole portion 25 is caught on the second side plate 22 in the width direction X, the amplitude is suppressed in the height direction Z, and the claw portion 13 is moved in the depth direction Y. is regulated. Therefore, the amplitude during transportation of the heat pump water heater 1 is reduced, and loosening of the screws that fix the first fixing part 10 and the second fixing part 20 to the base part 2b can be effectively suppressed.

As shown in FIG. 6, the second hole 25 has the widest width in the height direction Z at the point where it connects with the first hole 24, and the width at the rear end farthest from the first hole 24. The width in the height direction Z is the narrowest. Specifically, the lower end 25a of the second hole 25 extends in the depth direction Y. The upper end 25b of the second hole 25 gradually slopes downward as it moves away from the first hole 24 in the depth direction Y.

FIG. 7 is an external perspective view of the piping fixing part 9 viewed from the left side in the width direction X. In FIG. 7, illustration of the water pipe 4 is omitted.
By gradually tilting the lower end 25a downward as it moves away from the first hole 24 in the depth direction Y, after inserting the claw 13 into the first hole 24 from the left side, 7, the first fixing portion 10 is rotated and tilted around the axis J extending in the width direction X (counterclockwise in FIG. 7). As shown in FIG. 6, the angle at which the first fixing part 10 is rotated may be such that the inclination of the overhang part 14 is the same as the inclination of the upper end part 25b of the second hole part 25.

Next, with the overhang 14 tilted at the same angle as the inclination of the upper end 25b in contact with the upper end 25b, the first fixing portion is moved so that the overhang 14 follows the direction shown by the arrow in FIG. 10 toward the rear and bottom. When the overhanging portion 14 contacts the rear end of the second hole portion 25, the tilted first fixing portion 10 is returned to the original orientation in which the overhanging portion 14 extends in the depth direction Y.

As a result, the overhanging portion 14 contacts the lower end 25a of the second hole 25 and is fitted into the second hole 25 in the depth direction Y, thereby defining the position of the first fixing portion 10 in the depth direction Y. . In this embodiment, by making the maximum length of the first fixing part 10 in the height direction Z shorter than the shortest distance in the height direction Z from the bottom surface 32 to the first hole part 24, the first fixing part 10 can be fixed. By rotating the part 10 around the axis J, the claw part 13 can be inserted from the first hole part 24 into the second hole part 25 and fixed in a fixed position. Therefore, in this embodiment, the piping fixing part 9 can be easily assembled and work efficiency is improved.

When the projecting portion 14 is fitted into the second hole portion 25 in the depth direction Y, as shown in FIGS. 4 and 5, the bent portion 15 is located on the right side of the second side plate and is caught. The position of the first fixing portion 10 in the width direction X is defined. In this state, the fixing screw 31a is screwed into the screw hole 11a of the first side plate 11 to fix the first side plate 11 to the side surface 31 of the base 2b. By fixing the first side plate 11 to the base portion 2b, the position of the first fixing portion 10 in the height direction Z is defined.

Therefore, as shown in FIG. 4, in the pipe fixing part 9, there is a first side plate 11 that straddles the water pipes 4 stacked in three tiers and holds the left side, and a first side plate 11 that straddles the water pipes 4 stacked in three tiers and holds the left side. The second side plate 22 holds the right side of the wall, the top plate 12 holds the upper side of the water pipe 4 located at the uppermost side, and the lower plate 21 holds the lower side of the water pipe 4 located at the lowermost side. Three stages of water piping 4 can be fixed without shifting between them.

As explained above, according to the present embodiment, the first fixing part 10 has the claw part 13, the second fixing part 20 has the first hole part 24 and the second hole part 25, and the second fixing part 20 has the first hole part 24 and the second hole part 25. The minimum width in the depth direction Y of the first hole 24 is wider than the maximum width in the depth direction Y of the claw part 13, the minimum width in the height direction Z is wider than the maximum width in the height direction Z of the claw part 13, and the second hole The minimum width of the portion 25 in the height direction Z is narrower than the minimum width of the first hole portion 24 in the height direction Z. Therefore, the claw portion 13 can be easily inserted into the second hole portion 25 through the first hole portion 24, and the gap in the height direction Z between the claw portion 13 fixed to the second hole portion 25 can be reduced. As a result, while the three-stage water pipe 4 is fixed without shifting, the amplitude in the height direction Z during transportation of the heat pump water heater 1 is reduced, and the first fixing part 10 and the second fixing part 20 are fixed to the base 2b. The loosening of screws can be suppressed.

Further, according to the present embodiment, the lower end 25a of the second hole 25 is located below the lower end 24a of the first hole 24, and The minimum width of Y is the same as the maximum width of the claw portion 13 in the depth direction Y. Therefore, movement of the claw portion 13 inserted into the second hole portion 25 in the depth direction Y can be restricted. Thereby, the amplitude in the depth direction Y during transportation of the heat pump water heater 1 is reduced, and loosening of the screws that fix the first fixing part 10 and the second fixing part 20 to the base part 2b can be effectively suppressed.

