JPH0684220U - Dehumidifier heat exchanger - Google Patents

Abstract

(57) [Summary] [Purpose] The filter can be easily replaced, and the device does not become large. [Structure] A partition plate 22 for partitioning the cooling chamber 2 is disposed on the outlet side of the cooling chamber 2. An outlet 24 and an inlet 25 communicating with the cooling chamber 2 are formed on the lower surface of the body 1 with the partition plate 22 interposed therebetween. A drain ejector 27 is detachably attached to the lower surface of the body 1 at positions corresponding to the outlet 24 and the inlet 25. The paths leading to the outlet 24, the drain ejector 27, and the inlet 25 are referred to as a bypass 40. Filter 42 to outlet 24
The drain discharger 27 is detachably attached to the lower surface of the body 1 so that the drain discharger 27 and the drain discharger 27 are partitioned.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heat exchanger used in a dehumidifier.

[0002]

[Prior art]

 Conventionally, as a heat exchanger for this type of dehumidifier, for example, there is one as disclosed in Japanese Utility Model Publication No. 2-49498. In this dehumidifier heat exchanger, a cooling chamber is formed by housing an evaporator in an inner cylinder, and a preliminary cooling chamber is formed between a cylindrical outer cylinder that houses the inner cylinder and the inner cylinder. The pre-cooling chamber and the cooling chamber are communicated with each other via a direction changing passage. A collecting chamber is formed at one end of the outer cylinder, and the collecting chamber is communicated with the cooling chamber through a plurality of heat transfer pipes arranged in the precooling chamber. A filter is installed in the collection chamber.

Then, the hot and humid air first enters the pre-cooling chamber and also enters the cooling chamber through the direction changing flow path. The air that has passed through the cooling chamber enters the collection chamber through the heat transfer pipes and exits outside through the filter. The air is dehumidified by being cooled in a cooling chamber provided with an evaporator, and the dehumidified cooling air flows through the heat transfer pipe. Therefore, the hot and humid air flowing through the preliminary cooling chamber is pre-cooled by the cooling air inside the heat transfer pipe, and the temperature of the cooling air flowing through the heat transfer pipe rises. In addition, the dry air that has entered the collection chamber through the heat transfer pipes is cleaned by a filter installed in the collection chamber to remove dust and oil contained in the air, and exits as clean dry air. Go.

[0004]

[Problems to be solved by the device]

 By the way, it is desirable that the filter in the collection chamber can be appropriately replaced depending on the life of the filter and the use of the heat exchanger. However, in the heat exchanger described above, the filter is mounted using a nut or the like in the collection chamber formed at one end of the outer cylinder. Moreover, the opening at one end of the outer cylinder is hermetically sealed by attaching the lid by welding or attaching with a bolt. Therefore, when replacing the filter, it is necessary to loosen the bolts and remove the lid from the outer cylinder to open the one end opening of the outer cylinder. Further, when the lid is welded and fixed to the outer cylinder, the replacement of the filter becomes very difficult.

That is, in this conventional heat exchanger, the filter as a whole can be made compact by incorporating the filter into the inside of the outer cylinder forming the exterior of the device. There was a problem that exchange was very troublesome.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a heat exchanger for a dehumidifier in which the filter can be easily replaced and the size of the device is not increased. To provide an exchange.

[0007]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, in the first invention, between the cooling area in which the evaporator is arranged, the supply air guided to the cooling area and the air passing through the cooling area are provided. A reheat area for heat exchange is provided, and a detour path facing the outer surface side of the body is provided at a part of the outlet side of the cooling area, and at the position corresponding to the detour path, the outer surface of the body is A filter for removing dust and oil in the air is removably attached.

Further, in the second invention, a partition plate for partitioning the cooling area is provided on the outlet side of the cooling area, and an outlet and a guide for communicating with the cooling area are provided on the lower surface of the body with the partition plate interposed therebetween. An inlet is formed, and a drain ejector is detachably attached to the lower surface of the body at a position corresponding to the outlet and the inlet, and the route leading to the outlet, the drain ejector, and the inlet is the detour. The filter is detachably attached to the lower surface of the body in the drain ejector so as to divide the outlet from the drain ejector.

