JPS64523Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an air conditioning ventilation fan that exhausts indoor air and supplies outside air into the room through a heat exchanger.

As is well known, air conditioning ventilation fans incorporate a heat exchanger that exchanges heat between the supply air flow and the exhaust air flow.
The heat exchanger is assembled so that it can be easily removed for maintenance and inspection. Some air conditioning ventilation fans display the temperature of the air supply flow to show the effectiveness of heat exchange. However, in this type of conventional device, as shown in FIG.
In most cases, one of the heat exchangers 102 is held against the retaining plate 103 on the end face of the heat exchanger 102 so that its heat-sensitive portion faces the opening surface 104 of the heat exchange passage of the heat exchanger 102. When removing the
Failure to remove the temperature sensing element 101 was likely to cause damage to the lead wire 105 of the sensing element 101. In addition, the heat exchanger 102
Since the sensing element 101 must be operated each time it is removed, the sensing element 101 is likely to deteriorate or be damaged.

An object of the present invention is to provide an air conditioning ventilation fan in which a heat exchanger can be attached and detached without attaching or detaching a temperature detection element, and the detection element is less likely to be damaged by deterioration.

Next, the configuration of the present invention will be specifically explained based on an embodiment shown in the drawings.

The air conditioning ventilation fan as an application example of the present invention whose main parts are shown in FIGS. 2 and 3 has a heat exchanger 2 fitted vertically to one side of the main body 1. The heat exchanger 2 can be removed by removing a front cover 3 attached to the front of the heat exchanger 2 and pulling it forward. heat exchanger 2
In this case, the outlet surface 2A where the outlet side of the heat exchange passage through which the air supply flow passes is open, and the inlet face 2B where the inlet side of the heat exchange passage through which the exhaust air flow passes are open, each facing the front at an angle of about 90 degrees. It is inserted and attached to the main body 1 in this position. The heat exchanger 2 is provided with retaining plates 4 extending forward from the outlet surface 2A and the inlet surface 2B at its upper and lower ends. This holding plate 4 forms a holding frame of the heat exchanger 2 together with a frame that holds the edge portions of the elements of the heat exchanger 2 . In the illustrated embodiment, the upper holding plate 4 is integrally provided with a side plate portion 4A that serves as a partition wall that partitions the air supply/exhaust path in the assembled state. However, all of the above-mentioned configurations have already been adopted in conventional systems, and the configurations of other blowers and the like are basically the same as those of conventional systems. That is, the feature of this example is that the heat exchanger 2
, a notch 6 is made in the side surface of the lower retaining plate 4 corresponding to the outlet surface 2A in a direction perpendicular to the pull-out direction for removing the heat exchanger 2.
The main body 1 housing the heat exchanger 2 rotates in a vertical plane with respect to the lower part of the heat exchanger housing to engage the notch 6 and release from the heat exchanger housing. This is because the rotating lever 7, which allows for withdrawal, is pivotally mounted. The rotating lever 7 is in the shape of a key with three bent portions at approximately right angles, and is formed of a band-shaped metal material, with its free end facing forward and a U-groove-shaped holder in the center of the width direction. The flat portion 9 adjacent to the free end side of the rotary lever 7 in which the portion 8 is formed is within the vertical plane in which the notch 6 of the heat exchanger 2 in the installed state is located, and the portion 9 is located within the vertical plane in which the notch 6 of the heat exchanger 2 in the installed state is located. Accordingly, it can engage with the notch 6. Then, a holder portion 8 at the free end of the rotating lever 7
A detection element 10 is attached to detect the temperature of the supply air flow exiting the heat exchange passage of the heat exchanger 2. If the rotary lever 7, which is also the mounting member for the temperature detection element 10, is rotated to engage the flat portion 9 with the notch 6 of the heat exchanger 2,
The heat exchanger 2 is held in the main body 1 without detaching, and the detection element 10 is held facing the outlet surface 2A of the heat exchanger 2. To remove the heat exchanger 2, it is sufficient to rotate the rotary lever 7 to disengage the notch 6 and withdraw it from the heat exchanger housing, and the heat exchanger 2 can be removed from the detection element 10. This is possible without any operations. Therefore, maintenance and inspection of the heat exchanger 2 can be carried out easily.
Maintenance and inspection of the heat exchanger 2 will not damage or deteriorate the detection element 10.

As is clear from the above explanation based on the embodiments, the air conditioning ventilation fan of the present invention has a rotating lever provided on the main body side that holds a detection element for detecting temperature, etc., and the rotating lever is connected to a heat exchanger attached to the main body. Since it can be rotated into engagement with the notch that is formed and can be rotated away and removed to a position that does not interfere with the extraction of the heat exchanger, the heat exchanger can be attached and detached without requiring the detection element to be attached and detached. This not only prevents the detection element from being damaged or deteriorated due to maintenance and inspection of the heat exchanger, but also prevents the heat exchanger from being removed because the rotary lever restricts the removal of the heat exchanger. The heat exchanger does not come off with careless operation.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a conventional air conditioning ventilation fan with the front cover removed; Fig. 2 is a perspective view showing the main parts of an air conditioning ventilation fan as an application example of the present invention with the front cover removed; FIG. 3 is a perspective view of the main parts showing the form when the heat exchanger is removed. Note that the same reference numerals in the figures indicate the same or equivalent parts. DESCRIPTION OF SYMBOLS 1... Main body, 2... Heat exchanger, 2A... Outlet surface, 2B... Inlet surface, 4... Holding plate, 6... Notch, 7... Rotating lever, 8... Holder part, 9... …
Planar part, 10...detection element.

Claims (1)

[Scope of utility model registration request] The main body is placed in a position in which it can be pulled out in the direction facing the exit surface 2A where the exit side of the heat exchange passage that passes the air flow into the room is open, and the inlet face 2B where the inlet side of the heat exchange passage that passes the exhaust air flow to the outdoors is open. 1, and has a retaining plate 4 protruding from the outlet surface 2A and the inlet surface 2B for holding the end surface in the removal direction, and is designed to exchange heat between the supply air flow and the exhaust air flow. A type heat exchanger 2 is provided, and the heat exchanger 2 is provided with a notch 6 in a direction substantially perpendicular to the drawing direction of the heat exchanger 2 in a protruding portion corresponding to the outlet surface 2A of the retaining plate 4. At the same time, the main body 1 side has a groove that can be rotated to move away from the projection plane of the heat exchanger 2 without interfering with the pull-out direction of the heat exchanger 2, and that can be rotated to engage with the notch 6. An air conditioning ventilation fan having a structure in which a key-shaped rotating lever 7 is pivotally mounted, and a temperature detecting element 10 for detecting the outlet temperature of the supply air flow is held at the free end of the rotating lever 7. .