KR101609051B1 - Heat source apparatus - Google Patents

Abstract

Provided is a heat source device capable of effectively utilizing the heat discharged from the electric component box as discharge air into the housing body.
An exhaust hood 42 having an exhaust fan for air-cooling the electric components 31 in the electric component box 13 to exhaust air in the electric component box 13; A drain pan 18 for receiving the drain from the heat exchanger and a lower housing body 5 for housing the electric component box 13, the exhaust hood 42 and the drain pan 18, respectively. The exhaust air discharged from the electric component box 13 into the lower housing body 5 is guided to the drain pan 18 by the exhaust hood 42. [

Description

{HEAT SOURCE APPARATUS}

Embodiments of the present invention relate to a heat source device used in, for example, an air conditioner or a heat pump water heater.

[0002] Conventionally, as an example of this type of heat source device, there have been known an electric component box for housing electric components, a fan for air-cooling the electric components in the electric component box to exhaust air from the electric component box to the outside of the electric component box, And a housing body for housing the electrical component box, the fan, and the drain pan, respectively (see, for example, Patent Document 1).

Japanese Laid-Open Patent Publication No. 2012-87954

However, in Patent Document 1, there is a problem that the exhaust heat forcibly exhausted by the fan from the electric component box to the housing body of the entire apparatus is not effectively used.

In addition, since the conventional electric component box has a space for accommodating commercial electric component parts and an empty space for accommodating arbitrarily mounted optional electric component parts in advance, the electric component box itself has been enlarged.

This increases the size of the housing body of the heat source device accommodating the electric component box and increases the amount of sheet metal used to form the housing body itself and the electric component box itself of the heat source device, have.

SUMMARY OF THE INVENTION An object of the present invention is to obtain a heat source device capable of effectively utilizing heat discharged as discharge air from an electric component box into a housing body.

According to an embodiment of the present invention, there is provided an electric component box that accommodates electric components, an exhaust fan that exhausts air in the electric component box, a drain fan that receives the drain from the heat exchanger, And an exhaust guide for guiding the exhaust air exhausted from the electric component box to the housing body by the exhaust fan to the drain pan is provided in the heat source device.

Thereby, it is possible to provide a heat source device capable of effectively utilizing the heat discharged from the electric component box as discharge air into the housing body.

1 is an enlarged perspective view of a main part of a heat source device according to an embodiment.
2 is a perspective view showing a part of the overall configuration of the heat source device according to the embodiment.
3A is a side schematic view showing the flow of air in the electric component box shown in Figs. 1 and 2. Fig.
FIG. 3B is a top view schematic view of FIG.
4 is a perspective view showing a configuration of the lower housing body of the heat source device according to the embodiment.
Fig. 5 is a diagram showing a configuration of a refrigeration cycle of a heat source device according to the embodiment shown in Figs. 1 to 4 and a control device for controlling the electric component.
6 is an enlarged perspective view of the main part of Fig.
Fig. 7 is an enlarged perspective view of the peripheral portion of the outside air intake port shown in Figs. 1, 2, and the like.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals.

2 is a perspective view showing a part of the entire structure of the heat source device 1 after being assembled, and shows a state in which a part of a side panel 2 to be described later is removed. In Fig. 2, the left end in the drawing is referred to as "front (N)", the right end is referred to as "rear (H)", the right side is viewed from the front (N) Right side (K) ", and the side opposite to the right side (K) is referred to as " left side (E) ".

The heat source device 1 can be used as an air conditioner. That is, cold water or hot water can be generated, the generated cold water is passed through an indoor water heat exchanger (not shown), and the room air is cooled to cool the room (inside the house). Further, the generated hot water is passed through an indoor water heat exchanger (not shown), and the room air is heated to heat the room (inside the house). It can be used as a heat pump hot water supply device in addition to the air conditioner.

