JP5790614B2 - Heat source unit and hot water supply system - Google Patents

Description

  The present invention relates to a heat source unit and a hot water supply system.

  Conventionally, as a heat source unit, there is one described in JP 2010-71514 A (Patent Document 1). As shown in FIG. 7, the heat source unit includes a bottom plate 106 having a drain drain port 105, a heater 101 provided above the drain drain port 105, and an upper fixture for sandwiching and fixing the heater 101 from above and below. 103 and a lower fixture 104.

  In this heat source unit, the lower fixture 104 has a cylindrical portion 104a that protrudes downward at the center, and this cylindrical portion 104a has a drain hole 107 that is opened smaller than the fingertip 10 at the bottom. Yes. In this heat source unit, by inserting the cylindrical portion 104a into the drain drain port 105, the drain water is discharged from the drain hole 107, while the fingertip 10 enters from the drain hole 107 and contacts the heater 101. Prevents burns and so on.

JP 2010-71514 A

  However, in the above conventional heat source unit, the drain hole 107 is smaller in size than the fingertip 10, so that the drain water drainage ability is reduced, or the drain hole 107 is clogged with dust and cannot be drained. was there.

  Further, since the lower fixing tool 104 is in contact with the heater 101, there is a risk that the fingertip 10 comes into contact with the tubular portion 104a of the heated lower fixing tool 104 and is burned by being directly heated by the heater 101. There was a safety problem.

  Then, the subject of this invention is providing the heat-source unit and hot-water supply system which can prevent the fall of the drainage capability of drain water, can prevent a finger | toe from being burned by the heat | fever of a heater, and can improve safety | security.

In order to solve the above problems, the heat source unit of the present invention is:
A bottom frame having drain holes for discharging drain water;
A heater for preventing the drain water from freezing;
A heater contact prevention member positioned between the drain hole and the heater and spaced apart from the drain hole and the heater ;
The heater contact preventing member has at least one through hole .

  According to the heat source unit having the above configuration, the heater contact prevention member is located between the drain hole and the heater, and is separated from the drain hole and the heater. For this reason, the heater contact preventing member does not hinder drainage from the drain hole. In addition, the heater contact prevention member can prevent direct contact with the heater even if the finger enters from the drain hole, and can prevent the finger from being burned. Furthermore, since the heater contact prevention member does not contact the heater, it is suppressed from being heated to a high temperature, and it is possible to prevent a finger from coming into contact with the heater contact prevention member and being burned. Accordingly, it is possible to prevent the drain water from being reduced in drainage capacity, and to prevent the finger from being burned by the heat of the heater, thereby improving safety.

Further, because at least one through-hole is that provided in the heater contact prevention member, drain water, because it can flow into the drain hole through the through hole of the heater contact prevention member, from the drain hole Drainage is further promoted.

In the heat source unit of one embodiment,
The heater contact preventing member is a part of the back panel attached to the bottom frame.

  According to the embodiment, since the heater contact prevention member is a part of the back panel attached to the bottom frame, the structure of the heat source unit can be simplified and the assembly work of the heat source unit can be facilitated. .

The hot water supply system of the present invention is
The heat source unit;
And a hot water storage tank for storing hot water heated by the heat source unit.

  According to the hot water supply system having the above configuration, since the heat source unit is provided, it is possible to prevent the drain water drainage from being lowered and improve safety.

  ADVANTAGE OF THE INVENTION According to this invention, while being able to prevent the drainage capacity of drain water from being lowered, it is possible to improve safety by preventing fingers from being burned by the heat of the heater.

It is a simple lineblock diagram showing the composition of the hot-water supply system of one embodiment of the present invention. It is a front view of a heat source unit. It is AA sectional drawing of FIG. It is a simplified plan view of the heat source unit. It is BB sectional drawing of FIG. It is a perspective view which shows the attachment state of the heater contact member of the said heat-source unit. It is sectional drawing explaining the attachment state of the heater contact member in the conventional heat-source unit.

  Hereinafter, the present invention will be described in detail with reference to illustrated embodiments.

  FIG. 1 is a simplified configuration diagram showing a hot water supply system according to an embodiment of the present invention. As shown in FIG. 1, the hot water supply system includes a heat source unit 1 and a hot water storage tank 2 that stores hot water heated by the heat source unit 1.

