JP2013217542A - Counterflow type heat exchange element, and heat exchange type ventilation apparatus using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce power consumption of blowing means of a heat exchange type ventilation apparatus since a counterflow type heat exchange element can suppress flexure of a heat exchanger plate without increasing a pressure loss.SOLUTION: A counterflow type heat exchange element 11 has an air exhaust path 14 and an air supply path 15 constructed alternately, layer by layer, by stacking a plurality of heat transfer means each including interval holding means of holding an interval, and can suppress flexure of a heat exchanger plate without increasing a pressure loss since an exhaust air flow 1 flowing in the air exhaust path 14 and a supply air flow 2 flowing in the air supply path 15 are orthogonal or oblique at both ends and face each other at a center portion between both the ends, and the air exhaust path 14 and air supply path 15 are parallel and corrugated at the center part.

Description

  The present invention relates to a counterflow type heat exchange element and a heat exchange type ventilation device using the same.

  In recent years, with the global warming, the energy saving in the residential field has become important. Since the energy consumption of hot water supply, lighting, and air conditioning is relatively large among the energy consumption of houses, a technology for reducing these energy consumptions is desired.

  Focusing on the air conditioning load of the house, there is heat that escapes from the housing of the house (cooling in the case of cooling) and heat that escapes due to ventilation. The heat escaping from the housing of housing has been significantly reduced due to the significant improvement in heat insulation and airtightness of the housing in recent decades. On the other hand, in order to reduce the heat escaped by ventilation, a heat exchange type ventilator that exchanges heat between the exhaust flow and the supply airflow is effective.

  The heat exchange element exchanges heat between the exhaust flow and the supply air flow inside the heat exchange type ventilation device, and the higher the heat exchange efficiency of the heat exchange element, the more heat can be recovered from the exhaust air. . Further, from the viewpoint of energy saving, it is important to reduce the pressure loss of the heat exchange element in order to reduce the power consumption of the blower of the heat exchange type ventilation device. Many ideas have been proposed so far for improving the heat exchange efficiency of the heat exchange element and reducing the pressure loss.

  Generally, if the volume of the heat exchange element is increased, the heat exchange efficiency is improved and the pressure loss is reduced. However, in areas such as Japan, China, and Europe, there is not enough space to install heat exchange type ventilation equipment such as basements and machine rooms inside the house, so it is required to make the equipment itself compact. Therefore, it is an object to achieve both improvement in heat exchange efficiency and reduction in pressure loss while keeping the volume of the heat exchange element small.

  As a conventional heat exchange element of this type, a counterflow type heat exchange element is known in which an exhaust flow and a supply airflow are opposed to each other via a heat transfer plate (see, for example, Patent Document 1).

  Hereinafter, the counterflow type heat exchange element will be described with reference to FIG. FIG. 6A is a perspective view showing the appearance of a conventional counter flow type heat exchange element 101, and FIG. 6B shows the spacing rib 102 obtained by removing the heat transfer plate 103 from the counter flow type heat exchange element 101. It is a top view.

  As shown in FIG. 6 (a), the counter-flow heat exchange element 101 is formed by stacking a plurality of hexagonal heat transfer plates 103 provided with spacing ribs 102 that maintain a spacing, and an exhaust air passage 104 and a supply air passage 105. Are alternately arranged, and an exhaust air flow 106 (solid arrow in the figure) flowing through the exhaust air flow path 104 and a supply air flow 107 (broken arrow in the figure) flowing through the air supply air flow path 105 are 104 and the supply air passage 105 are obliquely crossed at both ends, and are opposed to each other at the center between the both ends. In particular, the air passage at the center is fixed by making the interval rib 102 into a wave shape. Heat exchange efficiency is improved by lengthening the flow path of the exhaust air path 104 and the supply air path 105 within the volume.

JP-A-8-121986

  In such a conventional counter flow type heat exchange element, in addition to the configuration of the counter flow system having a high theoretical heat exchange efficiency, the air passage in the center portion is formed in a constant volume by making the interval rib 102 into a wave shape. Heat exchange efficiency is improved by lengthening the flow path of the exhaust air path 104 and the supply air path 105. If attention is paid to the pressure loss, the heat transfer plate 103 is held in a well shape by the upper and lower spacing ribs 102 at both ends where the exhaust air passage 104 and the supply air passage 105 cross each other as can be seen from FIG. Therefore, even when the exhaust air flow 106 and the air supply air flow 107 are circulated through the exhaust air flow passage 104 and the air supply air flow passage 105, respectively, the heat transfer plate 103 is hardly bent by the pressure of the air flow, and the increase in pressure loss is suppressed. be able to. On the other hand, in the central portion where the exhaust air passage 104 and the supply air passage 105 are opposed to each other, the interval rib 102 that holds the heat transfer plate 103 is wide. The opening area of 104 and the supply air path 105 decreases, and the pressure loss increases.