Further, according to the present embodiment, the lower end 25a of the second hole 25 extends in the depth direction Y, and the upper end 25b of the second hole 25 extends in the depth direction Y from the first hole 24. It gradually slopes downward as it moves away from the ground. Therefore, the claw portion 13 inserted into the first hole portion 24 can be easily inserted into the second hole portion 25 while being guided by the upper end portion 25b. Thereby, workability when inserting the claw portion 13 into the second hole portion 25 can be improved.

Further, according to the present embodiment, the second fixing part 20 is fixed to the bottom surface 32 of the base 2b, and the first fixing part 10 is fixed to the side surface 31 of the base 2b. Therefore, the operation of inserting the claw portion 13 into the first hole 24 and the second hole 25 and fixing the first side plate 11 to the side surface 31 can be performed closer to the operator. Thereby, the work of fixing the water pipe 4 by the pipe fixing part 9 becomes easier, and the workability is improved.

Although preferred embodiments according to the present disclosure have been described above with reference to the accompanying drawings, it goes without saying that the present disclosure is not limited to such examples. The various shapes, combinations, etc. of the constituent members shown in the above-mentioned examples are merely examples, and can be variously changed based on design requirements and the like without departing from the gist of the present disclosure.

For example, in the above embodiment, the water pipes 4 are stacked in three stages in the height direction Z, but they may be stacked in two stages or four or more stages.

In the above embodiment, the configuration in which the water pipes 4 are stacked in multiple stages in the height direction Z is illustrated, but the structure is not limited to this, and a configuration in which the water pipes 4 are stacked in multiple stages in the depth direction Y or width direction X may be used. .

1 heat pump water heater, 2 housing, 2b base, 3 refrigeration cycle circuit, 4 water piping, 5 hot water tank, 6 water circuit, 9 piping fixing part, 10 first fixing part, 11 first side plate, 12 top plate, 13 claw portion, 20 second fixing portion, 22 second side plate, 23 insertion hole, 24 first hole portion, 25 second hole portion, 31 side surface, 32 bottom surface

Claims (6)

A refrigeration cycle circuit having a compressor, a condenser, an expansion mechanism, an evaporator, and refrigerant piping that sequentially connects these;
a water circuit connected to water piping that circulates water to be heat exchanged by the refrigeration cycle circuit;
a casing that houses the refrigeration cycle circuit and the water circuit;
a pipe fixing part that stacks the water pipes extending in a first direction in multiple stages in a second direction perpendicular to the first direction and fixes them to the casing;
Equipped with
The piping fixing part is
a first fixing part fixed to the casing on a first side in a third direction perpendicular to the first direction and the second direction with respect to the water pipe;
a second fixing part fixed to the casing on a second side in the third direction with respect to the water pipe;
has
The first fixing part is
a first side plate disposed on the first side of the water pipe along the second direction and having one end in the second direction fixed to the casing;
an upper surface plate located on the other side in the second direction than the water pipe on the other side in the second direction and extending from the other end of the first side plate in the second direction to the second side; ,
a claw portion provided on the second side of the top plate and hooked onto the second fixing portion from the second side;
has
The second fixing part is
a second side plate disposed along the second direction on the second side of the water pipe and having one end in the second direction fixed to the casing;
The second side plate has an insertion hole into which the claw portion is inserted,
The insertion hole is
a first hole;
a second hole connected to the first hole in the first direction;
has
The first hole has a minimum width in the first direction that is wider than a maximum width of the claw in the first direction, and a minimum width in the second direction that is wider than a maximum width of the claw in the second direction. ,
In the heat pump water heater, the minimum width of the second hole in the second direction is narrower than the minimum width of the first hole in the second direction. One end of the second hole in the second direction is located on one side of the second direction than the one end of the first hole in the second direction.
The heat pump water heater according to claim 1. The minimum width of the first hole in the first direction is wider than the minimum width of the second hole in the first direction,
The minimum width of the second hole in the first direction is wider than the maximum width of the claw in the first direction,
The claw portion can be fitted into the second hole in the first direction.
The heat pump water heater according to claim 2. One end of the second hole in the second direction extends in the first direction,
The other end of the second hole in the second direction gradually slopes toward one side in the second direction as it moves away from the first hole in the first direction.
The heat pump water heater according to claim 3. The casing has a base on which the water circuit is mounted,
The piping fixing part is provided at the base,
The base has a bottom surface and a side surface extending from an edge of the bottom surface to the other side in the second direction,
the first fixing part is fixed to the side surface of the base;
the second fixing part is fixed to the bottom surface of the base;
The heat pump water heater according to any one of claims 1 to 4. The maximum length of the first fixing part in the second direction is shorter than the shortest distance from the bottom surface to the first hole when the second fixing part is fixed to the bottom surface.
The heat pump water heater according to claim 5.

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