The heat source unit 1 includes a compressor 13, a water heat exchanger 8 (condenser), an expansion valve (decompression mechanism) 14, and an air heat exchanger (evaporator) 15. The compressor 13, the water heat exchanger 8, the expansion valve 14, and the air heat exchanger 15 are connected in order via the refrigerant passage 16. For example, a CO ₂ refrigerant is used as the refrigerant. A fan 20 and a motor 21 that drives the fan 20 are arranged facing the air heat exchanger 15.

  Connected to the bottom of the hot water storage tank 2 is one water inlet passage 5a branched from the water supply passage 5 connected to the water supply source E. Thereby, the city water supplied from the water supply source E is introduce | transduced into the bottom part of the hot water storage tank 2 via the inflow channel 5a. One end of the circulation path 6 is connected to the bottom of the hot water storage tank 2. A circulation pump 7 and the water heat exchanger 8 are connected to the circulation path 6.

  The other end of the circulation path 6 is connected to the top of the hot water storage tank 2. A mixing valve 11 is connected to the top of the hot water storage tank 2 through a hot water discharge path 12. The mixing valve 11 is connected to the other incoming water flow path 5 b branched from the water supply flow path 5 and the hot water supply terminal T. Thereby, the hot water discharged from the top of the hot water storage tank 2 can be mixed with the water supplied from the water supply source E, and hot water at a desired temperature can be supplied at the hot water supply terminal T.

  In the hot water supply system configured as described above, when the compressor 13 and the circulation pump 7 are driven, the water in the hot water storage tank 2 flows through the circulation path 6 from the bottom of the hot water storage tank 2. At this time, the water flowing through the circulation path 6 is heated (boiled up) by the water heat exchanger 8 and returned to the top of the hot water storage tank 2. By continuously performing such an operation, hot hot water can be stored in the hot water storage tank 2. Hot water in the hot water storage tank 2 is supplied to the hot water supply terminal T.

  FIG. 2 shows a front view of the heat source unit. FIG. 3 is a cross-sectional view taken along the line AA in FIG. As shown in FIGS. 2 and 3, the heat source unit 1 includes a casing 30, and the casing 30 includes a ceiling panel (not shown), a front panel (not shown), a side panel 31, and a bottom frame 32. FIG. 2 shows a state where the ceiling panel and the front panel are removed.

  A partition plate 33 arranged in the vertical direction is provided inside the casing 30, and the inside of the casing 30 is partitioned into a compressor chamber 30 a and a heat exchanger chamber 30 b on the left and right by the partition plate 33. ing. A compressor 13 and an expansion valve 14 (not shown) are arranged in the compressor chamber 30a. The compressor 13 is covered with a cover member 35.

  A water heat exchanger 8, an air heat exchanger 15, a fan 20, and a motor 21 are disposed in the heat exchanger chamber 30b. The water heat exchanger 8 is covered with a heat insulating material 36. The air heat exchanger 15 is formed in a substantially L shape in plan view, and is exposed from the side surface and the back surface of the casing 30. The motor 21 is supported by the air heat exchanger 15 via the mounting base 30.

  FIG. 4 shows a simplified plan view of the heat source unit. In FIG. 4, the refrigerant pipe and the water pipe are omitted.

  As shown in FIG. 4, the bottom frame 32 receives drain water such as condensed water generated in the air heat exchanger 15. The bottom frame 32 is provided with a drain hole 32a in the vicinity of the rear end side (the back side of the casing 30). The drain hole 32 a is located immediately below the air heat exchanger 15. The drain water is discharged from the drain hole 32a.

  The water heat exchanger 8 is disposed on the bottom frame 32, and a heater 40 is disposed on the side of the heat insulating material 36 that covers the water heat exchanger 8. The heat insulating material 36 is made of, for example, expanded polystyrene. The heater 40 is a sheathed heater, for example.

  The heater 40 is formed in a substantially L shape in plan view, and is disposed immediately below the substantially L-shaped air heat exchanger 15. The heater 40 faces substantially the entire area of the lower surface of the air heat exchanger 15 in plan view. Most of the heater 40 is separated from the upper surface of the bottom frame 32 in a non-contact manner.

