Low-pressure and low-temperature outdoor unit

Abstract

The present invention relates to a low-pressure and low-temperature outdoor unit comprising a case (100) having a partitioned condensing-pipe chamber (320) in which a condensing pipe (310) is provided and a sprayer (330) is provided at the upper portion thereof so as to spray, toward the condensing pipe (310), the water supplied from the outside, wherein an exhaust passage (200) is formed in the height direction at the side surface of the case (100) while having the lower portion communicating with the condensing-pipe chamber (320), an outlet (240) formed at the upper end thereof, and an exhaust fan (230) formed at the upper portion thereof such that, in a state in which air, saturated steam, and heat inside the condensing-pipe chamber (320) are discharged to the outside of the case (100) according to the operation of the exhaust fan (230) so as to form low pressure inside the condensing-pipe chamber (320), the water sprayed by the sprayer is evaporated by means of the heat generated in the condensing pipe (310) in a low-pressure environment and cools the condensing pipe (310), and a falling-water collection well (400) is formed below the exhaust passage (200) so that the water generated by condensing the saturated steam inside the case (100) can be collected and discharged to the outside.

Description

Low pressure / low temperature outdoor unit

[0001] The present invention relates to an outdoor unit of an air conditioner (hereinafter referred to as an “outdoor unit”), and relates to an outdoor unit that maintains the inside of the outdoor unit at a low temperature environment to facilitate cooling of a refrigerant condensation tube and facilitate condensation and liquefaction of the refrigerant.

[0002] A conventional outdoor unit consists of a refrigerant compression pump (hereinafter referred to as the "compression pump"), a refrigerant condenser tube (hereinafter referred to as the "condenser tube") that condenses the refrigerant, and a blower fan that cools the condenser tube. During the condensation process of the compression pump, which liquefies the refrigerant, heat of condensation is generated. Cooling of the condenser tube relies on the sensible heat of the outside air supplied by the blower fan. High outside temperatures reduce the cooling effect, making condensation and liquefaction of the refrigerant difficult.

[0003] The present invention facilitates the liquefaction of refrigerant by cooling the condenser tube using the low-pressure, low-temperature latent heat of vaporization of water by forming a low-pressure air pressure within the outdoor unit. This reduces the load on the compression pump, thereby reducing energy consumption, i.e., electricity consumption.

[0004] The present invention proposes an outdoor unit that reduces energy consumption by maintaining the inside of the outdoor unit in a low-temperature environment to facilitate condensation and liquefaction of refrigerant.

[0005] The condenser tube of a conventional outdoor unit is exposed to the outside air and its cooling also depends on the sensible heat of the outside air from the blower. The present invention does not rely on the outside air as a cooling means of the outdoor unit, but blocks the outside air, forms a low-pressure state inside the outdoor unit, sprays external water inside the outdoor unit, maintains a low-temperature environment using the low-pressure, low-temperature latent heat of vaporization of the water, cools the condenser tube, and facilitates the condensation and liquefaction of the refrigerant.

[0006] The cooling of the outdoor unit of the present invention utilizes low-pressure, low-temperature evaporation of water, and thus has a higher cooling efficiency than existing outdoor units that rely on outside air for cooling, making it easy to condense and liquefy the refrigerant, thereby reducing the energy required for the compression pump and reducing carbon emissions accordingly. In addition, since the conditions of appearance, size, weight, piping, power consumption, operation control, etc. are the same or similar to those of existing outdoor units, horizontal exchange is easy. The outdoor unit of the present invention can be applied regardless of the size of small, medium, or large, and is particularly suitable for replacing GHP and EHP in medium and large-sized refrigeration, freezing, ice making, and system air conditioning.

[0007] Figure 1 is a cross-sectional view conceptually showing a schematic structure of a low-pressure, low-temperature outdoor unit according to the present invention.

[0008] The low-pressure, low-temperature outdoor unit of the present invention will be described in detail with reference to the attached Fig. 1. Fig. 1 is a longitudinal cross-sectional view conceptually showing a schematic structure of the low-pressure, low-temperature outdoor unit of the present invention.

[0009] As shown, the low-pressure, low-temperature outdoor unit of the present invention is composed of a case (100), an exhaust passage (200), a condensate droplet plate (210), an exhaust fan closing projection (220), an exhaust fan (230), an exhaust port (240), a compression pump (300), a condensate tube (310), a condensate tube chamber (320), a sprayer (330), an internal gas flow fan (340), a condensate droplet collector (400), a collector drainage pump (410), a drain valve (420), an electronic valve air intake port (500), a vacuum pressure gauge (510), a thermometer (520), etc.

[0010] The following is a detailed description of the names, structures, and functions of each symbol in Fig. 1.

[0011] The case (100) is completely sealed except for the exhaust passage (200). The exhaust fan (230) operates to exhaust air, creating a low pressure inside. Depending on the capability of the exhaust fan (230), the low pressure may be close to a vacuum. At this time, the sprayed water undergoes low-pressure, low-temperature evaporation. The volume of the evaporated water vapor increases approximately 1,700 times compared to that of water.

