Air conditioning system utilizing condensation heat

Abstract

The utility model discloses an air conditioning system utilizing condensation heat, and relates to the technical field of petrochemical engineering. Comprising a constant-temperature and constant-humidity air conditioning unit, a fresh air inlet formed in one side of the constant-temperature and constant-humidity air conditioning unit, an air outlet formed in the other side of the constant-temperature and constant-humidity air conditioning unit, a compressor arranged in the constant-temperature and constant-humidity air conditioning unit and an outdoor air-cooled condenser arranged outside the constant-temperature and constant-humidity air conditioning unit. A first air treatment air duct and a second air treatment air duct are independently arranged in the constant-temperature and constant-humidity air conditioning unit, and both the first air treatment air duct and the second air treatment air duct exchange heat with the outdoor air-cooled condenser; air conditioner refrigerants in the compressor are used for heating or reheating the first air treatment air duct and the second air treatment air duct correspondingly. Compared with a traditional constant-temperature and constant-humidity system arranged in the anti-explosion cabinet room, the heat exchange coil reheats or heats air by means of condensation heat of air conditioner refrigerants, electric energy consumption in the operation process of the air conditioner system is reduced, and the operation economical efficiency of the system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of petrochemical engineering, and more specifically to the technical field of an air-conditioning system utilizing condensation heat. Background Art

[0002] At present, for anti-explosion cabinet rooms (equipped with auxiliary rooms such as cabinet rooms, UPS rooms, and engineer stations) with a building area of less than 300 m2 in petrochemical enterprises in China, most of them adopt a set of air-cooled constant temperature and humidity air-conditioning system with primary return air and all-air. During the summer refrigeration process, when the system needs to operate at partial load, due to the constant supply air volume, the mixed air treated to the dew point by the surface cooler needs to be reheated through the electric heating section to reduce the supply air temperature difference before being sent into the room to ensure the indoor temperature and humidity requirements. In winter, since the cabinet room and the UPS room need refrigeration, while the auxiliary rooms such as the engineer station need heating, duct-type electric heaters are installed at the supply air end of the auxiliary rooms such as the engineer station to reheat the air that has been cooled by the surface cooler before being sent into the room to ensure the indoor temperature and humidity requirements. The above air-conditioning system has the deficiency of reheating the cooled air by using electric energy, resulting in energy waste. Content of the Utility Model

[0003] The purpose of the utility model is to provide an air-conditioning system utilizing condensation heat to solve the technical problem that the existing air-conditioning system reheats the cooled air by using electric energy, resulting in energy waste. The utility model can reheat air by using condensation heat and can realize simultaneous cooling and heating in winter.

[0004] The utility model specifically adopts the following technical solutions to achieve the above purposes:

[0005] The utility model provides an air-conditioning system utilizing condensation heat, which includes a constant temperature and humidity air-conditioning unit, a fresh air inlet arranged on one side of the constant temperature and humidity air-conditioning unit, an air outlet arranged on the other side of the constant temperature and humidity air-conditioning unit, a compressor arranged inside the constant temperature and humidity air-conditioning unit, and an outdoor air-cooled condenser arranged outside the constant temperature and humidity air-conditioning unit. An air treatment air duct one and an air treatment air duct two are independently arranged inside the constant temperature and humidity air-conditioning unit, and both the air treatment air duct one and the air treatment air duct two exchange heat with the outdoor air-cooled condenser;

[0006] The air-conditioning refrigerant in the compressor is respectively used for heating or reheating in the air treatment air duct one and the air treatment air duct two.

[0007] Specifically, compared with the traditional constant temperature and humidity system arranged in the anti-explosion cabinet room, the heat exchange coils utilize the condensation heat of the air-conditioning refrigerant to reheat or heat the air, reducing the electric energy consumption during the operation of the air-conditioning system and improving the economic efficiency of the system operation.

