CN220524330U - Exhaust energy recovery system of central air conditioning system - Google Patents
Exhaust energy recovery system of central air conditioning system Download PDFInfo
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- CN220524330U CN220524330U CN202321141585.XU CN202321141585U CN220524330U CN 220524330 U CN220524330 U CN 220524330U CN 202321141585 U CN202321141585 U CN 202321141585U CN 220524330 U CN220524330 U CN 220524330U
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 28
- 238000011084 recovery Methods 0.000 title claims abstract description 17
- 239000003507 refrigerant Substances 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Central Air Conditioning (AREA)
Abstract
The utility model discloses an exhaust energy recovery system of a central air conditioning system, which comprises a heat exchanger, a blower, an air return machine and a cooler, wherein the blower and the air return machine are respectively arranged at an indoor air supply opening and an indoor air exhaust opening, the air return machine is connected with the heat exchanger through an air exhaust pipe, an evaporator is arranged at one end of the air exhaust pipe, which is close to the air exhaust opening, of the air exhaust pipe, the air return pipe is connected with the air exhaust pipe, the blower is connected with the air return pipe through an air inlet pipe, the heat exchanger is connected with the air inlet pipe through a new air pipe, the air inlet pipe is sequentially provided with a condenser and a cooler from the position close to the air supply opening to the position far away from the air supply opening, a refrigerant loop is arranged between the evaporator and the condenser, and a regulating valve is arranged on the refrigerant loop. The energy recovery device is arranged in the central air conditioning system, and the energy in the exhaust air is utilized to treat the fresh air, so that the energy required by treating the fresh air can be reduced, the load of an air conditioning unit is reduced, and the economical efficiency of the central air conditioning system is improved.
Description
Technical Field
The utility model relates to the technical field of central air conditioning systems, in particular to a system for recovering exhaust energy of a central air conditioning system.
Background
In the air conditioning load of the building, the proportion of the fresh air load is relatively large, and the fresh air load generally accounts for 20% -30% of the total air conditioning load. In order to ensure the sanitation and the cleanness of the indoor air environment, part of indoor air is discharged when the central air conditioning system operates, part of energy is taken away in the process, and meanwhile, energy is needed to be input to treat fresh air. The existing central air conditioning system directly discharges return air outdoors when exhausting air, cannot utilize the energy in the exhaust air, so that the energy is wasted, additional energy is needed for processing fresh air, and the energy consumption of the central air conditioner is improved.
Disclosure of Invention
The utility model provides a system for recovering exhaust energy of a central air conditioning system in order to solve the problems.
The utility model adopts the following technical scheme:
the utility model provides a central air conditioning system exhaust energy recovery system, includes heat exchanger, forced draught blower, return air machine and cooler, forced draught blower and return air machine locate indoor supply-air outlet and air exit respectively, the return air machine passes through the exhaust pipe and is connected with the heat exchanger, and the one end that the exhaust pipe is close to the air exit is equipped with the evaporimeter, is located being connected with the return air pipe on the exhaust pipe of heat exchanger and evaporimeter, the forced draught blower passes through the air-supply line and is connected with the return air pipe, the heat exchanger passes through the fresh air pipe and is connected with the air-supply line, the air-supply line is equipped with condenser and cooler in proper order from being close to the supply-air outlet to keeping away from the supply-air outlet, be equipped with the refrigerant return circuit between evaporimeter and the condenser, be equipped with the governing valve on the refrigerant return circuit.
As a preferable technical scheme of the utility model, the heat exchanger is a plate-fin heat exchanger, a fresh air inlet, a fresh air outlet, an exhaust inlet and an exhaust outlet are arranged on the heat exchanger, the fresh air outlet is connected with a fresh air outlet pipe, and the exhaust inlet is connected with an exhaust pipe.
As a preferable embodiment of the present utility model, the cooler is a surface cooler.
The beneficial effects of the utility model are as follows:
the energy recovery device is arranged in the central air conditioning system, and the energy in the exhaust air is utilized to treat the fresh air, so that the energy required by treating the fresh air can be reduced, the load of an air conditioning unit is reduced, and the economical efficiency of the central air conditioning system is improved.
Drawings
FIG. 1 is a schematic diagram of a central air conditioning system exhaust energy recovery system;
FIG. 2 is a diagram showing the state of the air flow in the exhaust energy recovery system of the central air conditioning system.
The symbols in the drawings illustrate:
1: heat exchanger, 2: blower, 3: return fan, 4: cooler, 5: evaporator, 6: condenser, 7: regulating valve, 100: indoor.
Detailed Description
The utility model will now be described in further detail with reference to the accompanying drawings.
In the embodiments, it should be understood that the orientation or positional relationship indicated by the terms "middle," "upper," "lower," "top," "bottom," "right," "left," "above," "below," "back," "front," "middle," "outside," "inside," etc. are based on the orientation or positional relationship shown in the drawings, merely for convenience of description of the present embodiments, and are not intended to indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present embodiments.
