JPS60251334A - Heat pipe defrosting device for heat exchanging and ventilating fan - Google Patents

Abstract

PURPOSE:To permit to defrost the frozen heat pipe by simple structure and operation by a method wherein an opening and closing device, operating dampers for both of cold air and warm-air flow paths in conjunction with the damper for a partitioning plate partitioning both air flow paths, is provided in the device. CONSTITUTION:The heat pipe defrosting device 1 is consisting of blind-like dampers 15, 16, 17, attached to the inlet port 5a of the cold air flow path, the outlet port 6 of the warm-air flow path and a communicating port 4a provided near the end at an outdoor side S, and the opening and closing device 9 for respective dampers. Under normal ventilating condition, respective shielding plates 22 for the dampers 15, 16 are opened in parallel to each other and the inlet port 5a of the cold air flow path and the outlet port 6a of the warm-air flow path are opened. On the contrary, respective shielding plates 22 of the damper 17 are titled and the communication port 4a is closed. When the heat pipe 12 at X section begins to be frozen, knob 27 is pulled down, the dampers 15, 16 are closed and the damper 17 is opened. According to this method, warm-air in a room R circulates through the inside of the fan 2 and frozen dew water may be defrosted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field J] This invention relates to a heat-vib thawing device for a heat exchange ventilation fan.

[Background technology]

A heat exchange ventilation fan is used that is installed at the boundary between indoors and outdoors and uses a fan to perform forced ventilation through air supply and exhaust ports that open indoors and outdoors. When this type of ventilation fan is used in a cold region during the winter, warm exhaust air from indoors may condense on the heat vibrations and fins of the heat exchange element, which may freeze due to the cold outside air.

In particular, there was a high possibility that freezing would occur in the area near the outdoor area S shown by section X in FIG. When freezing occurs, a serious problem arises in that the heat exchange vehicle is lowered and the pressure loss due to clogging of the fins 11 increases.

Furthermore, when freezing occurs over a wide area, the ventilation fan 2 itself may become unusable.

As a method of preventing the above freezing, there is a method of placing a heater in the warm air duct 6 around the X part and turning on this heater to thaw when freezing starts to occur, but this method is used for purposes other than ventilation. Therefore, it is uneconomical to install a separate heater.

As another anti-freezing method, as shown in FIGS. 2(a) and 2(b), the inlet 5a of the cold air duct 5 and the outlet 6a of the warm air duct 6 are opened and closed, and when defrosting with a heat vibrator, Same figure (
As shown in b), by closing these entrances and exits 5a and 6a, and removing the vicinity of the outdoor S side end 4a of the partition plate 4 to form a hole leading to the drawing path, the warm air inside the room is removed by the ventilation fan. A method of circulating the air within the 2nd chamber was considered, but this required opening and closing each entrance and exit and the ends of the partition plates separately. It's so annoying,
It wasn't practical.

[Purpose of the invention]

The present invention was made in view of the above circumstances, and an object of the present invention is to provide a heat vibrator defrosting device for a heat exchange ventilation fan that has a simple structure and is easy to operate, and is capable of defrosting a frozen heat vibrator. The purpose is

[Disclosure of the invention]

That is, the heat vibrator defrosting device according to the present invention is
A heat exchange element for exchanging heat between the cold air and warm air in the air flow path using a heat vibrator is provided in the intermediate portion of the cold air air path and the warm air air path, and the configuration is such that ventilation is performed by forced ventilation means such as a fan. This is a defrosting device for a heat vibrator in a heat exchange ventilation fan, in which a damper that can be opened and closed is provided at the inlet of the cold air path, the outlet of the warm air path, and a partition plate that separates the air path. When the damper of the air flow path is in the open state, the turner of the partition plate is in the closed state, and conversely, when the damper of the cool air flow path is in the closed state, the damper of the partition board is in the open state. It is characterized by the installation of a device.

Hereinafter, embodiments will be described based on the accompanying drawings.

FIG. 3 (ω, (b) shows an example of the heat-vib thawing device according to the present invention, and the heat-vib thawing device l has the same shape as the heat exchange ventilation fan shown in FIG. 2. It is provided in the replacement ventilation fan 2.

In this heat exchange ventilation fan 2, the inside of the casing 3 is divided into two spaces, upper and lower, by a partition plate 4 integrally provided in the middle of the casing 3, with the space -A being the cold air passage 5, and the space below being the space below. There are 6 warm air channels. Each air passage 5,
Fans 9 and 9' driven by a common motor 8 are disposed on the R side of the room 60, and are configured to force-feed cold air and warm air in a predetermined direction. Further, the middle part of the ventilation fan 2 is a heat exchange element part 13 in which a plurality of fin type heat pipes 12 penetrating into the cooling/heating air channels 5 and 6 are installed.

