Multifunctional heat exchange unit

Abstract

The utility model discloses a multifunctional heat exchange unit, including primary network water supply system, primary network backwater system, secondary network water supply system, secondary network backwater system, with the water supplementing system and plate heat exchanger of secondary network backwater system intercommunication, be equipped with circulating pump in the secondary network backwater system, be equipped with water supplementing pump in the water supplementing system, be equipped with electric heater on primary network water supply system, solar panel is connected to electric heater, be equipped with digital locking balance valve on secondary network water supply system, primary network water supply system with the secondary network backwater system all are equipped with Y type filter and permanent -magnetic descaler. When the heat source temperature does not reach the effect, can use solar panel electric heater to heat temperature and promote to reach the specified value before entering the heat exchanger. Can accurately adjust pressure drop and flow in the water supply, can effectively protect important components service life reduction harmful ingredient in water, differential pressure steady reduces noise.

Description

Technical Field

[0001] This utility model relates to the field of heating technology, specifically a multi-functional heat exchange unit. Background Technology

[0002] With the rapid progress of urbanization and the continuous improvement of people's living standards, urban water consumption is increasing, which puts forward higher requirements for heating and water supply. For example, air conditioning, heating, bathing, domestic water, and winter water supply for swimming pools have become an indispensable part of urban construction. The increasingly complex water requirements have placed higher demands on heat exchanger unit manufacturers. In order to enable the unit to work efficiently and multifunctionally, improvements have been made to the original equipment, which has greatly improved the use of the equipment. It has advantages such as high efficiency, energy saving, convenience, and system protection, and can be widely used in various heat exchange sites.

[0003] Existing heating systems have the following drawbacks: First, the primary heat source provided by the heating company sometimes fails to reach the specified temperature, directly affecting the water supply effect after secondary heat exchange. Second, the secondary water supply sometimes suffers from unstable pressure drop and flow rate, resulting in unsatisfactory heat exchange effects. Third, the secondary return water unit system generates calcium and magnesium ions (i.e., water scale), which easily leads to scaling, large pressure differential changes, high noise and resistance, hydraulic imbalance, and the generation of gas in the pipelines over time. This can cause severe cavitation on the internal components of the circulating pump, and water hammer at the pump outlet can shorten its service life. These factors contribute to poor heating performance and equipment aging damage for users. Utility Model Content

[0004] The purpose of this utility model is to solve the above problems and provide a multi-functional heat exchanger unit that enables the unit system to provide continuous, stable and efficient heat supply, ensures a stable water flow, maintains pressure balance without loss of pressure, reduces corrosion and aging caused by harmful substances in the water, and greatly reduces the accumulation and blockage of impurities in the equipment.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A multifunctional heat exchange unit includes a primary network water supply system, a primary network return water system, a secondary network water supply system, a secondary network return water system, a makeup water system connected to the secondary network return water system, and a plate heat exchanger. The secondary network return water system is equipped with a circulating pump, the makeup water system is equipped with a makeup water pump, the primary network water supply system is equipped with an electric heater, the electric heater is electrically connected to a solar panel, the secondary network water supply system is equipped with a digital locking balancing valve, and both the primary network water supply system and the secondary network return water system are equipped with a Y-type filter and a permanent magnet descaling device.

[0007] Furthermore, the secondary network return water system is equipped with a self-regulating differential pressure control valve.

[0008] Furthermore, the secondary network return water system is equipped with a steam-water separator.

[0009] Furthermore, a water hammer check valve is installed at the outlet of the circulating pump in the secondary network return water system.

[0010] Furthermore, the water replenishment system is equipped with a water softener and a softened water tank.

[0011] Furthermore, the water replenishment system is equipped with a pressure tank.

