JP2005188852A - Full water detecting mechanism of air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure which facilitates draining operation for drain water which generates in an air conditioner and prevents the falling of the drain water when a drain tank is not mounted. <P>SOLUTION: A refrigerating cycle is constituted from a compressor 2, a condenser 3, a pressure reducing device 4 and evaporator 5 provided in a frame 1, and drain water which generates in the evaporator 5 is drained from a drain water dropping path 6a and accommodated in a drain tank 7. A float 8 which detects the water level in the drain tank 7 and a drain tank lever 10 are provided in the frame 1 or its constituent members outside the drain tank 7. The float 8 cooperates with a float switch 9 which controls the operation of an air conditioner. The float 8 operates when the drain tank 7 is filled with drain water, or a drain tank lever 10 moves the float 8 upward when the drain tank 7 is not mounted, and the float switch 9 operates to stop the operation of the air conditioner. A drain water stop cock 10a provided on the drain tank lever 10 closes the drain water dropping path 6a. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a structure of an air conditioner that performs air conditioning using a refrigeration cycle.

  An air conditioner called a chiller or a dehumidifier is a compressor that compresses refrigerant into the frame, a condenser that sends compressed high-temperature gaseous refrigerant, and refrigerant that is liquefied by the condenser is sent via a decompressor. The refrigerant evaporated by the evaporator is returned to the compressor to constitute a refrigeration cycle.

  The condenser and the evaporator are provided with a blower fan, and are blown. When the refrigerant is pressurized by the compressor, the refrigerant and the evaporator become high-temperature and high-pressure, and the refrigerant is liquefied by exchanging heat with the air flow passing through the condenser. The liquefied high-pressure refrigerant is reduced in pressure by the decompressor and sent to the evaporator. The air passing through the evaporator is cooled to evaporate the refrigerant inside the evaporator, and the vaporized refrigerant is pressurized again by the compressor. And sent to the capacitor.

  In such an air conditioner, moisture contained in the air cooled by passing through the evaporator is condensed on the surface of the evaporator to become drain water, and falls into a drain pan provided below the evaporator, and finally, in the frame body. When the drain tank is full, it can be used continuously by the user draining the drain tank.

And in the air conditioner which has a drain tank, it is necessary to stop safely before the drain water which generate | occur | produced overflows from a product, and the full water detection mechanism is mounted for that purpose. (See Patent Document 1).
JP-A-11-108391

  In the air conditioner as described above, the full water detection mechanism is roughly classified into a float type and a heavy type, and the float type has a float in the drain tank, and the float is discharged when the drain tank is full. It rises and switches the switch located near the float to detect full water.

  The advantage of this type is that by installing a switch located near the float outside the drain tank, it is possible to detect not only when the tank is full, but also whether there is a drain tank, and the user installs the drain tank. If you forget to do so, you will not be able to operate, so drain water will not flow out.

  However, since this type of drain tank has a float in the drain tank, when the drain water in the drain tank is drained, the float may move or drop, which may interfere with the drainage work. It is inconvenient. In addition, since it is a part that adheres to water and dries, it tends to cause mold generation and dirt, and makes it uncomfortable and easily noticeable to the user when draining. Furthermore, when the drain tank is cleaned, the float is very obstructive, so that the structure cannot be completely cleaned, or the float needs to be removed every time it is cleaned.

  On the other hand, the heavy type does not have a float in the drain tank, the drain tank is mounted on a stand installed in the frame, the stand floats against gravity by a spring, and increases as the drain tank becomes full Then, it sinks by the amount of weight, and finally the switch attached to the frame is operated to detect full water.

  The advantage of this type is that since the drain tank has no float, the shape of the drain tank can be made very simple, and the drainage work and the drain tank can be easily cleaned.

  However, since this type of operating principle resists the spring and activates the switch due to the increase in weight, it is very difficult to detect when the user forgets to install the drain tank, and the drain tank is not installed. There is a risk of causing a serious trouble of continuing the operation and causing the drain water to flow outside.

  For this reason, conventionally, a switch for detecting the presence or absence of a drain tank is required in addition to a switch for detecting whether the drain water is full. If a plurality of switches are provided, the cost becomes very high and the control mechanism becomes complicated. It was a thing.

  Also, when both the float type and heavy type drain tanks are removed, the drain water dripping path of the drain pan at the bottom of the evaporator is opened and the drain water that has fallen into the drain tank falls to the bottom of the product and is confirmed to the user. It can reduce product value. Therefore, in the conventional example, it is necessary to add a dedicated structure only to block the drain water dropping path.