[0009]

Therefore, according to the first aspect of the invention, a detour that faces the outer surface side of the body is provided at a part of the outlet side of the cooling region, and a filter is provided on the outer surface of the body at a position corresponding to the detour path. Is detachably attached. In other words, the filter is not integrated into the body, but is provided in the detour that faces the outer surface of the body. Therefore, the filter can be easily attached and detached from the outer surface side of the body without removing a part of the components that form the body. Further, the filter is attached to the outer surface of the body, and the filter is provided so as to be substantially integrated with the body. Therefore, there is no fear that the device will become large or the configuration will become complicated.

According to the second invention, when the drain ejector is removed from the lower surface of the body, the filter is exposed on the lower surface of the body. Therefore, with the filter thus exposed, the filter can be easily attached and detached from the lower surface of the body. Further, the drain ejector is attached to the lower surface of the body, and the drain ejector is provided so as to be substantially integrated with the body. Therefore, there is no fear that the device will become large or the configuration will become complicated.

Further, the air is dehumidified by being cooled in the cooling area to become dry air, and the moisture separated from the dry air collides with the partition plate together with the air flow and passes through the outlet port to It is introduced into the drain ejector located below the outlet. Then, the water content passes through the filter in the drain ejector and drops downward, and the dry air in the drain ejector passes through the inlet located above the ejector and again on the outlet side of the cooling area. Be led to. In other words, the air in the cooling area is guided through the outlet to the drain discharger located below, and the air in the discharger is guided to the cooling area again through the inlet located at the upper side, so that the moisture content is reduced. And dry air can be reliably separated. Further, in the process in which the air in the cooling area is guided into the drain discharger through the outlet, the dust and oil in the air are reliably removed by the filter.

[0012]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 3 to 6, the body 1 is made of an anticorrosive material such as aluminum and is formed into a substantially rectangular tube shape, and two cylindrical holes are formed in the body in parallel with each other. . One hole serves as a cooling chamber 2 serving as a cooling area, and the other hole serves as a reheating chamber 3 serving as a reheating area. Lids 4 and 5 also made of aluminum material are detachably attached to the openings of both ends of the body 1 by a plurality of hexagon socket screws 6, and the openings of both ends are sealed by the lids 4 and 5. The state is blocked. In this embodiment, the body is composed of the body 1 and the lids 4 and 5.

In the cooling chamber 2, a single refrigeration pipe 7 made of copper or aluminum material is inserted and arranged so as to penetrate one lid 4, and the tip of the refrigeration pipe 7 is blocked. , Is inserted to a position where it abuts on the inner surface of the other lid 5. A seal ring 8 is interposed between the lid body 4 and the freezing pipe 7 to maintain airtightness between the cooling chamber 2 and the outside. A large number of elongated heat exchanging fins 9 made of an aluminum material are radially and densely supported on the outer peripheral surface of the freezing pipe 7. Further, a capillary tube 10 for supplying a refrigerant is inserted and arranged in the freezing pipe 7, and the tip thereof is located near the tip of the freezing pipe 7. Then, the refrigerant is supplied into the freezing pipe 7 from the opening of the tip of the capillary tube 10. The freezing pipe 7, the heat exchange fins 9 and the capillary tube 10 constitute an evaporator 11.

One heat transfer pipe 12 is inserted and arranged in the reheat chamber 3, and the inside of the heat transfer pipe 12 serves as a precooling chamber 13 as a precooling region. The peripheral surface of the intermediate portion of the heat transfer pipe 12 is formed in a spirally corrugated form, and the spiral protrusion 12a on the outer periphery of the heat transfer pipe 12 is in contact with the inner wall of the reheat chamber 3. That is, a spiral space is formed between the spiral recess 12 b on the outer circumference of the heat transfer pipe 12 and the inner wall of the reheat chamber 3, and this spiral space becomes the reheat chamber 3.

