JPH11141903A - Indoor system for hot water heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an indoor system for hot water heater which can prevent the surface temperature of a front panel from rising and ensure safety, by providing a heat intercepting plate for intercepting heat of hot air at the front of a heat exchanger. SOLUTION: A hot water heater which is constituted of a base 2, and an outer trunk for covering the base 2 which is provided with an inlet port 3a at the upper back portion thereof, and an outlet port 4a at the lower front portion thereof, comprises a casing body 6 arranged above the base 2, a heat exchanger 7 arranged at the upper back portion of the casing body 6 in face-to- face relation with the inlet port 3a, a blower fan 8 for blowing air into a room through the outlet port 4a which is arranged at the casing body 6 under the heat exchanger 7, and a heat intercepting plate 9 at the front side of the casing body 6 of the indoor system of the hot water heater.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a heat shield plate, called a fan convector, for shielding hot air from an indoor unit of a hot water heater.

[0002]

2. Description of the Related Art As shown in FIGS. 3 and 4, for example, a front panel 4 made of metal covering a front surface of a base 2 of a main body 1 is provided in a conventional hot water heater indoor unit (fan convector).
A rear cover 3 made of metal covering the back surface, and a side panel 5 made of metal covering the upper surface and both side surfaces, an outer body is formed, and a suction port 3a provided at an upper part of the rear surface of the rear cover 3; An outlet 4a is provided at a lower portion of the front of the front panel 4 and sends out warm air toward the room. An air passage connecting the inlet 3a and the outlet 4a is connected to an oil-fed hot water boiler (not shown). A heat exchanger 7 that receives and circulates the obtained hot water and radiates heat, and a blower fan 8 that sends out the hot air heat exchanged by the heat exchanger 7 toward the outlet 4a. A heat exchanger 7 is mounted on the upper part of the main body casing 6 'mounted on the upper part 2 and a blower fan 8 is mounted on the lower part, and the air sucked from the suction port 3a is removed by the heat exchanger 7
In this configuration, the hot air that has undergone the heat exchange is sent out from the outlet 4a toward the room.

However, the temperature of the hot water flowing into the heat exchanger 7 from the oil-fired hot water boiler is as high as about 80 ° C., so that the heat-exchanged hot air directly hits the rear side of the front panel 4 made of metal. If the surface temperature of the panel 4 rises and the user touches it, there is a possibility that a safety problem may occur.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has a heat shield plate for shielding hot air in front of a heat exchanger to prevent a rise in surface temperature of a front panel. It is an object of the present invention to provide a hot water heater indoor unit that can ensure safety.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has an outer base having a base, a suction port at an upper rear portion covering the base, and an outlet at a lower front portion. A body casing is mounted on the base, and a heat exchanger is provided on the upper rear surface of the body casing so as to face the suction port. A fan provided with a blower fan for sending air into a room from an outlet has a structure in which a heat shield plate is provided on the front side of the main body casing.

[0005] Further, a reinforcing rib extending diagonally on the plate surface of the heat shield plate and intersecting at the center is provided.

Further, the reinforcing rib is formed by a ridge protruding toward the front side or the back side of the heat shield plate.

[0007] Further, the heat shield plate has a configuration in which a black coating is applied to a side facing the heat exchanger.

[0008] The heat shield plate may be formed integrally with the casing.

[0009]

FIG. 1 is a block diagram showing an embodiment of the present invention.
A description will be given based on FIG. FIG. 1 shows a schematic configuration of an indoor unit of a hot water heater, and FIG. 2 is an exploded perspective view showing one embodiment of the present invention. In the figure, 1 is an indoor unit (fan convector) of a hot water heater, 2 is a base, 3
Is a metal rear cover that covers the back side of the base and has a suction port 3a at the top rear, and 4 is a metal front panel that covers the front side of the base and has an outlet 4a at the bottom front. Reference numerals 5 and 5 denote side panels provided between the front panel 4 and the rear cover 3 and covering the upper surface and side surfaces of the main body 1.

