CN218249436U - Three-pipe type hot gas bypass low-temperature working condition air-cooled condensation refrigeration dehumidification equipment - Google Patents

Abstract

The utility model relates to a freezing dehumidification technical field just discloses a three tubular steam bypass low temperature operating mode air-cooled condensation refrigeration dehumidification equipment, including freezing integrative heat exchanger of dehumidification, refrigeration compressor unit and freezing dehumidification cut-off equipment, through muffler interconnect between freezing integrative heat exchanger of dehumidification and the refrigeration compressor unit, freezing dehumidification cut-off equipment both ends are respectively through interconnect between dehumidification pipe and refrigeration pipe and the freezing integrative heat exchanger of dehumidification and the refrigeration compressor unit, through the control valve control to the dehumidification pipe on the cold dehumidification unit of steam bypass air-cooled condensation, realize the effective control to outdoor condensation heat exchanger and the integrative heat exchanger temperature of indoor freezing dehumidification. Simultaneously, through setting up the defrosting control valve on the dehumidification pipe, realize the defrosting operation to indoor heat exchanger frosting under the circumstances of guaranteeing that the unit does not shut down the operation, the defrosting control when realizing the low temperature heat exchanger dehumidification. Therefore, temperature control dehumidification under the low-temperature and low-humidity working condition is realized.

Description

Three-pipe type hot gas bypass low-temperature working condition air-cooled condensation refrigeration dehumidification equipment

Technical Field

The utility model relates to a freezing dehumidification technical field specifically is a freezing dehumidification equipment of three tubular steam bypass low temperature operating mode air-cooled condensation.

Background

The refrigeration dehumidification is the most common dehumidification method at the earliest time, and is widely applied to the production fields of mechanical manufacturing, optical instruments, electronics, food, chemistry, medicines, facility agriculture and the like. The freeze dehumidification is a dehumidification method of removing condensed water by cooling humid air to a temperature below the dew point, and is also called a dew point method. When the dew point method is adopted for dehumidification, in order to improve the dehumidification efficiency and reduce the dehumidification risk, the dew point above +4 ℃ is usually used as the limit of freezing dehumidification. Due to the fact that the condition that the heat exchanger frosts exists when the dew point is below 4 ℃, heat exchange efficiency of the system is reduced, and the system cannot stably dehumidify and control the temperature. At this time, dehumidification can be performed only by a high-energy-consumption rotary dehumidification method, which results in a complicated dehumidification system, increased energy consumption, and increased investment cost.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a three-pipe type steam bypass low temperature operating mode air-cooled condensation refrigeration dehumidification equipment.

(II) technical scheme

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a freezing dehumidification equipment of three tubular steam bypass low temperature operating mode air-cooled condensation, includes freezing integrative heat exchanger of dehumidification, refrigeration compressor unit and freezing dehumidification cut-off equipment, through muffler interconnect between freezing integrative heat exchanger of dehumidification and the refrigeration compressor unit, freezing dehumidification cut-off equipment both ends are respectively through interconnect between dehumidification pipe and the refrigeration pipe and freezing integrative heat exchanger of dehumidification and the refrigeration compressor unit.

Preferably, an inlet temperature sensor and an outlet temperature sensor are respectively arranged at two ends of the freezing and dehumidifying integrated heat exchanger.

Preferably, fans are arranged on the freezing and dehumidifying integrated heat exchanger and the refrigeration compressor unit.

Preferably, the refrigeration compressor set comprises a compressor, a condensation control valve and a condensation radiator, and the condensation control valve is arranged between the compressor and the condensation radiator.

Preferably, the condensing radiator is arranged adjacent to the fan.

Preferably, the freezing dehumidification cut-off device comprises a refrigeration control valve, a defrosting control valve and a dehumidification control valve, the refrigeration control valve is arranged on the refrigeration pipe, the dehumidification control valve is arranged on the dehumidification pipe, and the defrosting control valve is arranged between the refrigeration pipe and the dehumidification pipe.

(III) advantageous effects

Compared with the prior art, the utility model provides a freezing dehumidification equipment of three tubular steam bypass low temperature operating mode air-cooled condensation possesses following beneficial effect:

1. this freezing dehumidification equipment of three tubular steam bypass low temperature operating mode air-cooled condensation, through the control valve to the last dehumidification pipe of steam bypass air-cooled condensation refrigeration dehumidification unit, realize the effective control to outdoor condensation heat exchanger and the integrative heat exchanger temperature of indoor freezing dehumidification.