  The condensed water that has dropped from the air heat exchanger 15 comes into contact with the heater 40 and is heated to reach the bottom frame 32. The condensed water reaching the bottom frame 32 is discharged to the outside from the drain hole 32a. Thus, the heater 40 prevents the drain water of the bottom frame 32 from freezing.

  The heater 40 extends from the rear end side of the bottom frame 32 along the side end side, and extends from the side end side of the bottom frame 32 along the rear end side by folding back from the forward path portion 41. And a return path portion 42. The forward path portion 41 is located inside the bottom frame 32 with respect to the return path portion 42.

  At both end portions of the heater 40, rising portions 41 a and 42 a extending so as to be substantially orthogonal to the bottom frame 32 are provided. That is, the forward path portion 41 has a rising portion 41 a at the start end portion, and the return path portion 42 has a rising portion 42 a at the end portion. A power connector (not shown) is connected to both ends of the heater 40.

  Horizontal portions 41 b and 42 b extending so as to be substantially parallel to the bottom frame 32 are provided at portions excluding both end portions of the heater 40. That is, the horizontal portion 41 b is provided in a portion excluding the start end portion of the forward path portion 41, and the horizontal portion 42 b is provided in a portion excluding the end portion of the return path portion 42. The horizontal portion 41 b of the forward path portion 41 is at a higher position than the horizontal portion 42 b of the return path portion 42.

  The horizontal portions 41 b and 42 b face the lower surface of the air heat exchanger 15 in a plan view and do not protrude from the lower surface of the air heat exchanger 15. The horizontal portions 41 b and 42 b are separated from the side surface of the heat insulating material 36.

  The rising portions 41 a and 42 a face the side surface of the air heat exchanger 15. The rising portions 41 a and 42 a are in contact with the side surface of the heat insulating material 36 and are supported by the side surface of the heat insulating material 36.

  A plurality of support members 50 are provided below the heater 40. The support member 50 is positioned between the lower horizontal portion 42 b of the heater 40 and the bottom frame 32 and supports the heater 40. The support member 50 is made of a heat-resistant elastic body.

  FIG. 5 shows a cross-sectional view taken along the line BB of FIG. FIG. 6 is an enlarged perspective view of the vicinity of the drain hole 32a. As shown in FIGS. 4 to 6, the bottom frame 32 has a bottom portion 321 and a peripheral wall portion 322 erected on the peripheral edge portion of the bottom portion 321. A back panel 80 is attached to the peripheral wall portion 322.

  The back panel 80 is in a position corresponding to the heater 40 in the rear end side of the bottom frame 32. The back panel 80 includes a plate member 81 formed in a belt shape and a heater contact prevention member 82 attached to the plate member 81.

  The plate member 81 is arranged in parallel so as to overlap the peripheral wall portion 322. A central portion in the longitudinal direction of the plate member 81 is screwed to the peripheral wall portion 322 by a screw 91. Although not shown, both end portions of the plate member 81 are engaged with the peripheral wall portion 322.

  The heater contact preventing member 82 is integrally connected to the central portion in the longitudinal direction of the plate member 81. The heater contact preventing member 82 is formed in a substantially L shape. The heater contact prevention member 82 includes a mounting portion 822 that extends substantially parallel to the peripheral wall portion 322 and a contact prevention portion 821 that is continuous at a substantially right angle to the mounting portion 822.

  The mounting portion 822 is connected to the plate member 81 and is locked together with the plate member 81 to the peripheral wall portion 322.

  The contact preventing portion 821 extends substantially parallel to the bottom portion 321 and covers most of the drain hole 32a. The contact preventing portion 821 is located between the horizontal portions 41b and 42b and the drain hole 32a. The contact preventing portion 821 is separated from the horizontal portions 41b and 42b and the drain hole 32a. The contact preventing portion 821 is provided with a plurality of slits 82a as examples of through holes.

  The plurality of slits 82a are opposed to the drain holes 32a. The width of the slit 82a is large enough to prevent a finger from penetrating. The slit 82 a extends in the direction in which the contact preventing portion 821 extends, that is, in the direction orthogonal to the plate member 81.