[0008] In one embodiment, a filter and a humidifier are further included. The filter and the humidifier are arranged in the housing at one end close to the fresh air inlet along the air flow direction, and are arranged at the air inlet front ends of the first air handling duct and the second air handling duct.

[0009] In one embodiment, a constant temperature and humidity air conditioner unit includes a housing, a blower arranged in the housing on one side close to the fresh air inlet, and a transverse partition arranged in the housing on one side far from the fresh air inlet. The transverse partition divides the interior of the housing into a lower first air handling duct and an upper second air handling duct. The blower is respectively communicated with the first air handling duct and the second air handling duct.

[0010] In one embodiment, a first heat exchange coil and a surface cooler are arranged in the first air handling duct;

[0011] The air outlet of the blower is divided into two pipelines. One of the pipelines is connected to the air inlet of the surface cooler, and a second electric air volume regulating valve is arranged on this pipeline. The air outlet of the surface cooler is communicated with the air inlet of the first heat exchange coil, and the air outlet of the first heat exchange coil is communicated with the air conditioning room.

[0012] In one embodiment, the refrigerant outlet with waste heat of the compressor is respectively connected with a first pipeline, a second pipeline and a third pipeline, and a first solenoid valve, a second solenoid valve and a third solenoid valve are respectively arranged on the first pipeline, the second pipeline and the third pipeline.

[0013] In one embodiment, the first pipeline and the third pipeline are respectively communicated with the medium inlet of the first heat exchange coil and the medium inlet of the outdoor air-cooled condenser. The medium outlet of the first heat exchange coil is communicated with the medium inlet of the outdoor air-cooled condenser. The medium outlet of the outdoor air-cooled condenser is communicated with the medium inlet of the surface cooler. The medium outlet of the surface cooler is communicated with the medium inlet of the compressor.

[0014] Specifically, in the first air handling duct, the first heat exchange coil is arranged behind the surface cooler to replace the electric heating section in the traditional air conditioner unit; the first heat exchange coil is connected in series with the outdoor air-cooled condenser; in summer, the first electric air volume regulating valve and the second solenoid valve are in the closed state, and the second and third electric air volume regulating valves are in the open state; when the indoor temperature in the cabinet room is lower than the control range, the opening degrees of the first solenoid valve and the third solenoid valve are controlled, and an appropriate amount of high-temperature refrigerant compressed by the compressor is introduced to reheating the air cooled by the surface cooler, and the processed air is respectively sent into each air conditioning room to meet the indoor temperature and humidity requirements.

[0015] In one embodiment, a second heat exchange coil is arranged in the second air handling duct;

[0016] The air outlet of the air supply fan is divided into two pipelines. One of the pipelines is connected to the air inlet of the second heat exchange coil, and a first electric air volume regulating valve is arranged on this pipeline. The air outlet of the second heat exchange coil is communicated with the air-conditioned room.

[0017] In one embodiment, the second pipeline is respectively communicated with the medium inlet of the second heat exchange coil. The medium outlet of the second heat exchange coil is communicated with the medium inlet of the outdoor air-cooled condenser. The medium outlet of the outdoor air-cooled condenser is communicated with the medium inlet of the surface cooler. The medium outlet of the surface cooler is communicated with the medium inlet of the compressor.

[0018] Specifically, in the second air handling air duct, a second heat exchange coil is arranged. The second heat exchange coil is connected in series with the outdoor air-cooled condenser to replace the air duct electric heater in the traditional air-conditioning system for directly heating air. In winter, the first electric air volume regulating valve is in the open state, and the third electric air volume regulating valve is in the closed state. Adjust the opening degrees of the first and second electric air volume regulating valves so that the air volume entering the second air handling air duct is the air supply volume of the room that needs heating. According to the room temperature in the room that needs heating, control the opening degrees of the first solenoid valve and the third solenoid valve. The second heat exchange coil is fed with an appropriate amount of high-temperature refrigerant compressed by the compressor, and the condensed heat is used to heat the humidified air. The heated air is sent into the room that needs heating to meet the indoor temperature and humidity requirements. The remaining air passes through the first air handling air duct, and the processed air is sent into the room that needs cooling. The processing process is the same as in summer. Thus, simultaneous cooling and heating in winter are achieved.