The inlet side (left side in FIG. 3) of the heat transfer pipe 12 is inserted and supported by the lid 4 via a seal ring 14. An air inlet 15 communicating with the inlet of the heat transfer pipe 12, that is, the inlet of the precooling chamber 13 is formed on one side surface and the upper and lower surfaces of the lid body 4. The air inlet 15 side and the reheating chamber 3 side are formed. The airtightness between them is maintained by the seal ring 14. The air inlets 15B on the upper and lower surfaces of the lid 4 are normally closed by plugs, and only the air inlets 15A on the side surfaces are open. Further, the outlet of the cooling chamber 2 (left side in FIG. 3) and the inlet of the reheat chamber 3 (left side in FIG. 3) communicate with each other through a gap between the lid body 4 and the body body 1.

As shown in FIGS. 3 and 6, an annular spacer 17 is fitted to the inner peripheral surface on the outlet side (right side in FIG. 3) of the reheat chamber 3 via a seal ring 16 to transfer the heat. The outlet side (right side in FIG. 3) of the heat pipe 12 is inserted and supported by the spacer 17 via a seal ring 18. Two protrusions 19 are formed on the inner surface of the lid body 5 so as to face the spacers 17 and the heat transfer pipes 12, and a part of the end faces of the spacers 17 and the heat transfer pipes 12 are abutted and supported by both protrusions 19. ing. Further, the outlet of the heat transfer pipe 12, that is, the outlet of the precooling chamber 13 and the inlet of the cooling chamber 2 (on the right side in FIG. 3) are communicated with each other through a gap between the lid body 5 and the body body 1. Further, an air outlet 20 communicating with the outlet side of the reheat chamber 3 is formed on the side surface of the body body 1, and the airtightness between the air outlet 20 side and the outlet side of the precooling chamber 13 is the seal ring. It is held by 16 and 18.

As shown in FIGS. 1 and 3, an annular partition plate 22 is fitted to the inner peripheral surface on the outlet side of the cooling chamber 2 via a seal ring 21, and the refrigeration pipe 7 is sealed by the seal ring. The partition plate 22 is inserted through 23. The heat exchange fins 9 are provided in the range from the inlet of the cooling chamber 2 to the partition plate 22. In addition, the partition plate 22 is sandwiched between the main body 1 and the lower surface thereof, a guide port 24 communicating with the inlet side of the cooling chamber 2 and an inlet port 25 communicating with the outlet side are formed. A drain ejector 27 is detachably supported on the lower surface of the body 1 via a mounting adapter 26 at positions corresponding to the guide outlet 24 and the inlet 25.

Here, the configuration of the drain ejector 27 will be described in detail. As shown in FIGS. 1 and 2, the mounting adapter 26 is fixed to the lower surface of the body 1 by screws 28. The mounting adapter 26 includes an inner cylindrical body 29 arranged so as to correspond to the outlet 24, and an outer cylindrical body 30 arranged so as to correspond to the inlet 25 around the inner cylindrical body 29. have. Seal rings 31 and 32 are respectively interposed between the cylindrical bodies 29 and 30 and the body body 1.

A pair of locking grooves 33 are formed in the lower inner peripheral surface of the outer cylindrical body 30 along the circumferential direction, and one end of the locking groove 33 is opened to the lower end edge of the outer cylindrical body 30. There is. On the other hand, the drain ejector 27 has a drain container 34, and a pair of locking projections 35 are formed on the upper opening of the drain container 34 so as to project outward. Then, with the drain container 34 positioned below the mounting adapter 26, its locking projection 35 is positioned within the locking groove 33 of the outer cylindrical body 30. In this state, the drain container 34 is detachably attached to the attachment adapter 26 by rotating the drain container 34 in the clockwise direction in FIG. 2 by approximately 90 degrees. A seal ring 36 is attached to the outer peripheral edge of the upper end of the drain container 34, and the seal ring 36 maintains airtightness between the drain container 34 and the mounting adapter 26. The outer surface of the drain container 34 is covered with a guard cover 37, and the guard cover 37 is attached to the attachment adapter 26 together with the drain container 34.

