Energy-saving air conditioner indoor unit
By designing an energy-saving indoor air conditioner with a well water cooling source, eliminating the outdoor unit and condenser, and using a second evaporator and shell-and-tube heat exchanger for cooling, the problems of complex air conditioner structure and high energy consumption are solved, achieving low-cost and high-efficiency cooling.
Patent Information
- Application Number
- CN202520811407.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-04-27
AI Technical Summary
Existing air conditioners are complex in structure, expensive, and energy-intensive, and cannot achieve independent cooling.
Design an energy-saving indoor air conditioner unit that uses well water as a cold source, eliminates the outdoor unit and condenser, utilizes a second evaporator and a shell-and-tube heat exchanger for cooling, and is equipped with a filter and cleaning components to ensure heat exchange efficiency. Combined with a water pump and a drain pump, it realizes the collection and discharge of condensate.
It achieves independent cooling effect with simple structure, low cost and low energy consumption, improves heat exchange efficiency and cooling efficiency, and has the advantages of good cold source continuity and environmental protection and energy saving.
Smart Images
Figure CN223924992U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air conditioner technology, and more specifically, to an energy-saving air conditioner indoor unit. Background Technology
[0002] An air conditioner is a device used to regulate the temperature of an indoor environment. Currently, air conditioners on the market all include an outdoor unit and an indoor unit. That is, existing air conditioners rely on the coordinated action of the outdoor and indoor units to regulate the temperature of the indoor environment, which results in the disadvantages of complex structure and high cost. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide an energy-saving air conditioner indoor unit, which has the advantages of simple structure, low cost and low energy consumption.
[0004] This utility model provides an energy-saving air conditioner indoor unit, including an indoor unit housing, a first evaporator, a fan, a compressor assembly, and an expansion valve assembly. An air inlet is located on the rear side of the indoor unit housing, and an air outlet is located on the front side of the indoor unit housing. A nozzle is fixed at the air outlet. The first evaporator and the fan are sequentially fixed from back to front on the inner side of the indoor unit housing located between the air inlet and the air outlet. The compressor assembly and the expansion valve assembly are both fixed on the inner side of the indoor unit housing. The energy-saving air conditioner indoor unit also includes a second evaporator and a shell-and-tube heat exchanger. The second evaporator is fixed on the inner side of the indoor unit housing between the air inlet and the first evaporator. The first inlet end of the shell-and-tube heat exchanger is connected in series with the compressor assembly and then connected to the outlet end of the first evaporator. The first outlet end of the shell-and-tube heat exchanger is connected in series with the expansion valve assembly and then connected to the inlet end of the first evaporator. The water inlet end of the second evaporator is connected to the outlet of a water pump located in a water outlet well via an inlet pipe. The water outlet end of the second evaporator is connected to the second inlet end of the shell-and-tube heat exchanger. The second outlet end of the shell-and-tube heat exchanger is connected to a water return well via a return pipe.
[0005] The energy-saving indoor unit of this utility model can independently complete the cooling and achieve the cooling of the indoor environment. Moreover, the energy-saving indoor unit of this utility model relies on well water as a cold source and eliminates the use of outdoor unit and condenser, thus having the advantages of simple structure and low cost. In addition, by using well water as a cold source, the energy consumption of air conditioning can be further reduced, so as to achieve the purpose of energy saving and environmental protection.
[0006] In one possible implementation, a filter screen is fixed at the air inlet; by setting the filter screen, the filter screen can block dust in the air of the external environment from entering the interior of the indoor unit through the air inlet, thereby effectively preventing dust from accumulating on the first evaporator and the second evaporator, that is, ensuring the heat exchange efficiency of the first evaporator and the second evaporator.
[0007] In one possible implementation, a cleaning component is connected to the rear side of the inner casing. The cleaning component is used to clean the filter screen. By setting up the cleaning component, the cleaning component can clean the dust adsorbed on the filter screen, which has the advantage of convenient filter screen cleaning.
[0008] In one possible implementation, the cleaning assembly includes a support frame, a movable frame, and a cylinder. The support frame is fixed to the rear side of the inner unit housing and corresponds to the air inlet. The movable frame is movably connected to the rear side of the support frame via two vertically symmetrical guide rail assemblies. Several sets of bristle groups spaced from left to right are fixed to the front side of the movable frame, with the front ends of the bristle groups abutting against the filter screen. The cylinder is horizontally fixed to the rear side of the inner unit housing, and the movable frame is fixed to the piston rod of the cylinder. The cylinder is used to drive the movable frame to move left and right so that the bristle groups clean the filter screen. By using this cleaning assembly, when the piston rod of the cylinder extends and retracts to drive the movable frame to move back and forth relative to the support frame, the several sets of bristle groups can clean the dust adsorbed on the filter screen, thus providing the advantage of convenient filter screen cleaning.
