High-efficiency and energy-saving Tianfluor and Flor heat pump device

Abstract

The utility model discloses a high-efficiency energy-saving Tianfluor heat pump device, which belongs to the technical field of heat exchange devices and is characterized in that an outdoor unit is connected with an indoor unit through a stop valve group; the outdoor unit comprises a frequency conversion compressor, an oil separator, a four-way valve, a main heat exchanger, a first electronic expansion valve, a second electronic expansion valve, a gas-liquid separator and a liquid storage device. The indoor unit comprises a tail end inner unit and a floor heating capillary tube group; the device is divided into a refrigerating system and a heating system, and an air supplementing and enthalpy increasing system is additionally arranged in the heating system. The device is more stable, a warm water passage is not involved, and the later maintenance frequency is reduced; the risk of pipe expansion caused by freezing is not needed, water replenishing is not needed, and maintenance is easy; accessories such as water pumps, valves and water tanks are not needed, parts are few, and reliability is high; the air-supplementing and enthalpy-increasing system is additionally arranged in the heating system, the air-supplementing and enthalpy-increasing system is started when the temperature is too low, and stable operation can be achieved even in the low-environment-temperature area in winter.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange devices, in particular to a high-efficiency and energy-saving natural and local fluorine heat pump device. Background Art

[0002] At present, the combined energy and power supply products on the market mainly include two forms: "sky water and ground water" and "sky fluoride and ground water".

[0003] "Heavenly water and ground water" means that water is used as the heat exchange medium for both cooling and heating. When cooling in summer, the unit will produce cooling water that meets the required temperature, use the fan coil as the indoor terminal for heat exchange, and blow out the cold air. When heating in winter, the unit will produce hot water with a maximum temperature not exceeding 60°C, and conduct heat conduction heating through floor heating pipes, radiators, etc.

[0004] "Heaven-fluorine-ground-water" has two independent systems, fluorine and water, that is, the air conditioner uses fluorine, and the floor heating uses water. At the same time, the system can be switched freely through valves. When heating indoors, the two systems are turned on at the same time to raise the indoor temperature and let the room temperature reach a rated value. When cooling in summer, the heaven-fluorine-ground-water can be cooled through the fluorine air conditioning system.

[0005] However, whether it is "sky water and ground water" or "sky fluoride and ground water", there are two problems:

[0006] 1. In winter, both modes use water as the medium for heat exchange, and their energy efficiency is not low;

[0007] 2. The indoor terminal system of "ground water" is relatively complex. During construction and installation, it needs to be equipped with a series of HVAC components such as water tanks, water pumps, pipes, valves, etc. Its stability during winter operation is poor, and its installation is complicated. Later, during the use of users, it is easy to cause unit failure alarm due to poor construction of the "terminal system". Utility Model Content

[0008] The technical problem to be solved by the utility model is to provide a high-efficiency and energy-saving natural and ground fluorine heat pump device. The whole system is more stable, does not involve HVAC water circuits, and the number of later maintenance is reduced; there is no need to worry about the risk of freezing and expansion of pipes, and no water replenishment is required, and maintenance is simple; no water pumps, valves, water tanks and other accessories are required, there are fewer parts and components, and the reliability is high; an air replenishment and reheat increase system is added to the heating system, and the air replenishment and reheat increase system is started when the temperature is too low, so that it can operate stably even in areas with low ambient temperature in winter.

[0009] In order to solve the above technical problems, the technical solution of the utility model is implemented as follows:

[0010] A high-efficiency and energy-saving natural and ground-fluorine heat pump device, the device comprises an outdoor unit and an indoor unit, the outdoor unit and the indoor unit are connected via a stop valve group; the outdoor unit comprises a variable frequency compressor, an oil separator, a four-way valve, a main heat exchanger, an electronic expansion valve 1, an electronic expansion valve 2, a gas-liquid separator and a liquid storage device; the indoor unit comprises a terminal internal unit and a floor heating capillary group; the stop valve group comprises a liquid pipe stop valve 1 and a gas pipe stop valve 1 for cooling, and a gas pipe stop valve 2 and a liquid pipe stop valve 2 for heating;

[0011] The device is divided into a cooling system and a heating system;

[0012] When the refrigeration system is working, it runs in the order of variable frequency compressor, oil separator, four-way valve, main heat exchanger, electronic expansion valve 1, liquid pipe stop valve 1, terminal internal unit, gas pipe stop valve 1, gas-liquid separator, variable frequency compressor. The various parts in the refrigeration system are connected to each other through copper pipes.