[0019] In one embodiment, the air outlet of the first heat exchange coil is divided into two pipelines. One pipeline is communicated with the air inlets of the UPS room and the cabinet room, and the other pipeline is communicated with the air outlet pipeline of the second heat exchange coil. The air outlet of the second heat exchange coil is communicated with the air inlet of the engineer station.

[0020] In one embodiment, the return air outlets of the cabinet room and the engineer station are both communicated with the fresh air inlet.

[0021] Specifically, two independent first air handling air ducts and second air handling air ducts are arranged inside the air-cooled constant temperature and humidity air-conditioning unit. The fresh air and the return air are mixed, processed by the air filter and the humidifier (only operating in winter), and then sent to the first air handling air duct and the second air handling air duct by the air supply fan.

[0022] The beneficial effects of the present utility model are as follows:

[0023] 1. Compared with the traditional constant temperature and humidity system arranged in the explosion-proof cabinet room, the heat exchange coils all use the condensed heat of the air-conditioning refrigerant to reheate or heat the air, reducing the power consumption during the operation of the air-conditioning system and improving the economic efficiency of the system operation.

[0024] 2. In the summer condition, the air only processed by the first air handling duct is sent into each room through the air duct; in the winter condition, the air processed by the first air handling duct is sent into the rooms that need refrigeration through the air duct, and the air processed by the second air handling duct is sent into the rooms that need heating through the air duct, realizing simultaneous cooling and heating in winter.

[0025] 3. In the summer condition, the first heat exchange coil in the first air handling duct replaces the electric heater in the traditional air conditioner unit; in the winter condition, the second heat exchange coil in the second air handling duct replaces the electric heater in the air duct of the traditional air conditioning system; both the first and second heat exchange coils utilize the condensation heat of the air conditioner refrigerant to reheat or heat the air, reducing the power consumption during the operation of the air conditioning system and improving the economic efficiency of the system operation. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0027] Figure 1 is the structural schematic diagram of the present invention;

[0028] Figure 2 is Figure 1 the partial enlarged view of one side;

[0029] Figure 3 is Figure 2 the partial enlarged view of the other side;

[0030] Reference Numerals: 1 - First solenoid valve, 2 - Second solenoid valve, 3 - Third solenoid valve, 4 - Expansion valve, 5 - Compressor, 6 - Outdoor air-cooled condenser, 7 - First heat exchange coil, 8 - Second heat exchange coil, 9 - Surface cooler, 10 - Humidifier, 11 - First check valve, 12 - Second check valve, 13 - Filter, 14 - First electric air volume regulating valve, 15 - Second electric air volume regulating valve, 16 - Third electric air volume regulating valve, 17 - Air supply fan. Detailed Embodiments

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0034] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", "upper", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0035] Embodiment 1

[0036] As Figures 1 to 3 shown, this embodiment provides an air conditioning system that utilizes condensation heat, including a constant temperature and humidity air conditioning unit, a fresh air inlet provided on one side of the constant temperature and humidity air conditioning unit, an air outlet provided on the other side of the constant temperature and humidity air conditioning unit, a compressor 5 provided inside the constant temperature and humidity air conditioning unit, and an outdoor air-cooled condenser 6 provided outside the constant temperature and humidity air conditioning unit. An air treatment air duct one and an air treatment air duct two are independently provided inside the constant temperature and humidity air conditioning unit, and both the air treatment air duct one and the air treatment air duct two exchange heat with the outdoor air-cooled condenser 6;

[0037] The air conditioning refrigerant in the compressor 5 is respectively used for heating or reheating in the air treatment air duct one and the air treatment air duct two.

