JP3703870B2 - Showcase drain water evaporator - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a drain water evaporator for treating drain water such as defrost water generated from a cooler such as a refrigerator-freezer showcase.
[0002]
[Prior art]
As a device for treating drain water such as defrost water from a cooler installed in a showcase body in a freezer / refrigerated showcase, it is also shown in, for example, Japanese Utility Model Laid-Open No. 5-59180 and Japanese Utility Model Laid-Open No. 2-24272. As shown, a device for forcibly evaporating drain water is installed in a machine room formed below a showcase body for storing and displaying commodities.
[0003]
As shown in FIGS. 10 and 11, this drain water evaporation device is disposed in the machine chamber 2 so as to be positioned below the drain pipe 3 connected to the drain port formed at the bottom of the showcase body 1. The evaporating cloth 18 folded in a continuous mountain shape supported by the support frame 19 is disposed as an evaporating material in the drain pan 7 for storing the water, or although not illustrated, a water pump is further installed in the drain pan 7, A drain hose connected to the pump is connected to a water spray pipe disposed on the top of the evaporating cloth 18.
[0004]
On the other hand, a compressor 3, a condenser 4, and a blower 5 are installed in the machine room 2, and drain water that has fallen from the drain pipe 3 into the drain pan 7 is sucked into the evaporating cloth 18 by a capillary phenomenon, or a pump 6. Then, the water is sucked up into the drain hose, sprayed onto the evaporating cloth 18 from the water spray pipe, and the warm air passing through the condenser 4 and the compressor 3 is applied to the evaporating cloth 18 by the blower 5, thereby draining the drain water contained in the evaporating cloth 18. Forced evaporation using heat.
[0005]
[Problems to be solved by the invention]
In a method in which an evaporating cloth is used as the evaporating material and drain water is sucked into the evaporating cloth, the cloth is clogged, the sucking amount is reduced, the evaporation capacity is lowered, and the drain water may overflow from the drain pan. In addition, it takes time and effort to fold the cloth into a continuous chevron shape.
[0006]
The object of the present invention is to eliminate the disadvantages of the conventional example, prevent a reduction in the suction force due to clogging, and can uniformly diffuse drain water to each part of the evaporating material, and has a high evaporation effect. An object of the present invention is to provide a drain water evaporator for a showcase that can extend the service life of the pump and reduce noise and power consumption.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is firstly installed in a machine room below the bottom of a showcase body of a refrigerated showcase, and a drain pan and a plurality of evaporation plates made of porous resin are provided in the drain pan. And a drain water evaporator for treating drain water such as defrost water from a cooler provided with a water pump, and a porous resin having a roof-like inclined surface independent of the evaporation plate above the evaporation plate A water spray plate made of metal, and the tip of the water spray plate is fitted into a notch formed in the evaporation plate, and a water spray hose connected to the discharge side of the water pump is connected to the water spray pipe. The gist of the invention is that the drain water can be sprayed on the inclined surface of the water spray plate.
[0008]
Secondly, the gist of the plurality of evaporation plates is that the front and rear and bottom portions are connected by comb-like spacers.
[0009]
Thirdly, the gist of the water pump is that the ON time is intermittently operated in a cycle shorter than the OFF time.
[0010]
Fourthly, the gist is to make the cross-sectional area of the water pipe smaller than the cross-sectional area of the water hose, and to make the total area of the water spray holes smaller than the cross-sectional area of the water pipe.
[0011]
Fifth, the evaporator is installed in the machine room on the leeward side of the compressor, the condenser, and the blower, and the sprinkler pipe is installed to be biased to the leeward side from the top of the water spray plate. is there.
[0012]
[Action]
According to the first aspect of the present invention, since the evaporating material is a porous resin evaporating plate, even if impurities are mixed in the drain water, the drained water is flown and is not clogged, and the amount of suction is reduced. do not do. In addition, a porous resin roof plate is also provided on the top of the evaporation plate, and a water spray pipe is provided on the roof plate, and the drain water is pumped from the drain van to the water spray tube by a water pump, so that each part of the evaporation plate is evenly distributed. Drained water will not spread and the evaporation capacity will not decrease.