  Therefore, a configuration for suppressing the deflection of the heat transfer plate 103 at the center of the counter flow type heat exchange element will be described with reference to FIG. FIG. 7A is a plan view of a counterflow type heat exchange element 101 a that suppresses the deflection of the heat transfer plate 103 in the center of the exhaust airflow path 104 and the supply airflow path 105 of the conventional counterflow type heat exchange element 101. FIG. 7B is a sectional view taken along line FF in FIG. 7A is a view in which the heat transfer plate 103 is removed so that the internal configuration of the counterflow type heat exchange element 101a can be easily understood, and FIG. 7B is a view of the exhaust air flow path 104 and the supply air flow path 105. In order to facilitate understanding of the cross section, the heat transfer plate 103 is shown by dotted lines and diagonal lines.

  As shown in FIG. 7 (a), the counter-flow heat exchange element 101a suppresses the deflection of the heat transfer plate 103 in the central portion in the central air passage of the exhaust air passage 104 and the supply air passage 105. In this configuration, the grid-like reinforcing means 108 is provided. In FIG. 7A, one reinforcing means 108 is provided. However, if the number of reinforcing means 108 is appropriately set according to the size of the deflection of the heat transfer plate 103 and the size of the central portion of the counter flow type heat exchange element 101a. good. Since the reinforcing means 108 is provided, even when the exhaust air flow 106 and the air supply air flow 107 are circulated through the exhaust air flow passage 104 and the air supply air flow passage 105, respectively, the heat transfer plate 103 in the central portion is less likely to bend by the pressure of the air flow. Thus, an increase in pressure loss due to the deflection of the heat transfer plate 103 can be suppressed.

  However, as shown in FIG. 7B, since the reinforcing means 108 is inside the exhaust air passage 104 and the air supply air passage 105, the reinforcing means 108 itself becomes a resistance, and the exhaust air flow 106 and the air supply air 107 are further strengthened. When passing through the air, the air pressure decreases and expands rapidly, and the pressure loss of the airflow increases.

  As described above, in the counterflow type heat exchange element, the heat transfer plate 103 is formed without increasing the pressure loss in the central portion where the exhaust airflow 106 flowing through the exhaust airflow passage 104 and the supply airflow 107 flowing through the air supply airflow passage 105 face each other. There was a problem of suppressing the deflection of the.

  Therefore, the present invention solves the above-described conventional problem, and in the central portion where the exhaust air flowing through the exhaust air passage and the air supply air flowing through the air supply air passage are opposed to each other, the heat transfer plate is not increased without increasing the pressure loss. It is an object of the present invention to provide a counterflow heat exchange element that suppresses deflection. Another object of the present invention is to provide a heat exchange ventilator having an energy saving effect by reducing the power consumption of the air blowing means of the heat exchange ventilator by using the counter flow type heat exchange element.

  And in order to achieve this object, the present invention comprises a plurality of heat transfer means provided with interval holding means for holding intervals, and alternately configured exhaust air passages and supply air passages one by one, The exhaust airflow flowing through the exhaust air passage and the air supply air flowing through the air supply air passage are orthogonal or oblique at both ends of the exhaust air passage and the air supply air passage, and are opposed at the center between the both ends. The counterflow type heat exchange element is configured such that the exhaust air passage and the air supply air passage in the central portion have a waveform in parallel, thereby achieving the intended purpose. To do.

  According to the present invention, the counterflow type heat exchange element is configured such that the exhaust air passage and the supply air passage in the center are corrugated in parallel, so that the exhaust flow and the supply air passage that circulate through the exhaust air passage are circulated. The effect that the deflection of the heat transfer plate can be suppressed without increasing the pressure loss in the central portion where the air supply air faces is obtained.

  Moreover, you may make it the structure of the heat exchange type ventilation apparatus using the counterflow type heat exchange element as described in any one of Claim 1 to 3 of this invention. Thereby, the power consumption of the ventilation means of a heat exchange type | mold ventilation apparatus can be reduced, and the effect of providing the heat exchange type | mold ventilation apparatus with an energy-saving effect can be acquired.