Here, the heat source device 1 is formed into a long rectangular shape in the left-right direction when seen in a plan view. The heat source device 1 is a substantially lower half portion in the vertical direction and includes a lower housing body 5 as an example of a housing body of the heat source device 1 and a heat exchange portion 6 arranged on the lower housing body 5 . A machine room (7) is formed in the lower housing body (5). 2, the heat exchanger 6 is formed in an inverted trapezoid shape having a wide upper end and a narrower lower end when viewed from the front (N) side or the rear (H) side. On the contrary, the lower housing body 5 is formed in a trapezoidal shape whose upper end is narrow and whose lower end is wide. The upper end of the heat exchanging part 6 and the lower end of the lower housing body 5 are substantially equal in width dimension and the lower end of the heat exchanging part 6 and the upper end of the lower housing body 5 have a width dimension Are substantially the same. For this reason, the heat source device 1 is formed in a constricted shape in the middle in the vertical direction.

The heat exchanger 6 is provided with a plurality of heat exchanger modules 8, 8, ... in the longitudinal direction of the heat source device 1 (in FIG. 2, left and right direction) And blowers 9, 9, .... 2 group of air heat exchangers 8a and 8b are arranged so as to face each other and the air heat exchangers 8a and 8b are disposed between the upper ends of the air heat exchangers 8a and 8b, (9) are provided.

A ceiling plate 10 having a cylindrical jet opening 11 is provided in the upper opening of each heat exchanger module 8 so as to cover each blower 9. [ The projecting opening end surface of the jetting port portion 11 of each ceiling plate 10 is covered by the fan guard 11a.

Each of the heat exchanger modules 8 is configured such that the upper end side of the ceiling plate 10 is wider and the lower end side of the air conditioner exchanger 8a, And are formed so as to be substantially V-shaped when viewed from the front.

The lower housing body 5 in which the heat exchanging unit 6 is disposed includes an upper frame 5a and a lower frame 5b and a vertical frame 5c connecting the upper frame 5a and the lower frame 5b, . The lower housing body 5 is provided with three side panels 2a and 2b on the left and right sides E and K along the long side direction and three side panels 2a and 2b on the front side N along the short side direction, A rear panel 4 is attached to the back surface H and a machine room 7 is formed in a space surrounded by these panels 2a, 2b, 3,

The upper frame 5a and the lower frame 5b of the lower housing body 5 are each formed by a shape of a desired shape such as a " Respectively. The upper frame 5a is shorter and the lower frame 5b is longer than the upper frame 5a in both the front face N and the back face H in dimension in the short side direction.

That is, the dimension in the short side direction of the upper frame 5a is shortened to match the dimension in the short side direction of the heat exchanger module 8 constituting the heat exchanging part 6. [ Therefore, the vertical frame 5c connecting the upper frame 5a and the lower frame 5b is inclined so that the directional dimensions of the vertical direction are sequentially enlarged from the upper part to the lower part, and the lower housing part 5 itself And is formed in a substantially trapezoidal shape of an inverted V-shape as viewed from the front and viewed from the rear.

Thus, the heat exchanger 6 disposed on the lower housing body 5 is inclined to be gradually reduced from the upper end toward the lower end as viewed from the front, and is formed in a substantially V-shape, and the lower housing body 5 So that the heat source device 1 as a whole is formed in a constricted shape in the middle in the vertical direction as seen from the front.

4, the machine room 7 is provided with a water circulation pump 12, a first group of refrigeration cycle units 1RA, a second group of water circulation pumps 12, The refrigeration cycle unit 2RB and the electric component box 13 are disposed.

That is, the electric component box 13 is disposed at a position near the front face N, the water circulation pump 12 is disposed at a position nearest to the rear face H, A second group of refrigeration cycle units 2RB and a first group of refrigeration cycle units 1RA are arranged between the first group and the second group.

