JPH0735496A - Heat exchanger - Google Patents

Abstract

PURPOSE:To provide a heat exchanger which can be minimized in a range in which condensed water is not scattered and fed to a room having a blower. CONSTITUTION:A heat exchanger comprises an evaporator 1, a blower 2 sequentially arranged in an air flow passage, wherein, when a height and a thickness of the evaporator 1 are H01, H02, a height of a partition provided at an inlet and an outlet of a room in which the evaporator 1 is arranged is H3, a distance between a room having a blower and the evaporator 2 is H1, a height of a partition of the inlet of the room having the blower 2 is H2, the following formulae are satisfied. 0.05H01<=H3<=0.1H01. H2>H3. H1<=0.5H02.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchange device applied to an air conditioner.

[0002]

2. Description of the Related Art A side sectional view of a conventional heat exchanger system is shown in FIG.

In the figure, reference numeral 1 is an evaporator, and 2 is a blower, which are incorporated in an air passage 3. In addition, 4 is a room for storing the evaporator 1, 6 is a room for installing the blower 2,
Reference numeral 12 denotes a room that is provided between the rooms 4 and 6 and is provided as a falling space so that condensed water (dew drops) from the evaporator 1 does not reach the blower 2.

[0004]

The above conventional heat exchanger system has the following problems to be solved.

That is, in order to ensure the absence of condensed water that flows from the evaporator 1 to the blower 2, the side of the room 12 (right and left in the figure)
Since it was easy to make the length of the direction sufficiently long, the heat exchanger system became large, the installation space was large, and the cost and weight were increased.

In order to solve the above problems, the present invention finds a qualitative relationship among the size of the evaporator, the distance to the room accommodating the blower, and the partition height between the rooms related to the ventilation opening area. Based on this, it is an object to provide a heat exchange device in which the distance between the evaporator and the blower is minimized.

[0007]

Means for Solving the Problems As a means for solving the above problems, the present invention relates to a heat exchange device in which an evaporator and a blower are sequentially arranged in an air flow passage, and the height of the evaporator is H ₀₁ , The thickness is H ₀₂ , the height of the partition provided at the entrance and the exit of the room where the evaporator is installed is H _3, and the distance between the room where the blower is installed and the evaporator is H ₁ , A heat exchange device that satisfies the following conditions when the height of the partition at the entrance of the room in which the blower is installed is H ₂ .

[0008] is intended to provide a _{0.05H 01 ≦ H 3 ≦ 0.1H 01} H 2> H 3 H 1 ≦ 0.5H 02.

[0009]

Since the present invention is constructed as described above, it has the following actions.

That is, the amount of condensed water that reaches the room of the blower from the evaporator depends on the height of the evaporator and the thickness in the direction of the flow path, the height of the partition on the outlet side of the evaporator room, the room from the evaporator to the room of the blower. It depends on the distance to the room, the height of the partition on the inlet side of the fan room, etc., but as a result of various tests, the room of the fan for the distance from the evaporator to the room of the fan and the height of the partition on the outlet side of the evaporator room The ratio of the height of the partition on the inlet side is strongly related. For a constant capacity evaporator, a constant wind speed, and a blower with a fixed air volume, the distance from the downstream end of the evaporator to the partition on the inlet side of the blower room is H ₁ , the blower storage box ( When the amount of condensed water flowing in (synonymous with the room) (the amount of dewdrop water that flows in and out) is Q and the distance H ₁ is a function of the thickness H _{02 in} the flow path direction of the evaporator, there is a relationship as shown in FIG. I found out. H ₂ is the height of the partition on the inlet side of the blower room, and H ₃ is the height of the partition on the outlet side of the evaporator room.

That is, when H ₁ becomes smaller, Q increases and H ₂
Becomes larger, Q decreases.

On the other hand, H ₃ is the height of the partition on the outlet side of the chamber of the evaporator as described above, but making it too high narrows the cross-sectional area of the air flow passage, lowering the efficiency and lowering it. If too much, it concentrates below the evaporator and overflows the condensate that tends to overflow, which tends to be one of the causes of scattering to the downstream side.
_{It was found that 3} has its own height limit and its range is preferably about 5 to 10% of the height H ₀₁ of the evaporator. H ₂ is also effective in the blower, and from the point of narrowing the air flow to the extent that it does not cause a large flow path resistance,
Make sure that the droplets (condensed water) that have passed near the top of H ₃ are H
It is preferably higher than H ₃ from the standpoint of being blocked by the height of ₂ and falling to the upstream side. Therefore, if the lower limit of H ₂ is set to the height of H ₃ , that is, H ₂ = H ₃ , then H
The upper limit of ₁ is 0.5H ₀₂ from FIG.

Therefore, according to the above configuration, the upper limit of H ₁ that most contributes to the size of the heat exchange device can be known by giving the condition that Q is zero.

H₁The lower limit of Q is H₂
H depends on ₂Aligned with the decision of
Decide. Incidentally, according to FIG. 2, H₂= H₃When H
₁Has no particular lower bound, so H₁≒ 0.5H₀₂When
Almost uniquely determined, but for example H₂= 2H₃In the case of
The lower limit is 0.3H₀₂Is an appropriate value. Therefore H₁Is 0.3H
₀₂~ 0.5H₀₂You can choose from within. In this case, 0.3H₀₂
However, as shown in Fig. 2, Q is near zero, and that is more heat exchange.
Although it is desirable only from the viewpoint of the size of the replacement device,
From the top of the line to make Q zero, ~ 0.5
H₀₂Is a safety margin. That is, the size of the heat exchange device is limited.
0.3H when placing a weight on₀₂The side closer to the
0.5H when placing emphasis on moisture protection of the machine₀₂Adopt the side closer to
Make a choice such as doing.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. The same components as those in the conventional example are designated by the same reference numerals,
The description is omitted unless necessary.

