Indoor ground source heat pump

Abstract

The indoor ground source heat pump comprises a box body, a system assembly, an electric appliance box, a mounting plate, an exhaust fan, an air guide pipe and a protection plate, and an air outlet is formed in the side face of the box body; the system assembly is mounted in the box body; the electric appliance box is installed in the box body and located above the system assembly. The mounting plate is mounted at the bottom of the electric appliance box, and an air inlet is formed in the mounting plate; the exhaust fan is mounted on the mounting plate, and the air inlet side of the exhaust fan corresponds to the air inlet; the air guide pipe comprises a first connector and a second connector which are opposite to each other, the first connector is connected with the air outlet side of the exhaust fan, and the second connector is connected to the air outlet; the protection plate is mounted at the air inlet, and a plurality of ventilation openings are formed in the protection plate; by ensuring that the interior of the box body is always in a negative pressure state, refrigerant can be discharged outdoors at the first time when the refrigerant leaks, the protection effect is good, and heat dissipation of the electric appliance box can be assisted.

Description

Technical Field

[0001] The present application relates to the technical field of heat pump devices, and in particular to an indoor ground source heat pump. Background Art

[0002] The ground source heat pump follows the reverse Carnot principle, that is, a smaller power consumption is supplied to the heat pump from the outside, and a large amount of low-temperature heat is absorbed from the low-temperature environment at the same time. The heat pump can output heat energy with a much higher temperature and send it to the high-temperature environment. Specifically, it uses the solar energy and geothermal energy absorbed from shallow water sources on the earth's surface (such as groundwater, rivers and lakes) and soil sources, and through a small amount of high-level electric energy input, it realizes the transfer of low-level heat energy to high-level heat energy and completes heat exchange with the building. When the ground source heat pump is set indoors, if there is a refrigerant leak or similar accident, if the refrigerant cannot be discharged to the room in a timely and effective manner, serious safety accidents are likely to occur. However, the existing protective structure only takes corresponding measures for refrigerant leaks, and the protective effect is not good. Moreover, the protective structure generally takes the form of a fan with a single function. Utility Model Content

[0003] The purpose of the embodiment of the present application is to provide an indoor ground source heat pump, which ensures that the box is always in a negative pressure state by controlling the exhaust fan to work continuously, and can discharge the refrigerant to the outside at the first time when it leaks, with good protection effect. In addition, the exhaust fan is arranged under the electrical box to assist the electrical box in dissipating heat.

[0004] To achieve the above objectives, this application adopts the following technical solutions:

[0005] In one aspect, an indoor ground source heat pump is provided, comprising: a box body, a side of which is provided with an air outlet;

[0006] System components are installed in the box;

[0007] An electrical box, installed in the box and located above the system components;

[0008] A mounting plate, mounted on the bottom of the electrical box, with an air inlet formed on the mounting plate;

[0009] An exhaust fan is mounted on the mounting plate, and an air inlet side of the exhaust fan corresponds to the air inlet;

[0010] An air duct, comprising a first interface and a second interface opposite to each other, wherein the first interface is connected to the air outlet side of the exhaust fan, and the second interface is connected to the air outlet;

[0011] A protective plate is installed on the air inlet, and a plurality of ventilation holes are formed on the protective plate.

[0012] Furthermore, the area of ​​the air inlet is larger than the air inlet side area of ​​the exhaust fan.

[0013] Furthermore, the mounting plate is provided with an air guide portion connected with the edge of the air inlet.

[0014] Furthermore, the air guide portion is inclined and is arranged obliquely from the outer side of the mounting plate toward the air inlet.

[0015] Furthermore, the total area of ​​all the ventilation openings accounts for 90%-96% of the area of ​​the air inlet.

[0016] Furthermore, the cross section of the air guide duct is trapezoidal, and the area of ​​the second interface is twice the area of ​​the first interface.

[0017] Furthermore, the thickness of the exhaust fan along the first direction is x, and the length of the air guide duct along the first direction is y, wherein 4x≤y≤5x.

