JPH0861702A - Integral type air conditioner - Google Patents

Abstract

PURPOSE: To prevent explosion by a method wherein an inflammable refrigerant leaking from a refrigerating cycle is made to flow outside an air conditioner and detection by a gas sensor is surely conducted. CONSTITUTION: A casing opening 12 communicating with the air outside an air conditioner is provided in the bottom or the lower part of a side wall of a main body casing 2 wherein a refrigerating cycle part 5 is disposed, and an electrical control part 11 is disposed above the refrigerating cycle part 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an integrated air conditioner such as a dehumidifier or a vertical air conditioner in which a combustible gas such as propane is mixed as a refrigerant for a refrigeration cycle.

[0002]

2. Description of the Related Art Conventionally, the structure of an integrated air conditioner of this type will be described with reference to FIG.

FIG. 5 is a sectional view of a conventional integrated air conditioner. In FIG. 5, a refrigerant which is not a combustible gas is used in the integrated air conditioner body 1. An air passage 9 having a heat exchanger 6 which is a part of the refrigeration cycle unit 5 and a blower 8 is disposed adjacent to the upper portion of the main body 1, and the air passage 9 is provided.
An electric control unit 11 was provided on the back surface of the. Also,
At the upper part of the side wall where the refrigeration cycle unit 5 is arranged, the compressor 7
No opening was provided for heat dissipation of No.

Further, conventionally, a suction grill section 3, a heat exchanger 6 and a blow-out grill section 4 are arranged as an air passage 9 so as to be connected to each other, and in particular, a refrigeration cycle portion 5 having a compressor 7 is necessarily communicated with the air passage 9. The structure was not

Further, conventionally, no gas sensor for detecting a refrigerant gas which is a combustible gas has been provided.

[0006]

However, in the above structure, when a flammable gas such as propane is used as the refrigerant of the refrigeration cycle, the refrigerant is a gas heavier than air. When a refrigerant leak occurs in the upper part, there is a risk that the refrigerant gas reaches the electric control unit 11 having a contact relay that may particularly generate a spark and cause an explosion. Further, when there is no opening and the refrigeration cycle section 5 is not in communication with the air outside the machine, there is a risk that the flammable gas leaked to the lower part of the main body 1 is filled with high concentration and explodes early. .

Further, since the refrigeration cycle section 5 having the compressor 7 is not necessarily structured to communicate with the ventilation passage 9, the refrigerant gas leaked by the operation of the blower 8 is sucked and discharged to the outside of the machine. Then, I could not avoid the explosion.

Further, since a gas sensor for detecting a refrigerant gas which is a flammable gas is not provided, it cannot be detected if a refrigerant leak occurs, so that the refrigerant leak of the flammable gas is not noticed, leading to an explosion. I was afraid.

The present invention is intended to solve the above-mentioned problems of the prior art, and aims to prevent the explosion by causing the flammable gas leaking from the refrigeration cycle portion to flow out of the machine to prevent the concentration of the flammable gas from increasing. Is.

Another object of the present invention is to detect flammable gas leaking from the refrigeration cycle section by a gas sensor at an early stage to notify the gas leak and to prevent explosion.

[0011]

In order to achieve the above object, the present invention provides an outer box opening communicating with air outside the machine at the bottom or side wall where the refrigeration cycle is provided, and The electric control unit is arranged above the refrigeration cycle unit.

Further, according to the present invention, a gas sensor for detecting a refrigerant gas is arranged in the vicinity of an outer box opening provided on a bottom surface or a lower portion of a side wall where the refrigeration cycle section is arranged.

Further, according to the present invention, the outer box opening provided on the bottom surface or the lower part of the side wall where the refrigeration cycle section is arranged, and the flow of air sucked from the outer box opening by the blower pass through the refrigeration cycle. Therefore, the water pan is provided with a water pan opening.

Further, according to the present invention, a gas sensor for detecting the refrigerant gas is arranged in the ventilation passage.

[0015]

According to the present invention, since the combustible gas is a gas heavier than air because the electric control unit is arranged above the refrigeration cycle unit in the above-described structure, for example, refrigerant leakage occurs in the upper part of the heat exchanger. In this case, since the refrigerant gas does not easily reach the electric control unit including the contact relay that may generate a spark, the risk of causing an explosion is reduced. Further, the refrigerant gas that has flowed out downward can naturally flow out to the outside of the machine from the outer box opening of the bottom surface or the side wall, and it is possible to prevent the combustible gas from becoming highly concentrated in the main body and prevent explosion.