An engaging recess 26 a is formed on the outer surface of the lower end of the mounting adapter 26. On the other hand, a lock lever 38 is rotatably supported on the upper outer surface of the guard cover 37. When the drain container 34 and the guard cover 37 are attached, the lock lever 38 is engaged with the engagement recess 26a, and the attached state of the drain container 34 and the like with respect to the attachment adapter 26 is reliably maintained. The lock lever 38 is urged by the urging force of the spring 39 in a direction to engage with the engagement recess 26a.

In the state where the drain container 34 is attached to the attachment adapter 26 as described above, the outlet 24 is communicated with the region 34a in the drain container 34 through the inner cylindrical body 29, and The region 34a communicates with the inlet 25 via the inner cylinder 29 and the outer cylinder 30. That is, in this embodiment, the route leading to the outlet 24, the region 34a in the drain container 34, and the inlet 25 serves as a detour 40. The detour 40 is formed so as to face the outer surface side of the body 1.

A female screw portion 41 is formed on the inner peripheral surface of the inner cylindrical body 29. On the other hand, the filter 42 has a substantially bottomed cylindrical shape, and a male screw portion 43 is formed on the upper portion thereof. Then, the male screw portion 43 is screwed onto the female screw portion 41 from below, whereby the filter 42 is detachably attached to the attachment adapter 26 in the drain container 34. That is, the filter 42 is attached to the outer surface of the body 1 at a position corresponding to the bypass 40. When the filter 42 is attached as described above, the region 34a in the drain container 34 is partitioned from the outlet 24 by the filter 42.

A well-known float valve mechanism 44 is attached to the bottom of the drain container 34. The structure of the float valve mechanism 44 will be briefly described. The drain pipe 45 that constitutes the float valve mechanism 44 is mounted through the bottom of the drain container 34, and the pilot pipe is attached to the outer periphery of the inner end of the drain pipe 45. The body 46 is fixed. An elevating body 47 is slidably housed in the inner periphery of the inner end of the drainage pipe 45 and the inner periphery of the large diameter portion 46a of the pilot cylinder 46, and the interior of the drainage pipe 45 is always blocked by the elevating body 47. Has been done. A compression spring 48 is interposed between the lifting body 47 and the pilot cylinder 46. The inside of the large diameter portion 46a of the pilot cylinder 46 and the inside of the drainage pipe 45 communicate with each other through an orifice 47a on the elevating body 47.

A cylindrical valve 49 is slidably accommodated in the upper end of the small diameter portion 46b of the pilot cylinder 46, and the orifice 50 in the small diameter portion 46b is opened and closed by the cylindrical valve 49. A float 51 is arranged on the outer periphery of the pilot cylinder 46, and a lever 52 attached to the float 51 penetrates the small diameter portion 46b and is inserted into the cylindrical valve 49.

Next, the operation of the heat exchanger for dehumidifier configured as described above will be described. Now, the hot and humid air enters the heat transfer pipe 12, that is, the precooling chamber 13 from the air inlet 15A and flows in the precooling chamber 13. The hot and humid air that has passed through the precooling chamber 13 enters the cooling chamber 2 through the gap between the body 1 and the lid 5, and flows between the heat exchange fins 9 in a dense state. The air in the cooling chamber 2 is deprived of heat by the cooling action of the evaporator 11 and becomes low in temperature. That is, the air flowing through the cooling chamber 2 is cooled by the heat exchange action between the cooling chamber 2 and the heat exchanging fins 9 to generate moisture, and the air passing through the cooling chamber 2 is composed of low temperature air and moisture. It becomes a mixed state.

The generated water collides with the partition plate 22 together with the air flow, and is introduced through the outlet 24 into the drain container 34 located below the outlet 24. Then, the water component passes through the filter 42 in the drain container 34 and drops downward. The bottom 42a of the filter 42 covers the entire upper surface of the float valve mechanism 44. Therefore, the water that has passed through the filter 42 falls around the float valve mechanism 44. On the other hand, the low temperature air introduced into the drain container 34 passes through the filter 42 and is guided again to the outlet side of the cooling chamber 2 through the inlet 25 located above the drain container 34.