The conceptual diagram which shows the structure of the heat exchange type | mold ventilation apparatus of Embodiment 1 of this invention. The perspective view which shows the external appearance of the counterflow type heat exchange element 11 (A) A plan view of the exhaust air passage side where the counterflow type heat exchange element 11 is disassembled, (b) a plan view of the supply air passage side where the counterflow type heat exchange element 11 is disassembled. The top view which removed the heat exchanger plate 12 from the counterflow type heat exchange element 11 (A) The top view which shows the structure of the counterflow type heat exchange element 11a of Embodiment 2 of this invention, (b) The top view which shows the structure of the counterflow type heat exchange element 11b (A) The perspective view which shows the external appearance of the conventional counterflow type heat exchange element 101, (b) The top view which remove | excluded the heat exchanger plate 103 from the counterflow type heat exchange element 101 (A) The top view which remove | excluded the heat exchanger plate 103 from the conventional counterflow type heat exchange element 101a, (b) 1 each of the exhaust air path 104 and the supply air path 105 of the center part of the counterflow type heat exchange element 101a. FF sectional view showing the shape of the layer

  The counterflow type heat exchange element according to claim 1 of the present invention is configured by stacking a plurality of heat transfer means each having a gap holding means for holding a gap, and alternately configuring an exhaust air passage and a supply air passage one by one. The exhaust air flowing through the exhaust air passage and the air supply air flowing through the air supply air passage are orthogonal or oblique at both ends of the exhaust air passage and the air supply air passage. The exhaust air flow path and the air supply air path in the central portion have a configuration that is corrugated in parallel. As a result, at both ends where the exhaust air passage and the supply air passage are orthogonal or obliquely crossed, the heat transfer means is held in a well shape by the upper and lower spacing holding means, so that the exhaust air passage and the supply air passage are exhausted respectively. Even when the flow and the supply airflow are circulated, the heat transfer means is hardly deflected by the pressure of the airflow, and it is possible to suppress the deflection of the heat transfer means without increasing the pressure loss. Further, in the central portion where the exhaust air passage and the air supply air passage are opposed to each other, the exhaust air passage and the air supply air passage are corrugated in parallel, so that the heat transfer means can be held by the upper and lower spacing holding means without using a special member. Because the structure is maintained in a substantially well shape, even when the exhaust air flow and the air supply air flow are circulated through the exhaust air passage and the air supply air passage, respectively, the heat transfer means is less likely to bend due to the pressure of the air flow, increasing the pressure loss. The effect that the deflection | deviation of a heat-transfer means can be suppressed is produced.

  Moreover, in the said center part, it has the structure that a waveform is reverse direction for every layer. As a result, in the central portion where the exhaust air passage and the supply air passage face each other, the exhaust air passage and the supply air passage can be configured to maintain a constant opening area. There is an effect that an increase in loss can be suppressed.

  Further, in the central portion, the apex portions of the reverse waveform or the peripheral portion including the apex portion of the reverse waveform overlap each other. As a result, the heat transfer means is held in a well shape by the upper and lower gap holding means without using special members, so that when the exhaust flow and the supply air flow are circulated through the exhaust air flow path and the supply air flow path, respectively. However, the heat transfer means hardly bends due to the pressure of the airflow, and there is an effect that the deflection of the heat transfer means can be suppressed without increasing the pressure loss. Further, in the central portion where the exhaust air passage and the supply air passage are opposed to each other, the apex portion of the exhaust air passage waveform interval holding means and the apex portion of the supply air passage waveform interval holding means overlap or the apex of the reverse waveform. By making the peripheral part including the part overlap, there is an effect that the vertical strength of the stack can be improved because the upper and lower spacing holding means are in contact with each other.

  Moreover, you may make it the structure of the heat exchange type ventilation apparatus using the counterflow type heat exchange element as described in any one of Claim 1 to 3 of this invention. This makes it possible to reduce the air-conditioning load due to ventilation of the building by installing a counter-flow type counter-current heat exchange element with high theoretical heat exchange efficiency, and counter-current type heat exchange without increasing pressure loss. Since the pressure loss can be reduced by suppressing the deflection of the heat transfer means of the element, the power consumption of the air blowing means of the heat exchange type ventilator can be reduced, and a heat exchange type ventilator having an energy saving effect is provided. There is an effect that can be.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a conceptual diagram showing a configuration of a heat exchange type ventilation device. As shown in FIG. 1, the heat exchange type ventilator has an exhaust flow and a supply air flow passage, an exhaust flow and a blowing means for blowing the supply air flow, and a counter flow type that exchanges heat between the exhaust flow and the supply air flow. It is composed of a heat exchange element.