Further, since the gas sensor for detecting the refrigerant gas is arranged in the vicinity of the outer box opening provided on the bottom surface or the lower portion of the side wall where the refrigeration cycle is arranged, the refrigerant gas heavier than the leaked air is discharged downward. If it spills into the box, it will start to collect in the lower part of the main unit and then to the outer box opening provided on the bottom or the lower part of the side wall.Therefore, the gas sensor close to this outer box opening will reliably detect and notify In addition, you can take measures to prevent explosion.

Further, the outer box opening provided on the bottom surface or the lower part of the side wall where the refrigeration cycle section is disposed is used as a water tray so that the flow of air sucked from the outer box opening by the blower passes through the refrigeration cycle. By providing the water pan opening, suction the refrigerant gas leaked by the operation of the blower,
It is possible to prevent the explosion by forcibly discharging it to the outside of the machine through the ventilation passage to dilute the gas concentration.

Further, by disposing the gas sensor for detecting the refrigerant gas in the ventilation passage, even if a gas leak occurs at a portion where the refrigeration cycle portion is provided, the suction by the operation of the blower causes the gas to be concentrated in the ventilation passage. It is guided and can be easily detected by the gas sensor, and it is possible to take notice and take measures to prevent explosion.

[0019]

【Example】

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to FIG.
Will be described with reference to. The same numbers are used for the same components as those described in the conventional example.

FIG. 1 is a sectional view of an integrated air conditioner according to a first embodiment of the present invention. In FIG. 1, reference numeral 1 is a main body of an integrated air conditioner, in which an outer casing 2 is formed with an intake grill portion 3 and an outlet grill portion 4, and a refrigeration cycle portion in which a combustible gas such as propane is used as a refrigerant. 5, an air passage 9 having a heat exchanger 6, a compressor 7, and a blower 8;
A water tray 10 is provided. The electric control unit 11 is arranged above the refrigeration cycle unit 5 and above the main body 1. An outer box opening 12 is provided on the bottom surface or the lower portion of the side wall near the compressor 7.

In the above construction, for example, when a refrigerant leak occurs in the heat exchanger 6, the refrigerant is a gas heavier than air, so when the operation of the main body is stopped, the flow of the leaked refrigerant gas flows downward and the compressor 7 It is possible to prevent the flammable gas from naturally increasing to a high concentration in the main body 1 through the outer box opening 12 in the vicinity of the bottom surface or the lower portion of the side wall and to prevent an explosion. Since the electric control unit 11 having the contact relay that may particularly generate a spark is arranged above the refrigeration cycle unit 5, it is difficult for the refrigerant gas to reach,
Explosion risk is low.

(Embodiment 2) A second embodiment of the present invention will be described with reference to FIG. The same components as those described in the first embodiment are designated by the same reference numerals.

FIG. 2 is a sectional view of the integrated air conditioner of the second embodiment of the present invention. In FIG. 2, reference numeral 13 is a gas sensor for detecting a refrigerant gas which is a combustible gas, and is provided in the vicinity of the compressor 7 and in the vicinity of the outer box opening 12 on the bottom surface or the lower portion of the side wall.

In the above structure, when the refrigerant gas heavier than the leaked air flows downward, it starts to collect in the lower part of the main body 1 and further flows into the outer case opening 12, so that the outer case opening 12 is approached. The detected gas sensor 13 can reliably detect and notify, and a means for preventing explosion can be taken.

(Embodiment 3) A third embodiment of the present invention will be described with reference to FIG. The same components as those described in the first embodiment are designated by the same reference numerals.

FIG. 3 is a sectional view of an integrated air conditioner according to a third embodiment of the present invention. In FIG. 3, a suction grill portion 3, a heat exchanger 6 and a ventilation passage 9 are arranged in a linked manner, and a water tray 10 located below them has a water tray opening for communicating the suction grill portion 3 and the compressor 7 space. A section 14 is provided. Further, an outer box opening 12 near the bottom of the compressor or on the side wall is located at a position opposite to the water pan opening 14 with respect to the compressor 7.

In the above structure, when a refrigerant leak occurs in the refrigeration cycle section 5 near the compressor 7, the refrigerant is a gas heavier than air, so that it tries to stay downward, but during operation of the main body, it is caused by the operation of the blower. The flow of air sucked from the outer box opening 12 at the bottom of the bottom wall or the side wall passes through the inside of the refrigeration cycle unit 5, and the leaked refrigerant gas is combined with the water pan opening 14 and further through the ventilation passage 9, It can be forcibly discharged from the blow-out grill section 4 to the outside of the machine to dilute the gas concentration and prevent an explosion.