That is, in this embodiment, the air in the cooling chamber 2 is guided through the outlet 24 into the drain container 34 located below, and the air in the container 34 is introduced into the inlet 25 located above. The air flow direction is greatly bent up and down so that it is guided again to the cooling chamber 2 through. As a result, the water removed from the air does not flow over the drain container 34 to flow into the introduction port 25 due to the air flow, and reliably falls around the float valve mechanism 44. Therefore, it is possible to reliably separate the water and the low temperature air.

Further, in the process in which the air in the cooling chamber 2 is introduced into the drain container 34 through the outlet 24, dust, oil, etc. in the air are reliably removed by the filter 42, and the air is clean low-temperature air. Goes out to the inlet 25 side. At this time, in the present embodiment, the cylindrical filter 42 is vertically arranged, and the air introduced from the upper opening of the filter 42 passes from the inner wall side of the filter 42 to the outer wall side. Therefore, unlike the case where the filter 42 is placed horizontally, the air is evenly passed over the entire circumference of the filter 42. Therefore, it is possible to maximize the ability of the filter 42 to remove dust and the like, and improve the efficiency of removal of dust and the like by the filter 42. Further, the degree of contamination of the filter 42 can be made substantially uniform over the entire peripheral surface, and the life of the filter 42 can be extended.

Moisture that has dropped around the float valve mechanism 44 accumulates in the drain container 34, and the float 51 rises due to the accumulated water. At this time, when the rising position of the float 51 is below the specified value, the orifice 50 is closed by the tubular valve 49, and when the rising position of the float 51 is above the specified value, the orifice 50 opens and the high-pressure air has a small diameter portion. Flows into 46b. The cross-sectional area of passage of the orifice 50 is smaller than the cross-sectional area of passage of the orifice 50, and by this setting, the small diameter portion 46b has a high pressure. The elevating body 47 is pushed down by the high pressure and the spring action of the compression spring 48, and the blockage in the drain pipe body 45 is released. Therefore, the water in the drain container 34 is discharged into the drain pipe 45 from the through-hole 46c that is transparently provided on the large diameter portion 46a of the pilot cylinder 46. When the water in the drain container 34 is discharged, the ascending / descending body 47 immediately closes the drainage pipe body 45, and a large air leak does not occur.

On the other hand, the low-temperature air that has passed through the cooling chamber 2 enters the reheat chamber 3 through the gap between the body 1 and the lid 4, and the spiral space around the heat transfer pipe 12, that is, the reheat chamber It flows while being swirled in the heat chamber 3 to be heated, and becomes dry air, and exits from the air outlet 20. Therefore, the hot and humid air in the heat transfer pipe 12, that is, the pre-cooling chamber 13 is pre-cooled by the surrounding low-temperature air, and the pre-cooled air enters the cooling chamber 2. That is, the load on the evaporator 11 can be reduced by previously cooling the air introduced into the cooling chamber 2. On the contrary, since the temperature of the low-temperature air that has passed through the reheat chamber 3 rises, the air can be brought into a dry state with low humidity.

Further, in this embodiment, since the heat transfer pipe 12 is formed in a concavo-convex shape in a spiral shape, its surface area is large, and the passage distance of the low temperature dry air flowing while swirling in the reheat chamber 3 is also increased. Is longer than that of direct current. Further, the hot and humid air flow in the heat transfer pipe 12 is disturbed by the unevenness of the inner wall of the heat transfer pipe 12. Therefore, as compared with the case where the low-temperature air flow and the high-temperature humid air flow are direct current, the heat exchange rate in the pre-cooling chamber 2 can be improved, and the pre-cooling effect can be further enhanced.