  In the air flow path of the exhaust flow 1 (solid line arrow in the figure) and the supply air flow 2 (broken line arrow in the figure), the air flow from the inside air port 3 for introducing the inside air (RA) to the exhaust port 4 for exhausting the air to the outside (EA) An exhaust air supply path 8, an air supply air path 8 extending from an outside air inlet 6 for introducing outside air (OA) to an air supply opening 7 for blowing supply air (SA) into the room, and an exhaust air outlet from the inside air outlet 3 to the exhaust air supply path 5. Exhaust air blowing means 9 for generating an exhaust flow 1 directed to 4, an air supply air blowing means 10 for generating an air supply air flow 2 directed from the outside air port 6 to the air supply port 7 in the air supply air passage 8, A counter flow type heat exchange element 11 that exchanges heat between the exhaust air flow 1 that flows through the exhaust air passage 5 and the air supply air 2 that flows through the air supply air passage 8 is provided at a position where the air air passage 8 intersects. Yes.

  Here, the configuration of the counter flow type heat exchange element 11 will be described with reference to FIGS. 2, 3, and 4.

  FIG. 2 is a perspective view showing the external appearance of the counterflow type heat exchange element 11, and FIG. 3A is a plan view of the exhaust air passage side when the counterflow type heat exchange element 11 is disassembled. ) Is a plan view of the supply air passage side when the counterflow type heat exchange element 11 is disassembled, and FIG. 4 is a plan view of the counterflow type heat exchange element 11 excluding the heat transfer plate.

  As shown in FIG. 2 and FIG. 3, the counter flow type heat exchange element 11 is an interval holding unit that holds an interval between the heat transfer plate 12 having a substantially hexagonal outer shape as the heat transfer unit and the heat transfer plate 12. The spacing ribs 13 are provided, and these constitute the exhaust air passages 14 and the supply air passages 15 one by one alternately. The number of stacked layers is determined by the size and air volume of the heat exchange type ventilation device on which the counterflow type heat exchange element 11 is mounted.

  The heat transfer plate 12 has a role of exchanging heat between the exhaust flow 1 and the supply air flow 2. When only the temperature is exchanged, a metal or resin such as aluminum or copper is used for the heat transfer plate 12, and the temperature and When exchanging the humidity, paper or a moisture permeable film may be used for the heat transfer plate 12 and may be appropriately selected according to the purpose.

  The spacing rib 13 is made of resin or metal. In particular, the spacing rib 13 is preferably formed by integral molding by inserting the heat transfer plate 12 into a mold and insert injection molding with resin.

  As shown in FIG. 3, the exhaust air flow 1 that flows through the exhaust air passage 14 and the air supply air flow 2 that flows through the air supply air passage 15 are both ends of the exhaust air passage 14 and the air supply air passage 15 (B portion in FIG. 3 and This is a counter-flow type heat exchange element that is orthogonal to or obliquely crossed at D part (hereinafter omitted) and is opposed at the central part (C part in FIG. 3: omitted hereinafter) between both ends. In addition, the both ends in this specification refer to the range of B part and D part of FIG. 3, and a center part refers to C part of FIG. The central exhaust air passage 14 and the air supply air passage 15 have a waveform in parallel, and the waveforms are formed in opposite directions for each layer. The counter flow type heat exchange element 11 of the first embodiment includes a plan view on the exhaust air passage side when the counter flow type heat exchange element 11 of FIG. 3A is disassembled, and a counter flow type of FIG. 3B. The plan view on the side of the air supply path when the heat exchange element 11 is disassembled is a configuration that is line-symmetric with respect to the line AA.

  FIG. 4 is a plan view excluding the heat transfer plate 12 so that the internal configuration of the counterflow type heat exchange element 11 can be easily understood. As shown in FIG. 4, at both ends where the exhaust air passage 14 and the supply air passage 15 are orthogonal or obliquely crossed, the heat transfer plate 12 (not shown in the figure) is held in a well shape by the upper and lower spacing ribs 13. It is. Further, in the central portion where the exhaust air passage 14 and the supply air passage 15 are opposed to each other, the exhaust air passage 14 and the supply air passage 15 are corrugated in parallel, and the corrugations are reversed in each layer. (Deleted in the figure) is configured to be held in a substantially well shape by the upper and lower spacing ribs 13.

