JP5500725B2 - Heat pump type heat source machine - Google Patents

Description

  The present invention relates to a heat pump type heat source used in a hot water supply apparatus, an air conditioner, a refrigeration apparatus, and the like.

  For example, in a heat pump type heat source device 100 that circulates and supplies hot water of a predetermined temperature to a hot water tank or the like, a heat pump cycle is incorporated in a rectangular parallelepiped casing 101 as shown in FIGS. 13 (a) and (b). Is. That is, a compressor 103 that compresses the refrigerant, a water heat exchanger 104 that performs heat exchange between water and the refrigerant, and an expansion valve 105 that expands the refrigerant are housed in the lower part of the housing 101. In addition, a pair of air heat exchangers 106 and 106 and a blower 107 that are parallel to each other are disposed on the top of the housing 101.

  There are cases where a plurality of such heat source devices 100 are used in combination depending on the output capability. Thus, when a plurality of heat source devices 100 are installed, how air that passes through the air heat exchangers 106 and 106 contributes to heat exchange is important in terms of improving heat exchange efficiency. is there.

  Therefore, in the current situation, the heat source devices 100 are installed with a predetermined interval so that the air sucked from the blower 107 can be easily taken in from the parallel side surfaces of the housing. As described above, when the heat source devices 100 are installed with a predetermined interval, the installation space is increased, and the installation location is limited.

  Therefore, even when a plurality of heat source devices are arranged adjacent to each other, a heat source device devised to prevent a decrease in heat exchange capability of the heat exchanger is known. As shown in FIG. 14, the heat source apparatus 100 includes water heat exchangers 106 and 106 arranged in a V-shape on the upper part of a lower casing 101 </ b> A that is rectangular in front view.

  However, in the heat source apparatus 100 shown in FIG. 14, since both ends of the lower casing 101A protrude from the lower part of the heat exchangers 106 and 106, the velocity distribution of the air passing through the heat exchangers 106 and 106 is deteriorated. There was a problem to do. In other words, both ends of the lower casing 101A are obstructed by the air passing through the lower portions of the heat exchangers 106 and 106, and there is a drawback that air is liable to stay. As a result, the lower part of the heat exchanger tends to have lower heat exchange efficiency than the upper part.

  In view of this, a heat source apparatus that prevents deterioration of the air velocity distribution when a plurality of heat source apparatuses 100 are provided has been proposed (see, for example, Patent Document 1).

  In such a heat source machine, the housing has an X shape (constricted drum shape) in front view and back view. That is, the housing is provided continuously on the lower surface of the heat exchange chamber and the heat exchange chamber formed with the air suction ports on both side surfaces and inclined so as to reduce the width of the both side surfaces downward, The machine room is formed by inclining so that the widths of both side surfaces expand downward. In the heat exchange chamber, a pair of air heat exchangers are attached in a V shape.

JP 2007-163017 A

  Since the heat source device described in Patent Document 1 has a drum shape with a constricted casing, when a plurality of drum-shaped heat source devices are provided side by side, there is a diamond-shaped space between both heat source devices. Since it is formed, it is possible to take air from this space into the enclosure.

  However, since the machine room has a shape in which the widths of both side surfaces are expanded downward, the machine rooms are close to each other toward the lower side. Accordingly, there has been a problem that a sufficient work space cannot be secured during maintenance and inspection work for the heat pump components housed in the machine room, making maintenance and inspection work for the heat pump components difficult.

  The present invention has been made in view of the above points, and provides a heat pump type heat source apparatus that can improve the heat exchange efficiency of an air heat exchanger and can easily perform maintenance and inspection work on heat pump components. For the purpose.

