CN220417590U - Self-split anti-freezing heat exchanger - Google Patents
Self-split anti-freezing heat exchanger Download PDFInfo
- Publication number
- CN220417590U CN220417590U CN202321747110.5U CN202321747110U CN220417590U CN 220417590 U CN220417590 U CN 220417590U CN 202321747110 U CN202321747110 U CN 202321747110U CN 220417590 U CN220417590 U CN 220417590U
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- heat exchanger
- collecting pipe
- water inlet
- water
- regulating valve
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- 238000007710 freezing Methods 0.000 title abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 75
- 230000001105 regulatory effect Effects 0.000 claims abstract description 21
- 230000002528 anti-freeze Effects 0.000 claims 3
- 208000001034 Frostbite Diseases 0.000 claims 1
- 238000004378 air conditioning Methods 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 description 12
- 238000001816 cooling Methods 0.000 description 6
- 238000005057 refrigeration Methods 0.000 description 6
- 230000008014 freezing Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model relates to the technical field of air conditioner heat exchangers, in particular to a self-flow-dividing anti-freezing heat exchanger which comprises a heat exchanger I and a heat exchanger II, wherein a water inlet collecting pipe of the heat exchanger I and a water inlet collecting pipe of the heat exchanger II are connected with an external water inlet pipe, an electric regulating valve is arranged between the heat exchanger II and the external water inlet pipe, the electric regulating valve is opened in summer working conditions, and the electric regulating valve is closed in winter working conditions; the water outlet branch pipes of the heat exchanger I and the heat exchanger II are connected with a water outlet collecting pipe, a drain valve is arranged on the water inlet collecting pipe, and an exhaust valve is arranged on the water outlet collecting pipe. The cold and hot water shared heat exchanger is divided into two different heat exchangers I and II, and when two independently operated heat exchangers are operated in winter, the hot water flow is not required to be regulated, the risk that the heat exchanger is frozen out due to the fact that the water flow is reduced due to the fact that the water flow is regulated is avoided, too many heat exchanger surfaces are avoided, the capacity of the heat exchanger is too high, the fresh air temperature is raised too high, and the air conditioning unit cannot be cooled.
Description
Technical Field
The utility model relates to the technical field of air conditioner heat exchangers, in particular to a self-flow-dividing anti-freezing heat exchanger.
Background
The fresh air conditioning unit is a fresh air conditioning unit, the use function of the fresh air conditioning unit is generally refrigeration cooling in summer and heating in winter, and in a northern cold area, as the fresh air conditioning unit runs in fresh air, low-temperature fresh air can freeze water in the heat exchanger at any time, so that the heat exchanger is frosted. Therefore, the heat exchanger of the fresh air handling unit is particularly important to prevent freezing.
To the anti-icing of heat exchanger, many air conditioner manufacturers set up electric preheating device in fresh air mouth department at present, preheat the fresh air to above zero degree, and heat exchanger and fresh air heat exchange more than zero degree just can not frost crack. If the electric preheating device is not arranged, when the heat exchanger (commonly called a two-pipe refrigerating hot water coil) is shared for refrigerating and heating, the hot water in the heat exchanger needs to keep enough flow velocity when the heat exchanger runs in winter, and is not cooled and frozen by cold fresh air. When the winter unit is not used, the heat exchanger in the fresh air machine keeps hot water circulating flow. For the heat exchanger shared by refrigeration and heating, the cooling capacity of fresh air in summer for cooling and dehumidifying is usually far greater than the heating capacity in winter, and the heat exchanger is mainly selected from the cooling capacity in summer, so that the heat exchange area required by the refrigeration in summer of the heat exchanger is often greater than the heat exchange area required by the heating in winter. Therefore, in winter, the heat exchanger shared by refrigeration and heating is not frozen out, the flow of hot water is enough, the heating capacity of the heat exchanger is overlarge, and the indoor temperature is possibly higher.