  The operation and effect of the heat exchange type ventilation device and the counter flow type heat exchange element configured as described above will be described below.

  As shown in FIG. 1, in the heat exchange type ventilation device, the exhaust air flow 1 introduces the inside air (RA) from the inside air port 3 by the operation of the exhaust air blowing means 9, passes through the exhaust air passage 5, and passes through the counter flow type heat exchange element. After passing through the exhaust air passage 14, the heat exchange with the air supply air 2 passing through the air supply air passage 15 of the counterflow heat exchange element 11 is performed and then discharged to the outside from the exhaust port 4. On the other hand, as the air supply air 2 is operated, the external air (OA) is introduced from the external air opening 6 through the air supply air blowing means 10, passes through the air supply air passage 8, and passes through the air supply air passage 15 of the counterflow type heat exchange element 11. Sometimes, after heat exchange with the exhaust flow 1 passing through the exhaust air flow path 14 of the counter flow type heat exchange element 11, the air is supplied into the room through the air supply port 7.

  The counter-flow heat exchange element 11 has a constant volume by forming the interval ribs 13 in a wave shape in addition to the counter-flow configuration having a high theoretical heat exchange efficiency, and the exhaust air passage 14 and the supply air passage 15 at the center. The heat exchange efficiency is improved by lengthening the flow path of the exhaust air path 14 and the supply air path 15.

  As shown in FIG. 4, the heat transfer plate 12 (not shown in the figure) is held in a well shape by the upper and lower spacing ribs 13 at both ends where the exhaust air passage 14 and the supply air passage 15 are orthogonal or obliquely crossed. Therefore, even when the exhaust air flow 1 and the air supply air flow 2 are circulated through the exhaust air passage 14 and the air supply air passage 15, respectively, the heat transfer plate 12 is hardly bent by the pressure of the air flow, and the pressure loss is not increased. In addition, the deflection of the heat transfer plate 12 can be suppressed. Further, in the central portion where the exhaust air passage 14 and the supply air passage 15 face each other, the exhaust air passage 14 and the air supply air passage 15 are formed in a waveform in parallel, and the waveforms are configured in reverse directions for each layer. Even if it is not used, the heat transfer plate 12 (not shown in the figure) is held in a substantially well shape by the upper and lower spacing ribs 13, so that the exhaust air flow 1 and the air supply air flow 2 are respectively supplied to the exhaust air passage 14 and the air supply air passage 15. When the heat transfer plate 12 is circulated, the heat transfer plate 12 is hardly deflected by the pressure of the airflow, and the deflection of the heat transfer plate 12 can be suppressed without increasing the pressure loss.

  Further, in the central portion where the exhaust air passage 14 and the air supply air passage 15 are opposed to each other, the exhaust air passage 14 and the air supply air passage 15 are configured to maintain a constant opening area. The increase can be suppressed.

  In this way, the heat exchange type ventilation equipment is highly effective in reducing the air conditioning load due to ventilation of the building by installing the counter flow type heat exchange element of the counter flow type with high theoretical heat exchange efficiency, and further increases the pressure loss. Therefore, it is possible to reduce the pressure loss by suppressing the deflection of the heat transfer plate of the counter-flow type heat exchange element without reducing the power consumption of the air blowing means of the heat exchange type ventilator. Exchangeable ventilation equipment can be provided.

(Embodiment 2)
Next, Embodiment 2 of the present invention will be described with reference to FIG. FIG. 5A is a plan view showing the configuration of the counter flow type heat exchange element 11a, and FIG. 5B is a plan view showing the configuration of the counter flow type heat exchange element 11b. In addition, in order to make it easy to understand the internal configuration of the counter flow type heat exchange element 11a and the counter flow type heat exchange element 11b, a plan view is shown in which the heat transfer plate 12 is removed.

  The same parts as those in the first embodiment are denoted by the same reference numerals and have the same operational effects, and detailed description thereof is omitted.

  As shown in FIG. 5a, the counter-flow heat exchange element 11a has a configuration in which the apexes of the waveform in the opposite direction overlap each other at the center. That is, at the central portion where the exhaust air passage 14 and the supply air passage 15 are opposed to each other, the apex portion of the corrugated spacing rib 13 of the exhaust air passage 14 and the apex portion of the corrugation spacing rib 13 of the supply air passage 15 are overlapped. .