  The present invention is for solving the above-mentioned problems. In the frame 1 of the air conditioner, there are a compressor 2 for compressing a refrigerant, a capacitor 3 to which a high-temperature gaseous refrigerant is sent, and a liquefied refrigerant. An evaporator 5 sent through the decompressor 4, and has a refrigeration cycle in which the refrigerant evaporated by the evaporator 5 is returned to the compressor 2. A drain pan 6 is formed below the evaporator 5, and a lower portion of the drain pan 6 Is provided with a drain water dripping path 6a. The lower drain water dripping path 6a is an integrated air conditioner having a drain path communicating with a drain tank 7 for finally storing drain water. A float 8 that fluctuates depending on the water level is provided in the frame 1 outside the drain tank 7 or in its constituent members, and a float switch 9 that operates according to the position of the float 8 To comprise, it makes it possible to change the detected operating state by the position of the float 8 the water level in the drain tank 7, characterized in that it has a full water detection mechanism with no float mechanism in the drain tank 7.

  Further, a drain tank lever 10 is provided in the frame body 1 outside the drain tank 7 or a component thereof, and a drain stop cock 10a is provided in a part of the drain tank lever 10, and when the drain tank 7 is not attached. The drain tank lever 10 moves up the float 8 and operates the float switch 9 to stop the operation, and the drain stop cock 10a closes the drainage path communicating with the drain tank 7 of the drain water dripping path 6a. A drain water dripping prevention function when the tank 7 is not attached and a detection function of the drain tank 7 are added to the full water detection mechanism.

  The present invention that solves the above-described problems includes a float 8 that varies depending on the water level in the drain tank 7 in the frame 1 outside the drain tank 7 or a component thereof, and further includes a float switch 9 that operates according to the position of the float 8. It is provided in the frame body 1 or its constituent members, and can change the operation state by detecting the water level in the drain tank 7 based on the position of the float 8, and does not have a float mechanism in the drain tank 7. By having the full water detection mechanism, the shape of the drain tank 7 can be made very simple, and the drain tank 7 that can be easily drained and cleaned can be provided.

  Also, a drain tank lever 10 is provided in the frame 1 outside the drain tank 7 or in its constituent members, and a drain stop cock 10a is provided on a part of the drain tank lever 10, and the drain tank 7 is not mounted. The drain tank lever 10 moves up the float 8 and operates the float switch 9 to stop the operation. At the same time, the drain stop cock 10a closes the drainage path communicating with the drain tank 7 of the drain water dripping path 6a. When the drain tank 7 is taken out from the frame 1, the drain water does not fall from the drain water dripping path 6 a and the bottom surface of the frame 1 is not wetted with the drain water.

  Further, in the present invention, the drain water dripping prevention structure when the drain tank 7 is taken out and the detection mechanism of the drain tank 7 can be used together with the full water detection mechanism, so that it can be realized at a very low cost.

  The present invention will be described with reference to the embodiments shown in the drawings. Reference numeral 1 denotes a frame constituting an air conditioner, 2 denotes a compressor for compressing refrigerant stored in the frame 1, and 3 denotes refrigerant compressed by the compressor 2. Is a high-temperature high-pressure gas sent to the condenser, 4 is a decompressor in which the refrigerant radiated and liquefied is decompressed, 5 is an evaporator to which the decompressed refrigerant is sent, and the refrigerant is the evaporator 5 To be vaporized and the surroundings are cooled by the heat of vaporization of the refrigerant. Thereafter, the refrigerant gas evaporated by the evaporator 5 is returned to the compressor 2, and the refrigerant pressurized by the compressor 2 is sent to the condenser 3 and circulated.

  The air conditioner of the embodiment is a type of air conditioner called a cold air conditioner, 3b is a hot air outlet that is arranged on the back side of the frame 1, 3a is a hot air blower fan that blows air to the condenser 3 The air blown by the hot air blowing fan 3a passes through the condenser 3, and at this time, the high-temperature and high-pressure gaseous refrigerant sent from the compressor 2 is cooled and liquefied. And the air which became high temperature through the capacitor | condenser 3 is discharged | emitted from the warm air blower outlet 3b.

  Reference numeral 5 b denotes a cold air outlet arranged in front of the frame 1, and 5 a denotes a cold air blower fan that blows out the air that has passed through the evaporator 5 from the cold air outlet 5 b. The air that is sent and vaporized and sent to the evaporator 5 by the cold air blowing fan 5a is cooled by the heat of vaporization, becomes cold air, and blows out from the cold air blowing port 5b.