[0012] The exhaust passage (200) is located on the side of the case (100). The lower part communicates with the condensation chamber (320).

[0013] The condensation drip plate (210) is installed in a multi-stage manner at an angle in the exhaust passage (200). It induces condensation when saturated steam is discharged and captures and drips the condensation.

[0014] The exhaust fan closing projection (220) is structured to wrap around the end of the exhaust fan (230) blade to prevent backflow and maintain airtightness.

[0015] The exhaust fan (230) exhausts air, saturated steam, and heat inside the outdoor unit. It is automatically controlled according to the pressure, temperature, and humidity inside the outdoor unit, and operates variably with an appropriate load.

[0016] The exhaust port (240) discharges residual air and saturated water vapor to the outside.

[0017] The compression pump (300) has a closed waterproof structure and is exposed to the low temperature of the condensation chamber (320) to ensure smooth cooling.

[0018] The condenser tube (310) has the same structure as the condenser tube of the existing outdoor unit.

[0019] The condensation chamber (320) is an internal part of the outdoor unit, and a compression pump (300), a condensation chamber (310), a sprayer (330), and an internal gas flow fan (340) are installed therein. It is isolated from the exhaust passage (200) and the lower part is connected to it.

[0020] The sprayer (330) has an appropriate number of spray nozzles installed on the upper part of the condensation chamber (320) and receives water from an external source. The water supply must maintain an appropriate water pressure to ensure smooth fine spraying, and general tap water is used. The sprayed fine water droplets evaporate at low pressure and temperature, and the evaporated water vapor has a volume approximately 1,700 times that of water, so it has a sufficient cooling effect.

[0021] The internal gas flow fan (340) is installed above the sprayer (330) and functions to increase cooling efficiency by circulating the internal gas. The wind direction is upward, allowing the sprayed fine water droplets to remain inside for a longer period of time, thereby assisting low-temperature evaporation.

[0022] The dripping water collection tank (400) stores all condensation and dripping water inside the outdoor unit.

[0023] The drainage pump (410) forcibly discharges water when the water level exceeds a certain level. To ensure safe and reliable drainage, a dual drainage pump with a two-line level is installed.

[0024] The drain valve (420) is closed during summer air conditioning operation. It is opened when the air conditioning is stopped or during seasons other than summer.

[0025] The electronic air intake (500) is installed as an electrically operated automatic valve, and is closed during summer cooling operation and opened during winter heat pump heating operation. It is not necessary for a cooling-only unit, not a heat pump.

[0026] The vacuum pressure gauge (510) measures the vacuum level inside the outdoor unit when the cooling system is in operation in the summer.

[0027] The thermometer (520) measures the temperature inside the outdoor unit in summer and winter.

[0028]

[0029] [Explanation of symbols]

[0030] 100: Case, 200: Exhaust passage,

[0031] 210: Condensation water drip plate, 220: Exhaust fan closing projection,

[0032] 230: exhaust fan, 240: exhaust outlet,

[0033] 300: Compression pump, 310: Condenser tube,

[0034] 320: Condensation chamber, 330: Sprayer,

[0035] 340: Internal gas flow fan, 400: Condensation water collection device,

[0036] 410; Condensate discharge pump, 420: Drain valve,

[0037] 500: Electronic air intake, 510: Vacuum pressure gauge,

[0038] 520: Thermometer.

Claims

1. A case (100) comprising a condensation chamber (320) formed by installing a condensation tube (310) and installing a sprayer (330) at the top to spray water supplied from the outside toward the condensation tube (310), An exhaust passage (200) is formed in the height direction on the side of the case (100), and the lower part is connected to the condensation chamber (320), and an exhaust port (240) is formed at the upper part, while an exhaust fan (230) is formed at the upper part. By discharging the air, saturated water vapor, and heat inside the condensation chamber (320) to the outside of the case (100) according to the operation of the exhaust fan (230), the inside of the condensation chamber (320) is formed at a low pressure, and the water sprayed from the sprayer is evaporated by the heat generated in the condensation chamber (310) in the low pressure environment, thereby cooling the condensation chamber (310). A low-pressure, low-temperature outdoor unit in which a water collection well (400) is formed below the above exhaust passage (200) so that water formed by condensation of saturated water vapor inside the case (100) can be collected and discharged to the outside.

2. In paragraph 1, The above discharge port (240) is a low-pressure, low-temperature outdoor unit formed to face the upper part of the condensation chamber (320).

3. In paragraph 1, Inside the above exhaust passage (200), a condensation water drop plate (210) is formed with a downward slope. The above condensation water droplet plate (210) is a low-pressure, low-temperature outdoor unit that induces condensation of discharged water vapor by forming multiple condensation plates in a multi-stage manner in the height direction and causes it to fall to the above condensation collection tank (400).

4. In paragraph 1, A low-pressure, low-temperature outdoor unit in which an internal gas flow fan (340) is formed on the ceiling of the above condensation chamber (320) to increase cooling efficiency by flowing the gas inside the above condensation chamber (320).

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