(Embodiment 4) A fourth embodiment of the present invention will be described with reference to FIG. The same components as those described in the first embodiment are designated by the same reference numerals.

FIG. 4 is a sectional view of an integrated air conditioner according to a fourth embodiment of the present invention. In FIG. 4, 13 is a gas sensor for detecting a refrigerant gas which is a combustible gas, and is provided in the ventilation passage 9.

In the above structure, the refrigerant gas leaked at a portion of the refrigeration cycle portion 5 is intensively guided into the ventilation passage 9 by suction by the operation of the blower 8 and can be easily detected by the gas sensor 13. , It is possible to notify and take measures to prevent explosion.

[0031]

As is apparent from the above description, the present invention has the following advantages.
The bottom of the refrigeration cycle or the lower part of the side wall has an outer box opening that communicates with the air outside the machine, and the electric control section is located above the refrigeration cycle section. Is a gas that is heavier than air, so it can flow out downward, and it can prevent the flammable gas from becoming a high concentration inside the main unit by spontaneously flowing out of the machine through the outer box opening on the bottom or side wall, and thus preventing an explosion. it can. Further, since the refrigerant gas does not easily reach the electric control unit, the risk of causing an explosion is reduced.

Further, since the gas sensor for detecting the refrigerant gas is arranged in the vicinity of the outer box opening provided on the bottom surface or the lower portion of the side wall where the refrigeration cycle is arranged, the refrigerant gas heavier than the leaked air is directed downward. In case of spillage, the gas will start to collect in the lower part of the main body and further to flow into the outer box opening provided on the bottom surface or the lower part of the side wall.Therefore, the gas sensor close to this opening surely detects and notifies Measures to prevent explosion can be taken.

Further, an air passage connected to the refrigeration cycle portion is provided, and an outer box opening provided on the bottom surface or the lower portion of the side wall where the refrigeration cycle portion is provided is such that the flow of air sucked from the opening is frozen by the blower. Since the water pan opening is provided in the water pan to pass through the cycle, the refrigerant gas leaked by the operation of the blower is sucked and forcedly discharged to the outside of the machine through the ventilation passage to dilute the gas concentration. You can prevent the explosion.

Further, by disposing the gas sensor for detecting the refrigerant gas in the ventilation passage, even if a gas leak occurs at a portion where the refrigeration cycle portion is provided, the suction of the blower operation centrally guides it into the ventilation passage. Then, it becomes possible to easily detect with a gas sensor, and it is possible to take a notice and take measures to prevent an explosion.

As described above, the present invention aims to improve the safety of the integrated air conditioner in which a combustible gas is mixed as the refrigerant of the refrigeration cycle and to protect human life.

[Brief description of drawings]

FIG. 1 is a sectional view of an integrated air conditioner according to a first embodiment of the present invention.

FIG. 2 is a sectional view of an integrated air conditioner according to a second embodiment of the present invention.

FIG. 3 is a sectional view of an integrated air conditioner according to a third embodiment of the present invention.

FIG. 4 is a sectional view of an integrated air conditioner according to a fourth embodiment of the present invention.

FIG. 5 is a cross-sectional view of a conventional integrated air conditioner

[Explanation of symbols]

 2 Outer box 5 Refrigeration cycle section 6 Heat exchanger 7 Compressor 8 Blower 9 Ventilation path 10 Water pan 11 Electric control section 12 Outer box opening 13 Gas sensor 14 Water pan opening

Claims (4)

[Claims] 1. A heat exchanger, a refrigeration cycle section in which a compressor is connected by a refrigerant pipe, a ventilation path having a blower, and an electric control section, and the outside of the bottom of the bottom wall or side wall where the refrigeration cycle section is disposed. An integrated air conditioner in which an outer box opening that communicates with the air is disposed, and an electric control unit is disposed above the refrigeration cycle unit. 2. The integrated air conditioner according to claim 1, wherein a gas sensor for detecting the refrigerant gas is arranged in the vicinity of an outer box opening provided on the bottom surface or the lower portion of the side wall where the refrigeration cycle section is arranged. 3. An outer box opening provided on a bottom surface or a lower part of a side wall where the refrigeration cycle section is disposed, and a water tray for allowing a flow of air sucked from the outer box opening by the blower to pass through the refrigeration cycle section. A water pan opening is provided.
The integrated air conditioner described. 4. The integrated air conditioner according to claim 3, wherein a gas sensor for detecting the refrigerant gas is arranged in the ventilation passage.