In this manner, the electric component box 13, the first group, the second group of refrigeration cycle units 1RA and 2RB, the water circulation pump 12, the refrigerant pipe and the water pipe are accommodated in the machine room 7, All the components are housed inside the side panels 2a and 2b constituting the left and right sides of the lower housing body 5. [

Fig. 4 shows the construction of the heat source device 1 shown in Fig. 2 when viewed from the side E opposite to the side face K. Fig. 4, the first water heat exchanger 14 is arranged close to the water circulation pump 12 provided on the rear surface H side (the left end side in FIG. 3) of the machine room 7 . A second water heat exchanger (15) is disposed on the right side in the long side direction of the lower housing body (5) from the first water heat exchanger (14).

    As shown in Fig. 4, a first water pipe P1 is connected to the water circulation pump 12, which is used as a return pipe from a place to be air-conditioned as an inlet pipe. A second water pipe (P2) is connected to the upper portion of the water circulation pump (12) and the first water heat exchanger (14).

The lower part of the first water heat exchanger 14 and the upper part of the second water heat exchanger 15 are connected by the third water pipe P3. And a fourth water pipe P4 is connected to a lower portion of the second water heat exchanger 15. [ The fourth water pipe P4 extends toward the water circulation pump 12 and has an extension end juxtaposed with the first water pipe P1 and is projected from the back panel 4 to the outside. The fourth water pipe P4 extends to a place to be air-conditioned as a lead-out pipe, and is connected to an indoor water heat exchanger on the indoor side (not shown).

4, two capacity variable type compressors 16A and two four-way switching valves 17 (described later) are provided on the back side (right side K side) of the first water heat exchanger 14, And two independent refrigeration cycle devices 1K are disposed.

The refrigerating cycle apparatus 1K includes a heat exchanger module 8 communicating with each other through a refrigerant pipe and disposed above the lower housing body 5 located at the most back side H, Two independent refrigeration cycles are constituted by two groups of air heat exchangers 8a and 8b constituting the heat exchanger module 8, respectively. These constitute a first refrigeration cycle unit 1RA connected through a refrigerant pipe.

The refrigeration cycle apparatus (also referred to as the first water heat exchanger) 15 is constituted by two capacity variable type compressors 16B, two four-way switching valves 17 and the like (described later) on the back side (right side K side) 2K.

The refrigeration cycle apparatus 2K includes a heat exchanger module 8 communicating with each other through a refrigerant pipe and disposed above the lower housing body 5 located at the front most N side, Two independent refrigeration cycles are constituted by the air heat exchangers 8a and 8b of two groups each constituting the base module 8. [ These are connected through a refrigerant pipe, and a second refrigeration cycle unit 2RB is constituted.

That is, the first refrigeration cycle unit 1RA and the second refrigeration cycle unit 2RB, which are independent of each other except for the air heat exchanger constituting the four heat exchanger modules 8, are provided in the machine room 7 in the lower housing body 5 .

The first water heat exchanger 14 and the second water heat exchanger 15 communicate with each other in series through the first to fourth water pipes P1 to P4. As shown in FIG. 5, The two cycle units 1RA and 2RB are connected in parallel to two groups of the refrigerating cycle devices 1K and 2K to one water heat exchanger 14 and 15, respectively.

A drain pan 18 is provided on the upper frame 5a constituting the lower housing body 5 as shown in Fig. Although not particularly shown, a drain hose is connected to the drain pan 18, and drain water is drained through the drain hose.

The drain water is generated by heat exchanging the air heat exchangers 8a and 8b with air during the heating operation, which will be described later, and condensing moisture contained in the air. The drain water has a water droplet shape at the initial stage of its formation, for example, adheres to the outer surface of an air heat exchanger or the like, but gradually grows and drops downwardly to the drain pan 18.

Also, the drain water is drained to the outside through the drain hose.

Fig. 5 is a diagram mainly showing a refrigeration cycle of the heat source device 1 having the first to fourth refrigeration cycles R1 to R4.

5, the first refrigeration cycle unit 1RA is constituted by refrigeration cycles R1 and R2 of the first and second systems, the second refrigeration cycle unit 2RB is constituted by the third and fourth refrigeration cycles R1 and R2, System refrigeration cycle (R3, R4).