[0009] In one possible implementation, a drip tray is fixed to the bottom of the inner casing of the indoor unit. The first evaporator and the second evaporator are both located above the drip tray. A drain pump is fixed to the bottom of the drip tray, and the drain outlet of the drain pump is connected to a drain pipe. By setting up the drip tray, the drip tray can collect the condensate falling from the first evaporator and the second evaporator, so as to achieve the collection of condensate. Under the action of the drain pump, the condensate accumulated in the drip tray can be smoothly discharged to the outside of the indoor unit casing. Attached Figure Description
[0010] Figure 1 This is the first three-dimensional structural schematic diagram of the present invention;
[0011] Figure 2 This is a second three-dimensional structural schematic diagram of the present invention;
[0012] Figure 3 This is a partially exploded three-dimensional structural diagram of the present invention. Detailed Implementation
[0013] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.
[0014] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.
[0015] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0016] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0017] See Figure 1-3 As shown in the figure, this application discloses an energy-saving air conditioner indoor unit, including an indoor unit housing 1, a first evaporator 2, a fan 3, a compressor assembly 4, and an expansion valve assembly 5; an air inlet 11 is provided on the rear side of the indoor unit housing 1, and an air outlet 12 is provided on the front side of the indoor unit housing 1, with a nozzle 6 fixed at the air outlet 12; the first evaporator 2 and the fan 3 are fixed sequentially from back to front on the inner side of the indoor unit housing 1 located between the air inlet 11 and the air outlet 12; the compressor assembly 4 and the expansion valve assembly 5 are both fixed on the inner side of the indoor unit housing 1; the energy-saving air conditioner indoor unit also includes a second evaporator 7 and a shell-and-tube heat exchanger. 8; The second evaporator 7 is fixed inside the inner side of the indoor unit casing 1 between the air inlet 11 and the first evaporator 2. The first inlet end of the shell-and-tube heat exchanger 8 is connected to the outlet end of the first evaporator 2 after being connected in series with the compressor assembly 4. The first outlet end of the shell-and-tube heat exchanger 8 is connected to the inlet end of the first evaporator 2 after being connected in series with the expansion valve assembly 5. The water inlet end of the second evaporator 7 is connected to the outlet of the water pump located in the water outlet well 9 through the water inlet pipe 71. The water outlet end of the second evaporator 7 is connected to the second inlet end of the shell-and-tube heat exchanger 8. The second outlet end of the shell-and-tube heat exchanger 8 is connected to the return water well 10 through the return water pipe 81.
[0018] A filter screen 20 is fixed at the air inlet 11. The filter screen can block dust in the air of the external environment from entering the interior of the indoor unit through the air inlet, thereby effectively preventing dust from accumulating on the first evaporator and the second evaporator, thus ensuring the heat exchange efficiency of the first evaporator and the second evaporator.
[0019] A cleaning component is connected to the rear side of the inner casing 1. The cleaning component is used to clean the filter screen 20. With the setting of the cleaning component, the cleaning component can clean the dust adsorbed on the filter screen, which has the advantage of convenient filter screen cleaning.
[0020] The cleaning assembly includes a support frame 30, a movable frame 40, and a cylinder 50. The support frame 30 is fixed to the rear side of the inner unit housing 1 and corresponds to the air inlet 11. The movable frame 40 is movably connected to the rear side of the support frame 30 via two vertically symmetrical guide rail assemblies. Several sets of bristle groups 401, spaced from left to right, are fixed to the front side of the movable frame 40. The front ends of the bristle groups 401 abut against the filter screen 20. The cylinder 50 is horizontally fixed to the rear side of the inner unit housing 1. The movable frame 40 is fixed to the piston rod of the cylinder 50. The cylinder 50 is used to drive the movable frame 40 to move left and right so that the bristle groups 401 clean the filter screen 20. By using this cleaning assembly, when the piston rod of the cylinder moves back and forth to drive the movable frame to move back and forth relative to the support frame, the several sets of bristle groups can clean the dust adsorbed on the filter screen, thus providing the advantage of convenient filter screen cleaning.