The solution provided by the present invention is a heat pump heat source apparatus in which heat pump components such as a heat exchanger for air, a blower, a compressor, and a heat exchanger are housed in a housing . comprising an upper housing width both left and right sides downward are formed to be inclined so as to reduce, and a lower housing which is provided continuously to the upper housing bottom surface, the heat exchanger for the air Are provided on both the left and right sides of the upper casing, and the blower is configured such that air sucked from both the left and right sides of the upper casing passes through the air heat exchanger and is discharged from the upper casing. Provided in the upper casing, the compressor and the heat exchanger are provided in the lower casing, and the lower casing is formed in a rectangular parallelepiped shape in which a front shape and a rear shape are rectangular , width length of the left and right direction of the lower housing, the upper Is set equal to the width length of the left and right direction of the housing bottom surface, the difference between the width length of the lateral width length in the lateral direction and the lower housing of the upper housing upper surface, is set to at least 400 mm, the lower The length dimension in the vertical direction of the casing is set to be larger than the width in the horizontal direction of the lower casing .

  Further, a plurality of the heat pump type heat source devices are installed.

  Even if the heat source device of the present invention is installed with the upper portions of the heat source devices being in contact with each other, a space can be formed between the two due to the structure thereof, so that an air intake space can be secured between the heat source devices. Further, since the difference between the width of the upper housing and the width of the lower housing is set to 400 mm or more, a sufficient space for an operator to enter between the heat source machines can be secured. As a result, this space can be used to easily and quickly perform maintenance and inspection work for the heat pump components housed in the lower housing.

In addition, the width length of the upper housing in the left-right direction and the width length of the lower housing in the left-right direction are the lengths in the direction in which the heat source devices are provided, and are the maximum lengths in the respective width directions. Therefore, when a plurality of heat pump type heat source machines are installed, the interval between the lower housings of each heat source machine can be set to 400 mm or more.

The present invention contains a heat pump component device such as a heat exchanger for air, a blower, a compressor and a heat exchanger in a housing, and in the heat pump type heat source device used to install a plurality of the heat pump devices , comprising an upper housing width both left and right sides downward are formed to be inclined so as to reduce the front view, and a lower housing member provided continuously to the upper housing bottom surface, the air The heat exchanger is provided on both the left and right sides of the upper casing, and the air blown from the left and right sides of the upper casing passes through the air heat exchanger and is discharged from the upper casing. As described above, the compressor and the heat exchanger are provided in the lower casing, and the lower casing is formed in a rectangular parallelepiped shape in which the front shape and the rear shape are rectangular. is, the lateral width of the lower housing , The set equal to the width dimension in the lateral direction of the upper housing bottom surface, vertical length of the lower housing is set larger than the width length in the lateral direction of the lower housing, the lower The space between the housings is set to a certain value or more.

  The present invention can improve the heat exchange efficiency of the air heat exchanger and can easily perform maintenance and inspection work on the heat pump components.

It is a perspective view showing the state where a plurality of heat pump type heat source units according to an embodiment of the present invention are provided. It is a front view showing the state where a plurality of the heat source machines are provided side by side. It is a front sectional view of the heat source machine. It is side surface sectional drawing of the heat source machine. It is a plane sectional view of the heat source machine. It is a top view of the heat source machine. It is a front view of the heat source machine of this invention used for the wind speed experiment. It is a front view which shows the heat exchanger for air of the heat source machine. (A)-(d) is a figure which shows the result of the wind speed experiment by the heat-source equipment of this invention, respectively. It is a front view of the conventional heat source machine used for the wind speed experiment. It is a front view which shows the heat exchanger for air of the heat source machine. (A) And (b) is a figure which shows the result of the wind speed experiment by the conventional heat source machine, respectively. The conventional heat source machine is shown, (a) is a plane sectional view, (b) is a front sectional view. It is a front view which shows the conventional heat source machine.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIGS. 1-6 shows one Embodiment of the heat-pump-type heat-source apparatus of this invention used for a hot-water supply apparatus and a cold water supply apparatus, for example. In the present embodiment, the heat pump type heat source unit 1 is illustrated as having three units. However, the heat pump type heat source unit 1 can be installed with a plurality of other units such as two units and four units. is there.

  The heat pump type heat source unit 1 is configured by incorporating a heat pump cycle including heat pump components in a housing 2. The housing 2 includes an upper heat exchange chamber (upper housing) 20 and a lower machine chamber (lower housing) 21.