The refrigeration cycle (R1) of the first system will be described below, and the refrigeration cycle (R1) of the second system to the refrigeration cycle of the fourth system R2 to R4 are denoted by the same reference numerals, and a new description is omitted.

The refrigerant cycle R1 of the first system connects the first port of the four-way switching valve 17 to the discharge-side refrigerant tube of the capacity variable type compressor 16A, and the second port of the four- And one heat exchanger module 8 (composed of a group of the air heat exchangers 8a and 8b) through a refrigerant pipe. 5, one heat exchanger is shown connected to each of the refrigeration cycles R1 to R2. However, in the arrangement after the assembly, two air heat exchangers 8a and 8b are provided so as to face each other as described with reference to Fig. 2, Thereby constituting a heat exchanger module 8 of one group.

Although not shown in Fig. 5, the air heat exchangers 8a and 8b are connected in parallel and communicate with the refrigerant pipe provided with the expansion valve 19, respectively. The refrigerant pipe communicates with the first refrigerant passage (20) provided in the first water heat exchanger (14).

The first refrigerant passage 20 communicates with the third port of the four-way switching valve 17 through a refrigerant pipe. The fourth port of the four-way switching valve 17 communicates with the suction portion of the compressor 16A through a refrigerant pipe through a gas-liquid separator (not shown).

On the other hand, the water circuit Z connects the first water pipe P1, which is a return pipe from the place to be air-conditioned (indoor water heat exchanger), to the water circulation pump 12, for example. The discharge port side of the water circulation pump 12 is connected to the water passage 21 of the first water heat exchanger 14 through the second water pipe P2. The water passage 21 of the water heat exchanger 14 communicates with the water inlet side of the water passage 21 of the second water heat exchanger 15 through the third water pipe P3. The water outlet side of the water passage 21 is led from the fourth water pipe P4 to a place to be air-conditioned.

The refrigerant cycle R2 of the second system is also configured in the same manner as the refrigeration cycle R1 of the first system and the four-way switching valve 17 is connected to the second refrigerant of the first water heat exchanger 14 And is connected to the flow path 22.

That is, the first water heat exchanger 14 is provided with the first refrigerant passage 20 and the second refrigerant passage 22 alternately on both sides of one water passage 21, and one water heat exchanger 14 Are used together by the first and second refrigeration cycles R1 and R2 of the second system, and the refrigeration cycles R1 and R2 are connected in parallel.

Similarly, the second water heat exchanger 15 is provided with the first refrigerant passage 20 and the second refrigerant passage 22 alternately on both sides of the one water passage 21, and one second water heat exchanger The refrigerator cycle 15 is used together with the refrigeration cycles R3 and R4 of the third and fourth systems and the refrigeration cycles R3 and R4 are connected in parallel.

In this way, the water circulation pump 12, the first water heat exchanger 14 and the second water heat exchanger 15 are installed in the machine room 7, and the first to fourth water pipes P1 to P4, The water circulation pump 12, the first water heat exchanger 14, and the second water heat exchanger 15 are connected in series.

That is, the first refrigeration cycle unit 1RA is composed of the refrigeration cycle R1 of the first system and the refrigeration cycle R2 of the second system, and the second refrigeration cycle unit 2RB is composed of the refrigeration cycle of the third system (R3), and a fourth system refrigeration cycle (R4).

Thus, for example, water introduced at 12 占 폚 is cooled to 9.5 占 폚 in the first water heat exchanger 14 and cooled to 2.5 占 폚, for example, in the second water heat exchanger 15, Resulting in cold water. This cold water is led to an indoor water heat exchanger installed at a place to be air-conditioned through a second water pipe (P2) serving as a lead-out pipe, and radiates cold air to the air delivered by the indoor fan to perform a cooling function.

The refrigerant evaporated in the first and second water heat exchangers 14 and 15 is introduced into the gas-liquid separator through the four-way switching valve 17 and is subjected to gas-liquid separation and then sucked into the compressors 16A and 16B And then compressed again to repeat the above-described refrigeration cycle.