[0013] When the refrigeration system is working, it runs in the order of variable frequency compressor, oil separator, four-way valve, gas pipe stop valve 2, floor heating capillary group, liquid pipe stop valve 2, liquid storage device, electronic expansion valve 2, main heat exchanger, four-way valve, gas-liquid separator, variable frequency compressor, and each part of the heating system is connected to each other through copper pipes.

[0014] The outdoor unit also includes an air-supply and reheat-increasing system, which includes a solenoid valve, an auxiliary electronic expansion valve and a small plate heat exchanger. When working, the air-supply and reheat-increasing system operates in the order of the solenoid valve, the auxiliary electronic expansion valve, the small plate heat exchanger and the variable frequency compressor, wherein the various parts of the air-supply and reheat-increasing system are interconnected in sequence through copper pipes, and the air-supply and reheat-increasing system is applied to the heating system.

[0015] As a preferred implementation of a high-efficiency and energy-saving natural and ground-fluorine heat pump device, in order to further and more accurately monitor the temperature, temperature sensors are installed on the variable frequency compressor, oil separator, main heat exchanger, small plate heat exchanger and the copper pipe next to the liquid reservoir.

[0016] As a preferred embodiment of a high-efficiency and energy-saving natural and ground-fluorine heat pump device, in order to further control the one-way flow, a check valve 1 is connected to the copper tube between the oil separator and the four-way valve. Through the check valve 1, the refrigerant in the copper tube can only flow in one direction from the oil separator to the four-way valve.

[0017] As a preferred implementation of a high-efficiency and energy-saving natural and ground-fluorine heat pump device, in order to further achieve a filtering effect, a filter 1 is connected to the copper pipe next to the main heat exchanger.

[0018] As a preferred embodiment of a high-efficiency and energy-saving natural and ground-fluorine heat pump device, in order to further control the one-way flow, a check valve No. 2 is connected to the copper tube between the four-way valve and the gas-liquid separator. Through the check valve No. 2, the refrigerant in the copper tube can only flow in one direction from the four-way valve to the gas-liquid separator.

[0019] As a preferred implementation of a high-efficiency and energy-saving natural and ground-fluorine heat pump device, in order to further and more accurately monitor the pressure, pressure switches are connected to the copper pipes next to the variable frequency compressor and the gas-liquid separator.

[0020] As a preferred implementation of a high-efficiency and energy-saving natural and ground-fluorine heat pump device, in order to further achieve a filtering effect, a filter 2 is connected to the copper pipe next to the oil separator.

[0021] As a preferred implementation of a highly efficient and energy-saving natural and ground-fluorine heat pump device, the electronic expansion valve 1 and the electronic expansion valve 2 are connected to the main heat exchanger through parallel copper pipes.

[0022] As a preferred embodiment of a high-efficiency and energy-saving natural and ground-fluorine heat pump device, the terminal indoor unit includes multiple terminal indoor units connected in parallel, wherein the terminal indoor unit is a ceiling unit or a duct unit fixed above the room.

[0023] As a preferred embodiment of a high-efficiency and energy-saving natural and ground-fluorine heat pump device, the floor heating capillary tube group is formed by connecting multiple floor heating capillaries in parallel through copper tubes, wherein the floor heating capillaries are laid flat in the shape of a U-shaped figure on the indoor floor.

[0024] After adopting the above technical solution, the beneficial effects of the utility model are:

[0025] 1. The heating system directly heats the floor with refrigerant, which has fast heating speed and high heat exchange efficiency, and can quickly achieve uniform heat dissipation, making the indoor constant temperature effect better;

[0026] 2. No need to worry about the risk of freezing and expansion of pipes, no need to replenish water, simple maintenance; no need for water pumps, valves, water tanks and other accessories, few parts and high reliability;

[0027] 3. The whole system is more stable, does not involve HVAC water circuits, and reduces the number of subsequent maintenance;

[0028] 4. An air-supply and reheat-increasing system is added to the heating system. When the temperature is too low, the air-supply and reheat-increasing system is started, and it can operate stably even in areas with low ambient temperatures in winter. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Figure 1 The schematic diagram of the whole system is shown in Figure 2.