  The lower casing 21 is obtained by attaching front and rear left and right side walls 21b, 21c, and 21d to a rectangular parallelepiped frame 21a. In this lower housing 21, as shown in FIGS. 3 to 5, a compressor 3 for compressing the refrigerant, a water heat exchanger 5 as a heat exchanger for performing heat exchange between water and the refrigerant, and a refrigerant An expansion valve (not shown), an inverter 9, an accumulator 8, and a control box 10 are accommodated.

  As the water heat exchanger 5, for example, a water heat exchanger in which a refrigerant channel and a water channel are formed by winding an inner / outer duplex pipe 5a in a coil shape is adopted. As shown in FIGS. 3 and 5, the water heat exchanger 5 is provided side by side on the side surface of the control box 10. The inner and outer double pipes 5a are provided along the longitudinal direction of the lower casing 21 (the front-rear direction of the lower casing 21). That is, the inner / outer duplex pipe 5a includes a pair of straight portions 5b and 5b along the longitudinal direction of the lower housing 21, and arc portions 5c and 5c that connect both ends of the straight portions 5b and 5b. Thus, by arranging the inner and outer double pipes 5a, the width of the water heat exchanger 5 (interval between the straight portions 5b and 5) can be reduced, so the installation space is reduced.

  As the water heat exchanger 5, a conventionally known one in which a refrigerant flow path and a water flow path are formed by stacking a large number of metal plates can be employed. Since the water heat exchanger 5 is composed of a large number of metal plates, it can be configured in a small size.

  The upper housing 20 is obtained by attaching front and rear walls 20b and 20c and a top wall 20d to a frame 20a. Both side surfaces of the upper housing 20 are provided in an inclined shape (V-shaped) so as to be opened and the width length gradually decreases downward. A pair of air heat exchangers 7 and 7 arranged in a V shape so as to close the openings are attached to both side surfaces.

  Further, a blower 26 made of a fan is provided at an air outlet 25 formed on the top wall 20d of the upper casing 20 and above the air heat exchangers 7 and 7. Therefore, the air sucked from both sides of the upper housing 20 by the blower 26 passes through the air heat exchangers 7 and 7 and is discharged above the upper housing 20.

  As shown in FIG. 2, the width length W2 of the lower casing 21 is set to be shorter than the width length W1 of the top wall 20d of the upper casing 20. Here, the width length W1 of the top wall 20d of the upper housing 20 and the width length W2 of the lower housing 21 are the lengths in the direction in which the heat source device 1 is provided, and are the maximum lengths in the respective width directions. . Further, the lower casing 21 has an equal upper and lower width length W2 and is rectangular in a front view.

  Further, as shown in FIGS. 5 and 6, the upper housing 20 and the lower housing 21 are formed in a rectangular shape in a plan view, and the width W1 of the top wall 20 d of the upper housing 20 and the width of the lower housing 21. The difference from W2 (W1-W2) is set to 400 mm or more (a certain value or more). The lower housing 21 is provided at the center position in the width direction of the upper housing 20.

  In this way, the upper casing 20 is shaped so that the width is narrowed downward, and the width of the lower surface of the upper casing 20 and the width W2 of the upper surface of the lower casing 21 are set to be equal to each other. The body 2 is Y-shaped in front view and back view.

  In the present embodiment, the short sides of the upper casing 20 and the lower casing 21 are illustrated as having a width, and the air heat exchangers 7 and 7 are disposed on the long sides of the upper casing 20, Conversely, the long sides of the upper housing 20 and the lower housing 21 may be wide, and the air heat exchangers 7 and 7 may be disposed on the short side of the upper housing 20.

  And the upper edge part of the upper housing | casing 20 of the heat pump type heat source machine 1 which mutually adjoins is contacting or approaching, and the space | interval L3 of the lower housings 21 is set to 400 mm or more. Thus, by setting the interval L3 of the lower casing 21 to 400 mm or more, maintenance and inspection work of heat pump components such as the compressor 3 and the water heat exchanger 5 housed in the lower casing 21 are performed. An optimum space (space) K is secured for an operator to enter between the housings and to draw out the lower housing 21 from the heat pump components.

  The heat pump type heat source device 1 of the present embodiment has the above configuration, and next, a case where the heat source device 1 is used will be described.