The two anti-freezing methods can effectively reduce the risk of freezing damage of the fresh air ventilator, but have certain drawbacks. Such as: the new wind power is preheated to bring high energy consumption, the electricity consumption is large, and the cost is increased; the heat exchanger has large hot water flow, large heat and excessive heating, and can bring about higher indoor temperature.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a self-flow-dividing anti-freezing heat exchanger which has low operation cost and can avoid overheating.
The technical scheme adopted for solving the technical problems is as follows:
the self-shunting antifreezing heat exchanger comprises a heat exchanger I and a heat exchanger II, wherein a water inlet collecting pipe of the heat exchanger I and a water inlet collecting pipe of the heat exchanger II are connected with an external water inlet pipe, an electric regulating valve is arranged between the heat exchanger II and the external water inlet pipe, the electric regulating valve is opened in summer working conditions, and the electric regulating valve is closed in winter working conditions; the water outlet branch pipes of the heat exchanger I and the heat exchanger II are connected with a water outlet collecting pipe, a drain valve is arranged on the water inlet collecting pipe, and an exhaust valve is arranged on the water outlet collecting pipe.
Further, the heat exchanger I and the heat exchanger II are assembled in one heat exchanger frame.
Further, the heat exchanger I and the heat exchanger II are arranged in the heat exchanger frame in a front-back side-by-side manner.
Furthermore, the water outlet branch pipe of the heat exchanger II is connected with a water outlet collecting pipe through a secondary water outlet collecting pipe, and an electric regulating valve is arranged on the secondary water outlet collecting pipe.
The beneficial effects of the utility model are as follows: the cold and hot water shared heat exchanger is divided into two different heat exchangers I and II, and when two independently operated heat exchangers are operated in winter, the hot water flow is not required to be regulated, the risk that the heat exchanger is frozen out due to the fact that the water flow is reduced due to the fact that the water flow is regulated is avoided, too many heat exchanger surfaces are avoided, the capacity of the heat exchanger is too high, the fresh air temperature is raised too high, and the air conditioning unit cannot be cooled.
Drawings
FIG. 1 is a schematic front view of the present utility model;
FIG. 2 is a right side view of the present utility model;
FIG. 3 is a schematic left-hand view of the present utility model;
FIG. 4 is a schematic top view of the present utility model;
fig. 5 is a schematic view of a heat exchanger ii of the present utility model with a secondary effluent header.
In the figure, a heat exchanger I1, a heat exchanger II 2, a heat exchanger frame 3, an electric regulating valve I4, a water inlet collecting pipe 5, an external water inlet pipe 6, a water outlet collecting pipe 7, a drain valve 8, an exhaust valve 9, a secondary water outlet collecting pipe 10 and an electric regulating valve II 11.
Detailed Description
For a better understanding of the utility model, embodiments of the utility model will be explained in detail below with reference to fig. 1-5, wherein the large arrows below the heat exchanger in fig. 4 and 5 indicate the direction of the air flow, i.e. the air flow enters from the side of heat exchanger i1 and exits from heat exchanger ii 2. The small arrows in fig. 4 and 5 indicate the direction of water flow within the pipe.
The utility model provides a self-contained split-flow type antifreezing heat exchanger, which comprises a heat exchanger I1 and a heat exchanger II 2, wherein the heat exchanger I1 and the heat exchanger II 2 can be assembled in a heat exchanger frame 3 to form an integrated combined heat exchanger. The water inlet and outlet pipes of the combined heat exchanger are divided into three collecting pipes, wherein two water inlet collecting pipes and one water outlet collecting pipe are respectively connected with the water inlet collecting pipes and the water outlet collecting pipes in a different-side connecting pipe. The outside inlet tube of unit divides into two routes and advances the collecting pipe that the pipe got into heat exchanger I1 and heat exchanger II 2 respectively after the unit access, wherein install electric control valve I4 on the water receiving pipe of heat exchanger II, electric control valve I4 opens cold water and gets into heat exchanger II 2 when operating mode in summer, and heat exchanger I1 and heat exchanger II 2 refrigerate the cooling simultaneously. When working condition in winter, the electric control valve I4 is closed, hot water completely enters the heat exchanger I1, and only the heat exchanger I1 heats.