[0031] Figure 2 for Figure 1 Schematic diagram of the outdoor unit;

[0032] Figure 3 for Figure 1 Schematic diagram of the indoor unit in the middle;

[0033] Figure 4 for Figure 1 Schematic diagram of the shut-off valve group used to connect the outdoor unit and the indoor unit;

[0034] Figure 5 for Figure 1 Flowchart during summer cooling operation;

[0035] Figure 6 Under normal circumstances Figure 5 Flowchart during winter heating operation;

[0036] Figure 7 For low temperature Figure 5 Flowchart for heating operation in winter.

[0037] Markings in the figure: 1- variable frequency compressor; 2- oil separator; 3- four-way valve; 4- main heat exchanger; 5- electronic expansion valve 1; 6- electronic expansion valve 2; 7- gas-liquid separator; 8- liquid reservoir; 9- terminal internal unit; 10- floor heating capillary group; 11- liquid pipe stop valve 1; 12- gas pipe stop valve 1; 13- gas pipe stop valve 2; 14- liquid pipe stop valve 2; 15- solenoid valve; 16- auxiliary electronic expansion valve; 17- small plate heat exchanger; 18- temperature sensor; 19- pressure switch; 20- check valve 1; 21- filter 1; 22- check valve 2; 23- filter 2. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] like Figures 1 to 4 As shown, a high-efficiency and energy-saving natural and ground-fluorine heat pump device comprises an outdoor unit and an indoor unit, and the outdoor unit and the indoor unit are connected via a stop valve group; the outdoor unit comprises a variable frequency compressor 1, an oil separator 2, a four-way valve 3, a main heat exchanger 4, an electronic expansion valve 1 5, an electronic expansion valve 2 6, a gas-liquid separator 7 and a liquid storage tank 8; the indoor unit comprises a terminal indoor unit 9 and a floor heating capillary group 10; the stop valve group comprises a liquid pipe stop valve 1 11 and a gas pipe stop valve 1 12 for cooling, and a gas pipe stop valve 2 13 and a liquid pipe stop valve 2 14 for heating;

[0040] The device is divided into a cooling system and a heating system;

[0041] When the refrigeration system is working, it operates in the order of variable frequency compressor 1, oil separator 2, four-way valve 3, main heat exchanger 4, electronic expansion valve 5, liquid pipe stop valve 11, terminal internal unit 9, gas pipe stop valve 12, gas-liquid separator 7, variable frequency compressor 1, wherein each part of the refrigeration system is connected to each other through copper pipes in sequence;

[0042] When the refrigeration system is working, it operates in the order of variable frequency compressor 1, oil separator 2, four-way valve 3, gas pipe stop valve 2 13, floor heating capillary tube group 10, liquid pipe stop valve 2 14, liquid storage device 8, electronic expansion valve 2 6, main heat exchanger 4, four-way valve 3, gas-liquid separator 7, variable frequency compressor 1, wherein the various parts in the heating system are connected to each other through copper pipes in sequence;

[0043] The outdoor unit also includes an air-supply and reheat-increasing system, which includes a solenoid valve 15, an auxiliary electronic expansion valve 16 and a small plate heat exchanger 17. When working, the air-supply and reheat-increasing system operates in the order of the solenoid valve 15, the auxiliary electronic expansion valve 16, the small plate heat exchanger 17 and the variable frequency compressor 1, wherein the various parts of the air-supply and reheat-increasing system are interconnected in sequence through copper pipes, and the air-supply and reheat-increasing system is applied to the heating system.

[0044] like Figure 1 to Figure 2 As shown, in order to further monitor the temperature more accurately, temperature sensors 18 are provided at the copper pipes beside the variable frequency compressor 1 , the oil separator 2 , the main heat exchanger 4 , the small plate heat exchanger 17 and the liquid storage tank 8 .

[0045] like Figure 1 to Figure 2 As shown, in order to further control the one-way flow, a check valve 20 is connected to the copper tube between the oil separator 2 and the four-way valve 3, through which the refrigerant in the copper tube can only flow in one direction from the oil separator 2 to the four-way valve 3.