[0013]
According to the second aspect of the present invention, in addition to the above-described function, the plurality of evaporation plates are connected to the front and back and the bottom with comb-like spacers, for example, the whole of the plurality of evaporation plates only by removing the bottom spacer. Can be folded flat, making it compact and easy to handle during assembly.
[0014]
According to the third aspect of the present invention, in addition to the above-described operation, the water pump is intermittently operated in a cycle in which the on time is shorter than the off time. Shortening will also prevent noise and save power.
[0015]
According to this invention of Claim 4, in addition to the said effect | action, the cross-sectional area of a water pipe is made smaller than the cross-sectional area of a water supply hose, and the total area of a water spray hole is made still smaller than the cross-sectional area of this water pipe. By doing so, the cross-sectional area becomes smaller and the pressure applied to the water in the flow passage becomes larger as it goes to the front end of the flow path, so that water can be sent to the front end of the water spray pipe, Water can be discharged evenly from the water spray holes.
[0016]
According to the fifth aspect of the present invention, the evaporator is installed in the machine room on the leeward side of the compressor, the condenser, and the blower, and the water spray pipe is installed on the windward side of the top of the water spray plate. Thus, the drain water discharged from the water spray pipe is prevented from being biased and flowing to one of the water spray plate and the evaporation plate, and flows evenly to each part of the water spray plate and the evaporation plate.
[0017]
【Example】
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a drain water evaporation apparatus for a showcase according to the present invention, and FIG. 2 is an explanatory view of the bottom of a showcase main body provided with the drain water evaporation apparatus according to the present invention. Similarly to the conventional example shown in FIG. 10, it is located under the drain pipe 6 connected to the drain port formed at the bottom of the showcase main body 1 and is disposed in the machine room 2 so as to wind up the drain water evaporator. The compressor 3, the condenser 4, and the blower 5 are sequentially disposed, and the drain water evaporator is located on the leeward side of the blower 5.
[0018]
In the drain water evaporation apparatus of the present invention, a plurality of porous resin-made evaporation plates 11 are provided in a drain pan 7 and a water feed pump 12 is provided, and the upper surface of the evaporation plate 11 is made of porous resin and has a roof shape. A watering plate 10 is provided, a watering tube 14 is connected to a watering hose 13 connected to the discharge side of the watering pump 12, and the watering tube 14 is disposed on the watering plate 10. In this case, as shown in FIGS. 7 and 8, the water sprinkling pipe 14 is disposed at a position eccentric from the top of the watering plate 10 to the windward side, that is, to the blower 5 side. In the figure, reference numeral 15 denotes a pump cover.
[0019]
As shown in FIG. 3, the evaporation plate 11 is connected to the front and back and the bottom by a comb-shaped spacer 11a. The spacer 11a is fitted into a notch formed in the evaporation plate 11, and, for example, The spacer 11a is configured to be detachable.
[0020]
As shown in FIG. 4, the water spray plate 10 is also fixed to the evaporation plate 11 by fitting the tip portion into a notch formed in the evaporation plate 11.
[0021]
In the figure, 16a and 16b are support plates for the water spray pipe 14, which are installed on both sides of a plurality of the evaporation plates arranged side by side, and support the both ends of the water spray pipe 14 on the upper portions of the support plates 16a and 16b. The sprinkling pipe 14 is provided with a sprinkling hole 14a in the lower part, and the sprinkling hole 14a is formed by a slit-shaped notch as shown in FIG.
[0022]
The water pump 12 was connected to a timer (not shown) and configured to be intermittently operated in a cycle in which the on time is shorter than the off time. The relationship between the ON time and the OFF time is, for example, that 30 seconds is set as the ON time as the time required for the entire watering plate 10 and the evaporation plate 11 to retain 90% or more, and the water retention amount of the wet evaporation plate 11 is set. The time required for about 1/10 of the sample to evaporate was set as the off time. Here, the off time is set as the time required for evaporation of about 1/10 of the water retention amount of the wet evaporation plate 11 until about 1/10, even if the water retention amount is reduced, the evaporation amount does not change. This is about 6 minutes in the experiment, but it is set to 4 minutes 30 seconds, for example, with a margin. Thereby, the operation rate of the water pump 12 can be set to about 10%.