By connecting the water flow paths 21 of the first water heat exchanger 14 and the second water heat exchanger 15 in series in this manner, the temperature of the cold water is lowered in two stages, so that a larger amount of water is used, .

The first water heat exchanger 14 is connected to the refrigeration cycle R1 and the refrigeration cycle R2 in two systems so that one compressor 16A is installed in each of the refrigeration cycles R1 and R2 It becomes possible.

Likewise, the second water heat exchanger 15 also communicates with the refrigeration cycle R3 and the refrigeration cycle R4 of the two systems, thereby mounting one compressor 16B in each of the refrigeration cycles R3 and R4 Lt; / RTI >

Therefore, all of the refrigeration cycles R1 to R4 are independent, and there is no need to uniformly lubricate the lubricant circulating in the refrigerant circuit in the compressor 16, so that the performance can be prevented from being lowered by uniform lubrication. In addition, even if one refrigeration cycle (for example, R1) is stopped, the operation can be continued in the other three refrigeration cycles (R2 to R4), so that the influence of the operation stop can be minimized, .

Further, since all of the compressors 16A and 16B and the water circulation pump 12 are configured to be variable in capacity, efficient operation can be performed in accordance with the cooling / heating load.

That is, the compressors 16A and 16B are each provided with a three-phase motor, and the compressors 16 are driven by the three-phase motor. The compressor 16 is equipped with a voltage controlled PWM type inverter 23 for controlling the voltage and frequency applied to the three-phase motor by chopping the applied voltage to a predetermined carrier frequency, .

The inverter 23 includes a smoothing capacitor 26 and a power factor improving reactor 27 for smoothing the direct current voltage to a converter 25 for rectifying three-phase alternating current of the three- Respectively. The inverter 23 is connected to a plurality of controllers, for example, A, B, C, and D controllers 28, 28, ..., which control the frequency of the output voltage. These A to D controllers 28, 28, ... are connected to the overall controller 29 by signal lines (not shown), respectively.

The total controller 29 calculates the difference between the temperature of the water (hot water or cold water) to be discharged and the command temperature when the temperature command signal set by the operation of the operation unit 30 or the like is received and the discharge water temperature is constant at the command temperature The operation of the refrigeration cycles (R1 to R4) of each system is controlled. The control contents include, for example, an operation mode of cooling operation or heating operation, the number of compressors 16 to be operated, characteristics and operation frequency of the compressor 16, and an operation frequency of the water circulation pump 12.

This control content is given to the A to D controllers 28, 28, ... of the required refrigeration cycle unit as an operation command signal. The A to D controllers 28 to 28 control the control signals corresponding to the operation command signals to the inverters 23 to 23, the compressor 16, the four-way switching valve 17, the air heat exchangers 8a and 8b To control the refrigeration cycles R1 to R4, respectively.

That is, the A to D controllers 28, 28, ... control the operation frequency of the compressor motor by changing the output of the inverter 23 to control the number of revolutions of the compressor 16, And controls the rotation speed of the blower 9 of the air heat exchanger 8a or 8b and the rotation speed of the water circulation pump 12 to a desired value.

The inverters 23, 23, ..., the converters 25, 25, ..., the smoothing capacitors 26, 26, ..., the reactors 27, 27 ..., the A to D controllers 28, The overall controller 29 and the operating section 30 are accommodated in the electric component box 13 as control electronic components and electric components of the commercial electric component 31 (see FIG. 3B).

As shown in Figs. 1, 2, 3, 6, and 8, the electric component box 13 is provided with an electric component box main body 32 made of sheet metal. In the electric component box main body 32, Of the commercial electric component (31).

FIG. 3A is a side schematic view showing the flow of air in the electric component box 13 viewed from the right side K side, and FIG. 3B is a schematic top view of the top view of FIG.

As shown in Fig. 1 or 6, etc., the electric component box main body 32 has a side panel 2a side (on the right side K side in Figs. 1 and 2, etc.) However, the side of the side panel 2b on the opposite side (the side of the left side E) is also open almost entirely.