[0038] Specifically, compared with the traditional constant temperature and humidity system provided in the explosion-proof cabinet room, the heat exchange coils all use the condensation heat of the air conditioning refrigerant to reheat or heat the air, reducing the power consumption during the operation of the air conditioning system and improving the economic efficiency of the system operation.

[0039] Embodiment 2

[0040] As Figures 1 to 3As shown in the figure, this embodiment provides an air-conditioning system that utilizes condensation heat, including a constant temperature and humidity air-conditioning unit, a fresh air inlet provided on one side of the constant temperature and humidity air-conditioning unit, an air outlet provided on the other side of the constant temperature and humidity air-conditioning unit, a compressor 5 provided inside the constant temperature and humidity air-conditioning unit, and an outdoor air-cooled condenser 6 provided outside the constant temperature and humidity air-conditioning unit. An air treatment air duct one and an air treatment air duct two are independently provided inside the constant temperature and humidity air-conditioning unit, and both the air treatment air duct one and the air treatment air duct two exchange heat with the outdoor air-cooled condenser 6;

[0041] The air-conditioning refrigerant in the compressor 5 is respectively used for heating or reheating in the air treatment air duct one and the air treatment air duct two.

[0042] It also includes a filter 13 and a humidifier 10. The filter 13 and the humidifier 10 are arranged in the shell at one end close to the fresh air inlet along the air flow direction, and are provided at the front end of the air inlet of the air treatment air duct one and the air treatment air duct two.

[0043] Embodiment 3

[0044] As Figures 1 to 3 shown in the figure, this embodiment is a further optimization based on Embodiment 1 or Embodiment 2. Specifically:

[0045] The constant temperature and humidity air-conditioning unit includes a shell, a blower 17 provided inside the shell on the side close to the fresh air inlet, and a transverse partition provided inside the shell on the side far from the fresh air inlet. The transverse partition divides the inside of the shell into the air treatment air duct one at the lower part and the air treatment air duct two at the upper part, and the blower 17 is respectively communicated with the air treatment air duct one and the air treatment air duct two.

[0046] A first heat exchange coil 7 and a surface cooler 9 are provided inside the air treatment air duct one;

[0047] The air outlet of the blower 17 is divided into two pipelines. One of the pipelines is connected to the air inlet of the surface cooler 9, and a second electric air volume regulating valve 15 is provided on this pipeline. The air outlet of the surface cooler 9 is communicated with the air inlet of the first heat exchange coil 7, and the air outlet of the first heat exchange coil 7 is communicated with the air-conditioned room.

[0048] The refrigerant outlet of the compressor 5 with waste heat is respectively connected with a first pipeline, a second pipeline, and a third pipeline, and a first solenoid valve 1, a second solenoid valve 2, and a third solenoid valve 3 are respectively provided on the first pipeline, the second pipeline, and the third pipeline.

[0049] The first pipeline and the third pipeline are respectively communicated with the medium inlet of the first heat exchange coil 7 and the medium inlet of the outdoor air-cooled condenser 6. The medium outlet of the first heat exchange coil 7 is communicated with the medium inlet of the outdoor air-cooled condenser 6. The medium outlet of the outdoor air-cooled condenser 6 is communicated with the medium inlet of the surface cooler 9. The medium outlet of the surface cooler 9 is communicated with the medium inlet of the compressor 5.

[0050] Specifically, in the first air handling duct, a first heat exchange coil 7 is arranged behind the surface cooler 9 to replace the electric heating section in the traditional air conditioner unit; the first heat exchange coil 7 is connected in series with the outdoor air-cooled condenser 6; in summer, the first electric air volume regulating valve 14 and the second solenoid valve 2 are in the closed state, and the second and third dynamic air volume regulating valves are in the open state; when the indoor temperature in the cabinet room is lower than the control range, the opening degrees of the first solenoid valve 1 and the third solenoid valve 3 are controlled, and an appropriate amount of high-temperature refrigerant compressed by the compressor 5 is introduced to reheating the air cooled by the surface cooler 9, and the processed air is respectively sent to each air-conditioned room to meet the indoor temperature and humidity requirements.