[0023]
Then, as shown in FIG. 6, the cross-sectional area of the water spray pipe 14 is made smaller than the cross-sectional area of the water supply hose 13, and the total area of the water spray holes 14 a is made smaller than the cross-sectional area of the water spray pipe 14. The cross-sectional area was reduced and the pressure applied to the water in the flow path was increased as it reached the tip of the path.
[0024]
Further, as shown in FIG. 9, a rib 8 is raised at the bottom of the drain pan 7, thereby forming a dust reservoir 9.
[0025]
Next, the operation will be described. Drain water such as defrost water from the cooler falls from the drain pipe 6 onto the lower water spray plate 10, flows along this, and further flows down to the lower evaporation plate 11. And the exhaust heat of the condenser 4 is sent to the evaporation board 11 with the air blower 5, and drain water is forcedly evaporated with this heat.
[0026]
At this time, since the water spray plate 14 is made of a porous resin, the drain water falls while spreading over this and flows down uniformly in each part. Further, even if impurities such as dust are mixed in the drain water, the drain water flows down the surface of the water spray plate 14 and the evaporation plate 11 and therefore does not become clogged. Further, since the evaporation plate 11 is installed in the drain pan 7 in a state where it is raised by the rib 8, dust and the like mixed in the drain water collected in the drain pan 7 is collected in the dust reservoir 9, and the evaporation plate 11. Adhesion is reduced.
[0027]
The drain water that has not been evaporated by the evaporation plate 11 and has fallen into the drain pan 7 is pumped up by the water supply pump 12, sent to the water spray pipe 14 through the water supply hose 13, and flows again to the water spray plate 10 through the water spray holes 14 a. At this time, the cross-sectional area of each of the water supply hose 13 and the water spray pipe 14 and the total area of the water spray holes 14a are sequentially reduced, and the flow path is formed in a tapered state, so that it is added to the water in the flow path. The pressure can be increased, water can be reliably sent to the water spray hole 14 a at the tip of the water spray pipe 14, and water is evenly discharged from all the water spray holes 14 a of the water spray pipe 14.
[0028]
In this case, since the water spray holes 14a are formed in a slit shape, the water spray flows evenly on both sides of the water spray plate 10 as shown in FIG. Processing is also easy.
[0029]
Moreover, since the water spray pipe 14 is installed in the windward side with respect to the air blower 5, even if the water which falls from the water spray hole 14a by the wind force from the air blower 5 is flowed, as shown in FIG. 7, FIG. In addition, water does not flow to one side of the evaporation plate 11 and water flows uniformly in each part.
[0030]
The water pump 12 was operated intermittently at an operation rate of about 10% to save energy and reduce noise.
[0031]
【The invention's effect】
As described above, the drain water evaporation apparatus of the present invention firstly uses an evaporation plate made of a porous resin as the evaporation material, so that even if impurities are mixed in the drain water, the drain water will flow and become clogged. There is no, and the amount of siphoning does not decrease. In addition, a porous resin roof plate is also provided on the top of the evaporation plate, and a water spray pipe is provided on the roof plate, and the drain water is pumped from the drain van to the water spray tube by a water pump, so that each part of the evaporation plate is evenly distributed. Drained water will not spread and the evaporation capacity will not decrease.
[0032]
Secondly, by connecting the front and back and bottom of the plurality of evaporation plates with comb-like spacers, for example, the whole of the plurality of evaporation plates can be folded flat simply by removing the bottom spacer, making it compact and assembled. The handling of time becomes easy.
[0033]
Thirdly, since the water pump is intermittently operated in a cycle in which the ON time is shorter than the OFF time, the service life of the pump becomes longer, the driving time becomes shorter, and noise prevention and power saving are also achieved.