As shown in Fig. 3, the electric component box main body 32 is provided on its bottom plate 32B with a pair of side plates (hereinafter referred to as " front " 32N, and 32H. A central compartment space 33 is defined between the side plates 32N and 32H for partitioning the interior of the electrical component box main body 32 into two chambers with a predetermined gap therebetween when viewed from the front face N or the rear face H Is installed.

The first refrigeration cycle unit 1RA and the second refrigeration cycle unit 2RA constitute the first refrigeration cycle unit 1RA in a single chamber on the side panel 2a side (on the right side K side in Figs. 1 and 2) partitioned by the central partition space 33, And a commercial electric component 31 for driving the two blowers 9 are accommodated. Two compressors 16B constituting the second refrigeration cycle unit 2RB and two compressors 16B constituting the second refrigeration cycle unit 2RB are provided in one room on the side panel 2b side (the left side E side in Figs. 1 and 2, A commercial electric component 31 for driving the electric component 9 is accommodated. And a heat sink 37 for cooling the commercial electric component 31 is provided so as to protrude from the central partition space 33. [

The bottom plate 32B of the electrical component box main body 32 is provided with an outside air intake port 34 communicating with the inside of the central partition space 33. [ On the other hand, an exhaust port 35 is provided in the side plate 32H on the right side of Fig. 3A of the electric component box 13, and an exhaust fan 36 for exhausting the air in the central partition space 33 is installed in the exhaust port 35 . The air that has entered the central partition space 33 from the outside air intake port 34 cools the heat sink 37 and the air warmed by the heat sink 37 is exhausted by the exhaust fan 36 to the inside of the electric component box 13 And exhausted to the outside. That is, the central partition space 33 has a function of a ventilation path.

1 and 6 of the electrical component box 13 are juxtaposed in the longitudinal direction of the machine room 7 with the optional electrical component receiving portion 38 of the required width. The optional electrical component receiving portion 38 is a receiving space in which the optional electrical component 39 such as a high frequency abatement device, for example, is appropriately disposed and fixed in place of the commercial electrical component 31 .

The high frequency reducing apparatus is, for example, an 18-pulse rectifier or a 12-pulse rectifier, and is connected between the inverter 23 and the converter 25 to reduce the high frequency. The high-frequency reducing apparatus is provided with an air-cooling fan (40) for forcedly cooling the interior thereof. In the present embodiment, four optional electric component parts 39 can be mounted, two on the right side K side and two on the left side E side.

As shown in Figs. 1 to 4 and the like, the optional electric component receiving portion 38 and the electric component box main body 32 have a pair of right and left sheet metal partition plates 41a, 41b.

The left and right partitioning plates 41a and 41b are arranged such that the vertically raised portion of the rectangular parallelepiped perpendicular to the right triangle is connected to the side plate 32H on the side of the optional electrical component receiving portion 38 of the electrical component box main body 32 The side walls 2a and 2b are provided on the inclined sides of the machine room 7 so as to face the outside of the machine room 7 (toward the right side K or the left side E side of the heat source device 1) Are adhered in close contact with each other.

Heat (warm air) generated in the optional electric component 39 of the optional electric component receiving portion 38 or the like by the left and right partitioning plates 41a and 41b is directed toward the electric component box 13 (Figs. 1, 2, (Left direction in FIG. 6), and the heat (hot air) is guided to the side of the drain pan 18 located above the optional electrical component receiving portion 38 to heat the drain pan 18 .

As shown in Figs. 1, 3A, and 6, the electric component box 13 is provided with an exhaust port 35 on the side plate 32H on the side of the optional electric component receiving portion 38, And an exhaust fan 36 is provided. An exhaust hood (exhaust guide) 42 in the form of square cylinders is provided on the upper portion of the optional electrical component receiving portion 38 to cover the exhaust fan 36.

