CN110617630A - Constant temperature difference control system and method for heat pump water inlet and outlet of swimming pool - Google Patents
Constant temperature difference control system and method for heat pump water inlet and outlet of swimming pool Download PDFInfo
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- CN110617630A CN110617630A CN201910893673.7A CN201910893673A CN110617630A CN 110617630 A CN110617630 A CN 110617630A CN 201910893673 A CN201910893673 A CN 201910893673A CN 110617630 A CN110617630 A CN 110617630A
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- Prior art keywords
- water
- heat exchanger
- way valve
- temperature difference
- swimming pool
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/086—Heat exchange elements made from metals or metal alloys from titanium or titanium alloys
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a constant temperature difference control system for heat pump water inlet and outlet of a swimming pool, which comprises a water inlet pipe, wherein the water inlet pipe is connected with a water pump, a water pump pipeline is connected with a three-way valve, and the three-way valve is sequentially connected with a second heat exchanger, a compressor and a first heat exchanger through pipelines; one path of the water outlet pipe is connected with the three-way valve, the other path of the water outlet pipe is connected with the second heat exchanger through a pipeline, and the second heat exchanger is also sequentially connected with the throttle valve and the first heat exchanger through pipelines; the PLC controller, the PLC controller connect respectively and be located the water sensor of intaking of second heat exchanger inlet tube department installation and the play water sensor of outlet pipe department installation, the PLC controller still is connected with the three-way valve. This scheme has been solved current swimming pool heat pump heating process, because swimming pool heat pump heating capacity receives ambient temperature to influence great, leads to the business turn over water difference in temperature too big, and then leads to the heat loss to strengthen and the too high problem of swimming pool local temperature.
Description
Technical Field
The invention relates to the technical field of swimming pool temperature control system design, in particular to a constant temperature difference control system for heat pump water inlet and outlet of a swimming pool and a control method thereof.
Background
In the prior art, a heat pump of a swimming pool generally directly adopts a return water temperature control scheme, namely a target return water temperature is set for the heat pump of the swimming pool, and when the return water temperature is higher than a set temperature, the heat pump system stops heating; when the temperature is lower than the return water temperature and the return difference temperature is reduced, the heat pump system starts heating again. The above mode has certain disadvantages that the swimming pool water has local high temperature and poor experience, because the temperature of the outlet water is higher and the difference between the actual temperature of the swimming pool water is larger, the heat is concentrated; the heat loss is large, because the higher the water temperature is, the larger the difference between the water temperature and the ambient temperature is, the faster the heat loss is; the heat pump unit works in a large temperature difference for a long time, and the service life of the heat pump unit is influenced because the capacity output of the main machine has no temperature difference control means.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a constant temperature difference control system and a control method for heat pump inlet and outlet water of a swimming pool.
In order to achieve the purpose, the invention adopts the technical scheme that: a constant temperature difference control system for heat pump water inlet and outlet of a swimming pool comprises a water inlet pipe, wherein the water inlet pipe is connected with a water pump, a water pump pipeline is connected with a three-way valve, and the three-way valve is sequentially connected with a second heat exchanger, a compressor and a first heat exchanger through pipelines; one path of the water outlet pipe is connected with the three-way valve, the other path of the water outlet pipe is connected with the second heat exchanger through a pipeline, and the second heat exchanger is also sequentially connected with the throttle valve and the first heat exchanger through pipelines; the PLC controller, the PLC controller connect respectively and be located the water sensor of intaking of second heat exchanger inlet tube department installation and the play water sensor of outlet pipe department installation, the PLC controller still is connected with the three-way valve.
Further, the three-way valve is an adjustable flow three-way reversing valve.
Further, the first heat exchanger is a fin heat exchanger, a fan is arranged on the first heat exchanger, and the second heat exchanger is a titanium tube heat exchanger.
When the PLC detects that the temperature fed back by the water inlet sensor is lower than a set temperature T1, the compressor is started, the refrigerant starts to circulate, and after heat exchange between the refrigerant and water in the second heat exchanger is completed, the water outlet pipe supplies hot water to the swimming pool to raise the water temperature.
When outdoor ambient temperature is less than the room temperature, the ability of cold and hot of first heat exchanger reduces, and the output capacity of compressor reduces, and the temperature difference that intake sensor and play water sensor detected diminishes, and when the PLC controller detected to be less than and set for the difference in temperature T2, the PLC controller signals to the three-way valve, the inside ball valve turned angle of three-way valve makes the flow grow of outlet pipe and the flow that gets into the second heat exchanger diminishes, reaches the purpose that increases the difference in temperature to T2.