[0018] Furthermore, 20mm≤x≤25mm, 100mm≤y≤125mm.

[0019] Furthermore, it also includes a temperature sensor, which is installed on the electrical box and electrically connected to the exhaust fan; and / or it also includes a refrigerant concentration detector, which is installed in the box and electrically connected to the exhaust fan.

[0020] Furthermore, it also includes an exhaust pipe, one end of which is connected to the air outlet, and the other end of which extends to the outdoors.

[0021] The beneficial effects of the present application are as follows: through the continuous operation of the exhaust fan, a negative pressure state is maintained inside the box, ensuring that harmful gases can be quickly discharged outdoors when the refrigerant leaks, reducing the risk of indoor accumulation, and due to the negative pressure environment and the immediate effect of the exhaust fan, the refrigerant leak can be quickly dealt with, reducing the potential harm of the leakage incident to the environment and human body. At the same time, the exhaust fan helps the electrical components in the electrical box to dissipate heat by inhaling cold air, maintains the stability of its operating temperature, and improves the reliability of system operation. Good heat dissipation conditions help reduce the risk of damage to electrical components due to overheating, thereby extending the service life of the entire system. This solution not only has the function of protecting against refrigerant leakage, but also assists the electrical box in dissipating heat, realizing functional integration and optimization, and because key components such as the exhaust fan and the electrical box are installed in the box, they can be flexibly configured and adjusted according to actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present application is further described in detail below based on the drawings and embodiments.

[0023] Figure 1 A schematic diagram of an indoor ground source heat pump according to an embodiment of the present application;

[0024] Figure 2 A three-dimensional assembly diagram of the mounting plate, the exhaust fan and the air duct described in the embodiment of the present application;

[0025] Figure 3 A side view of the mounting plate, the exhaust fan and the air duct according to the embodiment of the present application;

[0026] Figure 4 A three-dimensional diagram of the mounting plate described in the embodiment of the present application;

[0027] Figure 5 A three-dimensional diagram of the protective plate described in the embodiment of the present application;

[0028] Figure 6 This is a side view of the air duct described in the embodiment of the present application.

[0029] In the figure: 1. Box body; 2. System components; 3. Electrical box; 4. Mounting plate; 401. Air inlet; 5. Exhaust fan; 6. Air duct; 601. First interface; 602. Second interface; 7. Protective plate; 701. Ventilation port; 8. Refrigerant concentration detector. DETAILED DESCRIPTION

[0030] In order to make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0031] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] like Figure 1-Figure 6 As shown, this embodiment provides an indoor ground source heat pump, including: a box body 1, a system component 2, an electrical box 3, a mounting plate 4, an exhaust fan 5, an air duct 6 and a protective plate 7, the side of the box body 1 is provided with an air outlet; the system component 2 is installed in the box body 1; the electrical box 3 is installed in the box body 1 and is located above the system component 2; the mounting plate 4 is installed at the bottom of the electrical box 3, and the mounting plate 4 is provided with an air inlet 401; the exhaust fan 5 is installed on the mounting plate 4, and the exhaust fan 5 corresponds to the air inlet 401; the air duct 6 includes a first interface 601 and a second interface 602 relative to each other, the first interface 601 is connected to the air outlet side of the exhaust fan 5, and the second interface 602 is connected to the air outlet; the protective plate 7 is installed on the air inlet 401, and a plurality of ventilation holes 701 are opened on the protective plate 7; wherein, the system component 2 includes key components such as a compressor, a condenser, and an evaporator, which circulate in the box 1 to realize the transfer of heat energy.