  According to the heat source unit having the above configuration, the heater contact prevention member 82 is located between the drain hole 32a and the horizontal portions 41b and 42b, and is separated from the drain hole 32a and the horizontal portions 41b and 42b. Yes. For this reason, the heater contact preventing member 82 does not hinder drainage from the drain hole 32a. Further, the heater contact preventing member 82 prevents the contact preventing portion 821 of the heater contact preventing member 82 from coming into direct contact with the horizontal portions 41b and 42b even if a finger enters from the bottom to the top of the drain hole 32a. , Can prevent finger burns. Furthermore, since the heater contact preventing member 82 does not come into contact with the horizontal portions 41b and 42b, it is possible to prevent the heater from being heated to a high temperature and prevent the finger from coming into contact with the heater contact preventing member 82 and being burned. Accordingly, it is possible to prevent a decrease in drain water drainage capacity. Further, it is possible to improve safety by preventing the finger from being burned by the heat of the horizontal portions 41b and 42b.

  Further, since the heater contact preventing member 82 is provided with the slit 82a, the dew condensation water that has dropped from the air heat exchanger 15 to the contact preventing portion 821 can flow to the drain hole 32a through the slit 82a. . Thereby, drainage from the drain hole 32a is further promoted. Particularly, since the slit 82a is provided at a position substantially opposite to the drain hole 32a, the condensed water can smoothly flow into the drain hole 32a.

  Further, since the heater contact preventing member 82 is a part of the back panel 80 attached to the bottom frame 32, the structure of the heat source unit 1 can be simplified and the assembly work of the heat source unit 1 can be facilitated. it can.

  Moreover, since the said hot water supply system is provided with the said heat-source unit 1, while being able to prevent the fall of drain water drainage capability, it can improve safety | security.

  In addition, this invention is not limited to the above-mentioned embodiment. For example, in the above embodiment, the heater contact preventing member 82 is provided with a plurality of slits 82a, but only one slit may be provided or may not be provided at all.

  Moreover, in the said embodiment, although the slit 82a was provided in the said heater contact prevention member 82, you may provide through-holes of other shapes, such as a circular through-hole of the magnitude | size which cannot pass a fingertip.

  Moreover, in the said embodiment, although the said slit 82a was provided in the position which substantially opposes the drain hole 32a, you may be provided in the position which does not oppose the drain hole 32a.

  Moreover, in the said embodiment, although the said slit 82a was extended in the direction orthogonal to the said plate member 81, it is not restricted to this, For example, you may extend in parallel with the said plate member 81. .

  In the above embodiment, the heater contact prevention member 82 is integrally connected to the plate member 81. However, the heater contact prevention member 82 is separated from the plate member 81 and is detachably attached to the plate member 81. It may be.

  In the above embodiment, the heater contact prevention member 82 is integrally connected to the plate member 81, and the plate member 81 is attached to the peripheral wall portion 322. However, the heater contact prevention member 82 is separated from the plate member 81. The heater contact preventing member 82 may be directly attached to the peripheral wall portion 322 as a body.

  In the above embodiment, the heater contact prevention member 82 is integrally connected to the plate member 81, and the plate member 81 is attached to the peripheral wall portion 322. However, the plate member 81 is eliminated and the heater contact prevention member 82 is removed. May be attached to the peripheral wall portion 322 alone.

  Moreover, in the said embodiment, although the hot water storage tank 2 was one, it is good also as two or more.

DESCRIPTION OF SYMBOLS 1 Heat source unit 2 Hot water storage tank 32 Bottom frame 32a Drain hole 40 Heater 80 Back panel 82 Heater contact prevention member 82a Slit

Claims (3)

A bottom frame (32) having a drain hole (32a) for discharging drain water;
A heater (40) for preventing the drain water from freezing;
A heater contact prevention member (82) positioned between the drain hole (32a) and the heater (40) and spaced from the drain hole (32a) and the heater (40) ;
The heater contact preventing member (82) has at least one through hole (82a) . The heat source unit according to claim 1 ,
The heat source unit, wherein the heater contact preventing member (82) is a part of a back panel (80) attached to the bottom frame (32). The heat source unit (1) according to claim 1 or 2 ,
A hot water supply system comprising a hot water storage tank (2) for storing hot water heated by the heat source unit (1).

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