  6 is a drain pan provided below the evaporator 5, 6 a is a drain water dripping path provided at the lower portion of the drain pan 6, 7 is a drain tank provided at the lower portion in the frame 1, and 1 a is located on the side of the drain tank 7. A tank outlet 1b is a partition wall provided in the frame 1 for constituting the storage space of the drain tank 7, and moisture contained in the air cooled by the evaporator 5 is condensed on the surface of the evaporator 5 and drained. It becomes water and drops on the drain pan 6. The drain water dripped onto the drain pan 6 is drained from the drain water dripping path 6a and collected in the drain tank 7, and the tank outlet 1a is opened to take out the drain tank 7 from the frame 1 and discard it.

  8 is a float arranged at the upper part of the drain tank 7, 8 a is a support shaft that rotatably supports the float 8, and 8 b is a floating part of the float 7 that is inserted into the drain tank 7 from the upper part of the drain tank 7. Yes, the float 8 rotates when the drain tank 7 is full of drain water. 8c is a switch operating part constituted by the movable end of the float 8 extending outward from the drain tank 7, and 9 is provided at a position where it abuts on the switch operating part 8c of the float 8 when the drain tank 7 is mounted on the frame 1. The float switch 9 is connected to the operation control circuit of the air conditioner. The air conditioner operates when the float switch 9 is closed and stops when the float switch 9 is open.

  When the drain tank 7 is housed in the frame 1 and the drain tank 7 is not filled with drain water, the float switch 9 is pushed by the switch operating portion 8c of the float 8 and is closed. The harmonic machine can be operated. Further, since the float switch 9 is opened when the drain tank 7 is not installed and when the tank is full, the operation of the air conditioner is stopped. With one float switch 9, the drain switch is not installed. It corresponds to both when the drain tank 7 is full.

  However, the conventional float type full water detection means generally has the float 8 attached to the drain tank 7. For this reason, when the drain water in the drain tank 7 is discarded, the float 8 moves or falls off. It was difficult to do the work. In addition, since the float 8 is a part that adheres to water and dries, it tends to generate mold and dirt, and this mold and dirt is easily noticeable by the user and makes the user feel uncomfortable. Further, when the drain tank 7 is cleaned, the float 8 is in the way, and the inside of the drain tank 7 cannot be cleaned cleanly, or it is necessary to remove the float 8 every time it is cleaned. It was a thing.

  In addition to the float type, there is a weight type full water detection means, and this type does not have a float mechanism in the drain tank 7, so that it is possible to easily dispose of waste water and cleaning work, but one float switch 9 Then, it is difficult to provide a detection mechanism for the drain tank 7, and there is a possibility that a serious trouble may occur that drain water flows out using the drain tank 7 without being installed. For this reason, in the conventional weight type, it is necessary to provide a switch for detecting the presence or absence of the drain tank 7 separately from the float switch 9 for detecting when the drain tank 7 is full.

  The present invention solves this problem, and proposes a structure in which the drain tank 7 does not have a float mechanism by attaching the float 8 to the frame 1 outside the drain tank 7 or to its constituent members. In the embodiment shown in the figure, the support shaft 8a of the float 8 is provided on the partition wall 1b, and the float 8 rotates about the partition wall 1b.

  10 is a drain tank lever attached to the partition wall 1b in the frame 1, 10b is a support shaft that rotatably supports the drain tank lever 10, and 10c is a movable end of the drain tank lever 10 that extends downward from the support shaft 10b. The tank contact portion 10d is constituted by the other movable end of the drain tank lever 10 extended from the support shaft 10b below the float 8 and 10e is a spring provided on the support shaft 10a of the drain tank lever 10. It is.

  When the drain tank 7 is not mounted, the drain tank lever 10 is held in a state where the tank contact portion 10c is separated from the partition wall 1b by the spring 10e and the float contact portion 10d lifts the float 8 upward.

  When the drain tank 7 is stored in the frame 1 in a state where the drain tank 7 is not filled with drain water, the drain tank lever 10 is rotated about the support shaft 10b by the tank contact portion 10c being pushed by the drain tank 7. As a result, the float contact portion 10d moves downward. As a result, the float 8 rotates around the support shaft 8a, the floating portion 8b is accommodated in the drain tank 7, and at the same time, the float switch 9 is pushed by the switch operating portion 8c to close the circuit, and the air conditioner operates. .

  When the operation is continued in this state and the drain tank 7 becomes full of water, the float 8b of the float 8 rises, the float 8 rotates, and the switch actuating part 8c and the float switch 9 are separated from each other. The switch 9 is opened to stop the operation of the air conditioner, and it is no longer necessary to have a float mechanism directly in the drain tank 7.