[0034] Based on the above scheme, the exhaust fan 5 is installed on the mounting plate 4 below the electrical box 3, and its air inlet side is aligned with the air inlet 401. When the exhaust fan 5 is working, it will continuously inhale air from the air inlet 401, and discharge the air to the outside of the box 1 through the air duct 6, so that a negative pressure state is formed in the box 1. This negative pressure state can ensure that when the refrigerant leaks, the leaked refrigerant can be sucked in and discharged to the outside through the exhaust fan 5 at the first time, thereby greatly reducing the risk of refrigerant accumulation in the room. Since the exhaust fan 5 is located below the electrical box 3, it will continuously inhale cold air when it is working, and enter the interior of the electrical box 3 through the air inlet 401, taking away the heat generated by the electrical components. This design not only improves the heat dissipation efficiency of the electrical box 3, but also ensures that the electrical components work in a stable temperature environment, extending their service life. A protective plate 7 is installed at the air inlet 401, and a plurality of vents 701 are provided on the protective plate 7. The main function of the protective plate 7 is to prevent the operator from accidentally touching the exhaust fan 5 in operation to avoid safety accidents, while the vents 701 ensure that the exhaust fan 5 can normally inhale air and maintain normal air circulation, thereby ensuring that the box 1 is always in a negative pressure state. In general, by controlling the exhaust fan 5 to work continuously, the box 1 is always in a negative pressure state, and the refrigerant can be discharged outdoors at the first time of leakage, which greatly improves the safety performance of the equipment. At the same time, the exhaust fan 5 is located below the electrical box 3, which can assist the electrical box 3 in heat dissipation, ensure that the electrical components work in a stable temperature environment, and improve the reliability and stability of the system.

[0035] Furthermore, the area of ​​the air inlet 401 is larger than the air inlet side area of ​​the exhaust fan 5. Since the exhaust fan 5 is installed on the mounting plate 4, if the air inlet 401 opened on the mounting plate 4 is too small, it will inevitably affect the air intake of the exhaust fan 5, that is, it will hinder the inflow of wind, which will easily lead to an increase in the noise of the exhaust fan 5. Therefore, setting the area of ​​the air inlet 401 larger than the ventilation area of ​​the exhaust fan 5 can ensure that the wind can flow in smoothly and prevent the generation of noise, or effectively reduce the noise. The ventilation area described here is the air inlet side area of ​​the exhaust fan 5. In principle, if the area of ​​the air inlet 401 is too small, the exhaust fan 5 will generate vortices and resistance when inhaling air, thereby increasing the noise, while the larger air inlet 401 can reduce such vortices and resistance, reduce the noise of air flow, and make the system quieter when running. Especially for ground source heat pumps installed indoors, reducing the noise level is crucial to improving the comfort of the living environment.

[0036] In order to ensure that the air inlet 401 can be larger than the ventilation area of ​​the exhaust fan 5, the mounting plate 4 is provided with an air guide portion connected with the edge of the air inlet 401, and the air guide portion is inclined and is inclined from the outside of the mounting plate 4 toward the air inlet 401. The design of the air guide portion expands the actual effective area of ​​the air inlet 401. Since the air guide portion is inclined from the outside of the mounting plate 4 toward the air inlet 401, it forms an expanded opening, so that more air can flow smoothly into the air inlet 401. The inclined air guide portion can guide the air from the outside of the mounting plate 4 to the air inlet 401, effectively reducing the resistance of the air flow, and preventing the turbulence and vortex of the air flow, so that the air intake is smoother. The smooth airflow reduces the turbulence and impact of the air at the air inlet 401, thereby reducing the noise generated by the air flow, which provides a quieter and more comfortable use environment for users. At the same time, since the area of ​​the air inlet 401 is larger than the ventilation area of ​​the exhaust fan 5, the exhaust fan 5 can inhale air more effectively, thereby improving the ventilation efficiency.

[0037] Preferably, the total area of ​​all the vents 701 accounts for 90%-96% of the area of ​​the air inlet 401. In order to suppress the noise caused by turbulence, the total area of ​​the vents 701 of the protective plate 7 is as close to the ventilation area of ​​the exhaust fan 5 as possible. The following are the noise decibels obtained from the tests with different area proportions: when the area proportion is 73%, the measured noise value is 17.0dB; when the area proportion is 79%, the measured noise value is 14.7dB; when the area proportion is 82%, the measured noise value is 10.8dB; when the area proportion is 95%, the measured noise value is 3.2dB; from this comparison, it can be seen that when the total area of ​​the vents 701 accounts for 95% of the area of ​​the air inlet 401, the noise value is significantly reduced, which is of great significance for the overall noise reduction of the ground source heat pump.