The heat-vib thawing device 1 includes a blind-shaped damper 15 attached to an inlet 5a of a cold air path, an outlet 6a of a warm air path, and a vent 4a provided near the outdoor S side end of the partition plate. .16, 17 and opening/closing devices 19 for each of these dampers. Each damper 15, 16, 17 has a shielding plate 22 rotatably fitted into each of a plurality of horizontal ribs 21, each of which has a stepped overlapping portion 22a formed at its tip. The shielding plate 22' located at the end is made of a magnet, and when the opening is closed, it magnetically attaches to the outer frame 23 of the opening, thereby improving the sealing performance. As the opening/closing device 19, one is installed on the lower inner surface of each of the cold air passage outlet 5a and the warm air passage outlet 6a.
Each roller 24, 24' is provided with a string 25, which is bifurcated from the middle part to the tip part. One branch 25a of the string 25
is attached to the tip y#1 of each shielding plate 22 of the damper 15,
The other branch 25b is attached to the tip of each shielding plate 22 of the damper 17, and the integrated base 25c is similarly attached to the tip of each shielding plate 22 of the damper 16.
The lower end 25d of the small hole 26 provided in the casing 3
It hangs out of the casing from the top and has a knob 27 at its tip.
is installed.

In addition to this string 25, a blind type damper 15,
A similar return string 25' is provided which pulls 16.17 in the opposite direction to the string 25.

FIG. 3(a) shows a normal ventilation state. At this time, the dampers 15 and 16 are in a state where each shielding plate 22 stands up parallel to each other, so cold air and warm air are transferred to the shielding plate 2.
can freely flow through the gap between the two. On the contrary, in the damper 17, each quick loading plate 22 is laid down, closing the through hole 4a. When closed, the overlapping portion 22 of the shielding plate 22
a overlaps the shielding plate 22 which is in contact with the shielding plate 22, and
22' is magnetically attached to the partition plate 4, so that the cold air passage 5 and the hot air passage 6 are kept sufficiently airtight. , shielding plate 22'
Instead of forming the shielding plate 22' with a magnet, the shielding plate 22' may be biased in the closing direction with a spring or the like.

Next, when the heat vibrator 12 in the X section begins to freeze, pull down the knob 27 to create the state shown in FIG. 3(b), that is, the damper 15, 16 is closed and the damper 17 is fully opened . At this time, the dampers 15 and 16 are kept airtight, similar to the damper 17 in FIG. 3(a). If the operation continues in the state shown in the figure, the ventilation in the hot air path 6 passes through the hole 4a in which the damper 17 is provided, enters the cold air path SVC, and circulates back to the indoor room R. In this way, indoor warm air circulates inside the ventilation fan 2.
Frozen condensed water is thawed. In addition, in order to drain this thawed dew water, it is preferable to provide a drainage groove at the bottom of the casing 3. From this thawed state, Figure 3 (a)
In order to return to the ventilation state, the string 25' that opens and closes the damper in the opposite direction to the string 25 can be pulled.

As explained above, ventilation and defrosting can be switched by simply pulling down the strings 25 and 25'.
The switching operation is extremely simple.

Furthermore, as shown by the chain line in FIG. 3(b), a temperature sensor or a humidity sensor 30 is provided near the X section, and a controller 31 linked to the sensor 30 controls each of the dampers 15, 16, . Automatically controlling the opening and closing of 17 is convenient because ventilation and defrosting can be automatically switched. In this case, the shielding plate 22' of the damper 16 is made of a magnetic material, and the part where the shielding plate 22' overlaps is made into an electromagnet 33. When the temperature or humidity of the X section exceeds a predetermined value, the controller 31 is activated. If the configuration is such that current flows through the electromagnet 33, the operation will be more reliable.

〔Effect of the invention〕

As is clear from the above description, the heat pipe defrosting device for a heat exchange ventilation fan according to the present invention has a simple structure and can be manufactured at low cost. be.

[Brief explanation of drawings]

Figure 1 is a perspective view of a conventional heat exchange ventilation fan that is not equipped with a heat pipe thawing device, and Figure 52 is a side view of a heat exchange ventilation fan that is equipped with a conventional heat pipe thawing device.
＞<1 (a) shows normal luck, and (b) shows rain when thawing. FIG. 3 is a cross-sectional view of an example of the heat pipe thawing device according to the present invention, and FIGS. 3(a) and 3(b) show the state during normal operation and FIG. 3(b) during thawing operation. ■... Heat pipe thawing device 2... Heat exchange ventilation fan 3... Gauging 4a... Ventilation hole 5... Cold air channel 5a... Cold air channel population 6... Warm air channel 6
a...Warm air channel population 9,9'...Fan 12...
・Heat vibe 13...Heat exchange element part 15
．． 16.17...Damper 19...Switching device 25
, 25'... String 30... Sensor 31... Controller agent Patent attorney Takehiko Matsumoto

Claims (1)

[Claims] (1) A heat exchange element is installed between the cold air path and the warm air path to exchange heat between the cold air and warm air in the air path using a heat vibrator, and ventilation is performed using forced ventilation means such as a fan. A defrosting device for a heat vibrator in a heat exchange ventilation fan configured as above, wherein a damper that can be opened and closed is provided at the entrance of the cold air path, the outlet of the warm air path, and a partition plate that separates the air path. , When the damper of the cooling/heating air flow path is in the open state, the damper of the partition plate is in the closed state, and conversely, when the damper of the cooling/heating air flow path is in the closed state, the damper of the partition plate is in the open state. A heat vib thawing device for a heat exchange ventilation fan, characterized in that it is equipped with an operating opening/closing device.