  Next, as shown in FIG. 5b, the counter flow type heat exchange element 11b has a configuration in which the peripheral part including the apex part of the waveform in the opposite direction is overlapped in the central part. That is, in the central portion where the exhaust air passage 14 and the supply air passage 15 face each other, the peripheral portion including the apex portion of the corrugated interval rib 13 of the exhaust air passage 14 and the apex portion of the corrugation interval rib 13 of the supply air passage 15 are provided. The surrounding peripheral part overlaps, and the part corresponding to the shaded part E in FIG. 5b overlaps.

  The operation and effect of the counterflow heat exchange element configured as described above will be described below.

  As shown in FIG. 5a, in the counter flow type heat exchange element 11a, the exhaust air passage 14 and the supply air passage 15 have a waveform in parallel at the central portion where the exhaust air passage 14 and the supply air passage 15 face each other, and the waveform is formed for each layer. Are arranged in the opposite direction, and the apexes of the waveform in the opposite direction are overlapped with each other, so that the heat transfer plate 12 (not shown in the figure) can be well defined by the upper and lower spacing ribs 13 without using a special member. Due to the configuration maintained in the shape, even when the exhaust air flow 1 and the air supply air flow 2 are circulated through the exhaust air passage 14 and the air supply air passage 15, respectively, the heat transfer plate 12 is less likely to bend by the pressure of the air flow, and the pressure loss The deflection of the heat transfer plate 12 can be suppressed without increasing the value.

  Further, in the central portion where the exhaust air passage 14 and the supply air passage 15 face each other, the top of the corrugated spacing rib 13 of the exhaust air passage 14 and the top of the corrugated spacing rib 13 of the air supply air passage 15 overlap each other, Since the upper and lower spacing ribs 13 are in contact with each other, the vertical strength of the stack can be improved.

  Further, as shown in FIG. 5b, in the counter flow type heat exchange element 11b, at the central portion where the exhaust air passage 14 and the supply air passage 15 face each other, the exhaust air passage 14 and the supply air passage 15 are corrugated in parallel. In this case, the heat transfer plate 12 (not shown in the figure) can be moved up and down without using a special member. Since the structure is held in a substantially well shape by the spacing ribs 13, the heat transfer plate 12 bends with the pressure of the airflow even when the exhaust airflow 1 and the airflow 2 are circulated through the exhaust air passage 14 and the air supply air passage 15, respectively. Therefore, the deflection of the heat transfer plate 12 can be suppressed without increasing the pressure loss.

  Further, in the central portion where the exhaust air passage 14 and the supply air passage 15 are opposed to each other, the peripheral portion including the apex portion of the corrugated interval rib 13 of the exhaust air passage 14 and the apex portion of the corrugation interval rib 13 of the supply air passage 15 are included. Since the upper and lower spacing ribs 13 are in contact with each other, the strength in the vertical direction of the stack can be improved.

  Since the counterflow type heat exchange element and the heat exchange type ventilator using the same according to the present invention can suppress the deflection of the heat transfer plate without increasing the pressure loss, the air blowing means of the heat exchange type ventilator Therefore, it is useful as a counterflow type heat exchange element having an energy saving effect and a heat exchange type ventilation device using the same.

DESCRIPTION OF SYMBOLS 1 Exhaust flow 2 Supply air flow 3 Inside air port 4 Exhaust port 5 Exhaust air passage 6 Outside air port 7 Air supply port 8 Supply air air passage 9 Exhaust air blower means 10 Supply air blower means 11, 11a, 11b Counterflow type heat exchange element 12 Transmission Hot plate 13 Spacing rib 14 Exhaust air passage 15 Supply air passage

Claims (4)

A plurality of heat transfer means each having a gap holding means for holding a gap are stacked to alternately constitute an exhaust air passage and a supply air passage one layer at a time, and the exhaust flow passing through the exhaust air passage and the supply air passage are arranged. A counter current type heat exchange element that is perpendicular to or obliquely intersects at both ends of the exhaust air passage and the air supply air passage, and is opposed to a central portion between the both ends, The exhaust air flow path and the air supply air path of the countercurrent type heat exchange element are characterized by being corrugated in parallel. 2. The countercurrent heat exchange element according to claim 1, wherein in the central portion, the waveform is reversed in each layer. The counterflow type heat exchange element according to claim 2, wherein in the center portion, apexes of the reverse waveform overlap each other or a peripheral portion including the apex of the reverse waveform. The heat exchange type ventilation apparatus using the counterflow type heat exchange element as described in any one of Claim 1 to 3.

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