[0038] It should be noted that a protective plate 7 is provided on the air inlet side of the exhaust fan 5, so the vent 701 on the protective plate 7 needs to be limited, and the air outlet side of the exhaust fan 5 is directly connected to the air duct 6, which is equivalent to that the ventilation area on the air outlet side of the exhaust fan 5 is 100% ventilated, and the flow of wind will not be hindered, so there is no need for additional structure to optimize the noise on the air outlet side of the exhaust fan 5.

[0039] In some embodiments, the cross-section of the air duct 6 is trapezoidal, and the area of ​​the second interface 602 is twice the area of ​​the first interface 601. The second interface 602 serves as the air outlet, the first interface 601 serves as the air inlet, and the second buckle is designed to be twice the area of ​​the first interface 601. Such a design allows the air outlet to discharge more air at the same pressure, which helps to optimize the airflow distribution in the system and ensure that the air can flow more efficiently. Due to the increase in the area of ​​the air outlet, the air in the air duct 6 can be discharged faster, reducing the residence time of the air in the pipeline, which helps to reduce the pressure in the pipeline and improve the overall ventilation efficiency of the system. In addition, the trapezoidal design and the larger air outlet area can reduce the turbulence and vortex of the air in the pipeline, thereby reducing the noise generated by the air flow. Provide users with a quieter use environment. At the same time, the air duct 6 can also be used as a heat dissipation channel to take away heat from the device. By increasing the area of ​​the air outlet, the heat can be discharged more effectively, the heat dissipation performance can be improved, and the stable operation of the device can be ensured.

[0040] Optionally, the thickness of the exhaust fan 5 along the first direction is x, and the length of the air duct 6 along the first direction is y, wherein 4x≤y≤5x, 20mm≤x≤25mm, 100mm≤y≤125mm, specifically x=25mm, y=105mm. An appropriate thickness x of the exhaust fan 5 can ensure that the exhaust fan 5 has sufficient strength and stability during operation, while avoiding increased wind resistance and increased noise caused by excessive thickness. The proportional relationship between the length y of the air duct 6 and the thickness x of the exhaust fan 5 (4x≤y≤5x) ensures that the air duct 6 has sufficient length to smoothly guide the air flow and reduce turbulence and noise. The specific length y of the air duct 6 (100mm≤y≤125mm) and the thickness x of the exhaust fan 5 (20mm≤x≤25mm) are based on actual applications and tests. These values ​​can effectively reduce noise in actual applications. In summary, by limiting the size of the exhaust fan 5 and the air duct 6, we can effectively reduce the noise generated when the wind passes through the exhaust fan 5 and the air duct 6. This is because the appropriate size design can reduce the turbulence and resistance of the air flow, thereby reducing the noise generation. Under the given specific values ​​(x = 25mm, y = 105mm), these size restrictions are met, so it can be expected that there will be a lower noise level in actual application.

[0041] Furthermore, it also includes a temperature sensor, which is installed on the electrical box 3 and is electrically connected to the exhaust fan 5; and / or it also includes a refrigerant concentration detector 8, which is installed in the box 1 and is electrically connected to the exhaust fan 5. The temperature sensor is used to monitor the temperature in the electrical box 3. When the temperature exceeds the preset safety threshold, the exhaust fan 5 can be triggered to increase the speed or start an additional cooling mechanism through electrical connection to ensure that the electronic equipment in the electrical box 3 works within a safe temperature range. The refrigerant concentration detector 8 is used to monitor the refrigerant concentration in the box 1. When an abnormal refrigerant concentration is detected, such as an increase in concentration caused by leakage, the exhaust fan 5 can be triggered to accelerate operation through electrical connection to discharge the leaked refrigerant and reduce its impact on the environment and equipment. At the same time, the system can trigger an alarm or perform other safety measures according to the detected concentration level, such as shutting down related equipment or starting an emergency procedure. The introduction of the temperature sensor and the refrigerant concentration detector 8 enhances the safety and reliability of the system. By real-time monitoring of the temperature in the electrical box 3 and the refrigerant concentration in the box 1, the system can respond quickly to abnormal situations and reduce potential risks.