  On the other hand, when the drain tank 7 is taken out from the frame 1, the tank contact portion 10c of the drain tank lever 10 is opened, the drain tank lever 10 is rotated around the support shaft 10b by the spring 10e, and the float contact portion 10d is moved upward. To float up the float 8. As a result, the float 8 rotates about the support shaft 8a, the floating portion 8b rises from the drain tank 7, and at the same time, the switch operating portion 8c and the float switch 9 are separated from each other to open the float switch 9. The harmony machine stops operation.

  Accordingly, when the drain tank 7 is taken out from the frame 1, the float 8 b of the float 8 is positioned above the drain tank 7, so that the drain tank 7 opens the tank outlet 1 a without any obstacle and opens the frame 1. Can be taken out. Further, since there is no float mechanism in the drain tank 7, waste water and cleaning can be easily performed.

  Further, even when the operation of the air conditioner is stopped, the drain water of the evaporator 5 and the drain pan 6 does not immediately disappear, and the drain water falls from the drain water dropping path 6a even after the operation is stopped. Therefore, in order to completely store the falling drain water in the drain tank 7, it is necessary to take out the drain tank 7 after a while after the operation of the air conditioner is stopped. However, in practice, there are many cases in which the drain tank 7 is taken out during operation using the operation stop function based on the detection of the drain tank 7 or the drain tank 7 is taken out immediately after the operation is stopped due to full water detection. The drain water falls on the bottom of the inside and becomes soaked, and this place is a place that can be confirmed by the user, so there is a problem of reducing the product value. It was necessary to add a dedicated structure.

  In the embodiment of the present invention, reference numeral 10a denotes a drain stop cock provided on the drain tank lever 10, and the drain stop cock 10a is an opening of the drain water dropping path 6a when the drain tank 7 is attached to the frame 1. When the drain tank 7 is removed from the frame 1 and the drain tank lever 10 rotates about the support shaft 10b, the drain stop cock 10a closes the opening of the drain water dripping path 6a. ing. For this reason, even if the drain tank 7 is taken out immediately after the operation of the air conditioner or after the stoppage due to the detection of full water, the drain water falling from the drain pan 6 is stopped by the drain stop cock 10a. Drain water no longer drops on the bottom.

  Therefore, the drain tank lever 10 can be used for both the detection function of the drain tank 7 and the structure for preventing the dripping of the drain water, and it is not necessary to add a dedicated structure and can be manufactured at a very low cost.

It is sectional drawing of the air conditioner which shows the Example of this invention. It is principal part sectional drawing which shows the state at the time of the water conditioner of the air conditioner which shows the Example of this invention. It is principal part sectional drawing which shows the state which took out the drain tank of the air conditioner which shows the Example of this invention. It is a top view of the principal part of the air conditioner which shows the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Frame 2 Compressor 3 Capacitor 4 Decompressor 5 Evaporator 6 Drain pan 6a Drain water dripping route 7 Drain tank 8 Float 9 Float switch 10 Drain tank lever 10a Drain stop cock

Claims (2)

In the frame 1 of the air conditioner, there are provided a compressor 2 for compressing the refrigerant, a condenser 3 to which a high-temperature gaseous refrigerant is sent, and an evaporator 5 to which the liquefied refrigerant is sent via the decompressor 4;
Having a refrigeration cycle in which the refrigerant vaporized by the evaporator 5 is returned to the compressor 2;
A drain pan 6 is formed below the evaporator 5, and a drain water dripping path 6 a is provided below the drain pan 6. The lower drain water dripping path 6 a is a drain that communicates with a drain tank 7 that finally stores drain water. In an integrated air conditioner having a path,
A float 8 that varies depending on the water level in the drain tank 7 is provided in the frame 1 outside the drain tank 7 or a component thereof, and a float switch 9 that operates according to the position of the float 8 is provided in the frame 1. 7. A full water detection mechanism for an air conditioner characterized in that the water level in the tank 7 can be detected based on the position of the float 8 and the operating state can be changed, and the drain tank 7 does not have a float mechanism. A drain tank lever 10 is provided in the frame body 1 outside the drain tank 7 or in its constituent members, and a drain stop cock 10a is provided in a part of the drain tank lever 10,
When the drain tank 7 is not installed, the drain tank lever 10 moves the float 8 upward to operate the float switch 9 to stop the operation, and the drain stop cock 10a communicates with the drain tank 7 in the drain water dripping path 6a. Close the drainage route,
The full-water detection mechanism for an air conditioner according to claim 1, characterized by having both a drain water dripping prevention function when the drain tank (7) is not attached and a detection function of the drain tank (7).

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