[0046] like Figure 1 to Figure 2 As shown, in order to further achieve the filtering effect, a filter 21 is connected to the copper tube beside the main heat exchanger 4.

[0047] like Figure 1 to Figure 2 As shown, in order to further control the one-way flow, a second check valve 22 is connected to the copper tube between the four-way valve 3 and the gas-liquid separator 7, through which the refrigerant in the copper tube can only flow in one direction from the four-way valve 3 to the gas-liquid separator 7.

[0048] like Figure 1 to Figure 2 As shown, in order to further monitor the pressure more accurately, the copper tubes beside the variable frequency compressor 1 and the gas-liquid separator 7 are both connected with a pressure switch 19 .

[0049] like Figure 1 to Figure 2 As shown, in order to further achieve the filtering effect, a filter 2 23 is connected to the copper pipe beside the oil separator 2.

[0050] like Figure 1 to Figure 2 As shown, the electronic expansion valve 1 5 and the electronic expansion valve 2 6 are connected to the main heat exchanger 4 through parallel copper pipes.

[0051] like Figure 1 , Figure 3 As shown, the terminal indoor unit 9 includes a plurality of terminal indoor units connected in parallel, wherein the terminal indoor unit is a ceiling unit or a duct unit fixed above the room.

[0052] like Figure 1 , Figure 3 As shown, the floor heating capillary tube group 10 is formed by connecting a plurality of floor heating capillary tubes in parallel through copper tubes, wherein the floor heating capillary tubes are laid flat on the indoor floor in a U-shape.

[0053] The working principle of this utility model:

[0054] like Figure 5As shown, the operation of the flow chart is indicated by hollow arrows. During summer cooling, first, the host controls the opening of the electronic expansion valve 26 so that the refrigerant does not enter the floor heating capillary. During operation, the refrigerant is compressed by the variable frequency compressor 1 of the outdoor unit, and the refrigerant reaches the main heat exchanger 4 after passing through the oil separator 2 and the four-way valve 3. Then, the heat is dissipated through the main heat exchanger 4, and after throttling by the electronic expansion valve 5, it enters the indoor unit through the liquid pipe stop valve 11, and exchanges heat with the air through the indoor terminal unit (ceiling unit, duct unit) to achieve the cooling effect. Finally, the refrigerant returns to the outdoor unit from the gas pipe stop valve 12, and then returns to the variable frequency compressor 1 through the gas-liquid separator 7, and the reciprocating cycle is realized to achieve the cooling function.

[0055] like Figure 6 As shown, the operation of the flow chart is indicated by hollow arrows. Under normal winter heating conditions, first, the host controls the opening of the electronic expansion valve 15 so that the refrigerant does not enter the terminal unit, and controls the solenoid valve 15 to close. During operation, the refrigerant is compressed by the compressor of the outdoor unit, and all the high-temperature exhaust gas discharged passes through the oil separator 2, the four-way valve 3, and the gas pipe stop valve 2 13 in turn to enter the indoor unit, and generates heat through the indoor floor heating capillary group 10. The floor heating hot air radiates from the bottom to the indoor room, and the room temperature increases from top to bottom. Then the refrigerant returns to the outdoor unit from the liquid pipe stop valve 2 14, and passes through the liquid storage tank, the electronic expansion valve 2 6, the main heat exchanger 4, the four-way valve 3, the gas-liquid separator 7 in turn, and finally returns to the variable frequency compressor 1, and the reciprocating cycle is realized to realize the heating function.

