House ventilation equipment
The paraffin core-driven wax motor automatically adjusts the ventilation ducts, solving the problems of inconvenient installation and temperature adaptability of ventilation equipment in cold regions, and achieving temperature-adaptive ventilation without electric control.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENGZHOU XINGKAI ELECTRIC APPLIANCE CO LTD
- Filing Date
- 2025-04-24
- Publication Date
- 2026-05-12
AI Technical Summary
When building houses in cold regions, it is inconvenient to install ventilation equipment and it is necessary to prevent the effects of cold weather. Existing technologies make it difficult to achieve automated temperature-adaptive ventilation.
The wax motor, which uses a paraffin core as its core, takes advantage of the low coefficient of thermal expansion of paraffin wax. By expanding and contracting the paraffin core inside the wax motor, it automatically adjusts the opening and closing of the ventilation duct, achieving temperature-adaptive ventilation.
It keeps the room warm in cold weather and automatically ventilates when the temperature rises, achieving temperature-adaptive ventilation without the need for electric control.
Smart Images
Figure CN224230223U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of building ventilation equipment, specifically a building ventilation equipment. Background Technology
[0002] Ventilation ducts are hollow pipes used for ventilation, mostly round or square. The plates, profiles, and other main finished materials used in the fabrication and installation of ventilation ducts should comply with the design and relevant current national standards, and should be accompanied by a certificate of conformity from the manufacturer. Materials should be inspected upon arrival at the site according to current national standards. With economic development and rapid urbanization, people are living and working in close proximity. To ensure better air circulation and guarantee the quality of air for people, ventilation ducts are widely used in various places of life and work, and the functional requirements for ventilation ducts are becoming increasingly stringent.
[0003] In some cold regions, the walls of houses are quite thick, making it inconvenient to build and install ventilation equipment. Not only is it necessary to drill the corresponding pipe locations during the initial construction of the house, but also to plan and arrange the wiring connections, and at the same time, to prevent the cold weather from affecting the equipment, which is quite inconvenient.
[0004] This case arose in order to resolve the aforementioned issues. Utility Model Content
[0005] In view of the shortcomings of the prior art, this utility model provides a house ventilation and air exchange device, which solves the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a house ventilation and air exchange device, comprising a ventilation duct, a sleeve fitted at one end of the ventilation duct, a second limiting post fixedly connected to the sleeve, a wax motor fixedly installed inside the second limiting post, an opening at the bottom of the second limiting post, one end of the wax motor extending out of the opening of the second limiting post, an internal thread at the opening at the upper end of the second limiting post, the upper end of the second limiting post integrally fitted with a connecting post, and a top cover fixedly connected to the top of the connecting post.
[0007] Preferably, the bottom surface of the top cover is a downward-convex cone shape, the bottom surface of the top cover is entirely covered with foam cotton material, and the bottom surface of the sleeve has multiple holes circumferentially opened.
[0008] Preferably, a limiting post is fixedly connected inside the hole, and multiple limiting posts are arranged in an alternating manner. A non-woven filter bag is fixedly sleeved on the limiting post.
[0009] Preferably, the wax motor is provided with a push rod, the top of which protrudes from the wax motor and is located in the middle of the connecting column.
[0010] Preferably, a paraffin core is provided below the top rod, and the paraffin core is shaped with a smaller top and a larger bottom.
[0011] After adopting the above technical solution, this utility model has the following advantages compared with the prior art: This utility model is a house ventilation and air exchange device, which uses a wax motor with paraffin core as the main material as the core of the device. Since the thermal expansion coefficient of paraffin is small, when the weather is cold, the top cover is tightly covered on the sleeve to form a seal, so that no air flows into the room, thus ensuring the warmth of the room. When the temperature is high, the paraffin expands due to heat, and the top rod lifts up the entire top cover. At this time, a gap is formed between the top cover and the sleeve, so that the indoor and outdoor air exchange and ventilation can begin. The whole process does not require electricity and is automatic according to the temperature change. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the present invention;
[0013] Figure 2 This is a schematic diagram of the present invention without ventilation ducts;
[0014] Figure 3 This is a schematic diagram of the wax motor of this utility model;
[0015] Figure 4 This is a cross-sectional schematic diagram of the wax motor of this utility model.