[0012] Furthermore, it also includes control cabinets.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model includes an electric heater installed in the primary water supply system. The electric heater is electrically connected to a solar panel, and a solar electric heating device is added to the primary water supply system of the unit. The solar panel can continuously absorb sunlight and convert it into electrical energy for storage. When the remote temperature instrument detects that the temperature of the primary heat source is insufficient, it sends a signal to the control cabinet and then transmits a signal to start the electric heating device to raise the temperature. When the temperature reaches the set value, the electric heating device is turned off, so that the unit system can provide continuous, stable and efficient heating, save energy and protect the environment by using solar energy to assist electric heating, and monitor the heat source around the clock to maintain stable heat delivery.

[0015] 2. This utility model is equipped with a digital locking balance valve in the secondary water supply system to control the water flow and accurately regulate the pressure drop. After a one-time debugging with a special intelligent instrument, the valve is locked to control the total water volume of the system within a reasonable range, thereby overcoming the unreasonable phenomenon of "large flow and small temperature difference", ensuring a stable water flow, pressure balance without pressure loss, stable and continuous delivery of the total secondary water supply flow, and stable pressure drop in the system pipeline.

[0016] 3. This utility model incorporates Y-type filters and permanent magnet descaling devices in both the primary water supply system and the secondary water return system. The Y-type filters perform primary filtration, intercepting large particles in the water such as silt, rust, and insect eggs. The permanent magnet descaling device removes scale primarily composed of calcium and magnesium carbonates and sulfates, whose solubility decreases with increasing temperature. When these salt ions enter the magnetic field, the positive and negative ions move in opposite directions, increasing magnetic collisions. Effective collisions between ions, along with the strength of the magnetic field, ion concentration, and movement speed, hinder ion crystallization and precipitation, preventing scale formation and ensuring clean, unobstructed water flow. It also reduces corrosion and aging caused by harmful substances in the water, significantly reduces equipment blockage due to impurities, maintains stable system pressure, and greatly reduces noise pollution during system operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the present invention.

[0019] In the diagram: 1. Plate heat exchanger; 2. Circulating pump; 3. Makeup water pump; 4. Electric heater; 5. Solar panel; 6. Digital locking balance valve; 7. Y-type filter; 8. Permanent magnet descaling device; 9. Self-regulating differential pressure control valve; 10. Steam-water separator; 11. Water hammer check valve; 12. Water softener; 13. Softened water tank; 14. Pressure tank; 15. Control cabinet. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0021] A plate heat exchanger consists of a set of corrugated metal plates stacked together, with narrow channels formed between the plates for fluid to pass through.

[0022] A digital locking balancing valve is a regulating valve used for precise control of fluid flow, widely applied in heating, air conditioning, and industrial process control. It regulates flow by altering the clearance (opening degree) between the valve core and seat, thus changing the flow resistance across the valve. Its working principle is based on Bernoulli's equation and continuity equation in fluid mechanics. When the valve opening changes, the resistance to fluid flow changes, creating a pressure difference across the valve. This pressure difference is then used to control the fluid flow rate.

[0023] A water hammer check valve is a special valve used to prevent water hammer and protect piping systems from damage. The core function of a water hammer check valve is to prevent backflow of the medium while reducing or eliminating water hammer. Water hammer typically occurs when fluid suddenly stops or changes direction. Due to fluid inertia and pressure fluctuations, it can cause a huge pressure shock in the piping system, potentially damaging pipes, valves, pumps, and other equipment.

[0024] A gas-liquid separator is a device used to separate gas and liquid.

[0025] A self-regulating differential pressure control valve (also known as a self-operated differential pressure control valve) is a type of valve that requires no external energy and automatically adjusts based on changes in the pressure of the medium itself. It is widely used in hydraulic systems such as heating, air conditioning, and refrigeration to maintain a constant system pressure differential, balance resistance, and eliminate hydraulic imbalances. A self-regulating differential pressure control valve mainly consists of a pressure-sensing diaphragm and a regulating valve. The diaphragm senses changes in system pressure; when the pressure difference changes, the diaphragm deforms, triggering the regulating valve to actuate. This movement of the valve core changes the valve opening, thereby regulating the system flow and pressure to maintain a constant set pressure differential.