[0056] like Figure 7 As shown, the operation of the flow chart is indicated by solid arrows. During winter heating at low temperatures, on the basis of normal heating, the host controls the solenoid valve 15 to open, and at this time the enthalpy increase circuit is opened, and the variable frequency compressor 1 is supplemented with air and enthalpy is increased through the auxiliary electronic expansion valve 16 and the small plate heat exchanger 17, thereby increasing the compressor exhaust volume, and achieving the purpose of improving the heating capacity in a low temperature environment.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-efficiency and energy-saving natural and ground-fluorine heat pump device, the device comprising an outdoor unit and an indoor unit, the outdoor unit and the indoor unit being connected via a stop valve group; the outdoor unit comprising a variable frequency compressor (1), an oil separator (2), a four-way valve (3), a main heat exchanger (4), an electronic expansion valve 1 (5), an electronic expansion valve 2 (6), a gas-liquid separator (7) and a liquid storage device (8); the indoor unit comprising a terminal indoor unit (9) and a floor heating capillary tube group (10); the stop valve group comprising a liquid pipe stop valve 1 (11) and a gas pipe stop valve 1 (12) for cooling, and a gas pipe stop valve 2 (13) and a liquid pipe stop valve 2 (14) for heating; Features: The device is divided into a cooling system and a heating system; When the refrigeration system is in operation, it operates in the order of the variable frequency compressor (1), the oil separator (2), the four-way valve (3), the main heat exchanger (4), the electronic expansion valve (5), the liquid pipe stop valve (11), the terminal internal unit (9), the gas pipe stop valve (12), the gas-liquid separator (7), and the variable frequency compressor (1), wherein the various parts of the refrigeration system are interconnected through copper pipes; When the refrigeration system is in operation, it operates in the order of the variable frequency compressor (1), the oil separator (2), the four-way valve (3), the second gas pipe stop valve (13), the floor heating capillary tube group (10), the second liquid pipe stop valve (14), the liquid storage device (8), the second electronic expansion valve (6), the main heat exchanger (4), the four-way valve (3), the gas-liquid separator (7), and the variable frequency compressor (1), wherein the various parts of the heating system are interconnected through copper tubes; The outdoor unit also includes an air-supply and heat-increasing system, which includes a solenoid valve (15), an auxiliary electronic expansion valve (16) and a small plate heat exchanger (17). When working, the air-supply and heat-increasing system operates in the order of the solenoid valve (15), the auxiliary electronic expansion valve (16), the small plate heat exchanger (17) and the variable frequency compressor (1), wherein the various parts of the air-supply and heat-increasing system are interconnected through copper pipes in sequence, and the air-supply and heat-increasing system is applied to a heating system.

2. The high-efficiency and energy-saving natural and ground-fluorine heat pump device according to claim 1 is characterized in that: The variable frequency compressor (1), the oil separator (2), the main heat exchanger (4), the small plate heat exchanger (17) and the copper pipe beside the liquid storage device (8) are all provided with temperature sensors (18).

3. The high-efficiency and energy-saving natural and ground-fluorine heat pump device according to claim 2 is characterized in that: The copper tube between the oil separator (2) and the four-way valve (3) is also connected to a check valve (20), through which the refrigerant in the copper tube can only flow in one direction from the oil separator (2) to the location of the four-way valve (3).

4. The high-efficiency and energy-saving natural and ground-fluorine heat pump device according to claim 3 is characterized in that: The copper tube beside the main heat exchanger (4) is connected to a filter 1 (21).

5. The high-efficiency and energy-saving natural and ground-fluorine heat pump device according to claim 4 is characterized in that: The copper tube between the four-way valve (3) and the gas-liquid separator (7) is also connected to a second check valve (22), through which the refrigerant in the copper tube can only flow in one direction from the four-way valve (3) to the location of the gas-liquid separator (7).

6. The high-efficiency and energy-saving natural and ground-fluorine heat pump device according to claim 5, characterized in that: The variable frequency compressor (1) and the copper tube beside the gas-liquid separator (7) are both connected to a pressure switch (19).

7. The high-efficiency and energy-saving natural and ground-fluorine heat pump device according to claim 6, characterized in that: The copper tube beside the oil separator (2) is connected to a second filter (23).

8. The high-efficiency and energy-saving natural and ground-fluorine heat pump device according to claim 7 is characterized in that: The electronic expansion valve 1 (5) and the electronic expansion valve 2 (6) are connected to the main heat exchanger (4) via a copper tube connected in parallel.

9. The high-efficiency and energy-saving natural and local fluorine heat pump device according to any one of claims 1 to 8, characterized in that: The terminal indoor unit (9) comprises a plurality of terminal indoor units connected in parallel, wherein the terminal indoor unit is a ceiling unit or a duct unit fixed above the room.

10. The high-efficiency and energy-saving natural and ground-fluorine heat pump device according to claim 9, characterized in that: The floor heating capillary tube group (10) is formed by connecting a plurality of floor heating capillary tubes in parallel through copper tubes, wherein the floor heating capillary tubes are laid flat on the floor indoors in a U-shaped pattern.

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