FIG. 1 is a side sectional view of a heat exchange device according to the present embodiment, and FIG. 2 is a relational diagram between the amount of condensed water flowing into a fan storage box (synonymous with a room) and the size of a main partition of the heat exchange device. .

In FIG. 1, 5 is a partition on the inlet side of the room 4, 7 is a partition on the inlet (upstream) side of the room 6 in which the blower 2 is housed, 8 is condensed water (dew drop) generated in the evaporator 1, 9 is an arrow schematically showing the air flow (air flow), 10 is the room 4
Is a lower drainage hole formed in the bottom of the room 4, 11 is a partition on the outlet side of the room 4, and 13 is a drain discharge hole formed in the bottom of the room 12.

The symbols are H as described in the section of action.
₁ is the distance from the downstream end of the evaporator 1 to the partition 7 on the inlet side of the room 6 of the blower 2, that is, the width of the room 12 in the air flow direction,
H ₂ is the height of the partition 7, H ₃ is the height of the partition 11, H ₀₁
Is the height of the evaporator 1 (corresponding to the height of the room 4), and H ₀₂ is the thickness of the evaporator 1 in the air flow path direction.

Next, the operation of the above configuration will be described.

In FIG. 1, H ₃ is formed in the range of 5 to 10% of H ₀₁ , and H ₂ is formed to be slightly larger (higher) than H ₃ . H ₁ is shown to be larger than the actual ratio for the sake of convenience of reference numerals and the like, but it is formed to be about 1/2 or less of H ₀₂ . Therefore, according to FIG. 2, the curve of Q with respect to H ₁ exists near the middle of the case of H ₂ = H _{3 and} the case of H ₂ = 2H _{3 in} the figure, and even if Q is set to 0, H ₁ Is 0.5H ₀₂ or less, and an extremely compact heat exchange device can be obtained.

The behavior of the condensed water 8 and the like is as follows.

When the air stream 9 passes through the evaporator 1, the condensed water 8 flows out of the system through the lower drain hole 10. Also air flow 9
Even if a part of the condensed water 8 is carried out from the lower part of the evaporator 1 by the above, it falls into the room 12 between the outlet side of the evaporator 1 and the room 6 housing the blower 2, and the drain of this room 12 is drained. The air flow 9 is discharged from the discharge port 13 to the outside of the system, and flows into the room 6 of the blower 2 without having the condensed water 8.

Even if the room 6 for accommodating the other blower 2 accommodates a heater (not shown) or is simply the outlet of the air flow 9, it can be widely implemented in any case.

As described above, according to the present embodiment, the condensed water 8 is not dropped into the room 12 or the like, and is not discharged into the room 6 of the blower 2, and the width H _{1 of the} room 12 is minimized. There is an advantage that a lightweight heat exchange device can be obtained.

As a result, there is an advantage that the manufacturing cost can be reduced.

[0026]

Since the present invention is constructed as described above, it has the following effects.

That is, according to the present invention, the distance between the room in which the evaporator is installed and the room in which the fan is installed is related to the height of the partition of each room, the height and thickness of the evaporator, and the room of the fan. Since it is possible to determine the minimum value of the range in which the condensed water does not flow in, it is possible to obtain a compact, high-performance, compact, low-cost heat exchange device in which the condensed water dew does not re-spray.

[Brief description of drawings]

FIG. 1 is a side sectional view of a heat exchange device according to an embodiment of the present invention,

FIG. 2 is a diagram showing the relationship between the amount of condensed water flowing into the fan storage box and the size of the main partition of the heat exchange device according to the above embodiment,

FIG. 3 is a side sectional view of a conventional heat exchanger system.

[Explanation of symbols]

 1 Evaporator 2 Blower 3 Air passage 4 Room 5 Partition 6 Room 7 Partition 8 Condensed water 9 Airflow 10 Lower drain hole 11 Partition 12 room 13 Drain discharge hole

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masatoshi Mitsui Masatoshi Mitsui, No. 1 Takamichi, Iwazuka-cho, Nakamura-ku, Nagoya City Mitsubishi Heavy Industries, Ltd. Nagoya Research Institute (72) Masao Sawada 3 Asahi-cho, Nishibiwajima-cho, Nishikasugai-gun, Aichi Prefecture 1-chome, Mitsubishi Heavy Industries, Ltd. Air Conditioning Factory

Claims (1)

[Claims] 1. In a heat exchange device in which an evaporator and a blower are sequentially arranged in an air flow passage, the height of the evaporator is H.
₀₁ , the thickness is H ₀₂ , the height of the partition provided at the entrance and the exit of the room where the evaporator is installed is H _3, and the distance between the room where the blower is installed and the evaporator is H _1, when the partition of the height of the entrance of the room to dispose the blower was H _2,
A heat exchange device that satisfies the following conditions. 0.05H ₀₁ ≤H ₃ ≤0.1H ₀₁ H ₂ > H ₃ H ₁ ≤0.5H ₀₂