[0026] A permanent magnet descaling device is a water treatment equipment that uses the magnetic field generated by a permanent magnet to treat water flow, thereby achieving the effects of descaling, scale prevention, sterilization, algae removal, and corrosion prevention. The following is the working principle of a permanent magnet descaling device: Scale Prevention Principle: Bicarbonate ions (HCO3⁻) in water carry a negative charge and are repelled by the negatively charged pipes, preventing them from adsorbing onto the pipe surface. Under the action of a strong magnetic field, the stable rhombic crystal shape of calcium carbonate (CaCO3) crystals precipitated in the water changes. The amorphous crystal grains on the surface cannot connect into large polycrystalline masses, forming soft, sludge-like precipitates (aragonite or slag). These precipitates lose their ability to adsorb onto heated surfaces, suspend in the water, and eventually settle. Scale Removal Principle: Positively charged hydrogen ions are attracted by the negatively charged pipes, dissolving the existing scale and corrosion. Activated polar water molecules penetrate and wet the scale layer, exerting an adsorption and binding effect on the scale, causing the scale to gradually loosen and peel off. Corrosion prevention principle: The pipe and water form a polarization, with water being positive and the pipe negative. The negatively charged pipe forms cathodic protection, preventing electrochemical corrosion. Negatively charged oxygen is repelled by the negatively charged pipe and cannot corrode it, while positively charged hydrogen ions are attracted to the pipe and dissolve existing corrosion.

[0027] A water softening tank is a device used to store and provide softened water. It is widely used in industrial, commercial and domestic fields, mainly to improve water quality, prevent scale formation, thereby extending the service life of the equipment and improving system efficiency.

[0028] A water softener is a device that removes calcium (Ca²⁺) and magnesium (Mg²⁺) ions from water through ion exchange technology, thereby reducing water hardness and preventing scale formation.

[0029] like Figure 1As shown, a multi-functional heat exchange unit includes a primary network water supply system, a primary network return water system, a secondary network water supply system, a secondary network return water system, a makeup water system connected to the secondary network return water system, and a plate heat exchanger 1. The secondary network return water system is equipped with a circulation pump 2, and the makeup water system is equipped with a makeup water pump 3. The primary network water supply system is equipped with an electric heater 4, which is electrically connected to a solar panel 5. By adding a solar electric heating device to the primary water supply system, the solar panel can continuously absorb sunlight and convert it into electrical energy for storage. When a remote temperature instrument detects that the primary heat source temperature is insufficient, it sends a signal to the control cabinet, which then transmits a signal to activate the electric heating device to raise the temperature. When the temperature reaches the set value, the electric heating device is turned off, ensuring continuous, stable, and efficient heating of the unit system. This method is energy-saving and environmentally friendly, utilizing solar energy to assist in electric heating and monitoring the heat source around the clock to maintain heat. The secondary water supply system is equipped with a digital locking balance valve 6 to accurately regulate the pressure drop and control the water flow. After a one-time debugging using a dedicated intelligent instrument, the valve locks the valve, keeping the total water volume within a reasonable range. This overcomes the unreasonable phenomenon of "large flow rate, small temperature difference," ensuring a consistently stable water flow and pressure balance, guaranteeing a stable and continuous supply of secondary water. The system pipeline maintains a stable pressure drop. Both the primary water supply system and the secondary return water system are equipped with Y-type filters 7 and permanent magnet descaling devices 8. The Y-type filters perform primary filtration, intercepting large particles such as silt, rust, and insect eggs. The permanent magnet descaling device removes scale primarily composed of calcium and magnesium carbonates and sulfates. Their solubility decreases with increasing temperature. When these salt ions enter the magnetic field, the positive and negative ions move in opposite directions, increasing magnetic collisions. Effective collisions between ions, along with the strength of the magnetic field, ion concentration, and movement speed, hinder ion crystallization and precipitation, preventing scale formation and ensuring clean and unobstructed water flow. It reduces the corrosion and aging of equipment caused by harmful substances in the water, greatly reduces the accumulation and blockage of impurities in the equipment, keeps the system pressure stable, and greatly reduces noise pollution during system operation.