[0051] Embodiment 4

[0052] As Figures 1 to 3 shown, this embodiment is further optimized on the basis of Embodiment 3. Specifically:

[0053] A second heat exchange coil 8 is arranged in the second air handling duct;

[0054] The air outlet of the air supply fan 17 is divided into two pipelines, and the other pipeline is connected to the air inlet of the second heat exchange coil 8. A first electric air volume regulating valve 14 is arranged on this pipeline, and the air outlet of the second heat exchange coil 8 is communicated with the air-conditioned room.

[0055] The second pipeline is respectively communicated with the medium inlet of the second heat exchange coil 8, the medium outlet of the second heat exchange coil 8 is communicated with the medium inlet of the outdoor air-cooled condenser 6, the medium outlet of the outdoor air-cooled condenser 6 is communicated with the medium inlet of the surface cooler 9, and an expansion valve 4 is arranged on the connecting pipeline between the two. The medium outlet of the surface cooler 9 is communicated with the medium inlet of the compressor 5.

[0056] A second one-way valve 12 is arranged on the connecting pipeline of the medium inlet of the first heat exchange coil 7, and a first one-way valve 11 is arranged on the connecting pipeline of the medium inlet of the second heat exchange coil 8;

[0057] Specifically, a second heat exchange coil 8 is provided inside the air handling duct two. The second heat exchange coil 8 is connected in series with the outdoor air-cooled condenser 6 to replace the duct electric heater in the traditional air conditioning system for directly heating the air. In winter, the first electric air volume regulating valve 14 is in the open state, and the third electric air volume regulating valve 16 is in the closed state. The opening degrees of the first and second electric air volume regulating valves 15 are adjusted so that the air volume entering the air handling duct two is the supply air volume of the room to be heated. According to the room temperature in the room to be heated, the opening degrees of the first solenoid valve 1 and the third solenoid valve 3 are controlled. An appropriate amount of high-temperature refrigerant compressed by the compressor 5 is passed through the second heat exchange coil 8 to heat the humidified air using the condensation heat. The heated air is sent to the room to be heated to meet the indoor temperature and humidity requirements. The remaining air passes through the air handling duct one, and the processed air is sent to the room to be cooled. The processing process is the same as in summer. This realizes simultaneous cooling and heating in winter.

[0058] Embodiment 5

[0059] As Figures 1 to 3 shown, this embodiment is a further optimization based on Embodiment 4. Specifically:

[0060] The air outlet of the first heat exchange coil 7 is divided into two pipelines. One pipeline is connected to the air inlets of the UPS room and the cabinet room, and the other pipeline is connected to the air outlet pipeline of the second heat exchange coil 8. The air outlet of the second heat exchange coil 8 is connected to the air inlet of the engineer station.

[0061] The return air outlets of the cabinet room and the engineer station are both connected to the fresh air inlet.

[0062] Specifically, two independent air handling ducts one and two are provided inside the air-cooled constant temperature and humidity air conditioner unit. The fresh air and the return air are mixed, processed by the air filter 13 and the humidifier 10 (only operating in winter), and then sent to the air handling ducts one and two by the supply fan 17.

Claims

1. An air conditioning system utilizing condensation heat, characterized in that: It comprises a constant temperature and humidity air conditioning unit, a fresh air inlet arranged on one side of the constant temperature and humidity air conditioning unit, an air outlet arranged on the other side of the constant temperature and humidity air conditioning unit, a compressor (5) arranged in the constant temperature and humidity air conditioning unit, and an outdoor air-cooled condenser (6) arranged outside the constant temperature and humidity air conditioning unit, wherein the constant temperature and humidity air conditioning unit is independently provided with an air treatment duct 1 and an air treatment duct 2, and the air treatment duct 1 and the air treatment duct 2 are both heat exchanged with the outdoor air-cooled condenser (6); The air conditioning refrigerant in the compressor (5) is used for heating or reheating the air treatment duct 1 and the air treatment duct 2 respectively.