When replacing the filter 42, first, the lock lever 38 is rotated against the urging force of the spring 39, so that the lever 38 engages with the engaging recess 26 a on the mounting adapter 26 side. To release. In this state, by rotating the drain container 34 together with the guard cover 37 in the counterclockwise direction in FIG. 2 by about 90 degrees and moving the drain container 34 downward, the drain container 34 is easily removed from the mounting adapter 26, and the body main body is removed. The filter 42 is exposed on the lower surface of 1. In this state, the filter 42 can be easily removed from the mounting adapter 26 by rotating the filter 42 and releasing the screwing of the upper male screw portion 43 and the female screw portion 43 on the mounting adapter 26 side.

When the filter 42 and the drain container 34 are attached to the attachment adapter 26, the procedure opposite to the above removing operation may be performed. Also, this mounting work can be easily performed only by rotating the filter 42 and the drain container 34, similarly to the above-mentioned removal work.

That is, in the present embodiment, the filter 42 is not integrally incorporated in the body of the device, but is provided in the bypass 40 that faces the outer surface side of the body. Therefore, depending on the life of the filter 42, the use of the heat exchanger, etc., the replacement of the filter 42 can be easily performed from the outer surface side of the body without removing some of the components constituting the body. It can be carried out. For example, if you want to remove dust in the air, use a dust removal filter with a relatively coarse mesh, and if you want to remove oil in the air, use a filter for oil separation with a relatively fine mesh. The use of filters can be easily performed without the need for complicated work. Further, in the present embodiment, the drain ejector 27 equipped with the filter 42 is directly attached to the outer surface of the body body 1 without using a drain ejecting pipe or the like, and the drain ejector 27 is substantially attached to the body body 1. It is provided in an integrated state with. Therefore, the device as a whole can be made compact, the structure is not complicated, and there is no fear that water will be clogged in the drain discharge pipe.

The present invention is not limited to the above-described embodiment, and the configuration of each part is arbitrarily changed without departing from the spirit of the present invention, for example, by appropriately changing the configuration of the main body of the heat exchanger. It is also possible to embody it.

[0036]

[Effect of device]

 As described above in detail, according to the present invention, it is possible to easily replace the filter, and further, there is an excellent effect that there is no fear that the device becomes large.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an essential part showing a heat exchanger for a dehumidifier embodying the present invention, and particularly showing a drain discharger.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a plan cross-sectional view showing the entire heat exchanger for dehumidifier.

FIG. 4 is a partially cutaway perspective view of the heat exchanger for dehumidifier.

5 is a cross-sectional view taken substantially along the line BB in FIG.

6 is a sectional view taken along the line CC of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Body main body which comprises a body, 2 ... Cooling chamber as a cooling area, 3 ... Reheating chamber as a reheating area, 4 ... Lid body which constitutes a body, 5 ... Lid body which constitutes a body, 11 ... Evaporation Container, 13 ... Precooling chamber, 22 ... Partition plate, 24 ... Outlet port, 25
... Inlet, 26 ... Mounting adapter, 27 ... Drain ejector, 40 ... Detour, 42 ... Filter.

Claims (2)

[Scope of utility model registration request] 1. A body is provided with a cooling region in which an evaporator is arranged and a reheating region for performing heat exchange between supply air guided to the cooling region and air passing through the cooling region. A detour that faces the outer surface of the body is provided at a part of the outlet side of the cooling area, and at the position corresponding to the detour, the outer surface of the body is provided for removing dust, oil, etc. in the air. A heat exchanger for a dehumidifier, wherein a filter is detachably attached. 2. A partition plate for partitioning the cooling area is provided on the outlet side of the cooling area, and an outlet and an inlet communicating with the cooling area are formed on the lower surface of the body with the partition plate interposed therebetween. A drain ejector is detachably attached to the lower surface of the body at a position corresponding to these outlets and inlets,
The route leading to the outlet, the drain ejector, and the inlet is defined as the detour, and the filter is detachably attached to the lower surface of the body in the drain ejector so as to partition the outlet from the drain ejector. Claim 1
A heat exchanger for a dehumidifier according to.