2. This frozen dehumidification equipment of three tubular steam bypass low temperature operating mode air-cooled condensation through setting up the defrosting control valve on the dehumidification pipe, realizes the defrosting operation to indoor heat exchanger frosting under the circumstances of guaranteeing the unit not to shut down the operation, the defrosting control when realizing the low temperature heat exchanger dehumidification. Therefore, temperature control dehumidification under the low-temperature and low-humidity working condition is realized.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the present invention;

in the figure: 1. a refrigeration and dehumidification integrated heat exchanger; 2. an inlet temperature sensor; 3. an outlet temperature sensor; 4. a fan; 5. a refrigeration compressor train; 6. a compressor; 7. a condensation control valve; 8. a condensing heat sink; 9. a freeze dehumidification cut-off; 10. a refrigeration control valve; 11. a defrosting control valve; 12. a dehumidification control valve; 13. a dehumidification pipe; 14. a refrigeration pipe; 15. an air return pipe; 16. the temperature of the inlet air; 17. and (5) air outlet temperature.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1, the refrigeration and dehumidification integrated heat exchanger includes a refrigeration and dehumidification integrated heat exchanger 1, a refrigeration compressor unit 5 and a refrigeration and dehumidification cut-off device 9, the refrigeration and dehumidification integrated heat exchanger 1 and the refrigeration compressor unit 5 are connected with each other through a return air pipe 15, and two ends of the refrigeration and dehumidification cut-off device 9 are connected with the refrigeration and dehumidification integrated heat exchanger 1 and the refrigeration compressor unit 5 through a dehumidification pipe 13 and a refrigeration pipe 14 respectively; an inlet temperature sensor 2 and an outlet temperature sensor 3 are respectively arranged at two ends of the freezing and dehumidifying integrated heat exchanger 1; the freezing and dehumidifying integrated heat exchanger 1 and the refrigeration compressor unit 5 are both provided with a fan 4; the refrigeration compressor unit 5 comprises a compressor 6, a condensation control valve 7 and a condensation radiator 8, wherein the condensation control valve 7 is arranged between the compressor 6 and the condensation radiator 8; the condensing radiator 8 is arranged adjacent to the fan 4; the refrigeration dehumidification cut-off device 9 comprises a refrigeration control valve 10, a defrosting control valve 11 and a dehumidification control valve 12, wherein the refrigeration control valve 10 is arranged on a refrigeration pipe 14, the dehumidification control valve 12 is arranged on a dehumidification pipe 13, and the defrosting control valve 11 is arranged between the refrigeration pipe 14 and the dehumidification pipe 13;

during the use, adopt three tubular steam bypass air-cooled refrigeration dehumidification unit + refrigeration dehumidification heat exchanger and the valve unit of controlling, constitute one set of collection refrigeration, dehumidification, integrative ring accuse unit of defrosting, this ring accuse unit can realize the accurate control to air temperature and humidity and to the heat exchanger defrosting operation when low temperature accuse is wet, and concrete flow principle is as follows:

in a refrigeration mode, a direct expansion type refrigeration compressor unit 5 drives a gaseous Freon working medium, the high-temperature and high-pressure Freon working medium is driven by a compressor 6, and after passing through a condensation control valve 7, the Freon working medium completely enters a condensation radiator 8 of the unit, the heat is radiated and exchanged with outdoor air in the condensation radiator 8, the Freon working medium after heat exchange is condensed into liquid, the low-temperature liquid Freon working medium is intercepted by a freezing and dehumidifying intercepting device 9 and then enters a freezing and dehumidifying integrated heat exchanger 1, evaporation and heat absorption are carried out in the freezing and dehumidifying integrated heat exchanger 1, the indoor air is cooled, the cooled Freon refrigeration working medium is changed into a low-temperature and low-pressure gaseous state, and the gaseous state enters an air suction port of the refrigeration compressor unit 5 in the unit through an air return pipe 15, and refrigeration cycle is completed;