[0034]
Fourthly, by reducing the cross-sectional area of the water supply pipe from the cross-sectional area of the water supply hose, and forming the total area of the water spray holes smaller than the cross-sectional area of the water supply pipe, according to the end of the flow path, Since the cross-sectional area is reduced and the pressure applied to the water in the flow path is increased, water can be sent to the tip of the water spray pipe, and water can be discharged evenly from all the water spray holes of the water spray pipe.
[0035]
Fifth, the evaporator is installed in the machine room on the leeward side of the compressor, condenser, and blower, and the sprinkler pipe is installed on the leeward side of the top of the sprinkler plate to discharge from the sprinkler pipe. The drained water is prevented from flowing to one side of the watering plate or the evaporation plate by receiving wind force, and flows evenly to each part of the watering plate or the evaporation plate.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a drain water evaporator according to the present invention.
FIG. 2 is a vertical side view of a machine room portion where a drain water evaporation device of a showcase of the present invention is installed.
FIG. 3 is a side view of an evaporation plate of the drain water evaporator according to the present invention.
FIG. 4 is a vertical side view of a fitting portion between an evaporation plate and a water spray plate of the drain water evaporation apparatus of the present invention.
FIG. 5 is a vertical side view of the installation portion of the water spray pipe of the drain water evaporator according to the present invention.
FIG. 6 is a perspective view of portions of a water supply pump, a water supply hose, and a water spray pipe of the drain water evaporator according to the present invention.
FIG. 7 is a longitudinal side view of the drain water evaporator according to the present invention when the water spray pipe is installed on the top of the water spray plate.
FIG. 8 is a longitudinal side view when the water spray pipe of the drain water evaporator according to the present invention is installed at an eccentric position from the top of the water spray plate.
FIG. 9 is a longitudinal side view of a drain pan of the drain water evaporator according to the present invention.
FIG. 10 is a vertical side view of a machine room portion where a conventional drain water evaporator is installed.
FIG. 11 is a perspective view of a conventional drain water evaporator.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Showcase body 2 Machine room 3 Compressor 4 Condenser 5 Blower 6 Drain pipe 7 Drain pan 8 Rib 9 Garbage reservoir 10 Sprinkling plate 11 Evaporating plate 11a Spacer 12 Water feed pump 13 Water feed hose 14 Water sprinkling tube 14a Water spray hole 15 Pump cover 16a, 16b Support plate 18 Evaporating cloth 19 Support frame

Claims (5)

Defrosted water from a cooler that is installed in a machine room below the bottom of the showcase body of the refrigerated refrigerated showcase, and has a drain pan and a plurality of porous resin-made evaporation plates in the drain pan, and a water pump is installed. In the drain water evaporator for treating drain water such as, a water spray plate made of a porous resin having a roof-like inclined surface independent of the evaporator plate is provided on the upper side of the evaporator plate, and the tip of the water spray plate is attached to the drain plate. The water spray hose connected to the discharge side of the water pump is connected to a notch formed in the evaporation plate, and a water spray hose is connected to the water spray hose so that drain water can be sprinkled on the inclined surface of the water spray plate. A drain water evaporation device for a showcase, characterized in that it is disposed in   2. The drain water evaporation apparatus for a showcase according to claim 1, wherein the plurality of evaporation plates are connected to the front and rear and the bottom by comb-like spacers.   The drain water evaporator according to claim 1, wherein the water pump is intermittently operated in a cycle in which the on time is shorter than the off time.   The drain water evaporation of a showcase according to claim 1, wherein the cross-sectional area of the water pipe is made smaller than the cross-sectional area of the water hose, and the total area of the water spray holes is made smaller than the cross-sectional area of the water pipe. apparatus. 2. The show according to claim 1, wherein the evaporator is installed in the machine room on the leeward side of the compressor, the condenser, and the blower, and the water spray pipe is installed so as to be biased toward the windward side from the top of the water spray plate. Case drain water evaporator.

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