When outdoor ambient temperature is higher than the room temperature, the cold and hot ability of first heat exchanger improves, and the output capacity of compressor improves, and the temperature difference grow that intake sensor and play water sensor detected, when the PLC controller detected to be greater than and set for the difference in temperature T2, the PLC controller signals to the three-way valve, the inside ball valve turned angle of three-way valve makes the flow of outlet pipe diminish and gets into the flow grow of second heat exchanger, reaches the purpose that reduces the difference in temperature to T2.
Compared with the prior art, the invention has the beneficial effects that: the invention improves the stability of the unit by controlling the constant temperature difference of the main machine, assists the three-way valve to adjust the water inlet flow and the water outlet flow, and solves the problems of excessive heat loss and excessive local temperature of the swimming pool caused by excessive temperature difference of inlet and outlet water due to the fact that the heating capacity of the swimming pool heat pump is greatly influenced by the ambient temperature in the heating process of the existing swimming pool heat pump.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
The labels in the figures are: 1. a fan; 2. a throttle valve; 3. a first heat exchanger; 4. a compressor; 5. a second heat exchanger; 6. a water outlet sensor; 7. a water intake sensor; 8, a PLC controller; 9. a three-way valve; 10. a water pump; 11. a swimming pool.
Detailed Description
The following detailed description is provided in conjunction with the embodiments and with reference to the accompanying drawings in order to provide a further explanation of the technical features and advantages of the present invention.
As shown in fig. 1, the constant temperature difference control system for heat pump water inlet and outlet of a swimming pool of the present invention comprises a water inlet pipe, wherein the water inlet pipe is connected with a water pump 10, a pipeline of the water pump is connected with a three-way valve 9, and the three-way valve is sequentially connected with a second heat exchanger 5, a compressor 4 and a first heat exchanger 3 through pipelines; one path of the water outlet pipe is connected with the three-way valve, the other path of the water outlet pipe is connected with the second heat exchanger through a pipeline, and the second heat exchanger is also sequentially connected with the throttle valve 2 and the first heat exchanger through pipelines; PLC controller 8, PLC controller connect respectively and be located the sensor 7 of intaking of second heat exchanger inlet tube department installation and the play water sensor 6 of outlet pipe department installation, PLC controller still is connected with the three-way valve.
Furthermore, the three-way valve is an adjustable flow three-way reversing valve and is a standard universal component. The first heat exchanger is a fin heat exchanger, the fan 1 is arranged on the first heat exchanger, and the second heat exchanger is a titanium tube heat exchanger.
When the PLC detects that the temperature fed back by the water inlet sensor is lower than a set temperature T1, the compressor is started, the refrigerant starts to circulate, and after heat exchange between the refrigerant and water in the second heat exchanger is completed, the water outlet pipe supplies hot water to the swimming pool to raise the water temperature.
When outdoor ambient temperature is less than the room temperature, the cold and hot ability of first heat exchanger reduces, the output capacity of compressor reduces, the temperature difference that intake sensor and play water sensor detected diminishes, when the PLC controller detected to be less than and set for difference in temperature T2, PLC controller signals to three-way valve, make the inside ball valve turned angle of three-way valve, ascending opening grow, the opening left diminishes, the flow grow of outlet pipe and the flow that gets into the second heat exchanger diminishes, reach the purpose that increases the difference in temperature to T2.
When outdoor ambient temperature is higher than the room temperature, the cold and hot ability of first heat exchanger improves, the output capacity of compressor improves, the temperature difference grow that intake sensor and play water sensor detected, when the PLC controller detected to be greater than and set for the difference in temperature T2, the PLC controller signals to the three-way valve, make the inside ball valve turned angle of three-way valve, ascending opening diminishes, opening grow to the left, the flow of outlet pipe diminishes and gets into the flow grow of second heat exchanger, reach the purpose that reduces the difference in temperature to T2.
In the technical scheme, the three-way valve is used for shunting control in the prior art and is combined with temperature detection, so that the constant temperature difference control of the heat pump is realized. Specifically, through the inflow flow of control heat exchanger, the difference in temperature of indirect control business turn over water finally realizes reducing calorific loss, provides unit job stabilization nature purpose, in addition, owing to do not have high temperature water direct discharge swimming pool 11, can reduce the phenomenon that swimming pool intake department hot water is concentrated, improves the travelling comfort.