in the dehumidification mode, the direct expansion type refrigeration compressor unit 5 drives gaseous Freon working media, the high-temperature and high-pressure Freon working media are driven by the compressor 6 and enter the heat exchanger through the unit dehumidification control valve 12 and the dehumidification pipe 13, and the heat is dissipated and exchanged with indoor air in the heat exchanger to heat the air. Meanwhile, the Freon working medium after heat exchange is condensed into liquid, the low-temperature liquid Freon working medium enters the freezing and dehumidifying integrated heat exchanger 1 through the refrigeration control valve 10, evaporation and heat absorption are carried out in the freezing and dehumidifying integrated heat exchanger 1, indoor air is cooled and dehumidified, dehumidification of the air is achieved by reducing the temperature to be below the dew point temperature of the air, and the temperature stability of the dehumidified air is ensured after the temperature is raised. Therefore, the temperature-raising capacity and the temperature-lowering capacity of the heat exchanger to the air can be accurately controlled through the dehumidification control valve 12 and the refrigeration control valve 10;

indoor air driven by a fan 4 passes through an inlet temperature sensor 2 at the inlet of a refrigeration and dehumidification evaporator and an outlet temperature sensor 3 at the outlet of a heat compensation heat exchanger, an inlet air temperature 16 value and an outlet air temperature 17 value are acquired, the inlet air temperature 16 and the outlet air temperature 17 are dynamically controlled, and when the outlet air temperature 17 is equal to the inlet air temperature 16, temperature reduction is not needed; when the air outlet temperature 17 is lower than the air inlet temperature 16, the temperature needs to be reduced; the temperature of the refrigeration and dehumidification system can be accurately controlled by the method through PID calculation;

during the defrosting mode, high-temperature high-pressure gaseous Freon working medium driven by the compressor 6 enters the freezing and dehumidifying integrated heat exchanger 1 through the unit dehumidifying control valve 12 and the defrosting control valve 11 to defrost, and the defrosted Freon returns to the air suction pipe of the compressor 6 through the air return pipe 15 to achieve defrosting and dehumidifying.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims (6)

1. The utility model provides a three-pipe formula steam bypass low temperature operating mode air-cooled condensation refrigeration dehumidification equipment, includes freezing integrative heat exchanger (1) of dehumidification, compressor unit (5) and freezing dehumidification cut-off equipment (9), its characterized in that: the freezing and dehumidifying integrated heat exchanger (1) is connected with the refrigerating compressor unit (5) through an air return pipe (15), and two ends of the freezing and dehumidifying cut-off device (9) are connected with the freezing and dehumidifying integrated heat exchanger (1) and the refrigerating compressor unit (5) through a dehumidifying pipe (13) and a refrigerating pipe (14) respectively.

2. The three-pipe hot gas bypass low-temperature working condition air-cooled condensation refrigeration dehumidification device as claimed in claim 1, wherein: an inlet temperature sensor (2) and an outlet temperature sensor (3) are respectively arranged at two ends of the freezing and dehumidifying integrated heat exchanger (1).

3. The three-pipe hot-gas bypass low-temperature working condition air-cooled condensation refrigeration dehumidification device as claimed in claim 1, wherein: and fans (4) are arranged on the freezing and dehumidifying integrated heat exchanger (1) and the refrigerating compressor unit (5).

4. The three-pipe hot-gas bypass low-temperature working condition air-cooled condensation refrigeration dehumidification device as claimed in claim 1, wherein: the refrigeration compressor unit (5) comprises a compressor (6), a condensation control valve (7) and a condensation radiator (8), wherein the condensation control valve (7) is arranged between the compressor (6) and the condensation radiator (8).

5. The three-pipe hot-gas bypass low-temperature working condition air-cooled condensation refrigeration dehumidification device as claimed in claim 4, wherein: and the condensation radiator (8) is arranged adjacent to the fan (4).

6. The three-pipe hot-gas bypass low-temperature working condition air-cooled condensation refrigeration dehumidification device as claimed in claim 1, wherein: freezing dehumidification cut-off equipment (9) are including refrigeration control valve (10), defrosting control valve (11) and dehumidification control valve (12), refrigeration control valve (10) set up on refrigeration pipe (14), dehumidification control valve (12) set up on dehumidification pipe (13), defrosting control valve (11) set up between refrigeration pipe (14) and dehumidification pipe (13).

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