  First, when water is heated by the water heat exchanger 5 (when used in a hot water supply device), the blower 26 absorbs heat from the atmosphere, collects atmospheric heat in the air heat exchanger 7, and transfers heat to the refrigerant. The refrigerant that has reached a high temperature is compressed by the compressor 3 to a higher temperature. The heat of the refrigerant having reached a high temperature is transferred to water by the water heat exchanger 5 to boil the hot water. The refrigerant that has lost heat is sent to the air heat exchanger 7 again through the expansion valve.

  Next, when water is cooled by the water heat exchanger 5 (when used in a cold water supply device), a four-way valve (not shown) is switched so that the refrigerant compressed by the compressor 3 can exchange heat for each air. Flows into the vessel 7. On the other hand, the air sucked from the side of the housing 2 is heated by exchanging heat with the high-temperature refrigerant flowing through the air heat exchanger 7 by the function of the blower 26 and passing through the air heat exchanger 7. Discharged outside.

  As described above, in any case where hot water is supplied by the heat source unit 1 or cold water is supplied, the space K is secured between the heat source units 1, so that the heat source unit 1 becomes an obstacle. The air can be sufficiently taken into the heat exchanger 7 for air through the space K smoothly. Therefore, heat exchange of the air heat exchangers 7 and 7 of each heat source apparatus 1 can be performed efficiently.

  In addition, when maintaining and inspecting heat pump components such as the compressor 3 and the water heat exchanger 5 housed in the lower housing 21, the space K secured between the heat source devices 1 is between the lower housings 21. Since the width is set to be the same in the vertical direction, a sufficient space for the operator to enter between the heat source units 1 can be secured unlike the conventional heat source unit whose width expands downward in the machine room. Therefore, the operator can enter the space K secured between the heat source units 1 and attach and detach the side wall 21d of the lower housing 21 to easily and quickly perform the maintenance and inspection of the parts.

  Next, since the experiment which compares the performance of the heat source machine 1 of this Embodiment and the conventional heat source machine was conducted, the result is demonstrated.

  As shown in FIG. 7, three heat source machines of this embodiment are provided side by side. And the inclination | tilt angle (theta) with respect to the vertical direction of the heat exchangers 7 and 7 for air of each heat source machine 1A, 1B, 1C is set to 11 degrees, and the space | interval L1 between the lower housings 21 is set to about 400 mm. Has been.

  FIG. 8 shows an air heat exchanger 7 attached to the heat source units 1A, 1B, and 1C of the present embodiment. The air heat exchanger 7 includes 20 modules 7a each having 1 to 4 rows and A to E columns. Similar air heat exchangers 7 and 7 are attached to the left and right side surfaces of the heat source units 1A, 1B, and 1C.

  And the ventilation measurement result of the air which operates the air blower 26 and passes the heat exchanger 7 for air is shown in FIG. In the same figure, (a) shows the wind speed value of each module 7a on the left side surface of the open side heat source machine (the left end side heat source machine shown in FIG. 7) 1A. (B) shows the wind speed value of each module 7a on the right side surface of the open-side heat source unit 1A. (C) shows the wind speed value of each module 7a on the left side surface of the center side heat source unit 1B. (D) shows the wind speed value of each module 7a on the right side surface of the center side heat source unit 1B.

  As shown in the tables of (a) to (d), substantially the same wind speed was measured in each module 7a of the open side heat source unit 1A and the central side heat source unit 1B. As is clear from the experimental results, there is almost no difference in air volume between the open side heat source units 1A, 1C and the central side heat source unit 1B, and it can be confirmed that the average air volume flows in any of the heat source units 1A, 1B, 1C. It was.

  Further, as shown in FIG. 10, the conventional heat source apparatus 100 shown in FIG. 13 is installed at a predetermined interval. As shown in FIG. 11, the air heat exchanger 106 includes nine modules 106 a having 1 to 3 rows and A to C columns.

  And the ventilation measurement result of the air which passes the heat exchanger 106 for air of the conventional heat source apparatus 100 is shown in FIG. In the same figure, (a) shows the wind speed value of each module 106a on the left side surface of the heat source apparatus 100. (B) shows the wind speed value of each module 106 a on the right side surface of the heat source device 100.