2. The air conditioning system using condensation heat according to claim 1, characterized in that: It also includes a filter and a humidifier (10), which are arranged in a shell near one end of the fresh air inlet along the air flow direction, and are arranged at the front end of the air inlet of the air treatment duct one and the air treatment duct two.

3. The air conditioning system using condensation heat according to claim 2, characterized in that: The constant temperature and humidity air conditioning unit comprises a shell, an air blower (17) arranged in the shell near the fresh air inlet, and a transverse partition arranged in the shell away from the fresh air inlet, the transverse partition dividing the interior of the shell into a lower air treatment duct 1 and an upper air treatment duct 2, and the air blower (17) is connected to the air treatment duct 1 and the air treatment duct 2 respectively.

4. The air conditioning system using condensation heat according to claim 3, characterized in that: The air treatment duct 1 is provided with a first heat exchange coil (7) and a surface cooler (9); The air outlet of the air blower (17) is divided into two pipes, one of which is connected to the air inlet of the surface cooler (9), and a second electric air volume regulating valve (15) is provided on the pipe. The air outlet of the surface cooler (9) is connected to the air inlet of the first heat exchange coil (7), and the air outlet of the first heat exchange coil (7) is connected to the air-conditioned room.

5. The air conditioning system using condensation heat according to claim 4, characterized in that: The outlet of the condensing agent with residual heat of the compressor (5) is respectively connected to a first pipeline, a second pipeline and a third pipeline, and the first pipeline, the second pipeline and the third pipeline are respectively provided with a first solenoid valve (1), a second solenoid valve (2) and a third solenoid valve (3).

6. The air conditioning system using condensation heat according to claim 5, characterized in that: The first pipe and the third pipe are respectively connected to the medium inlet of the first heat exchange coil (7) and the medium inlet of the outdoor air-cooled condenser (6); the medium outlet of the first heat exchange coil (7) is connected to the medium inlet of the outdoor air-cooled condenser (6); the medium outlet of the outdoor air-cooled condenser (6) is connected to the medium inlet of the surface cooler (9); and the medium outlet of the surface cooler (9) is connected to the medium inlet of the compressor (5).

7. The air conditioning system using condensation heat according to claim 5, characterized in that: A second heat exchange coil (8) is arranged in the second air treatment duct; The air outlet of the blower (17) is divided into two pipes, wherein the other pipe is connected to the air inlet of the second heat exchange coil (8), and a first electric air volume regulating valve (14) is provided on the pipe. The air outlet of the second heat exchange coil (8) is connected to the air conditioning room.

8. The air conditioning system using condensation heat according to claim 7, characterized in that: The second pipeline is respectively connected to the medium inlet of the second heat exchange coil (8), the medium outlet of the second heat exchange coil (8) is connected to the medium inlet of the outdoor air-cooled condenser (6), the medium outlet of the outdoor air-cooled condenser (6) is connected to the medium inlet of the surface cooler (9), and the medium outlet of the surface cooler (9) is connected to the medium inlet of the compressor (5).

9. The air conditioning system using condensation heat according to claim 8, characterized in that: The air outlet of the first heat exchange coil (7) is divided into two pipes, one pipe is connected to the air inlet between the UPS and the air inlet between the cabinets, and the other pipe is connected to the air outlet pipe of the second heat exchange coil (8), and the air outlet of the second heat exchange coil (8) is connected to the air inlet of the engineer station.

10. An air conditioning system using condensation heat according to claim 9, characterized in that: The return air outlet of the cabinet room and the return air outlet of the engineer station are both connected to the fresh air inlet.

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