[0042] It is worth mentioning that it also includes an exhaust duct, one end of which is connected to the air outlet and the other end extends to the outdoors. One end of the exhaust duct needs to be tightly connected to the air outlet of the equipment to ensure that the exhausted air can smoothly enter the exhaust duct, and the connection should be well sealed to avoid air leakage. The other end of the exhaust duct needs to extend to the outdoors to ensure that the exhausted air can be directly discharged into the atmosphere. During the extension process, it should be ensured that the exhaust duct will not be blocked or damaged by external objects. The exhaust duct needs to be fixed and supported during the installation process to ensure its stability and safety. The fixing method should be selected according to the specific situation, such as using a bracket, hanger, etc.

[0043] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and other directions or positional relationships are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of this application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0044] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0045] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0046] The technical principles of the present application are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present application and cannot be interpreted as limiting the scope of protection of the present application in any way. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the present application without creative work, and these methods will fall within the scope of protection of the present application.

Claims

1. An indoor ground source heat pump, characterized in that: include: The box body (1) has an air outlet on its side; A system component (2) is installed in the housing (1); An electrical box (3) is installed in the box (1) and is located above the system component (2); A mounting plate (4) mounted on the bottom of the electrical box (3), the mounting plate (4) being provided with an air inlet (401); An exhaust fan (5) is installed on the installation plate (4), and the air inlet side of the exhaust fan (5) corresponds to the air inlet (401); An air guide duct (6), comprising a first interface (601) and a second interface (602) which are opposite to each other, wherein the first interface (601) is connected to the air outlet side of the exhaust fan (5), and the second interface (602) is connected to the air outlet; A protective plate (7) is installed on the air inlet (401), and a plurality of ventilation holes (701) are provided on the protective plate (7).

2. The indoor ground source heat pump according to claim 1, characterized in that: The area of ​​the air inlet (401) is larger than the air inlet side area of ​​the exhaust fan (5).

3. The indoor ground source heat pump according to claim 2, characterized in that: The mounting plate (4) is provided with an air guide portion connected to the edge of the air inlet (401), and the air guide portion is inclined.

4. The indoor ground source heat pump according to any one of claims 1 to 3, characterized in that: The total area of ​​all the ventilation openings (701) accounts for 90%-96% of the area of ​​the air inlet (401).

5. The indoor ground source heat pump according to any one of claims 1 to 3, characterized in that: The cross section of the air guide duct (6) is in a trapezoidal shape, and the area of ​​the second interface (602) is twice the area of ​​the first interface (601).

6. The indoor ground source heat pump according to any one of claims 1 to 3, characterized in that: The thickness of the exhaust fan (5) along the first direction is x, and the length of the air guide duct (6) along the first direction is y, wherein 4x≤y≤5x.

7. The indoor ground source heat pump according to claim 6, characterized in that: 20mm≤x≤25mm, 100mm≤y≤125mm.

8. The indoor ground source heat pump according to any one of claims 1 to 3, characterized in that: It also includes a temperature sensor, which is installed on the electrical box (3) and is electrically connected to the exhaust fan (5).

9. The indoor ground source heat pump according to any one of claims 1 to 3, characterized in that: It also includes a refrigerant concentration detector (8), which is installed in the box body (1) and is electrically connected to the exhaust fan (5).

10. The indoor ground source heat pump according to any one of claims 1 to 3, characterized in that: It also includes an exhaust pipe, one end of which is connected to the air outlet, and the other end of which extends to the outdoors.

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