As shown in fig. 1 and 2, a central air conditioning system exhaust energy recovery system comprises a heat exchanger 1, a blower 2, a return air machine 3 and a cooler 4, wherein the blower 2 and the return air machine 3 are respectively arranged at an indoor air supply opening and an indoor air exhaust opening, the return air machine 3 is connected with the heat exchanger 1 through an air exhaust pipe, one end, close to the air exhaust opening, of the air exhaust pipe is provided with an evaporator 5, an air return pipe is connected to the air exhaust pipe positioned on the heat exchanger 1 and the evaporator 5, the blower 2 is connected with the air return pipe through an air inlet pipe, the heat exchanger 1 is connected with the air inlet pipe through a new air pipe, the air inlet pipe is sequentially provided with a condenser 6 and a cooler 4 from being close to the air supply opening to being far away from the air supply opening, the cooler 4 is a surface cooler, a refrigerant loop is arranged between the evaporator 5 and the condenser 6, and the refrigerant loop is provided with a regulating valve 7.
The heat exchanger 1 is used for exchanging heat between fresh air and exhausted air, the blower 2 is used for conveying the fresh air (including partial return air) to the indoor 100, the return air machine 3 is used for exhausting partial air of the indoor 100 (one part is exhausted air which exchanges heat with the fresh air, and the other part is return air), and the cooler 4 is used for processing fresh air flow (namely mixed air flow of the fresh air and the return air) to be conveyed to the indoor 100.
The heat exchanger 1 is a plate-fin heat exchanger, a fresh air inlet, a fresh air outlet, an exhaust inlet and an exhaust outlet are arranged on the heat exchanger 1, the fresh air outlet is connected with a fresh air outlet pipe, and the exhaust inlet is connected with an exhaust pipe. The plate-fin heat exchanger has high heat exchange coefficient and compact structure, is used for recovering the sensible heat and the latent heat in the rest heat of the central air conditioning system, has the recovery rate of about 70 percent and has obvious recovery benefit. In the plate-fin heat exchanger, fresh air enters the plate-fin heat exchanger from a fresh air inlet and finally comes out from a fresh air outlet; the exhaust air enters the plate-fin heat exchanger from the exhaust air inlet through the exhaust air pipe, and finally is exhausted from the exhaust air outlet, and two airflows cross-flow through the heat exchanger in the plate-fin heat exchanger to exchange heat, and fresh air absorbs part of the energy of the exhaust air (namely energy recovery is performed).
The utility model relates to an energy recovery system principle: taking a primary return air central air conditioning system as an example, in the energy recovery system, an evaporator 5 part and a condenser 6 part are respectively used for cooling return air and heating air supply, the return air in an indoor air state d is cooled to a state f through the evaporator 5 part, the return air in the state f is used as exhaust air, the exhaust air in the part exchanges energy with fresh air in a heat exchanger 1 to treat the fresh air, most of the return air is mixed with the fresh air, the air in a state a is cooled and dehumidified through a cooler 4 after being mixed, the air in a saturated state b is obtained, and the air in the saturated state b is heated to a satisfactory air supply state c through the condenser 6 part and then is fed into a room. Compared with the traditional primary return air central air conditioning system, the air conditioning refrigerating capacity of the embodiment is composed of the exchange cold capacity of the evaporator and the cold capacity of the cooler, so that the air conditioning energy consumption is effectively saved.
Finally, it should be noted that: these embodiments are merely for illustrating the present utility model and do not limit the scope of the present utility model. Further, various other changes and modifications will be apparent to those skilled in the art from the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (3)
1. A central air conditioning system exhaust energy recovery system is characterized in that: including heat exchanger (1), forced draught blower (2), return air machine (3) and cooler (4), forced draught blower (2) and return air machine (3) locate supply-air outlet and air exit in indoor (100) respectively, return air machine (3) are connected with heat exchanger (1) through the exhaust pipe, and the one end that the exhaust pipe is close to the air exit is equipped with evaporimeter (5), are located to be connected with the return air pipe on the exhaust pipe of heat exchanger (1) and evaporimeter (5), forced draught blower (2) are connected with the return air pipe through the air-supply line, heat exchanger (1) are connected with the air-supply line through the fresh air pipe, the air-supply line is equipped with condenser (6) and cooler (4) in proper order from being close to the supply-air outlet to keeping away from the supply-air outlet, be equipped with the refrigerant return circuit between evaporimeter (5) and the condenser (6), be equipped with governing valve (7) on the refrigerant return circuit.
2. A central air conditioning system exhaust energy recovery system as claimed in claim 1, wherein: the heat exchanger (1) is a plate-fin heat exchanger, a fresh air inlet, a fresh air outlet, an exhaust inlet and an exhaust outlet are arranged on the heat exchanger (1), the fresh air outlet is connected with a fresh air outlet pipe, and the exhaust inlet is connected with an exhaust pipe.
3. A central air conditioning system exhaust energy recovery system as claimed in claim 1, wherein: the cooler (4) is a surface cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321141585.XU CN220524330U (en) | 2023-05-12 | 2023-05-12 | Exhaust energy recovery system of central air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321141585.XU CN220524330U (en) | 2023-05-12 | 2023-05-12 | Exhaust energy recovery system of central air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220524330U true CN220524330U (en) | 2024-02-23 |
Family
ID=89926016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321141585.XU Active CN220524330U (en) | 2023-05-12 | 2023-05-12 | Exhaust energy recovery system of central air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220524330U (en) |
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2023
- 2023-05-12 CN CN202321141585.XU patent/CN220524330U/en active Active
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