The exhaust hood 42 is provided with a hood exhaust port 43 having an almost entire front surface opened at the upper end in Figs. 1, 3A, and 6 facing the bottom surface of the drain pan 18. The air in the central partition space 33 in the electric component box 13 is exhausted from the hood exhaust port 43 to the outside by the operation of the exhaust fan 36 so that the outside air is discharged from the later- Is drawn into the central compartment space 33 in the electric component box 13 through the heat exchanger 34 and ventilated so that the heat sink 37 of the commercial electric component 31 of the electric component box 13 is forcibly cooled. The exhaust after forced air cooling of the commercial electric component 31 becomes warm air and the air inside the machine room 7 on the upper side of the optional electrical component receiving portion 38, that is, the inside of the lower housing member 5 And is exhausted to the space portion.

The hot air is guided by the exhaust hood 42 and is sprayed from the hood exhaust port 43 to the bottom surface of the drain pan 18. The exhaust gas jetted to the bottom surface of the drain pan 18 can heat the drain pan 18 because it is air heated in the electric component box 13, that is, a hot wind.

It is possible to prevent or reduce the drain of the drain pan 18 from being frozen when the outside temperature is low in the heating operation of the heat source device 1 by heating the drain pan 18. That is, the heat of the exhaust can be effectively used.

Fig. 7 is an enlarged perspective view of the intake port 44 and the peripheral portion thereof shown in Figs. 1, 2 and 4, and the arrows in Fig. 7 indicate the air flow direction. As shown in these drawings, the intake port 44 opens substantially below the electric component box 13 of the lower frame 5b, and the bottom portion 32B of the electric component box 13 is provided inside the intake port 44 And a ventilation channel 45 communicating with the opening of the ventilation duct 45 is formed. Outside air or room air is introduced into the electric component box 13 through the intake port 44, the ventilation path 45, and the external air intake port 34.

The baffle plate 45 is provided with a baffle plate 46, for example, in the form of a rectangular flat plate that stands up almost perpendicularly at a predetermined interval in the vicinity of the inner surface of the air inlet 44.

Therefore, when the indoor air or the outside air flows into the ventilation passage 45 inside the ventilation passage 45 via the intake port 44 as shown by arrows in the figure, the indoor air or the outside air collides with the baffle plate 46 and the ventilation direction is changed. Further, when ventilation collides with the baffle plate 46, dust and moisture in the ventilation are separated, so that ventilation is purified. The purified air is introduced into the electric component box 13 through the ventilation path 45 and the commercial electric component 31 is forcibly cooled.

Therefore, the inner surface of the electric component box 13 and the commercial electric component 31 therein can be prevented or reduced from being contaminated by moisture or dust in the air.

While the present invention has been described with reference to several embodiments thereof, these embodiments are provided by way of example and are not intended to limit the scope of the present invention. These new embodiments can be implemented in various other forms, and various omissions, substitutions, and alterations can be made without departing from the gist of the present invention. These embodiments and their modifications fall within the scope and spirit of the present invention and are included in the scope of the invention described in the claims and their equivalents.

1: heat source device 5: lower housing body
5a: upper frame 5b: lower frame
5c: vertical frame 6: heat exchanger
7: Machine room 13: Electrical parts box
14: first water heat exchanger 18: drain pan
31: commercial electric component 38: optional electric component receiving part
39: Optional electrical components 42: Exhaust hood (exhaust guide)

Claims (2)

An exhaust fan for exhausting air in the electric component box by air-cooling the electric components in the electric component box, a drain fan for receiving the drain from the air heat exchanger, and an electric component box, an exhaust fan, and a drain fan Respectively, the heat source device comprising:
An exhaust guide for guiding the exhaust air exhausted from the electric component box to the housing body by the exhaust fan to the drain pan is provided,
An optional electrical component accommodating part accommodating a commercial electrical component part of the electrical component part in the electrical component part box and accommodating optional electrical component parts of the electrical component part is juxtaposed to the electrical component part box, Are partitioned by a partition plate extending in the vertical direction so as to prevent the heat generated in the optional electric component from flowing into the electric component box,
And exhaust air discharged by the exhaust guide is exhausted to an upper side of the optional electrical component receiving part. delete

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