  As described above, the area of the heat exchanger 7 for air of the heat source apparatus 1 of the present embodiment is approximately twice as large as the area (capacity system) of the heat exchanger 106 of the conventional heat source apparatus 100. In proportion to this, the average air volume of each air heat exchanger 7 of the heat source apparatus 1 of the present embodiment is twice or more the average air volume of the air heat exchanger 106 of the conventional heat source apparatus 100.

In addition, it can obtain | require by average air volume Fa = the area of the heat exchanger for air x average wind speed. For example, in FIG. 8 and FIG. 9A, the front area Afr of the air heat exchanger = 1.766 m ² and the average wind speed Uav = 1.97 m / s.

Therefore, when obtaining the average air volume Fa, the ^{Fa = 1.766m 2 × 1.97m / s} × 60s / min = 208.74m 3 / min ≒ 209m 3 / min.

  From these experimental results, even with the heat source device of the present embodiment in which the air heat exchanger is inclined, it is possible to ensure an air volume equal to or higher than that of the conventional heat source device in which the air heat exchanger is arranged in parallel. I was able to confirm.

  Moreover, in the conventional heat source apparatus in which the heat exchanger for air is installed in parallel with two surfaces in the vertical direction, it is necessary to secure a certain distance in order to secure a space for taking in air.

  However, in the heat source device of the present embodiment, even when the heat source devices are installed in contact with each other, an air intake space can be secured between the two due to the structure thereof.

  The present invention is not limited to the embodiment described above. For example, the water heat exchanger 5 can be installed above the compressor 3 in consideration of the installation space so as not to be bulky in the width direction of the lower housing 21.

  In the present embodiment, an air conditioner, a refrigeration apparatus, a refrigeration apparatus, and the like may be configured in addition to the heat pump hot water supply apparatus.

DESCRIPTION OF SYMBOLS 1 Heat pump type heat source machine 2 Housing | casing 3 Compressor 5 Water heat exchanger 7 Air heat exchanger 20 Upper housing 21 Lower housing 26 Blower

Claims (3)

In a heat pump type heat source machine in which heat pump components such as a heat exchanger for air, a blower, a compressor and a heat exchanger are accommodated in the housing,
The housing comprises an upper housing width both left and right sides downward are formed to be inclined so as to reduce the front view, and a lower housing provided continuously on the lower surface the upper housing ,
The air heat exchanger is provided on both the left and right sides of the upper casing, and the blower has the air sucked from both the left and right sides of the upper casing passing through the air heat exchanger. Provided in the upper housing to be discharged from the body,
The compressor and the heat exchanger are provided in the lower housing ,
The lower casing is formed in a rectangular parallelepiped shape in which the front shape and the rear shape are rectangular, and the width in the left-right direction of the lower casing is set to be equal to the width in the left-right direction of the lower surface of the upper casing. The difference between the width in the left-right direction of the upper surface of the upper housing and the width in the left-right direction of the lower housing is set to 400 mm or more,
The heat pump type heat source apparatus , wherein a vertical dimension of the lower casing is set to be greater than a lateral width of the lower casing .   A heat pump heat source machine comprising a plurality of heat pump heat source machines according to claim 1. In the housing, heat pump components such as a heat exchanger for air, a blower, a compressor and a heat exchanger are accommodated, and a heat pump type heat source machine used to install a plurality of units ,
The housing comprises an upper housing width both left and right sides downward are formed to be inclined so as to reduce the front view, and a lower housing provided continuously on the lower surface the upper housing ,
The air heat exchanger is provided on both the left and right sides of the upper casing, and the blower has the air sucked from both the left and right sides of the upper casing passing through the air heat exchanger. Provided in the upper housing to be discharged from the body,
The compressor and the heat exchanger are provided in the lower housing ,
The lower casing is formed in a rectangular parallelepiped shape in which the front shape and the rear shape are rectangular, and the width in the left-right direction of the lower casing is set to be equal to the width in the left-right direction of the lower surface of the upper casing. ,
Vertical length of the lower housing, the lower housing is set larger than the width length of the left and right direction, the interval between the lower housing is characterized in that it is set to a predetermined value or more Heat pump type heat source machine.

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