Reference numeral 6 denotes a main body casing mounted on the base 2, and 7 denotes a heat exchanger disposed on the upper rear surface of the main body casing 6 so as to face the suction port 3a and to incline the upper part forward. Although not shown, the heat exchanger 7 radiates heat while receiving and circulating a supply of hot water as a heat source obtained by an outdoor unit (oil-fed hot water boiler), so that the air sucked from the suction port 3a is heated. It is configured to be replaced.

Numeral 8 is provided in the main body casing 6 having a lower back surface of the heat exchanger 7 covered with an arc-shaped wall, and the heated hot air exchanged in the heat exchanger 7 is blown by the blower. Exit
This is a blower fan that sends out the room from 4a.

Reference numeral 9 denotes a heat shield plate provided in front of the heat exchanger 7 so as to face the heat exchanger 7. The heat shield plate 9 has a plurality of insertion holes 9a for inserting screws 10 on both left and right sides. On the other hand, a screw hole 6b corresponding to the insertion hole 9a is provided in the left and right side plates 6a of the casing 6, a screw 10 is inserted through the plurality of insertion holes 9a, and the screw 10 is screwed into the screw hole 6b. Thus, the heat shield plate 9 is configured to be attached to the casing 6.

The heat shield plate 9 extends diagonally for reinforcement and is provided with a reinforcing rib 9b crossing at the center. Further, the reinforcing rib 9b is formed by a ridge protruding toward the front side or the back side of the heat shield plate.
The heat shield plate 9 has a configuration in which black paint is applied to the side facing the heat exchanger 7 in order to improve heat absorption. Note that the heat shield plate 9 may be formed integrally with the casing 6.

In the above configuration, the heat shield plate 9 for shielding hot air is provided in front of the heat exchanger 7 so that the rear surface of the front panel 4 is not exposed to warm air.
The indoor unit of the hot water heater can prevent an increase in the surface temperature of the front panel 4 and can ensure safety.

[0015]

As described above, according to the present invention,
By installing a heat shield plate in front of the heat exchanger to block hot air, and by preventing hot air from hitting the back side of the front panel, it is possible to prevent the surface temperature of the front panel from rising, thus ensuring safety. It becomes an indoor unit of a hot water heater that can ensure the performance.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an indoor unit of a hot water heater showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a main part showing an embodiment of the present invention.

FIG. 3 is a schematic configuration diagram of an indoor unit of a hot water heater showing a conventional example.

FIG. 4 is an exploded perspective view of a main part showing a conventional example.

[Explanation of symbols]

 Reference Signs List 1 indoor unit (fan convector) 2 base 3 rear cover 3a inlet 4 front panel 4a outlet 5 side panel 6 main casing 6a side plate 6b screw hole 7 heat exchanger 8 blower fan 9 heat shield plate 9a insertion hole 9b reinforcing rib 10 screw

Claims (5)

[Claims] 1. A base casing comprising: a base; and an outer trunk having a suction port at an upper rear portion covering the base and an outlet at a lower front portion, and a main casing mounted on the base. A heat exchanger is provided facing the suction port on the upper rear surface of the heat exchanger, and a blower fan for sending air into the room from the air outlet is provided in the main body casing below the heat exchanger, An indoor unit for a hot water heater, wherein a heat shield plate is provided on a front side of a main body casing. 2. The heat shield plate extends diagonally to a plate surface of the heat shield plate,
The indoor unit for a hot water heater according to claim 1, wherein a reinforcing rib intersecting at the center is provided. 3. The indoor unit of a hot water heater according to claim 2, wherein said reinforcing rib is formed by a ridge projecting from a front side or a back side of said heat shield plate. 4. The indoor unit of a hot water heater according to claim 1, wherein a black coating is applied to a side of the heat shield plate facing the heat exchanger. 5. The indoor unit of a hot water heater according to claim 1, wherein the heat shield plate is formed integrally with the casing.