The specific structure is described as follows: the water inlet collecting pipes 5 of the heat exchanger I1 and the heat exchanger II 2 are respectively connected with an external water inlet pipe 6, the water outlet branch pipes of the heat exchanger I1 and the heat exchanger II 2 are connected with a water outlet collecting pipe 7, a water discharge valve 8 is arranged on the water inlet collecting pipe 5, and an exhaust valve 9 is arranged on the water outlet collecting pipe 7. An electric regulating valve I4 is arranged between the heat exchanger II 2 and the external water inlet pipe 6, the electric regulating valve I4 is opened in summer working conditions, cold water enters the heat exchanger II 2, the heat exchanger I1 and the heat exchanger II 2 simultaneously perform refrigeration and cooling, and chilled water is collected to the water outlet collecting pipe 7 after being subjected to refrigeration exchange through the heat exchangers I1 and II 2 and then flows back to the refrigerator system. When the electric control valve I4 is closed in winter, hot water completely enters the heat exchanger I1, only the heat exchanger I1 heats, and the hot water is collected to the water outlet collecting pipe 7 after being subjected to heat exchange through the heat exchanger I1 and then flows back to the refrigerator system. When heating in winter, only the heat exchanger I1 operates, the heat exchanger I1 designs the flow rate of hot water according to the heating requirement, the frost crack risk caused by the low flow rate brought by the refrigerating requirement is completely avoided, meanwhile, the area of the heat exchanger is designed according to the heating requirement, and the excessive heating of fresh air caused by the overlarge area of the heat exchanger brought by the refrigerating requirement can not occur.
The heat exchanger I1 and the heat exchanger II 2 are preferably assembled in one heat exchanger frame to form the integral heat exchanger. The heat exchanger I1 and the heat exchanger II 2 are arranged side by side in the heat exchanger frame 3.
In order to prevent that only the heat exchanger I1 works, water flows into the heat exchanger II, the heat exchanger II is easy to burst after icing in winter, the water outlet branch pipe of the heat exchanger II 2 is connected with the water outlet collecting pipe 7 through a secondary water outlet collecting pipe 10, an electric regulating valve II 11 is arranged on the secondary water outlet collecting pipe 10, and the electric regulating valve I4 and the electric regulating valve II 11 are closed simultaneously under winter working conditions.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. From reposition of redundant personnel formula heat exchanger that prevents frostbite, its characterized in that: the heat exchanger comprises a heat exchanger I and a heat exchanger II, wherein a water inlet collecting pipe of the heat exchanger I and a water inlet collecting pipe of the heat exchanger II are connected with an external water inlet pipe, an electric regulating valve is arranged between the heat exchanger II and the external water inlet pipe, the electric regulating valve is opened in summer working conditions, and the electric regulating valve is closed in winter working conditions; the water outlet branch pipes of the heat exchanger I and the heat exchanger II are connected with a water outlet collecting pipe, a drain valve is arranged on the water inlet collecting pipe, and an exhaust valve is arranged on the water outlet collecting pipe.
2. The self-diverting antifreeze heat exchanger of claim 1, wherein said heat exchanger i and heat exchanger ii are assembled in a heat exchanger frame.
3. The self-diverting antifreeze heat exchanger of claim 2, wherein said heat exchanger i and heat exchanger ii are disposed side-by-side in said heat exchanger frame.
4. A self-diverting antifreeze heat exchanger according to any one of claims 1 to 3, wherein the outlet branch of the heat exchanger ii is connected to the outlet header via a secondary outlet header, and wherein an electrically operated control valve is provided on the secondary outlet header.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321747110.5U CN220417590U (en) | 2023-07-05 | 2023-07-05 | Self-split anti-freezing heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321747110.5U CN220417590U (en) | 2023-07-05 | 2023-07-05 | Self-split anti-freezing heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220417590U true CN220417590U (en) | 2024-01-30 |
Family
ID=89642812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321747110.5U Active CN220417590U (en) | 2023-07-05 | 2023-07-05 | Self-split anti-freezing heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220417590U (en) |
-
2023
- 2023-07-05 CN CN202321747110.5U patent/CN220417590U/en active Active
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