In the technical scheme, the rotation angles of the ball valves in the three-way valves are different, on one hand, the water inlet and outlet temperature difference value of the heat exchanger is within a set parameter range, the heat loss of the heat pump unit is reduced, on the other hand, the flow of the water outlet pipeline connected with the three-way valves is adjusted, the water temperature of the swimming pool in which the water outlet pipe connected with the heat exchanger is discharged can be reduced, and the situation that the local temperature of the water at the water inlet of the swimming pool is too high can be avoided after the water of the two water outlet pipes. The components of the heat pump unit, the three-way valve, the sensor, the water pump, the PLC and the built-in software program thereof are all the prior art or materials, and the technical personnel can directly purchase or order from the market according to the required product model and specification.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
The present invention is described in detail and completely by the technical solutions in the above embodiments, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (6)
1. A constant temperature difference control system for heat pump water inlet and outlet of a swimming pool is characterized by comprising a water inlet pipe, wherein the water inlet pipe is connected with a water pump, a water pump pipeline is connected with a three-way valve, and the three-way valve is sequentially connected with a second heat exchanger, a compressor and a first heat exchanger through pipelines; one path of the water outlet pipe is connected with the three-way valve, the other path of the water outlet pipe is connected with the second heat exchanger through a pipeline, and the second heat exchanger is also sequentially connected with the throttle valve and the first heat exchanger through pipelines; the PLC controller, the PLC controller connect respectively and be located the water sensor of intaking of second heat exchanger inlet tube department installation and the play water sensor of outlet pipe department installation, the PLC controller still is connected with the three-way valve.
2. A thermostatic difference control system for swimming pool heat pump inlet and outlet water as claimed in claim 1, wherein the three-way valve is an adjustable flow three-way reversing valve.
3. The system of claim 2, wherein the first heat exchanger is a finned heat exchanger, the first heat exchanger is provided with a fan, and the second heat exchanger is a titanium tube heat exchanger.
4. A control method of a constant temperature difference control system for heat pump inlet and outlet water of a swimming pool according to any one of claims 1 to 3, characterized in that when the PLC controller detects that the temperature fed back by the inlet water sensor is lower than the set temperature T1, the compressor is turned on, the refrigerant starts to circulate, and after the heat exchange between the refrigerant and water in the second heat exchanger is completed, the outlet pipe supplies hot water to the swimming pool to raise the temperature of the water.
5. The control method of the constant temperature difference control system for the swimming pool heat pump water inlet and outlet according to claim 4, characterized in that when the outdoor environment temperature is lower than the room temperature, the cold and heat capacity of the first heat exchanger is reduced, the output capacity of the compressor is reduced, the water temperature difference detected by the water inlet sensor and the water outlet sensor is reduced, when the PLC detects that the temperature difference is less than the set temperature difference T2, the PLC sends a signal to the three-way valve, and the rotation angle of the ball valve in the three-way valve increases the flow of the water outlet pipe and reduces the flow entering the second heat exchanger, thereby achieving the purpose of increasing the temperature difference to T2.
6. The control method of the constant temperature difference control system for the heat pump water inlet and outlet of the swimming pool according to claim 4, wherein when the outdoor environment temperature is higher than the room temperature, the cold and heat capacity of the first heat exchanger is improved, the output capacity of the compressor is improved, the water temperature difference detected by the water inlet sensor and the water outlet sensor is increased, when the PLC detects that the temperature difference is greater than the set temperature difference T2, the PLC sends a signal to the three-way valve, and the ball valve inside the three-way valve rotates by an angle, so that the flow of the water outlet pipe is decreased, the flow entering the second heat exchanger is increased, and the purpose of reducing the temperature difference to T2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910893673.7A CN110617630A (en) | 2019-09-20 | 2019-09-20 | Constant temperature difference control system and method for heat pump water inlet and outlet of swimming pool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910893673.7A CN110617630A (en) | 2019-09-20 | 2019-09-20 | Constant temperature difference control system and method for heat pump water inlet and outlet of swimming pool |
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| Publication Number | Publication Date |
|---|---|
| CN110617630A true CN110617630A (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910893673.7A Pending CN110617630A (en) | 2019-09-20 | 2019-09-20 | Constant temperature difference control system and method for heat pump water inlet and outlet of swimming pool |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111392903A (en) * | 2020-03-25 | 2020-07-10 | 中国建筑设计研究院有限公司 | Distributed swimming pool water treatment system |
-
2019
- 2019-09-20 CN CN201910893673.7A patent/CN110617630A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111392903A (en) * | 2020-03-25 | 2020-07-10 | 中国建筑设计研究院有限公司 | Distributed swimming pool water treatment system |
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