[0030] The secondary water return system is equipped with a self-regulating differential pressure control valve 9. Water entering the control valve utilizes the pressure changes of the medium itself for self-control, thereby ensuring that the pressure difference between the supply and return water systems remains essentially constant, reducing noise in the pipeline, balancing resistance, and eliminating hydraulic imbalance.

[0031] The secondary water return system is equipped with a steam-water separator 10. Water passing through the steam-water separator 10 in the secondary water return system is blocked by air bubbles and various impurities in the water, protecting the water pump and other components from severe corrosion. Steam-water separation effectively prevents air bubbles from forming in the water, thus preventing cavitation and causing significant corrosion damage to the pipes and pump interior. This ensures efficient system operation, extends service life, and reduces maintenance costs.

[0032] The secondary network return water system is equipped with a water hammer check valve 11 at the outlet of the circulating pump 2. When the system is powered off or the circulating pump fails, the check valve uses an internal inclined plate structure to delay closing and allow local backflow water to flow into the system, which greatly reduces the water pressure impact of backflow when the pump stops and eliminates the generation of water hammer.

[0033] The water replenishment system is equipped with a water softener 12 and a softening tank 13. The addition of a water softener 12 and a softening tank 13 to the water replenishment system effectively removes alkaline components from the water, facilitates water storage, and allows for timely replenishment.

[0034] The water replenishment system is equipped with a pressure tank 14. When the secondary return water pressure is missing, the water replenishment pump replenishes water to both the system and the secondary return water system at the same time. After the system pressure stabilizes, the excess water is squeezed into the bladder of the pressure regulating tank. When water leaks or the pressure drops in the system, the water in the bladder is continuously pumped into the pipeline to compensate for the pressure drop loss of the system.

[0035] It also includes control cabinet 15. The integrated process operation features digital flow balancing, self-detection differential pressure control, solar-assisted heating, steam-water separation, magnetic descaling, waterproof hammer impact protection, and constant pressure stabilization. This reduces the types of materials used, saves material costs, reduces investment, effectively reduces waste of human resources, saves energy, and contributes to national and social sustainable development. The successful development of this product and its widespread application in heating and air conditioning systems can promote industry standardization, improve manufacturing efficiency, and ensure the safe and efficient operation of heating systems.

[0036] In the description of this utility model, it should be noted that the terms "left", "right", "up", "down", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A multifunctional heat exchange unit, comprising a primary network water supply system, a primary network return water system, a secondary network water supply system, a secondary network return water system, a makeup water system connected to the secondary network return water system, and a plate heat exchanger (1), wherein a circulating pump (2) is provided in the secondary network return water system, and a makeup water pump (3) is provided in the makeup water system, characterized in that, The primary water supply system is equipped with an electric heater (4), which is electrically connected to a solar panel (5). The secondary water supply system is equipped with a digital locking balance valve (6). Both the primary water supply system and the secondary water return system are equipped with a Y-type filter (7) and a permanent magnet descaling device (8).

2. The multifunctional heat exchanger unit as described in claim 1, characterized in that, The secondary network return water system is equipped with a self-regulating differential pressure control valve (9).

3. The multifunctional heat exchanger unit as described in claim 1, characterized in that, The secondary network return water system is equipped with a steam-water separator (10).

4. A multifunctional heat exchanger unit as described in claim 1, characterized in that, A water hammer check valve (11) is installed at the outlet of the circulating pump (2) in the secondary network return water system.

5. A multifunctional heat exchanger unit as described in claim 1, characterized in that, The water supply system is equipped with a water softener (12) and a softening tank (13).

6. A multifunctional heat exchanger unit as described in claim 1, characterized in that, The water replenishment system is equipped with a pressure tank (14).

7. A multifunctional heat exchanger unit as described in claim 1, characterized in that, It also includes the control cabinet (15).

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