[0016] In the diagram: 1. Ventilation duct; 2. Top cover; 3. Connecting column; 4. Sleeve; 5. Wax motor; 6. Limiting column; 7. Top rod; 8. Paraffin core; 9. Second limiting column. Detailed Implementation
[0017] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0018] like Figure 1-4 As shown: A house ventilation and air exchange device includes a ventilation duct 1, with a sleeve 4 sleeved at one end of the ventilation duct 1. A second limiting post 9 is fixedly connected to the sleeve 4, and a wax motor 5 is fixedly installed inside the second limiting post 9. The bottom of the second limiting post 9 has an opening, and one end of the wax motor 5 extends out of the opening of the second limiting post 9. The upper opening of the second limiting post 9 has an internal thread. The upper end of the second limiting post 9 is integrally sleeved with a connecting post 3. A top cover 2 is fixedly connected to the top of the connecting post 3. The ventilation duct 1 is inserted into a pre-reserved ventilation opening in the wall, with one end facing outward and the end with the top cover 2 facing inward. The connecting post 3 is sleeved on the limiting post 9, so that the inner wall of the top cover 2 is engaged with the sleeve 4. At this time, the outside wind cannot blow into the room, thus achieving heat preservation. When the outside temperature is high, the paraffin core 8 expands due to heat and pushes upward. At the same time, the top rod 7 pushes upward, pushing the connecting post 3 upward. At this time, a gap appears between the top cover 2 and the sleeve 4, allowing ventilation between the inside and outside.
[0019] The bottom surface of the top cover 2 is a downward-convex cone shape, and the entire bottom surface of the top cover 2 is covered with foam cotton material. The bottom surface of the sleeve 4 has multiple holes circumferentially opened, and a limit post 6 is fixedly connected in every two holes. The multiple limit posts 6 are arranged in an alternating manner, and a non-woven filter bag is fixedly fitted on the limit post 6 to achieve the function of filtering air. When the outside air flows through the non-woven filter bag along the ventilation duct 1 and rushes into the sleeve 4, the non-woven filter bag can purify the air. The non-woven filter bag itself has a small diameter, which can effectively prevent large dust particles from entering, and the design of fitting it on the limit post 6 makes it easy to replace.
[0020] The wax motor 5 is equipped with a push rod 7, the top of which protrudes from the wax motor 5. The push rod 7 is located in the middle of the connecting column 3. Below the push rod 7 is a paraffin core 8, which is shaped like a cone with a smaller top and a larger bottom. The wax motor 5 has a frustum-shaped slot from bottom to top. The push rod 7 is located at the top of the slot and its end protrudes from the wax motor 5. The paraffin core 8 is located below the push rod 7 in the slot. When the paraffin core 8 is heated and expands, it moves upward along the slot, thereby lifting the push rod 7 upward. In turn, the push rod 7 lifts the connecting column 3 upward, thus achieving ventilation.
[0021] The above-described embodiments are provided for illustrative purposes. Based on the above description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this utility model is not limited to the contents of the specification; its protection scope must be determined according to the claims.
Claims
1. A building ventilation and air exchange device, comprising a ventilation duct (1), characterized in that: The ventilation duct (1) has a sleeve (4) fitted at one end. The sleeve (4) is fixedly connected to a second limiting post (9). A wax motor (5) is fixedly installed inside the second limiting post (9). The bottom of the second limiting post (9) has an opening. One end of the wax motor (5) extends out of the opening of the second limiting post (9). The upper opening of the second limiting post (9) has an internal thread. The upper end of the second limiting post (9) is integrally fitted with the connecting post (3). The top of the connecting post (3) is fixedly connected to a top cover (2).
2. The building ventilation and air exchange equipment according to claim 1, characterized in that: The bottom surface of the top cover (2) is a cone shape that tapers downwards. The bottom surface of the top cover (2) is entirely covered with foam cotton material. The bottom surface of the sleeve (4) has multiple holes circumferentially opened.
3. A building ventilation and air exchange device according to claim 2, characterized in that: A limiting post (6) is fixedly connected to each pair of holes, and multiple limiting posts (6) are arranged in an alternating manner. A non-woven filter bag is fixedly sleeved on each limiting post (6).
4. A building ventilation and air exchange device according to claim 1, characterized in that: The wax motor (5) is provided with a top rod (7), the top of the top rod (7) protrudes from the wax motor (5), and the top rod (7) is located in the middle of the connecting column (3).
5. A building ventilation and air exchange device according to claim 4, characterized in that: The top rod (7) is provided with a paraffin core (8) below it, and the paraffin core (8) is shaped with a smaller top and a larger bottom.