[0021] A water collection tray 60 is fixed on the bottom of the inner casing 1. The first evaporator 2 and the second evaporator 7 are both located above the water collection tray 60. A drain pump 601 is fixed on the bottom of the water collection tray 60, and the drain outlet of the drain pump 601 is connected to the drain pipe. Through the setting of the water collection tray, the water collection tray can receive the condensate falling from the first evaporator and the second evaporator to achieve the collection of condensate. Under the action of the drain pump, the condensate accumulated in the water collection tray can be smoothly discharged to the outside of the inner casing. The drain pump is a float-type drain pump. When the condensate in the water collection tray accumulates to a certain height and triggers the float of the float-type drain pump, the drain pump can automatically turn on and discharge the condensate. When the condensate in the water collection tray drops to a certain height, the drain pump can automatically turn off.
[0022] In operation, the water pump located in the outlet well continuously supplies well water to the second evaporator for cooling. The well water discharged from the second evaporator flows through a shell-and-tube heat exchanger, cooling it as well. The cooled well water then flows back to the return well. During this process, while the second evaporator is continuously cooled by the well water, it pre-cools the air entering from the air inlet, thereby reducing the cooling load on the first evaporator and improving its cooling efficiency. Secondly, when the shell-and-tube heat exchanger is continuously cooled by well water, it can continuously cool the refrigerant from the compressor assembly, so that the refrigeration circuit consisting of the compressor assembly, the shell-and-tube heat exchanger, the expansion valve assembly, and the first evaporator can operate smoothly. With the first evaporator pre-cooling the air and the second evaporator further cooling the air, the cooling efficiency and effect of the energy-saving air conditioner indoor unit can be improved. Moreover, relying on well water as the cold source for the second evaporator and the shell-and-tube heat exchanger has the advantages of good cold source continuity and low energy consumption, thus having the advantages of energy saving and environmental protection.
[0023] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. An energy-saving indoor air conditioner, comprising an indoor unit shell (1), a first evaporator (2), a fan (3), a compressor assembly (4) and an expansion valve assembly (5); the rear side of the indoor unit shell (1) is provided with an air inlet (11), the front side of the indoor unit shell (1) is provided with an air outlet (12), the air outlet (12) is fixed with a nozzle (6), the first evaporator (2) and the fan (3) are fixed in sequence from back to front on the inner side of the indoor unit shell (1) between the air inlet (11) and the air outlet (12), and the compressor assembly (4) and the expansion valve assembly (5) are both fixed on the inner side of the indoor unit shell (1); characterized in that: The energy-saving indoor air conditioner further comprises a second evaporator (7) and a double-pipe heat exchanger (8); the second evaporator (7) is fixed to the inner side of the indoor housing (1) between the air inlet (11) and the first evaporator (2), the first inlet end of the double-pipe heat exchanger (8) is connected with the outlet end of the first evaporator (2) in series with the compressor assembly (4), the first outlet end of the double-pipe heat exchanger (8) is connected with the inlet end of the first evaporator (2) in series with the expansion valve assembly (5); the water inlet end of the second evaporator (7) is connected with the water outlet of the water pump in the water outlet well (9) through a water inlet pipe (71), the water outlet end of the second evaporator (7) is connected with the second inlet end of the double-pipe heat exchanger (8), and the second outlet end of the double-pipe heat exchanger (8) is connected with the water return well (10) through a water return pipe (81).
2. The energy-saving indoor unit of claim 1, wherein: The air inlet (11) is fixed with a filter screen (20).
3. The energy-saving indoor unit of claim 2, wherein: The rear side of the indoor housing (1) is connected with a cleaning assembly, which is used for cleaning the filter screen (20).
4. The energy-saving indoor unit of claim 3, wherein the indoor unit further comprises a first damper and a second damper. The cleaning assembly comprises a support frame (30), a moving frame (40) and a cylinder (50); the support frame (30) is fixed to the rear side of the indoor housing (1) and corresponds to the air inlet (11), the moving frame (40) is movably connected to the rear side of the support frame (30) through two up-and-down symmetrically arranged guide rail assemblies, the front side of the moving frame (40) is fixed with a plurality of groups of bristle groups (401) which are distributed from left to right, the front end of the bristle group (401) abuts against the filter screen (20), the cylinder (50) is fixed horizontally to the rear side of the indoor housing (1), the moving frame (40) is fixed with the piston rod of the cylinder (50), and the cylinder (50) is used for driving the moving frame (40) to move left and right so that the bristle group (401) cleans the filter screen (20).
5. The energy-saving indoor unit of any one of claims 1-4, wherein: The indoor housing (1) is fixed with a water collecting tray (60) on the inner bottom, the first evaporator (2) and the second evaporator (7) are located above the water collecting tray (60), and the bottom of the water collecting tray (60) is fixed with a drainage pump (601), and the drainage outlet of the drainage pump (601) is connected with a drainage pipe.